Initial import from the monolithic Qt.

This is the beginning of revision history for this module. If you
want to look at revision history older than this, please refer to the
Qt Git wiki for how to use Git history grafting. At the time of
writing, this wiki is located here:

http://qt.gitorious.org/qt/pages/GitIntroductionWithQt

If you have already performed the grafting and you don't see any
history beyond this commit, try running "git log" with the "--follow"
argument.

Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

114 files changed, 63044 insertions, 0 deletions

diff --git a/src/opengl/gl2paintengineex/qgl2pexvertexarray.cpp b/src/opengl/gl2paintengineex/qgl2pexvertexarray.cpp
new file mode 100644
index 0000000000..4677cc47b4
--- /dev/null
+++ b/src/opengl/gl2paintengineex/qgl2pexvertexarray.cpp
@@ -0,0 +1,175 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qgl2pexvertexarray_p.h"
+
+#include <private/qbezier_p.h>
+
+QT_BEGIN_NAMESPACE
+
+void QGL2PEXVertexArray::clear()
+{
+    vertexArray.reset();
+    vertexArrayStops.reset();
+    boundingRectDirty = true;
+}
+
+
+QGLRect QGL2PEXVertexArray::boundingRect() const
+{
+    if (boundingRectDirty)
+        return QGLRect(0.0, 0.0, 0.0, 0.0);
+    else
+        return QGLRect(minX, minY, maxX, maxY);
+}
+
+void QGL2PEXVertexArray::addClosingLine(int index)
+{
+    QPointF point(vertexArray.at(index));
+    if (point != QPointF(vertexArray.last()))
+        vertexArray.add(point);
+}
+
+void QGL2PEXVertexArray::addCentroid(const QVectorPath &path, int subPathIndex)
+{
+    const QPointF *const points = reinterpret_cast<const QPointF *>(path.points());
+    const QPainterPath::ElementType *const elements = path.elements();
+
+    QPointF sum = points[subPathIndex];
+    int count = 1;
+
+    for (int i = subPathIndex + 1; i < path.elementCount() && (!elements || elements[i] != QPainterPath::MoveToElement); ++i) {
+        sum += points[i];
+        ++count;
+    }
+
+    const QPointF centroid = sum / qreal(count);
+    vertexArray.add(centroid);
+}
+
+void QGL2PEXVertexArray::addPath(const QVectorPath &path, GLfloat curveInverseScale, bool outline)
+{
+    const QPointF* const points = reinterpret_cast<const QPointF*>(path.points());
+    const QPainterPath::ElementType* const elements = path.elements();
+
+    if (boundingRectDirty) {
+        minX = maxX = points[0].x();
+        minY = maxY = points[0].y();
+        boundingRectDirty = false;
+    }
+
+    if (!outline && !path.isConvex())
+        addCentroid(path, 0);
+
+    int lastMoveTo = vertexArray.size();
+    vertexArray.add(points[0]); // The first element is always a moveTo
+
+    do {
+        if (!elements) {
+//             qDebug("QVectorPath has no elements");
+            // If the path has a null elements pointer, the elements implicitly
+            // start with a moveTo (already added) and continue with lineTos:
+            for (int i=1; i<path.elementCount(); ++i)
+                lineToArray(points[i].x(), points[i].y());
+
+            break;
+        }
+//         qDebug("QVectorPath has element types");
+
+        for (int i=1; i<path.elementCount(); ++i) {
+            switch (elements[i]) {
+            case QPainterPath::MoveToElement:
+                if (!outline)
+                    addClosingLine(lastMoveTo);
+//                qDebug("element[%d] is a MoveToElement", i);
+                vertexArrayStops.add(vertexArray.size());
+                if (!outline) {
+                    if (!path.isConvex()) addCentroid(path, i);
+                    lastMoveTo = vertexArray.size();
+                }
+                lineToArray(points[i].x(), points[i].y()); // Add the moveTo as a new vertex
+                break;
+            case QPainterPath::LineToElement:
+//                qDebug("element[%d] is a LineToElement", i);
+                lineToArray(points[i].x(), points[i].y());
+                break;
+            case QPainterPath::CurveToElement: {
+                QBezier b = QBezier::fromPoints(*(((const QPointF *) points) + i - 1),
+                                                points[i],
+                                                points[i+1],
+                                                points[i+2]);
+                QRectF bounds = b.bounds();
+                // threshold based on same algorithm as in qtriangulatingstroker.cpp
+                int threshold = qMin<float>(64, qMax(bounds.width(), bounds.height()) * 3.14f / (curveInverseScale * 6));
+                if (threshold < 3) threshold = 3;
+                qreal one_over_threshold_minus_1 = qreal(1) / (threshold - 1);
+                for (int t=0; t<threshold; ++t) {
+                    QPointF pt = b.pointAt(t * one_over_threshold_minus_1);
+                    lineToArray(pt.x(), pt.y());
+                }
+                i += 2;
+                break; }
+            default:
+                break;
+            }
+        }
+    } while (0);
+
+    if (!outline)
+        addClosingLine(lastMoveTo);
+    vertexArrayStops.add(vertexArray.size());
+}
+
+void QGL2PEXVertexArray::lineToArray(const GLfloat x, const GLfloat y)
+{
+    vertexArray.add(QGLPoint(x, y));
+
+    if (x > maxX)
+        maxX = x;
+    else if (x < minX)
+        minX = x;
+    if (y > maxY)
+        maxY = y;
+    else if (y < minY)
+        minY = y;
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/gl2paintengineex/qgl2pexvertexarray_p.h b/src/opengl/gl2paintengineex/qgl2pexvertexarray_p.h
new file mode 100644
index 0000000000..99cd8d84b0
--- /dev/null
+++ b/src/opengl/gl2paintengineex/qgl2pexvertexarray_p.h
@@ -0,0 +1,169 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#ifndef QGL2PEXVERTEXARRAY_P_H
+#define QGL2PEXVERTEXARRAY_P_H
+
+#include <QRectF>
+
+#include <private/qdatabuffer_p.h>
+#include <private/qvectorpath_p.h>
+#include <private/qgl_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QGLPoint
+{
+public:
+    QGLPoint(GLfloat new_x, GLfloat new_y) :
+        x(new_x), y(new_y) {};
+
+    QGLPoint(const QPointF &p) :
+        x(p.x()), y(p.y()) {};
+
+    QGLPoint(const QPointF* p) :
+        x(p->x()), y(p->y()) {};
+
+    GLfloat x;
+    GLfloat y;
+
+    operator QPointF() {return QPointF(x,y);}
+    operator QPointF() const {return QPointF(x,y);}
+};
+
+struct QGLRect
+{
+    QGLRect(const QRectF &r)
+        :  left(r.left()), top(r.top()), right(r.right()), bottom(r.bottom()) {}
+
+    QGLRect(GLfloat l, GLfloat t, GLfloat r, GLfloat b)
+        : left(l), top(t), right(r), bottom(b) {}
+
+    GLfloat left;
+    GLfloat top;
+    GLfloat right;
+    GLfloat bottom;
+
+    operator QRectF() const {return QRectF(left, top, right-left, bottom-top);}
+};
+
+class QGL2PEXVertexArray
+{
+public:
+    QGL2PEXVertexArray() :
+        vertexArray(0), vertexArrayStops(0),
+        maxX(-2e10), maxY(-2e10), minX(2e10), minY(2e10),
+        boundingRectDirty(true)
+    { }
+    
+    inline void addRect(const QRectF &rect)
+    {
+        qreal top = rect.top();
+        qreal left = rect.left();
+        qreal bottom = rect.bottom();
+        qreal right = rect.right();
+    
+        vertexArray << QGLPoint(left, top)
+                    << QGLPoint(right, top)
+                    << QGLPoint(right, bottom)
+                    << QGLPoint(right, bottom)
+                    << QGLPoint(left, bottom)
+                    << QGLPoint(left, top);        
+    }
+
+    inline void addQuad(const QRectF &rect)
+    {
+        qreal top = rect.top();
+        qreal left = rect.left();
+        qreal bottom = rect.bottom();
+        qreal right = rect.right();
+
+        vertexArray << QGLPoint(left, top)
+                    << QGLPoint(right, top)
+                    << QGLPoint(left, bottom)
+                    << QGLPoint(right, bottom);
+
+    }
+
+    inline void addVertex(const GLfloat x, const GLfloat y)
+    {
+        vertexArray.add(QGLPoint(x, y));
+    }
+
+    void addPath(const QVectorPath &path, GLfloat curveInverseScale, bool outline = true);
+    void clear();
+
+    QGLPoint*        data() {return vertexArray.data();}
+    int *stops() const { return vertexArrayStops.data(); }
+    int stopCount() const { return vertexArrayStops.size(); }
+    QGLRect         boundingRect() const;
+
+    int vertexCount() const { return vertexArray.size(); }
+
+    void lineToArray(const GLfloat x, const GLfloat y);
+
+private:
+    QDataBuffer<QGLPoint> vertexArray;
+    QDataBuffer<int>      vertexArrayStops;
+
+    GLfloat     maxX;
+    GLfloat     maxY;
+    GLfloat     minX;
+    GLfloat     minY;
+    bool        boundingRectDirty;
+    void addClosingLine(int index);
+    void addCentroid(const QVectorPath &path, int subPathIndex);
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/opengl/gl2paintengineex/qglcustomshaderstage.cpp b/src/opengl/gl2paintengineex/qglcustomshaderstage.cpp
new file mode 100644
index 0000000000..85f1ff257b
--- /dev/null
+++ b/src/opengl/gl2paintengineex/qglcustomshaderstage.cpp
@@ -0,0 +1,138 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qglcustomshaderstage_p.h"
+#include "qglengineshadermanager_p.h"
+#include "qpaintengineex_opengl2_p.h"
+#include <private/qpainter_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QGLCustomShaderStagePrivate
+{
+public:
+    QGLCustomShaderStagePrivate() :
+        m_manager(0) {}
+
+    QPointer<QGLEngineShaderManager> m_manager;
+    QByteArray              m_source;
+};
+
+
+
+
+QGLCustomShaderStage::QGLCustomShaderStage()
+    : d_ptr(new QGLCustomShaderStagePrivate)
+{
+}
+
+QGLCustomShaderStage::~QGLCustomShaderStage()
+{
+    Q_D(QGLCustomShaderStage);
+    if (d->m_manager) {
+        d->m_manager->removeCustomStage();
+        d->m_manager->sharedShaders->cleanupCustomStage(this);
+    }
+}
+
+void QGLCustomShaderStage::setUniformsDirty()
+{
+    Q_D(QGLCustomShaderStage);
+    if (d->m_manager)
+        d->m_manager->setDirty(); // ### Probably a bit overkill!
+}
+
+bool QGLCustomShaderStage::setOnPainter(QPainter* p)
+{
+    Q_D(QGLCustomShaderStage);
+    if (p->paintEngine()->type() != QPaintEngine::OpenGL2) {
+        qWarning("QGLCustomShaderStage::setOnPainter() - paint engine not OpenGL2");
+        return false;
+    }
+    if (d->m_manager)
+        qWarning("Custom shader is already set on a painter");
+
+    QGL2PaintEngineEx *engine = static_cast<QGL2PaintEngineEx*>(p->paintEngine());
+    d->m_manager = QGL2PaintEngineExPrivate::shaderManagerForEngine(engine);
+    Q_ASSERT(d->m_manager);
+
+    d->m_manager->setCustomStage(this);
+    return true;
+}
+
+void QGLCustomShaderStage::removeFromPainter(QPainter* p)
+{
+    Q_D(QGLCustomShaderStage);
+    if (p->paintEngine()->type() != QPaintEngine::OpenGL2)
+        return;
+
+    QGL2PaintEngineEx *engine = static_cast<QGL2PaintEngineEx*>(p->paintEngine());
+    d->m_manager = QGL2PaintEngineExPrivate::shaderManagerForEngine(engine);
+    Q_ASSERT(d->m_manager);
+
+    // Just set the stage to null, don't call removeCustomStage().
+    // This should leave the program in a compiled/linked state
+    // if the next custom shader stage is this one again.
+    d->m_manager->setCustomStage(0);
+    d->m_manager = 0;
+}
+
+QByteArray QGLCustomShaderStage::source() const
+{
+    Q_D(const QGLCustomShaderStage);
+    return d->m_source;
+}
+
+// Called by the shader manager if another custom shader is attached or
+// the manager is deleted
+void QGLCustomShaderStage::setInactive()
+{
+    Q_D(QGLCustomShaderStage);
+    d->m_manager = 0;
+}
+
+void QGLCustomShaderStage::setSource(const QByteArray& s)
+{
+    Q_D(QGLCustomShaderStage);
+    d->m_source = s;
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/gl2paintengineex/qglcustomshaderstage_p.h b/src/opengl/gl2paintengineex/qglcustomshaderstage_p.h
new file mode 100644
index 0000000000..2a7fc5dd09
--- /dev/null
+++ b/src/opengl/gl2paintengineex/qglcustomshaderstage_p.h
@@ -0,0 +1,93 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QGL_CUSTOM_SHADER_STAGE_H
+#define QGL_CUSTOM_SHADER_STAGE_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QGLShaderProgram>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(OpenGL)
+
+class QGLCustomShaderStagePrivate;
+class Q_OPENGL_EXPORT QGLCustomShaderStage
+{
+    Q_DECLARE_PRIVATE(QGLCustomShaderStage)
+public:
+    QGLCustomShaderStage();
+    virtual ~QGLCustomShaderStage();
+    virtual void setUniforms(QGLShaderProgram*) {}
+
+    void setUniformsDirty();
+
+    bool setOnPainter(QPainter*);
+    void removeFromPainter(QPainter*);
+    QByteArray source() const;
+
+    void setInactive();
+protected:
+    void setSource(const QByteArray&);
+
+private:
+    QGLCustomShaderStagePrivate* d_ptr;
+};
+
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+
+#endif
diff --git a/src/opengl/gl2paintengineex/qglengineshadermanager.cpp b/src/opengl/gl2paintengineex/qglengineshadermanager.cpp
new file mode 100644
index 0000000000..8068aa8524
--- /dev/null
+++ b/src/opengl/gl2paintengineex/qglengineshadermanager.cpp
@@ -0,0 +1,838 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qglengineshadermanager_p.h"
+#include "qglengineshadersource_p.h"
+#include "qpaintengineex_opengl2_p.h"
+#include "qglshadercache_p.h"
+
+#if defined(QT_DEBUG)
+#include <QMetaEnum>
+#endif
+
+// #define QT_GL_SHARED_SHADER_DEBUG
+
+QT_BEGIN_NAMESPACE
+
+class QGLShaderStorage
+{
+public:
+    QGLEngineSharedShaders *shadersForThread(const QGLContext *context) {
+        QGLContextGroupResource<QGLEngineSharedShaders> *&shaders = m_storage.localData();
+        if (!shaders)
+            shaders = new QGLContextGroupResource<QGLEngineSharedShaders>();
+        return shaders->value(context);
+    }
+
+private:
+    QThreadStorage<QGLContextGroupResource<QGLEngineSharedShaders> *> m_storage;
+};
+
+Q_GLOBAL_STATIC(QGLShaderStorage, qt_shader_storage);
+
+QGLEngineSharedShaders *QGLEngineSharedShaders::shadersForContext(const QGLContext *context)
+{
+    return qt_shader_storage()->shadersForThread(context);
+}
+
+const char* QGLEngineSharedShaders::qShaderSnippets[] = {
+    0,0,0,0,0,0,0,0,0,0,
+    0,0,0,0,0,0,0,0,0,0,
+    0,0,0,0,0,0,0,0,0,0,
+    0,0,0,0,0
+};
+
+QGLEngineSharedShaders::QGLEngineSharedShaders(const QGLContext* context)
+    : ctxGuard(context)
+    , blitShaderProg(0)
+    , simpleShaderProg(0)
+{
+
+/*
+    Rather than having the shader source array statically initialised, it is initialised
+    here instead. This is to allow new shader names to be inserted or existing names moved
+    around without having to change the order of the glsl strings. It is hoped this will
+    make future hard-to-find runtime bugs more obvious and generally give more solid code.
+*/
+    static bool snippetsPopulated = false;
+    if (!snippetsPopulated) {
+
+        const char** code = qShaderSnippets; // shortcut
+
+        code[MainVertexShader] = qglslMainVertexShader;
+        code[MainWithTexCoordsVertexShader] = qglslMainWithTexCoordsVertexShader;
+        code[MainWithTexCoordsAndOpacityVertexShader] = qglslMainWithTexCoordsAndOpacityVertexShader;
+
+        code[UntransformedPositionVertexShader] = qglslUntransformedPositionVertexShader;
+        code[PositionOnlyVertexShader] = qglslPositionOnlyVertexShader;
+        code[ComplexGeometryPositionOnlyVertexShader] = qglslComplexGeometryPositionOnlyVertexShader;
+        code[PositionWithPatternBrushVertexShader] = qglslPositionWithPatternBrushVertexShader;
+        code[PositionWithLinearGradientBrushVertexShader] = qglslPositionWithLinearGradientBrushVertexShader;
+        code[PositionWithConicalGradientBrushVertexShader] = qglslPositionWithConicalGradientBrushVertexShader;
+        code[PositionWithRadialGradientBrushVertexShader] = qglslPositionWithRadialGradientBrushVertexShader;
+        code[PositionWithTextureBrushVertexShader] = qglslPositionWithTextureBrushVertexShader;
+        code[AffinePositionWithPatternBrushVertexShader] = qglslAffinePositionWithPatternBrushVertexShader;
+        code[AffinePositionWithLinearGradientBrushVertexShader] = qglslAffinePositionWithLinearGradientBrushVertexShader;
+        code[AffinePositionWithConicalGradientBrushVertexShader] = qglslAffinePositionWithConicalGradientBrushVertexShader;
+        code[AffinePositionWithRadialGradientBrushVertexShader] = qglslAffinePositionWithRadialGradientBrushVertexShader;
+        code[AffinePositionWithTextureBrushVertexShader] = qglslAffinePositionWithTextureBrushVertexShader;
+
+        code[MainFragmentShader_CMO] = qglslMainFragmentShader_CMO;
+        code[MainFragmentShader_CM] = qglslMainFragmentShader_CM;
+        code[MainFragmentShader_MO] = qglslMainFragmentShader_MO;
+        code[MainFragmentShader_M] = qglslMainFragmentShader_M;
+        code[MainFragmentShader_CO] = qglslMainFragmentShader_CO;
+        code[MainFragmentShader_C] = qglslMainFragmentShader_C;
+        code[MainFragmentShader_O] = qglslMainFragmentShader_O;
+        code[MainFragmentShader] = qglslMainFragmentShader;
+        code[MainFragmentShader_ImageArrays] = qglslMainFragmentShader_ImageArrays;
+
+        code[ImageSrcFragmentShader] = qglslImageSrcFragmentShader;
+        code[ImageSrcWithPatternFragmentShader] = qglslImageSrcWithPatternFragmentShader;
+        code[NonPremultipliedImageSrcFragmentShader] = qglslNonPremultipliedImageSrcFragmentShader;
+        code[CustomImageSrcFragmentShader] = qglslCustomSrcFragmentShader; // Calls "customShader", which must be appended
+        code[SolidBrushSrcFragmentShader] = qglslSolidBrushSrcFragmentShader;
+        code[TextureBrushSrcFragmentShader] = qglslTextureBrushSrcFragmentShader;
+        code[TextureBrushSrcWithPatternFragmentShader] = qglslTextureBrushSrcWithPatternFragmentShader;
+        code[PatternBrushSrcFragmentShader] = qglslPatternBrushSrcFragmentShader;
+        code[LinearGradientBrushSrcFragmentShader] = qglslLinearGradientBrushSrcFragmentShader;
+        code[RadialGradientBrushSrcFragmentShader] = qglslRadialGradientBrushSrcFragmentShader;
+        code[ConicalGradientBrushSrcFragmentShader] = qglslConicalGradientBrushSrcFragmentShader;
+        code[ShockingPinkSrcFragmentShader] = qglslShockingPinkSrcFragmentShader;
+
+        code[NoMaskFragmentShader] = "";
+        code[MaskFragmentShader] = qglslMaskFragmentShader;
+        code[RgbMaskFragmentShaderPass1] = qglslRgbMaskFragmentShaderPass1;
+        code[RgbMaskFragmentShaderPass2] = qglslRgbMaskFragmentShaderPass2;
+        code[RgbMaskWithGammaFragmentShader] = ""; //###
+
+        code[NoCompositionModeFragmentShader] = "";
+        code[MultiplyCompositionModeFragmentShader] = ""; //###
+        code[ScreenCompositionModeFragmentShader] = ""; //###
+        code[OverlayCompositionModeFragmentShader] = ""; //###
+        code[DarkenCompositionModeFragmentShader] = ""; //###
+        code[LightenCompositionModeFragmentShader] = ""; //###
+        code[ColorDodgeCompositionModeFragmentShader] = ""; //###
+        code[ColorBurnCompositionModeFragmentShader] = ""; //###
+        code[HardLightCompositionModeFragmentShader] = ""; //###
+        code[SoftLightCompositionModeFragmentShader] = ""; //###
+        code[DifferenceCompositionModeFragmentShader] = ""; //###
+        code[ExclusionCompositionModeFragmentShader] = ""; //###
+
+#if defined(QT_DEBUG)
+        // Check that all the elements have been filled:
+        for (int i = 0; i < TotalSnippetCount; ++i) {
+            if (qShaderSnippets[i] == 0) {
+                qFatal("Shader snippet for %s (#%d) is missing!",
+                       snippetNameStr(SnippetName(i)).constData(), i);
+            }
+        }
+#endif
+        snippetsPopulated = true;
+    }
+
+    QGLShader* fragShader;
+    QGLShader* vertexShader;
+    QByteArray vertexSource;
+    QByteArray fragSource;
+
+    // Compile up the simple shader:
+    vertexSource.append(qShaderSnippets[MainVertexShader]);
+    vertexSource.append(qShaderSnippets[PositionOnlyVertexShader]);
+
+    fragSource.append(qShaderSnippets[MainFragmentShader]);
+    fragSource.append(qShaderSnippets[ShockingPinkSrcFragmentShader]);
+
+    simpleShaderProg = new QGLShaderProgram(context, 0);
+
+    CachedShader simpleShaderCache(fragSource, vertexSource);
+
+    bool inCache = simpleShaderCache.load(simpleShaderProg, context);
+
+    if (!inCache) {
+        vertexShader = new QGLShader(QGLShader::Vertex, context, 0);
+        shaders.append(vertexShader);
+        if (!vertexShader->compileSourceCode(vertexSource))
+            qWarning("Vertex shader for simpleShaderProg (MainVertexShader & PositionOnlyVertexShader) failed to compile");
+
+        fragShader = new QGLShader(QGLShader::Fragment, context, 0);
+        shaders.append(fragShader);
+        if (!fragShader->compileSourceCode(fragSource))
+            qWarning("Fragment shader for simpleShaderProg (MainFragmentShader & ShockingPinkSrcFragmentShader) failed to compile");
+
+        simpleShaderProg->addShader(vertexShader);
+        simpleShaderProg->addShader(fragShader);
+
+        simpleShaderProg->bindAttributeLocation("vertexCoordsArray", QT_VERTEX_COORDS_ATTR);
+        simpleShaderProg->bindAttributeLocation("pmvMatrix1", QT_PMV_MATRIX_1_ATTR);
+        simpleShaderProg->bindAttributeLocation("pmvMatrix2", QT_PMV_MATRIX_2_ATTR);
+        simpleShaderProg->bindAttributeLocation("pmvMatrix3", QT_PMV_MATRIX_3_ATTR);
+    }
+
+    simpleShaderProg->link();
+
+    if (simpleShaderProg->isLinked()) {
+        if (!inCache)
+            simpleShaderCache.store(simpleShaderProg, context);
+    } else {
+        qCritical() << "Errors linking simple shader:"
+                    << simpleShaderProg->log();
+    }
+
+    // Compile the blit shader:
+    vertexSource.clear();
+    vertexSource.append(qShaderSnippets[MainWithTexCoordsVertexShader]);
+    vertexSource.append(qShaderSnippets[UntransformedPositionVertexShader]);
+
+    fragSource.clear();
+    fragSource.append(qShaderSnippets[MainFragmentShader]);
+    fragSource.append(qShaderSnippets[ImageSrcFragmentShader]);
+
+    blitShaderProg = new QGLShaderProgram(context, 0);
+
+    CachedShader blitShaderCache(fragSource, vertexSource);
+
+    inCache = blitShaderCache.load(blitShaderProg, context);
+
+    if (!inCache) {
+        vertexShader = new QGLShader(QGLShader::Vertex, context, 0);
+        shaders.append(vertexShader);
+        if (!vertexShader->compileSourceCode(vertexSource))
+            qWarning("Vertex shader for blitShaderProg (MainWithTexCoordsVertexShader & UntransformedPositionVertexShader) failed to compile");
+
+        fragShader = new QGLShader(QGLShader::Fragment, context, 0);
+        shaders.append(fragShader);
+        if (!fragShader->compileSourceCode(fragSource))
+            qWarning("Fragment shader for blitShaderProg (MainFragmentShader & ImageSrcFragmentShader) failed to compile");
+
+        blitShaderProg->addShader(vertexShader);
+        blitShaderProg->addShader(fragShader);
+
+        blitShaderProg->bindAttributeLocation("textureCoordArray", QT_TEXTURE_COORDS_ATTR);
+        blitShaderProg->bindAttributeLocation("vertexCoordsArray", QT_VERTEX_COORDS_ATTR);
+    }
+
+    blitShaderProg->link();
+    if (blitShaderProg->isLinked()) {
+        if (!inCache)
+            blitShaderCache.store(blitShaderProg, context);
+    } else {
+        qCritical() << "Errors linking blit shader:"
+                    << blitShaderProg->log();
+    }
+
+#ifdef QT_GL_SHARED_SHADER_DEBUG
+    qDebug(" -> QGLEngineSharedShaders() %p for thread %p.", this, QThread::currentThread());
+#endif
+}
+
+QGLEngineSharedShaders::~QGLEngineSharedShaders()
+{
+#ifdef QT_GL_SHARED_SHADER_DEBUG
+    qDebug(" -> ~QGLEngineSharedShaders() %p for thread %p.", this, QThread::currentThread());
+#endif
+    qDeleteAll(shaders);
+    shaders.clear();
+
+    qDeleteAll(cachedPrograms);
+    cachedPrograms.clear();
+
+    if (blitShaderProg) {
+        delete blitShaderProg;
+        blitShaderProg = 0;
+    }
+
+    if (simpleShaderProg) {
+        delete simpleShaderProg;
+        simpleShaderProg = 0;
+    }
+}
+
+#if defined (QT_DEBUG)
+QByteArray QGLEngineSharedShaders::snippetNameStr(SnippetName name)
+{
+    QMetaEnum m = staticMetaObject.enumerator(staticMetaObject.indexOfEnumerator("SnippetName"));
+    return QByteArray(m.valueToKey(name));
+}
+#endif
+
+// The address returned here will only be valid until next time this function is called.
+// The program is return bound.
+QGLEngineShaderProg *QGLEngineSharedShaders::findProgramInCache(const QGLEngineShaderProg &prog)
+{
+    for (int i = 0; i < cachedPrograms.size(); ++i) {
+        QGLEngineShaderProg *cachedProg = cachedPrograms[i];
+        if (*cachedProg == prog) {
+            // Move the program to the top of the list as a poor-man's cache algo
+            cachedPrograms.move(i, 0);
+            cachedProg->program->bind();
+            return cachedProg;
+        }
+    }
+
+    QScopedPointer<QGLEngineShaderProg> newProg;
+
+    do {
+        QByteArray fragSource;
+        // Insert the custom stage before the srcPixel shader to work around an ATI driver bug
+        // where you cannot forward declare a function that takes a sampler as argument.
+        if (prog.srcPixelFragShader == CustomImageSrcFragmentShader)
+            fragSource.append(prog.customStageSource);
+        fragSource.append(qShaderSnippets[prog.mainFragShader]);
+        fragSource.append(qShaderSnippets[prog.srcPixelFragShader]);
+        if (prog.compositionFragShader)
+            fragSource.append(qShaderSnippets[prog.compositionFragShader]);
+        if (prog.maskFragShader)
+            fragSource.append(qShaderSnippets[prog.maskFragShader]);
+
+        QByteArray vertexSource;
+        vertexSource.append(qShaderSnippets[prog.mainVertexShader]);
+        vertexSource.append(qShaderSnippets[prog.positionVertexShader]);
+
+        QScopedPointer<QGLShaderProgram> shaderProgram(new QGLShaderProgram(ctxGuard.context(), 0));
+
+        CachedShader shaderCache(fragSource, vertexSource);
+        bool inCache = shaderCache.load(shaderProgram.data(), ctxGuard.context());
+
+        if (!inCache) {
+
+            QScopedPointer<QGLShader> fragShader(new QGLShader(QGLShader::Fragment, ctxGuard.context(), 0));
+            QByteArray description;
+#if defined(QT_DEBUG)
+            // Name the shader for easier debugging
+            description.append("Fragment shader: main=");
+            description.append(snippetNameStr(prog.mainFragShader));
+            description.append(", srcPixel=");
+            description.append(snippetNameStr(prog.srcPixelFragShader));
+            if (prog.compositionFragShader) {
+                description.append(", composition=");
+                description.append(snippetNameStr(prog.compositionFragShader));
+            }
+            if (prog.maskFragShader) {
+                description.append(", mask=");
+                description.append(snippetNameStr(prog.maskFragShader));
+            }
+            fragShader->setObjectName(QString::fromLatin1(description));
+#endif
+            if (!fragShader->compileSourceCode(fragSource)) {
+                qWarning() << "Warning:" << description << "failed to compile!";
+                break;
+            }
+
+            QScopedPointer<QGLShader> vertexShader(new QGLShader(QGLShader::Vertex, ctxGuard.context(), 0));
+#if defined(QT_DEBUG)
+            // Name the shader for easier debugging
+            description.clear();
+            description.append("Vertex shader: main=");
+            description.append(snippetNameStr(prog.mainVertexShader));
+            description.append(", position=");
+            description.append(snippetNameStr(prog.positionVertexShader));
+            vertexShader->setObjectName(QString::fromLatin1(description));
+#endif
+            if (!vertexShader->compileSourceCode(vertexSource)) {
+                qWarning() << "Warning:" << description << "failed to compile!";
+                break;
+            }
+
+            shaders.append(vertexShader.data());
+            shaders.append(fragShader.data());
+            shaderProgram->addShader(vertexShader.take());
+            shaderProgram->addShader(fragShader.take());
+
+            // We have to bind the vertex attribute names before the program is linked:
+            shaderProgram->bindAttributeLocation("vertexCoordsArray", QT_VERTEX_COORDS_ATTR);
+            if (prog.useTextureCoords)
+                shaderProgram->bindAttributeLocation("textureCoordArray", QT_TEXTURE_COORDS_ATTR);
+            if (prog.useOpacityAttribute)
+                shaderProgram->bindAttributeLocation("opacityArray", QT_OPACITY_ATTR);
+            if (prog.usePmvMatrixAttribute) {
+                shaderProgram->bindAttributeLocation("pmvMatrix1", QT_PMV_MATRIX_1_ATTR);
+                shaderProgram->bindAttributeLocation("pmvMatrix2", QT_PMV_MATRIX_2_ATTR);
+                shaderProgram->bindAttributeLocation("pmvMatrix3", QT_PMV_MATRIX_3_ATTR);
+            }
+        }
+
+        newProg.reset(new QGLEngineShaderProg(prog));
+        newProg->program = shaderProgram.take();
+
+        newProg->program->link();
+        if (newProg->program->isLinked()) {
+            if (!inCache)
+                shaderCache.store(newProg->program, ctxGuard.context());
+        } else {
+            QLatin1String none("none");
+            QLatin1String br("\n");
+            QString error;
+            error = QLatin1String("Shader program failed to link,");
+#if defined(QT_DEBUG)
+            error += QLatin1String("\n  Shaders Used:\n");
+            for (int i = 0; i < newProg->program->shaders().count(); ++i) {
+                QGLShader *shader = newProg->program->shaders().at(i);
+                error += QLatin1String("    ") + shader->objectName() + QLatin1String(": \n")
+                         + QLatin1String(shader->sourceCode()) + br;
+            }
+#endif
+            error += QLatin1String("  Error Log:\n")
+                     + QLatin1String("    ") + newProg->program->log();
+            qWarning() << error;
+            break;
+        }
+
+        newProg->program->bind();
+
+        if (newProg->maskFragShader != QGLEngineSharedShaders::NoMaskFragmentShader) {
+            GLuint location = newProg->program->uniformLocation("maskTexture");
+            newProg->program->setUniformValue(location, QT_MASK_TEXTURE_UNIT);
+        }
+
+        if (cachedPrograms.count() > 30) {
+            // The cache is full, so delete the last 5 programs in the list.
+            // These programs will be least used, as a program us bumped to
+            // the top of the list when it's used.
+            for (int i = 0; i < 5; ++i) {
+                delete cachedPrograms.last();
+                cachedPrograms.removeLast();
+            }
+        }
+
+        cachedPrograms.insert(0, newProg.data());
+    } while (false);
+
+    return newProg.take();
+}
+
+void QGLEngineSharedShaders::cleanupCustomStage(QGLCustomShaderStage* stage)
+{
+    // Remove any shader programs which has this as the custom shader src:
+    for (int i = 0; i < cachedPrograms.size(); ++i) {
+        QGLEngineShaderProg *cachedProg = cachedPrograms[i];
+        if (cachedProg->customStageSource == stage->source()) {
+            delete cachedProg;
+            cachedPrograms.removeAt(i);
+            i--;
+        }
+    }
+}
+
+
+QGLEngineShaderManager::QGLEngineShaderManager(QGLContext* context)
+    : ctx(context),
+      shaderProgNeedsChanging(true),
+      complexGeometry(false),
+      srcPixelType(Qt::NoBrush),
+      opacityMode(NoOpacity),
+      maskType(NoMask),
+      compositionMode(QPainter::CompositionMode_SourceOver),
+      customSrcStage(0),
+      currentShaderProg(0)
+{
+    sharedShaders = QGLEngineSharedShaders::shadersForContext(context);
+}
+
+QGLEngineShaderManager::~QGLEngineShaderManager()
+{
+    //###
+    removeCustomStage();
+}
+
+GLuint QGLEngineShaderManager::getUniformLocation(Uniform id)
+{
+    if (!currentShaderProg)
+        return 0;
+
+    QVector<uint> &uniformLocations = currentShaderProg->uniformLocations;
+    if (uniformLocations.isEmpty())
+        uniformLocations.fill(GLuint(-1), NumUniforms);
+
+    static const char *uniformNames[] = {
+        "imageTexture",
+        "patternColor",
+        "globalOpacity",
+        "depth",
+        "maskTexture",
+        "fragmentColor",
+        "linearData",
+        "angle",
+        "halfViewportSize",
+        "fmp",
+        "fmp2_m_radius2",
+        "inverse_2_fmp2_m_radius2",
+        "invertedTextureSize",
+        "brushTransform",
+        "brushTexture",
+        "matrix"
+    };
+
+    if (uniformLocations.at(id) == GLuint(-1))
+        uniformLocations[id] = currentShaderProg->program->uniformLocation(uniformNames[id]);
+
+    return uniformLocations.at(id);
+}
+
+
+void QGLEngineShaderManager::optimiseForBrushTransform(QTransform::TransformationType transformType)
+{
+    Q_UNUSED(transformType); // Currently ignored
+}
+
+void QGLEngineShaderManager::setDirty()
+{
+    shaderProgNeedsChanging = true;
+}
+
+void QGLEngineShaderManager::setSrcPixelType(Qt::BrushStyle style)
+{
+    Q_ASSERT(style != Qt::NoBrush);
+    if (srcPixelType == PixelSrcType(style))
+        return;
+
+    srcPixelType = style;
+    shaderProgNeedsChanging = true; //###
+}
+
+void QGLEngineShaderManager::setSrcPixelType(PixelSrcType type)
+{
+    if (srcPixelType == type)
+        return;
+
+    srcPixelType = type;
+    shaderProgNeedsChanging = true; //###
+}
+
+void QGLEngineShaderManager::setOpacityMode(OpacityMode mode)
+{
+    if (opacityMode == mode)
+        return;
+
+    opacityMode = mode;
+    shaderProgNeedsChanging = true; //###
+}
+
+void QGLEngineShaderManager::setMaskType(MaskType type)
+{
+    if (maskType == type)
+        return;
+
+    maskType = type;
+    shaderProgNeedsChanging = true; //###
+}
+
+void QGLEngineShaderManager::setCompositionMode(QPainter::CompositionMode mode)
+{
+    if (compositionMode == mode)
+        return;
+
+    compositionMode = mode;
+    shaderProgNeedsChanging = true; //###
+}
+
+void QGLEngineShaderManager::setCustomStage(QGLCustomShaderStage* stage)
+{
+    if (customSrcStage)
+        removeCustomStage();
+    customSrcStage = stage;
+    shaderProgNeedsChanging = true;
+}
+
+void QGLEngineShaderManager::removeCustomStage()
+{
+    if (customSrcStage)
+        customSrcStage->setInactive();
+    customSrcStage = 0;
+    shaderProgNeedsChanging = true;
+}
+
+QGLShaderProgram* QGLEngineShaderManager::currentProgram()
+{
+    if (currentShaderProg)
+        return currentShaderProg->program;
+    else
+        return sharedShaders->simpleProgram();
+}
+
+void QGLEngineShaderManager::useSimpleProgram()
+{
+    sharedShaders->simpleProgram()->bind();
+    QGLContextPrivate* ctx_d = ctx->d_func();
+    ctx_d->setVertexAttribArrayEnabled(QT_VERTEX_COORDS_ATTR, true);
+    ctx_d->setVertexAttribArrayEnabled(QT_TEXTURE_COORDS_ATTR, false);
+    ctx_d->setVertexAttribArrayEnabled(QT_OPACITY_ATTR, false);
+    shaderProgNeedsChanging = true;
+}
+
+void QGLEngineShaderManager::useBlitProgram()
+{
+    sharedShaders->blitProgram()->bind();
+    QGLContextPrivate* ctx_d = ctx->d_func();
+    ctx_d->setVertexAttribArrayEnabled(QT_VERTEX_COORDS_ATTR, true);
+    ctx_d->setVertexAttribArrayEnabled(QT_TEXTURE_COORDS_ATTR, true);
+    ctx_d->setVertexAttribArrayEnabled(QT_OPACITY_ATTR, false);
+    shaderProgNeedsChanging = true;
+}
+
+QGLShaderProgram* QGLEngineShaderManager::simpleProgram()
+{
+    return sharedShaders->simpleProgram();
+}
+
+QGLShaderProgram* QGLEngineShaderManager::blitProgram()
+{
+    return sharedShaders->blitProgram();
+}
+
+
+
+// Select & use the correct shader program using the current state.
+// Returns true if program needed changing.
+bool QGLEngineShaderManager::useCorrectShaderProg()
+{
+    if (!shaderProgNeedsChanging)
+        return false;
+
+    bool useCustomSrc = customSrcStage != 0;
+    if (useCustomSrc && srcPixelType != QGLEngineShaderManager::ImageSrc && srcPixelType != Qt::TexturePattern) {
+        useCustomSrc = false;
+        qWarning("QGLEngineShaderManager - Ignoring custom shader stage for non image src");
+    }
+
+    QGLEngineShaderProg requiredProgram;
+
+    bool texCoords = false;
+
+    // Choose vertex shader shader position function (which typically also sets
+    // varyings) and the source pixel (srcPixel) fragment shader function:
+    requiredProgram.positionVertexShader = QGLEngineSharedShaders::InvalidSnippetName;
+    requiredProgram.srcPixelFragShader = QGLEngineSharedShaders::InvalidSnippetName;
+    bool isAffine = brushTransform.isAffine();
+    if ( (srcPixelType >= Qt::Dense1Pattern) && (srcPixelType <= Qt::DiagCrossPattern) ) {
+        if (isAffine)
+            requiredProgram.positionVertexShader = QGLEngineSharedShaders::AffinePositionWithPatternBrushVertexShader;
+        else
+            requiredProgram.positionVertexShader = QGLEngineSharedShaders::PositionWithPatternBrushVertexShader;
+
+        requiredProgram.srcPixelFragShader = QGLEngineSharedShaders::PatternBrushSrcFragmentShader;
+    }
+    else switch (srcPixelType) {
+        default:
+        case Qt::NoBrush:
+            qFatal("QGLEngineShaderManager::useCorrectShaderProg() - Qt::NoBrush style is set");
+            break;
+        case QGLEngineShaderManager::ImageSrc:
+            requiredProgram.srcPixelFragShader = QGLEngineSharedShaders::ImageSrcFragmentShader;
+            requiredProgram.positionVertexShader = QGLEngineSharedShaders::PositionOnlyVertexShader;
+            texCoords = true;
+            break;
+        case QGLEngineShaderManager::NonPremultipliedImageSrc:
+            requiredProgram.srcPixelFragShader = QGLEngineSharedShaders::NonPremultipliedImageSrcFragmentShader;
+            requiredProgram.positionVertexShader = QGLEngineSharedShaders::PositionOnlyVertexShader;
+            texCoords = true;
+            break;
+        case QGLEngineShaderManager::PatternSrc:
+            requiredProgram.srcPixelFragShader = QGLEngineSharedShaders::ImageSrcWithPatternFragmentShader;
+            requiredProgram.positionVertexShader = QGLEngineSharedShaders::PositionOnlyVertexShader;
+            texCoords = true;
+            break;
+        case QGLEngineShaderManager::TextureSrcWithPattern:
+            requiredProgram.srcPixelFragShader = QGLEngineSharedShaders::TextureBrushSrcWithPatternFragmentShader;
+            requiredProgram.positionVertexShader = isAffine ? QGLEngineSharedShaders::AffinePositionWithTextureBrushVertexShader
+                                                : QGLEngineSharedShaders::PositionWithTextureBrushVertexShader;
+            break;
+        case Qt::SolidPattern:
+            requiredProgram.srcPixelFragShader = QGLEngineSharedShaders::SolidBrushSrcFragmentShader;
+            requiredProgram.positionVertexShader = QGLEngineSharedShaders::PositionOnlyVertexShader;
+            break;
+        case Qt::LinearGradientPattern:
+            requiredProgram.srcPixelFragShader = QGLEngineSharedShaders::LinearGradientBrushSrcFragmentShader;
+            requiredProgram.positionVertexShader = isAffine ? QGLEngineSharedShaders::AffinePositionWithLinearGradientBrushVertexShader
+                                                : QGLEngineSharedShaders::PositionWithLinearGradientBrushVertexShader;
+            break;
+        case Qt::ConicalGradientPattern:
+            requiredProgram.srcPixelFragShader = QGLEngineSharedShaders::ConicalGradientBrushSrcFragmentShader;
+            requiredProgram.positionVertexShader = isAffine ? QGLEngineSharedShaders::AffinePositionWithConicalGradientBrushVertexShader
+                                                : QGLEngineSharedShaders::PositionWithConicalGradientBrushVertexShader;
+            break;
+        case Qt::RadialGradientPattern:
+            requiredProgram.srcPixelFragShader = QGLEngineSharedShaders::RadialGradientBrushSrcFragmentShader;
+            requiredProgram.positionVertexShader = isAffine ? QGLEngineSharedShaders::AffinePositionWithRadialGradientBrushVertexShader
+                                                : QGLEngineSharedShaders::PositionWithRadialGradientBrushVertexShader;
+            break;
+        case Qt::TexturePattern:
+            requiredProgram.srcPixelFragShader = QGLEngineSharedShaders::TextureBrushSrcFragmentShader;
+            requiredProgram.positionVertexShader = isAffine ? QGLEngineSharedShaders::AffinePositionWithTextureBrushVertexShader
+                                                : QGLEngineSharedShaders::PositionWithTextureBrushVertexShader;
+            break;
+    };
+
+    if (useCustomSrc) {
+        requiredProgram.srcPixelFragShader = QGLEngineSharedShaders::CustomImageSrcFragmentShader;
+        requiredProgram.customStageSource = customSrcStage->source();
+    }
+
+    const bool hasCompose = compositionMode > QPainter::CompositionMode_Plus;
+    const bool hasMask = maskType != QGLEngineShaderManager::NoMask;
+
+    // Choose fragment shader main function:
+    if (opacityMode == AttributeOpacity) {
+        Q_ASSERT(!hasCompose && !hasMask);
+        requiredProgram.mainFragShader = QGLEngineSharedShaders::MainFragmentShader_ImageArrays;
+    } else {
+        bool useGlobalOpacity = (opacityMode == UniformOpacity);
+        if (hasCompose && hasMask && useGlobalOpacity)
+            requiredProgram.mainFragShader = QGLEngineSharedShaders::MainFragmentShader_CMO;
+        if (hasCompose && hasMask && !useGlobalOpacity)
+            requiredProgram.mainFragShader = QGLEngineSharedShaders::MainFragmentShader_CM;
+        if (!hasCompose && hasMask && useGlobalOpacity)
+            requiredProgram.mainFragShader = QGLEngineSharedShaders::MainFragmentShader_MO;
+        if (!hasCompose && hasMask && !useGlobalOpacity)
+            requiredProgram.mainFragShader = QGLEngineSharedShaders::MainFragmentShader_M;
+        if (hasCompose && !hasMask && useGlobalOpacity)
+            requiredProgram.mainFragShader = QGLEngineSharedShaders::MainFragmentShader_CO;
+        if (hasCompose && !hasMask && !useGlobalOpacity)
+            requiredProgram.mainFragShader = QGLEngineSharedShaders::MainFragmentShader_C;
+        if (!hasCompose && !hasMask && useGlobalOpacity)
+            requiredProgram.mainFragShader = QGLEngineSharedShaders::MainFragmentShader_O;
+        if (!hasCompose && !hasMask && !useGlobalOpacity)
+            requiredProgram.mainFragShader = QGLEngineSharedShaders::MainFragmentShader;
+    }
+
+    if (hasMask) {
+        if (maskType == PixelMask) {
+            requiredProgram.maskFragShader = QGLEngineSharedShaders::MaskFragmentShader;
+            texCoords = true;
+        } else if (maskType == SubPixelMaskPass1) {
+            requiredProgram.maskFragShader = QGLEngineSharedShaders::RgbMaskFragmentShaderPass1;
+            texCoords = true;
+        } else if (maskType == SubPixelMaskPass2) {
+            requiredProgram.maskFragShader = QGLEngineSharedShaders::RgbMaskFragmentShaderPass2;
+            texCoords = true;
+        } else if (maskType == SubPixelWithGammaMask) {
+            requiredProgram.maskFragShader = QGLEngineSharedShaders::RgbMaskWithGammaFragmentShader;
+            texCoords = true;
+        } else {
+            qCritical("QGLEngineShaderManager::useCorrectShaderProg() - Unknown mask type");
+        }
+    } else {
+        requiredProgram.maskFragShader = QGLEngineSharedShaders::NoMaskFragmentShader;
+    }
+
+    if (hasCompose) {
+        switch (compositionMode) {
+            case QPainter::CompositionMode_Multiply:
+                requiredProgram.compositionFragShader = QGLEngineSharedShaders::MultiplyCompositionModeFragmentShader;
+                break;
+            case QPainter::CompositionMode_Screen:
+                requiredProgram.compositionFragShader = QGLEngineSharedShaders::ScreenCompositionModeFragmentShader;
+                break;
+            case QPainter::CompositionMode_Overlay:
+                requiredProgram.compositionFragShader = QGLEngineSharedShaders::OverlayCompositionModeFragmentShader;
+                break;
+            case QPainter::CompositionMode_Darken:
+                requiredProgram.compositionFragShader = QGLEngineSharedShaders::DarkenCompositionModeFragmentShader;
+                break;
+            case QPainter::CompositionMode_Lighten:
+                requiredProgram.compositionFragShader = QGLEngineSharedShaders::LightenCompositionModeFragmentShader;
+                break;
+            case QPainter::CompositionMode_ColorDodge:
+                requiredProgram.compositionFragShader = QGLEngineSharedShaders::ColorDodgeCompositionModeFragmentShader;
+                break;
+            case QPainter::CompositionMode_ColorBurn:
+                requiredProgram.compositionFragShader = QGLEngineSharedShaders::ColorBurnCompositionModeFragmentShader;
+                break;
+            case QPainter::CompositionMode_HardLight:
+                requiredProgram.compositionFragShader = QGLEngineSharedShaders::HardLightCompositionModeFragmentShader;
+                break;
+            case QPainter::CompositionMode_SoftLight:
+                requiredProgram.compositionFragShader = QGLEngineSharedShaders::SoftLightCompositionModeFragmentShader;
+                break;
+            case QPainter::CompositionMode_Difference:
+                requiredProgram.compositionFragShader = QGLEngineSharedShaders::DifferenceCompositionModeFragmentShader;
+                break;
+            case QPainter::CompositionMode_Exclusion:
+                requiredProgram.compositionFragShader = QGLEngineSharedShaders::ExclusionCompositionModeFragmentShader;
+                break;
+            default:
+                qWarning("QGLEngineShaderManager::useCorrectShaderProg() - Unsupported composition mode");
+        }
+    } else {
+        requiredProgram.compositionFragShader = QGLEngineSharedShaders::NoCompositionModeFragmentShader;
+    }
+
+    // Choose vertex shader main function
+    if (opacityMode == AttributeOpacity) {
+        Q_ASSERT(texCoords);
+        requiredProgram.mainVertexShader = QGLEngineSharedShaders::MainWithTexCoordsAndOpacityVertexShader;
+    } else if (texCoords) {
+        requiredProgram.mainVertexShader = QGLEngineSharedShaders::MainWithTexCoordsVertexShader;
+    } else {
+        requiredProgram.mainVertexShader = QGLEngineSharedShaders::MainVertexShader;
+    }
+    requiredProgram.useTextureCoords = texCoords;
+    requiredProgram.useOpacityAttribute = (opacityMode == AttributeOpacity);
+    if (complexGeometry && srcPixelType == Qt::SolidPattern) {
+        requiredProgram.positionVertexShader = QGLEngineSharedShaders::ComplexGeometryPositionOnlyVertexShader;
+        requiredProgram.usePmvMatrixAttribute = false;
+    } else {
+        requiredProgram.usePmvMatrixAttribute = true;
+
+        // Force complexGeometry off, since we currently don't support that mode for
+        // non-solid brushes
+        complexGeometry = false;
+    }
+
+    // At this point, requiredProgram is fully populated so try to find the program in the cache
+    currentShaderProg = sharedShaders->findProgramInCache(requiredProgram);
+
+    if (currentShaderProg && useCustomSrc) {
+        customSrcStage->setUniforms(currentShaderProg->program);
+    }
+
+    // Make sure all the vertex attribute arrays the program uses are enabled (and the ones it
+    // doesn't use are disabled)
+    QGLContextPrivate* ctx_d = ctx->d_func();
+    ctx_d->setVertexAttribArrayEnabled(QT_VERTEX_COORDS_ATTR, true);
+    ctx_d->setVertexAttribArrayEnabled(QT_TEXTURE_COORDS_ATTR, currentShaderProg && currentShaderProg->useTextureCoords);
+    ctx_d->setVertexAttribArrayEnabled(QT_OPACITY_ATTR, currentShaderProg && currentShaderProg->useOpacityAttribute);
+
+    shaderProgNeedsChanging = false;
+    return true;
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/gl2paintengineex/qglengineshadermanager_p.h b/src/opengl/gl2paintengineex/qglengineshadermanager_p.h
new file mode 100644
index 0000000000..7cc9dc3bd4
--- /dev/null
+++ b/src/opengl/gl2paintengineex/qglengineshadermanager_p.h
@@ -0,0 +1,513 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+/*
+    VERTEX SHADERS
+    ==============
+
+    Vertex shaders are specified as multiple (partial) shaders. On desktop,
+    this works fine. On ES, QGLShader & QGLShaderProgram will make partial
+    shaders work by concatenating the source in each QGLShader and compiling
+    it as a single shader. This is abstracted nicely by QGLShaderProgram and
+    the GL2 engine doesn't need to worry about it.
+
+    Generally, there's two vertex shader objects. The position shaders are
+    the ones which set gl_Position. There's also two "main" vertex shaders,
+    one which just calls the position shader and another which also passes
+    through some texture coordinates from a vertex attribute array to a
+    varying. These texture coordinates are used for mask position in text
+    rendering and for the source coordinates in drawImage/drawPixmap. There's
+    also a "Simple" vertex shader for rendering a solid colour (used to render
+    into the stencil buffer where the actual colour value is discarded).
+
+    The position shaders for brushes look scary. This is because many of the
+    calculations which logically belong in the fragment shader have been moved
+    into the vertex shader to improve performance. This is why the position
+    calculation is in a separate shader. Not only does it calculate the
+    position, but it also calculates some data to be passed to the fragment
+    shader as a varying. It is optimal to move as much of the calculation as
+    possible into the vertex shader as this is executed less often.
+
+    The varyings passed to the fragment shaders are interpolated (which is
+    cheap). Unfortunately, GL will apply perspective correction to the
+    interpolation calusing errors. To get around this, the vertex shader must
+    apply perspective correction itself and set the w-value of gl_Position to
+    zero. That way, GL will be tricked into thinking it doesn't need to apply a
+    perspective correction and use linear interpolation instead (which is what
+    we want). Of course, if the brush transform is affeine, no perspective
+    correction is needed and a simpler vertex shader can be used instead.
+
+    So there are the following "main" vertex shaders:
+        qglslMainVertexShader
+        qglslMainWithTexCoordsVertexShader
+
+    And the the following position vertex shaders:
+        qglslPositionOnlyVertexShader
+        qglslPositionWithTextureBrushVertexShader
+        qglslPositionWithPatternBrushVertexShader
+        qglslPositionWithLinearGradientBrushVertexShader
+        qglslPositionWithRadialGradientBrushVertexShader
+        qglslPositionWithConicalGradientBrushVertexShader
+        qglslAffinePositionWithTextureBrushVertexShader
+        qglslAffinePositionWithPatternBrushVertexShader
+        qglslAffinePositionWithLinearGradientBrushVertexShader
+        qglslAffinePositionWithRadialGradientBrushVertexShader
+        qglslAffinePositionWithConicalGradientBrushVertexShader
+
+    Leading to 23 possible vertex shaders
+
+
+    FRAGMENT SHADERS
+    ================
+
+    Fragment shaders are also specified as multiple (partial) shaders. The
+    different fragment shaders represent the different stages in Qt's fragment
+    pipeline. There are 1-3 stages in this pipeline: First stage is to get the
+    fragment's colour value. The next stage is to get the fragment's mask value
+    (coverage value for anti-aliasing) and the final stage is to blend the
+    incoming fragment with the background (for composition modes not supported
+    by GL).
+
+    Of these, the first stage will always be present. If Qt doesn't need to
+    apply anti-aliasing (because it's off or handled by multisampling) then
+    the coverage value doesn't need to be applied. (Note: There are two types
+    of mask, one for regular anti-aliasing and one for sub-pixel anti-
+    aliasing.) If the composition mode is one which GL supports natively then
+    the blending stage doesn't need to be applied.
+
+    As eash stage can have multiple implementations, they are abstracted as
+    GLSL function calls with the following signatures:
+
+    Brushes & image drawing are implementations of "qcolorp vec4 srcPixel()":
+        qglslImageSrcFragShader
+        qglslImageSrcWithPatternFragShader
+        qglslNonPremultipliedImageSrcFragShader
+        qglslSolidBrushSrcFragShader
+        qglslTextureBrushSrcFragShader
+        qglslTextureBrushWithPatternFragShader
+        qglslPatternBrushSrcFragShader
+        qglslLinearGradientBrushSrcFragShader
+        qglslRadialGradientBrushSrcFragShader
+        qglslConicalGradientBrushSrcFragShader
+    NOTE: It is assumed the colour returned by srcPixel() is pre-multiplied
+
+    Masks are implementations of "qcolorp vec4 applyMask(qcolorp vec4 src)":
+        qglslMaskFragmentShader
+        qglslRgbMaskFragmentShaderPass1
+        qglslRgbMaskFragmentShaderPass2
+        qglslRgbMaskWithGammaFragmentShader
+
+    Composition modes are "qcolorp vec4 compose(qcolorp vec4 src)":
+        qglslColorBurnCompositionModeFragmentShader
+        qglslColorDodgeCompositionModeFragmentShader
+        qglslDarkenCompositionModeFragmentShader
+        qglslDifferenceCompositionModeFragmentShader
+        qglslExclusionCompositionModeFragmentShader
+        qglslHardLightCompositionModeFragmentShader
+        qglslLightenCompositionModeFragmentShader
+        qglslMultiplyCompositionModeFragmentShader
+        qglslOverlayCompositionModeFragmentShader
+        qglslScreenCompositionModeFragmentShader
+        qglslSoftLightCompositionModeFragmentShader
+
+
+    Note: In the future, some GLSL compilers will support an extension allowing
+          a new 'color' precision specifier. To support this, qcolorp is used for
+          all color components so it can be defined to colorp or lowp depending upon
+          the implementation.
+
+    So there are differnt frament shader main functions, depending on the
+    number & type of pipelines the fragment needs to go through.
+
+    The choice of which main() fragment shader string to use depends on:
+        - Use of global opacity
+        - Brush style (some brushes apply opacity themselves)
+        - Use & type of mask (TODO: Need to support high quality anti-aliasing & text)
+        - Use of non-GL Composition mode
+
+    Leading to the following fragment shader main functions:
+        gl_FragColor = compose(applyMask(srcPixel()*globalOpacity));
+        gl_FragColor = compose(applyMask(srcPixel()));
+        gl_FragColor = applyMask(srcPixel()*globalOpacity);
+        gl_FragColor = applyMask(srcPixel());
+        gl_FragColor = compose(srcPixel()*globalOpacity);
+        gl_FragColor = compose(srcPixel());
+        gl_FragColor = srcPixel()*globalOpacity;
+        gl_FragColor = srcPixel();
+
+    Called:
+        qglslMainFragmentShader_CMO
+        qglslMainFragmentShader_CM
+        qglslMainFragmentShader_MO
+        qglslMainFragmentShader_M
+        qglslMainFragmentShader_CO
+        qglslMainFragmentShader_C
+        qglslMainFragmentShader_O
+        qglslMainFragmentShader
+
+    Where:
+        M = Mask
+        C = Composition
+        O = Global Opacity
+
+
+    CUSTOM SHADER CODE
+    ==================
+
+    The use of custom shader code is supported by the engine for drawImage and
+    drawPixmap calls. This is implemented via hooks in the fragment pipeline.
+
+    The custom shader is passed to the engine as a partial fragment shader
+    (QGLCustomShaderStage). The shader will implement a pre-defined method name
+    which Qt's fragment pipeline will call:
+
+        lowp vec4 customShader(lowp sampler2d imageTexture, highp vec2 textureCoords)
+
+    The provided src and srcCoords parameters can be used to sample from the
+    source image.
+
+    Transformations, clipping, opacity, and composition modes set using QPainter
+    will be respected when using the custom shader hook.
+*/
+
+#ifndef QGLENGINE_SHADER_MANAGER_H
+#define QGLENGINE_SHADER_MANAGER_H
+
+#include <QGLShader>
+#include <QGLShaderProgram>
+#include <QPainter>
+#include <private/qgl_p.h>
+#include <private/qglcustomshaderstage_p.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(OpenGL)
+
+
+/*
+struct QGLEngineCachedShaderProg
+{
+    QGLEngineCachedShaderProg(QGLEngineShaderManager::ShaderName vertexMain,
+                              QGLEngineShaderManager::ShaderName vertexPosition,
+                              QGLEngineShaderManager::ShaderName fragMain,
+                              QGLEngineShaderManager::ShaderName pixelSrc,
+                              QGLEngineShaderManager::ShaderName mask,
+                              QGLEngineShaderManager::ShaderName composition);
+
+    int cacheKey;
+    QGLShaderProgram* program;
+}
+*/
+
+static const GLuint QT_VERTEX_COORDS_ATTR  = 0;
+static const GLuint QT_TEXTURE_COORDS_ATTR = 1;
+static const GLuint QT_OPACITY_ATTR = 2;
+static const GLuint QT_PMV_MATRIX_1_ATTR = 3;
+static const GLuint QT_PMV_MATRIX_2_ATTR = 4;
+static const GLuint QT_PMV_MATRIX_3_ATTR = 5;
+
+class QGLEngineShaderProg;
+
+class Q_OPENGL_EXPORT QGLEngineSharedShaders
+{
+    Q_GADGET
+public:
+
+    enum SnippetName {
+        MainVertexShader,
+        MainWithTexCoordsVertexShader,
+        MainWithTexCoordsAndOpacityVertexShader,
+
+        // UntransformedPositionVertexShader must be first in the list:
+        UntransformedPositionVertexShader,
+        PositionOnlyVertexShader,
+        ComplexGeometryPositionOnlyVertexShader,
+        PositionWithPatternBrushVertexShader,
+        PositionWithLinearGradientBrushVertexShader,
+        PositionWithConicalGradientBrushVertexShader,
+        PositionWithRadialGradientBrushVertexShader,
+        PositionWithTextureBrushVertexShader,
+        AffinePositionWithPatternBrushVertexShader,
+        AffinePositionWithLinearGradientBrushVertexShader,
+        AffinePositionWithConicalGradientBrushVertexShader,
+        AffinePositionWithRadialGradientBrushVertexShader,
+        AffinePositionWithTextureBrushVertexShader,
+
+        // MainFragmentShader_CMO must be first in the list:
+        MainFragmentShader_CMO,
+        MainFragmentShader_CM,
+        MainFragmentShader_MO,
+        MainFragmentShader_M,
+        MainFragmentShader_CO,
+        MainFragmentShader_C,
+        MainFragmentShader_O,
+        MainFragmentShader,
+        MainFragmentShader_ImageArrays,
+
+        // ImageSrcFragmentShader must be first in the list::
+        ImageSrcFragmentShader,
+        ImageSrcWithPatternFragmentShader,
+        NonPremultipliedImageSrcFragmentShader,
+        CustomImageSrcFragmentShader,
+        SolidBrushSrcFragmentShader,
+        TextureBrushSrcFragmentShader,
+        TextureBrushSrcWithPatternFragmentShader,
+        PatternBrushSrcFragmentShader,
+        LinearGradientBrushSrcFragmentShader,
+        RadialGradientBrushSrcFragmentShader,
+        ConicalGradientBrushSrcFragmentShader,
+        ShockingPinkSrcFragmentShader,
+
+        // NoMaskFragmentShader must be first in the list:
+        NoMaskFragmentShader,
+        MaskFragmentShader,
+        RgbMaskFragmentShaderPass1,
+        RgbMaskFragmentShaderPass2,
+        RgbMaskWithGammaFragmentShader,
+
+        // NoCompositionModeFragmentShader must be first in the list:
+        NoCompositionModeFragmentShader,
+        MultiplyCompositionModeFragmentShader,
+        ScreenCompositionModeFragmentShader,
+        OverlayCompositionModeFragmentShader,
+        DarkenCompositionModeFragmentShader,
+        LightenCompositionModeFragmentShader,
+        ColorDodgeCompositionModeFragmentShader,
+        ColorBurnCompositionModeFragmentShader,
+        HardLightCompositionModeFragmentShader,
+        SoftLightCompositionModeFragmentShader,
+        DifferenceCompositionModeFragmentShader,
+        ExclusionCompositionModeFragmentShader,
+
+        TotalSnippetCount, InvalidSnippetName
+    };
+#if defined (QT_DEBUG)
+    Q_ENUMS(SnippetName)
+    static QByteArray snippetNameStr(SnippetName snippetName);
+#endif
+
+/*
+    // These allow the ShaderName enum to be used as a cache key
+    const int mainVertexOffset = 0;
+    const int positionVertexOffset = (1<<2) - PositionOnlyVertexShader;
+    const int mainFragOffset = (1<<6) - MainFragmentShader_CMO;
+    const int srcPixelOffset = (1<<10) - ImageSrcFragmentShader;
+    const int maskOffset = (1<<14) - NoMaskShader;
+    const int compositionOffset = (1 << 16) - MultiplyCompositionModeFragmentShader;
+*/
+
+    QGLEngineSharedShaders(const QGLContext *context);
+    ~QGLEngineSharedShaders();
+
+    QGLShaderProgram *simpleProgram() { return simpleShaderProg; }
+    QGLShaderProgram *blitProgram() { return blitShaderProg; }
+    // Compile the program if it's not already in the cache, return the item in the cache.
+    QGLEngineShaderProg *findProgramInCache(const QGLEngineShaderProg &prog);
+    // Compile the custom shader if it's not already in the cache, return the item in the cache.
+
+    static QGLEngineSharedShaders *shadersForContext(const QGLContext *context);
+
+    // Ideally, this would be static and cleanup all programs in all contexts which
+    // contain the custom code. Currently it is just a hint and we rely on deleted
+    // custom shaders being cleaned up by being kicked out of the cache when it's
+    // full.
+    void cleanupCustomStage(QGLCustomShaderStage* stage);
+
+private:
+    QGLSharedResourceGuard ctxGuard;
+    QGLShaderProgram *blitShaderProg;
+    QGLShaderProgram *simpleShaderProg;
+    QList<QGLEngineShaderProg*> cachedPrograms;
+    QList<QGLShader *> shaders;
+
+    static const char* qShaderSnippets[TotalSnippetCount];
+};
+
+
+class QGLEngineShaderProg
+{
+public:
+    QGLEngineShaderProg() : program(0) {}
+
+    ~QGLEngineShaderProg() {
+        if (program)
+            delete program;
+    }
+
+    QGLEngineSharedShaders::SnippetName mainVertexShader;
+    QGLEngineSharedShaders::SnippetName positionVertexShader;
+    QGLEngineSharedShaders::SnippetName mainFragShader;
+    QGLEngineSharedShaders::SnippetName srcPixelFragShader;
+    QGLEngineSharedShaders::SnippetName maskFragShader;
+    QGLEngineSharedShaders::SnippetName compositionFragShader;
+
+    QByteArray          customStageSource; //TODO: Decent cache key for custom stages
+    QGLShaderProgram*   program;
+
+    QVector<uint> uniformLocations;
+
+    bool                useTextureCoords;
+    bool                useOpacityAttribute;
+    bool                usePmvMatrixAttribute;
+
+    bool operator==(const QGLEngineShaderProg& other) {
+        // We don't care about the program
+        return ( mainVertexShader      == other.mainVertexShader &&
+                 positionVertexShader  == other.positionVertexShader &&
+                 mainFragShader        == other.mainFragShader &&
+                 srcPixelFragShader    == other.srcPixelFragShader &&
+                 maskFragShader        == other.maskFragShader &&
+                 compositionFragShader == other.compositionFragShader &&
+                 customStageSource     == other.customStageSource
+               );
+    }
+};
+
+class Q_OPENGL_EXPORT QGLEngineShaderManager : public QObject
+{
+    Q_OBJECT
+public:
+    QGLEngineShaderManager(QGLContext* context);
+    ~QGLEngineShaderManager();
+
+    enum MaskType {NoMask, PixelMask, SubPixelMaskPass1, SubPixelMaskPass2, SubPixelWithGammaMask};
+    enum PixelSrcType {
+        ImageSrc = Qt::TexturePattern+1,
+        NonPremultipliedImageSrc = Qt::TexturePattern+2,
+        PatternSrc = Qt::TexturePattern+3,
+        TextureSrcWithPattern = Qt::TexturePattern+4
+    };
+
+    enum Uniform {
+        ImageTexture,
+        PatternColor,
+        GlobalOpacity,
+        Depth,
+        MaskTexture,
+        FragmentColor,
+        LinearData,
+        Angle,
+        HalfViewportSize,
+        Fmp,
+        Fmp2MRadius2,
+        Inverse2Fmp2MRadius2,
+        InvertedTextureSize,
+        BrushTransform,
+        BrushTexture,
+        Matrix,
+        NumUniforms
+    };
+
+    enum OpacityMode {
+        NoOpacity,
+        UniformOpacity,
+        AttributeOpacity
+    };
+
+    // There are optimizations we can do, depending on the brush transform:
+    //    1) May not have to apply perspective-correction
+    //    2) Can use lower precision for matrix
+    void optimiseForBrushTransform(QTransform::TransformationType transformType);
+    void setSrcPixelType(Qt::BrushStyle);
+    void setSrcPixelType(PixelSrcType); // For non-brush sources, like pixmaps & images
+    void setOpacityMode(OpacityMode);
+    void setMaskType(MaskType);
+    void setCompositionMode(QPainter::CompositionMode);
+    void setCustomStage(QGLCustomShaderStage* stage);
+    void removeCustomStage();
+
+    GLuint getUniformLocation(Uniform id);
+
+    void setDirty(); // someone has manually changed the current shader program
+    bool useCorrectShaderProg(); // returns true if the shader program needed to be changed
+
+    void useSimpleProgram();
+    void useBlitProgram();
+    void setHasComplexGeometry(bool hasComplexGeometry)
+    {
+        complexGeometry = hasComplexGeometry;
+        shaderProgNeedsChanging = true;
+    }
+    bool hasComplexGeometry() const
+    {
+        return complexGeometry;
+    }
+
+    QGLShaderProgram* currentProgram(); // Returns pointer to the shader the manager has chosen
+    QGLShaderProgram* simpleProgram(); // Used to draw into e.g. stencil buffers
+    QGLShaderProgram* blitProgram(); // Used to blit a texture into the framebuffer
+
+    QGLEngineSharedShaders* sharedShaders;
+
+private:
+    QGLContext*     ctx;
+    bool            shaderProgNeedsChanging;
+    bool            complexGeometry;
+
+    // Current state variables which influence the choice of shader:
+    QTransform                  brushTransform;
+    int                         srcPixelType;
+    OpacityMode                 opacityMode;
+    MaskType                    maskType;
+    QPainter::CompositionMode   compositionMode;
+    QGLCustomShaderStage*       customSrcStage;
+
+    QGLEngineShaderProg*    currentShaderProg;
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif //QGLENGINE_SHADER_MANAGER_H
diff --git a/src/opengl/gl2paintengineex/qglengineshadersource_p.h b/src/opengl/gl2paintengineex/qglengineshadersource_p.h
new file mode 100644
index 0000000000..fc8b9ef4db
--- /dev/null
+++ b/src/opengl/gl2paintengineex/qglengineshadersource_p.h
@@ -0,0 +1,519 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+
+#ifndef QGL_ENGINE_SHADER_SOURCE_H
+#define QGL_ENGINE_SHADER_SOURCE_H
+
+#include "qglengineshadermanager_p.h"
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(OpenGL)
+
+
+static const char* const qglslMainVertexShader = "\n\
+    void setPosition(); \n\
+    void main(void) \n\
+    { \n\
+        setPosition(); \n\
+    }\n";
+
+static const char* const qglslMainWithTexCoordsVertexShader = "\n\
+    attribute highp   vec2      textureCoordArray; \n\
+    varying   highp   vec2      textureCoords; \n\
+    void setPosition(); \n\
+    void main(void) \n\
+    { \n\
+        setPosition(); \n\
+        textureCoords = textureCoordArray; \n\
+    }\n";
+
+static const char* const qglslMainWithTexCoordsAndOpacityVertexShader = "\n\
+    attribute highp   vec2      textureCoordArray; \n\
+    attribute lowp    float     opacityArray; \n\
+    varying   highp   vec2      textureCoords; \n\
+    varying   lowp    float     opacity; \n\
+    void setPosition(); \n\
+    void main(void) \n\
+    { \n\
+        setPosition(); \n\
+        textureCoords = textureCoordArray; \n\
+        opacity = opacityArray; \n\
+    }\n";
+
+// NOTE: We let GL do the perspective correction so texture lookups in the fragment
+//       shader are also perspective corrected.
+static const char* const qglslPositionOnlyVertexShader = "\n\
+    attribute highp   vec2      vertexCoordsArray; \n\
+    attribute highp   vec3      pmvMatrix1; \n\
+    attribute highp   vec3      pmvMatrix2; \n\
+    attribute highp   vec3      pmvMatrix3; \n\
+    void setPosition(void) \n\
+    { \n\
+        highp mat3 pmvMatrix = mat3(pmvMatrix1, pmvMatrix2, pmvMatrix3); \n\
+        vec3 transformedPos = pmvMatrix * vec3(vertexCoordsArray.xy, 1.0); \n\
+        gl_Position = vec4(transformedPos.xy, 0.0, transformedPos.z); \n\
+    }\n";
+
+static const char* const qglslComplexGeometryPositionOnlyVertexShader = "\n\
+    uniform highp mat3 matrix; \n\
+    attribute highp vec2 vertexCoordsArray; \n\
+    void setPosition(void) \n\
+    { \n\
+      gl_Position = vec4(matrix * vec3(vertexCoordsArray, 1), 1);\n\
+    } \n";
+
+static const char* const qglslUntransformedPositionVertexShader = "\n\
+    attribute highp   vec4      vertexCoordsArray; \n\
+    void setPosition(void) \n\
+    { \n\
+        gl_Position = vertexCoordsArray; \n\
+    }\n";
+
+// Pattern Brush - This assumes the texture size is 8x8 and thus, the inverted size is 0.125
+static const char* const qglslPositionWithPatternBrushVertexShader = "\n\
+    attribute highp   vec2      vertexCoordsArray; \n\
+    attribute highp   vec3      pmvMatrix1; \n\
+    attribute highp   vec3      pmvMatrix2; \n\
+    attribute highp   vec3      pmvMatrix3; \n\
+    uniform   mediump vec2      halfViewportSize; \n\
+    uniform   highp   vec2      invertedTextureSize; \n\
+    uniform   highp   mat3      brushTransform; \n\
+    varying   highp   vec2      patternTexCoords; \n\
+    void setPosition(void) \n\
+    { \n\
+        highp mat3 pmvMatrix = mat3(pmvMatrix1, pmvMatrix2, pmvMatrix3); \n\
+        vec3 transformedPos = pmvMatrix * vec3(vertexCoordsArray.xy, 1.0); \n\
+        gl_Position.xy = transformedPos.xy / transformedPos.z; \n\
+        mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \n\
+        mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1.0); \n\
+        mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \n\
+        gl_Position = vec4(gl_Position.xy * invertedHTexCoordsZ, 0.0, invertedHTexCoordsZ); \n\
+        patternTexCoords.xy = (hTexCoords.xy * 0.125) * invertedHTexCoordsZ; \n\
+    }\n";
+
+static const char* const qglslAffinePositionWithPatternBrushVertexShader
+                 = qglslPositionWithPatternBrushVertexShader;
+
+static const char* const qglslPatternBrushSrcFragmentShader = "\n\
+    uniform           sampler2D brushTexture; \n\
+    uniform   lowp    vec4      patternColor; \n\
+    varying   highp   vec2      patternTexCoords;\n\
+    lowp vec4 srcPixel() \n\
+    { \n\
+        return patternColor * (1.0 - texture2D(brushTexture, patternTexCoords).r); \n\
+    }\n";
+
+
+// Linear Gradient Brush
+static const char* const qglslPositionWithLinearGradientBrushVertexShader = "\n\
+    attribute highp   vec2      vertexCoordsArray; \n\
+    attribute highp   vec3      pmvMatrix1; \n\
+    attribute highp   vec3      pmvMatrix2; \n\
+    attribute highp   vec3      pmvMatrix3; \n\
+    uniform   mediump vec2      halfViewportSize; \n\
+    uniform   highp   vec3      linearData; \n\
+    uniform   highp   mat3      brushTransform; \n\
+    varying   mediump float     index; \n\
+    void setPosition() \n\
+    { \n\
+        highp mat3 pmvMatrix = mat3(pmvMatrix1, pmvMatrix2, pmvMatrix3); \n\
+        vec3 transformedPos = pmvMatrix * vec3(vertexCoordsArray.xy, 1.0); \n\
+        gl_Position.xy = transformedPos.xy / transformedPos.z; \n\
+        mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \n\
+        mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \n\
+        mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \n\
+        gl_Position = vec4(gl_Position.xy * invertedHTexCoordsZ, 0.0, invertedHTexCoordsZ); \n\
+        index = (dot(linearData.xy, hTexCoords.xy) * linearData.z) * invertedHTexCoordsZ; \n\
+    }\n";
+
+static const char* const qglslAffinePositionWithLinearGradientBrushVertexShader
+                 = qglslPositionWithLinearGradientBrushVertexShader;
+
+static const char* const qglslLinearGradientBrushSrcFragmentShader = "\n\
+    uniform           sampler2D brushTexture; \n\
+    varying   mediump float     index; \n\
+    lowp vec4 srcPixel() \n\
+    { \n\
+        mediump vec2 val = vec2(index, 0.5); \n\
+        return texture2D(brushTexture, val); \n\
+    }\n";
+
+
+// Conical Gradient Brush
+static const char* const qglslPositionWithConicalGradientBrushVertexShader = "\n\
+    attribute highp   vec2      vertexCoordsArray; \n\
+    attribute highp   vec3      pmvMatrix1; \n\
+    attribute highp   vec3      pmvMatrix2; \n\
+    attribute highp   vec3      pmvMatrix3; \n\
+    uniform   mediump vec2      halfViewportSize; \n\
+    uniform   highp   mat3      brushTransform; \n\
+    varying   highp   vec2      A; \n\
+    void setPosition(void) \n\
+    { \n\
+        highp mat3 pmvMatrix = mat3(pmvMatrix1, pmvMatrix2, pmvMatrix3); \n\
+        vec3 transformedPos = pmvMatrix * vec3(vertexCoordsArray.xy, 1.0); \n\
+        gl_Position.xy = transformedPos.xy / transformedPos.z; \n\
+        mediump vec2  viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \n\
+        mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \n\
+        mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \n\
+        gl_Position = vec4(gl_Position.xy * invertedHTexCoordsZ, 0.0, invertedHTexCoordsZ); \n\
+        A = hTexCoords.xy * invertedHTexCoordsZ; \n\
+    }\n";
+
+static const char* const qglslAffinePositionWithConicalGradientBrushVertexShader
+                 = qglslPositionWithConicalGradientBrushVertexShader;
+
+static const char* const qglslConicalGradientBrushSrcFragmentShader = "\n\
+    #define INVERSE_2PI 0.1591549430918953358 \n\
+    uniform           sampler2D brushTexture; \n\
+    uniform   mediump float     angle; \n\
+    varying   highp   vec2      A; \n\
+    lowp vec4 srcPixel() \n\
+    { \n\
+        highp float t; \n\
+        if (abs(A.y) == abs(A.x)) \n\
+            t = (atan(-A.y + 0.002, A.x) + angle) * INVERSE_2PI; \n\
+        else \n\
+            t = (atan(-A.y, A.x) + angle) * INVERSE_2PI; \n\
+        return texture2D(brushTexture, vec2(t - floor(t), 0.5)); \n\
+    }\n";
+
+
+// Radial Gradient Brush
+static const char* const qglslPositionWithRadialGradientBrushVertexShader = "\n\
+    attribute highp   vec2      vertexCoordsArray;\n\
+    attribute highp   vec3      pmvMatrix1; \n\
+    attribute highp   vec3      pmvMatrix2; \n\
+    attribute highp   vec3      pmvMatrix3; \n\
+    uniform   mediump vec2      halfViewportSize; \n\
+    uniform   highp   mat3      brushTransform; \n\
+    uniform   highp   vec2      fmp; \n\
+    varying   highp   float     b; \n\
+    varying   highp   vec2      A; \n\
+    void setPosition(void) \n\
+    {\n\
+        highp mat3 pmvMatrix = mat3(pmvMatrix1, pmvMatrix2, pmvMatrix3); \n\
+        vec3 transformedPos = pmvMatrix * vec3(vertexCoordsArray.xy, 1.0); \n\
+        gl_Position.xy = transformedPos.xy / transformedPos.z; \n\
+        mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \n\
+        mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \n\
+        mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \n\
+        gl_Position = vec4(gl_Position.xy * invertedHTexCoordsZ, 0.0, invertedHTexCoordsZ); \n\
+        A = hTexCoords.xy * invertedHTexCoordsZ; \n\
+        b = 2.0 * dot(A, fmp); \n\
+    }\n";
+
+static const char* const qglslAffinePositionWithRadialGradientBrushVertexShader
+                 = qglslPositionWithRadialGradientBrushVertexShader;
+
+static const char* const qglslRadialGradientBrushSrcFragmentShader = "\n\
+    uniform           sampler2D brushTexture; \n\
+    uniform   highp   float     fmp2_m_radius2; \n\
+    uniform   highp   float     inverse_2_fmp2_m_radius2; \n\
+    varying   highp   float     b; \n\
+    varying   highp   vec2      A; \n\
+    lowp vec4 srcPixel() \n\
+    { \n\
+        highp float c = -dot(A, A); \n\
+        highp vec2 val = vec2((-b + sqrt(b*b - 4.0*fmp2_m_radius2*c)) * inverse_2_fmp2_m_radius2, 0.5); \n\
+        return texture2D(brushTexture, val); \n\
+    }\n";
+
+
+// Texture Brush
+static const char* const qglslPositionWithTextureBrushVertexShader = "\n\
+    attribute highp   vec2      vertexCoordsArray; \n\
+    attribute highp   vec3      pmvMatrix1; \n\
+    attribute highp   vec3      pmvMatrix2; \n\
+    attribute highp   vec3      pmvMatrix3; \n\
+    uniform   mediump vec2      halfViewportSize; \n\
+    uniform   highp   vec2      invertedTextureSize; \n\
+    uniform   highp   mat3      brushTransform; \n\
+    varying   highp   vec2      brushTextureCoords; \n\
+    void setPosition(void) \n\
+    { \n\
+        highp mat3 pmvMatrix = mat3(pmvMatrix1, pmvMatrix2, pmvMatrix3); \n\
+        vec3 transformedPos = pmvMatrix * vec3(vertexCoordsArray.xy, 1.0); \n\
+        gl_Position.xy = transformedPos.xy / transformedPos.z; \n\
+        mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \n\
+        mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \n\
+        mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \n\
+        gl_Position = vec4(gl_Position.xy * invertedHTexCoordsZ, 0.0, invertedHTexCoordsZ); \n\
+        brushTextureCoords.xy = (hTexCoords.xy * invertedTextureSize) * gl_Position.w; \n\
+    }\n";
+
+static const char* const qglslAffinePositionWithTextureBrushVertexShader
+                 = qglslPositionWithTextureBrushVertexShader;
+
+#if defined(QT_OPENGL_ES_2)
+// OpenGL ES does not support GL_REPEAT wrap modes for NPOT textures. So instead,
+// we emulate GL_REPEAT by only taking the fractional part of the texture coords.
+// TODO: Special case POT textures which don't need this emulation
+static const char* const qglslTextureBrushSrcFragmentShader = "\n\
+    varying highp   vec2      brushTextureCoords; \n\
+    uniform         sampler2D brushTexture; \n\
+    lowp vec4 srcPixel() { \n\
+        return texture2D(brushTexture, fract(brushTextureCoords)); \n\
+    }\n";
+#else
+static const char* const qglslTextureBrushSrcFragmentShader = "\n\
+    varying   highp   vec2      brushTextureCoords; \n\
+    uniform           sampler2D brushTexture; \n\
+    lowp vec4 srcPixel() \n\
+    { \n\
+        return texture2D(brushTexture, brushTextureCoords); \n\
+    }\n";
+#endif
+
+static const char* const qglslTextureBrushSrcWithPatternFragmentShader = "\n\
+    varying   highp   vec2      brushTextureCoords; \n\
+    uniform   lowp    vec4      patternColor; \n\
+    uniform           sampler2D brushTexture; \n\
+    lowp vec4 srcPixel() \n\
+    { \n\
+        return patternColor * (1.0 - texture2D(brushTexture, brushTextureCoords).r); \n\
+    }\n";
+
+// Solid Fill Brush
+static const char* const qglslSolidBrushSrcFragmentShader = "\n\
+    uniform   lowp    vec4      fragmentColor; \n\
+    lowp vec4 srcPixel() \n\
+    { \n\
+        return fragmentColor; \n\
+    }\n";
+
+static const char* const qglslImageSrcFragmentShader = "\n\
+    varying   highp   vec2      textureCoords; \n\
+    uniform           sampler2D imageTexture; \n\
+    lowp vec4 srcPixel() \n\
+    { \n"
+        "return texture2D(imageTexture, textureCoords); \n"
+    "}\n";
+
+static const char* const qglslCustomSrcFragmentShader = "\n\
+    varying   highp   vec2      textureCoords; \n\
+    uniform           sampler2D imageTexture; \n\
+    lowp vec4 srcPixel() \n\
+    { \n\
+        return customShader(imageTexture, textureCoords); \n\
+    }\n";
+
+static const char* const qglslImageSrcWithPatternFragmentShader = "\n\
+    varying   highp   vec2      textureCoords; \n\
+    uniform   lowp    vec4      patternColor; \n\
+    uniform           sampler2D imageTexture; \n\
+    lowp vec4 srcPixel() \n\
+    { \n\
+        return patternColor * (1.0 - texture2D(imageTexture, textureCoords).r); \n\
+    }\n";
+
+static const char* const qglslNonPremultipliedImageSrcFragmentShader = "\n\
+    varying   highp   vec2      textureCoords; \n\
+    uniform          sampler2D imageTexture; \n\
+    lowp vec4 srcPixel() \n\
+    { \n\
+        lowp vec4 sample = texture2D(imageTexture, textureCoords); \n\
+        sample.rgb = sample.rgb * sample.a; \n\
+        return sample; \n\
+    }\n";
+
+static const char* const qglslShockingPinkSrcFragmentShader = "\n\
+    lowp vec4 srcPixel() \n\
+    { \n\
+        return vec4(0.98, 0.06, 0.75, 1.0); \n\
+    }\n";
+
+static const char* const qglslMainFragmentShader_ImageArrays = "\n\
+    varying   lowp    float     opacity; \n\
+    lowp vec4 srcPixel(); \n\
+    void main() \n\
+    { \n\
+        gl_FragColor = srcPixel() * opacity; \n\
+    }\n";
+
+static const char* const qglslMainFragmentShader_CMO = "\n\
+    uniform   lowp    float     globalOpacity; \n\
+    lowp vec4 srcPixel(); \n\
+    lowp vec4 applyMask(lowp vec4); \n\
+    lowp vec4 compose(lowp vec4); \n\
+    void main() \n\
+    { \n\
+        gl_FragColor = applyMask(compose(srcPixel()*globalOpacity))); \n\
+    }\n";
+
+static const char* const qglslMainFragmentShader_CM = "\n\
+    lowp vec4 srcPixel(); \n\
+    lowp vec4 applyMask(lowp vec4); \n\
+    lowp vec4 compose(lowp vec4); \n\
+    void main() \n\
+    { \n\
+        gl_FragColor = applyMask(compose(srcPixel())); \n\
+    }\n";
+
+static const char* const qglslMainFragmentShader_MO = "\n\
+    uniform   lowp    float     globalOpacity; \n\
+    lowp vec4 srcPixel(); \n\
+    lowp vec4 applyMask(lowp vec4); \n\
+    void main() \n\
+    { \n\
+        gl_FragColor = applyMask(srcPixel()*globalOpacity); \n\
+    }\n";
+
+static const char* const qglslMainFragmentShader_M = "\n\
+    lowp vec4 srcPixel(); \n\
+    lowp vec4 applyMask(lowp vec4); \n\
+    void main() \n\
+    { \n\
+        gl_FragColor = applyMask(srcPixel()); \n\
+    }\n";
+
+static const char* const qglslMainFragmentShader_CO = "\n\
+    uniform   lowp    float     globalOpacity; \n\
+    lowp vec4 srcPixel(); \n\
+    lowp vec4 compose(lowp vec4); \n\
+    void main() \n\
+    { \n\
+        gl_FragColor = compose(srcPixel()*globalOpacity); \n\
+    }\n";
+
+static const char* const qglslMainFragmentShader_C = "\n\
+    lowp vec4 srcPixel(); \n\
+    lowp vec4 compose(lowp vec4); \n\
+    void main() \n\
+    { \n\
+        gl_FragColor = compose(srcPixel()); \n\
+    }\n";
+
+static const char* const qglslMainFragmentShader_O = "\n\
+    uniform   lowp    float     globalOpacity; \n\
+    lowp vec4 srcPixel(); \n\
+    void main() \n\
+    { \n\
+        gl_FragColor = srcPixel()*globalOpacity; \n\
+    }\n";
+
+static const char* const qglslMainFragmentShader = "\n\
+    lowp vec4 srcPixel(); \n\
+    void main() \n\
+    { \n\
+        gl_FragColor = srcPixel(); \n\
+    }\n";
+
+static const char* const qglslMaskFragmentShader = "\n\
+    varying   highp   vec2      textureCoords;\n\
+    uniform           sampler2D maskTexture;\n\
+    lowp vec4 applyMask(lowp vec4 src) \n\
+    {\n\
+        lowp vec4 mask = texture2D(maskTexture, textureCoords); \n\
+        return src * mask.a; \n\
+    }\n";
+
+// For source over with subpixel antialiasing, the final color is calculated per component as follows
+// (.a is alpha component, .c is red, green or blue component):
+// alpha = src.a * mask.c * opacity
+// dest.c = dest.c * (1 - alpha) + src.c * alpha
+//
+// In the first pass, calculate: dest.c = dest.c * (1 - alpha) with blend funcs: zero, 1 - source color
+// In the second pass, calculate: dest.c = dest.c + src.c * alpha with blend funcs: one, one
+//
+// If source is a solid color (src is constant), only the first pass is needed, with blend funcs: constant, 1 - source color
+
+// For source composition with subpixel antialiasing, the final color is calculated per component as follows:
+// alpha = src.a * mask.c * opacity
+// dest.c = dest.c * (1 - mask.c) + src.c * alpha
+//
+
+static const char* const qglslRgbMaskFragmentShaderPass1 = "\n\
+    varying   highp   vec2      textureCoords;\n\
+    uniform           sampler2D maskTexture;\n\
+    lowp vec4 applyMask(lowp vec4 src) \n\
+    { \n\
+        lowp vec4 mask = texture2D(maskTexture, textureCoords); \n\
+        return src.a * mask; \n\
+    }\n";
+
+static const char* const qglslRgbMaskFragmentShaderPass2 = "\n\
+    varying   highp   vec2      textureCoords;\n\
+    uniform           sampler2D maskTexture;\n\
+    lowp vec4 applyMask(lowp vec4 src) \n\
+    { \n\
+        lowp vec4 mask = texture2D(maskTexture, textureCoords); \n\
+        return src * mask; \n\
+    }\n";
+
+/*
+    Left to implement:
+        RgbMaskFragmentShader,
+        RgbMaskWithGammaFragmentShader,
+
+        MultiplyCompositionModeFragmentShader,
+        ScreenCompositionModeFragmentShader,
+        OverlayCompositionModeFragmentShader,
+        DarkenCompositionModeFragmentShader,
+        LightenCompositionModeFragmentShader,
+        ColorDodgeCompositionModeFragmentShader,
+        ColorBurnCompositionModeFragmentShader,
+        HardLightCompositionModeFragmentShader,
+        SoftLightCompositionModeFragmentShader,
+        DifferenceCompositionModeFragmentShader,
+        ExclusionCompositionModeFragmentShader,
+*/
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // GLGC_SHADER_SOURCE_H
diff --git a/src/opengl/gl2paintengineex/qglgradientcache.cpp b/src/opengl/gl2paintengineex/qglgradientcache.cpp
new file mode 100644
index 0000000000..075f7d15ea
--- /dev/null
+++ b/src/opengl/gl2paintengineex/qglgradientcache.cpp
@@ -0,0 +1,206 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qglgradientcache_p.h"
+#include <private/qdrawhelper_p.h>
+#include <private/qgl_p.h>
+#include <QtCore/qmutex.h>
+
+QT_BEGIN_NAMESPACE
+
+class QGL2GradientCacheWrapper
+{
+public:
+    QGL2GradientCache *cacheForContext(const QGLContext *context) {
+        QMutexLocker lock(&m_mutex);
+        return m_resource.value(context);
+    }
+
+private:
+    QGLContextGroupResource<QGL2GradientCache> m_resource;
+    QMutex m_mutex;
+};
+
+Q_GLOBAL_STATIC(QGL2GradientCacheWrapper, qt_gradient_caches)
+
+QGL2GradientCache *QGL2GradientCache::cacheForContext(const QGLContext *context)
+{
+    return qt_gradient_caches()->cacheForContext(context);
+}
+
+void QGL2GradientCache::cleanCache()
+{
+    QMutexLocker lock(&m_mutex);
+    QGLGradientColorTableHash::const_iterator it = cache.constBegin();
+    for (; it != cache.constEnd(); ++it) {
+        const CacheInfo &cache_info = it.value();
+        glDeleteTextures(1, &cache_info.texId);
+    }
+    cache.clear();
+}
+
+GLuint QGL2GradientCache::getBuffer(const QGradient &gradient, qreal opacity)
+{
+    QMutexLocker lock(&m_mutex);
+    quint64 hash_val = 0;
+
+    QGradientStops stops = gradient.stops();
+    for (int i = 0; i < stops.size() && i <= 2; i++)
+        hash_val += stops[i].second.rgba();
+
+    QGLGradientColorTableHash::const_iterator it = cache.constFind(hash_val);
+
+    if (it == cache.constEnd())
+        return addCacheElement(hash_val, gradient, opacity);
+    else {
+        do {
+            const CacheInfo &cache_info = it.value();
+            if (cache_info.stops == stops && cache_info.opacity == opacity
+                && cache_info.interpolationMode == gradient.interpolationMode())
+            {
+                return cache_info.texId;
+            }
+            ++it;
+        } while (it != cache.constEnd() && it.key() == hash_val);
+        // an exact match for these stops and opacity was not found, create new cache
+        return addCacheElement(hash_val, gradient, opacity);
+    }
+}
+
+
+GLuint QGL2GradientCache::addCacheElement(quint64 hash_val, const QGradient &gradient, qreal opacity)
+{
+    if (cache.size() == maxCacheSize()) {
+        int elem_to_remove = qrand() % maxCacheSize();
+        quint64 key = cache.keys()[elem_to_remove];
+
+        // need to call glDeleteTextures on each removed cache entry:
+        QGLGradientColorTableHash::const_iterator it = cache.constFind(key);
+        do {
+            glDeleteTextures(1, &it.value().texId);
+        } while (++it != cache.constEnd() && it.key() == key);
+        cache.remove(key); // may remove more than 1, but OK
+    }
+
+    CacheInfo cache_entry(gradient.stops(), opacity, gradient.interpolationMode());
+    uint buffer[1024];
+    generateGradientColorTable(gradient, buffer, paletteSize(), opacity);
+    glGenTextures(1, &cache_entry.texId);
+    glBindTexture(GL_TEXTURE_2D, cache_entry.texId);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, paletteSize(), 1,
+                    0, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
+    return cache.insert(hash_val, cache_entry).value().texId;
+}
+
+
+// GL's expects pixels in RGBA (when using GL_RGBA), bin-endian (ABGR on x86).
+// Qt always stores in ARGB reguardless of the byte-order the mancine uses.
+static inline uint qtToGlColor(uint c)
+{
+    uint o;
+#if Q_BYTE_ORDER == Q_LITTLE_ENDIAN
+    o = (c & 0xff00ff00)  // alpha & green already in the right place
+        | ((c >> 16) & 0x000000ff) // red
+        | ((c << 16) & 0x00ff0000); // blue
+#else //Q_BIG_ENDIAN
+    o = (c << 8)
+        | ((c >> 24) & 0x000000ff);
+#endif // Q_BYTE_ORDER
+    return o;
+}
+
+//TODO: Let GL generate the texture using an FBO
+void QGL2GradientCache::generateGradientColorTable(const QGradient& gradient, uint *colorTable, int size, qreal opacity) const
+{
+    int pos = 0;
+    QGradientStops s = gradient.stops();
+    QVector<uint> colors(s.size());
+
+    for (int i = 0; i < s.size(); ++i)
+        colors[i] = s[i].second.rgba(); // Qt LIES! It returns ARGB (on little-endian AND on big-endian)
+
+    bool colorInterpolation = (gradient.interpolationMode() == QGradient::ColorInterpolation);
+
+    uint alpha = qRound(opacity * 256);
+    uint current_color = ARGB_COMBINE_ALPHA(colors[0], alpha);
+    qreal incr = 1.0 / qreal(size);
+    qreal fpos = 1.5 * incr;
+    colorTable[pos++] = qtToGlColor(PREMUL(current_color));
+
+    while (fpos <= s.first().first) {
+        colorTable[pos] = colorTable[pos - 1];
+        pos++;
+        fpos += incr;
+    }
+
+    if (colorInterpolation)
+        current_color = PREMUL(current_color);
+
+    for (int i = 0; i < s.size() - 1; ++i) {
+        qreal delta = 1/(s[i+1].first - s[i].first);
+        uint next_color = ARGB_COMBINE_ALPHA(colors[i+1], alpha);
+        if (colorInterpolation)
+            next_color = PREMUL(next_color);
+
+        while (fpos < s[i+1].first && pos < size) {
+            int dist = int(256 * ((fpos - s[i].first) * delta));
+            int idist = 256 - dist;
+            if (colorInterpolation)
+                colorTable[pos] = qtToGlColor(INTERPOLATE_PIXEL_256(current_color, idist, next_color, dist));
+            else
+                colorTable[pos] = qtToGlColor(PREMUL(INTERPOLATE_PIXEL_256(current_color, idist, next_color, dist)));
+            ++pos;
+            fpos += incr;
+        }
+        current_color = next_color;
+    }
+
+    Q_ASSERT(s.size() > 0);
+
+    uint last_color = qtToGlColor(PREMUL(ARGB_COMBINE_ALPHA(colors[s.size() - 1], alpha)));
+    for (;pos < size; ++pos)
+        colorTable[pos] = last_color;
+
+    // Make sure the last color stop is represented at the end of the table
+    colorTable[size-1] = last_color;
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/gl2paintengineex/qglgradientcache_p.h b/src/opengl/gl2paintengineex/qglgradientcache_p.h
new file mode 100644
index 0000000000..d1d56a178a
--- /dev/null
+++ b/src/opengl/gl2paintengineex/qglgradientcache_p.h
@@ -0,0 +1,98 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QMultiHash>
+#include <QObject>
+#include <QtOpenGL/QtOpenGL>
+#include <private/qgl_p.h>
+#include <QtCore/qmutex.h>
+
+QT_BEGIN_NAMESPACE
+
+class QGL2GradientCache
+{
+    struct CacheInfo
+    {
+        inline CacheInfo(QGradientStops s, qreal op, QGradient::InterpolationMode mode) :
+            stops(s), opacity(op), interpolationMode(mode) {}
+
+        GLuint texId;
+        QGradientStops stops;
+        qreal opacity;
+        QGradient::InterpolationMode interpolationMode;
+    };
+
+    typedef QMultiHash<quint64, CacheInfo> QGLGradientColorTableHash;
+
+public:
+    static QGL2GradientCache *cacheForContext(const QGLContext *context);
+
+    QGL2GradientCache(const QGLContext *) {}
+    ~QGL2GradientCache() { cleanCache(); }
+
+    GLuint getBuffer(const QGradient &gradient, qreal opacity);
+    inline int paletteSize() const { return 1024; }
+
+private:
+    inline int maxCacheSize() const { return 60; }
+    inline void generateGradientColorTable(const QGradient& gradient,
+                                           uint *colorTable,
+                                           int size, qreal opacity) const;
+    GLuint addCacheElement(quint64 hash_val, const QGradient &gradient, qreal opacity);
+    void cleanCache();
+
+    QGLGradientColorTableHash cache;
+    QMutex m_mutex;
+};
+
+QT_END_NAMESPACE
+
diff --git a/src/opengl/gl2paintengineex/qglshadercache_meego_p.h b/src/opengl/gl2paintengineex/qglshadercache_meego_p.h
new file mode 100644
index 0000000000..d20c731fc3
--- /dev/null
+++ b/src/opengl/gl2paintengineex/qglshadercache_meego_p.h
@@ -0,0 +1,457 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#ifndef QGLSHADERCACHE_MEEGO_P_H
+#define QGLSHADERCACHE_MEEGO_P_H
+
+#include <QtCore/qglobal.h>
+
+#if defined(QT_MEEGO_EXPERIMENTAL_SHADERCACHE) && defined(QT_OPENGL_ES_2)
+
+#include <QtCore/qcryptographichash.h>
+#include <QtCore/qsharedmemory.h>
+#include <QtCore/qsystemsemaphore.h>
+
+#ifndef QT_BOOTSTRAPPED
+#  include <GLES2/gl2ext.h>
+#endif
+#if defined(QT_DEBUG) || defined(QT_MEEGO_EXPERIMENTAL_SHADERCACHE_TRACE)
+#  include <syslog.h>
+#endif
+
+QT_BEGIN_HEADER
+
+/*
+    This cache stores internal Qt shader programs in shared memory.
+
+    This header file is ugly on purpose and can only be included once. It is only to be used
+    for the internal shader cache, not as a generic cache for anyone's shaders.
+
+    The cache stores either ShaderCacheMaxEntries shader programs or ShaderCacheDataSize kilobytes
+    of shader programs, whatever limit is reached first.
+
+    The layout of the cache is as outlined in the CachedShaders struct. After some
+    integers, an array of headers is reserved, then comes the space for the actual binaries.
+
+    Shader Programs are identified by the md5sum of their frag and vertex shader source code.
+
+    Shader Programs are never removed. The cache never shrinks or re-shuffles. This is done
+    on purpose to ensure minimum amount of locking, no alignment problems and very few write
+    operations.
+
+    Note: Locking the shader cache could be expensive, because the entire system might hang.
+    That's why the cache is immutable to minimize the time we need to keep it locked.
+
+    Why is it Meego specific?
+
+    First, the size is chosen so that it fits to generic meego usage. Second, on Meego, there's
+    always at least one Qt application active (the launcher), so the cache will never be destroyed.
+    Only when the last Qt app exits, the cache dies, which should only be when someone kills the
+    X11 server. And last but not least it was only tested with Meego's SGX driver.
+
+    There's a small tool in src/opengl/util/meego that dumps the contents of the cache.
+ */
+
+// anonymous namespace, prevent exporting of the private symbols
+namespace
+{
+
+struct CachedShaderHeader
+{
+    /* the index in the data[] member of CachedShaders */
+    int index;
+    /* the size of the binary shader */
+    GLsizei size;
+    /* the format of the binary shader */
+    GLenum format;
+    /* the md5sum of the frag+vertex shaders */
+    char md5Sum[16];
+};
+
+enum
+{
+    /* The maximum amount of shader programs the cache can hold */
+    ShaderCacheMaxEntries = 20
+};
+
+typedef CachedShaderHeader CachedShaderHeaders[ShaderCacheMaxEntries];
+
+enum
+{
+    // ShaderCacheDataSize is 20k minus the other data members of CachedShaders
+    ShaderCacheDataSize = 1024 * ShaderCacheMaxEntries - sizeof(CachedShaderHeaders) - 2 * sizeof(int)
+};
+
+struct CachedShaders
+{
+    /* How much space is still available in the cache */
+    inline int availableSize() const { return ShaderCacheDataSize - dataSize; }
+
+    /* The current amount of cached shaders */
+    int shaderCount;
+
+    /* The current amount (in bytes) of cached data */
+    int dataSize;
+
+    /* The headers describing the shaders */
+    CachedShaderHeaders headers;
+
+    /* The actual binary data of the shader programs */
+    char data[ShaderCacheDataSize];
+};
+
+//#define QT_DEBUG_SHADER_CACHE
+#ifdef QT_DEBUG_SHADER_CACHE
+static QDebug shaderCacheDebug()
+{
+    return QDebug(QtDebugMsg);
+}
+#else
+static inline QNoDebug shaderCacheDebug() { return QNoDebug(); }
+#endif
+
+class ShaderCacheSharedMemory
+{
+public:
+    ShaderCacheSharedMemory()
+        : shm(QLatin1String("qt_gles2_shadercache_" QT_VERSION_STR))
+    {
+        // we need a system semaphore here, since cache creation and initialization must be atomic
+        QSystemSemaphore attachSemaphore(QLatin1String("qt_gles2_shadercache_mutex_" QT_VERSION_STR), 1);
+
+        if (!attachSemaphore.acquire()) {
+            shaderCacheDebug() << "Unable to require shader cache semaphore:" << attachSemaphore.errorString();
+            return;
+        }
+
+        if (shm.attach()) {
+            // success!
+            shaderCacheDebug() << "Attached to shader cache";
+        } else {
+
+            // no cache exists - create and initialize it
+            if (shm.create(sizeof(CachedShaders))) {
+                shaderCacheDebug() << "Created new shader cache";
+                initializeCache();
+            } else {
+                shaderCacheDebug() << "Unable to create shader cache:" << shm.errorString();
+            }
+        }
+
+        attachSemaphore.release();
+    }
+
+    inline bool isAttached() const { return shm.isAttached(); }
+
+    inline bool lock() { return shm.lock(); }
+    inline bool unlock() { return shm.unlock(); }
+    inline void *data() { return shm.data(); }
+    inline QString errorString() { return shm.errorString(); }
+
+    ~ShaderCacheSharedMemory()
+    {
+        if (!shm.detach())
+            shaderCacheDebug() << "Unable to detach shader cache" << shm.errorString();
+    }
+
+private:
+    void initializeCache()
+    {
+        // no need to lock the shared memory since we're already protected by the
+        // attach system semaphore.
+
+        void *data = shm.data();
+        Q_ASSERT(data);
+
+        memset(data, 0, sizeof(CachedShaders));
+    }
+
+    QSharedMemory shm;
+};
+
+class ShaderCacheLocker
+{
+public:
+    inline ShaderCacheLocker(ShaderCacheSharedMemory *cache)
+        : shm(cache->lock() ? cache : (ShaderCacheSharedMemory *)0)
+    {
+        if (!shm)
+            shaderCacheDebug() << "Unable to lock shader cache" << cache->errorString();
+    }
+
+    inline bool isLocked() const { return shm; }
+
+    inline ~ShaderCacheLocker()
+    {
+        if (!shm)
+            return;
+        if (!shm->unlock())
+            shaderCacheDebug() << "Unable to unlock shader cache" << shm->errorString();
+    }
+
+private:
+    ShaderCacheSharedMemory *shm;
+};
+
+#ifdef QT_BOOTSTRAPPED
+} // end namespace
+#else
+
+static void traceCacheOverflow(const char *message)
+{
+#if defined(QT_DEBUG) || defined (QT_MEEGO_EXPERIMENTAL_SHADERCACHE_TRACE)
+    openlog(qPrintable(QCoreApplication::applicationName()), LOG_PID | LOG_ODELAY, LOG_USER);
+    syslog(LOG_DEBUG, message);
+    closelog();
+#endif
+    shaderCacheDebug() << message;
+}
+
+Q_GLOBAL_STATIC(ShaderCacheSharedMemory, shaderCacheSharedMemory)
+
+/*
+   Finds the index of the shader program identified by md5Sum in the cache.
+   Note: Does NOT lock the cache for reading, the cache must already be locked!
+
+   Returns -1 when no shader was found.
+ */
+static int qt_cache_index_unlocked(const QByteArray &md5Sum, CachedShaders *cache)
+{
+    for (int i = 0; i < cache->shaderCount; ++i) {
+        if (qstrncmp(md5Sum.constData(), cache->headers[i].md5Sum, 16) == 0) {
+            return i;
+        }
+    }
+    return -1;
+}
+
+/* Returns the index of the shader identified by md5Sum */
+static int qt_cache_index(const QByteArray &md5Sum)
+{
+    ShaderCacheSharedMemory *shm = shaderCacheSharedMemory();
+    if (!shm || !shm->isAttached())
+        return false;
+
+    Q_ASSERT(md5Sum.length() == 16);
+
+    ShaderCacheLocker locker(shm);
+    if (!locker.isLocked())
+        return false;
+
+    void *data = shm->data();
+    Q_ASSERT(data);
+
+    CachedShaders *cache = reinterpret_cast<CachedShaders *>(data);
+
+    return qt_cache_index_unlocked(md5Sum, cache);
+}
+
+/* Loads the cached shader at index \a shaderIndex into \a program
+ * Note: Since the cache is immutable, this operation doesn't lock the shared memory.
+ */
+static bool qt_cached_shader(QGLShaderProgram *program, const QGLContext *ctx, int shaderIndex)
+{
+    Q_ASSERT(shaderIndex >= 0 && shaderIndex <= ShaderCacheMaxEntries);
+    Q_ASSERT(program);
+
+    ShaderCacheSharedMemory *shm = shaderCacheSharedMemory();
+    if (!shm || !shm->isAttached())
+        return false;
+
+    void *data = shm->data();
+    Q_ASSERT(data);
+
+    CachedShaders *cache = reinterpret_cast<CachedShaders *>(data);
+
+    shaderCacheDebug() << "fetching cached shader at index" << shaderIndex
+                 << "dataIndex" << cache->headers[shaderIndex].index
+                 << "size" << cache->headers[shaderIndex].size
+                 << "format" << cache->headers[shaderIndex].format;
+
+    // call program->programId first, since that resolves the glProgramBinaryOES symbol
+    GLuint programId = program->programId();
+    glProgramBinaryOES(programId, cache->headers[shaderIndex].format,
+                       cache->data + cache->headers[shaderIndex].index,
+                       cache->headers[shaderIndex].size);
+
+    return true;
+}
+
+/* Stores the shader program in the cache. Returns false if there's an error with the cache, or
+   if the cache is too small to hold the shader. */
+static bool qt_cache_shader(const QGLShaderProgram *shader, const QGLContext *ctx, const QByteArray &md5Sum)
+{
+    ShaderCacheSharedMemory *shm = shaderCacheSharedMemory();
+    if (!shm || !shm->isAttached())
+        return false;
+
+    void *data = shm->data();
+    Q_ASSERT(data);
+
+    CachedShaders *cache = reinterpret_cast<CachedShaders *>(data);
+
+    ShaderCacheLocker locker(shm);
+    if (!locker.isLocked())
+        return false;
+
+    int cacheIdx = cache->shaderCount;
+    if (cacheIdx >= ShaderCacheMaxEntries) {
+        traceCacheOverflow("Qt OpenGL shader cache index overflow!");
+        return false;
+    }
+
+    // now that we have the lock on the shared memory, make sure no one
+    // inserted the shader already while we were unlocked
+    if (qt_cache_index_unlocked(md5Sum, cache) != -1)
+        return true; // already cached
+
+    shaderCacheDebug() << "Caching shader at index" << cacheIdx;
+
+    GLint binaryLength = 0;
+    glGetProgramiv(shader->programId(), GL_PROGRAM_BINARY_LENGTH_OES, &binaryLength);
+
+    if (!binaryLength) {
+        shaderCacheDebug() << "Unable to determine binary shader size!";
+        return false;
+    }
+
+    if (binaryLength > cache->availableSize()) {
+        traceCacheOverflow("Qt OpenGL shader cache data overflow!");
+        return false;
+    }
+
+    GLsizei size = 0;
+    GLenum format = 0;
+    glGetProgramBinaryOES(shader->programId(), binaryLength, &size, &format,
+            cache->data + cache->dataSize);
+
+    if (!size) {
+        shaderCacheDebug() << "Unable to get binary shader!";
+        return false;
+    }
+
+    cache->headers[cacheIdx].index = cache->dataSize;
+    cache->dataSize += binaryLength;
+    ++cache->shaderCount;
+    cache->headers[cacheIdx].size = binaryLength;
+    cache->headers[cacheIdx].format = format;
+
+    memcpy(cache->headers[cacheIdx].md5Sum, md5Sum.constData(), 16);
+
+    shaderCacheDebug() << "cached shader size" << size
+                       << "format" << format
+                       << "binarySize" << binaryLength
+                       << "cache index" << cacheIdx
+                       << "data index" << cache->headers[cacheIdx].index;
+
+    return true;
+}
+
+} // namespace
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(OpenGL)
+
+class CachedShader
+{
+public:
+    CachedShader(const QByteArray &fragSource, const QByteArray &vertexSource)
+        : cacheIdx(-1)
+    {
+        QCryptographicHash md5Hash(QCryptographicHash::Md5);
+
+        md5Hash.addData(fragSource);
+        md5Hash.addData(vertexSource);
+
+        md5Sum = md5Hash.result();
+    }
+
+    bool isCached()
+    {
+        return cacheIndex() != -1;
+    }
+
+    int cacheIndex()
+    {
+        if (cacheIdx != -1)
+            return cacheIdx;
+        cacheIdx = qt_cache_index(md5Sum);
+        return cacheIdx;
+    }
+
+    bool load(QGLShaderProgram *program, const QGLContext *ctx)
+    {
+        if (cacheIndex() == -1)
+            return false;
+        return qt_cached_shader(program, ctx, cacheIdx);
+    }
+
+    bool store(QGLShaderProgram *program, const QGLContext *ctx)
+    {
+        return qt_cache_shader(program, ctx, md5Sum);
+    }
+
+private:
+    QByteArray md5Sum;
+    int cacheIdx;
+};
+
+
+QT_END_NAMESPACE
+
+#endif
+
+QT_END_HEADER
+
+#endif
+#endif
diff --git a/src/opengl/gl2paintengineex/qglshadercache_p.h b/src/opengl/gl2paintengineex/qglshadercache_p.h
new file mode 100644
index 0000000000..6e496abf7c
--- /dev/null
+++ b/src/opengl/gl2paintengineex/qglshadercache_p.h
@@ -0,0 +1,98 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#ifndef QGLSHADERCACHE_P_H
+#define QGLSHADERCACHE_P_H
+
+#include <QtCore/qglobal.h>
+
+#if defined(QT_MEEGO_EXPERIMENTAL_SHADERCACHE) && defined(QT_OPENGL_ES_2)
+#  include "qglshadercache_meego_p.h"
+#else
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(OpenGL)
+
+class QGLShaderProgram;
+class QGLContext;
+
+class CachedShader
+{
+public:
+    inline CachedShader(const QByteArray &, const QByteArray &)
+    {}
+
+    inline bool isCached()
+    {
+        return false;
+    }
+
+    inline bool load(QGLShaderProgram *, const QGLContext *)
+    {
+        return false;
+    }
+
+    inline bool store(QGLShaderProgram *, const QGLContext *)
+    {
+        return false;
+    }
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif
+#endif
diff --git a/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp b/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
new file mode 100644
index 0000000000..18c684ff1b
--- /dev/null
+++ b/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
@@ -0,0 +1,2458 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*
+    When the active program changes, we need to update it's uniforms.
+    We could track state for each program and only update stale uniforms
+        - Could lead to lots of overhead if there's a lot of programs
+    We could update all the uniforms when the program changes
+        - Could end up updating lots of uniforms which don't need updating
+
+    Updating uniforms should be cheap, so the overhead of updating up-to-date
+    uniforms should be minimal. It's also less complex.
+
+    Things which _may_ cause a different program to be used:
+        - Change in brush/pen style
+        - Change in painter opacity
+        - Change in composition mode
+
+    Whenever we set a mode on the shader manager - it needs to tell us if it had
+    to switch to a different program.
+
+    The shader manager should only switch when we tell it to. E.g. if we set a new
+    brush style and then switch to transparent painter, we only want it to compile
+    and use the correct program when we really need it.
+*/
+
+// #define QT_OPENGL_CACHE_AS_VBOS
+
+#include "qglgradientcache_p.h"
+#include "qpaintengineex_opengl2_p.h"
+
+#include <string.h> //for memcpy
+#include <qmath.h>
+
+#include <private/qgl_p.h>
+#include <private/qmath_p.h>
+#include <private/qpaintengineex_p.h>
+#include <QPaintEngine>
+#include <private/qpainter_p.h>
+#include <private/qfontengine_p.h>
+#include <private/qpixmapdata_gl_p.h>
+#include <private/qdatabuffer_p.h>
+#include <private/qstatictext_p.h>
+#include <private/qtriangulator_p.h>
+
+#include "qglengineshadermanager_p.h"
+#include "qgl2pexvertexarray_p.h"
+#include "qtriangulatingstroker_p.h"
+#include "qtextureglyphcache_gl_p.h"
+
+#include <QDebug>
+
+QT_BEGIN_NAMESPACE
+
+#if defined(Q_WS_WIN)
+extern Q_GUI_EXPORT bool qt_cleartype_enabled;
+#endif
+
+#ifdef Q_WS_MAC
+extern bool qt_applefontsmoothing_enabled;
+#endif
+
+#if !defined(QT_MAX_CACHED_GLYPH_SIZE)
+#  define QT_MAX_CACHED_GLYPH_SIZE 64
+#endif
+
+Q_GUI_EXPORT QImage qt_imageForBrush(int brushStyle, bool invert);
+
+////////////////////////////////// Private Methods //////////////////////////////////////////
+
+QGL2PaintEngineExPrivate::~QGL2PaintEngineExPrivate()
+{
+    delete shaderManager;
+
+    while (pathCaches.size()) {
+        QVectorPath::CacheEntry *e = *(pathCaches.constBegin());
+        e->cleanup(e->engine, e->data);
+        e->data = 0;
+        e->engine = 0;
+    }
+
+    if (elementIndicesVBOId != 0) {
+        glDeleteBuffers(1, &elementIndicesVBOId);
+        elementIndicesVBOId = 0;
+    }
+}
+
+void QGL2PaintEngineExPrivate::updateTextureFilter(GLenum target, GLenum wrapMode, bool smoothPixmapTransform, GLuint id)
+{
+//    glActiveTexture(GL_TEXTURE0 + QT_BRUSH_TEXTURE_UNIT); //### Is it always this texture unit?
+    if (id != GLuint(-1) && id == lastTextureUsed)
+        return;
+
+    lastTextureUsed = id;
+
+    if (smoothPixmapTransform) {
+        glTexParameterf(target, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+        glTexParameterf(target, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+    } else {
+        glTexParameterf(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+        glTexParameterf(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+    }
+    glTexParameterf(target, GL_TEXTURE_WRAP_S, wrapMode);
+    glTexParameterf(target, GL_TEXTURE_WRAP_T, wrapMode);
+}
+
+
+inline QColor qt_premultiplyColor(QColor c, GLfloat opacity)
+{
+    qreal alpha = c.alphaF() * opacity;
+    c.setAlphaF(alpha);
+    c.setRedF(c.redF() * alpha);
+    c.setGreenF(c.greenF() * alpha);
+    c.setBlueF(c.blueF() * alpha);
+    return c;
+}
+
+
+void QGL2PaintEngineExPrivate::setBrush(const QBrush& brush)
+{
+    if (qbrush_fast_equals(currentBrush, brush))
+        return;
+
+    const Qt::BrushStyle newStyle = qbrush_style(brush);
+    Q_ASSERT(newStyle != Qt::NoBrush);
+
+    currentBrush = brush;
+    if (!currentBrushPixmap.isNull())
+        currentBrushPixmap = QPixmap();
+    brushUniformsDirty = true; // All brushes have at least one uniform
+
+    if (newStyle > Qt::SolidPattern)
+        brushTextureDirty = true;
+
+    if (currentBrush.style() == Qt::TexturePattern
+        && qHasPixmapTexture(brush) && brush.texture().isQBitmap())
+    {
+        shaderManager->setSrcPixelType(QGLEngineShaderManager::TextureSrcWithPattern);
+    } else {
+        shaderManager->setSrcPixelType(newStyle);
+    }
+    shaderManager->optimiseForBrushTransform(currentBrush.transform().type());
+}
+
+
+void QGL2PaintEngineExPrivate::useSimpleShader()
+{
+    shaderManager->useSimpleProgram();
+
+    if (matrixDirty)
+        updateMatrix();
+}
+
+void QGL2PaintEngineExPrivate::updateBrushTexture()
+{
+    Q_Q(QGL2PaintEngineEx);
+//     qDebug("QGL2PaintEngineExPrivate::updateBrushTexture()");
+    Qt::BrushStyle style = currentBrush.style();
+
+    if ( (style >= Qt::Dense1Pattern) && (style <= Qt::DiagCrossPattern) ) {
+        // Get the image data for the pattern
+        QImage texImage = qt_imageForBrush(style, false);
+
+        glActiveTexture(GL_TEXTURE0 + QT_BRUSH_TEXTURE_UNIT);
+        ctx->d_func()->bindTexture(texImage, GL_TEXTURE_2D, GL_RGBA, QGLContext::InternalBindOption);
+        updateTextureFilter(GL_TEXTURE_2D, GL_REPEAT, q->state()->renderHints & QPainter::SmoothPixmapTransform);
+    }
+    else if (style >= Qt::LinearGradientPattern && style <= Qt::ConicalGradientPattern) {
+        // Gradiant brush: All the gradiants use the same texture
+
+        const QGradient* g = currentBrush.gradient();
+
+        // We apply global opacity in the fragment shaders, so we always pass 1.0
+        // for opacity to the cache.
+        GLuint texId = QGL2GradientCache::cacheForContext(ctx)->getBuffer(*g, 1.0);
+
+        glActiveTexture(GL_TEXTURE0 + QT_BRUSH_TEXTURE_UNIT);
+        glBindTexture(GL_TEXTURE_2D, texId);
+
+        if (g->spread() == QGradient::RepeatSpread || g->type() == QGradient::ConicalGradient)
+            updateTextureFilter(GL_TEXTURE_2D, GL_REPEAT, q->state()->renderHints & QPainter::SmoothPixmapTransform);
+        else if (g->spread() == QGradient::ReflectSpread)
+            updateTextureFilter(GL_TEXTURE_2D, GL_MIRRORED_REPEAT_IBM, q->state()->renderHints & QPainter::SmoothPixmapTransform);
+        else
+            updateTextureFilter(GL_TEXTURE_2D, GL_CLAMP_TO_EDGE, q->state()->renderHints & QPainter::SmoothPixmapTransform);
+    }
+    else if (style == Qt::TexturePattern) {
+        currentBrushPixmap = currentBrush.texture();
+
+        int max_texture_size = ctx->d_func()->maxTextureSize();
+        if (currentBrushPixmap.width() > max_texture_size || currentBrushPixmap.height() > max_texture_size)
+            currentBrushPixmap = currentBrushPixmap.scaled(max_texture_size, max_texture_size, Qt::KeepAspectRatio);
+
+        glActiveTexture(GL_TEXTURE0 + QT_BRUSH_TEXTURE_UNIT);
+        QGLTexture *tex = ctx->d_func()->bindTexture(currentBrushPixmap, GL_TEXTURE_2D, GL_RGBA,
+                                                     QGLContext::InternalBindOption |
+                                                     QGLContext::CanFlipNativePixmapBindOption);
+        updateTextureFilter(GL_TEXTURE_2D, GL_REPEAT, q->state()->renderHints & QPainter::SmoothPixmapTransform);
+        textureInvertedY = tex->options & QGLContext::InvertedYBindOption ? -1 : 1;
+    }
+    brushTextureDirty = false;
+}
+
+
+void QGL2PaintEngineExPrivate::updateBrushUniforms()
+{
+//     qDebug("QGL2PaintEngineExPrivate::updateBrushUniforms()");
+    Qt::BrushStyle style = currentBrush.style();
+
+    if (style == Qt::NoBrush)
+        return;
+
+    QTransform brushQTransform = currentBrush.transform();
+
+    if (style == Qt::SolidPattern) {
+        QColor col = qt_premultiplyColor(currentBrush.color(), (GLfloat)q->state()->opacity);
+        shaderManager->currentProgram()->setUniformValue(location(QGLEngineShaderManager::FragmentColor), col);
+    }
+    else {
+        // All other brushes have a transform and thus need the translation point:
+        QPointF translationPoint;
+
+        if (style <= Qt::DiagCrossPattern) {
+            QColor col = qt_premultiplyColor(currentBrush.color(), (GLfloat)q->state()->opacity);
+
+            shaderManager->currentProgram()->setUniformValue(location(QGLEngineShaderManager::PatternColor), col);
+
+            QVector2D halfViewportSize(width*0.5, height*0.5);
+            shaderManager->currentProgram()->setUniformValue(location(QGLEngineShaderManager::HalfViewportSize), halfViewportSize);
+        }
+        else if (style == Qt::LinearGradientPattern) {
+            const QLinearGradient *g = static_cast<const QLinearGradient *>(currentBrush.gradient());
+
+            QPointF realStart = g->start();
+            QPointF realFinal = g->finalStop();
+            translationPoint = realStart;
+
+            QPointF l = realFinal - realStart;
+
+            QVector3D linearData(
+                l.x(),
+                l.y(),
+                1.0f / (l.x() * l.x() + l.y() * l.y())
+            );
+
+            shaderManager->currentProgram()->setUniformValue(location(QGLEngineShaderManager::LinearData), linearData);
+
+            QVector2D halfViewportSize(width*0.5, height*0.5);
+            shaderManager->currentProgram()->setUniformValue(location(QGLEngineShaderManager::HalfViewportSize), halfViewportSize);
+        }
+        else if (style == Qt::ConicalGradientPattern) {
+            const QConicalGradient *g = static_cast<const QConicalGradient *>(currentBrush.gradient());
+            translationPoint   = g->center();
+
+            GLfloat angle = -(g->angle() * 2 * Q_PI) / 360.0;
+
+            shaderManager->currentProgram()->setUniformValue(location(QGLEngineShaderManager::Angle), angle);
+
+            QVector2D halfViewportSize(width*0.5, height*0.5);
+            shaderManager->currentProgram()->setUniformValue(location(QGLEngineShaderManager::HalfViewportSize), halfViewportSize);
+        }
+        else if (style == Qt::RadialGradientPattern) {
+            const QRadialGradient *g = static_cast<const QRadialGradient *>(currentBrush.gradient());
+            QPointF realCenter = g->center();
+            QPointF realFocal  = g->focalPoint();
+            qreal   realRadius = g->radius();
+            translationPoint   = realFocal;
+
+            QPointF fmp = realCenter - realFocal;
+            shaderManager->currentProgram()->setUniformValue(location(QGLEngineShaderManager::Fmp), fmp);
+
+            GLfloat fmp2_m_radius2 = -fmp.x() * fmp.x() - fmp.y() * fmp.y() + realRadius*realRadius;
+            shaderManager->currentProgram()->setUniformValue(location(QGLEngineShaderManager::Fmp2MRadius2), fmp2_m_radius2);
+            shaderManager->currentProgram()->setUniformValue(location(QGLEngineShaderManager::Inverse2Fmp2MRadius2),
+                                                             GLfloat(1.0 / (2.0*fmp2_m_radius2)));
+
+            QVector2D halfViewportSize(width*0.5, height*0.5);
+            shaderManager->currentProgram()->setUniformValue(location(QGLEngineShaderManager::HalfViewportSize), halfViewportSize);
+        }
+        else if (style == Qt::TexturePattern) {
+            const QPixmap& texPixmap = currentBrush.texture();
+
+            if (qHasPixmapTexture(currentBrush) && currentBrush.texture().isQBitmap()) {
+                QColor col = qt_premultiplyColor(currentBrush.color(), (GLfloat)q->state()->opacity);
+                shaderManager->currentProgram()->setUniformValue(location(QGLEngineShaderManager::PatternColor), col);
+            }
+
+            QSizeF invertedTextureSize(1.0 / texPixmap.width(), 1.0 / texPixmap.height());
+            shaderManager->currentProgram()->setUniformValue(location(QGLEngineShaderManager::InvertedTextureSize), invertedTextureSize);
+
+            QVector2D halfViewportSize(width*0.5, height*0.5);
+            shaderManager->currentProgram()->setUniformValue(location(QGLEngineShaderManager::HalfViewportSize), halfViewportSize);
+        }
+        else
+            qWarning("QGL2PaintEngineEx: Unimplemented fill style");
+
+        const QPointF &brushOrigin = q->state()->brushOrigin;
+        QTransform matrix = q->state()->matrix;
+        matrix.translate(brushOrigin.x(), brushOrigin.y());
+
+        QTransform translate(1, 0, 0, 1, -translationPoint.x(), -translationPoint.y());
+        qreal m22 = -1;
+        qreal dy = height;
+        if (device->isFlipped()) {
+            m22 = 1;
+            dy = 0;
+        }
+        QTransform gl_to_qt(1, 0, 0, m22, 0, dy);
+        QTransform inv_matrix;
+        if (style == Qt::TexturePattern && textureInvertedY == -1)
+            inv_matrix = gl_to_qt * (QTransform(1, 0, 0, -1, 0, currentBrush.texture().height()) * brushQTransform * matrix).inverted() * translate;
+        else
+            inv_matrix = gl_to_qt * (brushQTransform * matrix).inverted() * translate;
+
+        shaderManager->currentProgram()->setUniformValue(location(QGLEngineShaderManager::BrushTransform), inv_matrix);
+        shaderManager->currentProgram()->setUniformValue(location(QGLEngineShaderManager::BrushTexture), QT_BRUSH_TEXTURE_UNIT);
+    }
+    brushUniformsDirty = false;
+}
+
+
+// This assumes the shader manager has already setup the correct shader program
+void QGL2PaintEngineExPrivate::updateMatrix()
+{
+//     qDebug("QGL2PaintEngineExPrivate::updateMatrix()");
+
+    const QTransform& transform = q->state()->matrix;
+
+    // The projection matrix converts from Qt's coordinate system to GL's coordinate system
+    //    * GL's viewport is 2x2, Qt's is width x height
+    //    * GL has +y -> -y going from bottom -> top, Qt is the other way round
+    //    * GL has [0,0] in the center, Qt has it in the top-left
+    //
+    // This results in the Projection matrix below, which is multiplied by the painter's
+    // transformation matrix, as shown below:
+    //
+    //                Projection Matrix                      Painter Transform
+    // ------------------------------------------------   ------------------------
+    // | 2.0 / width  |      0.0      |     -1.0      |   |  m11  |  m21  |  dx  |
+    // |     0.0      | -2.0 / height |      1.0      | * |  m12  |  m22  |  dy  |
+    // |     0.0      |      0.0      |      1.0      |   |  m13  |  m23  |  m33 |
+    // ------------------------------------------------   ------------------------
+    //
+    // NOTE: The resultant matrix is also transposed, as GL expects column-major matracies
+
+    const GLfloat wfactor = 2.0f / width;
+    GLfloat hfactor = -2.0f / height;
+
+    GLfloat dx = transform.dx();
+    GLfloat dy = transform.dy();
+
+    if (device->isFlipped()) {
+        hfactor *= -1;
+        dy -= height;
+    }
+
+    // Non-integer translates can have strange effects for some rendering operations such as
+    // anti-aliased text rendering. In such cases, we snap the translate to the pixel grid.
+    if (snapToPixelGrid && transform.type() == QTransform::TxTranslate) {
+        // 0.50 needs to rounded down to 0.0 for consistency with raster engine:
+        dx = ceilf(dx - 0.5f);
+        dy = ceilf(dy - 0.5f);
+    }
+    pmvMatrix[0][0] = (wfactor * transform.m11())  - transform.m13();
+    pmvMatrix[1][0] = (wfactor * transform.m21())  - transform.m23();
+    pmvMatrix[2][0] = (wfactor * dx) - transform.m33();
+    pmvMatrix[0][1] = (hfactor * transform.m12())  + transform.m13();
+    pmvMatrix[1][1] = (hfactor * transform.m22())  + transform.m23();
+    pmvMatrix[2][1] = (hfactor * dy) + transform.m33();
+    pmvMatrix[0][2] = transform.m13();
+    pmvMatrix[1][2] = transform.m23();
+    pmvMatrix[2][2] = transform.m33();
+
+    // 1/10000 == 0.0001, so we have good enough res to cover curves
+    // that span the entire widget...
+    inverseScale = qMax(1 / qMax( qMax(qAbs(transform.m11()), qAbs(transform.m22())),
+                                  qMax(qAbs(transform.m12()), qAbs(transform.m21())) ),
+                        qreal(0.0001));
+
+    matrixDirty = false;
+    matrixUniformDirty = true;
+
+    // Set the PMV matrix attribute. As we use an attributes rather than uniforms, we only
+    // need to do this once for every matrix change and persists across all shader programs.
+    glVertexAttrib3fv(QT_PMV_MATRIX_1_ATTR, pmvMatrix[0]);
+    glVertexAttrib3fv(QT_PMV_MATRIX_2_ATTR, pmvMatrix[1]);
+    glVertexAttrib3fv(QT_PMV_MATRIX_3_ATTR, pmvMatrix[2]);
+
+    dasher.setInvScale(inverseScale);
+    stroker.setInvScale(inverseScale);
+}
+
+
+void QGL2PaintEngineExPrivate::updateCompositionMode()
+{
+    // NOTE: The entire paint engine works on pre-multiplied data - which is why some of these
+    //       composition modes look odd.
+//     qDebug() << "QGL2PaintEngineExPrivate::updateCompositionMode() - Setting GL composition mode for " << q->state()->composition_mode;
+    switch(q->state()->composition_mode) {
+    case QPainter::CompositionMode_SourceOver:
+        glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
+        break;
+    case QPainter::CompositionMode_DestinationOver:
+        glBlendFunc(GL_ONE_MINUS_DST_ALPHA, GL_ONE);
+        break;
+    case QPainter::CompositionMode_Clear:
+        glBlendFunc(GL_ZERO, GL_ZERO);
+        break;
+    case QPainter::CompositionMode_Source:
+        glBlendFunc(GL_ONE, GL_ZERO);
+        break;
+    case QPainter::CompositionMode_Destination:
+        glBlendFunc(GL_ZERO, GL_ONE);
+        break;
+    case QPainter::CompositionMode_SourceIn:
+        glBlendFunc(GL_DST_ALPHA, GL_ZERO);
+        break;
+    case QPainter::CompositionMode_DestinationIn:
+        glBlendFunc(GL_ZERO, GL_SRC_ALPHA);
+        break;
+    case QPainter::CompositionMode_SourceOut:
+        glBlendFunc(GL_ONE_MINUS_DST_ALPHA, GL_ZERO);
+        break;
+    case QPainter::CompositionMode_DestinationOut:
+        glBlendFunc(GL_ZERO, GL_ONE_MINUS_SRC_ALPHA);
+        break;
+    case QPainter::CompositionMode_SourceAtop:
+        glBlendFunc(GL_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+        break;
+    case QPainter::CompositionMode_DestinationAtop:
+        glBlendFunc(GL_ONE_MINUS_DST_ALPHA, GL_SRC_ALPHA);
+        break;
+    case QPainter::CompositionMode_Xor:
+        glBlendFunc(GL_ONE_MINUS_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+        break;
+    case QPainter::CompositionMode_Plus:
+        glBlendFunc(GL_ONE, GL_ONE);
+        break;
+    default:
+        qWarning("Unsupported composition mode");
+        break;
+    }
+
+    compositionModeDirty = false;
+}
+
+static inline void setCoords(GLfloat *coords, const QGLRect &rect)
+{
+    coords[0] = rect.left;
+    coords[1] = rect.top;
+    coords[2] = rect.right;
+    coords[3] = rect.top;
+    coords[4] = rect.right;
+    coords[5] = rect.bottom;
+    coords[6] = rect.left;
+    coords[7] = rect.bottom;
+}
+
+void QGL2PaintEngineExPrivate::drawTexture(const QGLRect& dest, const QGLRect& src, const QSize &textureSize, bool opaque, bool pattern)
+{
+    // Setup for texture drawing
+    currentBrush = noBrush;
+    shaderManager->setSrcPixelType(pattern ? QGLEngineShaderManager::PatternSrc : QGLEngineShaderManager::ImageSrc);
+
+    if (snapToPixelGrid) {
+        snapToPixelGrid = false;
+        matrixDirty = true;
+    }
+
+    if (prepareForDraw(opaque))
+        shaderManager->currentProgram()->setUniformValue(location(QGLEngineShaderManager::ImageTexture), QT_IMAGE_TEXTURE_UNIT);
+
+    if (pattern) {
+        QColor col = qt_premultiplyColor(q->state()->pen.color(), (GLfloat)q->state()->opacity);
+        shaderManager->currentProgram()->setUniformValue(location(QGLEngineShaderManager::PatternColor), col);
+    }
+
+    GLfloat dx = 1.0 / textureSize.width();
+    GLfloat dy = 1.0 / textureSize.height();
+
+    QGLRect srcTextureRect(src.left*dx, src.top*dy, src.right*dx, src.bottom*dy);
+
+    setCoords(staticVertexCoordinateArray, dest);
+    setCoords(staticTextureCoordinateArray, srcTextureRect);
+
+    glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
+}
+
+void QGL2PaintEngineEx::beginNativePainting()
+{
+    Q_D(QGL2PaintEngineEx);
+    ensureActive();
+    d->transferMode(BrushDrawingMode);
+
+    d->nativePaintingActive = true;
+
+    QGLContext *ctx = d->ctx;
+    glUseProgram(0);
+
+    // Disable all the vertex attribute arrays:
+    for (int i = 0; i < QT_GL_VERTEX_ARRAY_TRACKED_COUNT; ++i)
+        glDisableVertexAttribArray(i);
+
+#ifndef QT_OPENGL_ES_2
+    const QGLFormat &fmt = d->device->format();
+    if (fmt.majorVersion() < 3 || (fmt.majorVersion() == 3 && fmt.minorVersion() < 1)
+        || fmt.profile() == QGLFormat::CompatibilityProfile)
+    {
+        // be nice to people who mix OpenGL 1.x code with QPainter commands
+        // by setting modelview and projection matrices to mirror the GL 1
+        // paint engine
+        const QTransform& mtx = state()->matrix;
+
+        float mv_matrix[4][4] =
+        {
+            { float(mtx.m11()), float(mtx.m12()),     0, float(mtx.m13()) },
+            { float(mtx.m21()), float(mtx.m22()),     0, float(mtx.m23()) },
+            {                0,                0,     1,                0 },
+            {  float(mtx.dx()),  float(mtx.dy()),     0, float(mtx.m33()) }
+        };
+
+        const QSize sz = d->device->size();
+
+        glMatrixMode(GL_PROJECTION);
+        glLoadIdentity();
+        glOrtho(0, sz.width(), sz.height(), 0, -999999, 999999);
+
+        glMatrixMode(GL_MODELVIEW);
+        glLoadMatrixf(&mv_matrix[0][0]);
+    }
+#else
+    Q_UNUSED(ctx);
+#endif
+
+    d->lastTextureUsed = GLuint(-1);
+    d->dirtyStencilRegion = QRect(0, 0, d->width, d->height);
+    d->resetGLState();
+
+    d->shaderManager->setDirty();
+
+    d->needsSync = true;
+}
+
+void QGL2PaintEngineExPrivate::resetGLState()
+{
+    glDisable(GL_BLEND);
+    glActiveTexture(GL_TEXTURE0);
+    glDisable(GL_STENCIL_TEST);
+    glDisable(GL_DEPTH_TEST);
+    glDisable(GL_SCISSOR_TEST);
+    glDepthMask(true);
+    glDepthFunc(GL_LESS);
+    glClearDepth(1);
+    glStencilMask(0xff);
+    glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
+    glStencilFunc(GL_ALWAYS, 0, 0xff);
+    ctx->d_func()->setVertexAttribArrayEnabled(QT_TEXTURE_COORDS_ATTR, false);
+    ctx->d_func()->setVertexAttribArrayEnabled(QT_VERTEX_COORDS_ATTR, false);
+    ctx->d_func()->setVertexAttribArrayEnabled(QT_OPACITY_ATTR, false);
+#ifndef QT_OPENGL_ES_2
+    // gl_Color, corresponding to vertex attribute 3, may have been changed
+    float color[] = { 1.0f, 1.0f, 1.0f, 1.0f };
+    glVertexAttrib4fv(3, color);
+#endif
+}
+
+void QGL2PaintEngineEx::endNativePainting()
+{
+    Q_D(QGL2PaintEngineEx);
+    d->needsSync = true;
+    d->nativePaintingActive = false;
+}
+
+void QGL2PaintEngineEx::invalidateState()
+{
+    Q_D(QGL2PaintEngineEx);
+    d->needsSync = true;
+}
+
+bool QGL2PaintEngineEx::isNativePaintingActive() const {
+    Q_D(const QGL2PaintEngineEx);
+    return d->nativePaintingActive;
+}
+
+void QGL2PaintEngineExPrivate::transferMode(EngineMode newMode)
+{
+    if (newMode == mode)
+        return;
+
+    if (mode == TextDrawingMode || mode == ImageDrawingMode || mode == ImageArrayDrawingMode) {
+        lastTextureUsed = GLuint(-1);
+    }
+
+    if (newMode == TextDrawingMode) {
+        shaderManager->setHasComplexGeometry(true);
+    } else {
+        shaderManager->setHasComplexGeometry(false);
+    }
+
+    if (newMode == ImageDrawingMode) {
+        setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, staticVertexCoordinateArray);
+        setVertexAttributePointer(QT_TEXTURE_COORDS_ATTR, staticTextureCoordinateArray);
+    }
+
+    if (newMode == ImageArrayDrawingMode) {
+        setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, (GLfloat*)vertexCoordinateArray.data());
+        setVertexAttributePointer(QT_TEXTURE_COORDS_ATTR, (GLfloat*)textureCoordinateArray.data());
+        setVertexAttributePointer(QT_OPACITY_ATTR, (GLfloat*)opacityArray.data());
+    }
+
+    // This needs to change when we implement high-quality anti-aliasing...
+    if (newMode != TextDrawingMode)
+        shaderManager->setMaskType(QGLEngineShaderManager::NoMask);
+
+    mode = newMode;
+}
+
+struct QGL2PEVectorPathCache
+{
+#ifdef QT_OPENGL_CACHE_AS_VBOS
+    GLuint vbo;
+    GLuint ibo;
+#else
+    float *vertices;
+    void *indices;
+#endif
+    int vertexCount;
+    int indexCount;
+    GLenum primitiveType;
+    qreal iscale;
+};
+
+void QGL2PaintEngineExPrivate::cleanupVectorPath(QPaintEngineEx *engine, void *data)
+{
+    QGL2PEVectorPathCache *c = (QGL2PEVectorPathCache *) data;
+#ifdef QT_OPENGL_CACHE_AS_VBOS
+    Q_ASSERT(engine->type() == QPaintEngine::OpenGL2);
+    static_cast<QGL2PaintEngineEx *>(engine)->d_func()->unusedVBOSToClean << c->vbo;
+    if (c->ibo)
+        d->unusedIBOSToClean << c->ibo;
+#else
+    Q_UNUSED(engine);
+    qFree(c->vertices);
+    qFree(c->indices);
+#endif
+    delete c;
+}
+
+// Assumes everything is configured for the brush you want to use
+void QGL2PaintEngineExPrivate::fill(const QVectorPath& path)
+{
+    transferMode(BrushDrawingMode);
+
+    if (snapToPixelGrid) {
+        snapToPixelGrid = false;
+        matrixDirty = true;
+    }
+
+    // Might need to call updateMatrix to re-calculate inverseScale
+    if (matrixDirty)
+        updateMatrix();
+
+    const QPointF* const points = reinterpret_cast<const QPointF*>(path.points());
+
+    // Check to see if there's any hints
+    if (path.shape() == QVectorPath::RectangleHint) {
+        QGLRect rect(points[0].x(), points[0].y(), points[2].x(), points[2].y());
+        prepareForDraw(currentBrush.isOpaque());
+        composite(rect);
+    } else if (path.isConvex()) {
+
+        if (path.isCacheable()) {
+            QVectorPath::CacheEntry *data = path.lookupCacheData(q);
+            QGL2PEVectorPathCache *cache;
+
+            bool updateCache = false;
+
+            if (data) {
+                cache = (QGL2PEVectorPathCache *) data->data;
+                // Check if scale factor is exceeded for curved paths and generate curves if so...
+                if (path.isCurved()) {
+                    qreal scaleFactor = cache->iscale / inverseScale;
+                    if (scaleFactor < 0.5 || scaleFactor > 2.0) {
+#ifdef QT_OPENGL_CACHE_AS_VBOS
+                        glDeleteBuffers(1, &cache->vbo);
+                        cache->vbo = 0;
+                        Q_ASSERT(cache->ibo == 0);
+#else
+                        qFree(cache->vertices);
+                        Q_ASSERT(cache->indices == 0);
+#endif
+                        updateCache = true;
+                    }
+                }
+            } else {
+                cache = new QGL2PEVectorPathCache;
+                data = const_cast<QVectorPath &>(path).addCacheData(q, cache, cleanupVectorPath);
+                updateCache = true;
+            }
+
+            // Flatten the path at the current scale factor and fill it into the cache struct.
+            if (updateCache) {
+                vertexCoordinateArray.clear();
+                vertexCoordinateArray.addPath(path, inverseScale, false);
+                int vertexCount = vertexCoordinateArray.vertexCount();
+                int floatSizeInBytes = vertexCount * 2 * sizeof(float);
+                cache->vertexCount = vertexCount;
+                cache->indexCount = 0;
+                cache->primitiveType = GL_TRIANGLE_FAN;
+                cache->iscale = inverseScale;
+#ifdef QT_OPENGL_CACHE_AS_VBOS
+                glGenBuffers(1, &cache->vbo);
+                glBindBuffer(GL_ARRAY_BUFFER, cache->vbo);
+                glBufferData(GL_ARRAY_BUFFER, floatSizeInBytes, vertexCoordinateArray.data(), GL_STATIC_DRAW);
+                cache->ibo = 0;
+#else
+                cache->vertices = (float *) qMalloc(floatSizeInBytes);
+                memcpy(cache->vertices, vertexCoordinateArray.data(), floatSizeInBytes);
+                cache->indices = 0;
+#endif
+            }
+
+            prepareForDraw(currentBrush.isOpaque());
+#ifdef QT_OPENGL_CACHE_AS_VBOS
+            glBindBuffer(GL_ARRAY_BUFFER, cache->vbo);
+            setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, 0);
+#else
+            setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, cache->vertices);
+#endif
+            glDrawArrays(cache->primitiveType, 0, cache->vertexCount);
+
+        } else {
+      //        printf(" - Marking path as cachable...\n");
+            // Tag it for later so that if the same path is drawn twice, it is assumed to be static and thus cachable
+            path.makeCacheable();
+            vertexCoordinateArray.clear();
+            vertexCoordinateArray.addPath(path, inverseScale, false);
+            prepareForDraw(currentBrush.isOpaque());
+            drawVertexArrays(vertexCoordinateArray, GL_TRIANGLE_FAN);
+        }
+
+    } else {
+        bool useCache = path.isCacheable();
+        if (useCache) {
+            QRectF bbox = path.controlPointRect();
+            // If the path doesn't fit within these limits, it is possible that the triangulation will fail.
+            useCache &= (bbox.left() > -0x8000 * inverseScale)
+                     && (bbox.right() < 0x8000 * inverseScale)
+                     && (bbox.top() > -0x8000 * inverseScale)
+                     && (bbox.bottom() < 0x8000 * inverseScale);
+        }
+
+        if (useCache) {
+            QVectorPath::CacheEntry *data = path.lookupCacheData(q);
+            QGL2PEVectorPathCache *cache;
+
+            bool updateCache = false;
+
+            if (data) {
+                cache = (QGL2PEVectorPathCache *) data->data;
+                // Check if scale factor is exceeded for curved paths and generate curves if so...
+                if (path.isCurved()) {
+                    qreal scaleFactor = cache->iscale / inverseScale;
+                    if (scaleFactor < 0.5 || scaleFactor > 2.0) {
+#ifdef QT_OPENGL_CACHE_AS_VBOS
+                        glDeleteBuffers(1, &cache->vbo);
+                        glDeleteBuffers(1, &cache->ibo);
+#else
+                        qFree(cache->vertices);
+                        qFree(cache->indices);
+#endif
+                        updateCache = true;
+                    }
+                }
+            } else {
+                cache = new QGL2PEVectorPathCache;
+                data = const_cast<QVectorPath &>(path).addCacheData(q, cache, cleanupVectorPath);
+                updateCache = true;
+            }
+
+            // Flatten the path at the current scale factor and fill it into the cache struct.
+            if (updateCache) {
+                QTriangleSet polys = qTriangulate(path, QTransform().scale(1 / inverseScale, 1 / inverseScale));
+                cache->vertexCount = polys.vertices.size() / 2;
+                cache->indexCount = polys.indices.size();
+                cache->primitiveType = GL_TRIANGLES;
+                cache->iscale = inverseScale;
+#ifdef QT_OPENGL_CACHE_AS_VBOS
+                glGenBuffers(1, &cache->vbo);
+                glGenBuffers(1, &cache->ibo);
+                glBindBuffer(GL_ARRAY_BUFFER, cache->vbo);
+                glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, cache->ibo);
+
+                if (QGLExtensions::glExtensions() & QGLExtensions::ElementIndexUint)
+                    glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(quint32) * polys.indices.size(), polys.indices.data(), GL_STATIC_DRAW);
+                else
+                    glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(quint16) * polys.indices.size(), polys.indices.data(), GL_STATIC_DRAW);
+
+                QVarLengthArray<float> vertices(polys.vertices.size());
+                for (int i = 0; i < polys.vertices.size(); ++i)
+                    vertices[i] = float(inverseScale * polys.vertices.at(i));
+                glBufferData(GL_ARRAY_BUFFER, sizeof(float) * vertices.size(), vertices.data(), GL_STATIC_DRAW);
+#else
+                cache->vertices = (float *) qMalloc(sizeof(float) * polys.vertices.size());
+                if (QGLExtensions::glExtensions() & QGLExtensions::ElementIndexUint) {
+                    cache->indices = (quint32 *) qMalloc(sizeof(quint32) * polys.indices.size());
+                    memcpy(cache->indices, polys.indices.data(), sizeof(quint32) * polys.indices.size());
+                } else {
+                    cache->indices = (quint16 *) qMalloc(sizeof(quint16) * polys.indices.size());
+                    memcpy(cache->indices, polys.indices.data(), sizeof(quint16) * polys.indices.size());
+                }
+                for (int i = 0; i < polys.vertices.size(); ++i)
+                    cache->vertices[i] = float(inverseScale * polys.vertices.at(i));
+#endif
+            }
+
+            prepareForDraw(currentBrush.isOpaque());
+#ifdef QT_OPENGL_CACHE_AS_VBOS
+            glBindBuffer(GL_ARRAY_BUFFER, cache->vbo);
+            glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, cache->ibo);
+            setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, 0);
+            if (QGLExtensions::glExtensions() & QGLExtensions::ElementIndexUint)
+                glDrawElements(cache->primitiveType, cache->indexCount, GL_UNSIGNED_INT, 0);
+            else
+                glDrawElements(cache->primitiveType, cache->indexCount, GL_UNSIGNED_SHORT, 0);
+            glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
+            glBindBuffer(GL_ARRAY_BUFFER, 0);
+#else
+            setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, cache->vertices);
+            if (QGLExtensions::glExtensions() & QGLExtensions::ElementIndexUint)
+                glDrawElements(cache->primitiveType, cache->indexCount, GL_UNSIGNED_INT, (qint32 *)cache->indices);
+            else
+                glDrawElements(cache->primitiveType, cache->indexCount, GL_UNSIGNED_SHORT, (qint16 *)cache->indices);
+#endif
+
+        } else {
+      //        printf(" - Marking path as cachable...\n");
+            // Tag it for later so that if the same path is drawn twice, it is assumed to be static and thus cachable
+            path.makeCacheable();
+
+            if (!device->format().stencil()) {
+                // If there is no stencil buffer, triangulate the path instead.
+
+                QRectF bbox = path.controlPointRect();
+                // If the path doesn't fit within these limits, it is possible that the triangulation will fail.
+                bool withinLimits = (bbox.left() > -0x8000 * inverseScale)
+                                  && (bbox.right() < 0x8000 * inverseScale)
+                                  && (bbox.top() > -0x8000 * inverseScale)
+                                  && (bbox.bottom() < 0x8000 * inverseScale);
+                if (withinLimits) {
+                    QTriangleSet polys = qTriangulate(path, QTransform().scale(1 / inverseScale, 1 / inverseScale));
+
+                    QVarLengthArray<float> vertices(polys.vertices.size());
+                    for (int i = 0; i < polys.vertices.size(); ++i)
+                        vertices[i] = float(inverseScale * polys.vertices.at(i));
+
+                    prepareForDraw(currentBrush.isOpaque());
+                    setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, vertices.constData());
+                    if (QGLExtensions::glExtensions() & QGLExtensions::ElementIndexUint)
+                        glDrawElements(GL_TRIANGLES, polys.indices.size(), GL_UNSIGNED_INT, polys.indices.data());
+                    else
+                        glDrawElements(GL_TRIANGLES, polys.indices.size(), GL_UNSIGNED_SHORT, polys.indices.data());
+                } else {
+                    // We can't handle big, concave painter paths with OpenGL without stencil buffer.
+                    qWarning("Painter path exceeds +/-32767 pixels.");
+                }
+                return;
+            }
+
+            // The path is too complicated & needs the stencil technique
+            vertexCoordinateArray.clear();
+            vertexCoordinateArray.addPath(path, inverseScale, false);
+
+            fillStencilWithVertexArray(vertexCoordinateArray, path.hasWindingFill());
+
+            glStencilMask(0xff);
+            glStencilOp(GL_KEEP, GL_REPLACE, GL_REPLACE);
+
+            if (q->state()->clipTestEnabled) {
+                // Pass when high bit is set, replace stencil value with current clip
+                glStencilFunc(GL_NOTEQUAL, q->state()->currentClip, GL_STENCIL_HIGH_BIT);
+            } else if (path.hasWindingFill()) {
+                // Pass when any bit is set, replace stencil value with 0
+                glStencilFunc(GL_NOTEQUAL, 0, 0xff);
+            } else {
+                // Pass when high bit is set, replace stencil value with 0
+                glStencilFunc(GL_NOTEQUAL, 0, GL_STENCIL_HIGH_BIT);
+            }
+            prepareForDraw(currentBrush.isOpaque());
+
+            // Stencil the brush onto the dest buffer
+            composite(vertexCoordinateArray.boundingRect());
+            glStencilMask(0);
+            updateClipScissorTest();
+        }
+    }
+}
+
+
+void QGL2PaintEngineExPrivate::fillStencilWithVertexArray(const float *data,
+                                                          int count,
+                                                          int *stops,
+                                                          int stopCount,
+                                                          const QGLRect &bounds,
+                                                          StencilFillMode mode)
+{
+    Q_ASSERT(count || stops);
+
+//     qDebug("QGL2PaintEngineExPrivate::fillStencilWithVertexArray()");
+    glStencilMask(0xff); // Enable stencil writes
+
+    if (dirtyStencilRegion.intersects(currentScissorBounds)) {
+        QVector<QRect> clearRegion = dirtyStencilRegion.intersected(currentScissorBounds).rects();
+        glClearStencil(0); // Clear to zero
+        for (int i = 0; i < clearRegion.size(); ++i) {
+#ifndef QT_GL_NO_SCISSOR_TEST
+            setScissor(clearRegion.at(i));
+#endif
+            glClear(GL_STENCIL_BUFFER_BIT);
+        }
+
+        dirtyStencilRegion -= currentScissorBounds;
+
+#ifndef QT_GL_NO_SCISSOR_TEST
+        updateClipScissorTest();
+#endif
+    }
+
+    glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE); // Disable color writes
+    useSimpleShader();
+    glEnable(GL_STENCIL_TEST); // For some reason, this has to happen _after_ the simple shader is use()'d
+
+    if (mode == WindingFillMode) {
+        Q_ASSERT(stops && !count);
+        if (q->state()->clipTestEnabled) {
+            // Flatten clip values higher than current clip, and set high bit to match current clip
+            glStencilFunc(GL_LEQUAL, GL_STENCIL_HIGH_BIT | q->state()->currentClip, ~GL_STENCIL_HIGH_BIT);
+            glStencilOp(GL_KEEP, GL_REPLACE, GL_REPLACE);
+            composite(bounds);
+
+            glStencilFunc(GL_EQUAL, GL_STENCIL_HIGH_BIT, GL_STENCIL_HIGH_BIT);
+        } else if (!stencilClean) {
+            // Clear stencil buffer within bounding rect
+            glStencilFunc(GL_ALWAYS, 0, 0xff);
+            glStencilOp(GL_ZERO, GL_ZERO, GL_ZERO);
+            composite(bounds);
+        }
+
+        // Inc. for front-facing triangle
+        glStencilOpSeparate(GL_FRONT, GL_KEEP, GL_INCR_WRAP, GL_INCR_WRAP);
+        // Dec. for back-facing "holes"
+        glStencilOpSeparate(GL_BACK, GL_KEEP, GL_DECR_WRAP, GL_DECR_WRAP);
+        glStencilMask(~GL_STENCIL_HIGH_BIT);
+        drawVertexArrays(data, stops, stopCount, GL_TRIANGLE_FAN);
+
+        if (q->state()->clipTestEnabled) {
+            // Clear high bit of stencil outside of path
+            glStencilFunc(GL_EQUAL, q->state()->currentClip, ~GL_STENCIL_HIGH_BIT);
+            glStencilOp(GL_KEEP, GL_REPLACE, GL_REPLACE);
+            glStencilMask(GL_STENCIL_HIGH_BIT);
+            composite(bounds);
+        }
+    } else if (mode == OddEvenFillMode) {
+        glStencilMask(GL_STENCIL_HIGH_BIT);
+        glStencilOp(GL_KEEP, GL_KEEP, GL_INVERT); // Simply invert the stencil bit
+        drawVertexArrays(data, stops, stopCount, GL_TRIANGLE_FAN);
+
+    } else { // TriStripStrokeFillMode
+        Q_ASSERT(count && !stops); // tristrips generated directly, so no vertexArray or stops
+        glStencilMask(GL_STENCIL_HIGH_BIT);
+#if 0
+        glStencilOp(GL_KEEP, GL_KEEP, GL_INVERT); // Simply invert the stencil bit
+        setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, data);
+        glDrawArrays(GL_TRIANGLE_STRIP, 0, count);
+#else
+
+        glStencilOp(GL_KEEP, GL_KEEP, GL_REPLACE);
+        if (q->state()->clipTestEnabled) {
+            glStencilFunc(GL_LEQUAL, q->state()->currentClip | GL_STENCIL_HIGH_BIT,
+                          ~GL_STENCIL_HIGH_BIT);
+        } else {
+            glStencilFunc(GL_ALWAYS, GL_STENCIL_HIGH_BIT, 0xff);
+        }
+        setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, data);
+        glDrawArrays(GL_TRIANGLE_STRIP, 0, count);
+#endif
+    }
+
+    // Enable color writes & disable stencil writes
+    glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
+}
+
+/*
+    If the maximum value in the stencil buffer is GL_STENCIL_HIGH_BIT - 1,
+    restore the stencil buffer to a pristine state.  The current clip region
+    is set to 1, and the rest to 0.
+*/
+void QGL2PaintEngineExPrivate::resetClipIfNeeded()
+{
+    if (maxClip != (GL_STENCIL_HIGH_BIT - 1))
+        return;
+
+    Q_Q(QGL2PaintEngineEx);
+
+    useSimpleShader();
+    glEnable(GL_STENCIL_TEST);
+    glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
+
+    QRectF bounds = q->state()->matrix.inverted().mapRect(QRectF(0, 0, width, height));
+    QGLRect rect(bounds.left(), bounds.top(), bounds.right(), bounds.bottom());
+
+    // Set high bit on clip region
+    glStencilFunc(GL_LEQUAL, q->state()->currentClip, 0xff);
+    glStencilOp(GL_KEEP, GL_INVERT, GL_INVERT);
+    glStencilMask(GL_STENCIL_HIGH_BIT);
+    composite(rect);
+
+    // Reset clipping to 1 and everything else to zero
+    glStencilFunc(GL_NOTEQUAL, 0x01, GL_STENCIL_HIGH_BIT);
+    glStencilOp(GL_ZERO, GL_REPLACE, GL_REPLACE);
+    glStencilMask(0xff);
+    composite(rect);
+
+    q->state()->currentClip = 1;
+    q->state()->canRestoreClip = false;
+
+    maxClip = 1;
+
+    glStencilMask(0x0);
+    glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
+}
+
+bool QGL2PaintEngineExPrivate::prepareForDraw(bool srcPixelsAreOpaque)
+{
+    if (brushTextureDirty && mode != ImageDrawingMode && mode != ImageArrayDrawingMode)
+        updateBrushTexture();
+
+    if (compositionModeDirty)
+        updateCompositionMode();
+
+    if (matrixDirty)
+        updateMatrix();
+
+    const bool stateHasOpacity = q->state()->opacity < 0.99f;
+    if (q->state()->composition_mode == QPainter::CompositionMode_Source
+        || (q->state()->composition_mode == QPainter::CompositionMode_SourceOver
+            && srcPixelsAreOpaque && !stateHasOpacity))
+    {
+        glDisable(GL_BLEND);
+    } else {
+        glEnable(GL_BLEND);
+    }
+
+    QGLEngineShaderManager::OpacityMode opacityMode;
+    if (mode == ImageArrayDrawingMode) {
+        opacityMode = QGLEngineShaderManager::AttributeOpacity;
+    } else {
+        opacityMode = stateHasOpacity ? QGLEngineShaderManager::UniformOpacity
+                                      : QGLEngineShaderManager::NoOpacity;
+        if (stateHasOpacity && (mode != ImageDrawingMode)) {
+            // Using a brush
+            bool brushIsPattern = (currentBrush.style() >= Qt::Dense1Pattern) &&
+                                  (currentBrush.style() <= Qt::DiagCrossPattern);
+
+            if ((currentBrush.style() == Qt::SolidPattern) || brushIsPattern)
+                opacityMode = QGLEngineShaderManager::NoOpacity; // Global opacity handled by srcPixel shader
+        }
+    }
+    shaderManager->setOpacityMode(opacityMode);
+
+    bool changed = shaderManager->useCorrectShaderProg();
+    // If the shader program needs changing, we change it and mark all uniforms as dirty
+    if (changed) {
+        // The shader program has changed so mark all uniforms as dirty:
+        brushUniformsDirty = true;
+        opacityUniformDirty = true;
+        matrixUniformDirty = true;
+    }
+
+    if (brushUniformsDirty && mode != ImageDrawingMode && mode != ImageArrayDrawingMode)
+        updateBrushUniforms();
+
+    if (opacityMode == QGLEngineShaderManager::UniformOpacity && opacityUniformDirty) {
+        shaderManager->currentProgram()->setUniformValue(location(QGLEngineShaderManager::GlobalOpacity), (GLfloat)q->state()->opacity);
+        opacityUniformDirty = false;
+    }
+
+    if (matrixUniformDirty && shaderManager->hasComplexGeometry()) {
+        shaderManager->currentProgram()->setUniformValue(location(QGLEngineShaderManager::Matrix),
+                                                         pmvMatrix);
+        matrixUniformDirty = false;
+    }
+
+    return changed;
+}
+
+void QGL2PaintEngineExPrivate::composite(const QGLRect& boundingRect)
+{
+    setCoords(staticVertexCoordinateArray, boundingRect);
+    setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, staticVertexCoordinateArray);
+    glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
+}
+
+// Draws the vertex array as a set of <vertexArrayStops.size()> triangle fans.
+void QGL2PaintEngineExPrivate::drawVertexArrays(const float *data, int *stops, int stopCount,
+                                                GLenum primitive)
+{
+    // Now setup the pointer to the vertex array:
+    setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, (GLfloat*)data);
+
+    int previousStop = 0;
+    for (int i=0; i<stopCount; ++i) {
+        int stop = stops[i];
+/*
+        qDebug("Drawing triangle fan for vertecies %d -> %d:", previousStop, stop-1);
+        for (int i=previousStop; i<stop; ++i)
+            qDebug("   %02d: [%.2f, %.2f]", i, vertexArray.data()[i].x, vertexArray.data()[i].y);
+*/
+        glDrawArrays(primitive, previousStop, stop - previousStop);
+        previousStop = stop;
+    }
+}
+
+/////////////////////////////////// Public Methods //////////////////////////////////////////
+
+QGL2PaintEngineEx::QGL2PaintEngineEx()
+    : QPaintEngineEx(*(new QGL2PaintEngineExPrivate(this)))
+{
+}
+
+QGL2PaintEngineEx::~QGL2PaintEngineEx()
+{
+}
+
+void QGL2PaintEngineEx::fill(const QVectorPath &path, const QBrush &brush)
+{
+    Q_D(QGL2PaintEngineEx);
+
+    if (qbrush_style(brush) == Qt::NoBrush)
+        return;
+    ensureActive();
+    d->setBrush(brush);
+    d->fill(path);
+}
+
+Q_GUI_EXPORT bool qt_scaleForTransform(const QTransform &transform, qreal *scale); // qtransform.cpp
+
+
+void QGL2PaintEngineEx::stroke(const QVectorPath &path, const QPen &pen)
+{
+    Q_D(QGL2PaintEngineEx);
+
+    const QBrush &penBrush = qpen_brush(pen);
+    if (qpen_style(pen) == Qt::NoPen || qbrush_style(penBrush) == Qt::NoBrush)
+        return;
+
+    QOpenGL2PaintEngineState *s = state();
+    if (pen.isCosmetic() && !qt_scaleForTransform(s->transform(), 0)) {
+        // QTriangulatingStroker class is not meant to support cosmetically sheared strokes.
+        QPaintEngineEx::stroke(path, pen);
+        return;
+    }
+
+    ensureActive();
+    d->setBrush(penBrush);
+    d->stroke(path, pen);
+}
+
+void QGL2PaintEngineExPrivate::stroke(const QVectorPath &path, const QPen &pen)
+{
+    const QOpenGL2PaintEngineState *s = q->state();
+    if (snapToPixelGrid) {
+        snapToPixelGrid = false;
+        matrixDirty = true;
+    }
+
+    const Qt::PenStyle penStyle = qpen_style(pen);
+    const QBrush &penBrush = qpen_brush(pen);
+    const bool opaque = penBrush.isOpaque() && s->opacity > 0.99;
+
+    transferMode(BrushDrawingMode);
+
+    // updateMatrix() is responsible for setting the inverse scale on
+    // the strokers, so we need to call it here and not wait for
+    // prepareForDraw() down below.
+    updateMatrix();
+
+    QRectF clip = q->state()->matrix.inverted().mapRect(q->state()->clipEnabled
+                                                        ? q->state()->rectangleClip
+                                                        : QRectF(0, 0, width, height));
+
+    if (penStyle == Qt::SolidLine) {
+        stroker.process(path, pen, clip);
+
+    } else { // Some sort of dash
+        dasher.process(path, pen, clip);
+
+        QVectorPath dashStroke(dasher.points(),
+                               dasher.elementCount(),
+                               dasher.elementTypes());
+        stroker.process(dashStroke, pen, clip);
+    }
+
+    if (!stroker.vertexCount())
+        return;
+
+    if (opaque) {
+        prepareForDraw(opaque);
+        setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, stroker.vertices());
+        glDrawArrays(GL_TRIANGLE_STRIP, 0, stroker.vertexCount() / 2);
+
+//         QBrush b(Qt::green);
+//         d->setBrush(&b);
+//         d->prepareForDraw(true);
+//         glDrawArrays(GL_LINE_STRIP, 0, d->stroker.vertexCount() / 2);
+
+    } else {
+        qreal width = qpen_widthf(pen) / 2;
+        if (width == 0)
+            width = 0.5;
+        qreal extra = pen.joinStyle() == Qt::MiterJoin
+                      ? qMax(pen.miterLimit() * width, width)
+                      : width;
+
+        if (pen.isCosmetic())
+            extra = extra * inverseScale;
+
+        QRectF bounds = path.controlPointRect().adjusted(-extra, -extra, extra, extra);
+
+        fillStencilWithVertexArray(stroker.vertices(), stroker.vertexCount() / 2,
+                                      0, 0, bounds, QGL2PaintEngineExPrivate::TriStripStrokeFillMode);
+
+        glStencilOp(GL_KEEP, GL_REPLACE, GL_REPLACE);
+
+        // Pass when any bit is set, replace stencil value with 0
+        glStencilFunc(GL_NOTEQUAL, 0, GL_STENCIL_HIGH_BIT);
+        prepareForDraw(false);
+
+        // Stencil the brush onto the dest buffer
+        composite(bounds);
+
+        glStencilMask(0);
+
+        updateClipScissorTest();
+    }
+}
+
+void QGL2PaintEngineEx::penChanged() { }
+void QGL2PaintEngineEx::brushChanged() { }
+void QGL2PaintEngineEx::brushOriginChanged() { }
+
+void QGL2PaintEngineEx::opacityChanged()
+{
+//    qDebug("QGL2PaintEngineEx::opacityChanged()");
+    Q_D(QGL2PaintEngineEx);
+    state()->opacityChanged = true;
+
+    Q_ASSERT(d->shaderManager);
+    d->brushUniformsDirty = true;
+    d->opacityUniformDirty = true;
+}
+
+void QGL2PaintEngineEx::compositionModeChanged()
+{
+//     qDebug("QGL2PaintEngineEx::compositionModeChanged()");
+    Q_D(QGL2PaintEngineEx);
+    state()->compositionModeChanged = true;
+    d->compositionModeDirty = true;
+}
+
+void QGL2PaintEngineEx::renderHintsChanged()
+{
+    state()->renderHintsChanged = true;
+
+#if !defined(QT_OPENGL_ES_2)
+    if ((state()->renderHints & QPainter::Antialiasing)
+        || (state()->renderHints & QPainter::HighQualityAntialiasing))
+        glEnable(GL_MULTISAMPLE);
+    else
+        glDisable(GL_MULTISAMPLE);
+#endif
+
+    Q_D(QGL2PaintEngineEx);
+    d->lastTextureUsed = GLuint(-1);
+    d->brushTextureDirty = true;
+//    qDebug("QGL2PaintEngineEx::renderHintsChanged() not implemented!");
+}
+
+void QGL2PaintEngineEx::transformChanged()
+{
+    Q_D(QGL2PaintEngineEx);
+    d->matrixDirty = true;
+    state()->matrixChanged = true;
+}
+
+
+static const QRectF scaleRect(const QRectF &r, qreal sx, qreal sy)
+{
+    return QRectF(r.x() * sx, r.y() * sy, r.width() * sx, r.height() * sy);
+}
+
+void QGL2PaintEngineEx::drawPixmap(const QRectF& dest, const QPixmap & pixmap, const QRectF & src)
+{
+    Q_D(QGL2PaintEngineEx);
+    QGLContext *ctx = d->ctx;
+
+    int max_texture_size = ctx->d_func()->maxTextureSize();
+    if (pixmap.width() > max_texture_size || pixmap.height() > max_texture_size) {
+        QPixmap scaled = pixmap.scaled(max_texture_size, max_texture_size, Qt::KeepAspectRatio);
+
+        const qreal sx = scaled.width() / qreal(pixmap.width());
+        const qreal sy = scaled.height() / qreal(pixmap.height());
+
+        drawPixmap(dest, scaled, scaleRect(src, sx, sy));
+        return;
+    }
+
+    ensureActive();
+    d->transferMode(ImageDrawingMode);
+
+    QGLContext::BindOptions bindOptions = QGLContext::InternalBindOption|QGLContext::CanFlipNativePixmapBindOption;
+#ifdef QGL_USE_TEXTURE_POOL
+    bindOptions |= QGLContext::TemporarilyCachedBindOption;
+#endif
+
+    glActiveTexture(GL_TEXTURE0 + QT_IMAGE_TEXTURE_UNIT);
+    QGLTexture *texture =
+        ctx->d_func()->bindTexture(pixmap, GL_TEXTURE_2D, GL_RGBA, bindOptions);
+
+    GLfloat top = texture->options & QGLContext::InvertedYBindOption ? (pixmap.height() - src.top()) : src.top();
+    GLfloat bottom = texture->options & QGLContext::InvertedYBindOption ? (pixmap.height() - src.bottom()) : src.bottom();
+    QGLRect srcRect(src.left(), top, src.right(), bottom);
+
+    bool isBitmap = pixmap.isQBitmap();
+    bool isOpaque = !isBitmap && !pixmap.hasAlpha();
+
+    d->updateTextureFilter(GL_TEXTURE_2D, GL_CLAMP_TO_EDGE,
+                           state()->renderHints & QPainter::SmoothPixmapTransform, texture->id);
+    d->drawTexture(dest, srcRect, pixmap.size(), isOpaque, isBitmap);
+
+    if (texture->options&QGLContext::TemporarilyCachedBindOption) {
+        // pixmap was temporarily cached as a QImage texture by pooling system
+        // and should be destroyed immediately
+        QGLTextureCache::instance()->remove(ctx, texture->id);
+    }
+}
+
+void QGL2PaintEngineEx::drawImage(const QRectF& dest, const QImage& image, const QRectF& src,
+                        Qt::ImageConversionFlags)
+{
+    Q_D(QGL2PaintEngineEx);
+    QGLContext *ctx = d->ctx;
+
+    int max_texture_size = ctx->d_func()->maxTextureSize();
+    if (image.width() > max_texture_size || image.height() > max_texture_size) {
+        QImage scaled = image.scaled(max_texture_size, max_texture_size, Qt::KeepAspectRatio);
+
+        const qreal sx = scaled.width() / qreal(image.width());
+        const qreal sy = scaled.height() / qreal(image.height());
+
+        drawImage(dest, scaled, scaleRect(src, sx, sy));
+        return;
+    }
+
+    ensureActive();
+    d->transferMode(ImageDrawingMode);
+
+    glActiveTexture(GL_TEXTURE0 + QT_IMAGE_TEXTURE_UNIT);
+
+    QGLContext::BindOptions bindOptions = QGLContext::InternalBindOption;
+#ifdef QGL_USE_TEXTURE_POOL
+    bindOptions |= QGLContext::TemporarilyCachedBindOption;
+#endif
+
+    QGLTexture *texture = ctx->d_func()->bindTexture(image, GL_TEXTURE_2D, GL_RGBA, bindOptions);
+    GLuint id = texture->id;
+
+    d->updateTextureFilter(GL_TEXTURE_2D, GL_CLAMP_TO_EDGE,
+                           state()->renderHints & QPainter::SmoothPixmapTransform, id);
+    d->drawTexture(dest, src, image.size(), !image.hasAlphaChannel());
+
+    if (texture->options&QGLContext::TemporarilyCachedBindOption) {
+        // image was temporarily cached by texture pooling system
+        // and should be destroyed immediately
+        QGLTextureCache::instance()->remove(ctx, texture->id);
+    }
+}
+
+void QGL2PaintEngineEx::drawStaticTextItem(QStaticTextItem *textItem)
+{
+    Q_D(QGL2PaintEngineEx);
+
+    ensureActive();
+
+    QFontEngineGlyphCache::Type glyphType = textItem->fontEngine()->glyphFormat >= 0
+                                            ? QFontEngineGlyphCache::Type(textItem->fontEngine()->glyphFormat)
+                                            : d->glyphCacheType;
+    if (glyphType == QFontEngineGlyphCache::Raster_RGBMask) {
+        if (d->device->alphaRequested() || state()->matrix.type() > QTransform::TxTranslate
+            || (state()->composition_mode != QPainter::CompositionMode_Source
+            && state()->composition_mode != QPainter::CompositionMode_SourceOver))
+        {
+            glyphType = QFontEngineGlyphCache::Raster_A8;
+        }
+    }
+
+    d->drawCachedGlyphs(glyphType, textItem);
+}
+
+bool QGL2PaintEngineEx::drawTexture(const QRectF &dest, GLuint textureId, const QSize &size, const QRectF &src)
+{
+    Q_D(QGL2PaintEngineEx);
+    if (!d->shaderManager)
+        return false;
+
+    ensureActive();
+    d->transferMode(ImageDrawingMode);
+
+#ifndef QT_OPENGL_ES_2
+    QGLContext *ctx = d->ctx;
+#endif
+    glActiveTexture(GL_TEXTURE0 + QT_IMAGE_TEXTURE_UNIT);
+    glBindTexture(GL_TEXTURE_2D, textureId);
+
+    QGLRect srcRect(src.left(), src.bottom(), src.right(), src.top());
+
+    d->updateTextureFilter(GL_TEXTURE_2D, GL_CLAMP_TO_EDGE,
+                           state()->renderHints & QPainter::SmoothPixmapTransform, textureId);
+    d->drawTexture(dest, srcRect, size, false);
+    return true;
+}
+
+void QGL2PaintEngineEx::drawTextItem(const QPointF &p, const QTextItem &textItem)
+{
+    Q_D(QGL2PaintEngineEx);
+
+    ensureActive();
+    QOpenGL2PaintEngineState *s = state();
+
+    const QTextItemInt &ti = static_cast<const QTextItemInt &>(textItem);
+
+    QTransform::TransformationType txtype = s->matrix.type();
+
+    float det = s->matrix.determinant();
+    bool drawCached = txtype < QTransform::TxProject;
+
+    // don't try to cache huge fonts or vastly transformed fonts
+    const qreal pixelSize = ti.fontEngine->fontDef.pixelSize;
+    if (pixelSize * pixelSize * qAbs(det) >= QT_MAX_CACHED_GLYPH_SIZE * QT_MAX_CACHED_GLYPH_SIZE ||
+        det < 0.25f || det > 4.f)
+        drawCached = false;
+
+    QFontEngineGlyphCache::Type glyphType = ti.fontEngine->glyphFormat >= 0
+                                            ? QFontEngineGlyphCache::Type(ti.fontEngine->glyphFormat)
+                                            : d->glyphCacheType;
+
+
+    if (glyphType == QFontEngineGlyphCache::Raster_RGBMask) {
+        if (d->device->alphaRequested() || txtype > QTransform::TxTranslate
+            || (state()->composition_mode != QPainter::CompositionMode_Source
+            && state()->composition_mode != QPainter::CompositionMode_SourceOver))
+        {
+            glyphType = QFontEngineGlyphCache::Raster_A8;
+        }
+    }
+
+    if (drawCached) {
+        QVarLengthArray<QFixedPoint> positions;
+        QVarLengthArray<glyph_t> glyphs;
+        QTransform matrix = QTransform::fromTranslate(p.x(), p.y());
+        ti.fontEngine->getGlyphPositions(ti.glyphs, matrix, ti.flags, glyphs, positions);
+
+        {
+            QStaticTextItem staticTextItem;
+            staticTextItem.chars = const_cast<QChar *>(ti.chars);
+            staticTextItem.setFontEngine(ti.fontEngine);
+            staticTextItem.glyphs = glyphs.data();
+            staticTextItem.numChars = ti.num_chars;
+            staticTextItem.numGlyphs = glyphs.size();
+            staticTextItem.glyphPositions = positions.data();
+
+            d->drawCachedGlyphs(glyphType, &staticTextItem);
+        }
+        return;
+    }
+
+    QPaintEngineEx::drawTextItem(p, ti);
+}
+
+namespace {
+
+    class QOpenGLStaticTextUserData: public QStaticTextUserData
+    {
+    public:
+        QOpenGLStaticTextUserData()
+            : QStaticTextUserData(OpenGLUserData), cacheSize(0, 0), cacheSerialNumber(0)
+        {
+        }
+
+        ~QOpenGLStaticTextUserData()
+        {
+        }
+
+        QSize cacheSize;
+        QGL2PEXVertexArray vertexCoordinateArray;
+        QGL2PEXVertexArray textureCoordinateArray;
+        QFontEngineGlyphCache::Type glyphType;
+        int cacheSerialNumber;
+    };
+
+}
+
+// #define QT_OPENGL_DRAWCACHEDGLYPHS_INDEX_ARRAY_VBO
+
+void QGL2PaintEngineExPrivate::drawCachedGlyphs(QFontEngineGlyphCache::Type glyphType,
+                                                QStaticTextItem *staticTextItem)
+{
+    Q_Q(QGL2PaintEngineEx);
+
+    QOpenGL2PaintEngineState *s = q->state();
+
+    void *cacheKey = const_cast<QGLContext *>(QGLContextPrivate::contextGroup(ctx)->context());
+    bool recreateVertexArrays = false;
+
+    QGLTextureGlyphCache *cache =
+            (QGLTextureGlyphCache *) staticTextItem->fontEngine()->glyphCache(cacheKey, glyphType, QTransform());
+    if (!cache || cache->cacheType() != glyphType || cache->context() == 0) {
+        cache = new QGLTextureGlyphCache(ctx, glyphType, QTransform());
+        staticTextItem->fontEngine()->setGlyphCache(cacheKey, cache);
+        cache->insert(ctx, cache);
+        recreateVertexArrays = true;
+    }
+
+    if (staticTextItem->userDataNeedsUpdate) {
+        recreateVertexArrays = true;
+    } else if (staticTextItem->userData() == 0) {
+        recreateVertexArrays = true;
+    } else if (staticTextItem->userData()->type != QStaticTextUserData::OpenGLUserData) {
+        recreateVertexArrays = true;
+    } else {
+        QOpenGLStaticTextUserData *userData = static_cast<QOpenGLStaticTextUserData *>(staticTextItem->userData());
+        if (userData->glyphType != glyphType) {
+            recreateVertexArrays = true;
+        } else if (userData->cacheSerialNumber != cache->serialNumber()) {
+            recreateVertexArrays = true;
+        }
+    }
+
+    // We only need to update the cache with new glyphs if we are actually going to recreate the vertex arrays.
+    // If the cache size has changed, we do need to regenerate the vertices, but we don't need to repopulate the
+    // cache so this text is performed before we test if the cache size has changed.
+    if (recreateVertexArrays) {
+        cache->setPaintEnginePrivate(this);
+        if (!cache->populate(staticTextItem->fontEngine(), staticTextItem->numGlyphs,
+                             staticTextItem->glyphs, staticTextItem->glyphPositions)) {
+            // No space for glyphs in cache. We need to reset it and try again.
+            cache->clear();
+            cache->populate(staticTextItem->fontEngine(), staticTextItem->numGlyphs,
+                            staticTextItem->glyphs, staticTextItem->glyphPositions);
+        }
+        cache->fillInPendingGlyphs();
+    }
+
+    if (cache->width() == 0 || cache->height() == 0)
+        return;
+
+    transferMode(TextDrawingMode);
+
+    int margin = cache->glyphMargin();
+
+    GLfloat dx = 1.0 / cache->width();
+    GLfloat dy = 1.0 / cache->height();
+
+    // Use global arrays by default
+    QGL2PEXVertexArray *vertexCoordinates = &vertexCoordinateArray;
+    QGL2PEXVertexArray *textureCoordinates = &textureCoordinateArray;
+
+    if (staticTextItem->useBackendOptimizations) {
+        QOpenGLStaticTextUserData *userData = 0;
+
+        if (staticTextItem->userData() == 0
+            || staticTextItem->userData()->type != QStaticTextUserData::OpenGLUserData) {
+
+            userData = new QOpenGLStaticTextUserData();
+            staticTextItem->setUserData(userData);
+
+        } else {
+            userData = static_cast<QOpenGLStaticTextUserData*>(staticTextItem->userData());
+        }
+
+        userData->glyphType = glyphType;
+        userData->cacheSerialNumber = cache->serialNumber();
+
+        // Use cache if backend optimizations is turned on
+        vertexCoordinates = &userData->vertexCoordinateArray;
+        textureCoordinates = &userData->textureCoordinateArray;
+
+        QSize size(cache->width(), cache->height());
+        if (userData->cacheSize != size) {
+            recreateVertexArrays = true;
+            userData->cacheSize = size;
+        }
+    }
+
+    if (recreateVertexArrays) {
+        vertexCoordinates->clear();
+        textureCoordinates->clear();
+
+        bool supportsSubPixelPositions = staticTextItem->fontEngine()->supportsSubPixelPositions();
+        for (int i=0; i<staticTextItem->numGlyphs; ++i) {
+            QFixed subPixelPosition;
+            if (supportsSubPixelPositions)
+                subPixelPosition = cache->subPixelPositionForX(staticTextItem->glyphPositions[i].x);
+
+            QTextureGlyphCache::GlyphAndSubPixelPosition glyph(staticTextItem->glyphs[i], subPixelPosition);
+
+            const QTextureGlyphCache::Coord &c = cache->coords[glyph];
+            if (c.isNull())
+                continue;
+
+            int x = qFloor(staticTextItem->glyphPositions[i].x) + c.baseLineX - margin;
+            int y = qFloor(staticTextItem->glyphPositions[i].y) - c.baseLineY - margin;
+
+            vertexCoordinates->addQuad(QRectF(x, y, c.w, c.h));
+            textureCoordinates->addQuad(QRectF(c.x*dx, c.y*dy, c.w * dx, c.h * dy));
+        }
+
+        staticTextItem->userDataNeedsUpdate = false;
+    }
+
+    int numGlyphs = vertexCoordinates->vertexCount() / 4;
+
+    if (elementIndices.size() < numGlyphs*6) {
+        Q_ASSERT(elementIndices.size() % 6 == 0);
+        int j = elementIndices.size() / 6 * 4;
+        while (j < numGlyphs*4) {
+            elementIndices.append(j + 0);
+            elementIndices.append(j + 0);
+            elementIndices.append(j + 1);
+            elementIndices.append(j + 2);
+            elementIndices.append(j + 3);
+            elementIndices.append(j + 3);
+
+            j += 4;
+        }
+
+#if defined(QT_OPENGL_DRAWCACHEDGLYPHS_INDEX_ARRAY_VBO)
+        if (elementIndicesVBOId == 0)
+            glGenBuffers(1, &elementIndicesVBOId);
+
+        glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, elementIndicesVBOId);
+        glBufferData(GL_ELEMENT_ARRAY_BUFFER, elementIndices.size() * sizeof(GLushort),
+                     elementIndices.constData(), GL_STATIC_DRAW);
+#endif
+    } else {
+#if defined(QT_OPENGL_DRAWCACHEDGLYPHS_INDEX_ARRAY_VBO)
+        glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, elementIndicesVBOId);
+#endif
+    }
+
+    setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, (GLfloat*)vertexCoordinates->data());
+    setVertexAttributePointer(QT_TEXTURE_COORDS_ATTR, (GLfloat*)textureCoordinates->data());
+
+    if (!snapToPixelGrid) {
+        snapToPixelGrid = true;
+        matrixDirty = true;
+    }
+
+    QBrush pensBrush = q->state()->pen.brush();
+    setBrush(pensBrush);
+
+    if (glyphType == QFontEngineGlyphCache::Raster_RGBMask) {
+
+        // Subpixel antialiasing without gamma correction
+
+        QPainter::CompositionMode compMode = q->state()->composition_mode;
+        Q_ASSERT(compMode == QPainter::CompositionMode_Source
+            || compMode == QPainter::CompositionMode_SourceOver);
+
+        shaderManager->setMaskType(QGLEngineShaderManager::SubPixelMaskPass1);
+
+        if (pensBrush.style() == Qt::SolidPattern) {
+            // Solid patterns can get away with only one pass.
+            QColor c = pensBrush.color();
+            qreal oldOpacity = q->state()->opacity;
+            if (compMode == QPainter::CompositionMode_Source) {
+                c = qt_premultiplyColor(c, q->state()->opacity);
+                q->state()->opacity = 1;
+                opacityUniformDirty = true;
+            }
+
+            compositionModeDirty = false; // I can handle this myself, thank you very much
+            prepareForDraw(false); // Text always causes src pixels to be transparent
+
+            // prepareForDraw() have set the opacity on the current shader, so the opacity state can now be reset.
+            if (compMode == QPainter::CompositionMode_Source) {
+                q->state()->opacity = oldOpacity;
+                opacityUniformDirty = true;
+            }
+
+            glEnable(GL_BLEND);
+            glBlendFunc(GL_CONSTANT_COLOR, GL_ONE_MINUS_SRC_COLOR);
+            glBlendColor(c.redF(), c.greenF(), c.blueF(), c.alphaF());
+        } else {
+            // Other brush styles need two passes.
+
+            qreal oldOpacity = q->state()->opacity;
+            if (compMode == QPainter::CompositionMode_Source) {
+                q->state()->opacity = 1;
+                opacityUniformDirty = true;
+                pensBrush = Qt::white;
+                setBrush(pensBrush);
+            }
+
+            compositionModeDirty = false; // I can handle this myself, thank you very much
+            prepareForDraw(false); // Text always causes src pixels to be transparent
+            glEnable(GL_BLEND);
+            glBlendFunc(GL_ZERO, GL_ONE_MINUS_SRC_COLOR);
+
+            glActiveTexture(GL_TEXTURE0 + QT_MASK_TEXTURE_UNIT);
+            glBindTexture(GL_TEXTURE_2D, cache->texture());
+            updateTextureFilter(GL_TEXTURE_2D, GL_REPEAT, false);
+
+#if defined(QT_OPENGL_DRAWCACHEDGLYPHS_INDEX_ARRAY_VBO)
+            glDrawElements(GL_TRIANGLE_STRIP, 6 * numGlyphs, GL_UNSIGNED_SHORT, 0);
+#else
+            glDrawElements(GL_TRIANGLE_STRIP, 6 * numGlyphs, GL_UNSIGNED_SHORT, elementIndices.data());
+#endif
+
+            shaderManager->setMaskType(QGLEngineShaderManager::SubPixelMaskPass2);
+
+            if (compMode == QPainter::CompositionMode_Source) {
+                q->state()->opacity = oldOpacity;
+                opacityUniformDirty = true;
+                pensBrush = q->state()->pen.brush();
+                setBrush(pensBrush);
+            }
+
+            compositionModeDirty = false;
+            prepareForDraw(false); // Text always causes src pixels to be transparent
+            glEnable(GL_BLEND);
+            glBlendFunc(GL_ONE, GL_ONE);
+        }
+        compositionModeDirty = true;
+    } else {
+        // Greyscale/mono glyphs
+
+        shaderManager->setMaskType(QGLEngineShaderManager::PixelMask);
+        prepareForDraw(false); // Text always causes src pixels to be transparent
+    }
+    //### TODO: Gamma correction
+
+    QGLTextureGlyphCache::FilterMode filterMode = (s->matrix.type() > QTransform::TxTranslate)?QGLTextureGlyphCache::Linear:QGLTextureGlyphCache::Nearest;
+    if (lastMaskTextureUsed != cache->texture() || cache->filterMode() != filterMode) {
+
+        glActiveTexture(GL_TEXTURE0 + QT_MASK_TEXTURE_UNIT);
+        if (lastMaskTextureUsed != cache->texture()) {
+            glBindTexture(GL_TEXTURE_2D, cache->texture());
+            lastMaskTextureUsed = cache->texture();
+        }
+
+        if (cache->filterMode() != filterMode) {
+            if (filterMode == QGLTextureGlyphCache::Linear) {
+                glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+                glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+            } else {
+                glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+                glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+            }
+            cache->setFilterMode(filterMode);
+        }
+    }
+
+#if defined(QT_OPENGL_DRAWCACHEDGLYPHS_INDEX_ARRAY_VBO)
+    glDrawElements(GL_TRIANGLE_STRIP, 6 * numGlyphs, GL_UNSIGNED_SHORT, 0);
+    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
+#else
+    glDrawElements(GL_TRIANGLE_STRIP, 6 * numGlyphs, GL_UNSIGNED_SHORT, elementIndices.data());
+#endif
+}
+
+void QGL2PaintEngineEx::drawPixmapFragments(const QPainter::PixmapFragment *fragments, int fragmentCount, const QPixmap &pixmap,
+                                            QPainter::PixmapFragmentHints hints)
+{
+    Q_D(QGL2PaintEngineEx);
+    // Use fallback for extended composition modes.
+    if (state()->composition_mode > QPainter::CompositionMode_Plus) {
+        QPaintEngineEx::drawPixmapFragments(fragments, fragmentCount, pixmap, hints);
+        return;
+    }
+
+    ensureActive();
+    int max_texture_size = d->ctx->d_func()->maxTextureSize();
+    if (pixmap.width() > max_texture_size || pixmap.height() > max_texture_size) {
+        QPixmap scaled = pixmap.scaled(max_texture_size, max_texture_size, Qt::KeepAspectRatio);
+        d->drawPixmapFragments(fragments, fragmentCount, scaled, hints);
+    } else {
+        d->drawPixmapFragments(fragments, fragmentCount, pixmap, hints);
+    }
+}
+
+
+void QGL2PaintEngineExPrivate::drawPixmapFragments(const QPainter::PixmapFragment *fragments,
+                                                   int fragmentCount, const QPixmap &pixmap,
+                                                   QPainter::PixmapFragmentHints hints)
+{
+    GLfloat dx = 1.0f / pixmap.size().width();
+    GLfloat dy = 1.0f / pixmap.size().height();
+
+    vertexCoordinateArray.clear();
+    textureCoordinateArray.clear();
+    opacityArray.reset();
+
+    if (snapToPixelGrid) {
+        snapToPixelGrid = false;
+        matrixDirty = true;
+    }
+
+    bool allOpaque = true;
+
+    for (int i = 0; i < fragmentCount; ++i) {
+        qreal s = 0;
+        qreal c = 1;
+        if (fragments[i].rotation != 0) {
+            s = qFastSin(fragments[i].rotation * Q_PI / 180);
+            c = qFastCos(fragments[i].rotation * Q_PI / 180);
+        }
+
+        qreal right = 0.5 * fragments[i].scaleX * fragments[i].width;
+        qreal bottom = 0.5 * fragments[i].scaleY * fragments[i].height;
+        QGLPoint bottomRight(right * c - bottom * s, right * s + bottom * c);
+        QGLPoint bottomLeft(-right * c - bottom * s, -right * s + bottom * c);
+
+        vertexCoordinateArray.addVertex(bottomRight.x + fragments[i].x, bottomRight.y + fragments[i].y);
+        vertexCoordinateArray.addVertex(-bottomLeft.x + fragments[i].x, -bottomLeft.y + fragments[i].y);
+        vertexCoordinateArray.addVertex(-bottomRight.x + fragments[i].x, -bottomRight.y + fragments[i].y);
+        vertexCoordinateArray.addVertex(-bottomRight.x + fragments[i].x, -bottomRight.y + fragments[i].y);
+        vertexCoordinateArray.addVertex(bottomLeft.x + fragments[i].x, bottomLeft.y + fragments[i].y);
+        vertexCoordinateArray.addVertex(bottomRight.x + fragments[i].x, bottomRight.y + fragments[i].y);
+
+        QGLRect src(fragments[i].sourceLeft * dx, fragments[i].sourceTop * dy,
+                    (fragments[i].sourceLeft + fragments[i].width) * dx,
+                    (fragments[i].sourceTop + fragments[i].height) * dy);
+
+        textureCoordinateArray.addVertex(src.right, src.bottom);
+        textureCoordinateArray.addVertex(src.right, src.top);
+        textureCoordinateArray.addVertex(src.left, src.top);
+        textureCoordinateArray.addVertex(src.left, src.top);
+        textureCoordinateArray.addVertex(src.left, src.bottom);
+        textureCoordinateArray.addVertex(src.right, src.bottom);
+
+        qreal opacity = fragments[i].opacity * q->state()->opacity;
+        opacityArray << opacity << opacity << opacity << opacity << opacity << opacity;
+        allOpaque &= (opacity >= 0.99f);
+    }
+
+    glActiveTexture(GL_TEXTURE0 + QT_IMAGE_TEXTURE_UNIT);
+    QGLTexture *texture = ctx->d_func()->bindTexture(pixmap, GL_TEXTURE_2D, GL_RGBA,
+                                                     QGLContext::InternalBindOption
+                                                     | QGLContext::CanFlipNativePixmapBindOption);
+
+    if (texture->options & QGLContext::InvertedYBindOption) {
+        // Flip texture y-coordinate.
+        QGLPoint *data = textureCoordinateArray.data();
+        for (int i = 0; i < 6 * fragmentCount; ++i)
+            data[i].y = 1 - data[i].y;
+    }
+
+    transferMode(ImageArrayDrawingMode);
+
+    bool isBitmap = pixmap.isQBitmap();
+    bool isOpaque = !isBitmap && (!pixmap.hasAlpha() || (hints & QPainter::OpaqueHint)) && allOpaque;
+
+    updateTextureFilter(GL_TEXTURE_2D, GL_CLAMP_TO_EDGE,
+                           q->state()->renderHints & QPainter::SmoothPixmapTransform, texture->id);
+
+    // Setup for texture drawing
+    currentBrush = noBrush;
+    shaderManager->setSrcPixelType(isBitmap ? QGLEngineShaderManager::PatternSrc
+                                            : QGLEngineShaderManager::ImageSrc);
+    if (prepareForDraw(isOpaque))
+        shaderManager->currentProgram()->setUniformValue(location(QGLEngineShaderManager::ImageTexture), QT_IMAGE_TEXTURE_UNIT);
+
+    if (isBitmap) {
+        QColor col = qt_premultiplyColor(q->state()->pen.color(), (GLfloat)q->state()->opacity);
+        shaderManager->currentProgram()->setUniformValue(location(QGLEngineShaderManager::PatternColor), col);
+    }
+
+    glDrawArrays(GL_TRIANGLES, 0, 6 * fragmentCount);
+}
+
+bool QGL2PaintEngineEx::begin(QPaintDevice *pdev)
+{
+    Q_D(QGL2PaintEngineEx);
+
+//     qDebug("QGL2PaintEngineEx::begin()");
+    if (pdev->devType() == QInternal::OpenGL)
+        d->device = static_cast<QGLPaintDevice*>(pdev);
+    else
+        d->device = QGLPaintDevice::getDevice(pdev);
+
+    if (!d->device)
+        return false;
+
+    d->ctx = d->device->context();
+    d->ctx->d_ptr->active_engine = this;
+
+    const QSize sz = d->device->size();
+    d->width = sz.width();
+    d->height = sz.height();
+    d->mode = BrushDrawingMode;
+    d->brushTextureDirty = true;
+    d->brushUniformsDirty = true;
+    d->matrixUniformDirty = true;
+    d->matrixDirty = true;
+    d->compositionModeDirty = true;
+    d->opacityUniformDirty = true;
+    d->needsSync = true;
+    d->useSystemClip = !systemClip().isEmpty();
+    d->currentBrush = QBrush();
+
+    d->dirtyStencilRegion = QRect(0, 0, d->width, d->height);
+    d->stencilClean = true;
+
+    // Calling begin paint should make the correct context current. So, any
+    // code which calls into GL or otherwise needs a current context *must*
+    // go after beginPaint:
+    d->device->beginPaint();
+
+#if !defined(QT_OPENGL_ES_2)
+    bool success = qt_resolve_version_2_0_functions(d->ctx)
+                   && qt_resolve_buffer_extensions(d->ctx);
+    Q_ASSERT(success);
+    Q_UNUSED(success);
+#endif
+
+    d->shaderManager = new QGLEngineShaderManager(d->ctx);
+
+    glDisable(GL_STENCIL_TEST);
+    glDisable(GL_DEPTH_TEST);
+    glDisable(GL_SCISSOR_TEST);
+
+#if !defined(QT_OPENGL_ES_2)
+    glDisable(GL_MULTISAMPLE);
+#endif
+
+    d->glyphCacheType = QFontEngineGlyphCache::Raster_A8;
+
+#if !defined(QT_OPENGL_ES_2)
+#if defined(Q_WS_WIN)
+    if (qt_cleartype_enabled)
+#endif
+#if defined(Q_WS_MAC)
+    if (qt_applefontsmoothing_enabled)
+#endif
+        d->glyphCacheType = QFontEngineGlyphCache::Raster_RGBMask;
+#endif
+
+#if defined(QT_OPENGL_ES_2)
+    // OpenGL ES can't switch MSAA off, so if the gl paint device is
+    // multisampled, it's always multisampled.
+    d->multisamplingAlwaysEnabled = d->device->format().sampleBuffers();
+#else
+    d->multisamplingAlwaysEnabled = false;
+#endif
+
+    return true;
+}
+
+bool QGL2PaintEngineEx::end()
+{
+    Q_D(QGL2PaintEngineEx);
+    QGLContext *ctx = d->ctx;
+
+    glUseProgram(0);
+    d->transferMode(BrushDrawingMode);
+    d->device->endPaint();
+
+#if defined(Q_WS_X11)
+    // On some (probably all) drivers, deleting an X pixmap which has been bound to a texture
+    // before calling glFinish/swapBuffers renders garbage. Presumably this is because X deletes
+    // the pixmap behind the driver's back before it's had a chance to use it. To fix this, we
+    // reference all QPixmaps which have been bound to stop them being deleted and only deref
+    // them here, after swapBuffers, where they can be safely deleted.
+    ctx->d_func()->boundPixmaps.clear();
+#endif
+    d->ctx->d_ptr->active_engine = 0;
+
+    d->resetGLState();
+
+    delete d->shaderManager;
+    d->shaderManager = 0;
+    d->currentBrush = QBrush();
+
+#ifdef QT_OPENGL_CACHE_AS_VBOS
+    if (!d->unusedVBOSToClean.isEmpty()) {
+        glDeleteBuffers(d->unusedVBOSToClean.size(), d->unusedVBOSToClean.constData());
+        d->unusedVBOSToClean.clear();
+    }
+    if (!d->unusedIBOSToClean.isEmpty()) {
+        glDeleteBuffers(d->unusedIBOSToClean.size(), d->unusedIBOSToClean.constData());
+        d->unusedIBOSToClean.clear();
+    }
+#endif
+
+    return false;
+}
+
+void QGL2PaintEngineEx::ensureActive()
+{
+    Q_D(QGL2PaintEngineEx);
+    QGLContext *ctx = d->ctx;
+
+    if (isActive() && ctx->d_ptr->active_engine != this) {
+        ctx->d_ptr->active_engine = this;
+        d->needsSync = true;
+    }
+
+    d->device->ensureActiveTarget();
+
+    if (d->needsSync) {
+        d->transferMode(BrushDrawingMode);
+        glViewport(0, 0, d->width, d->height);
+        d->needsSync = false;
+        d->lastMaskTextureUsed = 0;
+        d->shaderManager->setDirty();
+        d->ctx->d_func()->syncGlState();
+        for (int i = 0; i < 3; ++i)
+            d->vertexAttribPointers[i] = (GLfloat*)-1; // Assume the pointers are clobbered
+        setState(state());
+    }
+}
+
+void QGL2PaintEngineExPrivate::updateClipScissorTest()
+{
+    Q_Q(QGL2PaintEngineEx);
+    if (q->state()->clipTestEnabled) {
+        glEnable(GL_STENCIL_TEST);
+        glStencilFunc(GL_LEQUAL, q->state()->currentClip, ~GL_STENCIL_HIGH_BIT);
+    } else {
+        glDisable(GL_STENCIL_TEST);
+        glStencilFunc(GL_ALWAYS, 0, 0xff);
+    }
+
+#ifdef QT_GL_NO_SCISSOR_TEST
+    currentScissorBounds = QRect(0, 0, width, height);
+#else
+    QRect bounds = q->state()->rectangleClip;
+    if (!q->state()->clipEnabled) {
+        if (useSystemClip)
+            bounds = systemClip.boundingRect();
+        else
+            bounds = QRect(0, 0, width, height);
+    } else {
+        if (useSystemClip)
+            bounds = bounds.intersected(systemClip.boundingRect());
+        else
+            bounds = bounds.intersected(QRect(0, 0, width, height));
+    }
+
+    currentScissorBounds = bounds;
+
+    if (bounds == QRect(0, 0, width, height)) {
+        glDisable(GL_SCISSOR_TEST);
+    } else {
+        glEnable(GL_SCISSOR_TEST);
+        setScissor(bounds);
+    }
+#endif
+}
+
+void QGL2PaintEngineExPrivate::setScissor(const QRect &rect)
+{
+    const int left = rect.left();
+    const int width = rect.width();
+    int bottom = height - (rect.top() + rect.height());
+    if (device->isFlipped()) {
+        bottom = rect.top();
+    }
+    const int height = rect.height();
+
+    glScissor(left, bottom, width, height);
+}
+
+void QGL2PaintEngineEx::clipEnabledChanged()
+{
+    Q_D(QGL2PaintEngineEx);
+
+    state()->clipChanged = true;
+
+    if (painter()->hasClipping())
+        d->regenerateClip();
+    else
+        d->systemStateChanged();
+}
+
+void QGL2PaintEngineExPrivate::clearClip(uint value)
+{
+    dirtyStencilRegion -= currentScissorBounds;
+
+    glStencilMask(0xff);
+    glClearStencil(value);
+    glClear(GL_STENCIL_BUFFER_BIT);
+    glStencilMask(0x0);
+
+    q->state()->needsClipBufferClear = false;
+}
+
+void QGL2PaintEngineExPrivate::writeClip(const QVectorPath &path, uint value)
+{
+    transferMode(BrushDrawingMode);
+
+    if (snapToPixelGrid) {
+        snapToPixelGrid = false;
+        matrixDirty = true;
+    }
+
+    if (matrixDirty)
+        updateMatrix();
+
+    stencilClean = false;
+
+    const bool singlePass = !path.hasWindingFill()
+        && (((q->state()->currentClip == maxClip - 1) && q->state()->clipTestEnabled)
+            || q->state()->needsClipBufferClear);
+    const uint referenceClipValue = q->state()->needsClipBufferClear ? 1 : q->state()->currentClip;
+
+    if (q->state()->needsClipBufferClear)
+        clearClip(1);
+
+    if (path.isEmpty()) {
+        glEnable(GL_STENCIL_TEST);
+        glStencilFunc(GL_LEQUAL, value, ~GL_STENCIL_HIGH_BIT);
+        return;
+    }
+
+    if (q->state()->clipTestEnabled)
+        glStencilFunc(GL_LEQUAL, q->state()->currentClip, ~GL_STENCIL_HIGH_BIT);
+    else
+        glStencilFunc(GL_ALWAYS, 0, 0xff);
+
+    vertexCoordinateArray.clear();
+    vertexCoordinateArray.addPath(path, inverseScale, false);
+
+    if (!singlePass)
+        fillStencilWithVertexArray(vertexCoordinateArray, path.hasWindingFill());
+
+    glColorMask(false, false, false, false);
+    glEnable(GL_STENCIL_TEST);
+    useSimpleShader();
+
+    if (singlePass) {
+        // Under these conditions we can set the new stencil value in a single
+        // pass, by using the current value and the "new value" as the toggles
+
+        glStencilFunc(GL_LEQUAL, referenceClipValue, ~GL_STENCIL_HIGH_BIT);
+        glStencilOp(GL_KEEP, GL_INVERT, GL_INVERT);
+        glStencilMask(value ^ referenceClipValue);
+
+        drawVertexArrays(vertexCoordinateArray, GL_TRIANGLE_FAN);
+    } else {
+        glStencilOp(GL_KEEP, GL_REPLACE, GL_REPLACE);
+        glStencilMask(0xff);
+
+        if (!q->state()->clipTestEnabled && path.hasWindingFill()) {
+            // Pass when any clip bit is set, set high bit
+            glStencilFunc(GL_NOTEQUAL, GL_STENCIL_HIGH_BIT, ~GL_STENCIL_HIGH_BIT);
+            composite(vertexCoordinateArray.boundingRect());
+        }
+
+        // Pass when high bit is set, replace stencil value with new clip value
+        glStencilFunc(GL_NOTEQUAL, value, GL_STENCIL_HIGH_BIT);
+
+        composite(vertexCoordinateArray.boundingRect());
+    }
+
+    glStencilFunc(GL_LEQUAL, value, ~GL_STENCIL_HIGH_BIT);
+    glStencilMask(0);
+
+    glColorMask(true, true, true, true);
+}
+
+void QGL2PaintEngineEx::clip(const QVectorPath &path, Qt::ClipOperation op)
+{
+//     qDebug("QGL2PaintEngineEx::clip()");
+    Q_D(QGL2PaintEngineEx);
+
+    state()->clipChanged = true;
+
+    ensureActive();
+
+    if (op == Qt::ReplaceClip) {
+        op = Qt::IntersectClip;
+        if (d->hasClipOperations()) {
+            d->systemStateChanged();
+            state()->canRestoreClip = false;
+        }
+    }
+
+#ifndef QT_GL_NO_SCISSOR_TEST
+    if (!path.isEmpty() && op == Qt::IntersectClip && (path.shape() == QVectorPath::RectangleHint)) {
+        const QPointF* const points = reinterpret_cast<const QPointF*>(path.points());
+        QRectF rect(points[0], points[2]);
+
+        if (state()->matrix.type() <= QTransform::TxScale
+            || (state()->matrix.type() == QTransform::TxRotate
+                && qFuzzyIsNull(state()->matrix.m11())
+                && qFuzzyIsNull(state()->matrix.m22())))
+        {
+            state()->rectangleClip = state()->rectangleClip.intersected(state()->matrix.mapRect(rect).toRect());
+            d->updateClipScissorTest();
+            return;
+        }
+    }
+#endif
+
+    const QRect pathRect = state()->matrix.mapRect(path.controlPointRect()).toAlignedRect();
+
+    switch (op) {
+    case Qt::NoClip:
+        if (d->useSystemClip) {
+            state()->clipTestEnabled = true;
+            state()->currentClip = 1;
+        } else {
+            state()->clipTestEnabled = false;
+        }
+        state()->rectangleClip = QRect(0, 0, d->width, d->height);
+        state()->canRestoreClip = false;
+        d->updateClipScissorTest();
+        break;
+    case Qt::IntersectClip:
+        state()->rectangleClip = state()->rectangleClip.intersected(pathRect);
+        d->updateClipScissorTest();
+        d->resetClipIfNeeded();
+        ++d->maxClip;
+        d->writeClip(path, d->maxClip);
+        state()->currentClip = d->maxClip;
+        state()->clipTestEnabled = true;
+        break;
+    case Qt::UniteClip: {
+        d->resetClipIfNeeded();
+        ++d->maxClip;
+        if (state()->rectangleClip.isValid()) {
+            QPainterPath path;
+            path.addRect(state()->rectangleClip);
+
+            // flush the existing clip rectangle to the depth buffer
+            d->writeClip(qtVectorPathForPath(state()->matrix.inverted().map(path)), d->maxClip);
+        }
+
+        state()->clipTestEnabled = false;
+#ifndef QT_GL_NO_SCISSOR_TEST
+        QRect oldRectangleClip = state()->rectangleClip;
+
+        state()->rectangleClip = state()->rectangleClip.united(pathRect);
+        d->updateClipScissorTest();
+
+        QRegion extendRegion = QRegion(state()->rectangleClip) - oldRectangleClip;
+
+        if (!extendRegion.isEmpty()) {
+            QPainterPath extendPath;
+            extendPath.addRegion(extendRegion);
+
+            // first clear the depth buffer in the extended region
+            d->writeClip(qtVectorPathForPath(state()->matrix.inverted().map(extendPath)), 0);
+        }
+#endif
+        // now write the clip path
+        d->writeClip(path, d->maxClip);
+        state()->canRestoreClip = false;
+        state()->currentClip = d->maxClip;
+        state()->clipTestEnabled = true;
+        break;
+        }
+    default:
+        break;
+    }
+}
+
+void QGL2PaintEngineExPrivate::regenerateClip()
+{
+    systemStateChanged();
+    replayClipOperations();
+}
+
+void QGL2PaintEngineExPrivate::systemStateChanged()
+{
+    Q_Q(QGL2PaintEngineEx);
+
+    q->state()->clipChanged = true;
+
+    if (systemClip.isEmpty()) {
+        useSystemClip = false;
+    } else {
+        if (q->paintDevice()->devType() == QInternal::Widget && currentClipWidget) {
+            QWidgetPrivate *widgetPrivate = qt_widget_private(currentClipWidget->window());
+            useSystemClip = widgetPrivate->extra && widgetPrivate->extra->inRenderWithPainter;
+        } else {
+            useSystemClip = true;
+        }
+    }
+
+    q->state()->clipTestEnabled = false;
+    q->state()->needsClipBufferClear = true;
+
+    q->state()->currentClip = 1;
+    maxClip = 1;
+
+    q->state()->rectangleClip = useSystemClip ? systemClip.boundingRect() : QRect(0, 0, width, height);
+    updateClipScissorTest();
+
+    if (systemClip.rectCount() == 1) {
+        if (systemClip.boundingRect() == QRect(0, 0, width, height))
+            useSystemClip = false;
+#ifndef QT_GL_NO_SCISSOR_TEST
+        // scissoring takes care of the system clip
+        return;
+#endif
+    }
+
+    if (useSystemClip) {
+        clearClip(0);
+
+        QPainterPath path;
+        path.addRegion(systemClip);
+
+        q->state()->currentClip = 0;
+        writeClip(qtVectorPathForPath(q->state()->matrix.inverted().map(path)), 1);
+        q->state()->currentClip = 1;
+        q->state()->clipTestEnabled = true;
+    }
+}
+
+void QGL2PaintEngineEx::setState(QPainterState *new_state)
+{
+    //     qDebug("QGL2PaintEngineEx::setState()");
+
+    Q_D(QGL2PaintEngineEx);
+
+    QOpenGL2PaintEngineState *s = static_cast<QOpenGL2PaintEngineState *>(new_state);
+    QOpenGL2PaintEngineState *old_state = state();
+
+    QPaintEngineEx::setState(s);
+
+    if (s->isNew) {
+        // Newly created state object.  The call to setState()
+        // will either be followed by a call to begin(), or we are
+        // setting the state as part of a save().
+        s->isNew = false;
+        return;
+    }
+
+    // Setting the state as part of a restore().
+
+    if (old_state == s || old_state->renderHintsChanged)
+        renderHintsChanged();
+
+    if (old_state == s || old_state->matrixChanged)
+        d->matrixDirty = true;
+
+    if (old_state == s || old_state->compositionModeChanged)
+        d->compositionModeDirty = true;
+
+    if (old_state == s || old_state->opacityChanged)
+        d->opacityUniformDirty = true;
+
+    if (old_state == s || old_state->clipChanged) {
+        if (old_state && old_state != s && old_state->canRestoreClip) {
+            d->updateClipScissorTest();
+            glDepthFunc(GL_LEQUAL);
+        } else {
+            d->regenerateClip();
+        }
+    }
+}
+
+QPainterState *QGL2PaintEngineEx::createState(QPainterState *orig) const
+{
+    if (orig)
+        const_cast<QGL2PaintEngineEx *>(this)->ensureActive();
+
+    QOpenGL2PaintEngineState *s;
+    if (!orig)
+        s = new QOpenGL2PaintEngineState();
+    else
+        s = new QOpenGL2PaintEngineState(*static_cast<QOpenGL2PaintEngineState *>(orig));
+
+    s->matrixChanged = false;
+    s->compositionModeChanged = false;
+    s->opacityChanged = false;
+    s->renderHintsChanged = false;
+    s->clipChanged = false;
+
+    return s;
+}
+
+QOpenGL2PaintEngineState::QOpenGL2PaintEngineState(QOpenGL2PaintEngineState &other)
+    : QPainterState(other)
+{
+    isNew = true;
+    needsClipBufferClear = other.needsClipBufferClear;
+    clipTestEnabled = other.clipTestEnabled;
+    currentClip = other.currentClip;
+    canRestoreClip = other.canRestoreClip;
+    rectangleClip = other.rectangleClip;
+}
+
+QOpenGL2PaintEngineState::QOpenGL2PaintEngineState()
+{
+    isNew = true;
+    needsClipBufferClear = true;
+    clipTestEnabled = false;
+    canRestoreClip = true;
+}
+
+QOpenGL2PaintEngineState::~QOpenGL2PaintEngineState()
+{
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h b/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h
new file mode 100644
index 0000000000..f7ec5f5c2f
--- /dev/null
+++ b/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h
@@ -0,0 +1,332 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QGRAPHICSCONTEXT_OPENGL2_P_H
+#define QGRAPHICSCONTEXT_OPENGL2_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QDebug>
+
+#include <private/qpaintengineex_p.h>
+#include <private/qglengineshadermanager_p.h>
+#include <private/qgl2pexvertexarray_p.h>
+#include <private/qglpaintdevice_p.h>
+#include <private/qglpixmapfilter_p.h>
+#include <private/qfontengine_p.h>
+#include <private/qdatabuffer_p.h>
+#include <private/qtriangulatingstroker_p.h>
+
+enum EngineMode {
+    ImageDrawingMode,
+    TextDrawingMode,
+    BrushDrawingMode,
+    ImageArrayDrawingMode
+};
+
+QT_BEGIN_NAMESPACE
+
+#define GL_STENCIL_HIGH_BIT         GLuint(0x80)
+#define QT_BRUSH_TEXTURE_UNIT       GLuint(0)
+#define QT_IMAGE_TEXTURE_UNIT       GLuint(0) //Can be the same as brush texture unit
+#define QT_MASK_TEXTURE_UNIT        GLuint(1)
+#define QT_BACKGROUND_TEXTURE_UNIT  GLuint(2)
+
+class QGL2PaintEngineExPrivate;
+
+
+class QOpenGL2PaintEngineState : public QPainterState
+{
+public:
+    QOpenGL2PaintEngineState(QOpenGL2PaintEngineState &other);
+    QOpenGL2PaintEngineState();
+    ~QOpenGL2PaintEngineState();
+
+    uint isNew : 1;
+    uint needsClipBufferClear : 1;
+    uint clipTestEnabled : 1;
+    uint canRestoreClip : 1;
+    uint matrixChanged : 1;
+    uint compositionModeChanged : 1;
+    uint opacityChanged : 1;
+    uint renderHintsChanged : 1;
+    uint clipChanged : 1;
+    uint currentClip : 8;
+
+    QRect rectangleClip;
+};
+
+class Q_OPENGL_EXPORT QGL2PaintEngineEx : public QPaintEngineEx
+{
+    Q_DECLARE_PRIVATE(QGL2PaintEngineEx)
+public:
+    QGL2PaintEngineEx();
+    ~QGL2PaintEngineEx();
+
+    bool begin(QPaintDevice *device);
+    void ensureActive();
+    bool end();
+
+    virtual void clipEnabledChanged();
+    virtual void penChanged();
+    virtual void brushChanged();
+    virtual void brushOriginChanged();
+    virtual void opacityChanged();
+    virtual void compositionModeChanged();
+    virtual void renderHintsChanged();
+    virtual void transformChanged();
+
+    virtual void drawPixmap(const QRectF &r, const QPixmap &pm, const QRectF &sr);
+    virtual void drawPixmapFragments(const QPainter::PixmapFragment *fragments, int fragmentCount, const QPixmap &pixmap,
+                                     QPainter::PixmapFragmentHints hints);
+    virtual void drawImage(const QRectF &r, const QImage &pm, const QRectF &sr,
+                           Qt::ImageConversionFlags flags = Qt::AutoColor);
+    virtual void drawTextItem(const QPointF &p, const QTextItem &textItem);
+    virtual void fill(const QVectorPath &path, const QBrush &brush);
+    virtual void stroke(const QVectorPath &path, const QPen &pen);
+    virtual void clip(const QVectorPath &path, Qt::ClipOperation op);
+
+    virtual void drawStaticTextItem(QStaticTextItem *textItem);
+
+    bool drawTexture(const QRectF &r, GLuint textureId, const QSize &size, const QRectF &sr);
+
+    Type type() const { return OpenGL2; }
+
+    virtual void setState(QPainterState *s);
+    virtual QPainterState *createState(QPainterState *orig) const;
+    inline QOpenGL2PaintEngineState *state() {
+        return static_cast<QOpenGL2PaintEngineState *>(QPaintEngineEx::state());
+    }
+    inline const QOpenGL2PaintEngineState *state() const {
+        return static_cast<const QOpenGL2PaintEngineState *>(QPaintEngineEx::state());
+    }
+
+    void beginNativePainting();
+    void endNativePainting();
+
+    void invalidateState();
+
+    QPixmapFilter *pixmapFilter(int type, const QPixmapFilter *prototype);
+
+    void setRenderTextActive(bool);
+
+    bool isNativePaintingActive() const;
+private:
+    Q_DISABLE_COPY(QGL2PaintEngineEx)
+};
+
+class QGL2PaintEngineExPrivate : public QPaintEngineExPrivate
+{
+    Q_DECLARE_PUBLIC(QGL2PaintEngineEx)
+public:
+    enum StencilFillMode {
+        OddEvenFillMode,
+        WindingFillMode,
+        TriStripStrokeFillMode
+    };
+
+    QGL2PaintEngineExPrivate(QGL2PaintEngineEx *q_ptr) :
+            q(q_ptr),
+            shaderManager(0),
+            width(0), height(0),
+            ctx(0),
+            useSystemClip(true),
+            elementIndicesVBOId(0),
+            opacityArray(0),
+            snapToPixelGrid(false),
+            nativePaintingActive(false),
+            inverseScale(1),
+            lastMaskTextureUsed(0)
+    { }
+
+    ~QGL2PaintEngineExPrivate();
+
+    void updateBrushTexture();
+    void updateBrushUniforms();
+    void updateMatrix();
+    void updateCompositionMode();
+    void updateTextureFilter(GLenum target, GLenum wrapMode, bool smoothPixmapTransform, GLuint id = -1);
+
+    void resetGLState();
+
+    // fill, stroke, drawTexture, drawPixmaps & drawCachedGlyphs are the main rendering entry-points,
+    // however writeClip can also be thought of as en entry point as it does similar things.
+    void fill(const QVectorPath &path);
+    void stroke(const QVectorPath &path, const QPen &pen);
+    void drawTexture(const QGLRect& dest, const QGLRect& src, const QSize &textureSize, bool opaque, bool pattern = false);
+    void drawPixmapFragments(const QPainter::PixmapFragment *fragments, int fragmentCount, const QPixmap &pixmap,
+                             QPainter::PixmapFragmentHints hints);
+    void drawCachedGlyphs(QFontEngineGlyphCache::Type glyphType, QStaticTextItem *staticTextItem);
+
+    // Calls glVertexAttributePointer if the pointer has changed
+    inline void setVertexAttributePointer(unsigned int arrayIndex, const GLfloat *pointer);
+
+    // draws whatever is in the vertex array:
+    void drawVertexArrays(const float *data, int *stops, int stopCount, GLenum primitive);
+    void drawVertexArrays(QGL2PEXVertexArray &vertexArray, GLenum primitive) {
+        drawVertexArrays((const float *) vertexArray.data(), vertexArray.stops(), vertexArray.stopCount(), primitive);
+    }
+
+    // Composites the bounding rect onto dest buffer:
+    void composite(const QGLRect& boundingRect);
+
+    // Calls drawVertexArrays to render into stencil buffer:
+    void fillStencilWithVertexArray(const float *data, int count, int *stops, int stopCount, const QGLRect &bounds, StencilFillMode mode);
+    void fillStencilWithVertexArray(QGL2PEXVertexArray& vertexArray, bool useWindingFill) {
+        fillStencilWithVertexArray((const float *) vertexArray.data(), 0, vertexArray.stops(), vertexArray.stopCount(),
+                                   vertexArray.boundingRect(),
+                                   useWindingFill ? WindingFillMode : OddEvenFillMode);
+    }
+
+    void setBrush(const QBrush& brush);
+    void transferMode(EngineMode newMode);
+    bool prepareForDraw(bool srcPixelsAreOpaque); // returns true if the program has changed
+    inline void useSimpleShader();
+    inline GLuint location(const QGLEngineShaderManager::Uniform uniform) {
+        return shaderManager->getUniformLocation(uniform);
+    }
+
+    void clearClip(uint value);
+    void writeClip(const QVectorPath &path, uint value);
+    void resetClipIfNeeded();
+
+    void updateClipScissorTest();
+    void setScissor(const QRect &rect);
+    void regenerateClip();
+    void systemStateChanged();
+
+
+    static QGLEngineShaderManager* shaderManagerForEngine(QGL2PaintEngineEx *engine) { return engine->d_func()->shaderManager; }
+    static QGL2PaintEngineExPrivate *getData(QGL2PaintEngineEx *engine) { return engine->d_func(); }
+    static void cleanupVectorPath(QPaintEngineEx *engine, void *data);
+
+
+    QGL2PaintEngineEx* q;
+    QGLEngineShaderManager* shaderManager;
+    QGLPaintDevice* device;
+    int width, height;
+    QGLContext *ctx;
+    EngineMode mode;
+    QFontEngineGlyphCache::Type glyphCacheType;
+
+    // Dirty flags
+    bool matrixDirty; // Implies matrix uniforms are also dirty
+    bool compositionModeDirty;
+    bool brushTextureDirty;
+    bool brushUniformsDirty;
+    bool opacityUniformDirty;
+    bool matrixUniformDirty;
+
+    bool stencilClean; // Has the stencil not been used for clipping so far?
+    bool useSystemClip;
+    QRegion dirtyStencilRegion;
+    QRect currentScissorBounds;
+    uint maxClip;
+
+    QBrush currentBrush; // May not be the state's brush!
+    const QBrush noBrush;
+
+    QPixmap currentBrushPixmap;
+
+    QGL2PEXVertexArray vertexCoordinateArray;
+    QGL2PEXVertexArray textureCoordinateArray;
+    QVector<GLushort> elementIndices;
+    GLuint elementIndicesVBOId;
+    QDataBuffer<GLfloat> opacityArray;
+    GLfloat staticVertexCoordinateArray[8];
+    GLfloat staticTextureCoordinateArray[8];
+
+    bool snapToPixelGrid;
+    bool nativePaintingActive;
+    GLfloat pmvMatrix[3][3];
+    GLfloat inverseScale;
+
+    GLuint lastTextureUsed;
+    GLuint lastMaskTextureUsed;
+
+    bool needsSync;
+    bool multisamplingAlwaysEnabled;
+
+    GLfloat depthRange[2];
+
+    float textureInvertedY;
+
+    QTriangulatingStroker stroker;
+    QDashedStrokeProcessor dasher;
+
+    QScopedPointer<QPixmapFilter> convolutionFilter;
+    QScopedPointer<QPixmapFilter> colorizeFilter;
+    QScopedPointer<QPixmapFilter> blurFilter;
+    QScopedPointer<QPixmapFilter> dropShadowFilter;
+
+    QSet<QVectorPath::CacheEntry *> pathCaches;
+    QVector<GLuint> unusedVBOSToClean;
+    QVector<GLuint> unusedIBOSToClean;
+
+    const GLfloat *vertexAttribPointers[3];
+};
+
+
+void QGL2PaintEngineExPrivate::setVertexAttributePointer(unsigned int arrayIndex, const GLfloat *pointer)
+{
+    Q_ASSERT(arrayIndex < 3);
+    if (pointer == vertexAttribPointers[arrayIndex])
+        return;
+
+    vertexAttribPointers[arrayIndex] = pointer;
+    if (arrayIndex == QT_OPACITY_ATTR)
+        glVertexAttribPointer(arrayIndex, 1, GL_FLOAT, GL_FALSE, 0, pointer);
+    else
+        glVertexAttribPointer(arrayIndex, 2, GL_FLOAT, GL_FALSE, 0, pointer);
+}
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/opengl/gl2paintengineex/qtextureglyphcache_gl.cpp b/src/opengl/gl2paintengineex/qtextureglyphcache_gl.cpp
new file mode 100644
index 0000000000..c867d60a72
--- /dev/null
+++ b/src/opengl/gl2paintengineex/qtextureglyphcache_gl.cpp
@@ -0,0 +1,396 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qtextureglyphcache_gl_p.h"
+#include "qpaintengineex_opengl2_p.h"
+#include "private/qglengineshadersource_p.h"
+
+#if defined QT_OPENGL_ES_2 && !defined(QT_NO_EGL)
+#include "private/qeglcontext_p.h"
+#endif
+
+QT_BEGIN_NAMESPACE
+
+#ifdef Q_WS_WIN
+extern Q_GUI_EXPORT bool qt_cleartype_enabled;
+#endif
+
+QBasicAtomicInt qgltextureglyphcache_serial_number = Q_BASIC_ATOMIC_INITIALIZER(1);
+
+QGLTextureGlyphCache::QGLTextureGlyphCache(const QGLContext *context, QFontEngineGlyphCache::Type type, const QTransform &matrix)
+    : QImageTextureGlyphCache(type, matrix), QGLContextGroupResourceBase()
+    , ctx(0)
+    , pex(0)
+    , m_blitProgram(0)
+    , m_filterMode(Nearest)
+    , m_serialNumber(qgltextureglyphcache_serial_number.fetchAndAddRelaxed(1))
+{
+#ifdef QT_GL_TEXTURE_GLYPH_CACHE_DEBUG
+    qDebug(" -> QGLTextureGlyphCache() %p for context %p.", this, ctx);
+#endif
+    setContext(context);
+
+    m_vertexCoordinateArray[0] = -1.0f;
+    m_vertexCoordinateArray[1] = -1.0f;
+    m_vertexCoordinateArray[2] =  1.0f;
+    m_vertexCoordinateArray[3] = -1.0f;
+    m_vertexCoordinateArray[4] =  1.0f;
+    m_vertexCoordinateArray[5] =  1.0f;
+    m_vertexCoordinateArray[6] = -1.0f;
+    m_vertexCoordinateArray[7] =  1.0f;
+
+    m_textureCoordinateArray[0] = 0.0f;
+    m_textureCoordinateArray[1] = 0.0f;
+    m_textureCoordinateArray[2] = 1.0f;
+    m_textureCoordinateArray[3] = 0.0f;
+    m_textureCoordinateArray[4] = 1.0f;
+    m_textureCoordinateArray[5] = 1.0f;
+    m_textureCoordinateArray[6] = 0.0f;
+    m_textureCoordinateArray[7] = 1.0f;
+}
+
+QGLTextureGlyphCache::~QGLTextureGlyphCache()
+{
+#ifdef QT_GL_TEXTURE_GLYPH_CACHE_DEBUG
+    qDebug(" -> ~QGLTextureGlyphCache() %p.", this);
+#endif
+    delete m_blitProgram;
+}
+
+void QGLTextureGlyphCache::setContext(const QGLContext *context)
+{
+    ctx = context;
+    m_h = 0;
+}
+
+void QGLTextureGlyphCache::createTextureData(int width, int height)
+{
+    if (ctx == 0) {
+        qWarning("QGLTextureGlyphCache::createTextureData: Called with no context");
+        return;
+    }
+
+    // create in QImageTextureGlyphCache baseclass is meant to be called
+    // only to create the initial image and does not preserve the content,
+    // so we don't call when this function is called from resize.
+    if (ctx->d_ptr->workaround_brokenFBOReadBack && image().isNull())
+        QImageTextureGlyphCache::createTextureData(width, height);
+
+    // Make the lower glyph texture size 16 x 16.
+    if (width < 16)
+        width = 16;
+    if (height < 16)
+        height = 16;
+
+    QGLGlyphTexture *glyphTexture = m_textureResource.value(ctx);
+    glGenTextures(1, &glyphTexture->m_texture);
+    glBindTexture(GL_TEXTURE_2D, glyphTexture->m_texture);
+
+    glyphTexture->m_width = width;
+    glyphTexture->m_height = height;
+
+    if (m_type == QFontEngineGlyphCache::Raster_RGBMask) {
+        QVarLengthArray<uchar> data(width * height * 4);
+        for (int i = 0; i < data.size(); ++i)
+            data[i] = 0;
+        glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, &data[0]);
+    } else {
+        QVarLengthArray<uchar> data(width * height);
+        for (int i = 0; i < data.size(); ++i)
+            data[i] = 0;
+        glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, width, height, 0, GL_ALPHA, GL_UNSIGNED_BYTE, &data[0]);
+    }
+
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+    m_filterMode = Nearest;
+}
+
+void QGLTextureGlyphCache::resizeTextureData(int width, int height)
+{
+    if (ctx == 0) {
+        qWarning("QGLTextureGlyphCache::resizeTextureData: Called with no context");
+        return;
+    }
+    QGLGlyphTexture *glyphTexture = m_textureResource.value(ctx);
+
+    int oldWidth = glyphTexture->m_width;
+    int oldHeight = glyphTexture->m_height;
+
+    // Make the lower glyph texture size 16 x 16.
+    if (width < 16)
+        width = 16;
+    if (height < 16)
+        height = 16;
+
+    GLuint oldTexture = glyphTexture->m_texture;
+    createTextureData(width, height);
+
+    if (ctx->d_ptr->workaround_brokenFBOReadBack) {
+        QImageTextureGlyphCache::resizeTextureData(width, height);
+        Q_ASSERT(image().depth() == 8);
+        glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, oldHeight, GL_ALPHA, GL_UNSIGNED_BYTE, image().constBits());
+        glDeleteTextures(1, &oldTexture);
+        return;
+    }
+
+    // ### the QTextureGlyphCache API needs to be reworked to allow
+    // ### resizeTextureData to fail
+
+    glBindFramebuffer(GL_FRAMEBUFFER_EXT, glyphTexture->m_fbo);
+
+    GLuint tmp_texture;
+    glGenTextures(1, &tmp_texture);
+    glBindTexture(GL_TEXTURE_2D, tmp_texture);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, oldWidth, oldHeight, 0,
+                 GL_RGBA, GL_UNSIGNED_BYTE, NULL);
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+    m_filterMode = Nearest;
+    glBindTexture(GL_TEXTURE_2D, 0);
+    glFramebufferTexture2D(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
+                           GL_TEXTURE_2D, tmp_texture, 0);
+
+    glActiveTexture(GL_TEXTURE0 + QT_IMAGE_TEXTURE_UNIT);
+    glBindTexture(GL_TEXTURE_2D, oldTexture);
+
+    if (pex != 0)
+        pex->transferMode(BrushDrawingMode);
+
+    glDisable(GL_STENCIL_TEST);
+    glDisable(GL_DEPTH_TEST);
+    glDisable(GL_SCISSOR_TEST);
+    glDisable(GL_BLEND);
+
+    glViewport(0, 0, oldWidth, oldHeight);
+
+    QGLShaderProgram *blitProgram = 0;
+    if (pex == 0) {
+        if (m_blitProgram == 0) {
+            m_blitProgram = new QGLShaderProgram(ctx);
+
+            {
+                QString source;
+                source.append(QLatin1String(qglslMainWithTexCoordsVertexShader));
+                source.append(QLatin1String(qglslUntransformedPositionVertexShader));
+
+                QGLShader *vertexShader = new QGLShader(QGLShader::Vertex, m_blitProgram);
+                vertexShader->compileSourceCode(source);
+
+                m_blitProgram->addShader(vertexShader);
+            }
+
+            {
+                QString source;
+                source.append(QLatin1String(qglslMainFragmentShader));
+                source.append(QLatin1String(qglslImageSrcFragmentShader));
+
+                QGLShader *fragmentShader = new QGLShader(QGLShader::Fragment, m_blitProgram);
+                fragmentShader->compileSourceCode(source);
+
+                m_blitProgram->addShader(fragmentShader);
+            }
+
+            m_blitProgram->bindAttributeLocation("vertexCoordsArray", QT_VERTEX_COORDS_ATTR);
+            m_blitProgram->bindAttributeLocation("textureCoordArray", QT_TEXTURE_COORDS_ATTR);
+
+            m_blitProgram->link();
+        }
+
+        glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, m_vertexCoordinateArray);
+        glVertexAttribPointer(QT_TEXTURE_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, m_textureCoordinateArray);
+
+        m_blitProgram->bind();
+        m_blitProgram->enableAttributeArray(int(QT_VERTEX_COORDS_ATTR));
+        m_blitProgram->enableAttributeArray(int(QT_TEXTURE_COORDS_ATTR));
+        m_blitProgram->disableAttributeArray(int(QT_OPACITY_ATTR));
+
+        blitProgram = m_blitProgram;
+
+    } else {
+        pex->setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, m_vertexCoordinateArray);
+        pex->setVertexAttributePointer(QT_TEXTURE_COORDS_ATTR, m_textureCoordinateArray);
+
+        pex->shaderManager->useBlitProgram();
+        blitProgram = pex->shaderManager->blitProgram();
+    }
+
+    blitProgram->setUniformValue("imageTexture", QT_IMAGE_TEXTURE_UNIT);
+
+    glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
+
+    glBindTexture(GL_TEXTURE_2D, glyphTexture->m_texture);
+
+    glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, oldWidth, oldHeight);
+
+    glFramebufferRenderbuffer(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
+                              GL_RENDERBUFFER_EXT, 0);
+    glDeleteTextures(1, &tmp_texture);
+    glDeleteTextures(1, &oldTexture);
+
+    glBindFramebuffer(GL_FRAMEBUFFER_EXT, ctx->d_ptr->current_fbo);
+
+    if (pex != 0) {
+        glViewport(0, 0, pex->width, pex->height);
+        pex->updateClipScissorTest();
+    }
+}
+
+void QGLTextureGlyphCache::fillTexture(const Coord &c, glyph_t glyph, QFixed subPixelPosition)
+{
+    if (ctx == 0) {
+        qWarning("QGLTextureGlyphCache::fillTexture: Called with no context");
+        return;
+    }
+
+    QGLGlyphTexture *glyphTexture = m_textureResource.value(ctx);
+    if (ctx->d_ptr->workaround_brokenFBOReadBack) {
+        QImageTextureGlyphCache::fillTexture(c, glyph, subPixelPosition);
+
+        glBindTexture(GL_TEXTURE_2D, glyphTexture->m_texture);
+        const QImage &texture = image();
+        const uchar *bits = texture.constBits();
+        bits += c.y * texture.bytesPerLine() + c.x;
+        for (int i=0; i<c.h; ++i) {
+            glTexSubImage2D(GL_TEXTURE_2D, 0, c.x, c.y + i, c.w, 1, GL_ALPHA, GL_UNSIGNED_BYTE, bits);
+            bits += texture.bytesPerLine();
+        }
+        return;
+    }
+
+    QImage mask = textureMapForGlyph(glyph, subPixelPosition);
+    const int maskWidth = mask.width();
+    const int maskHeight = mask.height();
+
+    if (mask.format() == QImage::Format_Mono) {
+        mask = mask.convertToFormat(QImage::Format_Indexed8);
+        for (int y = 0; y < maskHeight; ++y) {
+            uchar *src = (uchar *) mask.scanLine(y);
+            for (int x = 0; x < maskWidth; ++x)
+                src[x] = -src[x]; // convert 0 and 1 into 0 and 255
+        }
+    } else if (mask.format() == QImage::Format_RGB32) {
+        // Make the alpha component equal to the average of the RGB values.
+        // This is needed when drawing sub-pixel antialiased text on translucent targets.
+        for (int y = 0; y < maskHeight; ++y) {
+            quint32 *src = (quint32 *) mask.scanLine(y);
+            for (int x = 0; x < maskWidth; ++x) {
+                uchar r = src[x] >> 16;
+                uchar g = src[x] >> 8;
+                uchar b = src[x];
+                quint32 avg = (quint32(r) + quint32(g) + quint32(b) + 1) / 3; // "+1" for rounding.
+                src[x] = (src[x] & 0x00ffffff) | (avg << 24);
+            }
+        }
+    }
+
+    glBindTexture(GL_TEXTURE_2D, glyphTexture->m_texture);
+    if (mask.format() == QImage::Format_RGB32) {
+        glTexSubImage2D(GL_TEXTURE_2D, 0, c.x, c.y, maskWidth, maskHeight, GL_BGRA, GL_UNSIGNED_BYTE, mask.bits());
+    } else {
+        // glTexSubImage2D() might cause some garbage to appear in the texture if the mask width is
+        // not a multiple of four bytes. The bug appeared on a computer with 32-bit Windows Vista
+        // and nVidia GeForce 8500GT. GL_UNPACK_ALIGNMENT is set to four bytes, 'mask' has a
+        // multiple of four bytes per line, and most of the glyph shows up correctly in the
+        // texture, which makes me think that this is a driver bug.
+        // One workaround is to make sure the mask width is a multiple of four bytes, for instance
+        // by converting it to a format with four bytes per pixel. Another is to copy one line at a
+        // time.
+
+        if (!ctx->d_ptr->workaround_brokenAlphaTexSubImage_init) {
+            // don't know which driver versions exhibit this bug, so be conservative for now
+            const QByteArray versionString(reinterpret_cast<const char*>(glGetString(GL_VERSION)));
+            ctx->d_ptr->workaround_brokenAlphaTexSubImage = versionString.indexOf("NVIDIA") >= 0;
+            ctx->d_ptr->workaround_brokenAlphaTexSubImage_init = true;
+        }
+
+        if (ctx->d_ptr->workaround_brokenAlphaTexSubImage) {
+            for (int i = 0; i < maskHeight; ++i)
+                glTexSubImage2D(GL_TEXTURE_2D, 0, c.x, c.y + i, maskWidth, 1, GL_ALPHA, GL_UNSIGNED_BYTE, mask.scanLine(i));
+        } else {
+            glTexSubImage2D(GL_TEXTURE_2D, 0, c.x, c.y, maskWidth, maskHeight, GL_ALPHA, GL_UNSIGNED_BYTE, mask.bits());
+        }
+    }
+}
+
+int QGLTextureGlyphCache::glyphPadding() const
+{
+    return 1;
+}
+
+int QGLTextureGlyphCache::maxTextureWidth() const
+{
+    if (ctx == 0)
+        return QImageTextureGlyphCache::maxTextureWidth();
+    else
+        return ctx->d_ptr->maxTextureSize();
+}
+
+int QGLTextureGlyphCache::maxTextureHeight() const
+{
+    if (ctx == 0)
+        return QImageTextureGlyphCache::maxTextureHeight();
+
+    if (ctx->d_ptr->workaround_brokenTexSubImage)
+        return qMin(1024, ctx->d_ptr->maxTextureSize());
+    else
+        return ctx->d_ptr->maxTextureSize();
+}
+
+void QGLTextureGlyphCache::clear()
+{
+    if (ctx != 0) {
+        m_textureResource.cleanup(ctx);
+
+        m_w = 0;
+        m_h = 0;
+        m_cx = 0;
+        m_cy = 0;
+        m_currentRowHeight = 0;
+        coords.clear();
+    }
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/gl2paintengineex/qtextureglyphcache_gl_p.h b/src/opengl/gl2paintengineex/qtextureglyphcache_gl_p.h
new file mode 100644
index 0000000000..133289e81c
--- /dev/null
+++ b/src/opengl/gl2paintengineex/qtextureglyphcache_gl_p.h
@@ -0,0 +1,166 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QTEXTUREGLYPHCACHE_GL_P_H
+#define QTEXTUREGLYPHCACHE_GL_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of the QLibrary class.  This header file may change from
+// version to version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <private/qtextureglyphcache_p.h>
+#include <private/qgl_p.h>
+#include <qglshaderprogram.h>
+
+// #define QT_GL_TEXTURE_GLYPH_CACHE_DEBUG
+
+QT_BEGIN_NAMESPACE
+
+class QGL2PaintEngineExPrivate;
+
+struct QGLGlyphTexture
+{
+    QGLGlyphTexture(const QGLContext *ctx)
+        : m_width(0)
+        , m_height(0)
+    {
+        if (ctx && !ctx->d_ptr->workaround_brokenFBOReadBack)
+            glGenFramebuffers(1, &m_fbo);
+
+#ifdef QT_GL_TEXTURE_GLYPH_CACHE_DEBUG
+        qDebug(" -> QGLGlyphTexture() %p for context %p.", this, ctx);
+#endif
+    }
+
+    ~QGLGlyphTexture() {
+        const QGLContext *ctx = QGLContext::currentContext();
+#ifdef QT_GL_TEXTURE_GLYPH_CACHE_DEBUG
+        qDebug("~QGLGlyphTexture() %p for context %p.", this, ctx);
+#endif
+        // At this point, the context group is made current, so it's safe to
+        // release resources without a makeCurrent() call
+        if (ctx) {
+            if (!ctx->d_ptr->workaround_brokenFBOReadBack)
+                glDeleteFramebuffers(1, &m_fbo);
+            if (m_width || m_height)
+                glDeleteTextures(1, &m_texture);
+        }
+    }
+
+    GLuint m_texture;
+    GLuint m_fbo;
+    int m_width;
+    int m_height;
+};
+
+class Q_OPENGL_EXPORT QGLTextureGlyphCache : public QImageTextureGlyphCache, public QGLContextGroupResourceBase
+{
+public:
+    QGLTextureGlyphCache(const QGLContext *context, QFontEngineGlyphCache::Type type, const QTransform &matrix);
+    ~QGLTextureGlyphCache();
+
+    virtual void createTextureData(int width, int height);
+    virtual void resizeTextureData(int width, int height);
+    virtual void fillTexture(const Coord &c, glyph_t glyph, QFixed subPixelPosition);
+    virtual int glyphPadding() const;
+    virtual int maxTextureWidth() const;
+    virtual int maxTextureHeight() const;
+
+    inline GLuint texture() const {
+        QGLTextureGlyphCache *that = const_cast<QGLTextureGlyphCache *>(this);
+        QGLGlyphTexture *glyphTexture = that->m_textureResource.value(ctx);
+        return glyphTexture ? glyphTexture->m_texture : 0;
+    }
+
+    inline int width() const {
+        QGLTextureGlyphCache *that = const_cast<QGLTextureGlyphCache *>(this);
+        QGLGlyphTexture *glyphTexture = that->m_textureResource.value(ctx);
+        return glyphTexture ? glyphTexture->m_width : 0;
+    }
+    inline int height() const {
+        QGLTextureGlyphCache *that = const_cast<QGLTextureGlyphCache *>(this);
+        QGLGlyphTexture *glyphTexture = that->m_textureResource.value(ctx);
+        return glyphTexture ? glyphTexture->m_height : 0;
+    }
+
+    inline void setPaintEnginePrivate(QGL2PaintEngineExPrivate *p) { pex = p; }
+
+    void setContext(const QGLContext *context);
+    inline const QGLContext *context() const { return ctx; }
+
+    inline int serialNumber() const { return m_serialNumber; }
+
+    enum FilterMode {
+        Nearest,
+        Linear
+    };
+    FilterMode filterMode() const { return m_filterMode; }
+    void setFilterMode(FilterMode m) { m_filterMode = m; }
+
+    void clear();
+
+    void freeResource(void *) { ctx = 0; }
+
+private:
+    QGLContextGroupResource<QGLGlyphTexture> m_textureResource;
+
+    const QGLContext *ctx;
+    QGL2PaintEngineExPrivate *pex;
+    QGLShaderProgram *m_blitProgram;
+    FilterMode m_filterMode;
+
+    GLfloat m_vertexCoordinateArray[8];
+    GLfloat m_textureCoordinateArray[8];
+
+    int m_serialNumber;
+};
+
+QT_END_NAMESPACE
+
+#endif
+
diff --git a/src/opengl/gl2paintengineex/qtriangulatingstroker.cpp b/src/opengl/gl2paintengineex/qtriangulatingstroker.cpp
new file mode 100644
index 0000000000..f4e170d928
--- /dev/null
+++ b/src/opengl/gl2paintengineex/qtriangulatingstroker.cpp
@@ -0,0 +1,588 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qtriangulatingstroker_p.h"
+#include <qmath.h>
+
+QT_BEGIN_NAMESPACE
+
+#define CURVE_FLATNESS Q_PI / 8
+
+
+
+
+void QTriangulatingStroker::endCapOrJoinClosed(const qreal *start, const qreal *cur,
+                                               bool implicitClose, bool endsAtStart)
+{
+    if (endsAtStart) {
+        join(start + 2);
+    } else if (implicitClose) {
+        join(start);
+        lineTo(start);
+        join(start+2);
+    } else {
+        endCap(cur);
+    }
+    int count = m_vertices.size();
+
+    // Copy the (x, y) values because QDataBuffer::add(const float& t)
+    // may resize the buffer, which will leave t pointing at the
+    // previous buffer's memory region if we don't copy first.
+    float x = m_vertices.at(count-2);
+    float y = m_vertices.at(count-1);
+    m_vertices.add(x);
+    m_vertices.add(y);
+}
+
+
+void QTriangulatingStroker::process(const QVectorPath &path, const QPen &pen, const QRectF &)
+{
+    const qreal *pts = path.points();
+    const QPainterPath::ElementType *types = path.elements();
+    int count = path.elementCount();
+    if (count < 2)
+        return;
+
+    float realWidth = qpen_widthf(pen);
+    if (realWidth == 0)
+        realWidth = 1;
+
+    m_width = realWidth / 2;
+
+    bool cosmetic = pen.isCosmetic();
+    if (cosmetic) {
+        m_width = m_width * m_inv_scale;
+    }
+
+    m_join_style = qpen_joinStyle(pen);
+    m_cap_style = qpen_capStyle(pen);
+    m_vertices.reset();
+    m_miter_limit = pen.miterLimit() * qpen_widthf(pen);
+
+    // The curvyness is based on the notion that I originally wanted
+    // roughly one line segment pr 4 pixels. This may seem little, but
+    // because we sample at constantly incrementing B(t) E [0<t<1], we
+    // will get longer segments where the curvature is small and smaller
+    // segments when the curvature is high.
+    //
+    // To get a rough idea of the length of each curve, I pretend that
+    // the curve is a 90 degree arc, whose radius is
+    // qMax(curveBounds.width, curveBounds.height). Based on this
+    // logic we can estimate the length of the outline edges based on
+    // the radius + a pen width and adjusting for scale factors
+    // depending on if the pen is cosmetic or not.
+    //
+    // The curvyness value of PI/14 was based on,
+    // arcLength = 2*PI*r/4 = PI*r/2 and splitting length into somewhere
+    // between 3 and 8 where 5 seemed to be give pretty good results
+    // hence: Q_PI/14. Lower divisors will give more detail at the
+    // direct cost of performance.
+
+    // simplfy pens that are thin in device size (2px wide or less)
+    if (realWidth < 2.5 && (cosmetic || m_inv_scale == 1)) {
+        if (m_cap_style == Qt::RoundCap)
+            m_cap_style = Qt::SquareCap;
+        if (m_join_style == Qt::RoundJoin)
+            m_join_style = Qt::MiterJoin;
+        m_curvyness_add = 0.5;
+        m_curvyness_mul = CURVE_FLATNESS / m_inv_scale;
+        m_roundness = 1;
+    } else if (cosmetic) {
+        m_curvyness_add = realWidth / 2;
+        m_curvyness_mul = CURVE_FLATNESS;
+        m_roundness = qMax<int>(4, realWidth * CURVE_FLATNESS);
+    } else {
+        m_curvyness_add = m_width;
+        m_curvyness_mul = CURVE_FLATNESS / m_inv_scale;
+        m_roundness = qMax<int>(4, realWidth * m_curvyness_mul);
+    }
+
+    // Over this level of segmentation, there doesn't seem to be any
+    // benefit, even for huge penWidth
+    if (m_roundness > 24)
+        m_roundness = 24;
+
+    m_sin_theta = qFastSin(Q_PI / m_roundness);
+    m_cos_theta = qFastCos(Q_PI / m_roundness);
+
+    const qreal *endPts = pts + (count<<1);
+    const qreal *startPts = 0;
+
+    Qt::PenCapStyle cap = m_cap_style;
+
+    if (!types) {
+        // skip duplicate points
+        while((pts + 2) < endPts && pts[0] == pts[2] && pts[1] == pts[3])
+            pts += 2;
+        if ((pts + 2) == endPts)
+            return;
+
+        startPts = pts;
+
+        bool endsAtStart = startPts[0] == *(endPts-2) && startPts[1] == *(endPts-1);
+
+        if (endsAtStart || path.hasImplicitClose())
+            m_cap_style = Qt::FlatCap;
+        moveTo(pts);
+        m_cap_style = cap;
+        pts += 2;
+        lineTo(pts);
+        pts += 2;
+        while (pts < endPts) {
+            if (m_cx != pts[0] || m_cy != pts[1]) {
+                join(pts);
+                lineTo(pts);
+            }
+            pts += 2;
+        }
+
+        endCapOrJoinClosed(startPts, pts-2, path.hasImplicitClose(), endsAtStart);
+
+    } else {
+        bool endsAtStart = false;
+        while (pts < endPts) {
+            switch (*types) {
+            case QPainterPath::MoveToElement: {
+                if (pts != path.points())
+                    endCapOrJoinClosed(startPts, pts-2, path.hasImplicitClose(), endsAtStart);
+
+                startPts = pts;
+                int end = (endPts - pts) / 2;
+                int i = 2; // Start looking to ahead since we never have two moveto's in a row
+                while (i<end && types[i] != QPainterPath::MoveToElement) {
+                    ++i;
+                }
+                endsAtStart = startPts[0] == pts[i*2 - 2] && startPts[1] == pts[i*2 - 1];
+                if (endsAtStart || path.hasImplicitClose())
+                    m_cap_style = Qt::FlatCap;
+
+                moveTo(pts);
+                m_cap_style = cap;
+                pts+=2;
+                ++types;
+                break; }
+            case QPainterPath::LineToElement:
+                if (*(types - 1) != QPainterPath::MoveToElement)
+                    join(pts);
+                lineTo(pts);
+                pts+=2;
+                ++types;
+                break;
+            case QPainterPath::CurveToElement:
+                if (*(types - 1) != QPainterPath::MoveToElement)
+                    join(pts);
+                cubicTo(pts);
+                pts+=6;
+                types+=3;
+                break;
+            default:
+                Q_ASSERT(false);
+                break;
+            }
+        }
+
+        endCapOrJoinClosed(startPts, pts-2, path.hasImplicitClose(), endsAtStart);
+    }
+}
+
+void QTriangulatingStroker::moveTo(const qreal *pts)
+{
+    m_cx = pts[0];
+    m_cy = pts[1];
+
+    float x2 = pts[2];
+    float y2 = pts[3];
+    normalVector(m_cx, m_cy, x2, y2, &m_nvx, &m_nvy);
+
+
+    // To acheive jumps we insert zero-area tringles. This is done by
+    // adding two identical points in both the end of previous strip
+    // and beginning of next strip
+    bool invisibleJump = m_vertices.size();
+
+    switch (m_cap_style) {
+    case Qt::FlatCap:
+        if (invisibleJump) {
+            m_vertices.add(m_cx + m_nvx);
+            m_vertices.add(m_cy + m_nvy);
+        }
+        break;
+    case Qt::SquareCap: {
+        float sx = m_cx - m_nvy;
+        float sy = m_cy + m_nvx;
+        if (invisibleJump) {
+            m_vertices.add(sx + m_nvx);
+            m_vertices.add(sy + m_nvy);
+        }
+        emitLineSegment(sx, sy, m_nvx, m_nvy);
+        break; }
+    case Qt::RoundCap: {
+        QVarLengthArray<float> points;
+        arcPoints(m_cx, m_cy, m_cx + m_nvx, m_cy + m_nvy, m_cx - m_nvx, m_cy - m_nvy, points);
+        m_vertices.resize(m_vertices.size() + points.size() + 2 * int(invisibleJump));
+        int count = m_vertices.size();
+        int front = 0;
+        int end = points.size() / 2;
+        while (front != end) {
+            m_vertices.at(--count) = points[2 * end - 1];
+            m_vertices.at(--count) = points[2 * end - 2];
+            --end;
+            if (front == end)
+                break;
+            m_vertices.at(--count) = points[2 * front + 1];
+            m_vertices.at(--count) = points[2 * front + 0];
+            ++front;
+        }
+
+        if (invisibleJump) {
+            m_vertices.at(count - 1) = m_vertices.at(count + 1);
+            m_vertices.at(count - 2) = m_vertices.at(count + 0);
+        }
+        break; }
+    default: break; // ssssh gcc...
+    }
+    emitLineSegment(m_cx, m_cy, m_nvx, m_nvy);
+}
+
+void QTriangulatingStroker::cubicTo(const qreal *pts)
+{
+    const QPointF *p = (const QPointF *) pts;
+    QBezier bezier = QBezier::fromPoints(*(p - 1), p[0], p[1], p[2]);
+
+    QRectF bounds = bezier.bounds();
+    float rad = qMax(bounds.width(), bounds.height());
+    int threshold = qMin<float>(64, (rad + m_curvyness_add) * m_curvyness_mul);
+    if (threshold < 4)
+        threshold = 4;
+    qreal threshold_minus_1 = threshold - 1;
+    float vx, vy;
+
+    float cx = m_cx, cy = m_cy;
+    float x, y;
+
+    for (int i=1; i<threshold; ++i) {
+        qreal t = qreal(i) / threshold_minus_1;
+        QPointF p = bezier.pointAt(t);
+        x = p.x();
+        y = p.y();
+
+        normalVector(cx, cy, x, y, &vx, &vy);
+
+        emitLineSegment(x, y, vx, vy);
+
+        cx = x;
+        cy = y;
+    }
+
+    m_cx = cx;
+    m_cy = cy;
+
+    m_nvx = vx;
+    m_nvy = vy;
+}
+
+void QTriangulatingStroker::join(const qreal *pts)
+{
+    // Creates a join to the next segment (m_cx, m_cy) -> (pts[0], pts[1])
+    normalVector(m_cx, m_cy, pts[0], pts[1], &m_nvx, &m_nvy);
+
+    switch (m_join_style) {
+    case Qt::BevelJoin:
+        break;
+    case Qt::SvgMiterJoin:
+    case Qt::MiterJoin: {
+        // Find out on which side the join should be.
+        int count = m_vertices.size();
+        float prevNvx = m_vertices.at(count - 2) - m_cx;
+        float prevNvy = m_vertices.at(count - 1) - m_cy;
+        float xprod = prevNvx * m_nvy - prevNvy * m_nvx;
+        float px, py, qx, qy;
+
+        // If the segments are parallel, use bevel join.
+        if (qFuzzyIsNull(xprod))
+            break;
+
+        // Find the corners of the previous and next segment to join.
+        if (xprod < 0) {
+            px = m_vertices.at(count - 2);
+            py = m_vertices.at(count - 1);
+            qx = m_cx - m_nvx;
+            qy = m_cy - m_nvy;
+        } else {
+            px = m_vertices.at(count - 4);
+            py = m_vertices.at(count - 3);
+            qx = m_cx + m_nvx;
+            qy = m_cy + m_nvy;
+        }
+
+        // Find intersection point.
+        float pu = px * prevNvx + py * prevNvy;
+        float qv = qx * m_nvx + qy * m_nvy;
+        float ix = (m_nvy * pu - prevNvy * qv) / xprod;
+        float iy = (prevNvx * qv - m_nvx * pu) / xprod;
+
+        // Check that the distance to the intersection point is less than the miter limit.
+        if ((ix - px) * (ix - px) + (iy - py) * (iy - py) <= m_miter_limit * m_miter_limit) {
+            m_vertices.add(ix);
+            m_vertices.add(iy);
+            m_vertices.add(ix);
+            m_vertices.add(iy);
+        }
+        // else
+        // Do a plain bevel join if the miter limit is exceeded or if
+        // the lines are parallel. This is not what the raster
+        // engine's stroker does, but it is both faster and similar to
+        // what some other graphics API's do.
+
+        break; }
+    case Qt::RoundJoin: {
+        QVarLengthArray<float> points;
+        int count = m_vertices.size();
+        float prevNvx = m_vertices.at(count - 2) - m_cx;
+        float prevNvy = m_vertices.at(count - 1) - m_cy;
+        if (m_nvx * prevNvy - m_nvy * prevNvx < 0) {
+            arcPoints(0, 0, m_nvx, m_nvy, -prevNvx, -prevNvy, points);
+            for (int i = points.size() / 2; i > 0; --i)
+                emitLineSegment(m_cx, m_cy, points[2 * i - 2], points[2 * i - 1]);
+        } else {
+            arcPoints(0, 0, -prevNvx, -prevNvy, m_nvx, m_nvy, points);
+            for (int i = 0; i < points.size() / 2; ++i)
+                emitLineSegment(m_cx, m_cy, points[2 * i + 0], points[2 * i + 1]);
+        }
+        break; }
+    default: break; // gcc warn--
+    }
+
+    emitLineSegment(m_cx, m_cy, m_nvx, m_nvy);
+}
+
+void QTriangulatingStroker::endCap(const qreal *)
+{
+    switch (m_cap_style) {
+    case Qt::FlatCap:
+        break;
+    case Qt::SquareCap:
+        emitLineSegment(m_cx + m_nvy, m_cy - m_nvx, m_nvx, m_nvy);
+        break;
+    case Qt::RoundCap: {
+        QVarLengthArray<float> points;
+        int count = m_vertices.size();
+        arcPoints(m_cx, m_cy, m_vertices.at(count - 2), m_vertices.at(count - 1), m_vertices.at(count - 4), m_vertices.at(count - 3), points);
+        int front = 0;
+        int end = points.size() / 2;
+        while (front != end) {
+            m_vertices.add(points[2 * end - 2]);
+            m_vertices.add(points[2 * end - 1]);
+            --end;
+            if (front == end)
+                break;
+            m_vertices.add(points[2 * front + 0]);
+            m_vertices.add(points[2 * front + 1]);
+            ++front;
+        }
+        break; }
+    default: break; // to shut gcc up...
+    }
+}
+
+void QTriangulatingStroker::arcPoints(float cx, float cy, float fromX, float fromY, float toX, float toY, QVarLengthArray<float> &points)
+{
+    float dx1 = fromX - cx;
+    float dy1 = fromY - cy;
+    float dx2 = toX - cx;
+    float dy2 = toY - cy;
+
+    // while more than 180 degrees left:
+    while (dx1 * dy2 - dx2 * dy1 < 0) {
+        float tmpx = dx1 * m_cos_theta - dy1 * m_sin_theta;
+        float tmpy = dx1 * m_sin_theta + dy1 * m_cos_theta;
+        dx1 = tmpx;
+        dy1 = tmpy;
+        points.append(cx + dx1);
+        points.append(cy + dy1);
+    }
+
+    // while more than 90 degrees left:
+    while (dx1 * dx2 + dy1 * dy2 < 0) {
+        float tmpx = dx1 * m_cos_theta - dy1 * m_sin_theta;
+        float tmpy = dx1 * m_sin_theta + dy1 * m_cos_theta;
+        dx1 = tmpx;
+        dy1 = tmpy;
+        points.append(cx + dx1);
+        points.append(cy + dy1);
+    }
+
+    // while more than 0 degrees left:
+    while (dx1 * dy2 - dx2 * dy1 > 0) {
+        float tmpx = dx1 * m_cos_theta - dy1 * m_sin_theta;
+        float tmpy = dx1 * m_sin_theta + dy1 * m_cos_theta;
+        dx1 = tmpx;
+        dy1 = tmpy;
+        points.append(cx + dx1);
+        points.append(cy + dy1);
+    }
+
+    // remove last point which was rotated beyond [toX, toY].
+    if (!points.isEmpty())
+        points.resize(points.size() - 2);
+}
+
+static void qdashprocessor_moveTo(qreal x, qreal y, void *data)
+{
+    ((QDashedStrokeProcessor *) data)->addElement(QPainterPath::MoveToElement, x, y);
+}
+
+static void qdashprocessor_lineTo(qreal x, qreal y, void *data)
+{
+    ((QDashedStrokeProcessor *) data)->addElement(QPainterPath::LineToElement, x, y);
+}
+
+static void qdashprocessor_cubicTo(qreal, qreal, qreal, qreal, qreal, qreal, void *)
+{
+    Q_ASSERT(0); // The dasher should not produce curves...
+}
+
+QDashedStrokeProcessor::QDashedStrokeProcessor()
+    : m_points(0), m_types(0),
+      m_dash_stroker(0), m_inv_scale(1)
+{
+    m_dash_stroker.setMoveToHook(qdashprocessor_moveTo);
+    m_dash_stroker.setLineToHook(qdashprocessor_lineTo);
+    m_dash_stroker.setCubicToHook(qdashprocessor_cubicTo);
+}
+
+void QDashedStrokeProcessor::process(const QVectorPath &path, const QPen &pen, const QRectF &clip)
+{
+
+    const qreal *pts = path.points();
+    const QPainterPath::ElementType *types = path.elements();
+    int count = path.elementCount();
+
+    bool cosmetic = pen.isCosmetic();
+
+    m_points.reset();
+    m_types.reset();
+    m_points.reserve(path.elementCount());
+    m_types.reserve(path.elementCount());
+
+    qreal width = qpen_widthf(pen);
+    if (width == 0)
+        width = 1;
+
+    m_dash_stroker.setDashPattern(pen.dashPattern());
+    m_dash_stroker.setStrokeWidth(cosmetic ? width * m_inv_scale : width);
+    m_dash_stroker.setDashOffset(pen.dashOffset());
+    m_dash_stroker.setMiterLimit(pen.miterLimit());
+    m_dash_stroker.setClipRect(clip);
+
+    float curvynessAdd, curvynessMul, roundness = 0;
+
+    // simplfy pens that are thin in device size (2px wide or less)
+    if (width < 2.5 && (cosmetic || m_inv_scale == 1)) {
+        curvynessAdd = 0.5;
+        curvynessMul = CURVE_FLATNESS / m_inv_scale;
+        roundness = 1;
+    } else if (cosmetic) {
+        curvynessAdd= width / 2;
+        curvynessMul= CURVE_FLATNESS;
+        roundness = qMax<int>(4, width * CURVE_FLATNESS);
+    } else {
+        curvynessAdd = width * m_inv_scale;
+        curvynessMul = CURVE_FLATNESS / m_inv_scale;
+        roundness = qMax<int>(4, width * curvynessMul);
+    }
+
+    if (count < 2)
+        return;
+
+    const qreal *endPts = pts + (count<<1);
+
+    m_dash_stroker.begin(this);
+
+    if (!types) {
+        m_dash_stroker.moveTo(pts[0], pts[1]);
+        pts += 2;
+        while (pts < endPts) {
+            m_dash_stroker.lineTo(pts[0], pts[1]);
+            pts += 2;
+        }
+    } else {
+        while (pts < endPts) {
+            switch (*types) {
+            case QPainterPath::MoveToElement:
+                m_dash_stroker.moveTo(pts[0], pts[1]);
+                pts += 2;
+                ++types;
+                break;
+            case QPainterPath::LineToElement:
+                m_dash_stroker.lineTo(pts[0], pts[1]);
+                pts += 2;
+                ++types;
+                break;
+            case QPainterPath::CurveToElement: {
+                QBezier b = QBezier::fromPoints(*(((const QPointF *) pts) - 1),
+                                                *(((const QPointF *) pts)),
+                                                *(((const QPointF *) pts) + 1),
+                                                *(((const QPointF *) pts) + 2));
+                QRectF bounds = b.bounds();
+                float rad = qMax(bounds.width(), bounds.height());
+                int threshold = qMin<float>(64, (rad + curvynessAdd) * curvynessMul);
+                if (threshold < 4)
+                    threshold = 4;
+
+                qreal threshold_minus_1 = threshold - 1;
+                for (int i=0; i<threshold; ++i) {
+                    QPointF pt = b.pointAt(i / threshold_minus_1);
+                    m_dash_stroker.lineTo(pt.x(), pt.y());
+                }
+                pts += 6;
+                types += 3;
+                break; }
+            default: break;
+            }
+        }
+    }
+
+    m_dash_stroker.end();
+}
+
+QT_END_NAMESPACE
+
diff --git a/src/opengl/gl2paintengineex/qtriangulatingstroker_p.h b/src/opengl/gl2paintengineex/qtriangulatingstroker_p.h
new file mode 100644
index 0000000000..adb5d5264d
--- /dev/null
+++ b/src/opengl/gl2paintengineex/qtriangulatingstroker_p.h
@@ -0,0 +1,157 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QTRIANGULATINGSTROKER_P_H
+#define QTRIANGULATINGSTROKER_P_H
+
+#include <private/qdatabuffer_p.h>
+#include <qvarlengtharray.h>
+#include <private/qvectorpath_p.h>
+#include <private/qbezier_p.h>
+#include <private/qnumeric_p.h>
+#include <private/qmath_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QTriangulatingStroker
+{
+public:
+    QTriangulatingStroker() : m_vertices(0) {}
+    void process(const QVectorPath &path, const QPen &pen, const QRectF &clip);
+
+    inline int vertexCount() const { return m_vertices.size(); }
+    inline const float *vertices() const { return m_vertices.data(); }
+
+    inline void setInvScale(qreal invScale) { m_inv_scale = invScale; }
+
+private:
+    inline void emitLineSegment(float x, float y, float nx, float ny);
+    void moveTo(const qreal *pts);
+    inline void lineTo(const qreal *pts);
+    void cubicTo(const qreal *pts);
+    void join(const qreal *pts);
+    inline void normalVector(float x1, float y1, float x2, float y2, float *nx, float *ny);
+    void endCap(const qreal *pts);
+    void arcPoints(float cx, float cy, float fromX, float fromY, float toX, float toY, QVarLengthArray<float> &points);
+    void endCapOrJoinClosed(const qreal *start, const qreal *cur, bool implicitClose, bool endsAtStart);
+
+
+    QDataBuffer<float> m_vertices;
+
+    float m_cx, m_cy;           // current points
+    float m_nvx, m_nvy;         // normal vector...
+    float m_width;
+    qreal m_miter_limit;
+
+    int m_roundness;            // Number of line segments in a round join
+    qreal m_sin_theta;          // sin(m_roundness / 360);
+    qreal m_cos_theta;          // cos(m_roundness / 360);
+    qreal m_inv_scale;
+    float m_curvyness_mul;
+    float m_curvyness_add;
+
+    Qt::PenJoinStyle m_join_style;
+    Qt::PenCapStyle m_cap_style;
+};
+
+class QDashedStrokeProcessor
+{
+public:
+    QDashedStrokeProcessor();
+
+    void process(const QVectorPath &path, const QPen &pen, const QRectF &clip);
+
+    inline void addElement(QPainterPath::ElementType type, qreal x, qreal y) {
+        m_points.add(x);
+        m_points.add(y);
+        m_types.add(type);
+    }
+
+    inline int elementCount() const { return m_types.size(); }
+    inline qreal *points() const { return m_points.data(); }
+    inline QPainterPath::ElementType *elementTypes() const { return m_types.data(); }
+
+    inline void setInvScale(qreal invScale) { m_inv_scale = invScale; }
+
+private:
+    QDataBuffer<qreal> m_points;
+    QDataBuffer<QPainterPath::ElementType> m_types;
+    QDashStroker m_dash_stroker;
+    qreal m_inv_scale;
+};
+
+inline void QTriangulatingStroker::normalVector(float x1, float y1, float x2, float y2,
+                                                float *nx, float *ny)
+{
+    float dx = x2 - x1;
+    float dy = y2 - y1;
+
+    float pw;
+
+    if (dx == 0)
+        pw = m_width / qAbs(dy);
+    else if (dy == 0)
+        pw = m_width / qAbs(dx);
+    else
+        pw = m_width / sqrt(dx*dx + dy*dy);
+
+    *nx = -dy * pw;
+    *ny = dx * pw;
+}
+
+inline void QTriangulatingStroker::emitLineSegment(float x, float y, float vx, float vy)
+{
+    m_vertices.add(x + vx);
+    m_vertices.add(y + vy);
+    m_vertices.add(x - vx);
+    m_vertices.add(y - vy);
+}
+
+void QTriangulatingStroker::lineTo(const qreal *pts)
+{
+    emitLineSegment(pts[0], pts[1], m_nvx, m_nvy);
+    m_cx = pts[0];
+    m_cy = pts[1];
+}
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/opengl/gl2paintengineex/qtriangulator.cpp b/src/opengl/gl2paintengineex/qtriangulator.cpp
new file mode 100644
index 0000000000..94024f3d74
--- /dev/null
+++ b/src/opengl/gl2paintengineex/qtriangulator.cpp
@@ -0,0 +1,3114 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qtriangulator_p.h"
+
+#include <QtGui/qdialog.h>
+#include <QtGui/qevent.h>
+#include <QtGui/qpainter.h>
+#include <QtGui/qpainterpath.h>
+#include <QtGui/private/qbezier_p.h>
+#include <QtGui/private/qdatabuffer_p.h>
+#include <QtCore/qbitarray.h>
+#include <QtCore/qvarlengtharray.h>
+#include <QtCore/qqueue.h>
+#include <QtCore/qglobal.h>
+#include <QtCore/qpoint.h>
+#include <QtCore/qalgorithms.h>
+#include <QtDebug>
+
+#include <math.h>
+
+#include <private/qgl_p.h>
+
+QT_BEGIN_NAMESPACE
+
+//#define Q_TRIANGULATOR_DEBUG
+
+#define Q_FIXED_POINT_SCALE 32
+
+// Quick sort.
+template <class T, class LessThan>
+#ifdef Q_CC_RVCT // RVCT 2.2 doesn't see recursive _static_ template function
+void sort(T *array, int count, LessThan lessThan)
+#else
+static void sort(T *array, int count, LessThan lessThan)
+#endif
+{
+    // If the number of elements fall below some threshold, use insertion sort.
+    const int INSERTION_SORT_LIMIT = 7; // About 7 is fastest on my computer...
+    if (count <= INSERTION_SORT_LIMIT) {
+        for (int i = 1; i < count; ++i) {
+            T temp = array[i];
+            int j = i;
+            while (j > 0 && lessThan(temp, array[j - 1])) {
+                array[j] = array[j - 1];
+                --j;
+            }
+            array[j] = temp;
+        }
+        return;
+    }
+
+    int high = count - 1;
+    int low = 0;
+    int mid = high / 2;
+    if (lessThan(array[mid], array[low]))
+        qSwap(array[mid], array[low]);
+    if (lessThan(array[high], array[mid]))
+        qSwap(array[high], array[mid]);
+    if (lessThan(array[mid], array[low]))
+        qSwap(array[mid], array[low]);
+
+    --high;
+    ++low;
+    qSwap(array[mid], array[high]);
+    int pivot = high;
+    --high;
+
+    while (low <= high) {
+        while (!lessThan(array[pivot], array[low])) {
+            ++low;
+            if (low > high)
+                goto sort_loop_end;
+        }
+        while (!lessThan(array[high], array[pivot])) {
+            --high;
+            if (low > high)
+                goto sort_loop_end;
+        }
+        qSwap(array[low], array[high]);
+        ++low;
+        --high;
+    }
+sort_loop_end:
+    if (low != pivot)
+        qSwap(array[pivot], array[low]);
+    sort(array, low, lessThan);
+    sort(array + low + 1, count - low - 1, lessThan);
+}
+
+// Quick sort.
+template <class T>
+#ifdef Q_CC_RVCT
+void sort(T *array, int count) // RVCT 2.2 doesn't see recursive _static_ template function
+#else
+static void sort(T *array, int count)
+#endif
+{
+    // If the number of elements fall below some threshold, use insertion sort.
+    const int INSERTION_SORT_LIMIT = 25; // About 25 is fastest on my computer...
+    if (count <= INSERTION_SORT_LIMIT) {
+        for (int i = 1; i < count; ++i) {
+            T temp = array[i];
+            int j = i;
+            while (j > 0 && (temp < array[j - 1])) {
+                array[j] = array[j - 1];
+                --j;
+            }
+            array[j] = temp;
+        }
+        return;
+    }
+
+    int high = count - 1;
+    int low = 0;
+    int mid = high / 2;
+    if ((array[mid] < array[low]))
+        qSwap(array[mid], array[low]);
+    if ((array[high] < array[mid]))
+        qSwap(array[high], array[mid]);
+    if ((array[mid] < array[low]))
+        qSwap(array[mid], array[low]);
+
+    --high;
+    ++low;
+    qSwap(array[mid], array[high]);
+    int pivot = high;
+    --high;
+
+    while (low <= high) {
+        while (!(array[pivot] < array[low])) {
+            ++low;
+            if (low > high)
+                goto sort_loop_end;
+        }
+        while (!(array[high] < array[pivot])) {
+            --high;
+            if (low > high)
+                goto sort_loop_end;
+        }
+        qSwap(array[low], array[high]);
+        ++low;
+        --high;
+    }
+sort_loop_end:
+    if (low != pivot)
+        qSwap(array[pivot], array[low]);
+    sort(array, low);
+    sort(array + low + 1, count - low - 1);
+}
+
+template<typename T>
+struct QVertexSet
+{
+    inline QVertexSet() { }
+    inline QVertexSet(const QVertexSet<T> &other) : vertices(other.vertices), indices(other.indices) { }
+    QVertexSet<T> &operator = (const QVertexSet<T> &other) {vertices = other.vertices; indices = other.indices; return *this;}
+
+    // The vertices of a triangle are given by: (x[i[n]], y[i[n]]), (x[j[n]], y[j[n]]), (x[k[n]], y[k[n]]), n = 0, 1, ...
+    QVector<qreal> vertices; // [x[0], y[0], x[1], y[1], x[2], ...]
+    QVector<T> indices; // [i[0], j[0], k[0], i[1], j[1], k[1], i[2], ...]
+};
+
+//============================================================================//
+//                                 QFraction                                  //
+//============================================================================//
+
+// Fraction must be in the range [0, 1)
+struct QFraction
+{
+    // Comparison operators must not be called on invalid fractions.
+    inline bool operator < (const QFraction &other) const;
+    inline bool operator == (const QFraction &other) const;
+    inline bool operator != (const QFraction &other) const {return !(*this == other);}
+    inline bool operator > (const QFraction &other) const {return other < *this;}
+    inline bool operator >= (const QFraction &other) const {return !(*this < other);}
+    inline bool operator <= (const QFraction &other) const {return !(*this > other);}
+
+    inline bool isValid() const {return denominator != 0;}
+
+    // numerator and denominator must not have common denominators.
+    quint64 numerator, denominator;
+};
+
+static inline quint64 gcd(quint64 x, quint64 y)
+{
+    while (y != 0) {
+        quint64 z = y;
+        y = x % y;
+        x = z;
+    }
+    return x;
+}
+
+static inline int compare(quint64 a, quint64 b)
+{
+    return (a > b) - (a < b);
+}
+
+// Compare a/b with c/d.
+// Return negative if less, 0 if equal, positive if greater.
+// a < b, c < d
+static int qCompareFractions(quint64 a, quint64 b, quint64 c, quint64 d)
+{
+    const quint64 LIMIT = Q_UINT64_C(0x100000000);
+    for (;;) {
+        // If the products 'ad' and 'bc' fit into 64 bits, they can be directly compared.
+        if (b < LIMIT && d < LIMIT)
+            return compare(a * d, b * c);
+
+        if (a == 0 || c == 0)
+            return compare(a, c);
+
+        // a/b < c/d  <=>  d/c < b/a
+        quint64 b_div_a = b / a;
+        quint64 d_div_c = d / c;
+        if (b_div_a != d_div_c)
+            return compare(d_div_c, b_div_a);
+
+        // floor(d/c) == floor(b/a)
+        // frac(d/c) < frac(b/a) ?
+        // frac(x/y) = (x%y)/y
+        d -= d_div_c * c; //d %= c;
+        b -= b_div_a * a; //b %= a;
+        qSwap(a, d);
+        qSwap(b, c);
+    }
+}
+
+// Fraction must be in the range [0, 1)
+// Assume input is valid.
+static QFraction qFraction(quint64 n, quint64 d) {
+    QFraction result;
+    if (n == 0) {
+        result.numerator = 0;
+        result.denominator = 1;
+    } else {
+        quint64 g = gcd(n, d);
+        result.numerator = n / g;
+        result.denominator = d / g;
+    }
+    return result;
+}
+
+inline bool QFraction::operator < (const QFraction &other) const
+{
+    return qCompareFractions(numerator, denominator, other.numerator, other.denominator) < 0;
+}
+
+inline bool QFraction::operator == (const QFraction &other) const
+{
+    return numerator == other.numerator && denominator == other.denominator;
+}
+
+//============================================================================//
+//                                 QPodPoint                                  //
+//============================================================================//
+
+struct QPodPoint
+{
+    inline bool operator < (const QPodPoint &other) const
+    {
+        if (y != other.y)
+            return y < other.y;
+        return x < other.x;
+    }
+
+    inline bool operator > (const QPodPoint &other) const {return other < *this;}
+    inline bool operator <= (const QPodPoint &other) const {return !(*this > other);}
+    inline bool operator >= (const QPodPoint &other) const {return !(*this < other);}
+    inline bool operator == (const QPodPoint &other) const {return x == other.x && y == other.y;}
+    inline bool operator != (const QPodPoint &other) const {return x != other.x || y != other.y;}
+
+    inline QPodPoint &operator += (const QPodPoint &other) {x += other.x; y += other.y; return *this;}
+    inline QPodPoint &operator -= (const QPodPoint &other) {x -= other.x; y -= other.y; return *this;}
+    inline QPodPoint operator + (const QPodPoint &other) const {QPodPoint result = {x + other.x, y + other.y}; return result;}
+    inline QPodPoint operator - (const QPodPoint &other) const {QPodPoint result = {x - other.x, y - other.y}; return result;}
+
+    int x;
+    int y;
+};
+
+static inline qint64 qCross(const QPodPoint &u, const QPodPoint &v)
+{
+    return qint64(u.x) * qint64(v.y) - qint64(u.y) * qint64(v.x);
+}
+
+static inline qint64 qDot(const QPodPoint &u, const QPodPoint &v)
+{
+    return qint64(u.x) * qint64(v.x) + qint64(u.y) * qint64(v.y);
+}
+
+// Return positive value if 'p' is to the right of the line 'v1'->'v2', negative if left of the
+// line and zero if exactly on the line.
+// The returned value is the z-component of the qCross product between 'v2-v1' and 'p-v1',
+// which is twice the signed area of the triangle 'p'->'v1'->'v2' (positive for CW order).
+static inline qint64 qPointDistanceFromLine(const QPodPoint &p, const QPodPoint &v1, const QPodPoint &v2)
+{
+    return qCross(v2 - v1, p - v1);
+}
+
+static inline bool qPointIsLeftOfLine(const QPodPoint &p, const QPodPoint &v1, const QPodPoint &v2)
+{
+    return QT_PREPEND_NAMESPACE(qPointDistanceFromLine)(p, v1, v2) < 0;
+}
+
+// Return:
+// -1 if u < v
+//  0 if u == v
+//  1 if u > v
+static int comparePoints(const QPodPoint &u, const QPodPoint &v)
+{
+    if (u.y < v.y)
+        return -1;
+    if (u.y > v.y)
+        return 1;
+    if (u.x < v.x)
+        return -1;
+    if (u.x > v.x)
+        return 1;
+    return 0;
+}
+
+//============================================================================//
+//                             QIntersectionPoint                             //
+//============================================================================//
+
+struct QIntersectionPoint
+{
+    inline bool isValid() const {return xOffset.isValid() && yOffset.isValid();}
+    QPodPoint round() const;
+    inline bool isAccurate() const {return xOffset.numerator == 0 && yOffset.numerator == 0;}
+    bool operator < (const QIntersectionPoint &other) const;
+    bool operator == (const QIntersectionPoint &other) const;
+    inline bool operator != (const QIntersectionPoint &other) const {return !(*this == other);}
+    inline bool operator > (const QIntersectionPoint &other) const {return other < *this;}
+    inline bool operator >= (const QIntersectionPoint &other) const {return !(*this < other);}
+    inline bool operator <= (const QIntersectionPoint &other) const {return !(*this > other);}
+    bool isOnLine(const QPodPoint &u, const QPodPoint &v) const;
+
+    QPodPoint upperLeft;
+    QFraction xOffset;
+    QFraction yOffset;
+};
+
+static inline QIntersectionPoint qIntersectionPoint(const QPodPoint &point)
+{
+    // upperLeft = point, xOffset = 0/1, yOffset = 0/1.
+    QIntersectionPoint p = {{point.x, point.y}, {0, 1}, {0, 1}};
+    return p;
+}
+
+static inline QIntersectionPoint qIntersectionPoint(int x, int y)
+{
+    // upperLeft = (x, y), xOffset = 0/1, yOffset = 0/1.
+    QIntersectionPoint p = {{x, y}, {0, 1}, {0, 1}};
+    return p;
+}
+
+static QIntersectionPoint qIntersectionPoint(const QPodPoint &u1, const QPodPoint &u2, const QPodPoint &v1, const QPodPoint &v2)
+{
+    QIntersectionPoint result = {{0, 0}, {0, 0}, {0, 0}};
+
+    QPodPoint u = u2 - u1;
+    QPodPoint v = v2 - v1;
+    qint64 d1 = qCross(u, v1 - u1);
+    qint64 d2 = qCross(u, v2 - u1);
+    qint64 det = d2 - d1;
+    qint64 d3 = qCross(v, u1 - v1);
+    qint64 d4 = d3 - det; //qCross(v, u2 - v1);
+
+    // Check that the math is correct.
+    Q_ASSERT(d4 == qCross(v, u2 - v1));
+
+    // The intersection point can be expressed as:
+    // v1 - v * d1/det
+    // v2 - v * d2/det
+    // u1 + u * d3/det
+    // u2 + u * d4/det
+
+    // I'm only interested in lines that are crossing, so ignore parallel lines even if they overlap.
+    if (det == 0)
+        return result;
+
+    if (det < 0) {
+        det = -det;
+        d1 = -d1;
+        d2 = -d2;
+        d3 = -d3;
+        d4 = -d4;
+    }
+
+    // I'm only interested in lines intersecting at their interior, not at their end points.
+    // The lines intersect at their interior if and only if 'd1 < 0', 'd2 > 0', 'd3 < 0' and 'd4 > 0'.
+    if (d1 >= 0 || d2 <= 0 || d3 <= 0 || d4 >= 0)
+        return result;
+
+    // Calculate the intersection point as follows:
+    // v1 - v * d1/det | v1 <= v2 (component-wise)
+    // v2 - v * d2/det | v2 < v1 (component-wise)
+
+    // Assuming 21 bits per vector component.
+    // TODO: Make code path for 31 bits per vector component.
+    if (v.x >= 0) {
+        result.upperLeft.x = v1.x + (-v.x * d1) / det;
+        result.xOffset = qFraction(quint64(-v.x * d1) % quint64(det), quint64(det));
+    } else {
+        result.upperLeft.x = v2.x + (-v.x * d2) / det;
+        result.xOffset = qFraction(quint64(-v.x * d2) % quint64(det), quint64(det));
+    }
+
+    if (v.y >= 0) {
+        result.upperLeft.y = v1.y + (-v.y * d1) / det;
+        result.yOffset = qFraction(quint64(-v.y * d1) % quint64(det), quint64(det));
+    } else {
+        result.upperLeft.y = v2.y + (-v.y * d2) / det;
+        result.yOffset = qFraction(quint64(-v.y * d2) % quint64(det), quint64(det));
+    }
+
+    Q_ASSERT(result.xOffset.isValid());
+    Q_ASSERT(result.yOffset.isValid());
+    return result;
+}
+
+QPodPoint QIntersectionPoint::round() const
+{
+    QPodPoint result = upperLeft;
+    if (2 * xOffset.numerator >= xOffset.denominator)
+        ++result.x;
+    if (2 * yOffset.numerator >= yOffset.denominator)
+        ++result.y;
+    return result;
+}
+
+bool QIntersectionPoint::operator < (const QIntersectionPoint &other) const
+{
+    if (upperLeft.y != other.upperLeft.y)
+        return upperLeft.y < other.upperLeft.y;
+    if (yOffset != other.yOffset)
+        return yOffset < other.yOffset;
+    if (upperLeft.x != other.upperLeft.x)
+        return upperLeft.x < other.upperLeft.x;
+    return xOffset < other.xOffset;
+}
+
+bool QIntersectionPoint::operator == (const QIntersectionPoint &other) const
+{
+    return upperLeft == other.upperLeft && xOffset == other.xOffset && yOffset == other.yOffset;
+}
+
+// Returns true if this point is on the infinite line passing through 'u' and 'v'.
+bool QIntersectionPoint::isOnLine(const QPodPoint &u, const QPodPoint &v) const
+{
+    // TODO: Make code path for coordinates with more than 21 bits.
+    const QPodPoint p = upperLeft - u;
+    const QPodPoint q = v - u;
+    bool isHorizontal = p.y == 0 && yOffset.numerator == 0;
+    bool isVertical = p.x == 0 && xOffset.numerator == 0;
+    if (isHorizontal && isVertical)
+        return true;
+    if (isHorizontal)
+        return q.y == 0;
+    if (q.y == 0)
+        return false;
+    if (isVertical)
+        return q.x == 0;
+    if (q.x == 0)
+        return false;
+
+    // At this point, 'p+offset' and 'q' cannot lie on the x or y axis.
+
+    if (((q.x < 0) == (q.y < 0)) != ((p.x < 0) == (p.y < 0)))
+        return false; // 'p + offset' and 'q' pass through different quadrants.
+    
+    // Move all coordinates into the first quadrant.
+    quint64 nx, ny;
+    if (p.x < 0)
+        nx = quint64(-p.x) * xOffset.denominator - xOffset.numerator;
+    else
+        nx = quint64(p.x) * xOffset.denominator + xOffset.numerator;
+    if (p.y < 0)
+        ny = quint64(-p.y) * yOffset.denominator - yOffset.numerator;
+    else
+        ny = quint64(p.y) * yOffset.denominator + yOffset.numerator;
+
+    return qFraction(quint64(qAbs(q.x)) * xOffset.denominator, quint64(qAbs(q.y)) * yOffset.denominator) == qFraction(nx, ny);
+}
+
+//============================================================================//
+//                                  QMaxHeap                                  //
+//============================================================================//
+
+template <class T>
+class QMaxHeap
+{
+public:
+    QMaxHeap() : m_data(0) {}
+    inline int size() const {return m_data.size();}
+    inline bool empty() const {return m_data.isEmpty();}
+    inline bool isEmpty() const {return m_data.isEmpty();}
+    void push(const T &x);
+    T pop();
+    inline const T &top() const {return m_data.first();}
+private:
+    static inline int parent(int i) {return (i - 1) / 2;}
+    static inline int left(int i) {return 2 * i + 1;}
+    static inline int right(int i) {return 2 * i + 2;}
+
+    QDataBuffer<T> m_data;
+};
+
+template <class T>
+void QMaxHeap<T>::push(const T &x)
+{
+    int current = m_data.size();
+    int parent = QMaxHeap::parent(current);
+    m_data.add(x);
+    while (current != 0 && m_data.at(parent) < x) {
+        m_data.at(current) = m_data.at(parent);
+        current = parent;
+        parent = QMaxHeap::parent(current);
+    }
+    m_data.at(current) = x;
+}
+
+template <class T>
+T QMaxHeap<T>::pop()
+{
+    T result = m_data.first();
+    T back = m_data.last();
+    m_data.pop_back();
+    if (!m_data.isEmpty()) {
+        int current = 0;
+        for (;;) {
+            int left = QMaxHeap::left(current);
+            int right = QMaxHeap::right(current);
+            if (left >= m_data.size())
+                break;
+            int greater = left;
+            if (right < m_data.size() && m_data.at(left) < m_data.at(right))
+                greater = right;
+            if (m_data.at(greater) < back)
+                break;
+            m_data.at(current) = m_data.at(greater);
+            current = greater;
+        }
+        m_data.at(current) = back;
+    }
+    return result;
+}
+
+//============================================================================//
+//                                  QRBTree                                   //
+//============================================================================//
+
+template <class T>
+struct QRBTree
+{
+    struct Node
+    {
+        inline Node() : parent(0), left(0), right(0), red(true) { }
+        inline ~Node() {if (left) delete left; if (right) delete right;}
+        T data;
+        Node *parent;
+        Node *left;
+        Node *right;
+        bool red;
+    };
+
+    inline QRBTree() : root(0), freeList(0) { }
+    inline ~QRBTree();
+
+    inline void clear();
+
+    void attachBefore(Node *parent, Node *child);
+    void attachAfter(Node *parent, Node *child);
+
+    inline Node *front(Node *node) const;
+    inline Node *back(Node *node) const;
+    Node *next(Node *node) const;
+    Node *previous(Node *node) const;
+
+    inline void deleteNode(Node *&node);
+    inline Node *newNode();
+
+    // Return 1 if 'left' comes after 'right', 0 if equal, and -1 otherwise.
+    // 'left' and 'right' cannot be null.
+    int order(Node *left, Node *right);
+    inline bool validate() const;
+
+private:
+    void rotateLeft(Node *node);
+    void rotateRight(Node *node);
+    void update(Node *node);
+
+    inline void attachLeft(Node *parent, Node *child);
+    inline void attachRight(Node *parent, Node *child);
+
+    int blackDepth(Node *top) const;
+    bool checkRedBlackProperty(Node *top) const;
+
+    void swapNodes(Node *n1, Node *n2);
+    void detach(Node *node);
+
+    // 'node' must be black. rebalance will reduce the depth of black nodes by one in the sibling tree.
+    void rebalance(Node *node);
+
+public:
+    Node *root;
+private:
+    Node *freeList;
+};
+
+template <class T>
+inline QRBTree<T>::~QRBTree()
+{
+    clear();
+    while (freeList) {
+        // Avoid recursively calling the destructor, as this list may become large.
+        Node *next = freeList->right;
+        freeList->right = 0;
+        delete freeList;
+        freeList = next;
+    }
+}
+
+template <class T>
+inline void QRBTree<T>::clear()
+{
+    if (root)
+        delete root;
+    root = 0;
+}
+
+template <class T>
+void QRBTree<T>::rotateLeft(Node *node)
+{
+    //   |            |      //
+    //   N            B      //
+    //  / \          / \     //
+    // A   B  --->  N   D    //
+    //    / \      / \       //
+    //   C   D    A   C      //
+
+    Node *&ref = (node->parent ? (node == node->parent->left ? node->parent->left : node->parent->right) : root);
+    ref = node->right;
+    node->right->parent = node->parent;
+
+    //   :        //
+    //   N        //
+    //  / :|      //
+    // A   B      //
+    //    / \     //
+    //   C   D    //
+
+    node->right = ref->left;
+    if (ref->left)
+        ref->left->parent = node;
+
+    //   :   |     //
+    //   N   B     //
+    //  / \ : \    //
+    // A   C   D   //
+
+    ref->left = node;
+    node->parent = ref;
+
+    //     |       //
+    //     B       //
+    //    / \      //
+    //   N   D     //
+    //  / \        //
+    // A   C       //
+}
+
+template <class T>
+void QRBTree<T>::rotateRight(Node *node)
+{
+    //     |            |        //
+    //     N            A        //
+    //    / \          / \       //
+    //   A   B  --->  C   N      //
+    //  / \              / \     //
+    // C   D            D   B    //
+
+    Node *&ref = (node->parent ? (node == node->parent->left ? node->parent->left : node->parent->right) : root);
+    ref = node->left;
+    node->left->parent = node->parent;
+
+    node->left = ref->right;
+    if (ref->right)
+        ref->right->parent = node;
+
+    ref->right = node;
+    node->parent = ref;
+}
+
+template <class T>
+void QRBTree<T>::update(Node *node) // call this after inserting a node
+{
+    for (;;) {
+        Node *parent = node->parent;
+
+        // if the node is the root, color it black
+        if (!parent) {
+            node->red = false;
+            return;
+        }
+
+        // if the parent is black, the node can be left red
+        if (!parent->red)
+            return;
+
+        // at this point, the parent is red and cannot be the root
+        Node *grandpa = parent->parent;
+        Q_ASSERT(grandpa);
+
+        Node *uncle = (parent == grandpa->left ? grandpa->right : grandpa->left);
+        if (uncle && uncle->red) {
+            // grandpa's black, parent and uncle are red.
+            // let parent and uncle be black, grandpa red and recursively update grandpa.
+            Q_ASSERT(!grandpa->red);
+            parent->red = false;
+            uncle->red = false;
+            grandpa->red = true;
+            node = grandpa;
+            continue;
+        }
+
+        // at this point, uncle is black
+        if (node == parent->right && parent == grandpa->left)
+            rotateLeft(node = parent);
+        else if (node == parent->left && parent == grandpa->right)
+            rotateRight(node = parent);
+        parent = node->parent;
+
+        if (parent == grandpa->left) {
+            rotateRight(grandpa);
+            parent->red = false;
+            grandpa->red = true;
+        } else {
+            rotateLeft(grandpa);
+            parent->red = false;
+            grandpa->red = true;
+        }
+        return;
+    }
+}
+
+template <class T>
+inline void QRBTree<T>::attachLeft(Node *parent, Node *child)
+{
+    Q_ASSERT(!parent->left);
+    parent->left = child;
+    child->parent = parent;
+    update(child);
+}
+
+template <class T>
+inline void QRBTree<T>::attachRight(Node *parent, Node *child)
+{
+    Q_ASSERT(!parent->right);
+    parent->right = child;
+    child->parent = parent;
+    update(child);
+}
+
+template <class T>
+void QRBTree<T>::attachBefore(Node *parent, Node *child)
+{
+    if (!root)
+        update(root = child);
+    else if (!parent)
+        attachRight(back(root), child);
+    else if (parent->left)
+        attachRight(back(parent->left), child);
+    else
+        attachLeft(parent, child);
+}
+
+template <class T>
+void QRBTree<T>::attachAfter(Node *parent, Node *child)
+{
+    if (!root)
+        update(root = child);
+    else if (!parent)
+        attachLeft(front(root), child);
+    else if (parent->right)
+        attachLeft(front(parent->right), child);
+    else
+        attachRight(parent, child);
+}
+
+template <class T>
+void QRBTree<T>::swapNodes(Node *n1, Node *n2)
+{
+    // Since iterators must not be invalidated, it is not sufficient to only swap the data.
+    if (n1->parent == n2) {
+        n1->parent = n2->parent;
+        n2->parent = n1;
+    } else if (n2->parent == n1) {
+        n2->parent = n1->parent;
+        n1->parent = n2;
+    } else {
+        qSwap(n1->parent, n2->parent);
+    }
+
+    qSwap(n1->left, n2->left);
+    qSwap(n1->right, n2->right);
+    qSwap(n1->red, n2->red);
+
+    if (n1->parent) {
+        if (n1->parent->left == n2)
+            n1->parent->left = n1;
+        else
+            n1->parent->right = n1;
+    } else {
+        root = n1;
+    }
+
+    if (n2->parent) {
+        if (n2->parent->left == n1)
+            n2->parent->left = n2;
+        else
+            n2->parent->right = n2;
+    } else {
+        root = n2;
+    }
+
+    if (n1->left)
+        n1->left->parent = n1;
+    if (n1->right)
+        n1->right->parent = n1;
+
+    if (n2->left)
+        n2->left->parent = n2;
+    if (n2->right)
+        n2->right->parent = n2;
+}
+
+template <class T>
+void QRBTree<T>::detach(Node *node) // call this before removing a node.
+{
+    if (node->right)
+        swapNodes(node, front(node->right));
+
+    Node *child = (node->left ? node->left : node->right);
+
+    if (!node->red) {
+        if (child && child->red)
+            child->red = false;
+        else
+            rebalance(node);
+    }
+
+    Node *&ref = (node->parent ? (node == node->parent->left ? node->parent->left : node->parent->right) : root);
+    ref = child;
+    if (child)
+        child->parent = node->parent;
+    node->left = node->right = node->parent = 0;
+}
+
+// 'node' must be black. rebalance will reduce the depth of black nodes by one in the sibling tree.
+template <class T>
+void QRBTree<T>::rebalance(Node *node)
+{
+    Q_ASSERT(!node->red);
+    for (;;) {
+        if (!node->parent)
+            return;
+
+        // at this point, node is not a parent, it is black, thus it must have a sibling.
+        Node *sibling = (node == node->parent->left ? node->parent->right : node->parent->left);
+        Q_ASSERT(sibling);
+
+        if (sibling->red) {
+            sibling->red = false;
+            node->parent->red = true;
+            if (node == node->parent->left)
+                rotateLeft(node->parent);
+            else
+                rotateRight(node->parent);
+            sibling = (node == node->parent->left ? node->parent->right : node->parent->left);
+            Q_ASSERT(sibling);
+        }
+
+        // at this point, the sibling is black.
+        Q_ASSERT(!sibling->red);
+
+        if ((!sibling->left || !sibling->left->red) && (!sibling->right || !sibling->right->red)) {
+            bool parentWasRed = node->parent->red;
+            sibling->red = true;
+            node->parent->red = false;
+            if (parentWasRed)
+                return;
+            node = node->parent;
+            continue;
+        }
+
+        // at this point, at least one of the sibling's children is red.
+
+        if (node == node->parent->left) {
+            if (!sibling->right || !sibling->right->red) {
+                Q_ASSERT(sibling->left);
+                sibling->red = true;
+                sibling->left->red = false;
+                rotateRight(sibling);
+
+                sibling = sibling->parent;
+                Q_ASSERT(sibling);
+            }
+            sibling->red = node->parent->red;
+            node->parent->red = false;
+
+            Q_ASSERT(sibling->right->red);
+            sibling->right->red = false;
+            rotateLeft(node->parent);
+        } else {
+            if (!sibling->left || !sibling->left->red) {
+                Q_ASSERT(sibling->right);
+                sibling->red = true;
+                sibling->right->red = false;
+                rotateLeft(sibling);
+
+                sibling = sibling->parent;
+                Q_ASSERT(sibling);
+            }
+            sibling->red = node->parent->red;
+            node->parent->red = false;
+
+            Q_ASSERT(sibling->left->red);
+            sibling->left->red = false;
+            rotateRight(node->parent);
+        }
+        return;
+    }
+}
+
+template <class T>
+inline typename QRBTree<T>::Node *QRBTree<T>::front(Node *node) const
+{
+    while (node->left)
+        node = node->left;
+    return node;
+}
+
+template <class T>
+inline typename QRBTree<T>::Node *QRBTree<T>::back(Node *node) const
+{
+    while (node->right)
+        node = node->right;
+    return node;
+}
+
+template <class T>
+typename QRBTree<T>::Node *QRBTree<T>::next(Node *node) const
+{
+    if (node->right)
+        return front(node->right);
+    while (node->parent && node == node->parent->right)
+        node = node->parent;
+    return node->parent;
+}
+
+template <class T>
+typename QRBTree<T>::Node *QRBTree<T>::previous(Node *node) const
+{
+    if (node->left)
+        return back(node->left);
+    while (node->parent && node == node->parent->left)
+        node = node->parent;
+    return node->parent;
+}
+
+template <class T>
+int QRBTree<T>::blackDepth(Node *top) const
+{
+    if (!top)
+        return 0;
+    int leftDepth = blackDepth(top->left);
+    int rightDepth = blackDepth(top->right);
+    if (leftDepth != rightDepth)
+        return -1;
+    if (!top->red)
+        ++leftDepth;
+    return leftDepth;
+}
+
+template <class T>
+bool QRBTree<T>::checkRedBlackProperty(Node *top) const
+{
+    if (!top)
+        return true;
+    if (top->left && !checkRedBlackProperty(top->left))
+        return false;
+    if (top->right && !checkRedBlackProperty(top->right))
+        return false;
+    return !(top->red && ((top->left && top->left->red) || (top->right && top->right->red)));
+}
+
+template <class T>
+inline bool QRBTree<T>::validate() const
+{
+    return checkRedBlackProperty(root) && blackDepth(root) != -1;
+}
+
+template <class T>
+inline void QRBTree<T>::deleteNode(Node *&node)
+{
+    Q_ASSERT(node);
+    detach(node);
+    node->right = freeList;
+    freeList = node;
+    node = 0;
+}
+
+template <class T>
+inline typename QRBTree<T>::Node *QRBTree<T>::newNode()
+{
+    if (freeList) {
+        Node *node = freeList;
+        freeList = freeList->right;
+        node->parent = node->left = node->right = 0;
+        node->red = true;
+        return node;
+    }
+    return new Node;
+}
+
+// Return 1 if 'left' comes after 'right', 0 if equal, and -1 otherwise.
+// 'left' and 'right' cannot be null.
+template <class T>
+int QRBTree<T>::order(Node *left, Node *right)
+{
+    Q_ASSERT(left && right);
+    if (left == right)
+        return 0;
+
+    QVector<Node *> leftAncestors;
+    QVector<Node *> rightAncestors;
+    while (left) {
+        leftAncestors.push_back(left);
+        left = left->parent;
+    }
+    while (right) {
+        rightAncestors.push_back(right);
+        right = right->parent;
+    }
+    Q_ASSERT(leftAncestors.back() == root && rightAncestors.back() == root);
+
+    while (!leftAncestors.empty() && !rightAncestors.empty() && leftAncestors.back() == rightAncestors.back()) {
+        leftAncestors.pop_back();
+        rightAncestors.pop_back();
+    }
+
+    if (!leftAncestors.empty())
+        return (leftAncestors.back() == leftAncestors.back()->parent->left ? -1 : 1);
+
+    if (!rightAncestors.empty())
+        return (rightAncestors.back() == rightAncestors.back()->parent->right ? -1 : 1);
+
+    // The code should never reach this point.
+    Q_ASSERT(!leftAncestors.empty() || !rightAncestors.empty());
+    return 0;
+}
+
+//============================================================================//
+//                                 QInt64Hash                                 //
+//============================================================================//
+
+// Copied from qhash.cpp
+static const uchar prime_deltas[] = {
+    0,  0,  1,  3,  1,  5,  3,  3,  1,  9,  7,  5,  3,  9, 25,  3,
+    1, 21,  3, 21,  7, 15,  9,  5,  3, 29, 15,  0,  0,  0,  0,  0
+};
+
+// Copied from qhash.cpp
+static inline int primeForNumBits(int numBits)
+{
+    return (1 << numBits) + prime_deltas[numBits];
+}
+
+static inline int primeForCount(int count)
+{
+    int low = 0;
+    int high = 32;
+    for (int i = 0; i < 5; ++i) {
+        int mid = (high + low) / 2;
+        if (count >= 1 << mid)
+            low = mid;
+        else
+            high = mid;
+    }
+    return primeForNumBits(high);
+}
+
+// Hash set of quint64s. Elements cannot be removed without clearing the
+// entire set. A value of -1 is used to mark unused entries.
+class QInt64Set
+{
+public:
+    inline QInt64Set(int capacity = 64);
+    inline ~QInt64Set() {if (m_array) delete[] m_array;}
+    inline bool isValid() const {return m_array;}
+    void insert(quint64 key);
+    bool contains(quint64 key) const;
+    inline void clear();
+private:
+    bool rehash(int capacity);
+
+    static const quint64 UNUSED;
+
+    quint64 *m_array;
+    int m_capacity;
+    int m_count;
+};
+
+const quint64 QInt64Set::UNUSED = quint64(-1);
+
+inline QInt64Set::QInt64Set(int capacity)
+{
+    m_capacity = primeForCount(capacity);
+    m_array = new quint64[m_capacity];
+    if (m_array)
+        clear();
+    else
+        m_capacity = 0;
+}
+
+bool QInt64Set::rehash(int capacity)
+{
+    quint64 *oldArray = m_array;
+    int oldCapacity = m_capacity;
+
+    m_capacity = capacity;
+    m_array = new quint64[m_capacity];
+    if (m_array) {
+        clear();
+        if (oldArray) {
+            for (int i = 0; i < oldCapacity; ++i) {
+                if (oldArray[i] != UNUSED)
+                    insert(oldArray[i]);
+            }
+            delete[] oldArray;
+        }
+        return true;
+    } else {
+        m_capacity = oldCapacity;
+        m_array = oldArray;
+        return false;
+    }
+}
+
+void QInt64Set::insert(quint64 key)
+{
+    if (m_count > 3 * m_capacity / 4)
+        rehash(primeForCount(2 * m_capacity));
+    Q_ASSERT_X(m_array, "QInt64Hash<T>::insert", "Hash set not allocated.");
+    int index = int(key % m_capacity);
+    for (int i = 0; i < m_capacity; ++i) {
+        index += i;
+        if (index >= m_capacity)
+            index -= m_capacity;
+        if (m_array[index] == key)
+            return;
+        if (m_array[index] == UNUSED) {
+            ++m_count;
+            m_array[index] = key;
+            return;
+        }
+    }
+    Q_ASSERT_X(0, "QInt64Hash<T>::insert", "Hash set full.");
+}
+
+bool QInt64Set::contains(quint64 key) const
+{
+    Q_ASSERT_X(m_array, "QInt64Hash<T>::contains", "Hash set not allocated.");
+    int index = int(key % m_capacity);
+    for (int i = 0; i < m_capacity; ++i) {
+        index += i;
+        if (index >= m_capacity)
+            index -= m_capacity;
+        if (m_array[index] == key)
+            return true;
+        if (m_array[index] == UNUSED)
+            return false;
+    }
+    return false;
+}
+
+inline void QInt64Set::clear()
+{
+    Q_ASSERT_X(m_array, "QInt64Hash<T>::clear", "Hash set not allocated.");
+    for (int i = 0; i < m_capacity; ++i)
+        m_array[i] = UNUSED;
+    m_count = 0;
+}
+
+//============================================================================//
+//                                QRingBuffer                                 //
+//============================================================================//
+
+// T must be POD.
+template <class T>
+class QRingBuffer
+{
+public:
+    inline QRingBuffer() : m_array(0), m_head(0), m_size(0), m_capacity(0) { }
+    inline ~QRingBuffer() {if (m_array) delete[] m_array;}
+    bool reallocate(int capacity);
+    inline const T &head() const {Q_ASSERT(m_size > 0); return m_array[m_head];}
+    inline const T &dequeue();
+    inline void enqueue(const T &x);
+    inline bool isEmpty() const {return m_size == 0;}
+private:
+    T *m_array;
+    int m_head;
+    int m_size;
+    int m_capacity;
+};
+
+template <class T>
+bool QRingBuffer<T>::reallocate(int capacity)
+{
+    T *oldArray = m_array;
+    m_array = new T[capacity];
+    if (m_array) {
+        if (oldArray) {
+            if (m_head + m_size > m_capacity) {
+                memcpy(m_array, oldArray + m_head, (m_capacity - m_head) * sizeof(T));
+                memcpy(m_array + (m_capacity - m_head), oldArray, (m_head + m_size - m_capacity) * sizeof(T));
+            } else {
+                memcpy(m_array, oldArray + m_head, m_size * sizeof(T));
+            }
+            delete[] oldArray;
+        }
+        m_capacity = capacity;
+        m_head = 0;
+        return true;
+    } else {
+        m_array = oldArray;
+        return false;
+    }
+}
+
+template <class T>
+inline const T &QRingBuffer<T>::dequeue()
+{
+    Q_ASSERT(m_size > 0);
+    Q_ASSERT(m_array);
+    Q_ASSERT(m_capacity >= m_size);
+    int index = m_head;
+    if (++m_head >= m_capacity)
+        m_head -= m_capacity;
+    --m_size;
+    return m_array[index];
+}
+
+template <class T>
+inline void QRingBuffer<T>::enqueue(const T &x)
+{
+    if (m_size == m_capacity)
+        reallocate(qMax(2 * m_capacity, 64));
+    int index = m_head + m_size;
+    if (index >= m_capacity)
+        index -= m_capacity;
+    m_array[index] = x;
+    ++m_size;
+}
+
+//============================================================================//
+//                               QTriangulator                                //
+//============================================================================//
+template<typename T>
+class QTriangulator
+{
+public:
+    typedef QVarLengthArray<int, 6> ShortArray;
+
+    //================================//
+    // QTriangulator::ComplexToSimple //
+    //================================//
+    friend class ComplexToSimple;
+    class ComplexToSimple
+    {
+    public:
+        inline ComplexToSimple(QTriangulator<T> *parent) : m_parent(parent),
+            m_edges(0), m_events(0), m_splits(0) { }
+        void decompose();
+    private:
+        struct Edge
+        {
+            inline int &upper() {return pointingUp ? to : from;}
+            inline int &lower() {return pointingUp ? from : to;}
+            inline int upper() const {return pointingUp ? to : from;}
+            inline int lower() const {return pointingUp ? from : to;}
+
+            QRBTree<int>::Node *node;
+            int from, to; // vertex
+            int next, previous; // edge
+            int winding;
+            bool mayIntersect;
+            bool pointingUp, originallyPointingUp;
+        };
+
+        friend class CompareEdges;
+        class CompareEdges
+        {
+        public:
+            inline CompareEdges(ComplexToSimple *parent) : m_parent(parent) { }
+            bool operator () (int i, int j) const;
+        private:
+            ComplexToSimple *m_parent;
+        };
+
+        struct Intersection
+        {
+            bool operator < (const Intersection &other) const {return other.intersectionPoint < intersectionPoint;}
+
+            QIntersectionPoint intersectionPoint;
+            int vertex;
+            int leftEdge;
+            int rightEdge;
+        };
+
+        struct Split
+        {
+            int vertex;
+            int edge;
+            bool accurate;
+        };
+
+        struct Event
+        {
+            enum Type {Upper, Lower};
+            inline bool operator < (const Event &other) const;
+
+            QPodPoint point;
+            Type type;
+            int edge;
+        };
+
+#ifdef Q_TRIANGULATOR_DEBUG
+        friend class DebugDialog;
+        friend class QTriangulator;
+        class DebugDialog : public QDialog
+        {
+        public:
+            DebugDialog(ComplexToSimple *parent, int currentVertex);
+        protected:
+            void paintEvent(QPaintEvent *);
+            void wheelEvent(QWheelEvent *);
+            void mouseMoveEvent(QMouseEvent *);
+            void mousePressEvent(QMouseEvent *);
+        private:
+            ComplexToSimple *m_parent;
+            QRectF m_window;
+            QPoint m_lastMousePos;
+            int m_vertex;
+        };
+#endif
+
+        void initEdges();
+        bool calculateIntersection(int left, int right);
+        bool edgeIsLeftOfEdge(int leftEdgeIndex, int rightEdgeIndex) const;
+        QRBTree<int>::Node *searchEdgeLeftOf(int edgeIndex) const;
+        QRBTree<int>::Node *searchEdgeLeftOf(int edgeIndex, QRBTree<int>::Node *after) const;
+        QPair<QRBTree<int>::Node *, QRBTree<int>::Node *> bounds(const QPodPoint &point) const;
+        QPair<QRBTree<int>::Node *, QRBTree<int>::Node *> outerBounds(const QPodPoint &point) const;
+        void splitEdgeListRange(QRBTree<int>::Node *leftmost, QRBTree<int>::Node *rightmost, int vertex, const QIntersectionPoint &intersectionPoint);
+        void reorderEdgeListRange(QRBTree<int>::Node *leftmost, QRBTree<int>::Node *rightmost);
+        void sortEdgeList(const QPodPoint eventPoint);
+        void fillPriorityQueue();
+        void calculateIntersections();
+        int splitEdge(int splitIndex);
+        bool splitEdgesAtIntersections();
+        void insertEdgeIntoVectorIfWanted(ShortArray &orderedEdges, int i);
+        void removeUnwantedEdgesAndConnect();
+        void removeUnusedPoints();
+
+        QTriangulator *m_parent;
+        QDataBuffer<Edge> m_edges;
+        QRBTree<int> m_edgeList;
+        QDataBuffer<Event> m_events;
+        QDataBuffer<Split> m_splits;
+        QMaxHeap<Intersection> m_topIntersection;
+        QInt64Set m_processedEdgePairs;
+        int m_initialPointCount;
+    };
+#ifdef Q_TRIANGULATOR_DEBUG
+    friend class ComplexToSimple::DebugDialog;
+#endif
+
+    //=================================//
+    // QTriangulator::SimpleToMonotone //
+    //=================================//
+    friend class SimpleToMonotone;
+    class SimpleToMonotone
+    {
+    public:
+        inline SimpleToMonotone(QTriangulator<T> *parent) : m_parent(parent), m_edges(0), m_upperVertex(0) { }
+        void decompose();
+    private:
+        enum VertexType {MergeVertex, EndVertex, RegularVertex, StartVertex, SplitVertex};
+
+        struct Edge
+        {
+            QRBTree<int>::Node *node;
+            int helper, twin, next, previous;
+            T from, to;
+            VertexType type;
+            bool pointingUp;
+            int upper() const {return (pointingUp ? to : from);}
+            int lower() const {return (pointingUp ? from : to);}
+        };
+
+        friend class CompareVertices;
+        class CompareVertices
+        {
+        public:
+            CompareVertices(SimpleToMonotone *parent) : m_parent(parent) { }
+            bool operator () (int i, int j) const;
+        private:
+            SimpleToMonotone *m_parent;
+        };
+
+        void setupDataStructures();
+        void removeZeroLengthEdges();
+        void fillPriorityQueue();
+        bool edgeIsLeftOfEdge(int leftEdgeIndex, int rightEdgeIndex) const;
+        // Returns the rightmost edge not to the right of the given edge.
+        QRBTree<int>::Node *searchEdgeLeftOfEdge(int edgeIndex) const;
+        // Returns the rightmost edge left of the given point.
+        QRBTree<int>::Node *searchEdgeLeftOfPoint(int pointIndex) const;
+        void classifyVertex(int i);
+        void classifyVertices();
+        bool pointIsInSector(const QPodPoint &p, const QPodPoint &v1, const QPodPoint &v2, const QPodPoint &v3);
+        bool pointIsInSector(int vertex, int sector);
+        int findSector(int edge, int vertex);
+        void createDiagonal(int lower, int upper);
+        void monotoneDecomposition();
+
+        QTriangulator *m_parent;
+        QRBTree<int> m_edgeList;
+        QDataBuffer<Edge> m_edges;
+        QDataBuffer<int> m_upperVertex;
+        bool m_clockwiseOrder;
+    };
+
+    //====================================//
+    // QTriangulator::MonotoneToTriangles //
+    //====================================//
+    friend class MonotoneToTriangles;
+    class MonotoneToTriangles
+    {
+    public:
+        inline MonotoneToTriangles(QTriangulator<T> *parent) : m_parent(parent) { }
+        void decompose();
+    private:
+        inline T indices(int index) const {return m_parent->m_indices.at(index + m_first);}
+        inline int next(int index) const {return (index + 1) % m_length;}
+        inline int previous(int index) const {return (index + m_length - 1) % m_length;}
+        inline bool less(int i, int j) const {return m_parent->m_vertices.at((qint32)indices(i)) < m_parent->m_vertices.at(indices(j));}
+        inline bool leftOfEdge(int i, int j, int k) const
+        {
+            return qPointIsLeftOfLine(m_parent->m_vertices.at((qint32)indices(i)),
+                m_parent->m_vertices.at((qint32)indices(j)), m_parent->m_vertices.at((qint32)indices(k)));
+        }
+
+        QTriangulator<T> *m_parent;
+        int m_first;
+        int m_length;
+    };
+
+    inline QTriangulator() : m_vertices(0) { }
+
+    // Call this only once.
+    void initialize(const qreal *polygon, int count, uint hint, const QTransform &matrix);
+    // Call this only once.
+    void initialize(const QVectorPath &path, const QTransform &matrix, qreal lod);
+    // Call this only once.
+    void initialize(const QPainterPath &path, const QTransform &matrix, qreal lod);
+    // Call either triangulate() or polyline() only once.
+    QVertexSet<T> triangulate();
+    QVertexSet<T> polyline();
+private:
+    QDataBuffer<QPodPoint> m_vertices;
+    QVector<T> m_indices;
+    uint m_hint;
+};
+
+//============================================================================//
+//                               QTriangulator                                //
+//============================================================================//
+
+template <typename T>
+QVertexSet<T> QTriangulator<T>::triangulate()
+{
+    for (int i = 0; i < m_vertices.size(); ++i) {
+        Q_ASSERT(qAbs(m_vertices.at(i).x) < (1 << 21));
+        Q_ASSERT(qAbs(m_vertices.at(i).y) < (1 << 21));
+    }
+
+    if (!(m_hint & (QVectorPath::OddEvenFill | QVectorPath::WindingFill)))
+        m_hint |= QVectorPath::OddEvenFill;
+
+    if (m_hint & QVectorPath::NonConvexShapeMask) {
+        ComplexToSimple c2s(this);
+        c2s.decompose();
+        SimpleToMonotone s2m(this);
+        s2m.decompose();
+    }
+    MonotoneToTriangles m2t(this);
+    m2t.decompose();
+
+    QVertexSet<T> result;
+    result.indices = m_indices;
+    result.vertices.resize(2 * m_vertices.size());
+    for (int i = 0; i < m_vertices.size(); ++i) {
+        result.vertices[2 * i + 0] = qreal(m_vertices.at(i).x) / Q_FIXED_POINT_SCALE;
+        result.vertices[2 * i + 1] = qreal(m_vertices.at(i).y) / Q_FIXED_POINT_SCALE;
+    }
+    return result;
+}
+
+template <typename T>
+QVertexSet<T> QTriangulator<T>::polyline()
+{
+    QVertexSet<T> result;
+    result.indices = m_indices;
+    result.vertices.resize(2 * m_vertices.size());
+    for (int i = 0; i < m_vertices.size(); ++i) {
+        result.vertices[2 * i + 0] = qreal(m_vertices.at(i).x) / Q_FIXED_POINT_SCALE;
+        result.vertices[2 * i + 1] = qreal(m_vertices.at(i).y) / Q_FIXED_POINT_SCALE;
+    }
+    return result;
+}
+
+template <typename T>
+void QTriangulator<T>::initialize(const qreal *polygon, int count, uint hint, const QTransform &matrix)
+{
+    m_hint = hint;
+    m_vertices.resize(count);
+    m_indices.resize(count + 1);
+    for (int i = 0; i < count; ++i) {
+        qreal x, y;
+        matrix.map(polygon[2 * i + 0], polygon[2 * i + 1], &x, &y);
+        m_vertices.at(i).x = qRound(x * Q_FIXED_POINT_SCALE);
+        m_vertices.at(i).y = qRound(y * Q_FIXED_POINT_SCALE);
+        m_indices[i] = i;
+    }
+    m_indices[count] = T(-1); //Q_TRIANGULATE_END_OF_POLYGON
+}
+
+template <typename T>
+void QTriangulator<T>::initialize(const QVectorPath &path, const QTransform &matrix, qreal lod)
+{
+    m_hint = path.hints();
+    // Curved paths will be converted to complex polygons.
+    m_hint &= ~QVectorPath::CurvedShapeMask;
+
+    const qreal *p = path.points();
+    const QPainterPath::ElementType *e = path.elements();
+    if (e) {
+        for (int i = 0; i < path.elementCount(); ++i, ++e, p += 2) {
+            switch (*e) {
+            case QPainterPath::MoveToElement:
+                if (!m_indices.isEmpty())
+                    m_indices.push_back(T(-1)); // Q_TRIANGULATE_END_OF_POLYGON
+                // Fall through.
+            case QPainterPath::LineToElement:
+                m_indices.push_back(T(m_vertices.size()));
+                m_vertices.resize(m_vertices.size() + 1);
+                qreal x, y;
+                matrix.map(p[0], p[1], &x, &y);
+                m_vertices.last().x = qRound(x * Q_FIXED_POINT_SCALE);
+                m_vertices.last().y = qRound(y * Q_FIXED_POINT_SCALE);
+                break;
+            case QPainterPath::CurveToElement:
+                {
+                    qreal pts[8];
+                    for (int i = 0; i < 4; ++i)
+                        matrix.map(p[2 * i - 2], p[2 * i - 1], &pts[2 * i + 0], &pts[2 * i + 1]);
+                    for (int i = 0; i < 8; ++i)
+                        pts[i] *= lod;
+                    QBezier bezier = QBezier::fromPoints(QPointF(pts[0], pts[1]), QPointF(pts[2], pts[3]), QPointF(pts[4], pts[5]), QPointF(pts[6], pts[7]));
+                    QPolygonF poly = bezier.toPolygon();
+                    // Skip first point, it already exists in 'm_vertices'.
+                    for (int j = 1; j < poly.size(); ++j) {
+                        m_indices.push_back(T(m_vertices.size()));
+                        m_vertices.resize(m_vertices.size() + 1);
+                        m_vertices.last().x = qRound(poly.at(j).x() * Q_FIXED_POINT_SCALE / lod);
+                        m_vertices.last().y = qRound(poly.at(j).y() * Q_FIXED_POINT_SCALE / lod);
+                    }
+                }
+                i += 2;
+                e += 2;
+                p += 4;
+                break;
+            default:
+                Q_ASSERT_X(0, "QTriangulator::triangulate", "Unexpected element type.");
+                break;
+            }
+        }
+    } else {
+        for (int i = 0; i < path.elementCount(); ++i, p += 2) {
+            m_indices.push_back(T(m_vertices.size()));
+            m_vertices.resize(m_vertices.size() + 1);
+            qreal x, y;
+            matrix.map(p[0], p[1], &x, &y);
+            m_vertices.last().x = qRound(x * Q_FIXED_POINT_SCALE);
+            m_vertices.last().y = qRound(y * Q_FIXED_POINT_SCALE);
+        }
+    }
+    m_indices.push_back(T(-1)); // Q_TRIANGULATE_END_OF_POLYGON
+}
+
+template <typename T>
+void QTriangulator<T>::initialize(const QPainterPath &path, const QTransform &matrix, qreal lod)
+{
+    initialize(qtVectorPathForPath(path), matrix, lod);
+}
+
+//============================================================================//
+//                       QTriangulator::ComplexToSimple                       //
+//============================================================================//
+template <typename T>
+void QTriangulator<T>::ComplexToSimple::decompose()
+{
+    m_initialPointCount = m_parent->m_vertices.size();
+    initEdges();
+    do {
+        calculateIntersections();
+    } while (splitEdgesAtIntersections());
+
+    removeUnwantedEdgesAndConnect();
+    removeUnusedPoints();
+
+    m_parent->m_indices.clear();
+    QBitArray processed(m_edges.size(), false);
+    for (int first = 0; first < m_edges.size(); ++first) {
+        // If already processed, or if unused path, skip.
+        if (processed.at(first) || m_edges.at(first).next == -1)
+            continue;
+
+        int i = first;
+        do {
+            Q_ASSERT(!processed.at(i));
+            Q_ASSERT(m_edges.at(m_edges.at(i).next).previous == i);
+            m_parent->m_indices.push_back(m_edges.at(i).from);
+            processed.setBit(i);
+            i = m_edges.at(i).next; // CCW order
+        } while (i != first);
+        m_parent->m_indices.push_back(T(-1)); // Q_TRIANGULATE_END_OF_POLYGON
+    }
+}
+
+template <typename T>
+void QTriangulator<T>::ComplexToSimple::initEdges()
+{
+    // Initialize edge structure.
+    // 'next' and 'previous' are not being initialized at this point.
+    int first = 0;
+    for (int i = 0; i < m_parent->m_indices.size(); ++i) {
+        if (m_parent->m_indices.at(i) == T(-1)) { // Q_TRIANGULATE_END_OF_POLYGON
+            if (m_edges.size() != first)
+                m_edges.last().to = m_edges.at(first).from;
+            first = m_edges.size();
+        } else {
+            Q_ASSERT(i + 1 < m_parent->m_indices.size());
+            // {node, from, to, next, previous, winding, mayIntersect, pointingUp, originallyPointingUp}
+            Edge edge = {0, m_parent->m_indices.at(i), m_parent->m_indices.at(i + 1), -1, -1, 0, true, false, false};
+            m_edges.add(edge);
+        }
+    }
+    if (first != m_edges.size())
+        m_edges.last().to = m_edges.at(first).from;
+    for (int i = 0; i < m_edges.size(); ++i) {
+        m_edges.at(i).originallyPointingUp = m_edges.at(i).pointingUp = 
+            m_parent->m_vertices.at(m_edges.at(i).to) < m_parent->m_vertices.at(m_edges.at(i).from);
+    }
+}
+
+// Return true if new intersection was found
+template <typename T>
+bool QTriangulator<T>::ComplexToSimple::calculateIntersection(int left, int right)
+{
+    const Edge &e1 = m_edges.at(left);
+    const Edge &e2 = m_edges.at(right);
+
+    const QPodPoint &u1 = m_parent->m_vertices.at((qint32)e1.from);
+    const QPodPoint &u2 = m_parent->m_vertices.at((qint32)e1.to);
+    const QPodPoint &v1 = m_parent->m_vertices.at((qint32)e2.from);
+    const QPodPoint &v2 = m_parent->m_vertices.at((qint32)e2.to);
+    if (qMax(u1.x, u2.x) <= qMin(v1.x, v2.x))
+        return false;
+
+    quint64 key = (left > right ? (quint64(right) << 32) | quint64(left) : (quint64(left) << 32) | quint64(right));
+    if (m_processedEdgePairs.contains(key))
+        return false;
+    m_processedEdgePairs.insert(key);
+
+    Intersection intersection;
+    intersection.leftEdge = left;
+    intersection.rightEdge = right;
+    intersection.intersectionPoint = QT_PREPEND_NAMESPACE(qIntersectionPoint)(u1, u2, v1, v2);
+
+    if (!intersection.intersectionPoint.isValid())
+        return false;
+
+    Q_ASSERT(intersection.intersectionPoint.isOnLine(u1, u2));
+    Q_ASSERT(intersection.intersectionPoint.isOnLine(v1, v2));
+
+    intersection.vertex = m_parent->m_vertices.size();
+    m_topIntersection.push(intersection);
+    m_parent->m_vertices.add(intersection.intersectionPoint.round());
+    return true;
+}
+
+template <typename T>
+bool QTriangulator<T>::ComplexToSimple::edgeIsLeftOfEdge(int leftEdgeIndex, int rightEdgeIndex) const
+{
+    const Edge &leftEdge = m_edges.at(leftEdgeIndex);
+    const Edge &rightEdge = m_edges.at(rightEdgeIndex);
+    const QPodPoint &u = m_parent->m_vertices.at(rightEdge.upper());
+    const QPodPoint &l = m_parent->m_vertices.at(rightEdge.lower());
+    const QPodPoint &upper = m_parent->m_vertices.at(leftEdge.upper());
+    if (upper.x < qMin(l.x, u.x))
+        return true;
+    if (upper.x > qMax(l.x, u.x))
+        return false;
+    qint64 d = QT_PREPEND_NAMESPACE(qPointDistanceFromLine)(upper, l, u);
+    // d < 0: left, d > 0: right, d == 0: on top
+    if (d == 0)
+        d = QT_PREPEND_NAMESPACE(qPointDistanceFromLine)(m_parent->m_vertices.at(leftEdge.lower()), l, u);
+    return d < 0;
+}
+
+template <typename T>
+QRBTree<int>::Node *QTriangulator<T>::ComplexToSimple::searchEdgeLeftOf(int edgeIndex) const
+{
+    QRBTree<int>::Node *current = m_edgeList.root;
+    QRBTree<int>::Node *result = 0;
+    while (current) {
+        if (edgeIsLeftOfEdge(edgeIndex, current->data)) {
+            current = current->left;
+        } else {
+            result = current;
+            current = current->right;
+        }
+    }
+    return result;
+}
+
+template <typename T>
+QRBTree<int>::Node *QTriangulator<T>::ComplexToSimple::searchEdgeLeftOf(int edgeIndex, QRBTree<int>::Node *after) const
+{
+    if (!m_edgeList.root)
+        return after;
+    QRBTree<int>::Node *result = after;
+    QRBTree<int>::Node *current = (after ? m_edgeList.next(after) : m_edgeList.front(m_edgeList.root));
+    while (current) {
+        if (edgeIsLeftOfEdge(edgeIndex, current->data))
+            return result;
+        result = current;
+        current = m_edgeList.next(current);
+    }
+    return result;
+}
+
+template <typename T>
+QPair<QRBTree<int>::Node *, QRBTree<int>::Node *> QTriangulator<T>::ComplexToSimple::bounds(const QPodPoint &point) const
+{
+    QRBTree<int>::Node *current = m_edgeList.root;
+    QPair<QRBTree<int>::Node *, QRBTree<int>::Node *> result(0, 0);
+    while (current) {
+        const QPodPoint &v1 = m_parent->m_vertices.at(m_edges.at(current->data).lower());
+        const QPodPoint &v2 = m_parent->m_vertices.at(m_edges.at(current->data).upper());
+        qint64 d = QT_PREPEND_NAMESPACE(qPointDistanceFromLine)(point, v1, v2);
+        if (d == 0) {
+            result.first = result.second = current;
+            break;
+        }
+        current = (d < 0 ? current->left : current->right);
+    }
+    if (current == 0)
+        return result;
+
+    current = result.first->left;
+    while (current) {
+        const QPodPoint &v1 = m_parent->m_vertices.at(m_edges.at(current->data).lower());
+        const QPodPoint &v2 = m_parent->m_vertices.at(m_edges.at(current->data).upper());
+        qint64 d = QT_PREPEND_NAMESPACE(qPointDistanceFromLine)(point, v1, v2);
+        Q_ASSERT(d >= 0);
+        if (d == 0) {
+            result.first = current;
+            current = current->left;
+        } else {
+            current = current->right;
+        }
+    }
+
+    current = result.second->right;
+    while (current) {
+        const QPodPoint &v1 = m_parent->m_vertices.at(m_edges.at(current->data).lower());
+        const QPodPoint &v2 = m_parent->m_vertices.at(m_edges.at(current->data).upper());
+        qint64 d = QT_PREPEND_NAMESPACE(qPointDistanceFromLine)(point, v1, v2);
+        Q_ASSERT(d <= 0);
+        if (d == 0) {
+            result.second = current;
+            current = current->right;
+        } else {
+            current = current->left;
+        }
+    }
+
+    return result;
+}
+
+template <typename T>
+QPair<QRBTree<int>::Node *, QRBTree<int>::Node *> QTriangulator<T>::ComplexToSimple::outerBounds(const QPodPoint &point) const
+{
+    QRBTree<int>::Node *current = m_edgeList.root;
+    QPair<QRBTree<int>::Node *, QRBTree<int>::Node *> result(0, 0);
+
+    while (current) {
+        const QPodPoint &v1 = m_parent->m_vertices.at(m_edges.at(current->data).lower());
+        const QPodPoint &v2 = m_parent->m_vertices.at(m_edges.at(current->data).upper());
+        qint64 d = QT_PREPEND_NAMESPACE(qPointDistanceFromLine)(point, v1, v2);
+        if (d == 0)
+            break;
+        if (d < 0) {
+            result.second = current;
+            current = current->left;
+        } else {
+            result.first = current;
+            current = current->right;
+        }
+    }
+
+    if (!current)
+        return result;
+
+    QRBTree<int>::Node *mid = current;
+
+    current = mid->left;
+    while (current) {
+        const QPodPoint &v1 = m_parent->m_vertices.at(m_edges.at(current->data).lower());
+        const QPodPoint &v2 = m_parent->m_vertices.at(m_edges.at(current->data).upper());
+        qint64 d = QT_PREPEND_NAMESPACE(qPointDistanceFromLine)(point, v1, v2);
+        Q_ASSERT(d >= 0);
+        if (d == 0) {
+            current = current->left;
+        } else {
+            result.first = current;
+            current = current->right;
+        }
+    }
+
+    current = mid->right;
+    while (current) {
+        const QPodPoint &v1 = m_parent->m_vertices.at(m_edges.at(current->data).lower());
+        const QPodPoint &v2 = m_parent->m_vertices.at(m_edges.at(current->data).upper());
+        qint64 d = QT_PREPEND_NAMESPACE(qPointDistanceFromLine)(point, v1, v2);
+        Q_ASSERT(d <= 0);
+        if (d == 0) {
+            current = current->right;
+        } else {
+            result.second = current;
+            current = current->left;
+        }
+    }
+
+    return result;
+}
+
+template <typename T>
+void QTriangulator<T>::ComplexToSimple::splitEdgeListRange(QRBTree<int>::Node *leftmost, QRBTree<int>::Node *rightmost, int vertex, const QIntersectionPoint &intersectionPoint)
+{
+    Q_ASSERT(leftmost && rightmost);
+
+    // Split.
+    for (;;) {
+        const QPodPoint &u = m_parent->m_vertices.at(m_edges.at(leftmost->data).from);
+        const QPodPoint &v = m_parent->m_vertices.at(m_edges.at(leftmost->data).to);
+        Q_ASSERT(intersectionPoint.isOnLine(u, v));
+        const Split split = {vertex, leftmost->data, intersectionPoint.isAccurate()};
+        if (intersectionPoint.xOffset.numerator != 0 || intersectionPoint.yOffset.numerator != 0 || (intersectionPoint.upperLeft != u && intersectionPoint.upperLeft != v))
+            m_splits.add(split);
+        if (leftmost == rightmost)
+            break;
+        leftmost = m_edgeList.next(leftmost);
+    }
+}
+
+template <typename T>
+void QTriangulator<T>::ComplexToSimple::reorderEdgeListRange(QRBTree<int>::Node *leftmost, QRBTree<int>::Node *rightmost)
+{
+    Q_ASSERT(leftmost && rightmost);
+
+    QRBTree<int>::Node *storeLeftmost = leftmost;
+    QRBTree<int>::Node *storeRightmost = rightmost;
+
+    // Reorder.
+    while (leftmost != rightmost) {
+        Edge &left = m_edges.at(leftmost->data);
+        Edge &right = m_edges.at(rightmost->data);
+        qSwap(left.node, right.node);
+        qSwap(leftmost->data, rightmost->data);
+        leftmost = m_edgeList.next(leftmost);
+        if (leftmost == rightmost)
+            break;
+        rightmost = m_edgeList.previous(rightmost);
+    }
+
+    rightmost = m_edgeList.next(storeRightmost);
+    leftmost = m_edgeList.previous(storeLeftmost);
+    if (leftmost)
+        calculateIntersection(leftmost->data, storeLeftmost->data);
+    if (rightmost)
+        calculateIntersection(storeRightmost->data, rightmost->data);
+}
+
+template <typename T>
+void QTriangulator<T>::ComplexToSimple::sortEdgeList(const QPodPoint eventPoint)
+{
+    QIntersectionPoint eventPoint2 = QT_PREPEND_NAMESPACE(qIntersectionPoint)(eventPoint);
+    while (!m_topIntersection.isEmpty() && m_topIntersection.top().intersectionPoint < eventPoint2) {
+        Intersection intersection = m_topIntersection.pop();
+
+        QIntersectionPoint currentIntersectionPoint = intersection.intersectionPoint;
+        int currentVertex = intersection.vertex;
+
+        QRBTree<int>::Node *leftmost = m_edges.at(intersection.leftEdge).node;
+        QRBTree<int>::Node *rightmost = m_edges.at(intersection.rightEdge).node;
+
+        for (;;) {
+            QRBTree<int>::Node *previous = m_edgeList.previous(leftmost);
+            if (!previous)
+                break;
+            const Edge &edge = m_edges.at(previous->data);
+            const QPodPoint &u = m_parent->m_vertices.at((qint32)edge.from);
+            const QPodPoint &v = m_parent->m_vertices.at((qint32)edge.to);
+            if (!currentIntersectionPoint.isOnLine(u, v)) {
+                Q_ASSERT(!currentIntersectionPoint.isAccurate() || qCross(currentIntersectionPoint.upperLeft - u, v - u) != 0);
+                break;
+            }
+            leftmost = previous;
+        }
+
+        for (;;) {
+            QRBTree<int>::Node *next = m_edgeList.next(rightmost);
+            if (!next)
+                break;
+            const Edge &edge = m_edges.at(next->data);
+            const QPodPoint &u = m_parent->m_vertices.at((qint32)edge.from);
+            const QPodPoint &v = m_parent->m_vertices.at((qint32)edge.to);
+            if (!currentIntersectionPoint.isOnLine(u, v)) {
+                Q_ASSERT(!currentIntersectionPoint.isAccurate() || qCross(currentIntersectionPoint.upperLeft - u, v - u) != 0);
+                break;
+            }
+            rightmost = next;
+        }
+
+        Q_ASSERT(leftmost && rightmost);
+        splitEdgeListRange(leftmost, rightmost, currentVertex, currentIntersectionPoint);
+        reorderEdgeListRange(leftmost, rightmost);
+
+        while (!m_topIntersection.isEmpty() && m_topIntersection.top().intersectionPoint <= currentIntersectionPoint)
+            m_topIntersection.pop();
+
+#ifdef Q_TRIANGULATOR_DEBUG
+        DebugDialog dialog(this, intersection.vertex);
+        dialog.exec();
+#endif
+
+    }
+}
+
+template <typename T>
+void QTriangulator<T>::ComplexToSimple::fillPriorityQueue()
+{
+    m_events.reset();
+    m_events.reserve(m_edges.size() * 2);
+    for (int i = 0; i < m_edges.size(); ++i) {
+        Q_ASSERT(m_edges.at(i).previous == -1 && m_edges.at(i).next == -1);
+        Q_ASSERT(m_edges.at(i).node == 0);
+        Q_ASSERT(m_edges.at(i).pointingUp == m_edges.at(i).originallyPointingUp);
+        Q_ASSERT(m_edges.at(i).pointingUp == (m_parent->m_vertices.at(m_edges.at(i).to) < m_parent->m_vertices.at(m_edges.at(i).from)));
+        // Ignore zero-length edges.
+        if (m_parent->m_vertices.at(m_edges.at(i).to) != m_parent->m_vertices.at(m_edges.at(i).from)) {
+            QPodPoint upper = m_parent->m_vertices.at(m_edges.at(i).upper());
+            QPodPoint lower = m_parent->m_vertices.at(m_edges.at(i).lower());
+            Event upperEvent = {{upper.x, upper.y}, Event::Upper, i};
+            Event lowerEvent = {{lower.x, lower.y}, Event::Lower, i};
+            m_events.add(upperEvent);
+            m_events.add(lowerEvent);
+        }
+    }
+    //qSort(m_events.data(), m_events.data() + m_events.size());
+    sort(m_events.data(), m_events.size());
+}
+
+template <typename T>
+void QTriangulator<T>::ComplexToSimple::calculateIntersections()
+{
+    fillPriorityQueue();
+
+    Q_ASSERT(m_topIntersection.empty());
+    Q_ASSERT(m_edgeList.root == 0);
+
+    // Find all intersection points.
+    while (!m_events.isEmpty()) {
+        Event event = m_events.last();
+        sortEdgeList(event.point);
+
+        // Find all edges in the edge list that contain the current vertex and mark them to be split later.
+        QPair<QRBTree<int>::Node *, QRBTree<int>::Node *> range = bounds(event.point);
+        QRBTree<int>::Node *leftNode = range.first ? m_edgeList.previous(range.first) : 0;
+        int vertex = (event.type == Event::Upper ? m_edges.at(event.edge).upper() : m_edges.at(event.edge).lower());
+        QIntersectionPoint eventPoint = QT_PREPEND_NAMESPACE(qIntersectionPoint)(event.point);
+
+        if (range.first != 0) {
+            splitEdgeListRange(range.first, range.second, vertex, eventPoint);
+            reorderEdgeListRange(range.first, range.second);
+        }
+
+        // Handle the edges with start or end point in the current vertex.
+        while (!m_events.isEmpty() && m_events.last().point == event.point) {
+            event = m_events.last();
+            m_events.pop_back();
+            int i = event.edge;
+
+            if (m_edges.at(i).node) {
+                // Remove edge from edge list.
+                Q_ASSERT(event.type == Event::Lower);
+                QRBTree<int>::Node *left = m_edgeList.previous(m_edges.at(i).node);
+                QRBTree<int>::Node *right = m_edgeList.next(m_edges.at(i).node);
+                m_edgeList.deleteNode(m_edges.at(i).node);
+                if (!left || !right)
+                    continue;
+                calculateIntersection(left->data, right->data);
+            } else {
+                // Insert edge into edge list.
+                Q_ASSERT(event.type == Event::Upper);
+                QRBTree<int>::Node *left = searchEdgeLeftOf(i, leftNode);
+                m_edgeList.attachAfter(left, m_edges.at(i).node = m_edgeList.newNode());
+                m_edges.at(i).node->data = i;
+                QRBTree<int>::Node *right = m_edgeList.next(m_edges.at(i).node);
+                if (left)
+                    calculateIntersection(left->data, i);
+                if (right)
+                    calculateIntersection(i, right->data);
+            }
+        }
+        while (!m_topIntersection.isEmpty() && m_topIntersection.top().intersectionPoint <= eventPoint)
+            m_topIntersection.pop();
+#ifdef Q_TRIANGULATOR_DEBUG
+        DebugDialog dialog(this, vertex);
+        dialog.exec();
+#endif
+    }
+    m_processedEdgePairs.clear();
+}
+
+// Split an edge into two pieces at the given point.
+// The upper piece is pushed to the end of the 'm_edges' vector.
+// The lower piece replaces the old edge.
+// Return the edge whose 'from' is 'pointIndex'.
+template <typename T>
+int QTriangulator<T>::ComplexToSimple::splitEdge(int splitIndex)
+{
+    const Split &split = m_splits.at(splitIndex);
+    Edge &lowerEdge = m_edges.at(split.edge);
+    Q_ASSERT(lowerEdge.node == 0);
+    Q_ASSERT(lowerEdge.previous == -1 && lowerEdge.next == -1);
+
+    if (lowerEdge.from == split.vertex)
+        return split.edge;
+    if (lowerEdge.to == split.vertex)
+        return lowerEdge.next;
+
+    // Check that angle >= 90 degrees.
+    //Q_ASSERT(qDot(m_points.at(m_edges.at(edgeIndex).from) - m_points.at(pointIndex),
+    //    m_points.at(m_edges.at(edgeIndex).to) - m_points.at(pointIndex)) <= 0);
+
+    Edge upperEdge = lowerEdge;
+    upperEdge.mayIntersect |= !split.accurate; // The edge may have been split before at an inaccurate split point.
+    lowerEdge.mayIntersect = !split.accurate;
+    if (lowerEdge.pointingUp) {
+        lowerEdge.to = upperEdge.from = split.vertex;
+        m_edges.add(upperEdge);
+        return m_edges.size() - 1;
+    } else {
+        lowerEdge.from = upperEdge.to = split.vertex;
+        m_edges.add(upperEdge);
+        return split.edge;
+    }
+}
+
+template <typename T>
+bool QTriangulator<T>::ComplexToSimple::splitEdgesAtIntersections()
+{
+    for (int i = 0; i < m_edges.size(); ++i)
+        m_edges.at(i).mayIntersect = false;
+    bool checkForNewIntersections = false;
+    for (int i = 0; i < m_splits.size(); ++i) {
+        splitEdge(i);
+        checkForNewIntersections |= !m_splits.at(i).accurate;
+    }
+    for (int i = 0; i < m_edges.size(); ++i) {
+        m_edges.at(i).originallyPointingUp = m_edges.at(i).pointingUp =
+            m_parent->m_vertices.at(m_edges.at(i).to) < m_parent->m_vertices.at(m_edges.at(i).from);
+    }
+    m_splits.reset();
+    return checkForNewIntersections;
+}
+
+template <typename T>
+void QTriangulator<T>::ComplexToSimple::insertEdgeIntoVectorIfWanted(ShortArray &orderedEdges, int i)
+{
+    // Edges with zero length should not reach this part.
+    Q_ASSERT(m_parent->m_vertices.at(m_edges.at(i).from) != m_parent->m_vertices.at(m_edges.at(i).to));
+
+    // Skip edges with unwanted winding number.
+    int windingNumber = m_edges.at(i).winding;
+    if (m_edges.at(i).originallyPointingUp)
+        ++windingNumber;
+
+    // Make sure exactly one fill rule is specified.
+    Q_ASSERT(((m_parent->m_hint & QVectorPath::WindingFill) != 0) != ((m_parent->m_hint & QVectorPath::OddEvenFill) != 0));
+
+    if ((m_parent->m_hint & QVectorPath::WindingFill) && windingNumber != 0 && windingNumber != 1)
+        return;
+
+    // Skip cancelling edges.
+    if (!orderedEdges.isEmpty()) {
+        int j = orderedEdges[orderedEdges.size() - 1];
+        // If the last edge is already connected in one end, it should not be cancelled.
+        if (m_edges.at(j).next == -1 && m_edges.at(j).previous == -1
+            && (m_parent->m_vertices.at(m_edges.at(i).from) == m_parent->m_vertices.at(m_edges.at(j).to))
+            && (m_parent->m_vertices.at(m_edges.at(i).to) == m_parent->m_vertices.at(m_edges.at(j).from))) {
+            orderedEdges.removeLast();
+            return;
+        }
+    }
+    orderedEdges.append(i);
+}
+
+template <typename T>
+void QTriangulator<T>::ComplexToSimple::removeUnwantedEdgesAndConnect()
+{
+    Q_ASSERT(m_edgeList.root == 0);
+    // Initialize priority queue.
+    fillPriorityQueue();
+
+    ShortArray orderedEdges;
+
+    while (!m_events.isEmpty()) {
+        Event event = m_events.last();
+        int edgeIndex = event.edge;
+
+        // Check that all the edges in the list crosses the current scanline
+        //if (m_edgeList.root) {
+        //    for (QRBTree<int>::Node *node = m_edgeList.front(m_edgeList.root); node; node = m_edgeList.next(node)) {
+        //        Q_ASSERT(event.point <= m_points.at(m_edges.at(node->data).lower()));
+        //    }
+        //}
+
+        orderedEdges.clear();
+        QPair<QRBTree<int>::Node *, QRBTree<int>::Node *> b = outerBounds(event.point);
+        if (m_edgeList.root) {
+            QRBTree<int>::Node *current = (b.first ? m_edgeList.next(b.first) : m_edgeList.front(m_edgeList.root));
+            // Process edges that are going to be removed from the edge list at the current event point.
+            while (current != b.second) {
+                Q_ASSERT(current);
+                Q_ASSERT(m_edges.at(current->data).node == current);
+                Q_ASSERT(QT_PREPEND_NAMESPACE(qIntersectionPoint)(event.point).isOnLine(m_parent->m_vertices.at(m_edges.at(current->data).from), m_parent->m_vertices.at(m_edges.at(current->data).to)));
+                Q_ASSERT(m_parent->m_vertices.at(m_edges.at(current->data).from) == event.point || m_parent->m_vertices.at(m_edges.at(current->data).to) == event.point);
+                insertEdgeIntoVectorIfWanted(orderedEdges, current->data);
+                current = m_edgeList.next(current);
+            }
+        }
+
+        // Remove edges above the event point, insert edges below the event point.
+        do {
+            event = m_events.last();
+            m_events.pop_back();
+            edgeIndex = event.edge;
+
+            // Edges with zero length should not reach this part.
+            Q_ASSERT(m_parent->m_vertices.at(m_edges.at(edgeIndex).from) != m_parent->m_vertices.at(m_edges.at(edgeIndex).to));
+
+            if (m_edges.at(edgeIndex).node) {
+                Q_ASSERT(event.type == Event::Lower);
+                Q_ASSERT(event.point == m_parent->m_vertices.at(m_edges.at(event.edge).lower()));
+                m_edgeList.deleteNode(m_edges.at(edgeIndex).node);
+            } else {
+                Q_ASSERT(event.type == Event::Upper);
+                Q_ASSERT(event.point == m_parent->m_vertices.at(m_edges.at(event.edge).upper()));
+                QRBTree<int>::Node *left = searchEdgeLeftOf(edgeIndex, b.first);
+                m_edgeList.attachAfter(left, m_edges.at(edgeIndex).node = m_edgeList.newNode());
+                m_edges.at(edgeIndex).node->data = edgeIndex;
+            }
+        } while (!m_events.isEmpty() && m_events.last().point == event.point);
+
+        if (m_edgeList.root) {
+            QRBTree<int>::Node *current = (b.first ? m_edgeList.next(b.first) : m_edgeList.front(m_edgeList.root));
+
+            // Calculate winding number and turn counter-clockwise.
+            int currentWindingNumber = (b.first ? m_edges.at(b.first->data).winding : 0);
+            while (current != b.second) {
+                Q_ASSERT(current);
+                //Q_ASSERT(b.second == 0 || m_edgeList.order(current, b.second) < 0);
+                int i = current->data;
+                Q_ASSERT(m_edges.at(i).node == current);
+
+                // Winding number.
+                int ccwWindingNumber = m_edges.at(i).winding = currentWindingNumber;
+                if (m_edges.at(i).originallyPointingUp) {
+                    --m_edges.at(i).winding;
+                } else {
+                    ++m_edges.at(i).winding;
+                    ++ccwWindingNumber;
+                }
+                currentWindingNumber = m_edges.at(i).winding;
+
+                // Turn counter-clockwise.
+                if ((ccwWindingNumber & 1) == 0) {
+                    Q_ASSERT(m_edges.at(i).previous == -1 && m_edges.at(i).next == -1);
+                    qSwap(m_edges.at(i).from, m_edges.at(i).to);
+                    m_edges.at(i).pointingUp = !m_edges.at(i).pointingUp;
+                }
+
+                current = m_edgeList.next(current);
+            }
+
+            // Process edges that were inserted into the edge list at the current event point.
+            current = (b.second ? m_edgeList.previous(b.second) : m_edgeList.back(m_edgeList.root));
+            while (current != b.first) {
+                Q_ASSERT(current);
+                Q_ASSERT(m_edges.at(current->data).node == current);
+                insertEdgeIntoVectorIfWanted(orderedEdges, current->data);
+                current = m_edgeList.previous(current);
+            }
+        }
+        if (orderedEdges.isEmpty())
+            continue;
+
+        Q_ASSERT((orderedEdges.size() & 1) == 0);
+
+        // Connect edges.
+        // First make sure the first edge point towards the current point.
+        int i;
+        if (m_parent->m_vertices.at(m_edges.at(orderedEdges[0]).from) == event.point) {
+            i = 1;
+            int copy = orderedEdges[0]; // Make copy in case the append() will cause a reallocation.
+            orderedEdges.append(copy);
+        } else {
+            Q_ASSERT(m_parent->m_vertices.at(m_edges.at(orderedEdges[0]).to) == event.point);
+            i = 0;
+        }
+
+        // Remove references to duplicate points. First find the point with lowest index.
+        int pointIndex = INT_MAX;
+        for (int j = i; j < orderedEdges.size(); j += 2) {
+            Q_ASSERT(j + 1 < orderedEdges.size());
+            Q_ASSERT(m_parent->m_vertices.at(m_edges.at(orderedEdges[j]).to) == event.point);
+            Q_ASSERT(m_parent->m_vertices.at(m_edges.at(orderedEdges[j + 1]).from) == event.point);
+            if (m_edges.at(orderedEdges[j]).to < pointIndex)
+                pointIndex = m_edges.at(orderedEdges[j]).to;
+            if (m_edges.at(orderedEdges[j + 1]).from < pointIndex)
+                pointIndex = m_edges.at(orderedEdges[j + 1]).from;
+        }
+
+        for (; i < orderedEdges.size(); i += 2) {
+            // Remove references to duplicate points by making all edges reference one common point.
+            m_edges.at(orderedEdges[i]).to = m_edges.at(orderedEdges[i + 1]).from = pointIndex;
+
+            Q_ASSERT(m_edges.at(orderedEdges[i]).pointingUp || m_edges.at(orderedEdges[i]).previous != -1);
+            Q_ASSERT(!m_edges.at(orderedEdges[i + 1]).pointingUp || m_edges.at(orderedEdges[i + 1]).next != -1);
+
+            m_edges.at(orderedEdges[i]).next = orderedEdges[i + 1];
+            m_edges.at(orderedEdges[i + 1]).previous = orderedEdges[i];
+        }
+    } // end while
+}
+
+template <typename T>
+void QTriangulator<T>::ComplexToSimple::removeUnusedPoints() {
+    QBitArray used(m_parent->m_vertices.size(), false);
+    for (int i = 0; i < m_edges.size(); ++i) {
+        Q_ASSERT((m_edges.at(i).previous == -1) == (m_edges.at(i).next == -1));
+        if (m_edges.at(i).next != -1)
+            used.setBit(m_edges.at(i).from);
+    }
+    QDataBuffer<quint32> newMapping(m_parent->m_vertices.size());
+    newMapping.resize(m_parent->m_vertices.size());
+    int count = 0;
+    for (int i = 0; i < m_parent->m_vertices.size(); ++i) {
+        if (used.at(i)) {
+            m_parent->m_vertices.at(count) = m_parent->m_vertices.at(i);
+            newMapping.at(i) = count;
+            ++count;
+        }
+    }
+    m_parent->m_vertices.resize(count);
+    for (int i = 0; i < m_edges.size(); ++i) {
+        m_edges.at(i).from = newMapping.at(m_edges.at(i).from);
+        m_edges.at(i).to = newMapping.at(m_edges.at(i).to);
+    }
+}
+
+template <typename T>
+bool QTriangulator<T>::ComplexToSimple::CompareEdges::operator () (int i, int j) const
+{
+    int cmp = comparePoints(m_parent->m_parent->m_vertices.at(m_parent->m_edges.at(i).from),
+        m_parent->m_parent->m_vertices.at(m_parent->m_edges.at(j).from));
+    if (cmp == 0) {
+        cmp = comparePoints(m_parent->m_parent->m_vertices.at(m_parent->m_edges.at(i).to),
+            m_parent->m_parent->m_vertices.at(m_parent->m_edges.at(j).to));
+    }
+    return cmp > 0;
+}
+
+template <typename T>
+inline bool QTriangulator<T>::ComplexToSimple::Event::operator < (const Event &other) const
+{
+    if (point == other.point)
+        return type < other.type; // 'Lower' has higher priority than 'Upper'.
+    return other.point < point;
+}
+
+//============================================================================//
+//                QTriangulator::ComplexToSimple::DebugDialog                 //
+//============================================================================//
+
+#ifdef Q_TRIANGULATOR_DEBUG
+template <typename T>
+QTriangulator<T>::ComplexToSimple::DebugDialog::DebugDialog(ComplexToSimple *parent, int currentVertex)
+    : m_parent(parent), m_vertex(currentVertex)
+{
+    QDataBuffer<QPodPoint> &vertices = m_parent->m_parent->m_vertices;
+    if (vertices.isEmpty())
+        return;
+    
+    int minX, maxX, minY, maxY;
+    minX = maxX = vertices.at(0).x;
+    minY = maxY = vertices.at(0).y;
+    for (int i = 1; i < vertices.size(); ++i) {
+        minX = qMin(minX, vertices.at(i).x);
+        maxX = qMax(maxX, vertices.at(i).x);
+        minY = qMin(minY, vertices.at(i).y);
+        maxY = qMax(maxY, vertices.at(i).y);
+    }
+    int w = maxX - minX;
+    int h = maxY - minY;
+    qreal border = qMin(w, h) / 10.0;
+    m_window = QRectF(minX - border, minY - border, (maxX - minX + 2 * border), (maxY - minY + 2 * border));
+}
+
+template <typename T>
+void QTriangulator<T>::ComplexToSimple::DebugDialog::paintEvent(QPaintEvent *)
+{
+    QPainter p(this);
+    p.setRenderHint(QPainter::Antialiasing, true);
+    p.fillRect(rect(), Qt::black);
+    QDataBuffer<QPodPoint> &vertices = m_parent->m_parent->m_vertices;
+    if (vertices.isEmpty())
+        return;
+    
+    qreal halfPointSize = qMin(m_window.width(), m_window.height()) / 300.0;
+    p.setWindow(m_window.toRect());
+
+    p.setPen(Qt::white);
+
+    QDataBuffer<Edge> &edges = m_parent->m_edges;
+    for (int i = 0; i < edges.size(); ++i) {
+        QPodPoint u = vertices.at(edges.at(i).from);
+        QPodPoint v = vertices.at(edges.at(i).to);
+        p.drawLine(u.x, u.y, v.x, v.y);
+    }
+
+    for (int i = 0; i < vertices.size(); ++i) {
+        QPodPoint q = vertices.at(i);
+        p.fillRect(QRectF(q.x - halfPointSize, q.y - halfPointSize, 2 * halfPointSize, 2 * halfPointSize), Qt::red);
+    }
+
+    Qt::GlobalColor colors[6] = {Qt::red, Qt::green, Qt::blue, Qt::cyan, Qt::magenta, Qt::yellow};
+    p.setOpacity(0.5);
+    int count = 0;
+    if (m_parent->m_edgeList.root) {
+        QRBTree<int>::Node *current = m_parent->m_edgeList.front(m_parent->m_edgeList.root);
+        while (current) {
+            p.setPen(colors[count++ % 6]);
+            QPodPoint u = vertices.at(edges.at(current->data).from);
+            QPodPoint v = vertices.at(edges.at(current->data).to);
+            p.drawLine(u.x, u.y, v.x, v.y);
+            current = m_parent->m_edgeList.next(current);
+        }
+    }
+
+    p.setOpacity(1.0);
+    QPodPoint q = vertices.at(m_vertex);
+    p.fillRect(QRectF(q.x - halfPointSize, q.y - halfPointSize, 2 * halfPointSize, 2 * halfPointSize), Qt::green);
+
+    p.setPen(Qt::gray);
+    QDataBuffer<Split> &splits = m_parent->m_splits;
+    for (int i = 0; i < splits.size(); ++i) {
+        QPodPoint q = vertices.at(splits.at(i).vertex);
+        QPodPoint u = vertices.at(edges.at(splits.at(i).edge).from) - q;
+        QPodPoint v = vertices.at(edges.at(splits.at(i).edge).to) - q;
+        qreal uLen = sqrt(qreal(qDot(u, u)));
+        qreal vLen = sqrt(qreal(qDot(v, v)));
+        if (uLen) {
+            u.x *= 2 * halfPointSize / uLen;
+            u.y *= 2 * halfPointSize / uLen;
+        }
+        if (vLen) {
+            v.x *= 2 * halfPointSize / vLen;
+            v.y *= 2 * halfPointSize / vLen;
+        }
+        u += q;
+        v += q;
+        p.drawLine(u.x, u.y, v.x, v.y);        
+    }
+}
+
+template <typename T>
+void QTriangulator<T>::ComplexToSimple::DebugDialog::wheelEvent(QWheelEvent *event)
+{
+    qreal scale = exp(-0.001 * event->delta());
+    QPointF center = m_window.center();
+    QPointF delta = scale * (m_window.bottomRight() - center);
+    m_window = QRectF(center - delta, center + delta);
+    event->accept();
+    update();
+}
+
+template <typename T>
+void QTriangulator<T>::ComplexToSimple::DebugDialog::mouseMoveEvent(QMouseEvent *event)
+{
+    if (event->buttons() & Qt::LeftButton) {
+        QPointF delta = event->pos() - m_lastMousePos;
+        delta.setX(delta.x() * m_window.width() / width());
+        delta.setY(delta.y() * m_window.height() / height());
+        m_window.translate(-delta.x(), -delta.y());
+        m_lastMousePos = event->pos();
+        event->accept();
+        update();
+    }
+}
+
+template <typename T>
+void QTriangulator<T>::ComplexToSimple::DebugDialog::mousePressEvent(QMouseEvent *event)
+{
+    if (event->button() == Qt::LeftButton)
+        m_lastMousePos = event->pos();
+    event->accept();
+}
+
+
+#endif
+
+//============================================================================//
+//                      QTriangulator::SimpleToMonotone                       //
+//============================================================================//
+template <typename T>
+void QTriangulator<T>::SimpleToMonotone::decompose()
+{
+    setupDataStructures();
+    removeZeroLengthEdges();
+    monotoneDecomposition();
+
+    m_parent->m_indices.clear();
+    QBitArray processed(m_edges.size(), false);
+    for (int first = 0; first < m_edges.size(); ++first) {
+        if (processed.at(first))
+            continue;
+        int i = first;
+        do {
+            Q_ASSERT(!processed.at(i));
+            Q_ASSERT(m_edges.at(m_edges.at(i).next).previous == i);
+            m_parent->m_indices.push_back(m_edges.at(i).from);
+            processed.setBit(i);
+            i = m_edges.at(i).next;
+        } while (i != first);
+        if (m_parent->m_indices.size() > 0 && m_parent->m_indices.back() != T(-1)) // Q_TRIANGULATE_END_OF_POLYGON
+            m_parent->m_indices.push_back(T(-1)); // Q_TRIANGULATE_END_OF_POLYGON
+    }
+}
+
+template <typename T>
+void QTriangulator<T>::SimpleToMonotone::setupDataStructures()
+{
+    int i = 0;
+    Edge e;
+    e.node = 0;
+    e.twin = -1;
+
+    while (i + 3 <= m_parent->m_indices.size()) {
+        int start = m_edges.size();
+
+        do {
+            e.from = m_parent->m_indices.at(i);
+            e.type = RegularVertex;
+            e.next = m_edges.size() + 1;
+            e.previous = m_edges.size() - 1;
+            m_edges.add(e);
+            ++i;
+            Q_ASSERT(i < m_parent->m_indices.size());
+        } while (m_parent->m_indices.at(i) != T(-1)); // Q_TRIANGULATE_END_OF_POLYGON
+
+        m_edges.last().next = start;
+        m_edges.at(start).previous = m_edges.size() - 1;
+        ++i; // Skip Q_TRIANGULATE_END_OF_POLYGON.
+    }
+
+    for (i = 0; i < m_edges.size(); ++i) {
+        m_edges.at(i).to = m_edges.at(m_edges.at(i).next).from;
+        m_edges.at(i).pointingUp = m_parent->m_vertices.at(m_edges.at(i).to) < m_parent->m_vertices.at(m_edges.at(i).from);
+        m_edges.at(i).helper = -1; // Not initialized here.
+    }
+}
+
+template <typename T>
+void QTriangulator<T>::SimpleToMonotone::removeZeroLengthEdges()
+{
+    for (int i = 0; i < m_edges.size(); ++i) {
+        if (m_parent->m_vertices.at(m_edges.at(i).from) == m_parent->m_vertices.at(m_edges.at(i).to)) {
+            m_edges.at(m_edges.at(i).previous).next = m_edges.at(i).next;
+            m_edges.at(m_edges.at(i).next).previous = m_edges.at(i).previous;
+            m_edges.at(m_edges.at(i).next).from = m_edges.at(i).from;
+            m_edges.at(i).next = -1; // Mark as removed.
+        }
+    }
+
+    QDataBuffer<int> newMapping(m_edges.size());
+    newMapping.resize(m_edges.size());
+    int count = 0;
+    for (int i = 0; i < m_edges.size(); ++i) {
+        if (m_edges.at(i).next != -1) {
+            m_edges.at(count) = m_edges.at(i);
+            newMapping.at(i) = count;
+            ++count;
+        }
+    }
+    m_edges.resize(count);
+    for (int i = 0; i < m_edges.size(); ++i) {
+        m_edges.at(i).next = newMapping.at(m_edges.at(i).next);
+        m_edges.at(i).previous = newMapping.at(m_edges.at(i).previous);
+    }
+}
+
+template <typename T>
+void QTriangulator<T>::SimpleToMonotone::fillPriorityQueue()
+{
+    m_upperVertex.reset();
+    m_upperVertex.reserve(m_edges.size());
+    for (int i = 0; i < m_edges.size(); ++i)
+        m_upperVertex.add(i);
+    CompareVertices cmp(this);
+    //qSort(m_upperVertex.data(), m_upperVertex.data() + m_upperVertex.size(), cmp);
+    sort(m_upperVertex.data(), m_upperVertex.size(), cmp);
+    //for (int i = 1; i < m_upperVertex.size(); ++i) {
+    //    Q_ASSERT(!cmp(m_upperVertex.at(i), m_upperVertex.at(i - 1)));
+    //}
+}
+
+template <typename T>
+bool QTriangulator<T>::SimpleToMonotone::edgeIsLeftOfEdge(int leftEdgeIndex, int rightEdgeIndex) const
+{
+    const Edge &leftEdge = m_edges.at(leftEdgeIndex);
+    const Edge &rightEdge = m_edges.at(rightEdgeIndex);
+    const QPodPoint &u = m_parent->m_vertices.at(rightEdge.upper());
+    const QPodPoint &l = m_parent->m_vertices.at(rightEdge.lower());
+    qint64 d = QT_PREPEND_NAMESPACE(qPointDistanceFromLine)(m_parent->m_vertices.at(leftEdge.upper()), l, u);
+    // d < 0: left, d > 0: right, d == 0: on top
+    if (d == 0)
+        d = QT_PREPEND_NAMESPACE(qPointDistanceFromLine)(m_parent->m_vertices.at(leftEdge.lower()), l, u);
+    return d < 0;
+}
+
+// Returns the rightmost edge not to the right of the given edge.
+template <typename T>
+QRBTree<int>::Node *QTriangulator<T>::SimpleToMonotone::searchEdgeLeftOfEdge(int edgeIndex) const
+{
+    QRBTree<int>::Node *current = m_edgeList.root;
+    QRBTree<int>::Node *result = 0;
+    while (current) {
+        if (edgeIsLeftOfEdge(edgeIndex, current->data)) {
+            current = current->left;
+        } else {
+            result = current;
+            current = current->right;
+        }
+    }
+    return result;
+}
+
+// Returns the rightmost edge left of the given point.
+template <typename T>
+QRBTree<int>::Node *QTriangulator<T>::SimpleToMonotone::searchEdgeLeftOfPoint(int pointIndex) const
+{
+    QRBTree<int>::Node *current = m_edgeList.root;
+    QRBTree<int>::Node *result = 0;
+    while (current) {
+        const QPodPoint &p1 = m_parent->m_vertices.at(m_edges.at(current->data).lower());
+        const QPodPoint &p2 = m_parent->m_vertices.at(m_edges.at(current->data).upper());
+        qint64 d = QT_PREPEND_NAMESPACE(qPointDistanceFromLine)(m_parent->m_vertices.at(pointIndex), p1, p2);
+        if (d <= 0) {
+            current = current->left;
+        } else {
+            result = current;
+            current = current->right;
+        }
+    }
+    return result;
+}
+
+template <typename T>
+void QTriangulator<T>::SimpleToMonotone::classifyVertex(int i)
+{
+    Edge &e2 = m_edges.at(i);
+    const Edge &e1 = m_edges.at(e2.previous);
+
+    bool startOrSplit = (e1.pointingUp && !e2.pointingUp);
+    bool endOrMerge = (!e1.pointingUp && e2.pointingUp);
+
+    const QPodPoint &p1 = m_parent->m_vertices.at(e1.from);
+    const QPodPoint &p2 = m_parent->m_vertices.at(e2.from);
+    const QPodPoint &p3 = m_parent->m_vertices.at(e2.to);
+    qint64 d = QT_PREPEND_NAMESPACE(qPointDistanceFromLine)(p1, p2, p3);
+    Q_ASSERT(d != 0 || (!startOrSplit && !endOrMerge));
+
+    e2.type = RegularVertex;
+
+    if (m_clockwiseOrder) {
+        if (startOrSplit)
+            e2.type = (d < 0 ? SplitVertex : StartVertex);
+        else if (endOrMerge)
+            e2.type = (d < 0 ? MergeVertex : EndVertex);
+    } else {
+        if (startOrSplit)
+            e2.type = (d > 0 ? SplitVertex : StartVertex);
+        else if (endOrMerge)
+            e2.type = (d > 0 ? MergeVertex : EndVertex);
+    }
+}
+
+template <typename T>
+void QTriangulator<T>::SimpleToMonotone::classifyVertices()
+{
+    for (int i = 0; i < m_edges.size(); ++i)
+        classifyVertex(i);
+}
+
+template <typename T>
+bool QTriangulator<T>::SimpleToMonotone::pointIsInSector(const QPodPoint &p, const QPodPoint &v1, const QPodPoint &v2, const QPodPoint &v3)
+{
+    bool leftOfPreviousEdge = !qPointIsLeftOfLine(p, v2, v1);
+    bool leftOfNextEdge = !qPointIsLeftOfLine(p, v3, v2);
+
+    if (qPointIsLeftOfLine(v1, v2, v3))
+        return leftOfPreviousEdge && leftOfNextEdge;
+    else
+        return leftOfPreviousEdge || leftOfNextEdge;
+}
+
+template <typename T>
+bool QTriangulator<T>::SimpleToMonotone::pointIsInSector(int vertex, int sector)
+{
+    const QPodPoint &center = m_parent->m_vertices.at(m_edges.at(sector).from);
+    // Handle degenerate edges.
+    while (m_parent->m_vertices.at(m_edges.at(vertex).from) == center)
+        vertex = m_edges.at(vertex).next;
+    int next = m_edges.at(sector).next;
+    while (m_parent->m_vertices.at(m_edges.at(next).from) == center)
+        next = m_edges.at(next).next;
+    int previous = m_edges.at(sector).previous;
+    while (m_parent->m_vertices.at(m_edges.at(previous).from) == center)
+        previous = m_edges.at(previous).previous;
+
+    const QPodPoint &p = m_parent->m_vertices.at(m_edges.at(vertex).from);
+    const QPodPoint &v1 = m_parent->m_vertices.at(m_edges.at(previous).from);
+    const QPodPoint &v3 = m_parent->m_vertices.at(m_edges.at(next).from);
+    if (m_clockwiseOrder)
+        return pointIsInSector(p, v3, center, v1);
+    else
+        return pointIsInSector(p, v1, center, v3);
+}
+
+template <typename T>
+int QTriangulator<T>::SimpleToMonotone::findSector(int edge, int vertex)
+{
+    while (!pointIsInSector(vertex, edge)) {
+        edge = m_edges.at(m_edges.at(edge).previous).twin;
+        Q_ASSERT(edge != -1);
+    }
+    return edge;
+}
+
+template <typename T>
+void QTriangulator<T>::SimpleToMonotone::createDiagonal(int lower, int upper)
+{
+    lower = findSector(lower, upper);
+    upper = findSector(upper, lower);
+
+    int prevLower = m_edges.at(lower).previous;
+    int prevUpper = m_edges.at(upper).previous;
+
+    Edge e;
+
+    e.twin = m_edges.size() + 1;
+    e.next = upper;
+    e.previous = prevLower;
+    e.from = m_edges.at(lower).from;
+    e.to = m_edges.at(upper).from;
+    m_edges.at(upper).previous = m_edges.at(prevLower).next = int(m_edges.size());
+    m_edges.add(e);
+
+    e.twin = m_edges.size() - 1;
+    e.next = lower;
+    e.previous = prevUpper;
+    e.from = m_edges.at(upper).from;
+    e.to = m_edges.at(lower).from;
+    m_edges.at(lower).previous = m_edges.at(prevUpper).next = int(m_edges.size());
+    m_edges.add(e);
+}
+
+template <typename T>
+void QTriangulator<T>::SimpleToMonotone::monotoneDecomposition()
+{
+    if (m_edges.isEmpty())
+        return;
+
+    Q_ASSERT(!m_edgeList.root);
+    QDataBuffer<QPair<int, int> > diagonals(m_upperVertex.size());
+
+    int i = 0;
+    for (int index = 1; index < m_edges.size(); ++index) {
+        if (m_parent->m_vertices.at(m_edges.at(index).from) < m_parent->m_vertices.at(m_edges.at(i).from))
+            i = index;
+    }
+    Q_ASSERT(i < m_edges.size());
+    int j = m_edges.at(i).previous;
+    Q_ASSERT(j < m_edges.size());
+    m_clockwiseOrder = qPointIsLeftOfLine(m_parent->m_vertices.at((quint32)m_edges.at(i).from),
+        m_parent->m_vertices.at((quint32)m_edges.at(j).from), m_parent->m_vertices.at((quint32)m_edges.at(i).to));
+
+    classifyVertices();
+    fillPriorityQueue();
+
+    // debug: set helpers explicitly (shouldn't be necessary)
+    //for (int i = 0; i < m_edges.size(); ++i)
+    //    m_edges.at(i).helper = m_edges.at(i).upper();
+
+    while (!m_upperVertex.isEmpty()) {
+        i = m_upperVertex.last();
+        Q_ASSERT(i < m_edges.size());
+        m_upperVertex.pop_back();
+        j = m_edges.at(i).previous;
+        Q_ASSERT(j < m_edges.size());
+
+        QRBTree<int>::Node *leftEdgeNode = 0;
+
+        switch (m_edges.at(i).type) {
+        case RegularVertex:
+            // If polygon interior is to the right of the vertex...
+            if (m_edges.at(i).pointingUp == m_clockwiseOrder) {
+                if (m_edges.at(i).node) {
+                    Q_ASSERT(!m_edges.at(j).node);
+                    if (m_edges.at(m_edges.at(i).helper).type == MergeVertex)
+                        diagonals.add(QPair<int, int>(i, m_edges.at(i).helper));
+                    m_edges.at(j).node = m_edges.at(i).node;
+                    m_edges.at(i).node = 0;
+                    m_edges.at(j).node->data = j;
+                    m_edges.at(j).helper = i;
+                } else if (m_edges.at(j).node) {
+                    Q_ASSERT(!m_edges.at(i).node);
+                    if (m_edges.at(m_edges.at(j).helper).type == MergeVertex)
+                        diagonals.add(QPair<int, int>(i, m_edges.at(j).helper));
+                    m_edges.at(i).node = m_edges.at(j).node;
+                    m_edges.at(j).node = 0;
+                    m_edges.at(i).node->data = i;
+                    m_edges.at(i).helper = i;
+                } else {
+                    qWarning("Inconsistent polygon. (#1)");
+                }
+            } else {
+                leftEdgeNode = searchEdgeLeftOfPoint(m_edges.at(i).from);
+                if (leftEdgeNode) {
+                    if (m_edges.at(m_edges.at(leftEdgeNode->data).helper).type == MergeVertex)
+                        diagonals.add(QPair<int, int>(i, m_edges.at(leftEdgeNode->data).helper));
+                    m_edges.at(leftEdgeNode->data).helper = i;
+                } else {
+                    qWarning("Inconsistent polygon. (#2)");
+                }
+            }
+            break;
+        case SplitVertex:
+            leftEdgeNode = searchEdgeLeftOfPoint(m_edges.at(i).from);
+            if (leftEdgeNode) {
+                diagonals.add(QPair<int, int>(i, m_edges.at(leftEdgeNode->data).helper));
+                m_edges.at(leftEdgeNode->data).helper = i;
+            } else {
+                qWarning("Inconsistent polygon. (#3)");
+            }
+            // Fall through.
+        case StartVertex:
+            if (m_clockwiseOrder) {
+                leftEdgeNode = searchEdgeLeftOfEdge(j);
+                QRBTree<int>::Node *node = m_edgeList.newNode();
+                node->data = j;
+                m_edges.at(j).node = node;
+                m_edges.at(j).helper = i;
+                m_edgeList.attachAfter(leftEdgeNode, node);
+                Q_ASSERT(m_edgeList.validate());
+            } else  {
+                leftEdgeNode = searchEdgeLeftOfEdge(i);
+                QRBTree<int>::Node *node = m_edgeList.newNode();
+                node->data = i;
+                m_edges.at(i).node = node;
+                m_edges.at(i).helper = i;
+                m_edgeList.attachAfter(leftEdgeNode, node);
+                Q_ASSERT(m_edgeList.validate());
+            }
+            break;
+        case MergeVertex:
+            leftEdgeNode = searchEdgeLeftOfPoint(m_edges.at(i).from);
+            if (leftEdgeNode) {
+                if (m_edges.at(m_edges.at(leftEdgeNode->data).helper).type == MergeVertex)
+                    diagonals.add(QPair<int, int>(i, m_edges.at(leftEdgeNode->data).helper));
+                m_edges.at(leftEdgeNode->data).helper = i;
+            } else {
+                qWarning("Inconsistent polygon. (#4)");
+            }
+            // Fall through.
+        case EndVertex:
+            if (m_clockwiseOrder) {
+                if (m_edges.at(m_edges.at(i).helper).type == MergeVertex)
+                    diagonals.add(QPair<int, int>(i, m_edges.at(i).helper));
+                if (m_edges.at(i).node) {
+                    m_edgeList.deleteNode(m_edges.at(i).node);
+                    Q_ASSERT(m_edgeList.validate());
+                } else {
+                    qWarning("Inconsistent polygon. (#5)");
+                }
+            } else {
+                if (m_edges.at(m_edges.at(j).helper).type == MergeVertex)
+                    diagonals.add(QPair<int, int>(i, m_edges.at(j).helper));
+                if (m_edges.at(j).node) {
+                    m_edgeList.deleteNode(m_edges.at(j).node);
+                    Q_ASSERT(m_edgeList.validate());
+                } else {
+                    qWarning("Inconsistent polygon. (#6)");
+                }
+            }
+            break;
+        }
+    }
+
+    for (int i = 0; i < diagonals.size(); ++i)
+        createDiagonal(diagonals.at(i).first, diagonals.at(i).second);
+}
+
+template <typename T>
+bool QTriangulator<T>::SimpleToMonotone::CompareVertices::operator () (int i, int j) const
+{
+    if (m_parent->m_edges.at(i).from == m_parent->m_edges.at(j).from)
+        return m_parent->m_edges.at(i).type > m_parent->m_edges.at(j).type;
+    return m_parent->m_parent->m_vertices.at(m_parent->m_edges.at(i).from) >
+        m_parent->m_parent->m_vertices.at(m_parent->m_edges.at(j).from);
+}
+
+//============================================================================//
+//                     QTriangulator::MonotoneToTriangles                     //
+//============================================================================//
+template <typename T>
+void QTriangulator<T>::MonotoneToTriangles::decompose()
+{
+    QVector<T> result;
+    QDataBuffer<int> stack(m_parent->m_indices.size());
+    m_first = 0;
+    // Require at least three more indices.
+    while (m_first + 3 <= m_parent->m_indices.size()) {
+        m_length = 0;
+        while (m_parent->m_indices.at(m_first + m_length) != T(-1)) { // Q_TRIANGULATE_END_OF_POLYGON
+            ++m_length;
+            Q_ASSERT(m_first + m_length < m_parent->m_indices.size());
+        }
+        if (m_length < 3) {
+            m_first += m_length + 1;
+            continue;
+        }
+
+        int minimum = 0;
+        while (less(next(minimum), minimum))
+            minimum = next(minimum);
+        while (less(previous(minimum), minimum))
+            minimum = previous(minimum);
+
+        stack.reset();
+        stack.add(minimum);
+        int left = previous(minimum);
+        int right = next(minimum);
+        bool stackIsOnLeftSide;
+        bool clockwiseOrder = leftOfEdge(minimum, left, right);
+
+        if (less(left, right)) {
+            stack.add(left);
+            left = previous(left);
+            stackIsOnLeftSide = true;
+        } else {
+            stack.add(right);
+            right = next(right);
+            stackIsOnLeftSide = false;
+        }
+
+        for (int count = 0; count + 2 < m_length; ++count)
+        {
+            Q_ASSERT(stack.size() >= 2);
+            if (less(left, right)) {
+                if (stackIsOnLeftSide == false) {
+                    for (int i = 0; i + 1 < stack.size(); ++i) {
+                        result.push_back(indices(stack.at(i + 1)));
+                        result.push_back(indices(left));
+                        result.push_back(indices(stack.at(i)));
+                    }
+                    stack.first() = stack.last();
+                    stack.resize(1);
+                } else {
+                    while (stack.size() >= 2 && (clockwiseOrder ^ !leftOfEdge(left, stack.at(stack.size() - 2), stack.last()))) {
+                        result.push_back(indices(stack.at(stack.size() - 2)));
+                        result.push_back(indices(left));
+                        result.push_back(indices(stack.last()));
+                        stack.pop_back();
+                    }
+                }
+                stack.add(left);
+                left = previous(left);
+                stackIsOnLeftSide = true;
+            } else {
+                if (stackIsOnLeftSide == true) {
+                    for (int i = 0; i + 1 < stack.size(); ++i) {
+                        result.push_back(indices(stack.at(i)));
+                        result.push_back(indices(right));
+                        result.push_back(indices(stack.at(i + 1)));
+                    }
+                    stack.first() = stack.last();
+                    stack.resize(1);
+                } else {
+                    while (stack.size() >= 2 && (clockwiseOrder ^ !leftOfEdge(right, stack.last(), stack.at(stack.size() - 2)))) {
+                        result.push_back(indices(stack.last()));
+                        result.push_back(indices(right));
+                        result.push_back(indices(stack.at(stack.size() - 2)));
+                        stack.pop_back();
+                    }
+                }
+                stack.add(right);
+                right = next(right);
+                stackIsOnLeftSide = false;
+            }
+        }
+
+        m_first += m_length + 1;
+    }
+    m_parent->m_indices = result;
+}
+
+//============================================================================//
+//                                qTriangulate                                //
+//============================================================================//
+
+QTriangleSet qTriangulate(const qreal *polygon,
+                          int count, uint hint, const QTransform &matrix)
+{
+    QTriangleSet triangleSet;
+    if (QGLExtensions::glExtensions() & QGLExtensions::ElementIndexUint) {
+        QTriangulator<quint32> triangulator;
+        triangulator.initialize(polygon, count, hint, matrix);
+        QVertexSet<quint32> vertexSet = triangulator.triangulate();
+        triangleSet.vertices = vertexSet.vertices;
+        triangleSet.indices.setDataUint(vertexSet.indices);
+
+    } else {
+        QTriangulator<quint16> triangulator;
+        triangulator.initialize(polygon, count, hint, matrix);
+        QVertexSet<quint16> vertexSet = triangulator.triangulate();
+        triangleSet.vertices = vertexSet.vertices;
+        triangleSet.indices.setDataUshort(vertexSet.indices);
+    }
+    return triangleSet;
+}
+
+QTriangleSet qTriangulate(const QVectorPath &path,
+                          const QTransform &matrix, qreal lod)
+{
+    QTriangleSet triangleSet;
+    if (QGLExtensions::glExtensions() & QGLExtensions::ElementIndexUint) {
+        QTriangulator<quint32> triangulator;
+        triangulator.initialize(path, matrix, lod);
+        QVertexSet<quint32> vertexSet = triangulator.triangulate();
+        triangleSet.vertices = vertexSet.vertices;
+        triangleSet.indices.setDataUint(vertexSet.indices);
+    } else {
+        QTriangulator<quint16> triangulator;
+        triangulator.initialize(path, matrix, lod);
+        QVertexSet<quint16> vertexSet = triangulator.triangulate();
+        triangleSet.vertices = vertexSet.vertices;
+        triangleSet.indices.setDataUshort(vertexSet.indices);
+    }
+    return triangleSet;
+}
+
+QTriangleSet qTriangulate(const QPainterPath &path,
+                          const QTransform &matrix, qreal lod)
+{
+    QTriangleSet triangleSet;
+    if (QGLExtensions::glExtensions() & QGLExtensions::ElementIndexUint) {
+        QTriangulator<quint32> triangulator;
+        triangulator.initialize(path, matrix, lod);
+        QVertexSet<quint32> vertexSet = triangulator.triangulate();
+        triangleSet.vertices = vertexSet.vertices;
+        triangleSet.indices.setDataUint(vertexSet.indices);
+    } else {
+        QTriangulator<quint16> triangulator;
+        triangulator.initialize(path, matrix, lod);
+        QVertexSet<quint16> vertexSet = triangulator.triangulate();
+        triangleSet.vertices = vertexSet.vertices;
+        triangleSet.indices.setDataUshort(vertexSet.indices);
+    }
+    return triangleSet;
+}
+
+QPolylineSet qPolyline(const QVectorPath &path,
+                       const QTransform &matrix, qreal lod)
+{
+    QPolylineSet polyLineSet;
+    if (QGLExtensions::glExtensions() & QGLExtensions::ElementIndexUint) {
+        QTriangulator<quint32> triangulator;
+        triangulator.initialize(path, matrix, lod);
+        QVertexSet<quint32> vertexSet = triangulator.polyline();
+        polyLineSet.vertices = vertexSet.vertices;
+        polyLineSet.indices.setDataUint(vertexSet.indices);
+    } else {
+        QTriangulator<quint16> triangulator;
+        triangulator.initialize(path, matrix, lod);
+        QVertexSet<quint16> vertexSet = triangulator.triangulate();
+        polyLineSet.vertices = vertexSet.vertices;
+        polyLineSet.indices.setDataUshort(vertexSet.indices);
+    }
+    return polyLineSet;
+}
+
+QPolylineSet qPolyline(const QPainterPath &path,
+                       const QTransform &matrix, qreal lod)
+{
+    QPolylineSet polyLineSet;
+    if (QGLExtensions::glExtensions() & QGLExtensions::ElementIndexUint) {
+        QTriangulator<quint32> triangulator;
+        triangulator.initialize(path, matrix, lod);
+        QVertexSet<quint32> vertexSet = triangulator.polyline();
+        polyLineSet.vertices = vertexSet.vertices;
+        polyLineSet.indices.setDataUint(vertexSet.indices);
+    } else {
+        QTriangulator<quint16> triangulator;
+        triangulator.initialize(path, matrix, lod);
+        QVertexSet<quint16> vertexSet = triangulator.triangulate();
+        polyLineSet.vertices = vertexSet.vertices;
+        polyLineSet.indices.setDataUshort(vertexSet.indices);
+    }
+    return polyLineSet;
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/gl2paintengineex/qtriangulator_p.h b/src/opengl/gl2paintengineex/qtriangulator_p.h
new file mode 100644
index 0000000000..a205b923e9
--- /dev/null
+++ b/src/opengl/gl2paintengineex/qtriangulator_p.h
@@ -0,0 +1,148 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QTRIANGULATOR_P_H
+#define QTRIANGULATOR_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qvector.h>
+#include <QtGui/private/qvectorpath_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QVertexIndexVector
+{
+public:
+    enum Type {
+        UnsignedInt,
+        UnsignedShort
+    };
+
+    inline Type type() const { return t; }
+
+    inline void setDataUint(const QVector<quint32> &data)
+    {
+        t = UnsignedInt;
+        indices32 = data;
+    }
+
+    inline void setDataUshort(const QVector<quint16> &data)
+    {
+        t = UnsignedShort;
+        indices16 = data;
+    }
+
+    inline const void* data() const
+    {
+        if (t == UnsignedInt)
+            return indices32.data();
+        return indices16.data();
+    }
+
+    inline int size() const
+    {
+        if (t == UnsignedInt)
+            return indices32.size();
+        return indices16.size();
+    }
+
+    inline QVertexIndexVector &operator = (const QVertexIndexVector &other)
+    {
+         if (t == UnsignedInt)
+           indices32 = other.indices32;
+         else
+           indices16 = other.indices16;
+
+         return *this;
+    }
+
+private:
+
+    Type t;
+    QVector<quint32> indices32;
+    QVector<quint16> indices16;
+};
+
+struct QTriangleSet
+{
+    inline QTriangleSet() { }
+    inline QTriangleSet(const QTriangleSet &other) : vertices(other.vertices), indices(other.indices) { }
+    QTriangleSet &operator = (const QTriangleSet &other) {vertices = other.vertices; indices = other.indices; return *this;}
+
+    // The vertices of a triangle are given by: (x[i[n]], y[i[n]]), (x[j[n]], y[j[n]]), (x[k[n]], y[k[n]]), n = 0, 1, ...
+    QVector<qreal> vertices; // [x[0], y[0], x[1], y[1], x[2], ...]
+    QVertexIndexVector indices; // [i[0], j[0], k[0], i[1], j[1], k[1], i[2], ...]
+};
+
+struct QPolylineSet
+{
+    inline QPolylineSet() { }
+    inline QPolylineSet(const QPolylineSet &other) : vertices(other.vertices), indices(other.indices) { }
+    QPolylineSet &operator = (const QPolylineSet &other) {vertices = other.vertices; indices = other.indices; return *this;}
+
+    QVector<qreal> vertices; // [x[0], y[0], x[1], y[1], x[2], ...]
+    QVertexIndexVector indices;
+};
+
+// The vertex coordinates of the returned triangle set will be rounded to a grid with a mesh size
+// of 1/32. The polygon is first transformed, then scaled by 32, the coordinates are rounded to
+// integers, the polygon is triangulated, and then scaled back by 1/32.
+// 'hint' should be a combination of QVectorPath::Hints.
+// 'lod' is the level of detail. Default is 1. Curves are split into more lines when 'lod' is higher.
+QTriangleSet qTriangulate(const qreal *polygon, int count, uint hint = QVectorPath::PolygonHint | QVectorPath::OddEvenFill, const QTransform &matrix = QTransform());
+QTriangleSet qTriangulate(const QVectorPath &path, const QTransform &matrix = QTransform(), qreal lod = 1);
+QTriangleSet qTriangulate(const QPainterPath &path, const QTransform &matrix = QTransform(), qreal lod = 1);
+QPolylineSet qPolyline(const QVectorPath &path, const QTransform &matrix = QTransform(), qreal lod = 1);
+QPolylineSet qPolyline(const QPainterPath &path, const QTransform &matrix = QTransform(), qreal lod = 1);
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/opengl/opengl.pro b/src/opengl/opengl.pro
new file mode 100644
index 0000000000..e7c1c446de
--- /dev/null
+++ b/src/opengl/opengl.pro
@@ -0,0 +1,181 @@
+TARGET     = QtOpenGL
+QPRO_PWD   = $$PWD
+QT         = core gui
+DEFINES   += QT_BUILD_OPENGL_LIB
+DEFINES   += QT_NO_USING_NAMESPACE
+win32-msvc*|win32-icc:QMAKE_LFLAGS += /BASE:0x63000000
+solaris-cc*:QMAKE_CXXFLAGS_RELEASE -= -O2
+irix-cc*:QMAKE_CXXFLAGS += -no_prelink -ptused
+
+unix|win32-g++*:QMAKE_PKGCONFIG_REQUIRES = QtCore QtGui
+
+include(../qbase.pri)
+
+!win32:!embedded:!mac:!symbian:!qpa:CONFIG	   += x11
+contains(QT_CONFIG, opengl):CONFIG += opengl
+contains(QT_CONFIG, opengles1):CONFIG += opengles1
+contains(QT_CONFIG, opengles2):CONFIG += opengles2
+contains(QT_CONFIG, egl):CONFIG += egl
+
+HEADERS += qgl.h \
+           qgl_p.h \
+           qglcolormap.h \
+           qglfunctions.h \
+           qglpixelbuffer.h \
+           qglpixelbuffer_p.h \
+           qglframebufferobject.h  \
+           qglframebufferobject_p.h  \
+           qglextensions_p.h \
+           qglpaintdevice_p.h \
+           qglbuffer.h \
+
+
+SOURCES += qgl.cpp \
+           qglcolormap.cpp \
+           qglfunctions.cpp \
+           qglpixelbuffer.cpp \
+           qglframebufferobject.cpp \
+           qglextensions.cpp \
+           qglpaintdevice.cpp \
+           qglbuffer.cpp \
+
+
+!contains(QT_CONFIG, opengles2) {
+    HEADERS += qpaintengine_opengl_p.h
+    SOURCES += qpaintengine_opengl.cpp
+}
+
+!contains(QT_CONFIG, opengles1) {
+    HEADERS +=  qglshaderprogram.h \
+                qglpixmapfilter_p.h  \
+                qgraphicsshadereffect_p.h \
+                qgraphicssystem_gl_p.h \
+                qwindowsurface_gl_p.h \
+                qpixmapdata_gl_p.h \
+                gl2paintengineex/qglgradientcache_p.h \
+                gl2paintengineex/qglengineshadermanager_p.h \
+                gl2paintengineex/qgl2pexvertexarray_p.h \
+                gl2paintengineex/qpaintengineex_opengl2_p.h \
+                gl2paintengineex/qglengineshadersource_p.h \
+                gl2paintengineex/qglcustomshaderstage_p.h \
+                gl2paintengineex/qtriangulatingstroker_p.h \
+                gl2paintengineex/qtriangulator_p.h \
+                gl2paintengineex/qtextureglyphcache_gl_p.h \
+                gl2paintengineex/qglshadercache_p.h \
+                gl2paintengineex/qglshadercache_meego_p.h
+
+    SOURCES +=  qglshaderprogram.cpp \
+                qglpixmapfilter.cpp \
+                qgraphicsshadereffect.cpp \
+                qgraphicssystem_gl.cpp \
+                qwindowsurface_gl.cpp \
+                qpixmapdata_gl.cpp \
+                gl2paintengineex/qglgradientcache.cpp \
+                gl2paintengineex/qglengineshadermanager.cpp \
+                gl2paintengineex/qgl2pexvertexarray.cpp \
+                gl2paintengineex/qpaintengineex_opengl2.cpp \
+                gl2paintengineex/qglcustomshaderstage.cpp \
+                gl2paintengineex/qtriangulatingstroker.cpp \
+                gl2paintengineex/qtriangulator.cpp \
+                gl2paintengineex/qtextureglyphcache_gl.cpp
+
+}
+
+qpa {
+    SOURCES +=  qgl_qpa.cpp \
+                qglpixelbuffer_stub.cpp
+}
+
+x11 {
+    contains(QT_CONFIG, egl) {
+        SOURCES +=  qgl_x11egl.cpp \
+                    qglpixelbuffer_egl.cpp \
+                    qgl_egl.cpp \
+                    qpixmapdata_x11gl_egl.cpp \
+                    qwindowsurface_x11gl.cpp
+
+        HEADERS +=  qgl_egl_p.h \
+                    qpixmapdata_x11gl_p.h \
+                    qwindowsurface_x11gl_p.h
+
+    } else {
+        SOURCES +=  qgl_x11.cpp \
+                    qglpixelbuffer_x11.cpp
+    }
+
+    contains(QT_CONFIG, fontconfig) {
+        contains(QT_CONFIG, system-freetype) {
+            embedded:CONFIG += opentype
+            # pull in the proper freetype2 include directory
+            include($$QT_SOURCE_TREE/config.tests/unix/freetype/freetype.pri)
+            LIBS_PRIVATE += -lfreetype
+        } else {
+            ### Note: how does this compile with a non-system freetype?
+	    # This probably does not compile
+        }
+    } else {
+        DEFINES *= QT_NO_FREETYPE
+    }
+
+    LIBS_PRIVATE += $$QMAKE_LIBS_DYNLOAD
+}
+
+mac:!qpa {
+    OBJECTIVE_SOURCES += qgl_mac.mm \
+                         qglpixelbuffer_mac.mm
+    LIBS_PRIVATE += -framework AppKit -framework Carbon
+}
+win32:!wince*: {
+    DEFINES += QT_NO_EGL
+    SOURCES += qgl_win.cpp \
+	           qglpixelbuffer_win.cpp
+}
+wince*: {
+    SOURCES += qgl_wince.cpp \
+               qglpixelbuffer_egl.cpp \
+               qgl_egl.cpp
+
+    HEADERS += qgl_egl_p.h
+}
+
+embedded {
+    SOURCES += qgl_qws.cpp \
+               qglpixelbuffer_egl.cpp \
+               qglscreen_qws.cpp \
+               qglwindowsurface_qws.cpp \
+               qgl_egl.cpp
+
+    HEADERS += qglscreen_qws.h \
+               qglwindowsurface_qws_p.h \
+               qgl_egl_p.h
+
+    contains(QT_CONFIG, fontconfig) {
+        include($$QT_SOURCE_TREE/config.tests/unix/freetype/freetype.pri)
+    } else {
+       DEFINES *= QT_NO_FREETYPE
+    }
+}
+
+symbian {
+    DEFINES += QGL_USE_TEXTURE_POOL QGL_NO_PRESERVED_SWAP
+    SOURCES -= qpixmapdata_gl.cpp
+    SOURCES += qgl_symbian.cpp \
+               qpixmapdata_poolgl.cpp \
+               qglpixelbuffer_egl.cpp \
+               qgl_egl.cpp \
+               qgltexturepool.cpp
+
+    HEADERS += qgl_egl_p.h \
+               qgltexturepool_p.h
+
+    contains(QT_CONFIG, freetype) {
+        DEFINES += QT_NO_FONTCONFIG
+        INCLUDEPATH += \
+            ../3rdparty/freetype/src \
+            ../3rdparty/freetype/include
+    }
+
+    symbian:TARGET.UID3 = 0x2002131A
+}
+
+INCLUDEPATH += ../3rdparty/harfbuzz/src
diff --git a/src/opengl/opengl.pro.user.2.1pre1 b/src/opengl/opengl.pro.user.2.1pre1
new file mode 100644
index 0000000000..0c38724b0b
--- /dev/null
+++ b/src/opengl/opengl.pro.user.2.1pre1
@@ -0,0 +1,83 @@
+<!DOCTYPE QtCreatorProject>
+<qtcreator>
+ <data>
+  <variable>ProjectExplorer.Project.ActiveTarget</variable>
+  <value type="int">0</value>
+ </data>
+ <data>
+  <variable>ProjectExplorer.Project.EditorSettings</variable>
+  <valuemap type="QVariantMap">
+   <value key="EditorConfiguration.Codec" type="QByteArray">UTF-8</value>
+  </valuemap>
+ </data>
+ <data>
+  <variable>ProjectExplorer.Project.Target.0</variable>
+  <valuemap type="QVariantMap">
+   <value key="ProjectExplorer.ProjectConfiguration.DisplayName" type="QString">Desktop</value>
+   <value key="ProjectExplorer.ProjectConfiguration.Id" type="QString">Qt4ProjectManager.Target.DesktopTarget</value>
+   <value key="ProjectExplorer.Target.ActiveBuildConfiguration" type="int">0</value>
+   <value key="ProjectExplorer.Target.ActiveRunConfiguration" type="int">0</value>
+   <valuemap key="ProjectExplorer.Target.BuildConfiguration.0" type="QVariantMap">
+    <valuemap key="ProjectExplorer.BuildConfiguration.BuildStep.0" type="QVariantMap">
+     <value key="ProjectExplorer.ProjectConfiguration.DisplayName" type="QString">qmake</value>
+     <value key="ProjectExplorer.ProjectConfiguration.Id" type="QString">QtProjectManager.QMakeBuildStep</value>
+     <valuelist key="QtProjectManager.QMakeBuildStep.QMakeArguments" type="QVariantList">
+      <value type="QString">QMAKE_ABSOLUTE_SOURCE_PATH=/home/jlind/dev/qt/lighthouse-master/src/opengl</value>
+     </valuelist>
+    </valuemap>
+    <valuemap key="ProjectExplorer.BuildConfiguration.BuildStep.1" type="QVariantMap">
+     <value key="ProjectExplorer.ProjectConfiguration.DisplayName" type="QString">Make</value>
+     <value key="ProjectExplorer.ProjectConfiguration.Id" type="QString">Qt4ProjectManager.MakeStep</value>
+     <value key="Qt4ProjectManager.MakeStep.Clean" type="bool">false</value>
+     <valuelist key="Qt4ProjectManager.MakeStep.MakeArguments" type="QVariantList">
+      <value type="QString">-j9</value>
+     </valuelist>
+     <value key="Qt4ProjectManager.MakeStep.MakeCommand" type="QString"></value>
+    </valuemap>
+    <value key="ProjectExplorer.BuildConfiguration.BuildStepsCount" type="int">2</value>
+    <valuemap key="ProjectExplorer.BuildConfiguration.CleanStep.0" type="QVariantMap">
+     <value key="ProjectExplorer.ProjectConfiguration.DisplayName" type="QString">Make</value>
+     <value key="ProjectExplorer.ProjectConfiguration.Id" type="QString">Qt4ProjectManager.MakeStep</value>
+     <value key="Qt4ProjectManager.MakeStep.Clean" type="bool">true</value>
+     <valuelist key="Qt4ProjectManager.MakeStep.MakeArguments" type="QVariantList">
+      <value type="QString">clean</value>
+     </valuelist>
+     <value key="Qt4ProjectManager.MakeStep.MakeCommand" type="QString"></value>
+    </valuemap>
+    <value key="ProjectExplorer.BuildConfiguration.CleanStepsCount" type="int">1</value>
+    <value key="ProjectExplorer.BuildConfiguration.ClearSystemEnvironment" type="bool">false</value>
+    <valuelist key="ProjectExplorer.BuildConfiguration.UserEnvironmentChanges" type="QVariantList"/>
+    <value key="ProjectExplorer.ProjectConfiguration.DisplayName" type="QString">Debug</value>
+    <value key="ProjectExplorer.ProjectConfiguration.Id" type="QString">Qt4ProjectManager.Qt4BuildConfiguration</value>
+    <value key="Qt4ProjectManager.Qt4BuildConfiguration.BuildConfiguration" type="int">2</value>
+    <value key="Qt4ProjectManager.Qt4BuildConfiguration.BuildDirectory" type="QString">/home/jlind/builds/master-lighthouse/src/opengl</value>
+    <value key="Qt4ProjectManager.Qt4BuildConfiguration.QtVersionId" type="int">23</value>
+    <value key="Qt4ProjectManager.Qt4BuildConfiguration.ToolChain" type="int">0</value>
+    <value key="Qt4ProjectManager.Qt4BuildConfiguration.UseShadowBuild" type="bool">true</value>
+   </valuemap>
+   <value key="ProjectExplorer.Target.BuildConfigurationCount" type="int">1</value>
+   <valuemap key="ProjectExplorer.Target.RunConfiguration.0" type="QVariantMap">
+    <value key="ProjectExplorer.ProjectConfiguration.DisplayName" type="QString">headers</value>
+    <value key="ProjectExplorer.ProjectConfiguration.Id" type="QString">Qt4ProjectManager.Qt4RunConfiguration</value>
+    <value key="Qt4ProjectManager.Qt4RunConfiguration.BaseEnvironmentBase" type="int">2</value>
+    <valuelist key="Qt4ProjectManager.Qt4RunConfiguration.CommandLineArguments" type="QVariantList"/>
+    <value key="Qt4ProjectManager.Qt4RunConfiguration.ProFile" type="QString">../../../../../builds/master-lighthouse/include/QtOpenGL/headers.pri</value>
+    <value key="Qt4ProjectManager.Qt4RunConfiguration.UseDyldImageSuffix" type="bool">false</value>
+    <value key="Qt4ProjectManager.Qt4RunConfiguration.UseTerminal" type="bool">false</value>
+    <valuelist key="Qt4ProjectManager.Qt4RunConfiguration.UserEnvironmentChanges" type="QVariantList"/>
+    <value key="Qt4ProjectManager.Qt4RunConfiguration.UserSetName" type="bool">false</value>
+    <value key="Qt4ProjectManager.Qt4RunConfiguration.UserSetWorkingDirectory" type="bool">false</value>
+    <value key="Qt4ProjectManager.Qt4RunConfiguration.UserWorkingDirectory" type="QString"></value>
+   </valuemap>
+   <value key="ProjectExplorer.Target.RunConfigurationCount" type="int">1</value>
+  </valuemap>
+ </data>
+ <data>
+  <variable>ProjectExplorer.Project.TargetCount</variable>
+  <value type="int">1</value>
+ </data>
+ <data>
+  <variable>ProjectExplorer.Project.Updater.FileVersion</variable>
+  <value type="int">4</value>
+ </data>
+</qtcreator>
diff --git a/src/opengl/qgl.cpp b/src/opengl/qgl.cpp
new file mode 100644
index 0000000000..057fb55e2c
--- /dev/null
+++ b/src/opengl/qgl.cpp
@@ -0,0 +1,6057 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qapplication.h"
+#include "qplatformdefs.h"
+#include "qgl.h"
+#include <qdebug.h>
+
+#if defined(Q_WS_X11)
+#include "private/qt_x11_p.h"
+#include "private/qpixmap_x11_p.h"
+#define INT32 dummy_INT32
+#define INT8 dummy_INT8
+#ifdef QT_NO_EGL
+# include <GL/glx.h>
+#endif
+#undef INT32
+#undef INT8
+#include "qx11info_x11.h"
+#elif defined(Q_WS_MAC)
+# include <private/qt_mac_p.h>
+#endif
+
+#include <qdatetime.h>
+
+#include <stdlib.h> // malloc
+
+#include "qpixmap.h"
+#include "qimage.h"
+#include "qgl_p.h"
+
+#if !defined(QT_OPENGL_ES_1)
+#include "gl2paintengineex/qpaintengineex_opengl2_p.h"
+#include <private/qwindowsurface_gl_p.h>
+#endif
+
+#ifndef QT_OPENGL_ES_2
+#include <private/qpaintengine_opengl_p.h>
+#endif
+
+#ifdef Q_WS_QWS
+#include <private/qglwindowsurface_qws_p.h>
+#endif
+
+#ifdef Q_WS_QPA
+#include <QtGui/QPlatformGLContext>
+#endif
+
+#include <qglpixelbuffer.h>
+#include <qglframebufferobject.h>
+
+#include <private/qimage_p.h>
+#include <private/qpixmapdata_p.h>
+#include <private/qpixmapdata_gl_p.h>
+#include <private/qglpixelbuffer_p.h>
+#include <private/qimagepixmapcleanuphooks_p.h>
+#include "qcolormap.h"
+#include "qfile.h"
+#include "qlibrary.h"
+#include <qmutex.h>
+
+#if defined(QT_OPENGL_ES) && !defined(QT_NO_EGL)
+#include <EGL/egl.h>
+#endif
+#ifdef QGL_USE_TEXTURE_POOL
+#include <private/qgltexturepool_p.h>
+#endif
+
+// #define QT_GL_CONTEXT_RESOURCE_DEBUG
+
+QT_BEGIN_NAMESPACE
+
+#if defined(Q_WS_X11) || defined(Q_WS_MAC) || defined(Q_WS_QWS) || defined(Q_WS_QPA) || defined(Q_OS_SYMBIAN)
+QGLExtensionFuncs QGLContextPrivate::qt_extensionFuncs;
+#endif
+
+#ifdef Q_WS_X11
+extern const QX11Info *qt_x11Info(const QPaintDevice *pd);
+#endif
+
+struct QGLThreadContext {
+    ~QGLThreadContext() {
+        if (context)
+            context->doneCurrent();
+    }
+    QGLContext *context;
+};
+
+#ifndef Q_WS_QPA
+static QThreadStorage<QGLThreadContext *> qgl_context_storage;
+#endif
+
+Q_GLOBAL_STATIC(QGLFormat, qgl_default_format)
+
+class QGLDefaultOverlayFormat: public QGLFormat
+{
+public:
+    inline QGLDefaultOverlayFormat()
+    {
+        setOption(QGL::FormatOption(0xffff << 16)); // turn off all options
+        setOption(QGL::DirectRendering);
+        setPlane(1);
+    }
+};
+Q_GLOBAL_STATIC(QGLDefaultOverlayFormat, defaultOverlayFormatInstance)
+
+Q_GLOBAL_STATIC(QGLSignalProxy, theSignalProxy)
+QGLSignalProxy *QGLSignalProxy::instance()
+{
+    QGLSignalProxy *proxy = theSignalProxy();
+    if (proxy && proxy->thread() != qApp->thread()) {
+        if (proxy->thread() == QThread::currentThread())
+            proxy->moveToThread(qApp->thread());
+    }
+    return proxy;
+}
+
+
+class QGLEngineSelector
+{
+public:
+    QGLEngineSelector() : engineType(QPaintEngine::MaxUser)
+    {
+    }
+
+    void setPreferredPaintEngine(QPaintEngine::Type type) {
+        if (type == QPaintEngine::OpenGL || type == QPaintEngine::OpenGL2)
+            engineType = type;
+    }
+
+    QPaintEngine::Type preferredPaintEngine() {
+#ifdef Q_WS_MAC
+        // The ATI X1600 driver for Mac OS X does not support return
+        // values from functions in GLSL. Since working around this in
+        // the GL2 engine would require a big, ugly rewrite, we're
+        // falling back to the GL 1 engine..
+        static bool mac_x1600_check_done = false;
+        if (!mac_x1600_check_done) {
+            QGLTemporaryContext *tmp = 0;
+            if (!QGLContext::currentContext())
+                tmp = new QGLTemporaryContext();
+            if (strstr((char *) glGetString(GL_RENDERER), "X1600"))
+                engineType = QPaintEngine::OpenGL;
+            if (tmp)
+                delete tmp;
+            mac_x1600_check_done = true;
+        }
+#endif
+        if (engineType == QPaintEngine::MaxUser) {
+            // No user-set engine - use the defaults
+#if defined(QT_OPENGL_ES_2)
+            engineType = QPaintEngine::OpenGL2;
+#else
+            // We can't do this in the constructor for this object because it
+            // needs to be called *before* the QApplication constructor.
+            // Also check for the FragmentShader extension in conjunction with
+            // the 2.0 version flag, to cover the case where we export the display
+            // from an old GL 1.1 server to a GL 2.x client. In that case we can't
+            // use GL 2.0.
+            if ((QGLFormat::openGLVersionFlags() & QGLFormat::OpenGL_Version_2_0)
+                && (QGLExtensions::glExtensions() & QGLExtensions::FragmentShader)
+                && qgetenv("QT_GL_USE_OPENGL1ENGINE").isEmpty())
+                engineType = QPaintEngine::OpenGL2;
+            else
+                engineType = QPaintEngine::OpenGL;
+#endif
+        }
+        return engineType;
+    }
+
+private:
+    QPaintEngine::Type engineType;
+};
+
+Q_GLOBAL_STATIC(QGLEngineSelector, qgl_engine_selector)
+
+
+bool qt_gl_preferGL2Engine()
+{
+    return qgl_engine_selector()->preferredPaintEngine() == QPaintEngine::OpenGL2;
+}
+
+
+/*!
+    \namespace QGL
+    \inmodule QtOpenGL
+
+    \brief The QGL namespace specifies miscellaneous identifiers used
+    in the Qt OpenGL module.
+
+    \ingroup painting-3D
+*/
+
+/*!
+    \enum QGL::FormatOption
+
+    This enum specifies the format options that can be used to configure an OpenGL
+    context. These are set using QGLFormat::setOption().
+
+    \value DoubleBuffer      Specifies the use of double buffering.
+    \value DepthBuffer       Enables the use of a depth buffer.
+    \value Rgba              Specifies that the context should use RGBA as its pixel format.
+    \value AlphaChannel      Enables the use of an alpha channel.
+    \value AccumBuffer       Enables the use of an accumulation buffer.
+    \value StencilBuffer     Enables the use of a stencil buffer.
+    \value StereoBuffers     Enables the use of a stereo buffers for use with visualization hardware.
+    \value DirectRendering   Specifies that the context is used for direct rendering to a display.
+    \value HasOverlay        Enables the use of an overlay.
+    \value SampleBuffers     Enables the use of sample buffers.
+    \value DeprecatedFunctions      Enables the use of deprecated functionality for OpenGL 3.x
+                                    contexts. A context with deprecated functionality enabled is
+                                    called a full context in the OpenGL specification.
+    \value SingleBuffer      Specifies the use of a single buffer, as opposed to double buffers.
+    \value NoDepthBuffer     Disables the use of a depth buffer.
+    \value ColorIndex        Specifies that the context should use a color index as its pixel format.
+    \value NoAlphaChannel    Disables the use of an alpha channel.
+    \value NoAccumBuffer     Disables the use of an accumulation buffer.
+    \value NoStencilBuffer   Disables the use of a stencil buffer.
+    \value NoStereoBuffers   Disables the use of stereo buffers.
+    \value IndirectRendering Specifies that the context is used for indirect rendering to a buffer.
+    \value NoOverlay         Disables the use of an overlay.
+    \value NoSampleBuffers   Disables the use of sample buffers.
+    \value NoDeprecatedFunctions    Disables the use of deprecated functionality for OpenGL 3.x
+                                    contexts. A context with deprecated functionality disabled is
+                                    called a forward compatible context in the OpenGL specification.
+
+    \sa {Sample Buffers Example}
+*/
+
+/*!
+   \fn void QGL::setPreferredPaintEngine(QPaintEngine::Type engineType)
+
+   \since 4.6
+
+   Sets the preferred OpenGL paint engine that is used to draw onto
+   QGLWidget, QGLPixelBuffer and QGLFramebufferObject targets with QPainter
+   in Qt.
+
+   The \a engineType parameter specifies which of the GL engines to
+   use. Only \c QPaintEngine::OpenGL and \c QPaintEngine::OpenGL2 are
+   valid parameters to this function. All other values are ignored.
+
+   By default, the \c QPaintEngine::OpenGL2 engine is used if GL/GLES
+   version 2.0 is available, otherwise \c QPaintEngine::OpenGL is
+   used.
+
+   \warning This function must be called before the QApplication
+   constructor is called.
+*/
+void QGL::setPreferredPaintEngine(QPaintEngine::Type engineType)
+{
+    qgl_engine_selector()->setPreferredPaintEngine(engineType);
+}
+
+
+/*****************************************************************************
+  QGLFormat implementation
+ *****************************************************************************/
+
+
+/*!
+    \class QGLFormat
+    \brief The QGLFormat class specifies the display format of an OpenGL
+    rendering context.
+
+    \ingroup painting-3D
+
+    A display format has several characteristics:
+    \list
+    \i \link setDoubleBuffer() Double or single buffering.\endlink
+    \i \link setDepth() Depth buffer.\endlink
+    \i \link setRgba() RGBA or color index mode.\endlink
+    \i \link setAlpha() Alpha channel.\endlink
+    \i \link setAccum() Accumulation buffer.\endlink
+    \i \link setStencil() Stencil buffer.\endlink
+    \i \link setStereo() Stereo buffers.\endlink
+    \i \link setDirectRendering() Direct rendering.\endlink
+    \i \link setOverlay() Presence of an overlay.\endlink
+    \i \link setPlane() Plane of an overlay.\endlink
+    \i \link setSampleBuffers() Multisample buffers.\endlink
+    \endlist
+
+    You can also specify preferred bit depths for the color buffer,
+    depth buffer, alpha buffer, accumulation buffer and the stencil
+    buffer with the functions: setRedBufferSize(), setGreenBufferSize(),
+    setBlueBufferSize(), setDepthBufferSize(), setAlphaBufferSize(),
+    setAccumBufferSize() and setStencilBufferSize().
+
+    Note that even if you specify that you prefer a 32 bit depth
+    buffer (e.g. with setDepthBufferSize(32)), the format that is
+    chosen may not have a 32 bit depth buffer, even if there is a
+    format available with a 32 bit depth buffer. The main reason for
+    this is how the system dependant picking algorithms work on the
+    different platforms, and some format options may have higher
+    precedence than others.
+
+    You create and tell a QGLFormat object what rendering options you
+    want from an OpenGL rendering context.
+
+    OpenGL drivers or accelerated hardware may or may not support
+    advanced features such as alpha channel or stereographic viewing.
+    If you request some features that the driver/hardware does not
+    provide when you create a QGLWidget, you will get a rendering
+    context with the nearest subset of features.
+
+    There are different ways to define the display characteristics of
+    a rendering context. One is to create a QGLFormat and make it the
+    default for the entire application:
+    \snippet doc/src/snippets/code/src_opengl_qgl.cpp 0
+
+    Or you can specify the desired format when creating an object of
+    your QGLWidget subclass:
+    \snippet doc/src/snippets/code/src_opengl_qgl.cpp 1
+
+    After the widget has been created, you can find out which of the
+    requested features the system was able to provide:
+    \snippet doc/src/snippets/code/src_opengl_qgl.cpp 2
+
+    \legalese
+        OpenGL is a trademark of Silicon Graphics, Inc. in the
+        United States and other countries.
+    \endlegalese
+
+    \sa QGLContext, QGLWidget
+*/
+
+#ifndef QT_OPENGL_ES
+
+static inline void transform_point(GLdouble out[4], const GLdouble m[16], const GLdouble in[4])
+{
+#define M(row,col)  m[col*4+row]
+    out[0] =
+        M(0, 0) * in[0] + M(0, 1) * in[1] + M(0, 2) * in[2] + M(0, 3) * in[3];
+    out[1] =
+        M(1, 0) * in[0] + M(1, 1) * in[1] + M(1, 2) * in[2] + M(1, 3) * in[3];
+    out[2] =
+        M(2, 0) * in[0] + M(2, 1) * in[1] + M(2, 2) * in[2] + M(2, 3) * in[3];
+    out[3] =
+        M(3, 0) * in[0] + M(3, 1) * in[1] + M(3, 2) * in[2] + M(3, 3) * in[3];
+#undef M
+}
+
+static inline GLint qgluProject(GLdouble objx, GLdouble objy, GLdouble objz,
+           const GLdouble model[16], const GLdouble proj[16],
+           const GLint viewport[4],
+           GLdouble * winx, GLdouble * winy, GLdouble * winz)
+{
+   GLdouble in[4], out[4];
+
+   in[0] = objx;
+   in[1] = objy;
+   in[2] = objz;
+   in[3] = 1.0;
+   transform_point(out, model, in);
+   transform_point(in, proj, out);
+
+   if (in[3] == 0.0)
+      return GL_FALSE;
+
+   in[0] /= in[3];
+   in[1] /= in[3];
+   in[2] /= in[3];
+
+   *winx = viewport[0] + (1 + in[0]) * viewport[2] / 2;
+   *winy = viewport[1] + (1 + in[1]) * viewport[3] / 2;
+
+   *winz = (1 + in[2]) / 2;
+   return GL_TRUE;
+}
+
+#endif // !QT_OPENGL_ES
+
+/*!
+    Constructs a QGLFormat object with the following default settings:
+    \list
+    \i \link setDoubleBuffer() Double buffer:\endlink Enabled.
+    \i \link setDepth() Depth buffer:\endlink Enabled.
+    \i \link setRgba() RGBA:\endlink Enabled (i.e., color index disabled).
+    \i \link setAlpha() Alpha channel:\endlink Disabled.
+    \i \link setAccum() Accumulator buffer:\endlink Disabled.
+    \i \link setStencil() Stencil buffer:\endlink Enabled.
+    \i \link setStereo() Stereo:\endlink Disabled.
+    \i \link setDirectRendering() Direct rendering:\endlink Enabled.
+    \i \link setOverlay() Overlay:\endlink Disabled.
+    \i \link setPlane() Plane:\endlink 0 (i.e., normal plane).
+    \i \link setSampleBuffers() Multisample buffers:\endlink Disabled.
+    \endlist
+*/
+
+QGLFormat::QGLFormat()
+{
+    d = new QGLFormatPrivate;
+}
+
+
+/*!
+    Creates a QGLFormat object that is a copy of the current
+    defaultFormat().
+
+    If \a options is not 0, the default format is modified by the
+    specified format options. The \a options parameter should be
+    QGL::FormatOption values OR'ed together.
+
+    This constructor makes it easy to specify a certain desired format
+    in classes derived from QGLWidget, for example:
+    \snippet doc/src/snippets/code/src_opengl_qgl.cpp 3
+
+    Note that there are QGL::FormatOption values to turn format settings
+    both on and off, e.g. QGL::DepthBuffer and QGL::NoDepthBuffer,
+    QGL::DirectRendering and QGL::IndirectRendering, etc.
+
+    The \a plane parameter defaults to 0 and is the plane which this
+    format should be associated with. Not all OpenGL implementations
+    supports overlay/underlay rendering planes.
+
+    \sa defaultFormat(), setOption(), setPlane()
+*/
+
+QGLFormat::QGLFormat(QGL::FormatOptions options, int plane)
+{
+    d = new QGLFormatPrivate;
+    QGL::FormatOptions newOpts = options;
+    d->opts = defaultFormat().d->opts;
+    d->opts |= (newOpts & 0xffff);
+    d->opts &= ~(newOpts >> 16);
+    d->pln = plane;
+}
+
+/*!
+    \internal
+*/
+void QGLFormat::detach()
+{
+    if (d->ref != 1) {
+        QGLFormatPrivate *newd = new QGLFormatPrivate(d);
+        if (!d->ref.deref())
+            delete d;
+        d = newd;
+    }
+}
+
+/*!
+    Constructs a copy of \a other.
+*/
+
+QGLFormat::QGLFormat(const QGLFormat &other)
+{
+    d = other.d;
+    d->ref.ref();
+}
+
+/*!
+    Assigns \a other to this object.
+*/
+
+QGLFormat &QGLFormat::operator=(const QGLFormat &other)
+{
+    if (d != other.d) {
+        other.d->ref.ref();
+        if (!d->ref.deref())
+            delete d;
+        d = other.d;
+    }
+    return *this;
+}
+
+/*!
+    Destroys the QGLFormat.
+*/
+QGLFormat::~QGLFormat()
+{
+    if (!d->ref.deref())
+        delete d;
+}
+
+/*!
+    \fn bool QGLFormat::doubleBuffer() const
+
+    Returns true if double buffering is enabled; otherwise returns
+    false. Double buffering is enabled by default.
+
+    \sa setDoubleBuffer()
+*/
+
+/*!
+    If \a enable is true sets double buffering; otherwise sets single
+    buffering.
+
+    Double buffering is enabled by default.
+
+    Double buffering is a technique where graphics are rendered on an
+    off-screen buffer and not directly to the screen. When the drawing
+    has been completed, the program calls a swapBuffers() function to
+    exchange the screen contents with the buffer. The result is
+    flicker-free drawing and often better performance.
+
+    Note that single buffered contexts are currently not supported
+    with EGL.
+
+    \sa doubleBuffer(), QGLContext::swapBuffers(),
+    QGLWidget::swapBuffers()
+*/
+
+void QGLFormat::setDoubleBuffer(bool enable)
+{
+    setOption(enable ? QGL::DoubleBuffer : QGL::SingleBuffer);
+}
+
+
+/*!
+    \fn bool QGLFormat::depth() const
+
+    Returns true if the depth buffer is enabled; otherwise returns
+    false. The depth buffer is enabled by default.
+
+    \sa setDepth(), setDepthBufferSize()
+*/
+
+/*!
+    If \a enable is true enables the depth buffer; otherwise disables
+    the depth buffer.
+
+    The depth buffer is enabled by default.
+
+    The purpose of a depth buffer (or Z-buffering) is to remove hidden
+    surfaces. Pixels are assigned Z values based on the distance to
+    the viewer. A pixel with a high Z value is closer to the viewer
+    than a pixel with a low Z value. This information is used to
+    decide whether to draw a pixel or not.
+
+    \sa depth(), setDepthBufferSize()
+*/
+
+void QGLFormat::setDepth(bool enable)
+{
+    setOption(enable ? QGL::DepthBuffer : QGL::NoDepthBuffer);
+}
+
+
+/*!
+    \fn bool QGLFormat::rgba() const
+
+    Returns true if RGBA color mode is set. Returns false if color
+    index mode is set. The default color mode is RGBA.
+
+    \sa setRgba()
+*/
+
+/*!
+    If \a enable is true sets RGBA mode. If \a enable is false sets
+    color index mode.
+
+    The default color mode is RGBA.
+
+    RGBA is the preferred mode for most OpenGL applications. In RGBA
+    color mode you specify colors as red + green + blue + alpha
+    quadruplets.
+
+    In color index mode you specify an index into a color lookup
+    table.
+
+    \sa rgba()
+*/
+
+void QGLFormat::setRgba(bool enable)
+{
+    setOption(enable ? QGL::Rgba : QGL::ColorIndex);
+}
+
+
+/*!
+    \fn bool QGLFormat::alpha() const
+
+    Returns true if the alpha buffer in the framebuffer is enabled;
+    otherwise returns false. The alpha buffer is disabled by default.
+
+    \sa setAlpha(), setAlphaBufferSize()
+*/
+
+/*!
+    If \a enable is true enables the alpha buffer; otherwise disables
+    the alpha buffer.
+
+    The alpha buffer is disabled by default.
+
+    The alpha buffer is typically used for implementing transparency
+    or translucency. The A in RGBA specifies the transparency of a
+    pixel.
+
+    \sa alpha(), setAlphaBufferSize()
+*/
+
+void QGLFormat::setAlpha(bool enable)
+{
+    setOption(enable ? QGL::AlphaChannel : QGL::NoAlphaChannel);
+}
+
+
+/*!
+    \fn bool QGLFormat::accum() const
+
+    Returns true if the accumulation buffer is enabled; otherwise
+    returns false. The accumulation buffer is disabled by default.
+
+    \sa setAccum(), setAccumBufferSize()
+*/
+
+/*!
+    If \a enable is true enables the accumulation buffer; otherwise
+    disables the accumulation buffer.
+
+    The accumulation buffer is disabled by default.
+
+    The accumulation buffer is used to create blur effects and
+    multiple exposures.
+
+    \sa accum(), setAccumBufferSize()
+*/
+
+void QGLFormat::setAccum(bool enable)
+{
+    setOption(enable ? QGL::AccumBuffer : QGL::NoAccumBuffer);
+}
+
+
+/*!
+    \fn bool QGLFormat::stencil() const
+
+    Returns true if the stencil buffer is enabled; otherwise returns
+    false. The stencil buffer is enabled by default.
+
+    \sa setStencil(), setStencilBufferSize()
+*/
+
+/*!
+    If \a enable is true enables the stencil buffer; otherwise
+    disables the stencil buffer.
+
+    The stencil buffer is enabled by default.
+
+    The stencil buffer masks certain parts of the drawing area so that
+    masked parts are not drawn on.
+
+    \sa stencil(), setStencilBufferSize()
+*/
+
+void QGLFormat::setStencil(bool enable)
+{
+    setOption(enable ? QGL::StencilBuffer: QGL::NoStencilBuffer);
+}
+
+
+/*!
+    \fn bool QGLFormat::stereo() const
+
+    Returns true if stereo buffering is enabled; otherwise returns
+    false. Stereo buffering is disabled by default.
+
+    \sa setStereo()
+*/
+
+/*!
+    If \a enable is true enables stereo buffering; otherwise disables
+    stereo buffering.
+
+    Stereo buffering is disabled by default.
+
+    Stereo buffering provides extra color buffers to generate left-eye
+    and right-eye images.
+
+    \sa stereo()
+*/
+
+void QGLFormat::setStereo(bool enable)
+{
+    setOption(enable ? QGL::StereoBuffers : QGL::NoStereoBuffers);
+}
+
+
+/*!
+    \fn bool QGLFormat::directRendering() const
+
+    Returns true if direct rendering is enabled; otherwise returns
+    false.
+
+    Direct rendering is enabled by default.
+
+    \sa setDirectRendering()
+*/
+
+/*!
+    If \a enable is true enables direct rendering; otherwise disables
+    direct rendering.
+
+    Direct rendering is enabled by default.
+
+    Enabling this option will make OpenGL bypass the underlying window
+    system and render directly from hardware to the screen, if this is
+    supported by the system.
+
+    \sa directRendering()
+*/
+
+void QGLFormat::setDirectRendering(bool enable)
+{
+    setOption(enable ? QGL::DirectRendering : QGL::IndirectRendering);
+}
+
+/*!
+    \fn bool QGLFormat::sampleBuffers() const
+
+    Returns true if multisample buffer support is enabled; otherwise
+    returns false.
+
+    The multisample buffer is disabled by default.
+
+    \sa setSampleBuffers()
+*/
+
+/*!
+    If \a enable is true, a GL context with multisample buffer support
+    is picked; otherwise ignored.
+
+    \sa sampleBuffers(), setSamples(), samples()
+*/
+void QGLFormat::setSampleBuffers(bool enable)
+{
+    setOption(enable ? QGL::SampleBuffers : QGL::NoSampleBuffers);
+}
+
+/*!
+    Returns the number of samples per pixel when multisampling is
+    enabled. By default, the highest number of samples that is
+    available is used.
+
+    \sa setSampleBuffers(), sampleBuffers(), setSamples()
+*/
+int QGLFormat::samples() const
+{
+   return d->numSamples;
+}
+
+/*!
+    Set the preferred number of samples per pixel when multisampling
+    is enabled to \a numSamples. By default, the highest number of
+    samples available is used.
+
+    \sa setSampleBuffers(), sampleBuffers(), samples()
+*/
+void QGLFormat::setSamples(int numSamples)
+{
+    detach();
+    if (numSamples < 0) {
+        qWarning("QGLFormat::setSamples: Cannot have negative number of samples per pixel %d", numSamples);
+        return;
+    }
+    d->numSamples = numSamples;
+    setSampleBuffers(numSamples > 0);
+}
+
+/*!
+    \since 4.2
+
+    Set the preferred swap interval. This can be used to sync the GL
+    drawing into a system window to the vertical refresh of the screen.
+    Setting an \a interval value of 0 will turn the vertical refresh syncing
+    off, any value higher than 0 will turn the vertical syncing on.
+
+    Under Windows and under X11, where the \c{WGL_EXT_swap_control}
+    and \c{GLX_SGI_video_sync} extensions are used, the \a interval
+    parameter can be used to set the minimum number of video frames
+    that are displayed before a buffer swap will occur. In effect,
+    setting the \a interval to 10, means there will be 10 vertical
+    retraces between every buffer swap.
+
+    Under Windows the \c{WGL_EXT_swap_control} extension has to be present,
+    and under X11 the \c{GLX_SGI_video_sync} extension has to be present.
+*/
+void QGLFormat::setSwapInterval(int interval)
+{
+    detach();
+    d->swapInterval = interval;
+}
+
+/*!
+    \since 4.2
+
+    Returns the currently set swap interval. -1 is returned if setting
+    the swap interval isn't supported in the system GL implementation.
+*/
+int QGLFormat::swapInterval() const
+{
+    return d->swapInterval;
+}
+
+/*!
+    \fn bool QGLFormat::hasOverlay() const
+
+    Returns true if overlay plane is enabled; otherwise returns false.
+
+    Overlay is disabled by default.
+
+    \sa setOverlay()
+*/
+
+/*!
+    If \a enable is true enables an overlay plane; otherwise disables
+    the overlay plane.
+
+    Enabling the overlay plane will cause QGLWidget to create an
+    additional context in an overlay plane. See the QGLWidget
+    documentation for further information.
+
+    \sa hasOverlay()
+*/
+
+void QGLFormat::setOverlay(bool enable)
+{
+    setOption(enable ? QGL::HasOverlay : QGL::NoOverlay);
+}
+
+/*!
+    Returns the plane of this format. The default for normal formats
+    is 0, which means the normal plane. The default for overlay
+    formats is 1, which is the first overlay plane.
+
+    \sa setPlane(), defaultOverlayFormat()
+*/
+int QGLFormat::plane() const
+{
+    return d->pln;
+}
+
+/*!
+    Sets the requested plane to \a plane. 0 is the normal plane, 1 is
+    the first overlay plane, 2 is the second overlay plane, etc.; -1,
+    -2, etc. are underlay planes.
+
+    Note that in contrast to other format specifications, the plane
+    specifications will be matched exactly. This means that if you
+    specify a plane that the underlying OpenGL system cannot provide,
+    an \link QGLWidget::isValid() invalid\endlink QGLWidget will be
+    created.
+
+    \sa plane()
+*/
+void QGLFormat::setPlane(int plane)
+{
+    detach();
+    d->pln = plane;
+}
+
+/*!
+    Sets the format option to \a opt.
+
+    \sa testOption()
+*/
+
+void QGLFormat::setOption(QGL::FormatOptions opt)
+{
+    detach();
+    if (opt & 0xffff)
+        d->opts |= opt;
+    else
+       d->opts &= ~(opt >> 16);
+}
+
+
+
+/*!
+    Returns true if format option \a opt is set; otherwise returns false.
+
+    \sa setOption()
+*/
+
+bool QGLFormat::testOption(QGL::FormatOptions opt) const
+{
+    if (opt & 0xffff)
+       return (d->opts & opt) != 0;
+    else
+       return (d->opts & (opt >> 16)) == 0;
+}
+
+/*!
+    Set the minimum depth buffer size to \a size.
+
+    \sa depthBufferSize(), setDepth(), depth()
+*/
+void QGLFormat::setDepthBufferSize(int size)
+{
+    detach();
+    if (size < 0) {
+        qWarning("QGLFormat::setDepthBufferSize: Cannot set negative depth buffer size %d", size);
+        return;
+    }
+    d->depthSize = size;
+    setDepth(size > 0);
+}
+
+/*!
+    Returns the depth buffer size.
+
+    \sa depth(), setDepth(), setDepthBufferSize()
+*/
+int QGLFormat::depthBufferSize() const
+{
+   return d->depthSize;
+}
+
+/*!
+    \since 4.2
+
+    Set the preferred red buffer size to \a size.
+
+    \sa setGreenBufferSize(), setBlueBufferSize(), setAlphaBufferSize()
+*/
+void QGLFormat::setRedBufferSize(int size)
+{
+    detach();
+    if (size < 0) {
+        qWarning("QGLFormat::setRedBufferSize: Cannot set negative red buffer size %d", size);
+        return;
+    }
+    d->redSize = size;
+}
+
+/*!
+    \since 4.2
+
+    Returns the red buffer size.
+
+    \sa setRedBufferSize()
+*/
+int QGLFormat::redBufferSize() const
+{
+   return d->redSize;
+}
+
+/*!
+    \since 4.2
+
+    Set the preferred green buffer size to \a size.
+
+    \sa setRedBufferSize(), setBlueBufferSize(), setAlphaBufferSize()
+*/
+void QGLFormat::setGreenBufferSize(int size)
+{
+    detach();
+    if (size < 0) {
+        qWarning("QGLFormat::setGreenBufferSize: Cannot set negative green buffer size %d", size);
+        return;
+    }
+    d->greenSize = size;
+}
+
+/*!
+    \since 4.2
+
+    Returns the green buffer size.
+
+    \sa setGreenBufferSize()
+*/
+int QGLFormat::greenBufferSize() const
+{
+   return d->greenSize;
+}
+
+/*!
+    \since 4.2
+
+    Set the preferred blue buffer size to \a size.
+
+    \sa setRedBufferSize(), setGreenBufferSize(), setAlphaBufferSize()
+*/
+void QGLFormat::setBlueBufferSize(int size)
+{
+    detach();
+    if (size < 0) {
+        qWarning("QGLFormat::setBlueBufferSize: Cannot set negative blue buffer size %d", size);
+        return;
+    }
+    d->blueSize = size;
+}
+
+/*!
+    \since 4.2
+
+    Returns the blue buffer size.
+
+    \sa setBlueBufferSize()
+*/
+int QGLFormat::blueBufferSize() const
+{
+   return d->blueSize;
+}
+
+/*!
+    Set the preferred alpha buffer size to \a size.
+    This function implicitly enables the alpha channel.
+
+    \sa setRedBufferSize(), setGreenBufferSize(), alphaBufferSize()
+*/
+void QGLFormat::setAlphaBufferSize(int size)
+{
+    detach();
+    if (size < 0) {
+        qWarning("QGLFormat::setAlphaBufferSize: Cannot set negative alpha buffer size %d", size);
+        return;
+    }
+    d->alphaSize = size;
+    setAlpha(size > 0);
+}
+
+/*!
+    Returns the alpha buffer size.
+
+    \sa alpha(), setAlpha(), setAlphaBufferSize()
+*/
+int QGLFormat::alphaBufferSize() const
+{
+   return d->alphaSize;
+}
+
+/*!
+    Set the preferred accumulation buffer size, where \a size is the
+    bit depth for each RGBA component.
+
+    \sa accum(), setAccum(), accumBufferSize()
+*/
+void QGLFormat::setAccumBufferSize(int size)
+{
+    detach();
+    if (size < 0) {
+        qWarning("QGLFormat::setAccumBufferSize: Cannot set negative accumulate buffer size %d", size);
+        return;
+    }
+    d->accumSize = size;
+    setAccum(size > 0);
+}
+
+/*!
+    Returns the accumulation buffer size.
+
+    \sa setAccumBufferSize(), accum(), setAccum()
+*/
+int QGLFormat::accumBufferSize() const
+{
+   return d->accumSize;
+}
+
+/*!
+    Set the preferred stencil buffer size to \a size.
+
+    \sa stencilBufferSize(), setStencil(), stencil()
+*/
+void QGLFormat::setStencilBufferSize(int size)
+{
+    detach();
+    if (size < 0) {
+        qWarning("QGLFormat::setStencilBufferSize: Cannot set negative stencil buffer size %d", size);
+        return;
+    }
+    d->stencilSize = size;
+    setStencil(size > 0);
+}
+
+/*!
+    Returns the stencil buffer size.
+
+    \sa stencil(), setStencil(), setStencilBufferSize()
+*/
+int QGLFormat::stencilBufferSize() const
+{
+   return d->stencilSize;
+}
+
+/*!
+    \since 4.7
+
+    Set the OpenGL version to the \a major and \a minor numbers. If a
+    context compatible with the requested OpenGL version cannot be
+    created, a context compatible with version 1.x is created instead.
+
+    \sa majorVersion(), minorVersion()
+*/
+void QGLFormat::setVersion(int major, int minor)
+{
+    if (major < 1 || minor < 0) {
+        qWarning("QGLFormat::setVersion: Cannot set zero or negative version number %d.%d", major, minor);
+        return;
+    }
+    detach();
+    d->majorVersion = major;
+    d->minorVersion = minor;
+}
+
+/*!
+    \since 4.7
+
+    Returns the OpenGL major version.
+
+    \sa setVersion(), minorVersion()
+*/
+int QGLFormat::majorVersion() const
+{
+    return d->majorVersion;
+}
+
+/*!
+    \since 4.7
+
+    Returns the OpenGL minor version.
+
+    \sa setVersion(), majorVersion()
+*/
+int QGLFormat::minorVersion() const
+{
+    return d->minorVersion;
+}
+
+/*!
+    \enum QGLFormat::OpenGLContextProfile
+    \since 4.7
+
+    This enum describes the OpenGL context profiles that can be
+    specified for contexts implementing OpenGL version 3.2 or
+    higher. These profiles are different from OpenGL ES profiles.
+
+    \value NoProfile            OpenGL version is lower than 3.2.
+    \value CoreProfile          Functionality deprecated in OpenGL version 3.0 is not available.
+    \value CompatibilityProfile Functionality from earlier OpenGL versions is available.
+*/
+
+/*!
+    \since 4.7
+
+    Set the OpenGL context profile to \a profile. The \a profile is
+    ignored if the requested OpenGL version is less than 3.2.
+
+    \sa profile()
+*/
+void QGLFormat::setProfile(OpenGLContextProfile profile)
+{
+    detach();
+    d->profile = profile;
+}
+
+/*!
+    \since 4.7
+
+    Returns the OpenGL context profile.
+
+    \sa setProfile()
+*/
+QGLFormat::OpenGLContextProfile QGLFormat::profile() const
+{
+    return d->profile;
+}
+
+
+/*!
+    \fn bool QGLFormat::hasOpenGL()
+
+    Returns true if the window system has any OpenGL support;
+    otherwise returns false.
+
+    \warning This function must not be called until the QApplication
+    object has been created.
+*/
+
+
+
+/*!
+    \fn bool QGLFormat::hasOpenGLOverlays()
+
+    Returns true if the window system supports OpenGL overlays;
+    otherwise returns false.
+
+    \warning This function must not be called until the QApplication
+    object has been created.
+*/
+
+QGLFormat::OpenGLVersionFlags Q_AUTOTEST_EXPORT qOpenGLVersionFlagsFromString(const QString &versionString)
+{
+    QGLFormat::OpenGLVersionFlags versionFlags = QGLFormat::OpenGL_Version_None;
+
+    if (versionString.startsWith(QLatin1String("OpenGL ES"))) {
+        QStringList parts = versionString.split(QLatin1Char(' '));
+        if (parts.size() >= 3) {
+            if (parts[2].startsWith(QLatin1String("1."))) {
+                if (parts[1].endsWith(QLatin1String("-CM"))) {
+                    versionFlags |= QGLFormat::OpenGL_ES_Common_Version_1_0 |
+                                    QGLFormat::OpenGL_ES_CommonLite_Version_1_0;
+                    if (parts[2].startsWith(QLatin1String("1.1")))
+                        versionFlags |= QGLFormat::OpenGL_ES_Common_Version_1_1 |
+                                        QGLFormat::OpenGL_ES_CommonLite_Version_1_1;
+                } else {
+                    // Not -CM, must be CL, CommonLite
+                    versionFlags |= QGLFormat::OpenGL_ES_CommonLite_Version_1_0;
+                    if (parts[2].startsWith(QLatin1String("1.1")))
+                        versionFlags |= QGLFormat::OpenGL_ES_CommonLite_Version_1_1;
+                }
+            } else {
+                // OpenGL ES version 2.0 or higher
+                versionFlags |= QGLFormat::OpenGL_ES_Version_2_0;
+            }
+        } else {
+            // if < 3 parts to the name, it is an unrecognised OpenGL ES
+            qWarning("Unrecognised OpenGL ES version");
+        }
+    } else {
+        // not ES, regular OpenGL, the version numbers are first in the string
+        if (versionString.startsWith(QLatin1String("1."))) {
+            switch (versionString[2].toAscii()) {
+            case '5':
+                versionFlags |= QGLFormat::OpenGL_Version_1_5;
+            case '4':
+                versionFlags |= QGLFormat::OpenGL_Version_1_4;
+            case '3':
+                versionFlags |= QGLFormat::OpenGL_Version_1_3;
+            case '2':
+                versionFlags |= QGLFormat::OpenGL_Version_1_2;
+            case '1':
+                versionFlags |= QGLFormat::OpenGL_Version_1_1;
+            default:
+                break;
+            }
+        } else if (versionString.startsWith(QLatin1String("2."))) {
+            versionFlags |= QGLFormat::OpenGL_Version_1_1 |
+                            QGLFormat::OpenGL_Version_1_2 |
+                            QGLFormat::OpenGL_Version_1_3 |
+                            QGLFormat::OpenGL_Version_1_4 |
+                            QGLFormat::OpenGL_Version_1_5 |
+                            QGLFormat::OpenGL_Version_2_0;
+            if (versionString[2].toAscii() == '1')
+                versionFlags |= QGLFormat::OpenGL_Version_2_1;
+        } else if (versionString.startsWith(QLatin1String("3."))) {
+            versionFlags |= QGLFormat::OpenGL_Version_1_1 |
+                            QGLFormat::OpenGL_Version_1_2 |
+                            QGLFormat::OpenGL_Version_1_3 |
+                            QGLFormat::OpenGL_Version_1_4 |
+                            QGLFormat::OpenGL_Version_1_5 |
+                            QGLFormat::OpenGL_Version_2_0 |
+                            QGLFormat::OpenGL_Version_2_1 |
+                            QGLFormat::OpenGL_Version_3_0;
+            switch (versionString[2].toAscii()) {
+            case '3':
+                versionFlags |= QGLFormat::OpenGL_Version_3_3;
+            case '2':
+                versionFlags |= QGLFormat::OpenGL_Version_3_2;
+            case '1':
+                versionFlags |= QGLFormat::OpenGL_Version_3_1;
+            case '0':
+                break;
+            default:
+                versionFlags |= QGLFormat::OpenGL_Version_3_1 |
+                                QGLFormat::OpenGL_Version_3_2 |
+                                QGLFormat::OpenGL_Version_3_3;
+                break;
+            }
+        } else if (versionString.startsWith(QLatin1String("4."))) {
+            versionFlags |= QGLFormat::OpenGL_Version_1_1 |
+                            QGLFormat::OpenGL_Version_1_2 |
+                            QGLFormat::OpenGL_Version_1_3 |
+                            QGLFormat::OpenGL_Version_1_4 |
+                            QGLFormat::OpenGL_Version_1_5 |
+                            QGLFormat::OpenGL_Version_2_0 |
+                            QGLFormat::OpenGL_Version_2_1 |
+                            QGLFormat::OpenGL_Version_3_0 |
+                            QGLFormat::OpenGL_Version_3_1 |
+                            QGLFormat::OpenGL_Version_3_2 |
+                            QGLFormat::OpenGL_Version_3_3 |
+                            QGLFormat::OpenGL_Version_4_0;
+        } else {
+            versionFlags |= QGLFormat::OpenGL_Version_1_1 |
+                            QGLFormat::OpenGL_Version_1_2 |
+                            QGLFormat::OpenGL_Version_1_3 |
+                            QGLFormat::OpenGL_Version_1_4 |
+                            QGLFormat::OpenGL_Version_1_5 |
+                            QGLFormat::OpenGL_Version_2_0 |
+                            QGLFormat::OpenGL_Version_2_1 |
+                            QGLFormat::OpenGL_Version_3_0 |
+                            QGLFormat::OpenGL_Version_3_1 |
+                            QGLFormat::OpenGL_Version_3_2 |
+                            QGLFormat::OpenGL_Version_3_3 |
+                            QGLFormat::OpenGL_Version_4_0;
+        }
+    }
+    return versionFlags;
+}
+
+/*!
+    \enum QGLFormat::OpenGLVersionFlag
+    \since 4.2
+
+    This enum describes the various OpenGL versions that are
+    recognized by Qt. Use the QGLFormat::openGLVersionFlags() function
+    to identify which versions that are supported at runtime.
+
+    \value OpenGL_Version_None  If no OpenGL is present or if no OpenGL context is current.
+
+    \value OpenGL_Version_1_1  OpenGL version 1.1 or higher is present.
+
+    \value OpenGL_Version_1_2  OpenGL version 1.2 or higher is present.
+
+    \value OpenGL_Version_1_3  OpenGL version 1.3 or higher is present.
+
+    \value OpenGL_Version_1_4  OpenGL version 1.4 or higher is present.
+
+    \value OpenGL_Version_1_5  OpenGL version 1.5 or higher is present.
+
+    \value OpenGL_Version_2_0  OpenGL version 2.0 or higher is present.
+    Note that version 2.0 supports all the functionality of version 1.5.
+
+    \value OpenGL_Version_2_1  OpenGL version 2.1 or higher is present.
+
+    \value OpenGL_Version_3_0  OpenGL version 3.0 or higher is present.
+
+    \value OpenGL_Version_3_1  OpenGL version 3.1 or higher is present.
+    Note that OpenGL version 3.1 or higher does not necessarily support all the features of
+    version 3.0 and lower.
+
+    \value OpenGL_Version_3_2  OpenGL version 3.2 or higher is present.
+
+    \value OpenGL_Version_3_3  OpenGL version 3.3 or higher is present.
+
+    \value OpenGL_Version_4_0  OpenGL version 4.0 or higher is present.
+
+    \value OpenGL_ES_CommonLite_Version_1_0  OpenGL ES version 1.0 Common Lite or higher is present.
+
+    \value OpenGL_ES_Common_Version_1_0  OpenGL ES version 1.0 Common or higher is present.
+    The Common profile supports all the features of Common Lite.
+
+    \value OpenGL_ES_CommonLite_Version_1_1  OpenGL ES version 1.1 Common Lite or higher is present.
+
+    \value OpenGL_ES_Common_Version_1_1  OpenGL ES version 1.1 Common or higher is present.
+    The Common profile supports all the features of Common Lite.
+
+    \value OpenGL_ES_Version_2_0  OpenGL ES version 2.0 or higher is present.
+    Note that OpenGL ES version 2.0 does not support all the features of OpenGL ES 1.x.
+    So if OpenGL_ES_Version_2_0 is returned, none of the ES 1.x flags are returned.
+
+    See also \l{http://www.opengl.org} for more information about the different
+    revisions of OpenGL.
+
+    \sa openGLVersionFlags()
+*/
+
+/*!
+    \since 4.2
+
+    Identifies, at runtime, which OpenGL versions that are supported
+    by the current platform.
+
+    Note that if OpenGL version 1.5 is supported, its predecessors
+    (i.e., version 1.4 and lower) are also supported. To identify the
+    support of a particular feature, like multi texturing, test for
+    the version in which the feature was first introduced (i.e.,
+    version 1.3 in the case of multi texturing) to adapt to the largest
+    possible group of runtime platforms.
+
+    This function needs a valid current OpenGL context to work;
+    otherwise it will return OpenGL_Version_None.
+
+    \sa hasOpenGL(), hasOpenGLOverlays()
+*/
+QGLFormat::OpenGLVersionFlags QGLFormat::openGLVersionFlags()
+{
+    static bool cachedDefault = false;
+    static OpenGLVersionFlags defaultVersionFlags = OpenGL_Version_None;
+    QGLContext *currentCtx = const_cast<QGLContext *>(QGLContext::currentContext());
+    QGLTemporaryContext *tmpContext = 0;
+
+    if (currentCtx && currentCtx->d_func()->version_flags_cached)
+        return currentCtx->d_func()->version_flags;
+
+    if (!currentCtx) {
+        if (cachedDefault) {
+            return defaultVersionFlags;
+        } else {
+            if (!hasOpenGL())
+                return defaultVersionFlags;
+            tmpContext = new QGLTemporaryContext;
+            cachedDefault = true;
+        }
+    }
+
+    QString versionString(QLatin1String(reinterpret_cast<const char*>(glGetString(GL_VERSION))));
+    OpenGLVersionFlags versionFlags = qOpenGLVersionFlagsFromString(versionString);
+    if (currentCtx) {
+        currentCtx->d_func()->version_flags_cached = true;
+        currentCtx->d_func()->version_flags = versionFlags;
+    }
+    if (tmpContext) {
+        defaultVersionFlags = versionFlags;
+        delete tmpContext;
+    }
+
+    return versionFlags;
+}
+
+
+/*!
+    Returns the default QGLFormat for the application. All QGLWidget
+    objects that are created use this format unless another format is
+    specified, e.g. when they are constructed.
+
+    If no special default format has been set using
+    setDefaultFormat(), the default format is the same as that created
+    with QGLFormat().
+
+    \sa setDefaultFormat()
+*/
+
+QGLFormat QGLFormat::defaultFormat()
+{
+    return *qgl_default_format();
+}
+
+/*!
+    Sets a new default QGLFormat for the application to \a f. For
+    example, to set single buffering as the default instead of double
+    buffering, your main() might contain code like this:
+    \snippet doc/src/snippets/code/src_opengl_qgl.cpp 4
+
+    \sa defaultFormat()
+*/
+
+void QGLFormat::setDefaultFormat(const QGLFormat &f)
+{
+    *qgl_default_format() = f;
+}
+
+
+/*!
+    Returns the default QGLFormat for overlay contexts.
+
+    The default overlay format is:
+    \list
+    \i \link setDoubleBuffer() Double buffer:\endlink Disabled.
+    \i \link setDepth() Depth buffer:\endlink Disabled.
+    \i \link setRgba() RGBA:\endlink Disabled (i.e., color index enabled).
+    \i \link setAlpha() Alpha channel:\endlink Disabled.
+    \i \link setAccum() Accumulator buffer:\endlink Disabled.
+    \i \link setStencil() Stencil buffer:\endlink Disabled.
+    \i \link setStereo() Stereo:\endlink Disabled.
+    \i \link setDirectRendering() Direct rendering:\endlink Enabled.
+    \i \link setOverlay() Overlay:\endlink Disabled.
+    \i \link setSampleBuffers() Multisample buffers:\endlink Disabled.
+    \i \link setPlane() Plane:\endlink 1 (i.e., first overlay plane).
+    \endlist
+
+    \sa setDefaultFormat()
+*/
+
+QGLFormat QGLFormat::defaultOverlayFormat()
+{
+    return *defaultOverlayFormatInstance();
+}
+
+/*!
+    Sets a new default QGLFormat for overlay contexts to \a f. This
+    format is used whenever a QGLWidget is created with a format that
+    hasOverlay() enabled.
+
+    For example, to get a double buffered overlay context (if
+    available), use code like this:
+
+    \snippet doc/src/snippets/code/src_opengl_qgl.cpp 5
+
+    As usual, you can find out after widget creation whether the
+    underlying OpenGL system was able to provide the requested
+    specification:
+
+    \snippet doc/src/snippets/code/src_opengl_qgl.cpp 6
+
+    \sa defaultOverlayFormat()
+*/
+
+void QGLFormat::setDefaultOverlayFormat(const QGLFormat &f)
+{
+    QGLFormat *defaultFormat = defaultOverlayFormatInstance();
+    *defaultFormat = f;
+    // Make sure the user doesn't request that the overlays themselves
+    // have overlays, since it is unlikely that the system supports
+    // infinitely many planes...
+    defaultFormat->setOverlay(false);
+}
+
+
+/*!
+    Returns true if all the options of the two QGLFormat objects
+    \a a and \a b are equal; otherwise returns false.
+
+    \relates QGLFormat
+*/
+
+bool operator==(const QGLFormat& a, const QGLFormat& b)
+{
+    return (a.d == b.d) || ((int) a.d->opts == (int) b.d->opts
+        && a.d->pln == b.d->pln
+        && a.d->alphaSize == b.d->alphaSize
+        && a.d->accumSize == b.d->accumSize
+        && a.d->stencilSize == b.d->stencilSize
+        && a.d->depthSize == b.d->depthSize
+        && a.d->redSize == b.d->redSize
+        && a.d->greenSize == b.d->greenSize
+        && a.d->blueSize == b.d->blueSize
+        && a.d->numSamples == b.d->numSamples
+        && a.d->swapInterval == b.d->swapInterval
+        && a.d->majorVersion == b.d->majorVersion
+        && a.d->minorVersion == b.d->minorVersion
+        && a.d->profile == b.d->profile);
+}
+
+#ifndef QT_NO_DEBUG_STREAM
+QDebug operator<<(QDebug dbg, const QGLFormat &f)
+{
+    const QGLFormatPrivate * const d = f.d;
+
+    dbg.nospace() << "QGLFormat("
+                  << "options " << d->opts
+                  << ", plane " << d->pln
+                  << ", depthBufferSize " << d->depthSize
+                  << ", accumBufferSize " << d->accumSize
+                  << ", stencilBufferSize " << d->stencilSize
+                  << ", redBufferSize " << d->redSize
+                  << ", greenBufferSize " << d->greenSize
+                  << ", blueBufferSize " << d->blueSize
+                  << ", alphaBufferSize " << d->alphaSize
+                  << ", samples " << d->numSamples
+                  << ", swapInterval " << d->swapInterval
+                  << ", majorVersion " << d->majorVersion
+                  << ", minorVersion " << d->minorVersion
+                  << ", profile " << d->profile
+                  << ')';
+
+    return dbg.space();
+}
+#endif
+
+
+/*!
+    Returns false if all the options of the two QGLFormat objects
+    \a a and \a b are equal; otherwise returns true.
+
+    \relates QGLFormat
+*/
+
+bool operator!=(const QGLFormat& a, const QGLFormat& b)
+{
+    return !(a == b);
+}
+
+struct QGLContextGroupList {
+    void append(QGLContextGroup *group) {
+        QMutexLocker locker(&m_mutex);
+        m_list.append(group);
+    }
+
+    void remove(QGLContextGroup *group) {
+        QMutexLocker locker(&m_mutex);
+        m_list.removeOne(group);
+    }
+
+    QList<QGLContextGroup *> m_list;
+    QMutex m_mutex;
+};
+
+Q_GLOBAL_STATIC(QGLContextGroupList, qt_context_groups)
+
+/*****************************************************************************
+  QGLContext implementation
+ *****************************************************************************/
+
+QGLContextGroup::QGLContextGroup(const QGLContext *context)
+    : m_context(context), m_guards(0), m_refs(1)
+{
+    qt_context_groups()->append(this);
+}
+
+QGLContextGroup::~QGLContextGroup()
+{
+    // Clear any remaining QGLSharedResourceGuard objects on the group.
+    QGLSharedResourceGuard *guard = m_guards;
+    while (guard != 0) {
+        guard->m_group = 0;
+        guard->m_id = 0;
+        guard = guard->m_next;
+    }
+    qt_context_groups()->remove(this);
+}
+
+void QGLContextGroup::addGuard(QGLSharedResourceGuard *guard)
+{
+    if (m_guards)
+        m_guards->m_prev = guard;
+    guard->m_next = m_guards;
+    guard->m_prev = 0;
+    m_guards = guard;
+}
+
+void QGLContextGroup::removeGuard(QGLSharedResourceGuard *guard)
+{
+    if (guard->m_next)
+        guard->m_next->m_prev = guard->m_prev;
+    if (guard->m_prev)
+        guard->m_prev->m_next = guard->m_next;
+    else
+        m_guards = guard->m_next;
+}
+
+const QGLContext *qt_gl_transfer_context(const QGLContext *ctx)
+{
+    if (!ctx)
+        return 0;
+    QList<const QGLContext *> shares
+        (QGLContextPrivate::contextGroup(ctx)->shares());
+    if (shares.size() >= 2)
+        return (ctx == shares.at(0)) ? shares.at(1) : shares.at(0);
+    else
+        return 0;
+}
+
+QGLContextPrivate::QGLContextPrivate(QGLContext *context)
+    : internal_context(false)
+    , q_ptr(context)
+{
+    group = new QGLContextGroup(context);
+    texture_destroyer = new QGLTextureDestroyer;
+    texture_destroyer->moveToThread(qApp->thread());
+}
+
+QGLContextPrivate::~QGLContextPrivate()
+{
+    if (!group->m_refs.deref()) {
+        Q_ASSERT(group->context() == q_ptr);
+        delete group;
+    }
+
+    delete texture_destroyer;
+}
+
+void QGLContextPrivate::init(QPaintDevice *dev, const QGLFormat &format)
+{
+    Q_Q(QGLContext);
+    glFormat = reqFormat = format;
+    valid = false;
+    q->setDevice(dev);
+#if defined(Q_WS_X11)
+    pbuf = 0;
+    gpm = 0;
+    vi = 0;
+    screen = QX11Info::appScreen();
+#endif
+#if defined(Q_WS_WIN)
+    dc = 0;
+    win = 0;
+    threadId = 0;
+    pixelFormatId = 0;
+    cmap = 0;
+    hbitmap = 0;
+    hbitmap_hdc = 0;
+#endif
+#if defined(Q_WS_MAC)
+#  ifndef QT_MAC_USE_COCOA
+    update = false;
+#  endif
+    vi = 0;
+#endif
+#if defined(Q_WS_QPA)
+    platformContext = 0;
+#endif
+#if !defined(QT_NO_EGL)
+    ownsEglContext = false;
+    eglContext = 0;
+    eglSurface = EGL_NO_SURFACE;
+#endif
+    fbo = 0;
+    crWin = false;
+    initDone = false;
+    sharing = false;
+    max_texture_size = -1;
+    version_flags_cached = false;
+    version_flags = QGLFormat::OpenGL_Version_None;
+    extension_flags_cached = false;
+    extension_flags = 0;
+    current_fbo = 0;
+    default_fbo = 0;
+    active_engine = 0;
+    workaround_needsFullClearOnEveryFrame = false;
+    workaround_brokenFBOReadBack = false;
+    workaround_brokenTexSubImage = false;
+    workaroundsCached = false;
+
+    workaround_brokenTextureFromPixmap = false;
+    workaround_brokenTextureFromPixmap_init = false;
+
+    workaround_brokenAlphaTexSubImage = false;
+    workaround_brokenAlphaTexSubImage_init = false;
+
+    for (int i = 0; i < QT_GL_VERTEX_ARRAY_TRACKED_COUNT; ++i)
+        vertexAttributeArraysEnabledState[i] = false;
+}
+
+QGLContext* QGLContext::currentCtx = 0;
+
+/*
+   Read back the contents of the currently bound framebuffer, used in
+   QGLWidget::grabFrameBuffer(), QGLPixelbuffer::toImage() and
+   QGLFramebufferObject::toImage()
+*/
+
+static void convertFromGLImage(QImage &img, int w, int h, bool alpha_format, bool include_alpha)
+{
+    if (QSysInfo::ByteOrder == QSysInfo::BigEndian) {
+        // OpenGL gives RGBA; Qt wants ARGB
+        uint *p = (uint*)img.bits();
+        uint *end = p + w*h;
+        if (alpha_format && include_alpha) {
+            while (p < end) {
+                uint a = *p << 24;
+                *p = (*p >> 8) | a;
+                p++;
+            }
+        } else {
+            // This is an old legacy fix for PowerPC based Macs, which
+            // we shouldn't remove
+            while (p < end) {
+                *p = 0xff000000 | (*p>>8);
+                ++p;
+            }
+        }
+    } else {
+        // OpenGL gives ABGR (i.e. RGBA backwards); Qt wants ARGB
+        for (int y = 0; y < h; y++) {
+            uint *q = (uint*)img.scanLine(y);
+            for (int x=0; x < w; ++x) {
+                const uint pixel = *q;
+                if (alpha_format && include_alpha) {
+                    *q = ((pixel << 16) & 0xff0000) | ((pixel >> 16) & 0xff)
+                         | (pixel & 0xff00ff00);
+                } else {
+                    *q = 0xff000000 | ((pixel << 16) & 0xff0000)
+                         | ((pixel >> 16) & 0xff) | (pixel & 0x00ff00);
+                }
+
+                q++;
+            }
+        }
+
+    }
+    img = img.mirrored();
+}
+
+QImage qt_gl_read_framebuffer(const QSize &size, bool alpha_format, bool include_alpha)
+{
+    QImage img(size, (alpha_format && include_alpha) ? QImage::Format_ARGB32_Premultiplied
+                                                     : QImage::Format_RGB32);
+    int w = size.width();
+    int h = size.height();
+    glReadPixels(0, 0, w, h, GL_RGBA, GL_UNSIGNED_BYTE, img.bits());
+    convertFromGLImage(img, w, h, alpha_format, include_alpha);
+    return img;
+}
+
+QImage qt_gl_read_texture(const QSize &size, bool alpha_format, bool include_alpha)
+{
+    QImage img(size, alpha_format ? QImage::Format_ARGB32_Premultiplied : QImage::Format_RGB32);
+    int w = size.width();
+    int h = size.height();
+#if !defined(QT_OPENGL_ES_2) && !defined(QT_OPENGL_ES_1)
+    //### glGetTexImage not in GL ES 2.0, need to do something else here!
+    glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_UNSIGNED_BYTE, img.bits());
+#endif
+    convertFromGLImage(img, w, h, alpha_format, include_alpha);
+    return img;
+}
+
+// returns the highest number closest to v, which is a power of 2
+// NB! assumes 32 bit ints
+int qt_next_power_of_two(int v)
+{
+    v--;
+    v |= v >> 1;
+    v |= v >> 2;
+    v |= v >> 4;
+    v |= v >> 8;
+    v |= v >> 16;
+    ++v;
+    return v;
+}
+
+typedef void (*_qt_pixmap_cleanup_hook_64)(qint64);
+typedef void (*_qt_image_cleanup_hook_64)(qint64);
+
+extern Q_GUI_EXPORT _qt_pixmap_cleanup_hook_64 qt_pixmap_cleanup_hook_64;
+extern Q_GUI_EXPORT _qt_image_cleanup_hook_64 qt_image_cleanup_hook_64;
+
+
+Q_GLOBAL_STATIC(QGLTextureCache, qt_gl_texture_cache)
+
+QGLTextureCache::QGLTextureCache()
+    : m_cache(64*1024) // cache ~64 MB worth of textures - this is not accurate though
+{
+    QImagePixmapCleanupHooks::instance()->addPixmapDataModificationHook(cleanupTexturesForPixampData);
+    QImagePixmapCleanupHooks::instance()->addPixmapDataDestructionHook(cleanupBeforePixmapDestruction);
+    QImagePixmapCleanupHooks::instance()->addImageHook(cleanupTexturesForCacheKey);
+}
+
+QGLTextureCache::~QGLTextureCache()
+{
+    QImagePixmapCleanupHooks::instance()->removePixmapDataModificationHook(cleanupTexturesForPixampData);
+    QImagePixmapCleanupHooks::instance()->removePixmapDataDestructionHook(cleanupBeforePixmapDestruction);
+    QImagePixmapCleanupHooks::instance()->removeImageHook(cleanupTexturesForCacheKey);
+}
+
+void QGLTextureCache::insert(QGLContext* ctx, qint64 key, QGLTexture* texture, int cost)
+{
+    QWriteLocker locker(&m_lock);
+    const QGLTextureCacheKey cacheKey = {key, QGLContextPrivate::contextGroup(ctx)};
+    m_cache.insert(cacheKey, texture, cost);
+}
+
+void QGLTextureCache::remove(qint64 key)
+{
+    QWriteLocker locker(&m_lock);
+    QMutexLocker groupLocker(&qt_context_groups()->m_mutex);
+    QList<QGLContextGroup *>::const_iterator it = qt_context_groups()->m_list.constBegin();
+    while (it != qt_context_groups()->m_list.constEnd()) {
+        const QGLTextureCacheKey cacheKey = {key, *it};
+        m_cache.remove(cacheKey);
+        ++it;
+    }
+}
+
+bool QGLTextureCache::remove(QGLContext* ctx, GLuint textureId)
+{
+    QWriteLocker locker(&m_lock);
+    QList<QGLTextureCacheKey> keys = m_cache.keys();
+    for (int i = 0; i < keys.size(); ++i) {
+        QGLTexture *tex = m_cache.object(keys.at(i));
+        if (tex->id == textureId && tex->context == ctx) {
+            tex->options |= QGLContext::MemoryManagedBindOption; // forces a glDeleteTextures() call
+            m_cache.remove(keys.at(i));
+            return true;
+        }
+    }
+    return false;
+}
+
+void QGLTextureCache::removeContextTextures(QGLContext* ctx)
+{
+    QWriteLocker locker(&m_lock);
+    QList<QGLTextureCacheKey> keys = m_cache.keys();
+    for (int i = 0; i < keys.size(); ++i) {
+        const QGLTextureCacheKey &key = keys.at(i);
+        if (m_cache.object(key)->context == ctx)
+            m_cache.remove(key);
+    }
+}
+
+/*
+  a hook that removes textures from the cache when a pixmap/image
+  is deref'ed
+*/
+void QGLTextureCache::cleanupTexturesForCacheKey(qint64 cacheKey)
+{
+    qt_gl_texture_cache()->remove(cacheKey);
+}
+
+
+void QGLTextureCache::cleanupTexturesForPixampData(QPixmapData* pmd)
+{
+    cleanupTexturesForCacheKey(pmd->cacheKey());
+}
+
+void QGLTextureCache::cleanupBeforePixmapDestruction(QPixmapData* pmd)
+{
+    // Remove any bound textures first:
+    cleanupTexturesForPixampData(pmd);
+
+#if defined(Q_WS_X11)
+    if (pmd->classId() == QPixmapData::X11Class) {
+        Q_ASSERT(pmd->ref == 0); // Make sure reference counting isn't broken
+        QGLContextPrivate::destroyGlSurfaceForPixmap(pmd);
+    }
+#endif
+}
+
+QGLTextureCache *QGLTextureCache::instance()
+{
+    return qt_gl_texture_cache();
+}
+
+// DDS format structure
+struct DDSFormat {
+    quint32 dwSize;
+    quint32 dwFlags;
+    quint32 dwHeight;
+    quint32 dwWidth;
+    quint32 dwLinearSize;
+    quint32 dummy1;
+    quint32 dwMipMapCount;
+    quint32 dummy2[11];
+    struct {
+        quint32 dummy3[2];
+        quint32 dwFourCC;
+        quint32 dummy4[5];
+    } ddsPixelFormat;
+};
+
+// compressed texture pixel formats
+#define FOURCC_DXT1  0x31545844
+#define FOURCC_DXT2  0x32545844
+#define FOURCC_DXT3  0x33545844
+#define FOURCC_DXT4  0x34545844
+#define FOURCC_DXT5  0x35545844
+
+#ifndef GL_COMPRESSED_RGB_S3TC_DXT1_EXT
+#define GL_COMPRESSED_RGB_S3TC_DXT1_EXT   0x83F0
+#define GL_COMPRESSED_RGBA_S3TC_DXT1_EXT  0x83F1
+#define GL_COMPRESSED_RGBA_S3TC_DXT3_EXT  0x83F2
+#define GL_COMPRESSED_RGBA_S3TC_DXT5_EXT  0x83F3
+#endif
+
+#ifndef GL_GENERATE_MIPMAP_SGIS
+#define GL_GENERATE_MIPMAP_SGIS       0x8191
+#define GL_GENERATE_MIPMAP_HINT_SGIS  0x8192
+#endif
+
+/*!
+    \class QGLContext
+    \brief The QGLContext class encapsulates an OpenGL rendering context.
+
+    \ingroup painting-3D
+
+    An OpenGL rendering context is a complete set of OpenGL state
+    variables. The rendering context's \l {QGL::FormatOption} {format}
+    is set in the constructor, but it can also be set later with
+    setFormat(). The format options that are actually set are returned
+    by format(); the options you asked for are returned by
+    requestedFormat(). Note that after a QGLContext object has been
+    constructed, the actual OpenGL context must be created by
+    explicitly calling the \link create() create()\endlink
+    function. The makeCurrent() function makes this context the
+    current rendering context. You can make \e no context current
+    using doneCurrent(). The reset() function will reset the context
+    and make it invalid.
+
+    You can examine properties of the context with, e.g. isValid(),
+    isSharing(), initialized(), windowCreated() and
+    overlayTransparentColor().
+
+    If you're using double buffering you can swap the screen contents
+    with the off-screen buffer using swapBuffers().
+
+    Please note that QGLContext is not thread safe.
+*/
+
+/*!
+    \enum QGLContext::BindOption
+    \since 4.6
+
+    A set of options to decide how to bind a texture using bindTexture().
+
+    \value NoBindOption Don't do anything, pass the texture straight
+    through.
+
+    \value InvertedYBindOption Specifies that the texture should be flipped
+    over the X axis so that the texture coordinate 0,0 corresponds to
+    the top left corner. Inverting the texture implies a deep copy
+    prior to upload.
+
+    \value MipmapBindOption Specifies that bindTexture() should try
+    to generate mipmaps.  If the GL implementation supports the \c
+    GL_SGIS_generate_mipmap extension, mipmaps will be automatically
+    generated for the texture. Mipmap generation is only supported for
+    the \c GL_TEXTURE_2D target.
+
+    \value PremultipliedAlphaBindOption Specifies that the image should be
+    uploaded with premultiplied alpha and does a conversion accordingly.
+
+    \value LinearFilteringBindOption Specifies that the texture filtering
+    should be set to GL_LINEAR. Default is GL_NEAREST. If mipmap is
+    also enabled, filtering will be set to GL_LINEAR_MIPMAP_LINEAR.
+
+    \value DefaultBindOption In Qt 4.5 and earlier, bindTexture()
+    would mirror the image and automatically generate mipmaps. This
+    option helps preserve this default behavior.
+
+    \omitvalue CanFlipNativePixmapBindOption Used by x11 from pixmap to choose
+    whether or not it can bind the pixmap upside down or not.
+
+    \omitvalue MemoryManagedBindOption Used by paint engines to
+    indicate that the pixmap should be memory managed along side with
+    the pixmap/image that it stems from, e.g. installing destruction
+    hooks in them.
+
+    \omitvalue TemporarilyCachedBindOption Used by paint engines on some
+    platforms to indicate that the pixmap or image texture is possibly
+    cached only temporarily and must be destroyed immediately after the use.
+
+    \omitvalue InternalBindOption
+*/
+
+/*!
+    \obsolete
+
+    Constructs an OpenGL context for the given paint \a device, which
+    can be a widget or a pixmap. The \a format specifies several
+    display options for the context.
+
+    If the underlying OpenGL/Window system cannot satisfy all the
+    features requested in \a format, the nearest subset of features
+    will be used. After creation, the format() method will return the
+    actual format obtained.
+
+    Note that after a QGLContext object has been constructed, \l
+    create() must be called explicitly to create the actual OpenGL
+    context. The context will be \l {isValid()}{invalid} if it was not
+    possible to obtain a GL context at all.
+*/
+
+QGLContext::QGLContext(const QGLFormat &format, QPaintDevice *device)
+    : d_ptr(new QGLContextPrivate(this))
+{
+    Q_D(QGLContext);
+    d->init(device, format);
+}
+
+/*!
+    Constructs an OpenGL context with the given \a format which
+    specifies several display options for the context.
+
+    If the underlying OpenGL/Window system cannot satisfy all the
+    features requested in \a format, the nearest subset of features
+    will be used. After creation, the format() method will return the
+    actual format obtained.
+
+    Note that after a QGLContext object has been constructed, \l
+    create() must be called explicitly to create the actual OpenGL
+    context. The context will be \l {isValid()}{invalid} if it was not
+    possible to obtain a GL context at all.
+
+    \sa format(), isValid()
+*/
+QGLContext::QGLContext(const QGLFormat &format)
+    : d_ptr(new QGLContextPrivate(this))
+{
+    Q_D(QGLContext);
+    d->init(0, format);
+}
+
+/*!
+    Destroys the OpenGL context and frees its resources.
+*/
+
+QGLContext::~QGLContext()
+{
+    // remove any textures cached in this context
+    QGLTextureCache::instance()->removeContextTextures(this);
+
+    // clean up resources specific to this context
+    d_ptr->cleanup();
+    // clean up resources belonging to this context's group
+    d_ptr->group->cleanupResources(this);
+
+    QGLSignalProxy::instance()->emitAboutToDestroyContext(this);
+    reset();
+}
+
+void QGLContextPrivate::cleanup()
+{
+    QHash<QGLContextResourceBase *, void *>::ConstIterator it;
+    for (it = m_resources.begin(); it != m_resources.end(); ++it)
+        it.key()->freeResource(it.value());
+    m_resources.clear();
+}
+
+#define ctx q_ptr
+void QGLContextPrivate::setVertexAttribArrayEnabled(int arrayIndex, bool enabled)
+{
+    Q_ASSERT(arrayIndex < QT_GL_VERTEX_ARRAY_TRACKED_COUNT);
+#ifdef glEnableVertexAttribArray
+    Q_ASSERT(glEnableVertexAttribArray);
+#endif
+
+    if (vertexAttributeArraysEnabledState[arrayIndex] && !enabled)
+        glDisableVertexAttribArray(arrayIndex);
+
+    if (!vertexAttributeArraysEnabledState[arrayIndex] && enabled)
+        glEnableVertexAttribArray(arrayIndex);
+
+    vertexAttributeArraysEnabledState[arrayIndex] = enabled;
+}
+
+void QGLContextPrivate::syncGlState()
+{
+#ifdef glEnableVertexAttribArray
+    Q_ASSERT(glEnableVertexAttribArray);
+#endif
+    for (int i = 0; i < QT_GL_VERTEX_ARRAY_TRACKED_COUNT; ++i) {
+        if (vertexAttributeArraysEnabledState[i])
+            glEnableVertexAttribArray(i);
+        else
+            glDisableVertexAttribArray(i);
+    }
+
+}
+#undef ctx
+
+#ifdef QT_NO_EGL
+void QGLContextPrivate::swapRegion(const QRegion &)
+{
+    Q_Q(QGLContext);
+    q->swapBuffers();
+}
+#endif
+
+/*!
+    \overload
+
+    Reads the compressed texture file \a fileName and generates a 2D GL
+    texture from it.
+
+    This function can load DirectDrawSurface (DDS) textures in the
+    DXT1, DXT3 and DXT5 DDS formats if the \c GL_ARB_texture_compression
+    and \c GL_EXT_texture_compression_s3tc extensions are supported.
+
+    Since 4.6.1, textures in the ETC1 format can be loaded if the
+    \c GL_OES_compressed_ETC1_RGB8_texture extension is supported
+    and the ETC1 texture has been encapsulated in the PVR container format.
+    Also, textures in the PVRTC2 and PVRTC4 formats can be loaded
+    if the \c GL_IMG_texture_compression_pvrtc extension is supported.
+
+    \sa deleteTexture()
+*/
+
+GLuint QGLContext::bindTexture(const QString &fileName)
+{
+    QGLTexture texture(this);
+    QSize size = texture.bindCompressedTexture(fileName);
+    if (!size.isValid())
+        return 0;
+    return texture.id;
+}
+
+static inline QRgb qt_gl_convertToGLFormatHelper(QRgb src_pixel, GLenum texture_format)
+{
+    if (texture_format == GL_BGRA) {
+        if (QSysInfo::ByteOrder == QSysInfo::BigEndian) {
+            return ((src_pixel << 24) & 0xff000000)
+                   | ((src_pixel >> 24) & 0x000000ff)
+                   | ((src_pixel << 8) & 0x00ff0000)
+                   | ((src_pixel >> 8) & 0x0000ff00);
+        } else {
+            return src_pixel;
+        }
+    } else {  // GL_RGBA
+        if (QSysInfo::ByteOrder == QSysInfo::BigEndian) {
+            return (src_pixel << 8) | ((src_pixel >> 24) & 0xff);
+        } else {
+            return ((src_pixel << 16) & 0xff0000)
+                   | ((src_pixel >> 16) & 0xff)
+                   | (src_pixel & 0xff00ff00);
+        }
+    }
+}
+
+QRgb qt_gl_convertToGLFormat(QRgb src_pixel, GLenum texture_format)
+{
+    return qt_gl_convertToGLFormatHelper(src_pixel, texture_format);
+}
+
+static void convertToGLFormatHelper(QImage &dst, const QImage &img, GLenum texture_format)
+{
+    Q_ASSERT(dst.depth() == 32);
+    Q_ASSERT(img.depth() == 32);
+
+    if (dst.size() != img.size()) {
+        int target_width = dst.width();
+        int target_height = dst.height();
+        qreal sx = target_width / qreal(img.width());
+        qreal sy = target_height / qreal(img.height());
+
+        quint32 *dest = (quint32 *) dst.scanLine(0); // NB! avoid detach here
+        uchar *srcPixels = (uchar *) img.scanLine(img.height() - 1);
+        int sbpl = img.bytesPerLine();
+        int dbpl = dst.bytesPerLine();
+
+        int ix = int(0x00010000 / sx);
+        int iy = int(0x00010000 / sy);
+
+        quint32 basex = int(0.5 * ix);
+        quint32 srcy = int(0.5 * iy);
+
+        // scale, swizzle and mirror in one loop
+        while (target_height--) {
+            const uint *src = (const quint32 *) (srcPixels - (srcy >> 16) * sbpl);
+            int srcx = basex;
+            for (int x=0; x<target_width; ++x) {
+                dest[x] = qt_gl_convertToGLFormatHelper(src[srcx >> 16], texture_format);
+                srcx += ix;
+            }
+            dest = (quint32 *)(((uchar *) dest) + dbpl);
+            srcy += iy;
+        }
+    } else {
+        const int width = img.width();
+        const int height = img.height();
+        const uint *p = (const uint*) img.scanLine(img.height() - 1);
+        uint *q = (uint*) dst.scanLine(0);
+
+        if (texture_format == GL_BGRA) {
+            if (QSysInfo::ByteOrder == QSysInfo::BigEndian) {
+                // mirror + swizzle
+                for (int i=0; i < height; ++i) {
+                    const uint *end = p + width;
+                    while (p < end) {
+                        *q = ((*p << 24) & 0xff000000)
+                             | ((*p >> 24) & 0x000000ff)
+                             | ((*p << 8) & 0x00ff0000)
+                             | ((*p >> 8) & 0x0000ff00);
+                        p++;
+                        q++;
+                    }
+                    p -= 2 * width;
+                }
+            } else {
+                const uint bytesPerLine = img.bytesPerLine();
+                for (int i=0; i < height; ++i) {
+                    memcpy(q, p, bytesPerLine);
+                    q += width;
+                    p -= width;
+                }
+            }
+        } else {
+            if (QSysInfo::ByteOrder == QSysInfo::BigEndian) {
+                for (int i=0; i < height; ++i) {
+                    const uint *end = p + width;
+                    while (p < end) {
+                        *q = (*p << 8) | ((*p >> 24) & 0xff);
+                        p++;
+                        q++;
+                    }
+                    p -= 2 * width;
+                }
+            } else {
+                for (int i=0; i < height; ++i) {
+                    const uint *end = p + width;
+                    while (p < end) {
+                        *q = ((*p << 16) & 0xff0000) | ((*p >> 16) & 0xff) | (*p & 0xff00ff00);
+                        p++;
+                        q++;
+                    }
+                    p -= 2 * width;
+                }
+            }
+        }
+    }
+}
+
+#if defined(Q_WS_X11) || defined(Q_WS_MAC) || defined(Q_WS_QWS) || defined(Q_WS_QPA) || defined(Q_OS_SYMBIAN)
+QGLExtensionFuncs& QGLContextPrivate::extensionFuncs(const QGLContext *)
+{
+    return qt_extensionFuncs;
+}
+#endif
+
+QImage QGLContextPrivate::convertToGLFormat(const QImage &image, bool force_premul,
+                                            GLenum texture_format)
+{
+    QImage::Format target_format = image.format();
+    if (force_premul || image.format() != QImage::Format_ARGB32)
+        target_format = QImage::Format_ARGB32_Premultiplied;
+
+    QImage result(image.width(), image.height(), target_format);
+    convertToGLFormatHelper(result, image.convertToFormat(target_format), texture_format);
+    return result;
+}
+
+/*! \internal */
+QGLTexture *QGLContextPrivate::bindTexture(const QImage &image, GLenum target, GLint format,
+                                           QGLContext::BindOptions options)
+{
+    Q_Q(QGLContext);
+
+    const qint64 key = image.cacheKey();
+    QGLTexture *texture = textureCacheLookup(key, target);
+    if (texture) {
+        if (image.paintingActive()) {
+            // A QPainter is active on the image - take the safe route and replace the texture.
+            q->deleteTexture(texture->id);
+            texture = 0;
+        } else {
+            glBindTexture(target, texture->id);
+            return texture;
+        }
+    }
+
+    if (!texture)
+        texture = bindTexture(image, target, format, key, options);
+    // NOTE: bindTexture(const QImage&, GLenum, GLint, const qint64, bool) should never return null
+    Q_ASSERT(texture);
+
+    // Enable the cleanup hooks for this image so that the texture cache entry is removed when the
+    // image gets deleted:
+    QImagePixmapCleanupHooks::enableCleanupHooks(image);
+
+    return texture;
+}
+
+// #define QGL_BIND_TEXTURE_DEBUG
+
+// map from Qt's ARGB endianness-dependent format to GL's big-endian RGBA layout
+static inline void qgl_byteSwapImage(QImage &img, GLenum pixel_type)
+{
+    const int width = img.width();
+    const int height = img.height();
+
+    if (pixel_type == GL_UNSIGNED_INT_8_8_8_8_REV
+        || (pixel_type == GL_UNSIGNED_BYTE && QSysInfo::ByteOrder == QSysInfo::LittleEndian))
+    {
+        for (int i = 0; i < height; ++i) {
+            uint *p = (uint *) img.scanLine(i);
+            for (int x = 0; x < width; ++x)
+                p[x] = ((p[x] << 16) & 0xff0000) | ((p[x] >> 16) & 0xff) | (p[x] & 0xff00ff00);
+        }
+    } else {
+        for (int i = 0; i < height; ++i) {
+            uint *p = (uint *) img.scanLine(i);
+            for (int x = 0; x < width; ++x)
+                p[x] = (p[x] << 8) | ((p[x] >> 24) & 0xff);
+        }
+    }
+}
+
+QGLTexture* QGLContextPrivate::bindTexture(const QImage &image, GLenum target, GLint internalFormat,
+                                           const qint64 key, QGLContext::BindOptions options)
+{
+    Q_Q(QGLContext);
+
+#ifdef QGL_BIND_TEXTURE_DEBUG
+    printf("QGLContextPrivate::bindTexture(), imageSize=(%d,%d), internalFormat =0x%x, options=%x, key=%llx\n",
+           image.width(), image.height(), internalFormat, int(options), key);
+    QTime time;
+    time.start();
+#endif
+
+#ifndef QT_NO_DEBUG
+    // Reset the gl error stack...git
+    while (glGetError() != GL_NO_ERROR) ;
+#endif
+
+    // Scale the pixmap if needed. GL textures needs to have the
+    // dimensions 2^n+2(border) x 2^m+2(border), unless we're using GL
+    // 2.0 or use the GL_TEXTURE_RECTANGLE texture target
+    int tx_w = qt_next_power_of_two(image.width());
+    int tx_h = qt_next_power_of_two(image.height());
+
+    QImage img = image;
+
+    if (!(QGLExtensions::glExtensions() & QGLExtensions::NPOTTextures)
+        && !(QGLFormat::openGLVersionFlags() & QGLFormat::OpenGL_ES_Version_2_0)
+        && (target == GL_TEXTURE_2D && (tx_w != image.width() || tx_h != image.height())))
+    {
+        img = img.scaled(tx_w, tx_h);
+#ifdef QGL_BIND_TEXTURE_DEBUG
+        printf(" - upscaled to %dx%d (%d ms)\n", tx_w, tx_h, time.elapsed());
+
+#endif
+    }
+
+    GLuint filtering = options & QGLContext::LinearFilteringBindOption ? GL_LINEAR : GL_NEAREST;
+
+    GLuint tx_id;
+    glGenTextures(1, &tx_id);
+    glBindTexture(target, tx_id);
+    glTexParameterf(target, GL_TEXTURE_MAG_FILTER, filtering);
+
+#if defined(QT_OPENGL_ES_2)
+    bool genMipmap = false;
+#endif
+    if (glFormat.directRendering()
+        && (QGLExtensions::glExtensions() & QGLExtensions::GenerateMipmap)
+        && target == GL_TEXTURE_2D
+        && (options & QGLContext::MipmapBindOption))
+    {
+#if !defined(QT_OPENGL_ES_2)
+        glHint(GL_GENERATE_MIPMAP_HINT_SGIS, GL_NICEST);
+#ifndef QT_OPENGL_ES
+        glTexParameteri(target, GL_GENERATE_MIPMAP_SGIS, GL_TRUE);
+#else
+        glTexParameterf(target, GL_GENERATE_MIPMAP_SGIS, GL_TRUE);
+#endif
+#else
+        glHint(GL_GENERATE_MIPMAP_HINT, GL_NICEST);
+        genMipmap = true;
+#endif
+        glTexParameterf(target, GL_TEXTURE_MIN_FILTER, options & QGLContext::LinearFilteringBindOption
+                        ? GL_LINEAR_MIPMAP_LINEAR : GL_NEAREST_MIPMAP_NEAREST);
+#ifdef QGL_BIND_TEXTURE_DEBUG
+        printf(" - generating mipmaps (%d ms)\n", time.elapsed());
+#endif
+    } else {
+        glTexParameterf(target, GL_TEXTURE_MIN_FILTER, filtering);
+    }
+
+    QImage::Format target_format = img.format();
+    bool premul = options & QGLContext::PremultipliedAlphaBindOption;
+    GLenum externalFormat;
+    GLuint pixel_type;
+    if (QGLExtensions::glExtensions() & QGLExtensions::BGRATextureFormat) {
+        externalFormat = GL_BGRA;
+        if (QGLFormat::openGLVersionFlags() & QGLFormat::OpenGL_Version_1_2)
+            pixel_type = GL_UNSIGNED_INT_8_8_8_8_REV;
+        else
+            pixel_type = GL_UNSIGNED_BYTE;
+    } else {
+        externalFormat = GL_RGBA;
+        pixel_type = GL_UNSIGNED_BYTE;
+    }
+
+    switch (target_format) {
+    case QImage::Format_ARGB32:
+        if (premul) {
+            img = img.convertToFormat(target_format = QImage::Format_ARGB32_Premultiplied);
+#ifdef QGL_BIND_TEXTURE_DEBUG
+            printf(" - converted ARGB32 -> ARGB32_Premultiplied (%d ms) \n", time.elapsed());
+#endif
+        }
+        break;
+    case QImage::Format_ARGB32_Premultiplied:
+        if (!premul) {
+            img = img.convertToFormat(target_format = QImage::Format_ARGB32);
+#ifdef QGL_BIND_TEXTURE_DEBUG
+            printf(" - converted ARGB32_Premultiplied -> ARGB32 (%d ms)\n", time.elapsed());
+#endif
+        }
+        break;
+    case QImage::Format_RGB16:
+        pixel_type = GL_UNSIGNED_SHORT_5_6_5;
+        externalFormat = GL_RGB;
+        internalFormat = GL_RGB;
+        break;
+    case QImage::Format_RGB32:
+        break;
+    default:
+        if (img.hasAlphaChannel()) {
+            img = img.convertToFormat(premul
+                                      ? QImage::Format_ARGB32_Premultiplied
+                                      : QImage::Format_ARGB32);
+#ifdef QGL_BIND_TEXTURE_DEBUG
+            printf(" - converted to 32-bit alpha format (%d ms)\n", time.elapsed());
+#endif
+        } else {
+            img = img.convertToFormat(QImage::Format_RGB32);
+#ifdef QGL_BIND_TEXTURE_DEBUG
+            printf(" - converted to 32-bit (%d ms)\n", time.elapsed());
+#endif
+        }
+    }
+
+    if (options & QGLContext::InvertedYBindOption) {
+        if (img.isDetached()) {
+            int ipl = img.bytesPerLine() / 4;
+            int h = img.height();
+            for (int y=0; y<h/2; ++y) {
+                int *a = (int *) img.scanLine(y);
+                int *b = (int *) img.scanLine(h - y - 1);
+                for (int x=0; x<ipl; ++x)
+                    qSwap(a[x], b[x]);
+            }
+        } else {
+            // Create a new image and copy across.  If we use the
+            // above in-place code then a full copy of the image is
+            // made before the lines are swapped, which processes the
+            // data twice.  This version should only do it once.
+            img = img.mirrored();
+        }
+#ifdef QGL_BIND_TEXTURE_DEBUG
+            printf(" - flipped bits over y (%d ms)\n", time.elapsed());
+#endif
+    }
+
+    if (externalFormat == GL_RGBA) {
+        // The only case where we end up with a depth different from
+        // 32 in the switch above is for the RGB16 case, where we set
+        // the format to GL_RGB
+        Q_ASSERT(img.depth() == 32);
+        qgl_byteSwapImage(img, pixel_type);
+#ifdef QGL_BIND_TEXTURE_DEBUG
+            printf(" - did byte swapping (%d ms)\n", time.elapsed());
+#endif
+    }
+#ifdef QT_OPENGL_ES
+    // OpenGL/ES requires that the internal and external formats be
+    // identical.
+    internalFormat = externalFormat;
+#endif
+#ifdef QGL_BIND_TEXTURE_DEBUG
+    printf(" - uploading, image.format=%d, externalFormat=0x%x, internalFormat=0x%x, pixel_type=0x%x\n",
+           img.format(), externalFormat, internalFormat, pixel_type);
+#endif
+
+    const QImage &constRef = img; // to avoid detach in bits()...
+#ifdef QGL_USE_TEXTURE_POOL
+    QGLTexturePool::instance()->createPermanentTexture(tx_id,
+                                                        target,
+                                                        0, internalFormat,
+                                                        img.width(), img.height(),
+                                                        externalFormat,
+                                                        pixel_type,
+                                                        constRef.bits());
+#else
+    glTexImage2D(target, 0, internalFormat, img.width(), img.height(), 0, externalFormat,
+                 pixel_type, constRef.bits());
+#endif
+#if defined(QT_OPENGL_ES_2)
+    if (genMipmap)
+        glGenerateMipmap(target);
+#endif
+#ifndef QT_NO_DEBUG
+    GLenum error = glGetError();
+    if (error != GL_NO_ERROR) {
+        qWarning(" - texture upload failed, error code 0x%x, enum: %d (%x)\n", error, target, target);
+    }
+#endif
+
+#ifdef QGL_BIND_TEXTURE_DEBUG
+    static int totalUploadTime = 0;
+    totalUploadTime += time.elapsed();
+    printf(" - upload done in %d ms, (accumulated: %d ms)\n", time.elapsed(), totalUploadTime);
+#endif
+
+
+    // this assumes the size of a texture is always smaller than the max cache size
+    int cost = img.width()*img.height()*4/1024;
+    QGLTexture *texture = new QGLTexture(q, tx_id, target, options);
+    QGLTextureCache::instance()->insert(q, key, texture, cost);
+
+    return texture;
+}
+
+QGLTexture *QGLContextPrivate::textureCacheLookup(const qint64 key, GLenum target)
+{
+    Q_Q(QGLContext);
+    QGLTexture *texture = QGLTextureCache::instance()->getTexture(q, key);
+    if (texture && texture->target == target
+        && (texture->context == q || QGLContext::areSharing(q, texture->context)))
+    {
+        return texture;
+    }
+    return 0;
+}
+
+/*! \internal */
+QGLTexture *QGLContextPrivate::bindTexture(const QPixmap &pixmap, GLenum target, GLint format, QGLContext::BindOptions options)
+{
+    Q_Q(QGLContext);
+    QPixmapData *pd = pixmap.pixmapData();
+#if !defined(QT_OPENGL_ES_1)
+    if (target == GL_TEXTURE_2D && pd->classId() == QPixmapData::OpenGLClass) {
+        const QGLPixmapData *data = static_cast<const QGLPixmapData *>(pd);
+
+        if (data->isValidContext(q)) {
+            data->bind();
+            return data->texture();
+        }
+    }
+#else
+    Q_UNUSED(pd);
+#endif
+
+    const qint64 key = pixmap.cacheKey();
+    QGLTexture *texture = textureCacheLookup(key, target);
+    if (texture) {
+        if (pixmap.paintingActive()) {
+            // A QPainter is active on the pixmap - take the safe route and replace the texture.
+            q->deleteTexture(texture->id);
+            texture = 0;
+        } else {
+            glBindTexture(target, texture->id);
+            return texture;
+        }
+    }
+
+#if defined(Q_WS_X11)
+    // Try to use texture_from_pixmap
+    const QX11Info *xinfo = qt_x11Info(paintDevice);
+    if (pd->classId() == QPixmapData::X11Class && pd->pixelType() == QPixmapData::PixmapType
+        && xinfo && xinfo->screen() == pixmap.x11Info().screen()
+        && target == GL_TEXTURE_2D
+        && QApplication::instance()->thread() == QThread::currentThread())
+    {
+        if (!workaround_brokenTextureFromPixmap_init) {
+            workaround_brokenTextureFromPixmap_init = true;
+
+            const QByteArray versionString(reinterpret_cast<const char*>(glGetString(GL_VERSION)));
+            const int pos = versionString.indexOf("NVIDIA ");
+
+            if (pos >= 0) {
+                const QByteArray nvidiaVersionString = versionString.mid(pos + strlen("NVIDIA "));
+
+                if (nvidiaVersionString.startsWith("195") || nvidiaVersionString.startsWith("256"))
+                    workaround_brokenTextureFromPixmap = true;
+            }
+        }
+
+        if (!workaround_brokenTextureFromPixmap) {
+            texture = bindTextureFromNativePixmap(const_cast<QPixmap*>(&pixmap), key, options);
+            if (texture) {
+                texture->options |= QGLContext::MemoryManagedBindOption;
+                texture->boundPixmap = pd;
+                boundPixmaps.insert(pd, QPixmap(pixmap));
+            }
+        }
+    }
+#endif
+
+    if (!texture) {
+        QImage image = pixmap.toImage();
+        // If the system depth is 16 and the pixmap doesn't have an alpha channel
+        // then we convert it to RGB16 in the hope that it gets uploaded as a 16
+        // bit texture which is much faster to access than a 32-bit one.
+        if (pixmap.depth() == 16 && !image.hasAlphaChannel() )
+            image = image.convertToFormat(QImage::Format_RGB16);
+        texture = bindTexture(image, target, format, key, options);
+    }
+    // NOTE: bindTexture(const QImage&, GLenum, GLint, const qint64, bool) should never return null
+    Q_ASSERT(texture);
+
+    if (texture->id > 0)
+        QImagePixmapCleanupHooks::enableCleanupHooks(pixmap);
+
+    return texture;
+}
+
+/*! \internal */
+int QGLContextPrivate::maxTextureSize()
+{
+    if (max_texture_size != -1)
+        return max_texture_size;
+
+    glGetIntegerv(GL_MAX_TEXTURE_SIZE, &max_texture_size);
+
+#if defined(QT_OPENGL_ES)
+    return max_texture_size;
+#else
+    GLenum proxy = GL_PROXY_TEXTURE_2D;
+
+    GLint size;
+    GLint next = 64;
+    glTexImage2D(proxy, 0, GL_RGBA, next, next, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
+    glGetTexLevelParameteriv(proxy, 0, GL_TEXTURE_WIDTH, &size);
+    if (size == 0) {
+        return max_texture_size;
+    }
+    do {
+        size = next;
+        next = size * 2;
+
+        if (next > max_texture_size)
+            break;
+        glTexImage2D(proxy, 0, GL_RGBA, next, next, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
+        glGetTexLevelParameteriv(proxy, 0, GL_TEXTURE_WIDTH, &next);
+    } while (next > size);
+
+    max_texture_size = size;
+    return max_texture_size;
+#endif
+}
+
+/*!
+  Generates and binds a 2D GL texture to the current context, based
+  on \a image. The generated texture id is returned and can be used in
+  later \c glBindTexture() calls.
+
+  \overload
+*/
+GLuint QGLContext::bindTexture(const QImage &image, GLenum target, GLint format)
+{
+    if (image.isNull())
+        return 0;
+
+    Q_D(QGLContext);
+    QGLTexture *texture = d->bindTexture(image, target, format, DefaultBindOption);
+    return texture->id;
+}
+
+/*!
+    \since 4.6
+
+    Generates and binds a 2D GL texture to the current context, based
+    on \a image. The generated texture id is returned and can be used
+    in later \c glBindTexture() calls.
+
+    The \a target parameter specifies the texture target. The default
+    target is \c GL_TEXTURE_2D.
+
+    The \a format parameter sets the internal format for the
+    texture. The default format is \c GL_RGBA.
+
+    The binding \a options are a set of options used to decide how to
+    bind the texture to the context.
+
+    The texture that is generated is cached, so multiple calls to
+    bindTexture() with the same QImage will return the same texture
+    id.
+
+    Note that we assume default values for the glPixelStore() and
+    glPixelTransfer() parameters.
+
+    \sa deleteTexture()
+*/
+GLuint QGLContext::bindTexture(const QImage &image, GLenum target, GLint format, BindOptions options)
+{
+    if (image.isNull())
+        return 0;
+
+    Q_D(QGLContext);
+    QGLTexture *texture = d->bindTexture(image, target, format, options);
+    return texture->id;
+}
+
+#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
+/*! \internal */
+GLuint QGLContext::bindTexture(const QImage &image, QMacCompatGLenum target, QMacCompatGLint format)
+{
+    if (image.isNull())
+        return 0;
+
+    Q_D(QGLContext);
+    QGLTexture *texture = d->bindTexture(image, GLenum(target), GLint(format), DefaultBindOption);
+    return texture->id;
+}
+
+/*! \internal */
+GLuint QGLContext::bindTexture(const QImage &image, QMacCompatGLenum target, QMacCompatGLint format,
+                               BindOptions options)
+{
+    if (image.isNull())
+        return 0;
+
+    Q_D(QGLContext);
+    QGLTexture *texture = d->bindTexture(image, GLenum(target), GLint(format), options);
+    return texture->id;
+}
+#endif
+
+/*! \overload
+
+    Generates and binds a 2D GL texture based on \a pixmap.
+*/
+GLuint QGLContext::bindTexture(const QPixmap &pixmap, GLenum target, GLint format)
+{
+    if (pixmap.isNull())
+        return 0;
+
+    Q_D(QGLContext);
+    QGLTexture *texture = d->bindTexture(pixmap, target, format, DefaultBindOption);
+    return texture->id;
+}
+
+/*!
+  \overload
+  \since 4.6
+
+  Generates and binds a 2D GL texture to the current context, based
+  on \a pixmap.
+*/
+GLuint QGLContext::bindTexture(const QPixmap &pixmap, GLenum target, GLint format, BindOptions options)
+{
+    if (pixmap.isNull())
+        return 0;
+
+    Q_D(QGLContext);
+    QGLTexture *texture = d->bindTexture(pixmap, target, format, options);
+    return texture->id;
+}
+
+#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
+/*! \internal */
+GLuint QGLContext::bindTexture(const QPixmap &pixmap, QMacCompatGLenum target, QMacCompatGLint format)
+{
+    if (pixmap.isNull())
+        return 0;
+
+    Q_D(QGLContext);
+    QGLTexture *texture = d->bindTexture(pixmap, GLenum(target), GLint(format), DefaultBindOption);
+    return texture->id;
+}
+/*! \internal */
+GLuint QGLContext::bindTexture(const QPixmap &pixmap, QMacCompatGLenum target, QMacCompatGLint format,
+                               BindOptions options)
+{
+    if (pixmap.isNull())
+        return 0;
+
+    Q_D(QGLContext);
+    QGLTexture *texture = d->bindTexture(pixmap, GLenum(target), GLint(format), options);
+    return texture->id;
+}
+#endif
+
+/*!
+    Removes the texture identified by \a id from the texture cache,
+    and calls glDeleteTextures() to delete the texture from the
+    context.
+
+    \sa bindTexture()
+*/
+void QGLContext::deleteTexture(GLuint id)
+{
+    if (QGLTextureCache::instance()->remove(this, id))
+        return;
+    glDeleteTextures(1, &id);
+}
+
+#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
+/*! \internal */
+void QGLContext::deleteTexture(QMacCompatGLuint id)
+{
+    return deleteTexture(GLuint(id));
+}
+#endif
+
+void qt_add_rect_to_array(const QRectF &r, GLfloat *array)
+{
+    qreal left = r.left();
+    qreal right = r.right();
+    qreal top = r.top();
+    qreal bottom = r.bottom();
+
+    array[0] = left;
+    array[1] = top;
+    array[2] = right;
+    array[3] = top;
+    array[4] = right;
+    array[5] = bottom;
+    array[6] = left;
+    array[7] = bottom;
+}
+
+void qt_add_texcoords_to_array(qreal x1, qreal y1, qreal x2, qreal y2, GLfloat *array)
+{
+    array[0] = x1;
+    array[1] = y1;
+    array[2] = x2;
+    array[3] = y1;
+    array[4] = x2;
+    array[5] = y2;
+    array[6] = x1;
+    array[7] = y2;
+}
+
+#if !defined(QT_OPENGL_ES_2)
+
+static void qDrawTextureRect(const QRectF &target, GLint textureWidth, GLint textureHeight, GLenum textureTarget)
+{
+    GLfloat tx = 1.0f;
+    GLfloat ty = 1.0f;
+
+#ifdef QT_OPENGL_ES
+    Q_UNUSED(textureWidth);
+    Q_UNUSED(textureHeight);
+    Q_UNUSED(textureTarget);
+#else
+    if (textureTarget != GL_TEXTURE_2D) {
+        if (textureWidth == -1 || textureHeight == -1) {
+            glGetTexLevelParameteriv(textureTarget, 0, GL_TEXTURE_WIDTH, &textureWidth);
+            glGetTexLevelParameteriv(textureTarget, 0, GL_TEXTURE_HEIGHT, &textureHeight);
+        }
+
+        tx = GLfloat(textureWidth);
+        ty = GLfloat(textureHeight);
+    }
+#endif
+
+    GLfloat texCoordArray[4*2] = {
+        0, ty, tx, ty, tx, 0, 0, 0
+    };
+
+    GLfloat vertexArray[4*2];
+    qt_add_rect_to_array(target, vertexArray);
+
+    glVertexPointer(2, GL_FLOAT, 0, vertexArray);
+    glTexCoordPointer(2, GL_FLOAT, 0, texCoordArray);
+
+    glEnableClientState(GL_VERTEX_ARRAY);
+    glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+    glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
+
+    glDisableClientState(GL_VERTEX_ARRAY);
+    glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+}
+
+#endif // !QT_OPENGL_ES_2
+
+/*!
+    \since 4.4
+
+    This function supports the following use cases:
+
+    \list
+    \i On OpenGL and OpenGL ES 1.x it draws the given texture, \a textureId,
+    to the given target rectangle, \a target, in OpenGL model space. The
+    \a textureTarget should be a 2D texture target.
+    \i On OpenGL and OpenGL ES 2.x, if a painter is active, not inside a
+    beginNativePainting / endNativePainting block, and uses the
+    engine with type QPaintEngine::OpenGL2, the function will draw the given
+    texture, \a textureId, to the given target rectangle, \a target,
+    respecting the current painter state. This will let you draw a texture
+    with the clip, transform, render hints, and composition mode set by the
+    painter. Note that the texture target needs to be GL_TEXTURE_2D for this
+    use case, and that this is the only supported use case under OpenGL ES 2.x.
+    \endlist
+
+*/
+void QGLContext::drawTexture(const QRectF &target, GLuint textureId, GLenum textureTarget)
+{
+#if !defined(QT_OPENGL_ES) || defined(QT_OPENGL_ES_2)
+     if (d_ptr->active_engine &&
+         d_ptr->active_engine->type() == QPaintEngine::OpenGL2) {
+         QGL2PaintEngineEx *eng = static_cast<QGL2PaintEngineEx*>(d_ptr->active_engine);
+         if (!eng->isNativePaintingActive()) {
+            QRectF src(0, 0, target.width(), target.height());
+            QSize size(target.width(), target.height());
+            if (eng->drawTexture(target, textureId, size, src))
+                return;
+        }
+     }
+#endif
+
+#ifndef QT_OPENGL_ES_2
+#ifdef QT_OPENGL_ES
+    if (textureTarget != GL_TEXTURE_2D) {
+        qWarning("QGLContext::drawTexture(): texture target must be GL_TEXTURE_2D on OpenGL ES");
+        return;
+    }
+#else
+    const bool wasEnabled = glIsEnabled(GL_TEXTURE_2D);
+    GLint oldTexture;
+    glGetIntegerv(GL_TEXTURE_BINDING_2D, &oldTexture);
+#endif
+
+    glEnable(textureTarget);
+    glBindTexture(textureTarget, textureId);
+
+    qDrawTextureRect(target, -1, -1, textureTarget);
+
+#ifdef QT_OPENGL_ES
+    glDisable(textureTarget);
+#else
+    if (!wasEnabled)
+        glDisable(textureTarget);
+    glBindTexture(textureTarget, oldTexture);
+#endif
+#else
+    Q_UNUSED(target);
+    Q_UNUSED(textureId);
+    Q_UNUSED(textureTarget);
+    qWarning("drawTexture() with OpenGL ES 2.0 requires an active OpenGL2 paint engine");
+#endif
+}
+
+#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
+/*! \internal */
+void QGLContext::drawTexture(const QRectF &target, QMacCompatGLuint textureId, QMacCompatGLenum textureTarget)
+{
+    drawTexture(target, GLuint(textureId), GLenum(textureTarget));
+}
+#endif
+
+/*!
+    \since 4.4
+
+    This function supports the following use cases:
+
+    \list
+    \i By default it draws the given texture, \a textureId,
+    at the given \a point in OpenGL model space. The
+    \a textureTarget should be a 2D texture target.
+    \i If a painter is active, not inside a
+    beginNativePainting / endNativePainting block, and uses the
+    engine with type QPaintEngine::OpenGL2, the function will draw the given
+    texture, \a textureId, at the given \a point,
+    respecting the current painter state. This will let you draw a texture
+    with the clip, transform, render hints, and composition mode set by the
+    painter. Note that the texture target needs to be GL_TEXTURE_2D for this
+    use case.
+    \endlist
+
+    \note This function is not supported under any version of OpenGL ES.
+*/
+void QGLContext::drawTexture(const QPointF &point, GLuint textureId, GLenum textureTarget)
+{
+#ifdef QT_OPENGL_ES
+    Q_UNUSED(point);
+    Q_UNUSED(textureId);
+    Q_UNUSED(textureTarget);
+    qWarning("drawTexture(const QPointF &point, GLuint textureId, GLenum textureTarget) not supported with OpenGL ES, use rect version instead");
+#else
+
+    const bool wasEnabled = glIsEnabled(GL_TEXTURE_2D);
+    GLint oldTexture;
+    glGetIntegerv(GL_TEXTURE_BINDING_2D, &oldTexture);
+
+    glEnable(textureTarget);
+    glBindTexture(textureTarget, textureId);
+
+    GLint textureWidth;
+    GLint textureHeight;
+
+    glGetTexLevelParameteriv(textureTarget, 0, GL_TEXTURE_WIDTH, &textureWidth);
+    glGetTexLevelParameteriv(textureTarget, 0, GL_TEXTURE_HEIGHT, &textureHeight);
+
+    if (d_ptr->active_engine &&
+        d_ptr->active_engine->type() == QPaintEngine::OpenGL2) {
+        QGL2PaintEngineEx *eng = static_cast<QGL2PaintEngineEx*>(d_ptr->active_engine);
+        if (!eng->isNativePaintingActive()) {
+            QRectF dest(point, QSizeF(textureWidth, textureHeight));
+            QRectF src(0, 0, textureWidth, textureHeight);
+            QSize size(textureWidth, textureHeight);
+            if (eng->drawTexture(dest, textureId, size, src))
+                return;
+        }
+    }
+
+    qDrawTextureRect(QRectF(point, QSizeF(textureWidth, textureHeight)), textureWidth, textureHeight, textureTarget);
+
+    if (!wasEnabled)
+        glDisable(textureTarget);
+    glBindTexture(textureTarget, oldTexture);
+#endif
+}
+
+#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
+/*! \internal */
+void QGLContext::drawTexture(const QPointF &point, QMacCompatGLuint textureId, QMacCompatGLenum textureTarget)
+{
+    drawTexture(point, GLuint(textureId), GLenum(textureTarget));
+}
+#endif
+
+
+/*!
+    This function sets the limit for the texture cache to \a size,
+    expressed in kilobytes.
+
+    By default, the cache limit is approximately 64 MB.
+
+    \sa textureCacheLimit()
+*/
+void QGLContext::setTextureCacheLimit(int size)
+{
+    QGLTextureCache::instance()->setMaxCost(size);
+}
+
+/*!
+    Returns the current texture cache limit in kilobytes.
+
+    \sa setTextureCacheLimit()
+*/
+int QGLContext::textureCacheLimit()
+{
+    return QGLTextureCache::instance()->maxCost();
+}
+
+
+/*!
+    \fn QGLFormat QGLContext::format() const
+
+    Returns the frame buffer format that was obtained (this may be a
+    subset of what was requested).
+
+    \sa requestedFormat()
+*/
+
+/*!
+    \fn QGLFormat QGLContext::requestedFormat() const
+
+    Returns the frame buffer format that was originally requested in
+    the constructor or setFormat().
+
+    \sa format()
+*/
+
+/*!
+    Sets a \a format for this context. The context is \link reset()
+    reset\endlink.
+
+    Call create() to create a new GL context that tries to match the
+    new format.
+
+    \snippet doc/src/snippets/code/src_opengl_qgl.cpp 7
+
+    \sa format(), reset(), create()
+*/
+
+void QGLContext::setFormat(const QGLFormat &format)
+{
+    Q_D(QGLContext);
+    reset();
+    d->glFormat = d->reqFormat = format;
+}
+
+/*!
+    \internal
+*/
+void QGLContext::setDevice(QPaintDevice *pDev)
+{
+    Q_D(QGLContext);
+    if (isValid())
+        reset();
+    d->paintDevice = pDev;
+    if (d->paintDevice && (d->paintDevice->devType() != QInternal::Widget
+                           && d->paintDevice->devType() != QInternal::Pixmap
+                           && d->paintDevice->devType() != QInternal::Pbuffer)) {
+        qWarning("QGLContext: Unsupported paint device type");
+    }
+}
+
+/*!
+    \fn bool QGLContext::isValid() const
+
+    Returns true if a GL rendering context has been successfully
+    created; otherwise returns false.
+*/
+
+/*!
+    \fn void QGLContext::setValid(bool valid)
+    \internal
+
+    Forces the GL rendering context to be valid.
+*/
+
+/*!
+    \fn bool QGLContext::isSharing() const
+
+    Returns true if this context is sharing its GL context with
+    another QGLContext, otherwise false is returned. Note that context
+    sharing might not be supported between contexts with different
+    formats.
+*/
+
+/*!
+    Returns true if \a context1 and \a context2 are sharing their
+    GL resources such as textures, shader programs, etc;
+    otherwise returns false.
+
+    \since 4.6
+*/
+bool QGLContext::areSharing(const QGLContext *context1, const QGLContext *context2)
+{
+    if (!context1 || !context2)
+        return false;
+    return context1->d_ptr->group == context2->d_ptr->group;
+}
+
+/*!
+    \fn bool QGLContext::deviceIsPixmap() const
+
+    Returns true if the paint device of this context is a pixmap;
+    otherwise returns false.
+*/
+
+/*!
+    \fn bool QGLContext::windowCreated() const
+
+    Returns true if a window has been created for this context;
+    otherwise returns false.
+
+    \sa setWindowCreated()
+*/
+
+/*!
+    \fn void QGLContext::setWindowCreated(bool on)
+
+    If \a on is true the context has had a window created for it. If
+    \a on is false no window has been created for the context.
+
+    \sa windowCreated()
+*/
+
+/*!
+    \fn uint QGLContext::colorIndex(const QColor& c) const
+
+    \internal
+
+    Returns a colormap index for the color c, in ColorIndex mode. Used
+    by qglColor() and qglClearColor().
+*/
+
+
+/*!
+    \fn bool QGLContext::initialized() const
+
+    Returns true if this context has been initialized, i.e. if
+    QGLWidget::initializeGL() has been performed on it; otherwise
+    returns false.
+
+    \sa setInitialized()
+*/
+
+/*!
+    \fn void QGLContext::setInitialized(bool on)
+
+    If \a on is true the context has been initialized, i.e.
+    QGLContext::setInitialized() has been called on it. If \a on is
+    false the context has not been initialized.
+
+    \sa initialized()
+*/
+
+/*!
+    \fn const QGLContext* QGLContext::currentContext()
+
+    Returns the current context, i.e. the context to which any OpenGL
+    commands will currently be directed. Returns 0 if no context is
+    current.
+
+    \sa makeCurrent()
+*/
+
+/*!
+    \fn QColor QGLContext::overlayTransparentColor() const
+
+    If this context is a valid context in an overlay plane, returns
+    the plane's transparent color. Otherwise returns an \link
+    QColor::isValid() invalid \endlink color.
+
+    The returned color's \link QColor::pixel() pixel \endlink value is
+    the index of the transparent color in the colormap of the overlay
+    plane. (Naturally, the color's RGB values are meaningless.)
+
+    The returned QColor object will generally work as expected only
+    when passed as the argument to QGLWidget::qglColor() or
+    QGLWidget::qglClearColor(). Under certain circumstances it can
+    also be used to draw transparent graphics with a QPainter. See the
+    examples/opengl/overlay_x11 example for details.
+*/
+
+
+/*!
+    Creates the GL context. Returns true if it was successful in
+    creating a valid GL rendering context on the paint device
+    specified in the constructor; otherwise returns false (i.e. the
+    context is invalid).
+
+    After successful creation, format() returns the set of features of
+    the created GL rendering context.
+
+    If \a shareContext points to a valid QGLContext, this method will
+    try to establish OpenGL display list and texture object sharing
+    between this context and the \a shareContext. Note that this may
+    fail if the two contexts have different \l {format()} {formats}.
+    Use isSharing() to see if sharing is in effect.
+
+    \warning Implementation note: initialization of C++ class
+    members usually takes place in the class constructor. QGLContext
+    is an exception because it must be simple to customize. The
+    virtual functions chooseContext() (and chooseVisual() for X11) can
+    be reimplemented in a subclass to select a particular context. The
+    problem is that virtual functions are not properly called during
+    construction (even though this is correct C++) because C++
+    constructs class hierarchies from the bottom up. For this reason
+    we need a create() function.
+
+    \sa chooseContext(), format(), isValid()
+*/
+
+bool QGLContext::create(const QGLContext* shareContext)
+{
+    Q_D(QGLContext);
+#ifdef Q_WS_QPA
+    if (!d->paintDevice && !d->platformContext)
+#else
+    if (!d->paintDevice)
+#endif
+        return false;
+
+    reset();
+    d->valid = chooseContext(shareContext);
+    if (d->valid && d->paintDevice && d->paintDevice->devType() == QInternal::Widget) {
+        QWidgetPrivate *wd = qt_widget_private(static_cast<QWidget *>(d->paintDevice));
+        wd->usesDoubleBufferedGLContext = d->glFormat.doubleBuffer();
+    }
+#ifndef Q_WS_QPA //We do this in choose context->setupSharing()
+    if (d->sharing)  // ok, we managed to share
+        QGLContextGroup::addShare(this, shareContext);
+#endif
+    return d->valid;
+}
+
+bool QGLContext::isValid() const
+{
+    Q_D(const QGLContext);
+    return d->valid;
+}
+
+void QGLContext::setValid(bool valid)
+{
+    Q_D(QGLContext);
+    d->valid = valid;
+}
+
+bool QGLContext::isSharing() const
+{
+    Q_D(const QGLContext);
+    return d->group->isSharing();
+}
+
+QGLFormat QGLContext::format() const
+{
+    Q_D(const QGLContext);
+    return d->glFormat;
+}
+
+QGLFormat QGLContext::requestedFormat() const
+{
+    Q_D(const QGLContext);
+    return d->reqFormat;
+}
+
+ QPaintDevice* QGLContext::device() const
+{
+    Q_D(const QGLContext);
+    return d->paintDevice;
+}
+
+bool QGLContext::deviceIsPixmap() const
+{
+    Q_D(const QGLContext);
+    return d->paintDevice->devType() == QInternal::Pixmap;
+}
+
+
+bool QGLContext::windowCreated() const
+{
+    Q_D(const QGLContext);
+    return d->crWin;
+}
+
+
+void QGLContext::setWindowCreated(bool on)
+{
+    Q_D(QGLContext);
+    d->crWin = on;
+}
+
+bool QGLContext::initialized() const
+{
+    Q_D(const QGLContext);
+    return d->initDone;
+}
+
+void QGLContext::setInitialized(bool on)
+{
+    Q_D(QGLContext);
+    d->initDone = on;
+}
+
+const QGLContext* QGLContext::currentContext()
+{
+#ifdef Q_WS_QPA
+    if (const QPlatformGLContext *threadContext = QPlatformGLContext::currentContext()) {
+        return QGLContext::fromPlatformGLContext(const_cast<QPlatformGLContext *>(threadContext));
+    }
+    return 0;
+#else
+    QGLThreadContext *threadContext = qgl_context_storage.localData();
+    if (threadContext)
+        return threadContext->context;
+    return 0;
+#endif //Q_WS_QPA
+}
+
+void QGLContextPrivate::setCurrentContext(QGLContext *context)
+{
+#ifdef Q_WS_QPA
+    Q_UNUSED(context);
+#else
+    QGLThreadContext *threadContext = qgl_context_storage.localData();
+    if (!threadContext) {
+        if (!QThread::currentThread()) {
+            // We don't have a current QThread, so just set the static.
+            QGLContext::currentCtx = context;
+            return;
+        }
+        threadContext = new QGLThreadContext;
+        qgl_context_storage.setLocalData(threadContext);
+    }
+    threadContext->context = context;
+    QGLContext::currentCtx = context; // XXX: backwards-compat, not thread-safe
+#endif
+}
+
+/*!
+    \fn bool QGLContext::chooseContext(const QGLContext* shareContext = 0)
+
+    This semi-internal function is called by create(). It creates a
+    system-dependent OpenGL handle that matches the format() of \a
+    shareContext as closely as possible, returning true if successful
+    or false if a suitable handle could not be found.
+
+    On Windows, it calls the virtual function choosePixelFormat(),
+    which finds a matching pixel format identifier. On X11, it calls
+    the virtual function chooseVisual() which finds an appropriate X
+    visual. On other platforms it may work differently.
+*/
+
+/*! \fn int QGLContext::choosePixelFormat(void* dummyPfd, HDC pdc)
+
+    \bold{Win32 only:} This virtual function chooses a pixel format
+    that matches the OpenGL \link setFormat() format\endlink.
+    Reimplement this function in a subclass if you need a custom
+    context.
+
+    \warning The \a dummyPfd pointer and \a pdc are used as a \c
+    PIXELFORMATDESCRIPTOR*. We use \c void to avoid using
+    Windows-specific types in our header files.
+
+    \sa chooseContext()
+*/
+
+/*! \fn void *QGLContext::chooseVisual()
+
+  \bold{X11 only:} This virtual function tries to find a visual that
+  matches the format, reducing the demands if the original request
+  cannot be met.
+
+  The algorithm for reducing the demands of the format is quite
+  simple-minded, so override this method in your subclass if your
+  application has spcific requirements on visual selection.
+
+  \sa chooseContext()
+*/
+
+/*! \fn void *QGLContext::tryVisual(const QGLFormat& f, int bufDepth)
+  \internal
+
+  \bold{X11 only:} This virtual function chooses a visual that matches
+  the OpenGL \link format() format\endlink. Reimplement this function
+  in a subclass if you need a custom visual.
+
+  \sa chooseContext()
+*/
+
+/*!
+    \fn void QGLContext::reset()
+
+    Resets the context and makes it invalid.
+
+    \sa create(), isValid()
+*/
+
+
+/*!
+    \fn void QGLContext::makeCurrent()
+
+    Makes this context the current OpenGL rendering context. All GL
+    functions you call operate on this context until another context
+    is made current.
+
+    In some very rare cases the underlying call may fail. If this
+    occurs an error message is output to stderr.
+*/
+
+
+/*!
+    \fn void QGLContext::swapBuffers() const
+
+    Swaps the screen contents with an off-screen buffer. Only works if
+    the context is in double buffer mode.
+
+    \sa QGLFormat::setDoubleBuffer()
+*/
+
+
+/*!
+    \fn void QGLContext::doneCurrent()
+
+    Makes no GL context the current context. Normally, you do not need
+    to call this function; QGLContext calls it as necessary.
+*/
+
+
+/*!
+    \fn QPaintDevice* QGLContext::device() const
+
+    Returns the paint device set for this context.
+
+    \sa QGLContext::QGLContext()
+*/
+
+/*!
+    \obsolete
+    \fn void QGLContext::generateFontDisplayLists(const QFont& font, int listBase)
+
+    Generates a set of 256 display lists for the 256 first characters
+    in the font \a font. The first list will start at index \a listBase.
+
+    \sa QGLWidget::renderText()
+*/
+
+
+
+/*****************************************************************************
+  QGLWidget implementation
+ *****************************************************************************/
+
+
+/*!
+    \class QGLWidget
+    \brief The QGLWidget class is a widget for rendering OpenGL graphics.
+
+    \ingroup painting-3D
+
+
+    QGLWidget provides functionality for displaying OpenGL graphics
+    integrated into a Qt application. It is very simple to use. You
+    inherit from it and use the subclass like any other QWidget,
+    except that you have the choice between using QPainter and
+    standard OpenGL rendering commands.
+
+    QGLWidget provides three convenient virtual functions that you can
+    reimplement in your subclass to perform the typical OpenGL tasks:
+
+    \list
+    \i paintGL() - Renders the OpenGL scene. Gets called whenever the widget
+    needs to be updated.
+    \i resizeGL() - Sets up the OpenGL viewport, projection, etc. Gets
+    called whenever the widget has been resized (and also when it
+    is shown for the first time because all newly created widgets get a
+    resize event automatically).
+    \i initializeGL() - Sets up the OpenGL rendering context, defines display
+    lists, etc. Gets called once before the first time resizeGL() or
+    paintGL() is called.
+    \endlist
+
+    Here is a rough outline of how a QGLWidget subclass might look:
+
+    \snippet doc/src/snippets/code/src_opengl_qgl.cpp 8
+
+    If you need to trigger a repaint from places other than paintGL()
+    (a typical example is when using \link QTimer timers\endlink to
+    animate scenes), you should call the widget's updateGL() function.
+
+    Your widget's OpenGL rendering context is made current when
+    paintGL(), resizeGL(), or initializeGL() is called. If you need to
+    call the standard OpenGL API functions from other places (e.g. in
+    your widget's constructor or in your own paint functions), you
+    must call makeCurrent() first.
+
+    QGLWidget provides functions for requesting a new display \link
+    QGLFormat format\endlink and you can also create widgets with
+    customized rendering \link QGLContext contexts\endlink.
+
+    You can also share OpenGL display lists between QGLWidget objects (see
+    the documentation of the QGLWidget constructors for details).
+
+    Note that under Windows, the QGLContext belonging to a QGLWidget
+    has to be recreated when the QGLWidget is reparented. This is
+    necessary due to limitations on the Windows platform. This will
+    most likely cause problems for users that have subclassed and
+    installed their own QGLContext on a QGLWidget. It is possible to
+    work around this issue by putting the QGLWidget inside a dummy
+    widget and then reparenting the dummy widget, instead of the
+    QGLWidget. This will side-step the issue altogether, and is what
+    we recommend for users that need this kind of functionality.
+
+    On Mac OS X, when Qt is built with Cocoa support, a QGLWidget
+    can't have any sibling widgets placed ontop of itself. This is due
+    to limitations in the Cocoa API and is not supported by Apple.
+
+    \section1 Overlays
+
+    The QGLWidget creates a GL overlay context in addition to the
+    normal context if overlays are supported by the underlying system.
+
+    If you want to use overlays, you specify it in the \link QGLFormat
+    format\endlink. (Note: Overlay must be requested in the format
+    passed to the QGLWidget constructor.) Your GL widget should also
+    implement some or all of these virtual methods:
+
+    \list
+    \i paintOverlayGL()
+    \i resizeOverlayGL()
+    \i initializeOverlayGL()
+    \endlist
+
+    These methods work in the same way as the normal paintGL() etc.
+    functions, except that they will be called when the overlay
+    context is made current. You can explicitly make the overlay
+    context current by using makeOverlayCurrent(), and you can access
+    the overlay context directly (e.g. to ask for its transparent
+    color) by calling overlayContext().
+
+    On X servers in which the default visual is in an overlay plane,
+    non-GL Qt windows can also be used for overlays.
+
+    \section1 Painting Techniques
+
+    As described above, subclass QGLWidget to render pure 3D content in the
+    following way:
+
+    \list
+    \o Reimplement the QGLWidget::initializeGL() and QGLWidget::resizeGL() to
+       set up the OpenGL state and provide a perspective transformation.
+    \o Reimplement QGLWidget::paintGL() to paint the 3D scene, calling only
+       OpenGL functions to draw on the widget.
+    \endlist
+
+    It is also possible to draw 2D graphics onto a QGLWidget subclass, it is necessary
+    to reimplement QGLWidget::paintEvent() and do the following:
+
+    \list
+    \o Construct a QPainter object.
+    \o Initialize it for use on the widget with the QPainter::begin() function.
+    \o Draw primitives using QPainter's member functions.
+    \o Call QPainter::end() to finish painting.
+    \endlist
+
+    Overpainting 2D content on top of 3D content takes a little more effort.
+    One approach to doing this is shown in the
+    \l{Overpainting Example}{Overpainting} example.
+
+    \section1 Threading
+
+    As of Qt version 4.8, support for doing threaded GL rendering has
+    been improved. There are three scenarios that we currently support:
+    \list
+    \o 1. Buffer swapping in a thread.
+
+    Swapping buffers in a double buffered context may be a
+    synchronous, locking call that may be a costly operation in some
+    GL implementations. Especially so on embedded devices. It's not
+    optimal to have the CPU idling while the GPU is doing a buffer
+    swap. In those cases it is possible to do the rendering in the
+    main thread and do the actual buffer swap in a separate
+    thread. This can be done with the following steps:
+
+    1. Call doneCurrent() in the main thread when the rendering is
+    finished.
+
+    2. Notify the swapping thread that it can grab the context.
+
+    3. Make the rendering context current in the swapping thread with
+    makeCurrent() and then call swapBuffers().
+
+    4. Call doneCurrent() in the swapping thread and notify the main
+    thread that swapping is done.
+
+    Doing this will free up the main thread so that it can continue
+    with, for example, handling UI events or network requests. Even if
+    there is a context swap involved, it may be preferable compared to
+    having the main thread wait while the GPU finishes the swap
+    operation. Note that this is highly implementation dependent.
+
+    \o 2. Texture uploading in a thread.
+
+    Doing texture uploads in a thread may be very useful for
+    applications handling large amounts of images that needs to be
+    displayed, like for instance a photo gallery application. This is
+    supported in Qt through the existing bindTexture() API. A simple
+    way of doing this is to create two sharing QGLWidgets. One is made
+    current in the main GUI thread, while the other is made current in
+    the texture upload thread. The widget in the uploading thread is
+    never shown, it is only used for sharing textures with the main
+    thread. For each texture that is bound via bindTexture(), notify
+    the main thread so that it can start using the texture.
+
+    \o 3. Using QPainter to draw into a QGLWidget in a thread.
+
+    In Qt 4.8, it is possible to draw into a QGLWidget using a
+    QPainter in a separate thread. Note that this is also possible for
+    QGLPixelBuffers and QGLFramebufferObjects. Since this is only
+    supported in the GL 2 paint engine, OpenGL 2.0 or OpenGL ES 2.0 is
+    required.
+
+    QGLWidgets can only be created in the main GUI thread. This means
+    a call to doneCurrent() is necessary to release the GL context
+    from the main thread, before the widget can be drawn into by
+    another thread. Also, the main GUI thread will dispatch resize and
+    paint events to a QGLWidget when the widget is resized, or parts
+    of it becomes exposed or needs redrawing. It is therefore
+    necessary to handle those events because the default
+    implementations inside QGLWidget will try to make the QGLWidget's
+    context current, which again will interfere with any threads
+    rendering into the widget. Reimplement QGLWidget::paintEvent() and
+    QGLWidget::resizeEvent() to notify the rendering thread that a
+    resize or update is necessary, and be careful not to call the base
+    class implementation. If you are rendering an animation, it might
+    not be necessary to handle the paint event at all since the
+    rendering thread is doing regular updates. Then it would be enough
+    to reimplement QGLWidget::paintEvent() to do nothing.
+
+    \endlist
+
+    As a general rule when doing threaded rendering: be aware that
+    binding and releasing contexts in different threads have to be
+    synchronized by the user. A GL rendering context can only be
+    current in one thread at any time. If you try to open a QPainter
+    on a QGLWidget and the widget's rendering context is current in
+    another thread, it will fail.
+
+    Note that under X11 it is necessary to set the
+    Qt::AA_X11InitThreads application attribute to make the X11
+    library and GLX calls thread safe, otherwise the above scenarios
+    will fail.
+
+    In addition to this, rendering using raw GL calls in a separate
+    thread is supported.
+
+    \e{OpenGL is a trademark of Silicon Graphics, Inc. in the United States and other
+    countries.}
+
+    \sa QGLPixelBuffer, {Hello GL Example}, {2D Painting Example}, {Overpainting Example},
+        {Grabber Example}
+*/
+
+/*!
+    Constructs an OpenGL widget with a \a parent widget.
+
+    The \link QGLFormat::defaultFormat() default format\endlink is
+    used. The widget will be \link isValid() invalid\endlink if the
+    system has no \link QGLFormat::hasOpenGL() OpenGL support\endlink.
+
+    The \a parent and widget flag, \a f, arguments are passed
+    to the QWidget constructor.
+
+    If \a shareWidget is a valid QGLWidget, this widget will share
+    OpenGL display lists and texture objects with \a shareWidget. But
+    if \a shareWidget and this widget have different \l {format()}
+    {formats}, sharing might not be possible. You can check whether
+    sharing is in effect by calling isSharing().
+
+    The initialization of OpenGL rendering state, etc. should be done
+    by overriding the initializeGL() function, rather than in the
+    constructor of your QGLWidget subclass.
+
+    \sa QGLFormat::defaultFormat(), {Textures Example}
+*/
+
+QGLWidget::QGLWidget(QWidget *parent, const QGLWidget* shareWidget, Qt::WindowFlags f)
+    : QWidget(*(new QGLWidgetPrivate), parent, f | Qt::MSWindowsOwnDC)
+{
+    Q_D(QGLWidget);
+    setAttribute(Qt::WA_PaintOnScreen);
+    setAttribute(Qt::WA_NoSystemBackground);
+    setAutoFillBackground(true); // for compatibility
+    d->init(new QGLContext(QGLFormat::defaultFormat(), this), shareWidget);
+}
+
+
+/*!
+    Constructs an OpenGL widget with parent \a parent.
+
+    The \a format argument specifies the desired \link QGLFormat
+    rendering options \endlink. If the underlying OpenGL/Window system
+    cannot satisfy all the features requested in \a format, the
+    nearest subset of features will be used. After creation, the
+    format() method will return the actual format obtained.
+
+    The widget will be \link isValid() invalid\endlink if the system
+    has no \link QGLFormat::hasOpenGL() OpenGL support\endlink.
+
+    The \a parent and widget flag, \a f, arguments are passed
+    to the QWidget constructor.
+
+    If \a shareWidget is a valid QGLWidget, this widget will share
+    OpenGL display lists and texture objects with \a shareWidget. But
+    if \a shareWidget and this widget have different \l {format()}
+    {formats}, sharing might not be possible. You can check whether
+    sharing is in effect by calling isSharing().
+
+    The initialization of OpenGL rendering state, etc. should be done
+    by overriding the initializeGL() function, rather than in the
+    constructor of your QGLWidget subclass.
+
+    \sa QGLFormat::defaultFormat(), isValid()
+*/
+
+QGLWidget::QGLWidget(const QGLFormat &format, QWidget *parent, const QGLWidget* shareWidget,
+                     Qt::WindowFlags f)
+    : QWidget(*(new QGLWidgetPrivate), parent, f | Qt::MSWindowsOwnDC)
+{
+    Q_D(QGLWidget);
+    setAttribute(Qt::WA_PaintOnScreen);
+    setAttribute(Qt::WA_NoSystemBackground);
+    setAutoFillBackground(true); // for compatibility
+    d->init(new QGLContext(format, this), shareWidget);
+}
+
+/*!
+    Constructs an OpenGL widget with parent \a parent.
+
+    The \a context argument is a pointer to the QGLContext that
+    you wish to be bound to this widget. This allows you to pass in
+    your own QGLContext sub-classes.
+
+    The widget will be \link isValid() invalid\endlink if the system
+    has no \link QGLFormat::hasOpenGL() OpenGL support\endlink.
+
+    The \a parent and widget flag, \a f, arguments are passed
+    to the QWidget constructor.
+
+    If \a shareWidget is a valid QGLWidget, this widget will share
+    OpenGL display lists and texture objects with \a shareWidget. But
+    if \a shareWidget and this widget have different \l {format()}
+    {formats}, sharing might not be possible. You can check whether
+    sharing is in effect by calling isSharing().
+
+    The initialization of OpenGL rendering state, etc. should be done
+    by overriding the initializeGL() function, rather than in the
+    constructor of your QGLWidget subclass.
+
+    \sa QGLFormat::defaultFormat(), isValid()
+*/
+QGLWidget::QGLWidget(QGLContext *context, QWidget *parent, const QGLWidget *shareWidget,
+                     Qt::WindowFlags f)
+    : QWidget(*(new QGLWidgetPrivate), parent, f | Qt::MSWindowsOwnDC)
+{
+    Q_D(QGLWidget);
+    setAttribute(Qt::WA_PaintOnScreen);
+    setAttribute(Qt::WA_NoSystemBackground);
+    setAutoFillBackground(true); // for compatibility
+    d->init(context, shareWidget);
+}
+
+/*!
+    Destroys the widget.
+*/
+
+QGLWidget::~QGLWidget()
+{
+    Q_D(QGLWidget);
+#if defined(GLX_MESA_release_buffers) && defined(QGL_USE_MESA_EXT)
+    bool doRelease = (glcx && glcx->windowCreated());
+#endif
+    delete d->glcx;
+    d->glcx = 0;
+#if defined(Q_WS_WIN)
+    delete d->olcx;
+    d->olcx = 0;
+#endif
+#if defined(GLX_MESA_release_buffers) && defined(QGL_USE_MESA_EXT)
+    if (doRelease)
+        glXReleaseBuffersMESA(x11Display(), winId());
+#endif
+    d->cleanupColormaps();
+
+#ifdef Q_WS_MAC
+    QWidget *current = parentWidget();
+    while (current) {
+        qt_widget_private(current)->glWidgets.removeAll(QWidgetPrivate::GlWidgetInfo(this));
+        if (current->isWindow())
+            break;
+        current = current->parentWidget();
+    };
+#endif
+}
+
+/*!
+    \fn QGLFormat QGLWidget::format() const
+
+    Returns the format of the contained GL rendering context.
+*/
+
+/*!
+    \fn bool QGLWidget::doubleBuffer() const
+
+    Returns true if the contained GL rendering context has double
+    buffering; otherwise returns false.
+
+    \sa QGLFormat::doubleBuffer()
+*/
+
+/*!
+    \fn void QGLWidget::setAutoBufferSwap(bool on)
+
+    If \a on is true automatic GL buffer swapping is switched on;
+    otherwise it is switched off.
+
+    If \a on is true and the widget is using a double-buffered format,
+    the background and foreground GL buffers will automatically be
+    swapped after each paintGL() call.
+
+    The buffer auto-swapping is on by default.
+
+    \sa autoBufferSwap(), doubleBuffer(), swapBuffers()
+*/
+
+/*!
+    \fn bool QGLWidget::autoBufferSwap() const
+
+    Returns true if the widget is doing automatic GL buffer swapping;
+    otherwise returns false.
+
+    \sa setAutoBufferSwap()
+*/
+
+/*!
+    \fn void *QGLContext::getProcAddress(const QString &proc) const
+
+    Returns a function pointer to the GL extension function passed in
+    \a proc. 0 is returned if a pointer to the function could not be
+    obtained.
+*/
+
+/*!
+    \fn bool QGLWidget::isValid() const
+
+    Returns true if the widget has a valid GL rendering context;
+    otherwise returns false. A widget will be invalid if the system
+    has no \link QGLFormat::hasOpenGL() OpenGL support\endlink.
+*/
+
+bool QGLWidget::isValid() const
+{
+    Q_D(const QGLWidget);
+    return d->glcx && d->glcx->isValid();
+}
+
+/*!
+    \fn bool QGLWidget::isSharing() const
+
+    Returns true if this widget's GL context is shared with another GL
+    context, otherwise false is returned. Context sharing might not be
+    possible if the widgets use different formats.
+
+    \sa format()
+*/
+
+bool QGLWidget::isSharing() const
+{
+    Q_D(const QGLWidget);
+    return d->glcx->isSharing();
+}
+
+/*!
+    \fn void QGLWidget::makeCurrent()
+
+    Makes this widget the current widget for OpenGL operations, i.e.
+    makes the widget's rendering context the current OpenGL rendering
+    context.
+*/
+
+void QGLWidget::makeCurrent()
+{
+    Q_D(QGLWidget);
+    d->glcx->makeCurrent();
+}
+
+/*!
+    \fn void QGLWidget::doneCurrent()
+
+    Makes no GL context the current context. Normally, you do not need
+    to call this function; QGLContext calls it as necessary. However,
+    it may be useful in multithreaded environments.
+*/
+
+void QGLWidget::doneCurrent()
+{
+    Q_D(QGLWidget);
+    d->glcx->doneCurrent();
+}
+
+/*!
+    \fn void QGLWidget::swapBuffers()
+
+    Swaps the screen contents with an off-screen buffer. This only
+    works if the widget's format specifies double buffer mode.
+
+    Normally, there is no need to explicitly call this function
+    because it is done automatically after each widget repaint, i.e.
+    each time after paintGL() has been executed.
+
+    \sa doubleBuffer(), setAutoBufferSwap(), QGLFormat::setDoubleBuffer()
+*/
+
+void QGLWidget::swapBuffers()
+{
+    Q_D(QGLWidget);
+    d->glcx->swapBuffers();
+}
+
+
+/*!
+    \fn const QGLContext* QGLWidget::overlayContext() const
+
+    Returns the overlay context of this widget, or 0 if this widget
+    has no overlay.
+
+    \sa context()
+*/
+
+
+
+/*!
+    \fn void QGLWidget::makeOverlayCurrent()
+
+    Makes the overlay context of this widget current. Use this if you
+    need to issue OpenGL commands to the overlay context outside of
+    initializeOverlayGL(), resizeOverlayGL(), and paintOverlayGL().
+
+    Does nothing if this widget has no overlay.
+
+    \sa makeCurrent()
+*/
+
+
+/*!
+  \obsolete
+
+  Sets a new format for this widget.
+
+  If the underlying OpenGL/Window system cannot satisfy all the
+  features requested in \a format, the nearest subset of features will
+  be used. After creation, the format() method will return the actual
+  rendering context format obtained.
+
+  The widget will be assigned a new QGLContext, and the initializeGL()
+  function will be executed for this new context before the first
+  resizeGL() or paintGL().
+
+  This method will try to keep display list and texture object sharing
+  in effect with other QGLWidget objects, but changing the format might make
+  sharing impossible. Use isSharing() to see if sharing is still in
+  effect.
+
+  \sa format(), isSharing(), isValid()
+*/
+
+void QGLWidget::setFormat(const QGLFormat &format)
+{
+    setContext(new QGLContext(format,this));
+}
+
+
+
+
+/*!
+    \fn const QGLContext *QGLWidget::context() const
+
+    Returns the context of this widget.
+
+    It is possible that the context is not valid (see isValid()), for
+    example, if the underlying hardware does not support the format
+    attributes that were requested.
+*/
+
+/*
+  \fn void QGLWidget::setContext(QGLContext *context,
+                                 const QGLContext* shareContext,
+                                 bool deleteOldContext)
+  \obsolete
+
+  Sets a new context for this widget. The QGLContext \a context must
+  be created using \e new. QGLWidget will delete \a context when
+  another context is set or when the widget is destroyed.
+
+  If \a context is invalid, QGLContext::create() is performed on
+  it. The initializeGL() function will then be executed for the new
+  context before the first resizeGL() or paintGL().
+
+  If \a context is invalid, this method will try to keep display list
+  and texture object sharing in effect, or (if \a shareContext points
+  to a valid context) start display list and texture object sharing
+  with that context, but sharing might be impossible if the two
+  contexts have different \l {format()} {formats}. Use isSharing() to
+  see whether sharing is in effect.
+
+  If \a deleteOldContext is true (the default), the existing context
+  will be deleted. You may use false here if you have kept a pointer
+  to the old context (as returned by context()), and want to restore
+  that context later.
+
+  \sa context(), isSharing()
+*/
+
+
+
+/*!
+    \fn void QGLWidget::updateGL()
+
+    Updates the widget by calling glDraw().
+*/
+
+void QGLWidget::updateGL()
+{
+    if (updatesEnabled())
+        glDraw();
+}
+
+
+/*!
+    \fn void QGLWidget::updateOverlayGL()
+
+    Updates the widget's overlay (if any). Will cause the virtual
+    function paintOverlayGL() to be executed.
+
+    The widget's rendering context will become the current context and
+    initializeGL() will be called if it hasn't already been called.
+*/
+
+
+/*!
+    This virtual function is called once before the first call to
+    paintGL() or resizeGL(), and then once whenever the widget has
+    been assigned a new QGLContext. Reimplement it in a subclass.
+
+    This function should set up any required OpenGL context rendering
+    flags, defining display lists, etc.
+
+    There is no need to call makeCurrent() because this has already
+    been done when this function is called.
+*/
+
+void QGLWidget::initializeGL()
+{
+}
+
+
+/*!
+    This virtual function is called whenever the widget needs to be
+    painted. Reimplement it in a subclass.
+
+    There is no need to call makeCurrent() because this has already
+    been done when this function is called.
+*/
+
+void QGLWidget::paintGL()
+{
+}
+
+
+/*!
+    \fn void QGLWidget::resizeGL(int width , int height)
+
+    This virtual function is called whenever the widget has been
+    resized. The new size is passed in \a width and \a height.
+    Reimplement it in a subclass.
+
+    There is no need to call makeCurrent() because this has already
+    been done when this function is called.
+*/
+
+void QGLWidget::resizeGL(int, int)
+{
+}
+
+
+
+/*!
+    This virtual function is used in the same manner as initializeGL()
+    except that it operates on the widget's overlay context instead of
+    the widget's main context. This means that initializeOverlayGL()
+    is called once before the first call to paintOverlayGL() or
+    resizeOverlayGL(). Reimplement it in a subclass.
+
+    This function should set up any required OpenGL context rendering
+    flags, defining display lists, etc. for the overlay context.
+
+    There is no need to call makeOverlayCurrent() because this has
+    already been done when this function is called.
+*/
+
+void QGLWidget::initializeOverlayGL()
+{
+}
+
+
+/*!
+    This virtual function is used in the same manner as paintGL()
+    except that it operates on the widget's overlay context instead of
+    the widget's main context. This means that paintOverlayGL() is
+    called whenever the widget's overlay needs to be painted.
+    Reimplement it in a subclass.
+
+    There is no need to call makeOverlayCurrent() because this has
+    already been done when this function is called.
+*/
+
+void QGLWidget::paintOverlayGL()
+{
+}
+
+
+/*!
+    \fn void QGLWidget::resizeOverlayGL(int width , int height)
+
+    This virtual function is used in the same manner as paintGL()
+    except that it operates on the widget's overlay context instead of
+    the widget's main context. This means that resizeOverlayGL() is
+    called whenever the widget has been resized. The new size is
+    passed in \a width and \a height. Reimplement it in a subclass.
+
+    There is no need to call makeOverlayCurrent() because this has
+    already been done when this function is called.
+*/
+
+void QGLWidget::resizeOverlayGL(int, int)
+{
+}
+
+/*! \fn bool QGLWidget::event(QEvent *e)
+  \reimp
+*/
+#if !defined(Q_OS_WINCE) && !defined(Q_WS_QWS) && !defined(Q_WS_QPA)
+bool QGLWidget::event(QEvent *e)
+{
+    Q_D(QGLWidget);
+
+    if (e->type() == QEvent::Paint) {
+        QPoint offset;
+        QPaintDevice *redirectedDevice = d->redirected(&offset);
+        if (redirectedDevice && redirectedDevice->devType() == QInternal::Pixmap) {
+            d->restoreRedirected();
+            QPixmap pixmap = renderPixmap();
+            d->setRedirected(redirectedDevice, offset);
+            QPainter p(redirectedDevice);
+            p.drawPixmap(-offset, pixmap);
+            return true;
+        }
+    }
+
+#if defined(Q_WS_X11)
+    if (e->type() == QEvent::ParentChange) {
+        // if we've reparented a window that has the current context
+        // bound, we need to rebind that context to the new window id
+        if (d->glcx == QGLContext::currentContext())
+            makeCurrent();
+
+        if (d->glcx->d_func()->screen != d->xinfo.screen() || testAttribute(Qt::WA_TranslucentBackground)) {
+            setContext(new QGLContext(d->glcx->requestedFormat(), this));
+            // ### recreating the overlay isn't supported atm
+        }
+    }
+
+#ifndef QT_NO_EGL
+    // A re-parent is likely to destroy the X11 window and re-create it. It is important
+    // that we free the EGL surface _before_ the winID changes - otherwise we can leak.
+    if (e->type() == QEvent::ParentAboutToChange)
+        d->glcx->d_func()->destroyEglSurfaceForDevice();
+
+    if ((e->type() == QEvent::ParentChange) || (e->type() == QEvent::WindowStateChange)) {
+        // The window may have been re-created during re-parent or state change - if so, the EGL
+        // surface will need to be re-created.
+        d->recreateEglSurface();
+    }
+#endif
+#elif defined(Q_WS_WIN)
+    if (e->type() == QEvent::ParentChange) {
+        QGLContext *newContext = new QGLContext(d->glcx->requestedFormat(), this);
+        setContext(newContext, d->glcx);
+
+        // the overlay needs to be recreated as well
+        delete d->olcx;
+        if (isValid() && context()->format().hasOverlay()) {
+            d->olcx = new QGLContext(QGLFormat::defaultOverlayFormat(), this);
+            if (!d->olcx->create(isSharing() ? d->glcx : 0)) {
+                delete d->olcx;
+                d->olcx = 0;
+                d->glcx->d_func()->glFormat.setOverlay(false);
+            }
+        } else {
+            d->olcx = 0;
+        }
+    } else if (e->type() == QEvent::Show) {
+        if (!format().rgba())
+            d->updateColormap();
+    }
+#elif defined(Q_WS_MAC)
+    if (e->type() == QEvent::MacGLWindowChange
+#if 0 //(MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5)
+        && ((QSysInfo::MacintoshVersion >= QSysInfo::MV_10_5 && isWindow())
+            || QSysInfo::MacintoshVersion <= QSysInfo::MV_10_4)
+#endif
+        ) {
+        if (d->needWindowChange) {
+            d->needWindowChange = false;
+            d->glcx->updatePaintDevice();
+            update();
+        }
+        return true;
+#  if defined(QT_MAC_USE_COCOA)
+    } else if (e->type() == QEvent::MacGLClearDrawable) {
+        d->glcx->d_ptr->clearDrawable();
+#  endif
+    }
+#elif defined(Q_OS_SYMBIAN)
+    // prevents errors on some systems, where we get a flush to a
+    // hidden widget
+    if (e->type() == QEvent::Hide) {
+        makeCurrent();
+        glFinish();
+        doneCurrent();
+    } else if (e->type() == QEvent::ParentChange) {
+        // if we've reparented a window that has the current context
+        // bound, we need to rebind that context to the new window id
+        if (d->glcx == QGLContext::currentContext())
+            makeCurrent();
+
+        if (testAttribute(Qt::WA_TranslucentBackground))
+            setContext(new QGLContext(d->glcx->requestedFormat(), this));
+    }
+
+    // A re-parent is likely to destroy the Symbian window and re-create it. It is important
+    // that we free the EGL surface _before_ the winID changes - otherwise we can leak.
+    if (e->type() == QEvent::ParentAboutToChange)
+        d->glcx->d_func()->destroyEglSurfaceForDevice();
+
+    if ((e->type() == QEvent::ParentChange) || (e->type() == QEvent::WindowStateChange)) {
+        // The window may have been re-created during re-parent or state change - if so, the EGL
+        // surface will need to be re-created.
+        d->recreateEglSurface();
+    }
+
+#endif
+
+    return QWidget::event(e);
+}
+#endif
+
+/*!
+    \fn void QGLWidget::paintEvent(QPaintEvent *event)
+
+    Handles paint events passed in the \a event parameter. Will cause
+    the virtual paintGL() function to be called.
+
+    The widget's rendering context will become the current context and
+    initializeGL() will be called if it hasn't already been called.
+*/
+
+void QGLWidget::paintEvent(QPaintEvent *)
+{
+    if (updatesEnabled()) {
+        glDraw();
+        updateOverlayGL();
+    }
+}
+
+
+/*!
+    \fn void QGLWidget::resizeEvent(QResizeEvent *event)
+
+    Handles resize events that are passed in the \a event parameter.
+    Calls the virtual function resizeGL().
+*/
+
+
+/*!
+    \fn void QGLWidget::setMouseTracking(bool enable)
+
+    If \a enable is true then mouse tracking is enabled; otherwise it
+    is disabled.
+*/
+
+
+/*!
+    Renders the current scene on a pixmap and returns the pixmap.
+
+    You can use this method on both visible and invisible QGLWidget objects.
+
+    This method will create a pixmap and a temporary QGLContext to
+    render on the pixmap. It will then call initializeGL(),
+    resizeGL(), and paintGL() on this context. Finally, the widget's
+    original GL context is restored.
+
+    The size of the pixmap will be \a w pixels wide and \a h pixels
+    high unless one of these parameters is 0 (the default), in which
+    case the pixmap will have the same size as the widget.
+
+    If \a useContext is true, this method will try to be more
+    efficient by using the existing GL context to render the pixmap.
+    The default is false. Only use true if you understand the risks.
+    Note that under Windows a temporary context has to be created
+    and usage of the \e useContext parameter is not supported.
+
+    Overlays are not rendered onto the pixmap.
+
+    If the GL rendering context and the desktop have different bit
+    depths, the result will most likely look surprising.
+
+    Note that the creation of display lists, modifications of the view
+    frustum etc. should be done from within initializeGL(). If this is
+    not done, the temporary QGLContext will not be initialized
+    properly, and the rendered pixmap may be incomplete/corrupted.
+*/
+
+QPixmap QGLWidget::renderPixmap(int w, int h, bool useContext)
+{
+    Q_D(QGLWidget);
+    QSize sz = size();
+    if ((w > 0) && (h > 0))
+        sz = QSize(w, h);
+
+#if defined(Q_WS_X11)
+    extern int qt_x11_preferred_pixmap_depth;
+    int old_depth = qt_x11_preferred_pixmap_depth;
+    qt_x11_preferred_pixmap_depth = x11Info().depth();
+
+    QPixmapData *data = new QX11PixmapData(QPixmapData::PixmapType);
+    data->resize(sz.width(), sz.height());
+    QPixmap pm(data);
+    qt_x11_preferred_pixmap_depth = old_depth;
+    QX11Info xinfo = x11Info();
+
+    // make sure we use a pixmap with the same depth/visual as the widget
+    if (xinfo.visual() != QX11Info::appVisual()) {
+        QX11InfoData* xd = pm.x11Info().getX11Data(true);
+        xd->depth = xinfo.depth();
+        xd->visual = static_cast<Visual *>(xinfo.visual());
+        const_cast<QX11Info &>(pm.x11Info()).setX11Data(xd);
+    }
+
+#else
+    QPixmap pm(sz);
+#endif
+
+    d->glcx->doneCurrent();
+
+    bool success = true;
+
+    if (useContext && isValid() && d->renderCxPm(&pm))
+        return pm;
+
+    QGLFormat fmt = d->glcx->requestedFormat();
+    fmt.setDirectRendering(false);                // Direct is unlikely to work
+    fmt.setDoubleBuffer(false);                // We don't need dbl buf
+#ifdef Q_WS_MAC // crash prevention on the Mac - it's unlikely to work anyway
+    fmt.setSampleBuffers(false);
+#endif
+
+    QGLContext* ocx = d->glcx;
+    ocx->doneCurrent();
+    d->glcx = new QGLContext(fmt, &pm);
+    d->glcx->create();
+
+    if (d->glcx->isValid())
+        updateGL();
+    else
+        success = false;
+
+    delete d->glcx;
+    d->glcx = ocx;
+
+    ocx->makeCurrent();
+
+    if (success) {
+#if defined(Q_WS_X11)
+        if (xinfo.visual() != QX11Info::appVisual()) {
+            QImage image = pm.toImage();
+            QPixmap p = QPixmap::fromImage(image);
+            return p;
+        }
+#endif
+        return pm;
+    }
+    return QPixmap();
+}
+
+/*!
+    Returns an image of the frame buffer. If \a withAlpha is true the
+    alpha channel is included.
+
+    Depending on your hardware, you can explicitly select which color
+    buffer to grab with a glReadBuffer() call before calling this
+    function.
+*/
+QImage QGLWidget::grabFrameBuffer(bool withAlpha)
+{
+    makeCurrent();
+    QImage res;
+    int w = width();
+    int h = height();
+    if (format().rgba()) {
+        res = qt_gl_read_framebuffer(QSize(w, h), format().alpha(), withAlpha);
+    } else {
+#if defined (Q_WS_WIN) && !defined(QT_OPENGL_ES)
+        res = QImage(w, h, QImage::Format_Indexed8);
+        glReadPixels(0, 0, w, h, GL_COLOR_INDEX, GL_UNSIGNED_BYTE, res.bits());
+        const QVector<QColor> pal = QColormap::instance().colormap();
+        if (pal.size()) {
+            res.setColorCount(pal.size());
+            for (int i = 0; i < pal.size(); i++)
+                res.setColor(i, pal.at(i).rgb());
+        }
+        res = res.mirrored();
+#endif
+    }
+
+    return res;
+}
+
+
+
+/*!
+    Initializes OpenGL for this widget's context. Calls the virtual
+    function initializeGL().
+*/
+
+void QGLWidget::glInit()
+{
+    Q_D(QGLWidget);
+    if (!isValid())
+        return;
+    makeCurrent();
+    initializeGL();
+    d->glcx->setInitialized(true);
+}
+
+
+/*!
+    Executes the virtual function paintGL().
+
+    The widget's rendering context will become the current context and
+    initializeGL() will be called if it hasn't already been called.
+*/
+
+void QGLWidget::glDraw()
+{
+    Q_D(QGLWidget);
+    if (!isValid())
+        return;
+#ifdef Q_OS_SYMBIAN
+    // Crashes on Symbian if trying to render to invisible surfaces
+    if (!isVisible() && d->glcx->device()->devType() == QInternal::Widget)
+        return;
+#endif
+    makeCurrent();
+#ifndef QT_OPENGL_ES
+    if (d->glcx->deviceIsPixmap())
+        glDrawBuffer(GL_FRONT);
+#endif
+    if (!d->glcx->initialized()) {
+        glInit();
+        resizeGL(d->glcx->device()->width(), d->glcx->device()->height()); // New context needs this "resize"
+    }
+    paintGL();
+    if (doubleBuffer()) {
+        if (d->autoSwap)
+            swapBuffers();
+    } else {
+        glFlush();
+    }
+}
+
+/*!
+    Convenience function for specifying a drawing color to OpenGL.
+    Calls glColor4 (in RGBA mode) or glIndex (in color-index mode)
+    with the color \a c. Applies to this widgets GL context.
+
+    \note This function is not supported on OpenGL/ES 2.0 systems.
+
+    \sa qglClearColor(), QGLContext::currentContext(), QColor
+*/
+
+void QGLWidget::qglColor(const QColor& c) const
+{
+#if !defined(QT_OPENGL_ES_2)
+#ifdef QT_OPENGL_ES
+    glColor4f(c.redF(), c.greenF(), c.blueF(), c.alphaF());
+#else
+    Q_D(const QGLWidget);
+    const QGLContext *ctx = QGLContext::currentContext();
+    if (ctx) {
+        if (ctx->format().rgba())
+            glColor4f(c.redF(), c.greenF(), c.blueF(), c.alphaF());
+        else if (!d->cmap.isEmpty()) { // QGLColormap in use?
+            int i = d->cmap.find(c.rgb());
+            if (i < 0)
+                i = d->cmap.findNearest(c.rgb());
+            glIndexi(i);
+        } else
+            glIndexi(ctx->colorIndex(c));
+    }
+#endif //QT_OPENGL_ES
+#else
+    Q_UNUSED(c);
+#endif //QT_OPENGL_ES_2
+}
+
+/*!
+    Convenience function for specifying the clearing color to OpenGL.
+    Calls glClearColor (in RGBA mode) or glClearIndex (in color-index
+    mode) with the color \a c. Applies to this widgets GL context.
+
+    \sa qglColor(), QGLContext::currentContext(), QColor
+*/
+
+void QGLWidget::qglClearColor(const QColor& c) const
+{
+#ifdef QT_OPENGL_ES
+    glClearColor(c.redF(), c.greenF(), c.blueF(), c.alphaF());
+#else
+    Q_D(const QGLWidget);
+    const QGLContext *ctx = QGLContext::currentContext();
+    if (ctx) {
+        if (ctx->format().rgba())
+            glClearColor(c.redF(), c.greenF(), c.blueF(), c.alphaF());
+        else if (!d->cmap.isEmpty()) { // QGLColormap in use?
+            int i = d->cmap.find(c.rgb());
+            if (i < 0)
+                i = d->cmap.findNearest(c.rgb());
+            glClearIndex(i);
+        } else
+            glClearIndex(ctx->colorIndex(c));
+    }
+#endif
+}
+
+
+/*!
+    Converts the image \a img into the unnamed format expected by
+    OpenGL functions such as glTexImage2D(). The returned image is not
+    usable as a QImage, but QImage::width(), QImage::height() and
+    QImage::bits() may be used with OpenGL. The GL format used is
+    \c GL_RGBA.
+
+    \omit ###
+
+    \l opengl/texture example
+    The following few lines are from the texture example. Most of the
+    code is irrelevant, so we just quote the relevant bits:
+
+    \quotefromfile opengl/texture/gltexobj.cpp
+    \skipto tex1
+    \printline tex1
+    \printline gllogo.bmp
+
+    We create \e tex1 (and another variable) for OpenGL, and load a real
+    image into \e buf.
+
+    \skipto convertToGLFormat
+    \printline convertToGLFormat
+
+    A few lines later, we convert \e buf into OpenGL format and store it
+    in \e tex1.
+
+    \skipto glTexImage2D
+    \printline glTexImage2D
+    \printline tex1.bits
+
+    Note the dimension restrictions for texture images as described in
+    the glTexImage2D() documentation. The width must be 2^m + 2*border
+    and the height 2^n + 2*border where m and n are integers and
+    border is either 0 or 1.
+
+    Another function in the same example uses \e tex1 with OpenGL.
+
+    \endomit
+*/
+
+QImage QGLWidget::convertToGLFormat(const QImage& img)
+{
+    QImage res(img.size(), QImage::Format_ARGB32);
+    convertToGLFormatHelper(res, img.convertToFormat(QImage::Format_ARGB32), GL_RGBA);
+    return res;
+}
+
+
+/*!
+    \fn QGLColormap & QGLWidget::colormap() const
+
+    Returns the colormap for this widget.
+
+    Usually it is only top-level widgets that can have different
+    colormaps installed. Asking for the colormap of a child widget
+    will return the colormap for the child's top-level widget.
+
+    If no colormap has been set for this widget, the QGLColormap
+    returned will be empty.
+
+    \sa setColormap(), QGLColormap::isEmpty()
+*/
+
+/*!
+    \fn void QGLWidget::setColormap(const QGLColormap & cmap)
+
+    Set the colormap for this widget to \a cmap. Usually it is only
+    top-level widgets that can have colormaps installed.
+
+    \sa colormap()
+*/
+
+
+/*!
+    \obsolete
+
+    Returns the value of the first display list that is generated for
+    the characters in the given \a font. \a listBase indicates the base
+    value used when generating the display lists for the font. The
+    default value is 2000.
+
+    \note This function is not supported on OpenGL/ES systems.
+*/
+int QGLWidget::fontDisplayListBase(const QFont & font, int listBase)
+{
+#ifndef QT_OPENGL_ES
+    Q_D(QGLWidget);
+    int base;
+
+    if (!d->glcx) { // this can't happen unless we run out of mem
+        return 0;
+    }
+
+    // always regenerate font disp. lists for pixmaps - hw accelerated
+    // contexts can't handle this otherwise
+    bool regenerate = d->glcx->deviceIsPixmap();
+#ifndef QT_NO_FONTCONFIG
+    // font color needs to be part of the font cache key when using
+    // antialiased fonts since one set of glyphs needs to be generated
+    // for each font color
+    QString color_key;
+    if (font.styleStrategy() != QFont::NoAntialias) {
+        GLfloat color[4];
+        glGetFloatv(GL_CURRENT_COLOR, color);
+        color_key.sprintf("%f_%f_%f",color[0], color[1], color[2]);
+    }
+    QString key = font.key() + color_key + QString::number((int) regenerate);
+#else
+    QString key = font.key() + QString::number((int) regenerate);
+#endif
+    if (!regenerate && (d->displayListCache.find(key) != d->displayListCache.end())) {
+        base = d->displayListCache[key];
+    } else {
+        int maxBase = listBase - 256;
+        QMap<QString,int>::ConstIterator it;
+        for (it = d->displayListCache.constBegin(); it != d->displayListCache.constEnd(); ++it) {
+            if (maxBase < it.value()) {
+                maxBase = it.value();
+            }
+        }
+        maxBase += 256;
+        d->glcx->generateFontDisplayLists(font, maxBase);
+        d->displayListCache[key] = maxBase;
+        base = maxBase;
+    }
+    return base;
+#else // QT_OPENGL_ES
+    Q_UNUSED(font);
+    Q_UNUSED(listBase);
+    return 0;
+#endif
+}
+
+#ifndef QT_OPENGL_ES
+
+static void qt_save_gl_state()
+{
+    glPushClientAttrib(GL_CLIENT_ALL_ATTRIB_BITS);
+    glPushAttrib(GL_ALL_ATTRIB_BITS);
+    glMatrixMode(GL_TEXTURE);
+    glPushMatrix();
+    glLoadIdentity();
+    glMatrixMode(GL_PROJECTION);
+    glPushMatrix();
+    glMatrixMode(GL_MODELVIEW);
+    glPushMatrix();
+
+    glShadeModel(GL_FLAT);
+    glDisable(GL_CULL_FACE);
+    glDisable(GL_LIGHTING);
+    glDisable(GL_STENCIL_TEST);
+    glDisable(GL_DEPTH_TEST);
+    glEnable(GL_BLEND);
+    glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
+}
+
+static void qt_restore_gl_state()
+{
+    glMatrixMode(GL_TEXTURE);
+    glPopMatrix();
+    glMatrixMode(GL_PROJECTION);
+    glPopMatrix();
+    glMatrixMode(GL_MODELVIEW);
+    glPopMatrix();
+    glPopAttrib();
+    glPopClientAttrib();
+}
+
+static void qt_gl_draw_text(QPainter *p, int x, int y, const QString &str,
+                            const QFont &font)
+{
+    GLfloat color[4];
+    glGetFloatv(GL_CURRENT_COLOR, &color[0]);
+
+    QColor col;
+    col.setRgbF(color[0], color[1], color[2],color[3]);
+    QPen old_pen = p->pen();
+    QFont old_font = p->font();
+
+    p->setPen(col);
+    p->setFont(font);
+    p->drawText(x, y, str);
+
+    p->setPen(old_pen);
+    p->setFont(old_font);
+}
+
+#endif // !QT_OPENGL_ES
+
+/*!
+   Renders the string \a str into the GL context of this widget.
+
+   \a x and \a y are specified in window coordinates, with the origin
+   in the upper left-hand corner of the window. If \a font is not
+   specified, the currently set application font will be used to
+   render the string. To change the color of the rendered text you can
+   use the glColor() call (or the qglColor() convenience function),
+   just before the renderText() call.
+
+   The \a listBase parameter is obsolete and will be removed in a
+   future version of Qt.
+
+   \note This function clears the stencil buffer.
+
+   \note This function is not supported on OpenGL/ES systems.
+
+   \note This function temporarily disables depth-testing when the
+   text is drawn.
+
+   \note This function can only be used inside a
+   QPainter::beginNativePainting()/QPainter::endNativePainting() block
+   if the default OpenGL paint engine is QPaintEngine::OpenGL. To make
+   QPaintEngine::OpenGL the default GL engine, call
+   QGL::setPreferredPaintEngine(QPaintEngine::OpenGL) before the
+   QApplication constructor.
+
+   \l{Overpainting Example}{Overpaint} with QPainter::drawText() instead.
+*/
+
+void QGLWidget::renderText(int x, int y, const QString &str, const QFont &font, int)
+{
+#ifndef QT_OPENGL_ES
+    Q_D(QGLWidget);
+    if (str.isEmpty() || !isValid())
+        return;
+
+    GLint view[4];
+    bool use_scissor_testing = glIsEnabled(GL_SCISSOR_TEST);
+    if (!use_scissor_testing)
+        glGetIntegerv(GL_VIEWPORT, &view[0]);
+    int width = d->glcx->device()->width();
+    int height = d->glcx->device()->height();
+    bool auto_swap = autoBufferSwap();
+
+    QPaintEngine::Type oldEngineType = qgl_engine_selector()->preferredPaintEngine();
+
+    QPaintEngine *engine = paintEngine();
+    if (engine && (oldEngineType == QPaintEngine::OpenGL2) && engine->isActive()) {
+        qWarning("QGLWidget::renderText(): Calling renderText() while a GL 2 paint engine is"
+                 " active on the same device is not allowed.");
+        return;
+    }
+
+    // this changes what paintEngine() returns
+    qgl_engine_selector()->setPreferredPaintEngine(QPaintEngine::OpenGL);
+    engine = paintEngine();
+    QPainter *p;
+    bool reuse_painter = false;
+    if (engine->isActive()) {
+        reuse_painter = true;
+        p = engine->painter();
+        qt_save_gl_state();
+
+        glDisable(GL_DEPTH_TEST);
+        glViewport(0, 0, width, height);
+        glMatrixMode(GL_PROJECTION);
+        glLoadIdentity();
+        glOrtho(0, width, height, 0, 0, 1);
+        glMatrixMode(GL_MODELVIEW);
+
+        glLoadIdentity();
+    } else {
+        setAutoBufferSwap(false);
+        // disable glClear() as a result of QPainter::begin()
+        d->disable_clear_on_painter_begin = true;
+        p = new QPainter(this);
+    }
+
+    QRect viewport(view[0], view[1], view[2], view[3]);
+    if (!use_scissor_testing && viewport != rect()) {
+        // if the user hasn't set a scissor box, we set one that
+        // covers the current viewport
+        glScissor(view[0], view[1], view[2], view[3]);
+        glEnable(GL_SCISSOR_TEST);
+    } else if (use_scissor_testing) {
+        // use the scissor box set by the user
+        glEnable(GL_SCISSOR_TEST);
+    }
+
+    qt_gl_draw_text(p, x, y, str, font);
+
+    if (reuse_painter) {
+        qt_restore_gl_state();
+    } else {
+        p->end();
+        delete p;
+        setAutoBufferSwap(auto_swap);
+        d->disable_clear_on_painter_begin = false;
+    }
+    qgl_engine_selector()->setPreferredPaintEngine(oldEngineType);
+#else // QT_OPENGL_ES
+    Q_UNUSED(x);
+    Q_UNUSED(y);
+    Q_UNUSED(str);
+    Q_UNUSED(font);
+    qWarning("QGLWidget::renderText is not supported under OpenGL/ES");
+#endif
+}
+
+/*! \overload
+
+    \a x, \a y and \a z are specified in scene or object coordinates
+    relative to the currently set projection and model matrices. This
+    can be useful if you want to annotate models with text labels and
+    have the labels move with the model as it is rotated etc.
+
+    \note This function is not supported on OpenGL/ES systems.
+
+    \note If depth testing is enabled before this function is called,
+    then the drawn text will be depth-tested against the models that
+    have already been drawn in the scene.  Use \c{glDisable(GL_DEPTH_TEST)}
+    before calling this function to annotate the models without
+    depth-testing the text.
+
+    \l{Overpainting Example}{Overpaint} with QPainter::drawText() instead.
+*/
+void QGLWidget::renderText(double x, double y, double z, const QString &str, const QFont &font, int)
+{
+#ifndef QT_OPENGL_ES
+    Q_D(QGLWidget);
+    if (str.isEmpty() || !isValid())
+        return;
+
+    bool auto_swap = autoBufferSwap();
+
+    int width = d->glcx->device()->width();
+    int height = d->glcx->device()->height();
+    GLdouble model[4][4], proj[4][4];
+    GLint view[4];
+    glGetDoublev(GL_MODELVIEW_MATRIX, &model[0][0]);
+    glGetDoublev(GL_PROJECTION_MATRIX, &proj[0][0]);
+    glGetIntegerv(GL_VIEWPORT, &view[0]);
+    GLdouble win_x = 0, win_y = 0, win_z = 0;
+    qgluProject(x, y, z, &model[0][0], &proj[0][0], &view[0],
+                &win_x, &win_y, &win_z);
+    win_y = height - win_y; // y is inverted
+
+    QPaintEngine::Type oldEngineType = qgl_engine_selector()->preferredPaintEngine();
+    QPaintEngine *engine = paintEngine();
+
+    if (engine && (oldEngineType == QPaintEngine::OpenGL2) && engine->isActive()) {
+        qWarning("QGLWidget::renderText(): Calling renderText() while a GL 2 paint engine is"
+                 " active on the same device is not allowed.");
+        return;
+    }
+
+    // this changes what paintEngine() returns
+    qgl_engine_selector()->setPreferredPaintEngine(QPaintEngine::OpenGL);
+    engine = paintEngine();
+    QPainter *p;
+    bool reuse_painter = false;
+    bool use_depth_testing = glIsEnabled(GL_DEPTH_TEST);
+    bool use_scissor_testing = glIsEnabled(GL_SCISSOR_TEST);
+
+    if (engine->isActive()) {
+        reuse_painter = true;
+        p = engine->painter();
+        qt_save_gl_state();
+    } else {
+        setAutoBufferSwap(false);
+        // disable glClear() as a result of QPainter::begin()
+        d->disable_clear_on_painter_begin = true;
+        p = new QPainter(this);
+    }
+
+    QRect viewport(view[0], view[1], view[2], view[3]);
+    if (!use_scissor_testing && viewport != rect()) {
+        glScissor(view[0], view[1], view[2], view[3]);
+        glEnable(GL_SCISSOR_TEST);
+    } else if (use_scissor_testing) {
+        glEnable(GL_SCISSOR_TEST);
+    }
+    glMatrixMode(GL_PROJECTION);
+    glLoadIdentity();
+    glViewport(0, 0, width, height);
+    glOrtho(0, width, height, 0, 0, 1);
+    glMatrixMode(GL_MODELVIEW);
+    glLoadIdentity();
+    glAlphaFunc(GL_GREATER, 0.0);
+    glEnable(GL_ALPHA_TEST);
+    if (use_depth_testing)
+        glEnable(GL_DEPTH_TEST);
+    glTranslated(0, 0, -win_z);
+    qt_gl_draw_text(p, qRound(win_x), qRound(win_y), str, font);
+
+    if (reuse_painter) {
+        qt_restore_gl_state();
+    } else {
+        p->end();
+        delete p;
+        setAutoBufferSwap(auto_swap);
+        d->disable_clear_on_painter_begin = false;
+    }
+    qgl_engine_selector()->setPreferredPaintEngine(oldEngineType);
+#else // QT_OPENGL_ES
+    Q_UNUSED(x);
+    Q_UNUSED(y);
+    Q_UNUSED(z);
+    Q_UNUSED(str);
+    Q_UNUSED(font);
+    qWarning("QGLWidget::renderText is not supported under OpenGL/ES");
+#endif
+}
+
+QGLFormat QGLWidget::format() const
+{
+    Q_D(const QGLWidget);
+    return d->glcx->format();
+}
+
+const QGLContext *QGLWidget::context() const
+{
+    Q_D(const QGLWidget);
+    return d->glcx;
+}
+
+bool QGLWidget::doubleBuffer() const
+{
+    Q_D(const QGLWidget);
+    return d->glcx->d_ptr->glFormat.testOption(QGL::DoubleBuffer);
+}
+
+void QGLWidget::setAutoBufferSwap(bool on)
+{
+    Q_D(QGLWidget);
+    d->autoSwap = on;
+}
+
+bool QGLWidget::autoBufferSwap() const
+{
+    Q_D(const QGLWidget);
+    return d->autoSwap;
+}
+
+/*!
+    Calls QGLContext:::bindTexture(\a image, \a target, \a format) on the currently
+    set context.
+
+    \sa deleteTexture()
+*/
+GLuint QGLWidget::bindTexture(const QImage &image, GLenum target, GLint format)
+{
+    if (image.isNull())
+        return 0;
+
+    Q_D(QGLWidget);
+    return d->glcx->bindTexture(image, target, format, QGLContext::DefaultBindOption);
+}
+
+/*!
+  \overload
+  \since 4.6
+
+  The binding \a options are a set of options used to decide how to
+  bind the texture to the context.
+ */
+GLuint QGLWidget::bindTexture(const QImage &image, GLenum target, GLint format, QGLContext::BindOptions options)
+{
+    if (image.isNull())
+        return 0;
+
+    Q_D(QGLWidget);
+    return d->glcx->bindTexture(image, target, format, options);
+}
+
+
+#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
+/*! \internal */
+GLuint QGLWidget::bindTexture(const QImage &image, QMacCompatGLenum target, QMacCompatGLint format)
+{
+    if (image.isNull())
+        return 0;
+
+   Q_D(QGLWidget);
+   return d->glcx->bindTexture(image, GLenum(target), GLint(format), QGLContext::DefaultBindOption);
+}
+
+GLuint QGLWidget::bindTexture(const QImage &image, QMacCompatGLenum target, QMacCompatGLint format,
+                              QGLContext::BindOptions options)
+{
+    if (image.isNull())
+        return 0;
+
+   Q_D(QGLWidget);
+   return d->glcx->bindTexture(image, GLenum(target), GLint(format), options);
+}
+#endif
+
+/*!
+    Calls QGLContext:::bindTexture(\a pixmap, \a target, \a format) on the currently
+    set context.
+
+    \sa deleteTexture()
+*/
+GLuint QGLWidget::bindTexture(const QPixmap &pixmap, GLenum target, GLint format)
+{
+    if (pixmap.isNull())
+        return 0;
+
+    Q_D(QGLWidget);
+    return d->glcx->bindTexture(pixmap, target, format, QGLContext::DefaultBindOption);
+}
+
+/*!
+  \overload
+  \since 4.6
+
+  Generates and binds a 2D GL texture to the current context, based
+  on \a pixmap. The generated texture id is returned and can be used in
+
+  The binding \a options are a set of options used to decide how to
+  bind the texture to the context.
+ */
+GLuint QGLWidget::bindTexture(const QPixmap &pixmap, GLenum target, GLint format,
+                              QGLContext::BindOptions options)
+{
+    Q_D(QGLWidget);
+    return d->glcx->bindTexture(pixmap, target, format, options);
+}
+
+#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
+/*! \internal */
+GLuint QGLWidget::bindTexture(const QPixmap &pixmap, QMacCompatGLenum target, QMacCompatGLint format)
+{
+    Q_D(QGLWidget);
+    return d->glcx->bindTexture(pixmap, target, format, QGLContext::DefaultBindOption);
+}
+
+GLuint QGLWidget::bindTexture(const QPixmap &pixmap, QMacCompatGLenum target, QMacCompatGLint format,
+                              QGLContext::BindOptions options)
+{
+    Q_D(QGLWidget);
+    return d->glcx->bindTexture(pixmap, target, format, options);
+}
+#endif
+
+
+/*! \overload
+
+    Calls QGLContext::bindTexture(\a fileName) on the currently set context.
+
+    \sa deleteTexture()
+*/
+GLuint QGLWidget::bindTexture(const QString &fileName)
+{
+    Q_D(QGLWidget);
+    return d->glcx->bindTexture(fileName);
+}
+
+/*!
+    Calls QGLContext::deleteTexture(\a id) on the currently set
+    context.
+
+    \sa bindTexture()
+*/
+void QGLWidget::deleteTexture(GLuint id)
+{
+    Q_D(QGLWidget);
+    d->glcx->deleteTexture(id);
+}
+
+#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
+/*! \internal */
+void QGLWidget::deleteTexture(QMacCompatGLuint id)
+{
+    Q_D(QGLWidget);
+    d->glcx->deleteTexture(GLuint(id));
+}
+#endif
+
+/*!
+    \since 4.4
+
+    Calls the corresponding QGLContext::drawTexture() with
+    \a target, \a textureId, and \a textureTarget for this
+    widget's context.
+*/
+void QGLWidget::drawTexture(const QRectF &target, GLuint textureId, GLenum textureTarget)
+{
+    Q_D(QGLWidget);
+    d->glcx->drawTexture(target, textureId, textureTarget);
+}
+
+#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
+/*! \internal */
+void QGLWidget::drawTexture(const QRectF &target, QMacCompatGLuint textureId, QMacCompatGLenum textureTarget)
+{
+    Q_D(QGLWidget);
+    d->glcx->drawTexture(target, GLint(textureId), GLenum(textureTarget));
+}
+#endif
+
+/*!
+    \since 4.4
+
+    Calls the corresponding QGLContext::drawTexture() with
+    \a point, \a textureId, and \a textureTarget for this
+    widget's context.
+*/
+void QGLWidget::drawTexture(const QPointF &point, GLuint textureId, GLenum textureTarget)
+{
+    Q_D(QGLWidget);
+    d->glcx->drawTexture(point, textureId, textureTarget);
+}
+
+#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
+/*! \internal */
+void QGLWidget::drawTexture(const QPointF &point, QMacCompatGLuint textureId, QMacCompatGLenum textureTarget)
+{
+    Q_D(QGLWidget);
+    d->glcx->drawTexture(point, GLuint(textureId), GLenum(textureTarget));
+}
+#endif
+
+#ifndef QT_OPENGL_ES_1
+Q_GLOBAL_STATIC(QGLEngineThreadStorage<QGL2PaintEngineEx>, qt_gl_2_engine)
+#endif
+
+#ifndef QT_OPENGL_ES_2
+Q_GLOBAL_STATIC(QGLEngineThreadStorage<QOpenGLPaintEngine>, qt_gl_engine)
+#endif
+
+Q_OPENGL_EXPORT QPaintEngine* qt_qgl_paint_engine()
+{
+#if defined(QT_OPENGL_ES_1)
+    return qt_gl_engine()->engine();
+#elif defined(QT_OPENGL_ES_2)
+    return qt_gl_2_engine()->engine();
+#else
+    if (qt_gl_preferGL2Engine())
+        return qt_gl_2_engine()->engine();
+    else
+        return qt_gl_engine()->engine();
+#endif
+}
+
+/*!
+    \internal
+
+    Returns the GL widget's paint engine. This is normally a
+    QOpenGLPaintEngine.
+*/
+QPaintEngine *QGLWidget::paintEngine() const
+{
+    return qt_qgl_paint_engine();
+}
+
+#ifdef QT3_SUPPORT
+/*!
+    \overload
+    \obsolete
+ */
+QGLWidget::QGLWidget(QWidget *parent, const char *name,
+                      const QGLWidget* shareWidget, Qt::WindowFlags f)
+    : QWidget(*(new QGLWidgetPrivate), parent, f | Qt::MSWindowsOwnDC)
+{
+    Q_D(QGLWidget);
+    if (name)
+        setObjectName(QString::fromAscii(name));
+    setAttribute(Qt::WA_PaintOnScreen);
+    setAttribute(Qt::WA_NoSystemBackground);
+    setAutoFillBackground(true); // for compatibility
+    d->init(new QGLContext(QGLFormat::defaultFormat(), this), shareWidget);
+}
+
+/*!
+    \overload
+    \obsolete
+ */
+QGLWidget::QGLWidget(const QGLFormat &format, QWidget *parent,
+                      const char *name, const QGLWidget* shareWidget,
+                      Qt::WindowFlags f)
+    : QWidget(*(new QGLWidgetPrivate), parent, f | Qt::MSWindowsOwnDC)
+{
+    Q_D(QGLWidget);
+    if (name)
+        setObjectName(QString::fromAscii(name));
+    setAttribute(Qt::WA_PaintOnScreen);
+    setAttribute(Qt::WA_NoSystemBackground);
+    setAutoFillBackground(true); // for compatibility
+    d->init(new QGLContext(format, this), shareWidget);
+}
+
+/*!
+    \overload
+    \obsolete
+ */
+QGLWidget::QGLWidget(QGLContext *context, QWidget *parent,
+                      const char *name, const QGLWidget *shareWidget, Qt::WindowFlags f)
+    : QWidget(*(new QGLWidgetPrivate), parent, f | Qt::MSWindowsOwnDC)
+{
+    Q_D(QGLWidget);
+    if (name)
+        setObjectName(QString::fromAscii(name));
+    setAttribute(Qt::WA_PaintOnScreen);
+    setAttribute(Qt::WA_NoSystemBackground);
+    setAutoFillBackground(true); // for compatibility
+    d->init(context, shareWidget);
+}
+
+#endif // QT3_SUPPORT
+
+typedef GLubyte * (*qt_glGetStringi)(GLenum, GLuint);
+
+#ifndef GL_NUM_EXTENSIONS
+#define GL_NUM_EXTENSIONS 0x821D
+#endif
+
+QGLExtensionMatcher::QGLExtensionMatcher(const char *str)
+{
+    init(str);
+}
+
+QGLExtensionMatcher::QGLExtensionMatcher()
+{
+    const char *extensionStr = reinterpret_cast<const char *>(glGetString(GL_EXTENSIONS));
+
+    if (extensionStr) {
+        init(extensionStr);
+    } else {
+        // clear error state
+        while (glGetError()) {}
+
+        const QGLContext *ctx = QGLContext::currentContext();
+        if (ctx) {
+            qt_glGetStringi glGetStringi = (qt_glGetStringi)ctx->getProcAddress(QLatin1String("glGetStringi"));
+
+            GLint numExtensions;
+            glGetIntegerv(GL_NUM_EXTENSIONS, &numExtensions);
+
+            for (int i = 0; i < numExtensions; ++i) {
+                const char *str = reinterpret_cast<const char *>(glGetStringi(GL_EXTENSIONS, i));
+
+                m_offsets << m_extensions.size();
+
+                while (*str != 0)
+                    m_extensions.append(*str++);
+                m_extensions.append(' ');
+            }
+        }
+    }
+}
+
+void QGLExtensionMatcher::init(const char *str)
+{
+    m_extensions = str;
+
+    // make sure extension string ends with a space
+    if (!m_extensions.endsWith(' '))
+        m_extensions.append(' ');
+
+    int index = 0;
+    int next = 0;
+    while ((next = m_extensions.indexOf(' ', index)) >= 0) {
+        m_offsets << index;
+        index = next + 1;
+    }
+}
+
+/*
+    Returns the GL extensions for the current context.
+*/
+QGLExtensions::Extensions QGLExtensions::currentContextExtensions()
+{
+    QGLExtensionMatcher extensions;
+    Extensions glExtensions;
+
+    if (extensions.match("GL_ARB_texture_rectangle"))
+        glExtensions |= TextureRectangle;
+    if (extensions.match("GL_ARB_multisample"))
+        glExtensions |= SampleBuffers;
+    if (extensions.match("GL_SGIS_generate_mipmap"))
+        glExtensions |= GenerateMipmap;
+    if (extensions.match("GL_ARB_texture_compression"))
+        glExtensions |= TextureCompression;
+    if (extensions.match("GL_EXT_texture_compression_s3tc"))
+        glExtensions |= DDSTextureCompression;
+    if (extensions.match("GL_OES_compressed_ETC1_RGB8_texture"))
+        glExtensions |= ETC1TextureCompression;
+    if (extensions.match("GL_IMG_texture_compression_pvrtc"))
+        glExtensions |= PVRTCTextureCompression;
+    if (extensions.match("GL_ARB_fragment_program"))
+        glExtensions |= FragmentProgram;
+    if (extensions.match("GL_ARB_fragment_shader"))
+        glExtensions |= FragmentShader;
+    if (extensions.match("GL_ARB_shader_objects"))
+        glExtensions |= FragmentShader;
+    if (extensions.match("GL_ARB_texture_mirrored_repeat"))
+        glExtensions |= MirroredRepeat;
+    if (extensions.match("GL_EXT_framebuffer_object"))
+        glExtensions |= FramebufferObject;
+    if (extensions.match("GL_EXT_stencil_two_side"))
+        glExtensions |= StencilTwoSide;
+    if (extensions.match("GL_EXT_stencil_wrap"))
+        glExtensions |= StencilWrap;
+    if (extensions.match("GL_EXT_packed_depth_stencil"))
+        glExtensions |= PackedDepthStencil;
+    if (extensions.match("GL_NV_float_buffer"))
+        glExtensions |= NVFloatBuffer;
+    if (extensions.match("GL_ARB_pixel_buffer_object"))
+        glExtensions |= PixelBufferObject;
+    if (extensions.match("GL_IMG_texture_format_BGRA8888"))
+        glExtensions |= BGRATextureFormat;
+#if defined(QT_OPENGL_ES_2)
+    glExtensions |= FramebufferObject;
+    glExtensions |= GenerateMipmap;
+    glExtensions |= FragmentShader;
+#endif
+#if defined(QT_OPENGL_ES_1)
+    if (extensions.match("GL_OES_framebuffer_object"))
+        glExtensions |= FramebufferObject;
+#endif
+#if defined(QT_OPENGL_ES)
+    if (extensions.match("GL_OES_packed_depth_stencil"))
+        glExtensions |= PackedDepthStencil;
+    if (extensions.match("GL_OES_element_index_uint"))
+        glExtensions |= ElementIndexUint;
+    if (extensions.match("GL_OES_depth24"))
+        glExtensions |= Depth24;
+#else
+    glExtensions |= ElementIndexUint;
+#endif
+    if (extensions.match("GL_ARB_framebuffer_object")) {
+        // ARB_framebuffer_object also includes EXT_framebuffer_blit.
+        glExtensions |= FramebufferObject;
+        glExtensions |= FramebufferBlit;
+    }
+
+    if (extensions.match("GL_EXT_framebuffer_blit"))
+        glExtensions |= FramebufferBlit;
+
+    if (extensions.match("GL_ARB_texture_non_power_of_two"))
+        glExtensions |= NPOTTextures;
+
+    if (extensions.match("GL_EXT_bgra"))
+        glExtensions |= BGRATextureFormat;
+
+    return glExtensions;
+}
+
+
+class QGLDefaultExtensions
+{
+public:
+    QGLDefaultExtensions() {
+        QGLTemporaryContext tempContext;
+        extensions = QGLExtensions::currentContextExtensions();
+    }
+
+    QGLExtensions::Extensions extensions;
+};
+
+Q_GLOBAL_STATIC(QGLDefaultExtensions, qtDefaultExtensions)
+
+/*
+    Returns the GL extensions for the current QGLContext. If there is no
+    current QGLContext, a default context will be created and the extensions
+    for that context will be returned instead.
+*/
+QGLExtensions::Extensions QGLExtensions::glExtensions()
+{
+    Extensions extensionFlags = 0;
+    QGLContext *currentCtx = const_cast<QGLContext *>(QGLContext::currentContext());
+
+    if (currentCtx && currentCtx->d_func()->extension_flags_cached)
+        return currentCtx->d_func()->extension_flags;
+
+    if (!currentCtx) {
+        extensionFlags = qtDefaultExtensions()->extensions;
+    } else {
+        extensionFlags = currentContextExtensions();
+        currentCtx->d_func()->extension_flags_cached = true;
+        currentCtx->d_func()->extension_flags = extensionFlags;
+    }
+    return extensionFlags;
+}
+
+/*
+  This is the shared initialization for all platforms. Called from QGLWidgetPrivate::init()
+*/
+void QGLWidgetPrivate::initContext(QGLContext *context, const QGLWidget* shareWidget)
+{
+    Q_Q(QGLWidget);
+
+    glDevice.setWidget(q);
+
+    glcx = 0;
+    autoSwap = true;
+
+    if (context && !context->device())
+        context->setDevice(q);
+    q->setContext(context, shareWidget ? shareWidget->context() : 0);
+
+    if (!glcx)
+        glcx = new QGLContext(QGLFormat::defaultFormat(), q);
+}
+
+#if defined(Q_WS_X11) || defined(Q_WS_MAC) || defined(Q_WS_QWS) || defined(Q_WS_QPA)
+Q_GLOBAL_STATIC(QString, qt_gl_lib_name)
+
+Q_OPENGL_EXPORT void qt_set_gl_library_name(const QString& name)
+{
+    qt_gl_lib_name()->operator=(name);
+}
+
+Q_OPENGL_EXPORT const QString qt_gl_library_name()
+{
+    if (qt_gl_lib_name()->isNull()) {
+#ifdef Q_WS_MAC
+        return QLatin1String("/System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib");
+#else
+# if defined(QT_OPENGL_ES_1)
+        return QLatin1String("GLES_CM");
+# elif defined(QT_OPENGL_ES_2)
+        return QLatin1String("GLESv2");
+# else
+        return QLatin1String("GL");
+# endif
+#endif // defined Q_WS_MAC
+    }
+    return *qt_gl_lib_name();
+}
+#endif
+
+void QGLContextGroup::addShare(const QGLContext *context, const QGLContext *share) {
+    Q_ASSERT(context && share);
+    if (context->d_ptr->group == share->d_ptr->group)
+        return;
+
+    // Make sure 'context' is not already shared with another group of contexts.
+    Q_ASSERT(context->d_ptr->group->m_refs == 1);
+
+    // Free 'context' group resources and make it use the same resources as 'share'.
+    QGLContextGroup *group = share->d_ptr->group;
+    delete context->d_ptr->group;
+    context->d_ptr->group = group;
+    group->m_refs.ref();
+
+    // Maintain a list of all the contexts in each group of sharing contexts.
+    // The list is empty if the "share" context wasn't sharing already.
+    if (group->m_shares.isEmpty())
+        group->m_shares.append(share);
+    group->m_shares.append(context);
+}
+
+void QGLContextGroup::removeShare(const QGLContext *context) {
+    // Remove the context from the group.
+    QGLContextGroup *group = context->d_ptr->group;
+    if (group->m_shares.isEmpty())
+        return;
+    group->m_shares.removeAll(context);
+
+    // Update context group representative.
+    Q_ASSERT(group->m_shares.size() != 0);
+    if (group->m_context == context)
+        group->m_context = group->m_shares[0];
+
+    // If there is only one context left, then make the list empty.
+    if (group->m_shares.size() == 1)
+        group->m_shares.clear();
+}
+
+QGLContextGroupResourceBase::QGLContextGroupResourceBase()
+    : active(0)
+{
+#ifdef QT_GL_CONTEXT_RESOURCE_DEBUG
+    qDebug("Creating context group resource object %p.", this);
+#endif
+}
+
+QGLContextGroupResourceBase::~QGLContextGroupResourceBase()
+{
+#ifdef QT_GL_CONTEXT_RESOURCE_DEBUG
+    qDebug("Deleting context group resource %p. Group size: %d.", this, m_groups.size());
+#endif
+    for (int i = 0; i < m_groups.size(); ++i) {
+        m_groups.at(i)->m_resources.remove(this);
+        active.deref();
+    }
+#ifndef QT_NO_DEBUG
+    if (active != 0) {
+        qWarning("QtOpenGL: Resources are still available at program shutdown.\n"
+                 "          This is possibly caused by a leaked QGLWidget, \n"
+                 "          QGLFramebufferObject or QGLPixelBuffer.");
+    }
+#endif
+}
+
+void QGLContextGroupResourceBase::insert(const QGLContext *context, void *value)
+{
+#ifdef QT_GL_CONTEXT_RESOURCE_DEBUG
+    qDebug("Inserting context group resource %p for context %p, managed by %p.", value, context, this);
+#endif
+    QGLContextGroup *group = QGLContextPrivate::contextGroup(context);
+    Q_ASSERT(!group->m_resources.contains(this));
+    group->m_resources.insert(this, value);
+    m_groups.append(group);
+    active.ref();
+}
+
+void *QGLContextGroupResourceBase::value(const QGLContext *context)
+{
+    QGLContextGroup *group = QGLContextPrivate::contextGroup(context);
+    return group->m_resources.value(this, 0);
+}
+
+void QGLContextGroupResourceBase::cleanup(const QGLContext *ctx)
+{
+    void *resource = value(ctx);
+
+    if (resource != 0) {
+        QGLShareContextScope scope(ctx);
+        freeResource(resource);
+
+        QGLContextGroup *group = QGLContextPrivate::contextGroup(ctx);
+        group->m_resources.remove(this);
+        m_groups.removeOne(group);
+        active.deref();
+    }
+}
+
+void QGLContextGroupResourceBase::cleanup(const QGLContext *ctx, void *value)
+{
+#ifdef QT_GL_CONTEXT_RESOURCE_DEBUG
+    qDebug("Cleaning up context group resource %p, for context %p in thread %p.", this, ctx, QThread::currentThread());
+#endif
+    QGLShareContextScope scope(ctx);
+    freeResource(value);
+    active.deref();
+
+    QGLContextGroup *group = QGLContextPrivate::contextGroup(ctx);
+    m_groups.removeOne(group);
+}
+
+void QGLContextGroup::cleanupResources(const QGLContext *context)
+{
+    // If there are still shares, then no cleanup to be done yet.
+    if (m_shares.size() > 1)
+        return;
+
+    // Iterate over all resources and free each in turn.
+    QHash<QGLContextGroupResourceBase *, void *>::ConstIterator it;
+    for (it = m_resources.begin(); it != m_resources.end(); ++it)
+        it.key()->cleanup(context, it.value());
+}
+
+QGLSharedResourceGuard::~QGLSharedResourceGuard()
+{
+    if (m_group)
+        m_group->removeGuard(this);
+}
+
+void QGLSharedResourceGuard::setContext(const QGLContext *context)
+{
+    if (m_group)
+        m_group->removeGuard(this);
+    if (context) {
+        m_group = QGLContextPrivate::contextGroup(context);
+        m_group->addGuard(this);
+    } else {
+        m_group = 0;
+    }
+}
+
+QSize QGLTexture::bindCompressedTexture
+    (const QString& fileName, const char *format)
+{
+    QFile file(fileName);
+    if (!file.open(QIODevice::ReadOnly))
+        return QSize();
+    QByteArray contents = file.readAll();
+    file.close();
+    return bindCompressedTexture
+        (contents.constData(), contents.size(), format);
+}
+
+// PVR header format for container files that store textures compressed
+// with the ETC1, PVRTC2, and PVRTC4 encodings.  Format information from the
+// PowerVR SDK at http://www.imgtec.com/powervr/insider/powervr-sdk.asp
+// "PVRTexTool Reference Manual, version 1.11f".
+struct PvrHeader
+{
+    quint32 headerSize;
+    quint32 height;
+    quint32 width;
+    quint32 mipMapCount;
+    quint32 flags;
+    quint32 dataSize;
+    quint32 bitsPerPixel;
+    quint32 redMask;
+    quint32 greenMask;
+    quint32 blueMask;
+    quint32 alphaMask;
+    quint32 magic;
+    quint32 surfaceCount;
+};
+
+#define PVR_MAGIC               0x21525650      // "PVR!" in little-endian
+
+#define PVR_FORMAT_MASK         0x000000FF
+#define PVR_FORMAT_PVRTC2       0x00000018
+#define PVR_FORMAT_PVRTC4       0x00000019
+#define PVR_FORMAT_ETC1         0x00000036
+
+#define PVR_HAS_MIPMAPS         0x00000100
+#define PVR_TWIDDLED            0x00000200
+#define PVR_NORMAL_MAP          0x00000400
+#define PVR_BORDER_ADDED        0x00000800
+#define PVR_CUBE_MAP            0x00001000
+#define PVR_FALSE_COLOR_MIPMAPS 0x00002000
+#define PVR_VOLUME_TEXTURE      0x00004000
+#define PVR_ALPHA_IN_TEXTURE    0x00008000
+#define PVR_VERTICAL_FLIP       0x00010000
+
+#ifndef GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG
+#define GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG      0x8C00
+#define GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG      0x8C01
+#define GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG     0x8C02
+#define GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG     0x8C03
+#endif
+
+#ifndef GL_ETC1_RGB8_OES
+#define GL_ETC1_RGB8_OES                        0x8D64
+#endif
+
+bool QGLTexture::canBindCompressedTexture
+    (const char *buf, int len, const char *format, bool *hasAlpha)
+{
+    if (QSysInfo::ByteOrder != QSysInfo::LittleEndian) {
+        // Compressed texture loading only supported on little-endian
+        // systems such as x86 and ARM at the moment.
+        return false;
+    }
+    if (!format) {
+        // Auto-detect the format from the header.
+        if (len >= 4 && !qstrncmp(buf, "DDS ", 4)) {
+            *hasAlpha = true;
+            return true;
+        } else if (len >= 52 && !qstrncmp(buf + 44, "PVR!", 4)) {
+            const PvrHeader *pvrHeader =
+                reinterpret_cast<const PvrHeader *>(buf);
+            *hasAlpha = (pvrHeader->alphaMask != 0);
+            return true;
+        }
+    } else {
+        // Validate the format against the header.
+        if (!qstricmp(format, "DDS")) {
+            if (len >= 4 && !qstrncmp(buf, "DDS ", 4)) {
+                *hasAlpha = true;
+                return true;
+            }
+        } else if (!qstricmp(format, "PVR") || !qstricmp(format, "ETC1")) {
+            if (len >= 52 && !qstrncmp(buf + 44, "PVR!", 4)) {
+                const PvrHeader *pvrHeader =
+                    reinterpret_cast<const PvrHeader *>(buf);
+                *hasAlpha = (pvrHeader->alphaMask != 0);
+                return true;
+            }
+        }
+    }
+    return false;
+}
+
+#define ctx QGLContext::currentContext()
+
+QSize QGLTexture::bindCompressedTexture
+    (const char *buf, int len, const char *format)
+{
+    if (QSysInfo::ByteOrder != QSysInfo::LittleEndian) {
+        // Compressed texture loading only supported on little-endian
+        // systems such as x86 and ARM at the moment.
+        return QSize();
+    }
+#if !defined(QT_OPENGL_ES)
+    if (!glCompressedTexImage2D) {
+        if (!(QGLExtensions::glExtensions() & QGLExtensions::TextureCompression)) {
+            qWarning("QGLContext::bindTexture(): The GL implementation does "
+                     "not support texture compression extensions.");
+            return QSize();
+        }
+        glCompressedTexImage2D = (_glCompressedTexImage2DARB) ctx->getProcAddress(QLatin1String("glCompressedTexImage2DARB"));
+        if (!glCompressedTexImage2D) {
+            qWarning("QGLContext::bindTexture(): could not resolve "
+                     "glCompressedTexImage2DARB.");
+            return QSize();
+        }
+    }
+#endif
+    if (!format) {
+        // Auto-detect the format from the header.
+        if (len >= 4 && !qstrncmp(buf, "DDS ", 4))
+            return bindCompressedTextureDDS(buf, len);
+        else if (len >= 52 && !qstrncmp(buf + 44, "PVR!", 4))
+            return bindCompressedTexturePVR(buf, len);
+    } else {
+        // Validate the format against the header.
+        if (!qstricmp(format, "DDS")) {
+            if (len >= 4 && !qstrncmp(buf, "DDS ", 4))
+                return bindCompressedTextureDDS(buf, len);
+        } else if (!qstricmp(format, "PVR") || !qstricmp(format, "ETC1")) {
+            if (len >= 52 && !qstrncmp(buf + 44, "PVR!", 4))
+                return bindCompressedTexturePVR(buf, len);
+        }
+    }
+    return QSize();
+}
+
+QSize QGLTexture::bindCompressedTextureDDS(const char *buf, int len)
+{
+    // We only support 2D texture loading at present.
+    if (target != GL_TEXTURE_2D)
+        return QSize();
+
+    // Bail out if the necessary extension is not present.
+    if (!(QGLExtensions::glExtensions() & QGLExtensions::DDSTextureCompression)) {
+        qWarning("QGLContext::bindTexture(): DDS texture compression is not supported.");
+        return QSize();
+    }
+
+    const DDSFormat *ddsHeader = reinterpret_cast<const DDSFormat *>(buf + 4);
+    if (!ddsHeader->dwLinearSize) {
+        qWarning("QGLContext::bindTexture(): DDS image size is not valid.");
+        return QSize();
+    }
+
+    int blockSize = 16;
+    GLenum format;
+
+    switch(ddsHeader->ddsPixelFormat.dwFourCC) {
+    case FOURCC_DXT1:
+        format = GL_COMPRESSED_RGBA_S3TC_DXT1_EXT;
+        blockSize = 8;
+        break;
+    case FOURCC_DXT3:
+        format = GL_COMPRESSED_RGBA_S3TC_DXT3_EXT;
+        break;
+    case FOURCC_DXT5:
+        format = GL_COMPRESSED_RGBA_S3TC_DXT5_EXT;
+        break;
+    default:
+        qWarning("QGLContext::bindTexture(): DDS image format not supported.");
+        return QSize();
+    }
+
+    const GLubyte *pixels =
+        reinterpret_cast<const GLubyte *>(buf + ddsHeader->dwSize + 4);
+
+    glGenTextures(1, &id);
+    glBindTexture(GL_TEXTURE_2D, id);
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+
+    int size;
+    int offset = 0;
+    int available = len - int(ddsHeader->dwSize + 4);
+    int w = ddsHeader->dwWidth;
+    int h = ddsHeader->dwHeight;
+
+    // load mip-maps
+    for(int i = 0; i < (int) ddsHeader->dwMipMapCount; ++i) {
+        if (w == 0) w = 1;
+        if (h == 0) h = 1;
+
+        size = ((w+3)/4) * ((h+3)/4) * blockSize;
+        if (size > available)
+            break;
+        glCompressedTexImage2D(GL_TEXTURE_2D, i, format, w, h, 0,
+                               size, pixels + offset);
+        offset += size;
+        available -= size;
+
+        // half size for each mip-map level
+        w = w/2;
+        h = h/2;
+    }
+
+    // DDS images are not inverted.
+    options &= ~QGLContext::InvertedYBindOption;
+
+    return QSize(ddsHeader->dwWidth, ddsHeader->dwHeight);
+}
+
+QSize QGLTexture::bindCompressedTexturePVR(const char *buf, int len)
+{
+    // We only support 2D texture loading at present.  Cube maps later.
+    if (target != GL_TEXTURE_2D)
+        return QSize();
+
+    // Determine which texture format we will be loading.
+    const PvrHeader *pvrHeader = reinterpret_cast<const PvrHeader *>(buf);
+    GLenum textureFormat;
+    quint32 minWidth, minHeight;
+    switch (pvrHeader->flags & PVR_FORMAT_MASK) {
+    case PVR_FORMAT_PVRTC2:
+        if (pvrHeader->alphaMask)
+            textureFormat = GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG;
+        else
+            textureFormat = GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG;
+        minWidth = 16;
+        minHeight = 8;
+        break;
+
+    case PVR_FORMAT_PVRTC4:
+        if (pvrHeader->alphaMask)
+            textureFormat = GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG;
+        else
+            textureFormat = GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG;
+        minWidth = 8;
+        minHeight = 8;
+        break;
+
+    case PVR_FORMAT_ETC1:
+        textureFormat = GL_ETC1_RGB8_OES;
+        minWidth = 4;
+        minHeight = 4;
+        break;
+
+    default:
+        qWarning("QGLContext::bindTexture(): PVR image format 0x%x not supported.", int(pvrHeader->flags & PVR_FORMAT_MASK));
+        return QSize();
+    }
+
+    // Bail out if the necessary extension is not present.
+    if (textureFormat == GL_ETC1_RGB8_OES) {
+        if (!(QGLExtensions::glExtensions() &
+                    QGLExtensions::ETC1TextureCompression)) {
+            qWarning("QGLContext::bindTexture(): ETC1 texture compression is not supported.");
+            return QSize();
+        }
+    } else {
+        if (!(QGLExtensions::glExtensions() &
+                    QGLExtensions::PVRTCTextureCompression)) {
+            qWarning("QGLContext::bindTexture(): PVRTC texture compression is not supported.");
+            return QSize();
+        }
+    }
+
+    // Boundary check on the buffer size.
+    quint32 bufferSize = pvrHeader->headerSize + pvrHeader->dataSize;
+    if (bufferSize > quint32(len)) {
+        qWarning("QGLContext::bindTexture(): PVR image size is not valid.");
+        return QSize();
+    }
+
+    // Create the texture.
+    glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+    glGenTextures(1, &id);
+    glBindTexture(GL_TEXTURE_2D, id);
+    if (pvrHeader->mipMapCount) {
+        if ((options & QGLContext::LinearFilteringBindOption) != 0) {
+            glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+            glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
+        } else {
+            glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+            glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST);
+        }
+    } else if ((options & QGLContext::LinearFilteringBindOption) != 0) {
+        glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+        glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+    } else {
+        glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+        glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+    }
+
+    // Load the compressed mipmap levels.
+    const GLubyte *buffer =
+        reinterpret_cast<const GLubyte *>(buf + pvrHeader->headerSize);
+    bufferSize = pvrHeader->dataSize;
+    quint32 level = 0;
+    quint32 width = pvrHeader->width;
+    quint32 height = pvrHeader->height;
+    while (bufferSize > 0 && level <= pvrHeader->mipMapCount) {
+        quint32 size =
+            (qMax(width, minWidth) * qMax(height, minHeight) *
+             pvrHeader->bitsPerPixel) / 8;
+        if (size > bufferSize)
+            break;
+        glCompressedTexImage2D(GL_TEXTURE_2D, GLint(level), textureFormat,
+                               GLsizei(width), GLsizei(height), 0,
+                               GLsizei(size), buffer);
+        width /= 2;
+        height /= 2;
+        buffer += size;
+        ++level;
+    }
+
+    // Restore the default pixel alignment for later texture uploads.
+    glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
+
+    // Set the invert flag for the texture.  The "vertical flip"
+    // flag in PVR is the opposite sense to our sense of inversion.
+    if ((pvrHeader->flags & PVR_VERTICAL_FLIP) != 0)
+        options &= ~QGLContext::InvertedYBindOption;
+    else
+        options |= QGLContext::InvertedYBindOption;
+
+    return QSize(pvrHeader->width, pvrHeader->height);
+}
+
+#undef ctx
+
+QT_END_NAMESPACE
diff --git a/src/opengl/qgl.h b/src/opengl/qgl.h
new file mode 100644
index 0000000000..c57995d8d0
--- /dev/null
+++ b/src/opengl/qgl.h
@@ -0,0 +1,668 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QGL_H
+#define QGL_H
+
+#include <QtGui/qwidget.h>
+#include <QtGui/qpaintengine.h>
+#include <QtOpenGL/qglcolormap.h>
+#include <QtCore/qmap.h>
+#include <QtCore/qscopedpointer.h>
+
+#ifdef Q_WS_QPA
+#include <QtGui/QPlatformWindowFormat>
+#endif
+
+QT_BEGIN_HEADER
+
+#if defined(Q_WS_WIN)
+# include <QtCore/qt_windows.h>
+#endif
+
+#if defined(Q_WS_MAC)
+# include <OpenGL/gl.h>
+#elif defined(QT_OPENGL_ES_1)
+# if defined(Q_OS_MAC)
+#  include <OpenGLES/ES1/gl.h>
+# else
+#  include <GLES/gl.h>
+# endif
+# ifndef GL_DOUBLE
+#  define GL_DOUBLE GL_FLOAT
+# endif
+# ifndef GLdouble
+typedef GLfloat GLdouble;
+# endif
+#elif defined(QT_OPENGL_ES_2)
+# if defined(Q_OS_MAC)
+#  include <OpenGLES/ES2/gl.h>
+# else
+#  include <GLES2/gl2.h>
+# endif
+# ifndef GL_DOUBLE
+#  define GL_DOUBLE GL_FLOAT
+# endif
+# ifndef GLdouble
+typedef GLfloat GLdouble;
+# endif
+#else
+# include <GL/gl.h>
+#endif
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(OpenGL)
+
+#if defined(Q_WS_MAC) && defined (QT_BUILD_OPENGL_LIB) && !defined(QT_MAC_USE_COCOA) && !defined(QDOC)
+#define Q_MAC_COMPAT_GL_FUNCTIONS
+
+template <typename T>
+struct QMacGLCompatTypes
+{
+    typedef long CompatGLint;
+    typedef unsigned long CompatGLuint;
+    typedef unsigned long CompatGLenum;
+};
+
+template <>
+struct QMacGLCompatTypes<long>
+{
+    typedef int CompatGLint;
+    typedef unsigned int CompatGLuint;
+    typedef unsigned int CompatGLenum;
+};
+
+typedef QMacGLCompatTypes<GLint>::CompatGLint QMacCompatGLint;
+typedef QMacGLCompatTypes<GLint>::CompatGLuint QMacCompatGLuint;
+typedef QMacGLCompatTypes<GLint>::CompatGLenum QMacCompatGLenum;
+
+#endif
+
+#ifdef QT3_SUPPORT
+#define QGL_VERSION        460
+#define QGL_VERSION_STR        "4.6"
+inline QT3_SUPPORT const char *qGLVersion() {
+    return QGL_VERSION_STR;
+}
+#endif
+
+#if defined(Q_WS_WIN) || defined(Q_WS_MAC)
+class QGLCmap;
+#endif
+
+class QPixmap;
+#if defined(Q_WS_X11) && !defined(QT_OPENGL_ES)
+class QGLOverlayWidget;
+#endif
+class QGLWidgetPrivate;
+class QGLContextPrivate;
+
+// Namespace class:
+namespace QGL
+{
+    Q_OPENGL_EXPORT void setPreferredPaintEngine(QPaintEngine::Type engineType);
+
+    enum FormatOption {
+        DoubleBuffer            = 0x0001,
+        DepthBuffer             = 0x0002,
+        Rgba                    = 0x0004,
+        AlphaChannel            = 0x0008,
+        AccumBuffer             = 0x0010,
+        StencilBuffer           = 0x0020,
+        StereoBuffers           = 0x0040,
+        DirectRendering         = 0x0080,
+        HasOverlay              = 0x0100,
+        SampleBuffers           = 0x0200,
+        DeprecatedFunctions     = 0x0400,
+        SingleBuffer            = DoubleBuffer    << 16,
+        NoDepthBuffer           = DepthBuffer     << 16,
+        ColorIndex              = Rgba            << 16,
+        NoAlphaChannel          = AlphaChannel    << 16,
+        NoAccumBuffer           = AccumBuffer     << 16,
+        NoStencilBuffer         = StencilBuffer   << 16,
+        NoStereoBuffers         = StereoBuffers   << 16,
+        IndirectRendering       = DirectRendering << 16,
+        NoOverlay               = HasOverlay      << 16,
+        NoSampleBuffers         = SampleBuffers   << 16,
+        NoDeprecatedFunctions   = DeprecatedFunctions << 16
+    };
+    Q_DECLARE_FLAGS(FormatOptions, FormatOption)
+}
+
+Q_DECLARE_OPERATORS_FOR_FLAGS(QGL::FormatOptions)
+
+class QGLFormatPrivate;
+
+class Q_OPENGL_EXPORT QGLFormat
+{
+public:
+    QGLFormat();
+    QGLFormat(QGL::FormatOptions options, int plane = 0);
+    QGLFormat(const QGLFormat &other);
+    QGLFormat &operator=(const QGLFormat &other);
+    ~QGLFormat();
+
+    void setDepthBufferSize(int size);
+    int  depthBufferSize() const;
+
+    void setAccumBufferSize(int size);
+    int  accumBufferSize() const;
+
+    void setRedBufferSize(int size);
+    int  redBufferSize() const;
+
+    void setGreenBufferSize(int size);
+    int  greenBufferSize() const;
+
+    void setBlueBufferSize(int size);
+    int  blueBufferSize() const;
+
+    void setAlphaBufferSize(int size);
+    int  alphaBufferSize() const;
+
+    void setStencilBufferSize(int size);
+    int  stencilBufferSize() const;
+
+    void setSampleBuffers(bool enable);
+    bool sampleBuffers() const;
+
+    void setSamples(int numSamples);
+    int  samples() const;
+
+    void setSwapInterval(int interval);
+    int  swapInterval() const;
+
+    bool doubleBuffer() const;
+    void setDoubleBuffer(bool enable);
+    bool depth() const;
+    void setDepth(bool enable);
+    bool rgba() const;
+    void setRgba(bool enable);
+    bool alpha() const;
+    void setAlpha(bool enable);
+    bool accum() const;
+    void setAccum(bool enable);
+    bool stencil() const;
+    void setStencil(bool enable);
+    bool stereo() const;
+    void setStereo(bool enable);
+    bool directRendering() const;
+    void setDirectRendering(bool enable);
+    bool hasOverlay() const;
+    void setOverlay(bool enable);
+
+    int plane() const;
+    void setPlane(int plane);
+
+    void setOption(QGL::FormatOptions opt);
+    bool testOption(QGL::FormatOptions opt) const;
+
+    static QGLFormat defaultFormat();
+    static void setDefaultFormat(const QGLFormat& f);
+
+    static QGLFormat defaultOverlayFormat();
+    static void setDefaultOverlayFormat(const QGLFormat& f);
+
+    static bool hasOpenGL();
+    static bool hasOpenGLOverlays();
+
+    void setVersion(int major, int minor);
+    int majorVersion() const;
+    int minorVersion() const;
+
+    enum OpenGLContextProfile {
+        NoProfile,
+        CoreProfile,
+        CompatibilityProfile
+    };
+
+    void setProfile(OpenGLContextProfile profile);
+    OpenGLContextProfile profile() const;
+
+    enum OpenGLVersionFlag {
+        OpenGL_Version_None               = 0x00000000,
+        OpenGL_Version_1_1                = 0x00000001,
+        OpenGL_Version_1_2                = 0x00000002,
+        OpenGL_Version_1_3                = 0x00000004,
+        OpenGL_Version_1_4                = 0x00000008,
+        OpenGL_Version_1_5                = 0x00000010,
+        OpenGL_Version_2_0                = 0x00000020,
+        OpenGL_Version_2_1                = 0x00000040,
+        OpenGL_ES_Common_Version_1_0      = 0x00000080,
+        OpenGL_ES_CommonLite_Version_1_0  = 0x00000100,
+        OpenGL_ES_Common_Version_1_1      = 0x00000200,
+        OpenGL_ES_CommonLite_Version_1_1  = 0x00000400,
+        OpenGL_ES_Version_2_0             = 0x00000800,
+        OpenGL_Version_3_0                = 0x00001000,
+        OpenGL_Version_3_1                = 0x00002000,
+        OpenGL_Version_3_2                = 0x00004000,
+        OpenGL_Version_3_3                = 0x00008000,
+        OpenGL_Version_4_0                = 0x00010000
+    };
+    Q_DECLARE_FLAGS(OpenGLVersionFlags, OpenGLVersionFlag)
+
+    static OpenGLVersionFlags openGLVersionFlags();
+
+#if defined(Q_WS_QPA)
+    static QGLFormat fromPlatformWindowFormat(const QPlatformWindowFormat &format);
+    static QPlatformWindowFormat toPlatformWindowFormat(const QGLFormat &format);
+#endif
+private:
+    QGLFormatPrivate *d;
+
+    void detach();
+
+    friend Q_OPENGL_EXPORT bool operator==(const QGLFormat&, const QGLFormat&);
+    friend Q_OPENGL_EXPORT bool operator!=(const QGLFormat&, const QGLFormat&);
+#ifndef QT_NO_DEBUG_STREAM
+    friend Q_OPENGL_EXPORT QDebug operator<<(QDebug, const QGLFormat &);
+#endif
+};
+
+Q_DECLARE_OPERATORS_FOR_FLAGS(QGLFormat::OpenGLVersionFlags)
+
+Q_OPENGL_EXPORT bool operator==(const QGLFormat&, const QGLFormat&);
+Q_OPENGL_EXPORT bool operator!=(const QGLFormat&, const QGLFormat&);
+
+#ifndef QT_NO_DEBUG_STREAM
+Q_OPENGL_EXPORT QDebug operator<<(QDebug, const QGLFormat &);
+#endif
+
+class Q_OPENGL_EXPORT QGLContext
+{
+    Q_DECLARE_PRIVATE(QGLContext)
+public:
+    QGLContext(const QGLFormat& format, QPaintDevice* device);
+    QGLContext(const QGLFormat& format);
+    virtual ~QGLContext();
+
+    virtual bool create(const QGLContext* shareContext = 0);
+    bool isValid() const;
+    bool isSharing() const;
+    void reset();
+
+    static bool areSharing(const QGLContext *context1, const QGLContext *context2);
+
+    QGLFormat format() const;
+    QGLFormat requestedFormat() const;
+    void setFormat(const QGLFormat& format);
+
+    // ### Qt 5: return bools + maybe remove virtuals
+    virtual void makeCurrent();
+    virtual void doneCurrent();
+
+    virtual void swapBuffers() const;
+
+    enum BindOption {
+        NoBindOption                            = 0x0000,
+        InvertedYBindOption                     = 0x0001,
+        MipmapBindOption                        = 0x0002,
+        PremultipliedAlphaBindOption            = 0x0004,
+        LinearFilteringBindOption               = 0x0008,
+
+        MemoryManagedBindOption                 = 0x0010, // internal flag
+        CanFlipNativePixmapBindOption           = 0x0020, // internal flag
+        TemporarilyCachedBindOption             = 0x0040, // internal flag
+
+        DefaultBindOption                       = LinearFilteringBindOption
+                                                  | InvertedYBindOption
+                                                  | MipmapBindOption,
+        InternalBindOption                      = MemoryManagedBindOption
+                                                  | PremultipliedAlphaBindOption
+    };
+    Q_DECLARE_FLAGS(BindOptions, BindOption)
+
+    GLuint bindTexture(const QImage &image, GLenum target, GLint format,
+                       BindOptions options);
+    GLuint bindTexture(const QPixmap &pixmap, GLenum target, GLint format,
+                       BindOptions options);
+
+    GLuint bindTexture(const QImage &image, GLenum target = GL_TEXTURE_2D,
+                       GLint format = GL_RGBA);
+    GLuint bindTexture(const QPixmap &pixmap, GLenum target = GL_TEXTURE_2D,
+                       GLint format = GL_RGBA);
+    GLuint bindTexture(const QString &fileName);
+
+    void deleteTexture(GLuint tx_id);
+
+    void drawTexture(const QRectF &target, GLuint textureId, GLenum textureTarget = GL_TEXTURE_2D);
+    void drawTexture(const QPointF &point, GLuint textureId, GLenum textureTarget = GL_TEXTURE_2D);
+
+#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
+    GLuint bindTexture(const QImage &image, QMacCompatGLenum = GL_TEXTURE_2D,
+                       QMacCompatGLint format = GL_RGBA);
+    GLuint bindTexture(const QPixmap &pixmap, QMacCompatGLenum = GL_TEXTURE_2D,
+                       QMacCompatGLint format = GL_RGBA);
+    GLuint bindTexture(const QImage &image, QMacCompatGLenum, QMacCompatGLint format,
+                       BindOptions);
+    GLuint bindTexture(const QPixmap &pixmap, QMacCompatGLenum, QMacCompatGLint format,
+                       BindOptions);
+
+    void deleteTexture(QMacCompatGLuint tx_id);
+
+    void drawTexture(const QRectF &target, QMacCompatGLuint textureId, QMacCompatGLenum textureTarget = GL_TEXTURE_2D);
+    void drawTexture(const QPointF &point, QMacCompatGLuint textureId, QMacCompatGLenum textureTarget = GL_TEXTURE_2D);
+#endif
+
+    static void setTextureCacheLimit(int size);
+    static int textureCacheLimit();
+
+    void *getProcAddress(const QString &proc) const;
+    QPaintDevice* device() const;
+    QColor overlayTransparentColor() const;
+
+    static const QGLContext* currentContext();
+
+#ifdef Q_WS_QPA
+    static QGLContext *fromPlatformGLContext(QPlatformGLContext *platformContext);
+#endif
+protected:
+    virtual bool chooseContext(const QGLContext* shareContext = 0);
+
+#if defined(Q_WS_WIN)
+    virtual int choosePixelFormat(void* pfd, HDC pdc);
+#endif
+#if defined(Q_WS_X11) && defined(QT_NO_EGL)
+    virtual void* tryVisual(const QGLFormat& f, int bufDepth = 1);
+    virtual void* chooseVisual();
+#endif
+#if defined(Q_WS_MAC)
+    virtual void* chooseMacVisual(GDHandle);
+#endif
+
+    bool deviceIsPixmap() const;
+    bool windowCreated() const;
+    void setWindowCreated(bool on);
+    bool initialized() const;
+    void setInitialized(bool on);
+    void generateFontDisplayLists(const QFont & fnt, int listBase); // ### Qt 5: remove
+
+    uint colorIndex(const QColor& c) const;
+    void setValid(bool valid);
+    void setDevice(QPaintDevice *pDev);
+
+protected:
+    static QGLContext* currentCtx;
+
+private:
+#ifdef Q_WS_QPA
+    QGLContext(QPlatformGLContext *platformContext);
+#endif
+
+    QScopedPointer<QGLContextPrivate> d_ptr;
+
+    friend class QGLPixelBuffer;
+    friend class QGLPixelBufferPrivate;
+    friend class QGLWidget;
+    friend class QGLWidgetPrivate;
+    friend class QGLGlyphCache;
+    friend class QOpenGLPaintEngine;
+    friend class QOpenGLPaintEnginePrivate;
+    friend class QGL2PaintEngineEx;
+    friend class QGL2PaintEngineExPrivate;
+    friend class QGLEngineShaderManager;
+    friend class QGLWindowSurface;
+    friend class QGLPixmapData;
+    friend class QGLPixmapFilterBase;
+    friend class QGLTextureGlyphCache;
+    friend struct QGLGlyphTexture;
+    friend class QGLContextGroup;
+    friend class QGLSharedResourceGuard;
+    friend class QGLPixmapBlurFilter;
+    friend class QGLExtensions;
+    friend class QGLTexture;
+    friend QGLFormat::OpenGLVersionFlags QGLFormat::openGLVersionFlags();
+#ifdef Q_WS_MAC
+public:
+    void updatePaintDevice();
+private:
+    friend class QMacGLWindowChangeEvent;
+    friend QGLContextPrivate *qt_phonon_get_dptr(const QGLContext *);
+#endif
+    friend class QGLFramebufferObject;
+    friend class QGLFramebufferObjectPrivate;
+    friend class QGLFBOGLPaintDevice;
+    friend class QGLPaintDevice;
+    friend class QGLWidgetGLPaintDevice;
+    friend class QX11GLPixmapData;
+    friend class QX11GLSharedContexts;
+    friend class QGLContextResourceBase;
+private:
+    Q_DISABLE_COPY(QGLContext)
+};
+
+Q_DECLARE_OPERATORS_FOR_FLAGS(QGLContext::BindOptions)
+
+class Q_OPENGL_EXPORT QGLWidget : public QWidget
+{
+    Q_OBJECT
+    Q_DECLARE_PRIVATE(QGLWidget)
+public:
+    explicit QGLWidget(QWidget* parent=0,
+                       const QGLWidget* shareWidget = 0, Qt::WindowFlags f=0);
+    explicit QGLWidget(QGLContext *context, QWidget* parent=0,
+                       const QGLWidget* shareWidget = 0, Qt::WindowFlags f=0);
+    explicit QGLWidget(const QGLFormat& format, QWidget* parent=0,
+                       const QGLWidget* shareWidget = 0, Qt::WindowFlags f=0);
+#ifdef QT3_SUPPORT
+    QT3_SUPPORT_CONSTRUCTOR QGLWidget(QWidget* parent, const char* name,
+                                    const QGLWidget* shareWidget = 0, Qt::WindowFlags f=0);
+    QT3_SUPPORT_CONSTRUCTOR QGLWidget(QGLContext *context, QWidget* parent, const char* name,
+                                    const QGLWidget* shareWidget = 0, Qt::WindowFlags f=0);
+    QT3_SUPPORT_CONSTRUCTOR QGLWidget(const QGLFormat& format, QWidget* parent, const char* name,
+                                    const QGLWidget* shareWidget = 0, Qt::WindowFlags f=0);
+#endif
+    ~QGLWidget();
+
+    void qglColor(const QColor& c) const;
+    void qglClearColor(const QColor& c) const;
+
+    bool isValid() const;
+    bool isSharing() const;
+
+    // ### Qt 5: return bools
+    void makeCurrent();
+    void doneCurrent();
+
+    bool doubleBuffer() const;
+    void swapBuffers();
+
+    QGLFormat format() const;
+    void setFormat(const QGLFormat& format);
+
+    const QGLContext* context() const;
+    void setContext(QGLContext* context, const QGLContext* shareContext = 0,
+                    bool deleteOldContext = true);
+
+    QPixmap renderPixmap(int w = 0, int h = 0, bool useContext = false);
+    QImage grabFrameBuffer(bool withAlpha = false);
+
+    void makeOverlayCurrent();
+    const QGLContext* overlayContext() const;
+
+    static QImage convertToGLFormat(const QImage& img);
+
+    void setMouseTracking(bool enable);
+
+    const QGLColormap & colormap() const;
+    void  setColormap(const QGLColormap & map);
+
+    void renderText(int x, int y, const QString & str,
+                     const QFont & fnt = QFont(), int listBase = 2000);
+    void renderText(double x, double y, double z, const QString & str,
+                     const QFont & fnt = QFont(), int listBase = 2000);
+    QPaintEngine *paintEngine() const;
+
+    GLuint bindTexture(const QImage &image, GLenum target, GLint format,
+                       QGLContext::BindOptions options);
+    GLuint bindTexture(const QPixmap &pixmap, GLenum target, GLint format,
+                       QGLContext::BindOptions options);
+
+    GLuint bindTexture(const QImage &image, GLenum target = GL_TEXTURE_2D,
+                       GLint format = GL_RGBA);
+    GLuint bindTexture(const QPixmap &pixmap, GLenum target = GL_TEXTURE_2D,
+                       GLint format = GL_RGBA);
+
+    GLuint bindTexture(const QString &fileName);
+
+    void deleteTexture(GLuint tx_id);
+
+    void drawTexture(const QRectF &target, GLuint textureId, GLenum textureTarget = GL_TEXTURE_2D);
+    void drawTexture(const QPointF &point, GLuint textureId, GLenum textureTarget = GL_TEXTURE_2D);
+
+#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
+    GLuint bindTexture(const QImage &image, QMacCompatGLenum = GL_TEXTURE_2D,
+                       QMacCompatGLint format = GL_RGBA);
+    GLuint bindTexture(const QPixmap &pixmap, QMacCompatGLenum = GL_TEXTURE_2D,
+                       QMacCompatGLint format = GL_RGBA);
+    GLuint bindTexture(const QImage &image, QMacCompatGLenum, QMacCompatGLint format,
+                       QGLContext::BindOptions);
+    GLuint bindTexture(const QPixmap &pixmap, QMacCompatGLenum, QMacCompatGLint format,
+                       QGLContext::BindOptions);
+
+    void deleteTexture(QMacCompatGLuint tx_id);
+
+    void drawTexture(const QRectF &target, QMacCompatGLuint textureId, QMacCompatGLenum textureTarget = GL_TEXTURE_2D);
+    void drawTexture(const QPointF &point, QMacCompatGLuint textureId, QMacCompatGLenum textureTarget = GL_TEXTURE_2D);
+#endif
+
+public Q_SLOTS:
+    virtual void updateGL();
+    virtual void updateOverlayGL();
+
+protected:
+    bool event(QEvent *);
+    virtual void initializeGL();
+    virtual void resizeGL(int w, int h);
+    virtual void paintGL();
+
+    virtual void initializeOverlayGL();
+    virtual void resizeOverlayGL(int w, int h);
+    virtual void paintOverlayGL();
+
+    void setAutoBufferSwap(bool on);
+    bool autoBufferSwap() const;
+
+    void paintEvent(QPaintEvent*);
+    void resizeEvent(QResizeEvent*);
+
+    virtual void glInit();
+    virtual void glDraw();
+    int fontDisplayListBase(const QFont & fnt, int listBase = 2000); // ### Qt 5: remove
+
+private:
+    Q_DISABLE_COPY(QGLWidget)
+
+#ifdef Q_WS_MAC
+    friend class QMacGLWindowChangeEvent;
+#endif
+    friend class QGLDrawable;
+    friend class QGLPixelBuffer;
+    friend class QGLPixelBufferPrivate;
+    friend class QGLContext;
+    friend class QGLContextPrivate;
+    friend class QGLOverlayWidget;
+    friend class QOpenGLPaintEngine;
+    friend class QGLPaintDevice;
+    friend class QGLWidgetGLPaintDevice;
+};
+
+
+//
+// QGLFormat inline functions
+//
+
+inline bool QGLFormat::doubleBuffer() const
+{
+    return testOption(QGL::DoubleBuffer);
+}
+
+inline bool QGLFormat::depth() const
+{
+    return testOption(QGL::DepthBuffer);
+}
+
+inline bool QGLFormat::rgba() const
+{
+    return testOption(QGL::Rgba);
+}
+
+inline bool QGLFormat::alpha() const
+{
+    return testOption(QGL::AlphaChannel);
+}
+
+inline bool QGLFormat::accum() const
+{
+    return testOption(QGL::AccumBuffer);
+}
+
+inline bool QGLFormat::stencil() const
+{
+    return testOption(QGL::StencilBuffer);
+}
+
+inline bool QGLFormat::stereo() const
+{
+    return testOption(QGL::StereoBuffers);
+}
+
+inline bool QGLFormat::directRendering() const
+{
+    return testOption(QGL::DirectRendering);
+}
+
+inline bool QGLFormat::hasOverlay() const
+{
+    return testOption(QGL::HasOverlay);
+}
+
+inline bool QGLFormat::sampleBuffers() const
+{
+    return testOption(QGL::SampleBuffers);
+}
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QGL_H
diff --git a/src/opengl/qgl_egl.cpp b/src/opengl/qgl_egl.cpp
new file mode 100644
index 0000000000..ef36eb94ba
--- /dev/null
+++ b/src/opengl/qgl_egl.cpp
@@ -0,0 +1,351 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtCore/qdebug.h>
+#include <QtOpenGL/qgl.h>
+#include <QtOpenGL/qglpixelbuffer.h>
+#include "qgl_p.h"
+#include "qgl_egl_p.h"
+#include "qglpixelbuffer_p.h"
+
+#ifdef Q_WS_X11
+#include <QtGui/private/qpixmap_x11_p.h>
+#endif
+
+QT_BEGIN_NAMESPACE
+
+QEglProperties *QGLContextPrivate::extraWindowSurfaceCreationProps = NULL;
+
+void qt_eglproperties_set_glformat(QEglProperties& eglProperties, const QGLFormat& glFormat)
+{
+    int redSize     = glFormat.redBufferSize();
+    int greenSize   = glFormat.greenBufferSize();
+    int blueSize    = glFormat.blueBufferSize();
+    int alphaSize   = glFormat.alphaBufferSize();
+    int depthSize   = glFormat.depthBufferSize();
+    int stencilSize = glFormat.stencilBufferSize();
+    int sampleCount = glFormat.samples();
+
+    // QGLFormat uses a magic value of -1 to indicate "don't care", even when a buffer of that
+    // type has been requested. So we must check QGLFormat's booleans too if size is -1:
+    if (glFormat.alpha() && alphaSize <= 0)
+        alphaSize = 1;
+    if (glFormat.depth() && depthSize <= 0)
+        depthSize = 1;
+    if (glFormat.stencil() && stencilSize <= 0)
+        stencilSize = 1;
+    if (glFormat.sampleBuffers() && sampleCount <= 0)
+        sampleCount = 1;
+
+    // We want to make sure 16-bit configs are chosen over 32-bit configs as they will provide
+    // the best performance. The EGL config selection algorithm is a bit stange in this regard:
+    // The selection criteria for EGL_BUFFER_SIZE is "AtLeast", so we can't use it to discard
+    // 32-bit configs completely from the selection. So it then comes to the sorting algorithm.
+    // The red/green/blue sizes have a sort priority of 3, so they are sorted by first. The sort
+    // order is special and described as "by larger _total_ number of color bits.". So EGL will
+    // put 32-bit configs in the list before the 16-bit configs. However, the spec also goes on
+    // to say "If the requested number of bits in attrib_list for a particular component is 0,
+    // then the number of bits for that component is not considered". This part of the spec also
+    // seems to imply that setting the red/green/blue bits to zero means none of the components
+    // are considered and EGL disregards the entire sorting rule. It then looks to the next
+    // highest priority rule, which is EGL_BUFFER_SIZE. Despite the selection criteria being
+    // "AtLeast" for EGL_BUFFER_SIZE, it's sort order is "smaller" meaning 16-bit configs are
+    // put in the list before 32-bit configs. So, to make sure 16-bit is preffered over 32-bit,
+    // we must set the red/green/blue sizes to zero. This has an unfortunate consequence that
+    // if the application sets the red/green/blue size to 5/6/5 on the QGLFormat, they will
+    // probably get a 32-bit config, even when there's an RGB565 config available. Oh well.
+
+    // Now normalize the values so -1 becomes 0
+    redSize   = redSize   > 0 ? redSize   : 0;
+    greenSize = greenSize > 0 ? greenSize : 0;
+    blueSize  = blueSize  > 0 ? blueSize  : 0;
+    alphaSize = alphaSize > 0 ? alphaSize : 0;
+    depthSize = depthSize > 0 ? depthSize : 0;
+    stencilSize = stencilSize > 0 ? stencilSize : 0;
+    sampleCount = sampleCount > 0 ? sampleCount : 0;
+
+    eglProperties.setValue(EGL_RED_SIZE,   redSize);
+    eglProperties.setValue(EGL_GREEN_SIZE, greenSize);
+    eglProperties.setValue(EGL_BLUE_SIZE,  blueSize);
+    eglProperties.setValue(EGL_ALPHA_SIZE, alphaSize);
+    eglProperties.setValue(EGL_DEPTH_SIZE, depthSize);
+    eglProperties.setValue(EGL_STENCIL_SIZE, stencilSize);
+    eglProperties.setValue(EGL_SAMPLES, sampleCount);
+    eglProperties.setValue(EGL_SAMPLE_BUFFERS, sampleCount ? 1 : 0);
+}
+
+// Updates "format" with the parameters of the selected configuration.
+void qt_glformat_from_eglconfig(QGLFormat& format, const EGLConfig config)
+{
+    EGLint redSize     = 0;
+    EGLint greenSize   = 0;
+    EGLint blueSize    = 0;
+    EGLint alphaSize   = 0;
+    EGLint depthSize   = 0;
+    EGLint stencilSize = 0;
+    EGLint sampleCount = 0;
+    EGLint level       = 0;
+
+    EGLDisplay display = QEgl::display();
+    eglGetConfigAttrib(display, config, EGL_RED_SIZE,     &redSize);
+    eglGetConfigAttrib(display, config, EGL_GREEN_SIZE,   &greenSize);
+    eglGetConfigAttrib(display, config, EGL_BLUE_SIZE,    &blueSize);
+    eglGetConfigAttrib(display, config, EGL_ALPHA_SIZE,   &alphaSize);
+    eglGetConfigAttrib(display, config, EGL_DEPTH_SIZE,   &depthSize);
+    eglGetConfigAttrib(display, config, EGL_STENCIL_SIZE, &stencilSize);
+    eglGetConfigAttrib(display, config, EGL_SAMPLES,      &sampleCount);
+    eglGetConfigAttrib(display, config, EGL_LEVEL,        &level);
+
+    format.setRedBufferSize(redSize);
+    format.setGreenBufferSize(greenSize);
+    format.setBlueBufferSize(blueSize);
+    format.setAlphaBufferSize(alphaSize);
+    format.setDepthBufferSize(depthSize);
+    format.setStencilBufferSize(stencilSize);
+    format.setSamples(sampleCount);
+    format.setPlane(level);
+    format.setDirectRendering(true); // All EGL contexts are direct-rendered
+    format.setRgba(true);            // EGL doesn't support colour index rendering
+    format.setStereo(false);         // EGL doesn't support stereo buffers
+    format.setAccumBufferSize(0);    // EGL doesn't support accululation buffers
+    format.setDoubleBuffer(true);    // We don't support single buffered EGL contexts
+
+    // Clear the EGL error state because some of the above may
+    // have errored out because the attribute is not applicable
+    // to the surface type.  Such errors don't matter.
+    eglGetError();
+}
+
+bool QGLFormat::hasOpenGL()
+{
+    return true;
+}
+
+void QGLContext::reset()
+{
+    Q_D(QGLContext);
+    if (!d->valid)
+        return;
+    d->cleanup();
+    doneCurrent();
+    if (d->eglContext && d->ownsEglContext) {
+        d->destroyEglSurfaceForDevice();
+        delete d->eglContext;
+    }
+    d->ownsEglContext = false;
+    d->eglContext = 0;
+    d->eglSurface = EGL_NO_SURFACE;
+    d->crWin = false;
+    d->sharing = false;
+    d->valid = false;
+    d->transpColor = QColor();
+    d->initDone = false;
+    QGLContextGroup::removeShare(this);
+}
+
+void QGLContext::makeCurrent()
+{
+    Q_D(QGLContext);
+    if (!d->valid || !d->eglContext || d->eglSurfaceForDevice() == EGL_NO_SURFACE) {
+        qWarning("QGLContext::makeCurrent(): Cannot make invalid context current");
+        return;
+    }
+
+    if (d->eglContext->makeCurrent(d->eglSurfaceForDevice())) {
+        QGLContextPrivate::setCurrentContext(this);
+        if (!d->workaroundsCached) {
+            d->workaroundsCached = true;
+            const char *renderer = reinterpret_cast<const char *>(glGetString(GL_RENDERER));
+            if (renderer && (strstr(renderer, "SGX") || strstr(renderer, "MBX"))) {
+                // PowerVR MBX/SGX chips needs to clear all buffers when starting to render
+                // a new frame, otherwise there will be a performance penalty to pay for
+                // each frame.
+                qDebug() << "Found SGX/MBX driver, enabling FullClearOnEveryFrame";
+                d->workaround_needsFullClearOnEveryFrame = true;
+
+                // Older PowerVR SGX drivers (like the one in the N900) have a
+                // bug which prevents glCopyTexSubImage2D() to work with a POT
+                // or GL_ALPHA texture bound to an FBO. The only way to
+                // identify that driver is to check the EGL version number for it.
+                const char *egl_version = eglQueryString(d->eglContext->display(), EGL_VERSION);
+
+                if (egl_version && strstr(egl_version, "1.3")) {
+                    qDebug() << "Found v1.3 driver, enabling brokenFBOReadBack";
+                    d->workaround_brokenFBOReadBack = true;
+                } else if (egl_version && strstr(egl_version, "1.4")) {
+                    qDebug() << "Found v1.4 driver, enabling brokenTexSubImage";
+                    d->workaround_brokenTexSubImage = true;
+
+                    // this is a bit complicated; 1.4 version SGX drivers from
+                    // Nokia have fixed the brokenFBOReadBack problem, but
+                    // official drivers from TI haven't, meaning that things
+                    // like the beagleboard are broken unless we hack around it
+                    // - but at the same time, we want to not reduce performance
+                    // by not enabling this elsewhere.
+                    //
+                    // so, let's check for a Nokia-specific addon, and only
+                    // enable if it isn't present.
+                    // (see MeeGo bug #5616)
+                    if (!QEgl::hasExtension("EGL_NOK_image_shared")) {
+                        // no Nokia extension, this is probably a standard SGX
+                        // driver, so enable the workaround
+                        qDebug() << "Found non-Nokia v1.4 driver, enabling brokenFBOReadBack";
+                        d->workaround_brokenFBOReadBack = true;
+                    }
+                }
+            }
+        }
+    }
+}
+
+void QGLContext::doneCurrent()
+{
+    Q_D(QGLContext);
+    if (d->eglContext)
+        d->eglContext->doneCurrent();
+
+    QGLContextPrivate::setCurrentContext(0);
+}
+
+
+void QGLContext::swapBuffers() const
+{
+    Q_D(const QGLContext);
+    if (!d->valid || !d->eglContext)
+        return;
+
+    d->eglContext->swapBuffers(d->eglSurfaceForDevice());
+}
+
+void QGLContextPrivate::destroyEglSurfaceForDevice()
+{
+    if (eglSurface != EGL_NO_SURFACE) {
+#if defined(Q_WS_X11) || defined(Q_OS_SYMBIAN)
+        // Make sure we don't call eglDestroySurface on a surface which
+        // was created for a different winId. This applies only to QGLWidget
+        // paint device, so make sure this is the one we're operating on
+        // (as opposed to a QGLWindowSurface use case).
+        if (paintDevice && paintDevice->devType() == QInternal::Widget) {
+            QWidget *w = static_cast<QWidget *>(paintDevice);
+            if (QGLWidget *wgl = qobject_cast<QGLWidget *>(w)) {
+                if (wgl->d_func()->eglSurfaceWindowId != wgl->winId()) {
+                    qWarning("WARNING: Potential EGL surface leak! Not destroying surface.");
+                    eglSurface = EGL_NO_SURFACE;
+                    return;
+                }
+            }
+        }
+#endif
+        eglDestroySurface(eglContext->display(), eglSurface);
+        eglSurface = EGL_NO_SURFACE;
+    }
+}
+
+EGLSurface QGLContextPrivate::eglSurfaceForDevice() const
+{
+    // If a QPixmapData had to create the QGLContext, we don't have a paintDevice
+    if (!paintDevice)
+        return eglSurface;
+
+#ifdef Q_WS_X11
+    if (paintDevice->devType() == QInternal::Pixmap) {
+        QPixmapData *pmd = static_cast<QPixmap*>(paintDevice)->data_ptr().data();
+        if (pmd->classId() == QPixmapData::X11Class) {
+            QX11PixmapData* x11PixmapData = static_cast<QX11PixmapData*>(pmd);
+            return (EGLSurface)x11PixmapData->gl_surface;
+        }
+    }
+#endif
+
+    if (paintDevice->devType() == QInternal::Pbuffer) {
+        QGLPixelBuffer* pbuf = static_cast<QGLPixelBuffer*>(paintDevice);
+        return pbuf->d_func()->pbuf;
+    }
+
+    return eglSurface;
+}
+
+void QGLContextPrivate::swapRegion(const QRegion &region)
+{
+    if (!valid || !eglContext)
+        return;
+
+    eglContext->swapBuffersRegion2NOK(eglSurfaceForDevice(), &region);
+}
+
+void QGLContextPrivate::setExtraWindowSurfaceCreationProps(QEglProperties *props)
+{
+    extraWindowSurfaceCreationProps = props;
+}
+
+void QGLWidget::setMouseTracking(bool enable)
+{
+    QWidget::setMouseTracking(enable);
+}
+
+QColor QGLContext::overlayTransparentColor() const
+{
+    return d_func()->transpColor;
+}
+
+uint QGLContext::colorIndex(const QColor &c) const
+{
+    Q_UNUSED(c);
+    return 0;
+}
+
+void QGLContext::generateFontDisplayLists(const QFont & fnt, int listBase)
+{
+    Q_UNUSED(fnt);
+    Q_UNUSED(listBase);
+}
+
+void *QGLContext::getProcAddress(const QString &proc) const
+{
+    return (void*)eglGetProcAddress(reinterpret_cast<const char *>(proc.toLatin1().data()));
+}
+
+bool QGLWidgetPrivate::renderCxPm(QPixmap*)
+{
+    return false;
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/qgl_egl_p.h b/src/opengl/qgl_egl_p.h
new file mode 100644
index 0000000000..72a84c51f2
--- /dev/null
+++ b/src/opengl/qgl_egl_p.h
@@ -0,0 +1,69 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QGL_EGL_P_H
+#define QGL_EGL_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of the QGLWidget class.  This header file may change from
+// version to version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtGui/private/qegl_p.h>
+#include <QtGui/private/qeglcontext_p.h>
+#include <QtGui/private/qeglproperties_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QGLFormat;
+
+void qt_eglproperties_set_glformat(QEglProperties& props, const QGLFormat& format);
+void qt_glformat_from_eglconfig(QGLFormat& format, const EGLConfig config);
+
+QT_END_NAMESPACE
+
+#endif // QGL_EGL_P_H
diff --git a/src/opengl/qgl_mac.mm b/src/opengl/qgl_mac.mm
new file mode 100644
index 0000000000..370861073c
--- /dev/null
+++ b/src/opengl/qgl_mac.mm
@@ -0,0 +1,996 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qgl.h"
+
+// There are functions that are deprecated in 10.5, but really there's no way around them
+// for Carbon, so just undefine them.
+#undef DEPRECATED_ATTRIBUTE
+#define DEPRECATED_ATTRIBUTE
+#if defined(Q_WS_MAC)
+#ifndef QT_MAC_USE_COCOA
+#ifdef qDebug
+#    undef qDebug
+#    include <AGL/agl.h>
+#    include <AGL/aglRenderers.h>
+#    include <OpenGL/gl.h>
+#    ifdef QT_NO_DEBUG
+#        define qDebug qt_noop(),1?(void)0:qDebug
+#    endif
+#else
+#    include <AGL/agl.h>
+#    include <AGL/aglRenderers.h>
+#    include <OpenGL/gl.h>
+#endif
+#else
+#include <private/qcocoaview_mac_p.h>
+#endif
+
+
+#include <OpenGL/gl.h>
+#include <CoreServices/CoreServices.h>
+#include <private/qfont_p.h>
+#include <private/qfontengine_p.h>
+#include <private/qgl_p.h>
+#include <private/qpaintengine_opengl_p.h>
+#include <private/qt_mac_p.h>
+#include <qpixmap.h>
+#include <qtimer.h>
+#include <qapplication.h>
+#include <qstack.h>
+#include <qdesktopwidget.h>
+#include <qdebug.h>
+
+QT_BEGIN_NAMESPACE
+#ifdef QT_MAC_USE_COCOA
+QT_END_NAMESPACE
+
+QT_FORWARD_DECLARE_CLASS(QWidget)
+QT_FORWARD_DECLARE_CLASS(QWidgetPrivate)
+QT_FORWARD_DECLARE_CLASS(QGLWidgetPrivate)
+
+QT_BEGIN_NAMESPACE
+
+void *qt_current_nsopengl_context()
+{
+    return [NSOpenGLContext currentContext];
+}
+
+static GLint attribValue(NSOpenGLPixelFormat *fmt, NSOpenGLPixelFormatAttribute attrib)
+{
+    GLint res;
+    [fmt getValues:&res forAttribute:attrib forVirtualScreen:0];
+    return res;
+}
+
+static int def(int val, int defVal)
+{
+    return val != -1 ? val : defVal;
+}
+#else
+QRegion qt_mac_get_widget_rgn(const QWidget *widget);
+#endif
+
+extern quint32 *qt_mac_pixmap_get_base(const QPixmap *);
+extern int qt_mac_pixmap_get_bytes_per_line(const QPixmap *);
+extern RgnHandle qt_mac_get_rgn(); //qregion_mac.cpp
+extern void qt_mac_dispose_rgn(RgnHandle); //qregion_mac.cpp
+extern QRegion qt_mac_convert_mac_region(RgnHandle); //qregion_mac.cpp
+extern void qt_mac_to_pascal_string(QString s, Str255 str, TextEncoding encoding=0, int len=-1);  //qglobal.cpp
+
+/*
+    QGLTemporaryContext implementation
+*/
+
+class QGLTemporaryContextPrivate
+{
+public:
+#ifndef QT_MAC_USE_COCOA
+    AGLContext ctx;
+#else
+    NSOpenGLContext *ctx;
+#endif
+};
+
+QGLTemporaryContext::QGLTemporaryContext(bool, QWidget *)
+    : d(new QGLTemporaryContextPrivate)
+{
+    d->ctx = 0;
+#ifndef QT_MAC_USE_COCOA
+    GLint attribs[] = {AGL_RGBA, AGL_NONE};
+    AGLPixelFormat fmt = aglChoosePixelFormat(0, 0, attribs);
+    if (!fmt) {
+        qDebug("QGLTemporaryContext: Couldn't find any RGB visuals");
+        return;
+    }
+    d->ctx = aglCreateContext(fmt, 0);
+    if (!d->ctx)
+        qDebug("QGLTemporaryContext: Unable to create context");
+    else
+        aglSetCurrentContext(d->ctx);
+    aglDestroyPixelFormat(fmt);
+#else
+    QMacCocoaAutoReleasePool pool;
+    NSOpenGLPixelFormatAttribute attribs[] = { 0 };
+    NSOpenGLPixelFormat *fmt = [[NSOpenGLPixelFormat alloc] initWithAttributes:attribs];
+    if (!fmt) {
+        qWarning("QGLTemporaryContext: Cannot find any visuals");
+        return;
+    }
+
+    d->ctx = [[NSOpenGLContext alloc] initWithFormat:fmt shareContext:0];
+    if (!d->ctx)
+        qWarning("QGLTemporaryContext: Cannot create context");
+    else
+        [d->ctx makeCurrentContext];
+    [fmt release];
+#endif
+}
+
+QGLTemporaryContext::~QGLTemporaryContext()
+{
+    if (d->ctx) {
+#ifndef QT_MAC_USE_COCOA
+        aglSetCurrentContext(0);
+        aglDestroyContext(d->ctx);
+#else
+        [NSOpenGLContext clearCurrentContext];
+        [d->ctx release];
+#endif
+    }
+}
+
+bool QGLFormat::hasOpenGL()
+{
+    return true;
+}
+
+bool QGLFormat::hasOpenGLOverlays()
+{
+    return false;
+}
+
+bool QGLContext::chooseContext(const QGLContext *shareContext)
+{
+    QMacCocoaAutoReleasePool pool;
+    Q_D(QGLContext);
+    d->cx = 0;
+    d->vi = chooseMacVisual(0);
+    if (!d->vi)
+        return false;
+
+#ifndef QT_MAC_USE_COCOA
+    AGLPixelFormat fmt = (AGLPixelFormat)d->vi;
+    GLint res;
+    aglDescribePixelFormat(fmt, AGL_LEVEL, &res);
+    d->glFormat.setPlane(res);
+    if (deviceIsPixmap())
+        res = 0;
+    else
+        aglDescribePixelFormat(fmt, AGL_DOUBLEBUFFER, &res);
+    d->glFormat.setDoubleBuffer(res);
+    aglDescribePixelFormat(fmt, AGL_DEPTH_SIZE, &res);
+    d->glFormat.setDepth(res);
+    if (d->glFormat.depth())
+        d->glFormat.setDepthBufferSize(res);
+    aglDescribePixelFormat(fmt, AGL_RGBA, &res);
+    d->glFormat.setRgba(res);
+    aglDescribePixelFormat(fmt, AGL_RED_SIZE, &res);
+    d->glFormat.setRedBufferSize(res);
+    aglDescribePixelFormat(fmt, AGL_GREEN_SIZE, &res);
+    d->glFormat.setGreenBufferSize(res);
+    aglDescribePixelFormat(fmt, AGL_BLUE_SIZE, &res);
+    d->glFormat.setBlueBufferSize(res);
+    aglDescribePixelFormat(fmt, AGL_ALPHA_SIZE, &res);
+    d->glFormat.setAlpha(res);
+    if (d->glFormat.alpha())
+        d->glFormat.setAlphaBufferSize(res);
+    aglDescribePixelFormat(fmt, AGL_ACCUM_RED_SIZE, &res);
+    // Bug in Apple OpenGL (rdr://5015603), when we don't have an accumulation
+    // buffer, it still claims that we have a 16-bit one (which is pretty rare).
+    // So, we just assume we can never have a buffer that small.
+    d->glFormat.setAccum(res > 5);
+    if (d->glFormat.accum())
+        d->glFormat.setAccumBufferSize(res);
+    aglDescribePixelFormat(fmt, AGL_STENCIL_SIZE, &res);
+    d->glFormat.setStencil(res);
+    if (d->glFormat.stencil())
+        d->glFormat.setStencilBufferSize(res);
+    aglDescribePixelFormat(fmt, AGL_STEREO, &res);
+    d->glFormat.setStereo(res);
+    aglDescribePixelFormat(fmt, AGL_SAMPLE_BUFFERS_ARB, &res);
+    d->glFormat.setSampleBuffers(res);
+    if (d->glFormat.sampleBuffers()) {
+        aglDescribePixelFormat(fmt, AGL_SAMPLES_ARB, &res);
+        d->glFormat.setSamples(res);
+    }
+#else
+    NSOpenGLPixelFormat *fmt = static_cast<NSOpenGLPixelFormat *>(d->vi);
+
+    d->glFormat = QGLFormat();
+
+    // ### make sure to reset other options
+    d->glFormat.setDoubleBuffer(attribValue(fmt, NSOpenGLPFADoubleBuffer));
+
+    int depthSize = attribValue(fmt, NSOpenGLPFADepthSize);
+    d->glFormat.setDepth(depthSize > 0);
+    if (depthSize > 0)
+        d->glFormat.setDepthBufferSize(depthSize);
+
+    int alphaSize = attribValue(fmt, NSOpenGLPFAAlphaSize);
+    d->glFormat.setAlpha(alphaSize > 0);
+    if (alphaSize > 0)
+        d->glFormat.setAlphaBufferSize(alphaSize);
+
+    int accumSize = attribValue(fmt, NSOpenGLPFAAccumSize);
+    d->glFormat.setAccum(accumSize > 0);
+    if (accumSize > 0)
+        d->glFormat.setAccumBufferSize(accumSize);
+
+    int stencilSize = attribValue(fmt, NSOpenGLPFAStencilSize);
+    d->glFormat.setStencil(stencilSize > 0);
+    if (stencilSize > 0)
+        d->glFormat.setStencilBufferSize(stencilSize);
+
+    d->glFormat.setStereo(attribValue(fmt, NSOpenGLPFAStereo));
+
+    int sampleBuffers = attribValue(fmt, NSOpenGLPFASampleBuffers);
+    d->glFormat.setSampleBuffers(sampleBuffers);
+    if (sampleBuffers > 0)
+        d->glFormat.setSamples(attribValue(fmt, NSOpenGLPFASamples));
+#endif
+    if (shareContext && (!shareContext->isValid() || !shareContext->d_func()->cx)) {
+        qWarning("QGLContext::chooseContext: Cannot share with invalid context");
+        shareContext = 0;
+    }
+
+    // sharing between rgba and color-index will give wrong colors
+    if (shareContext && (format().rgba() != shareContext->format().rgba()))
+        shareContext = 0;
+
+#ifndef QT_MAC_USE_COCOA
+    AGLContext ctx = aglCreateContext(fmt, (AGLContext) (shareContext ? shareContext->d_func()->cx : 0));
+#else
+    NSOpenGLContext *ctx = [[NSOpenGLContext alloc] initWithFormat:fmt
+        shareContext:(shareContext ? static_cast<NSOpenGLContext *>(shareContext->d_func()->cx)
+                                   : 0)];
+#endif
+    if (!ctx) {
+#ifndef QT_MAC_USE_COCOA
+        GLenum err = aglGetError();
+        if (err == AGL_BAD_MATCH || err == AGL_BAD_CONTEXT) {
+            if (shareContext && shareContext->d_func()->cx) {
+                qWarning("QGLContext::chooseContext(): Context sharing mismatch!");
+                if (!(ctx = aglCreateContext(fmt, 0)))
+                    return false;
+                shareContext = 0;
+            }
+        }
+#else
+        if (shareContext) {
+            ctx = [[NSOpenGLContext alloc] initWithFormat:fmt shareContext:0];
+            if (ctx) {
+                qWarning("QGLContext::chooseContext: Context sharing mismatch");
+                shareContext = 0;
+            }
+        }
+#endif
+        if (!ctx) {
+            qWarning("QGLContext::chooseContext: Unable to create QGLContext");
+            return false;
+        }
+    }
+    d->cx = ctx;
+    if (shareContext && shareContext->d_func()->cx) {
+        QGLContext *share = const_cast<QGLContext *>(shareContext);
+        d->sharing = true;
+        share->d_func()->sharing = true;
+    }
+    if (deviceIsPixmap())
+        updatePaintDevice();
+
+    // vblank syncing
+    GLint interval = d->reqFormat.swapInterval();
+    if (interval != -1) {
+#ifndef QT_MAC_USE_COCOA
+        aglSetInteger((AGLContext)d->cx, AGL_SWAP_INTERVAL, &interval);
+        if (interval != 0)
+            aglEnable((AGLContext)d->cx, AGL_SWAP_INTERVAL);
+        else
+            aglDisable((AGLContext)d->cx, AGL_SWAP_INTERVAL);
+#else
+        [ctx setValues:&interval forParameter:NSOpenGLCPSwapInterval];
+#endif
+    }
+#ifndef QT_MAC_USE_COCOA
+    aglGetInteger((AGLContext)d->cx, AGL_SWAP_INTERVAL, &interval);
+#else
+    [ctx getValues:&interval forParameter:NSOpenGLCPSwapInterval];
+#endif
+    d->glFormat.setSwapInterval(interval);
+    return true;
+}
+
+void *QGLContextPrivate::tryFormat(const QGLFormat &format)
+{
+    static const int Max = 40;
+#ifndef QT_MAC_USE_COCOA
+    GLint attribs[Max], cnt = 0;
+    bool device_is_pixmap = (paintDevice->devType() == QInternal::Pixmap);
+
+    attribs[cnt++] = AGL_RGBA;
+    attribs[cnt++] = AGL_BUFFER_SIZE;
+    attribs[cnt++] = device_is_pixmap ? static_cast<QPixmap *>(paintDevice)->depth() : 32;
+    attribs[cnt++] = AGL_LEVEL;
+    attribs[cnt++] = format.plane();
+
+    if (format.redBufferSize() != -1) {
+        attribs[cnt++] = AGL_RED_SIZE;
+        attribs[cnt++] = format.redBufferSize();
+    }
+    if (format.greenBufferSize() != -1) {
+        attribs[cnt++] = AGL_GREEN_SIZE;
+        attribs[cnt++] = format.greenBufferSize();
+    }
+    if (format.blueBufferSize() != -1) {
+        attribs[cnt++] = AGL_BLUE_SIZE;
+        attribs[cnt++] = format.blueBufferSize();
+    }
+    if (device_is_pixmap) {
+        attribs[cnt++] = AGL_PIXEL_SIZE;
+        attribs[cnt++] = static_cast<QPixmap *>(paintDevice)->depth();
+        attribs[cnt++] = AGL_OFFSCREEN;
+        if (!format.alpha()) {
+            attribs[cnt++] = AGL_ALPHA_SIZE;
+            attribs[cnt++] = 8;
+        }
+    } else {
+        if (format.doubleBuffer())
+            attribs[cnt++] = AGL_DOUBLEBUFFER;
+    }
+
+    if (format.stereo())
+        attribs[cnt++] = AGL_STEREO;
+    if (format.alpha()) {
+        attribs[cnt++] = AGL_ALPHA_SIZE;
+        attribs[cnt++] = format.alphaBufferSize() == -1 ? 8 : format.alphaBufferSize();
+    }
+    if (format.stencil()) {
+        attribs[cnt++] = AGL_STENCIL_SIZE;
+        attribs[cnt++] = format.stencilBufferSize() == -1 ? 8 : format.stencilBufferSize();
+    }
+    if (format.depth()) {
+        attribs[cnt++] = AGL_DEPTH_SIZE;
+        attribs[cnt++] = format.depthBufferSize() == -1 ? 32 : format.depthBufferSize();
+    }
+    if (format.accum()) {
+        attribs[cnt++] = AGL_ACCUM_RED_SIZE;
+        attribs[cnt++] = format.accumBufferSize() == -1 ? 1 : format.accumBufferSize();
+        attribs[cnt++] = AGL_ACCUM_BLUE_SIZE;
+        attribs[cnt++] = format.accumBufferSize() == -1 ? 1 : format.accumBufferSize();
+        attribs[cnt++] = AGL_ACCUM_GREEN_SIZE;
+        attribs[cnt++] = format.accumBufferSize() == -1 ? 1 : format.accumBufferSize();
+        attribs[cnt++] = AGL_ACCUM_ALPHA_SIZE;
+        attribs[cnt++] = format.accumBufferSize() == -1 ? 1 : format.accumBufferSize();
+    }
+    if (format.sampleBuffers()) {
+        attribs[cnt++] = AGL_SAMPLE_BUFFERS_ARB;
+        attribs[cnt++] = 1;
+        attribs[cnt++] = AGL_SAMPLES_ARB;
+        attribs[cnt++] = format.samples() == -1 ? 4 : format.samples();
+    }
+
+    attribs[cnt] = AGL_NONE;
+    Q_ASSERT(cnt < Max);
+    return aglChoosePixelFormat(0, 0, attribs);
+#else
+    NSOpenGLPixelFormatAttribute attribs[Max];
+    int cnt = 0;
+    int devType = paintDevice->devType();
+    bool device_is_pixmap = (devType == QInternal::Pixmap);
+    int depth = device_is_pixmap ? static_cast<QPixmap *>(paintDevice)->depth() : 32;
+
+    attribs[cnt++] = NSOpenGLPFAColorSize;
+    attribs[cnt++] = depth;
+
+    if (device_is_pixmap) {
+        attribs[cnt++] = NSOpenGLPFAOffScreen;
+    } else {
+        if (format.doubleBuffer())
+            attribs[cnt++] = NSOpenGLPFADoubleBuffer;
+    }
+    if (glFormat.stereo())
+        attribs[cnt++] = NSOpenGLPFAStereo;
+    if (device_is_pixmap || format.alpha()) {
+        attribs[cnt++] = NSOpenGLPFAAlphaSize;
+        attribs[cnt++] = def(format.alphaBufferSize(), 8);
+    }
+    if (format.stencil()) {
+        attribs[cnt++] = NSOpenGLPFAStencilSize;
+        attribs[cnt++] = def(format.stencilBufferSize(), 8);
+    }
+    if (format.depth()) {
+        attribs[cnt++] = NSOpenGLPFADepthSize;
+        attribs[cnt++] = def(format.depthBufferSize(), 32);
+    }
+    if (format.accum()) {
+        attribs[cnt++] = NSOpenGLPFAAccumSize;
+        attribs[cnt++] = def(format.accumBufferSize(), 1);
+    }
+    if (format.sampleBuffers()) {
+        attribs[cnt++] = NSOpenGLPFASampleBuffers;
+        attribs[cnt++] = 1;
+        attribs[cnt++] = NSOpenGLPFASamples;
+        attribs[cnt++] = def(format.samples(), 4);
+    }
+
+    if (format.directRendering())
+        attribs[cnt++] = NSOpenGLPFAAccelerated;
+
+    if (devType == QInternal::Pbuffer)
+        attribs[cnt++] = NSOpenGLPFAPixelBuffer;
+
+    attribs[cnt] = 0;
+    Q_ASSERT(cnt < Max);
+    return [[NSOpenGLPixelFormat alloc] initWithAttributes:attribs];
+#endif
+}
+
+void QGLContextPrivate::clearDrawable()
+{
+    [static_cast<NSOpenGLContext *>(cx) clearDrawable];
+}
+
+/*!
+    \bold{Mac OS X only:} This virtual function tries to find a visual that
+    matches the format, reducing the demands if the original request
+    cannot be met.
+
+    The algorithm for reducing the demands of the format is quite
+    simple-minded, so override this method in your subclass if your
+    application has spcific requirements on visual selection.
+
+    The \a handle argument is always zero and is not used
+
+    \sa chooseContext()
+*/
+
+void *QGLContext::chooseMacVisual(GDHandle /* handle */)
+{
+    Q_D(QGLContext);
+
+    void *fmt = d->tryFormat(d->glFormat);
+    if (!fmt && d->glFormat.stereo()) {
+        d->glFormat.setStereo(false);
+        fmt = d->tryFormat(d->glFormat);
+    }
+    if (!fmt && d->glFormat.sampleBuffers()) {
+        d->glFormat.setSampleBuffers(false);
+        fmt = d->tryFormat(d->glFormat);
+    }
+    if (!fmt)
+        qWarning("QGLContext::chooseMacVisual: Unable to choose a pixel format");
+    return fmt;
+}
+
+void QGLContext::reset()
+{
+    Q_D(QGLContext);
+    if (!d->valid)
+        return;
+    d->cleanup();
+    doneCurrent();
+#ifndef QT_MAC_USE_COCOA
+    if (d->cx)
+        aglDestroyContext((AGLContext)d->cx);
+#else
+    QMacCocoaAutoReleasePool pool;
+    [static_cast<NSOpenGLContext *>(d->cx) release];
+#endif
+    d->cx = 0;
+#ifndef QT_MAC_USE_COCOA
+    if (d->vi)
+        aglDestroyPixelFormat((AGLPixelFormat)d->vi);
+#else
+    [static_cast<NSOpenGLPixelFormat *>(d->vi) release];
+#endif
+    d->vi = 0;
+    d->crWin = false;
+    d->sharing = false;
+    d->valid = false;
+    d->transpColor = QColor();
+    d->initDone = false;
+    QGLContextGroup::removeShare(this);
+}
+
+void QGLContext::makeCurrent()
+{
+    Q_D(QGLContext);
+
+    if (!d->valid) {
+        qWarning("QGLContext::makeCurrent: Cannot make invalid context current");
+        return;
+    }
+#ifndef QT_MAC_USE_COCOA
+    aglSetCurrentContext((AGLContext)d->cx);
+    if (d->update)
+        updatePaintDevice();
+#else
+    [static_cast<NSOpenGLContext *>(d->cx) makeCurrentContext];
+#endif
+    QGLContextPrivate::setCurrentContext(this);
+}
+
+#ifndef QT_MAC_USE_COCOA
+/*
+    Returns the effective scale factor for a widget. For this value to be
+    different than 1, the following must be true:
+    - The system scale factor must be greater than 1.
+    - The widget window must have WA_MacFrameworkScaled set.
+*/
+float qt_mac_get_scale_factor(QWidget *widget)
+{
+    if (!widget | !widget->window())
+        return 1;
+
+    if (widget->window()->testAttribute(Qt::WA_MacFrameworkScaled) == false)
+        return 1;
+
+    float systemScale = QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4 ? HIGetScaleFactor() : 1;
+    if (systemScale == float(1))
+        return 1;
+
+    return systemScale;
+}
+#endif
+
+/*! \internal
+*/
+void QGLContext::updatePaintDevice()
+{
+    Q_D(QGLContext);
+#ifndef QT_MAC_USE_COCOA
+    d->update = false;
+    if (d->paintDevice->devType() == QInternal::Widget) {
+        //get control information
+        QWidget *w = (QWidget *)d->paintDevice;
+        HIViewRef hiview = (HIViewRef)w->winId();
+        WindowRef window = HIViewGetWindow(hiview);
+#ifdef DEBUG_OPENGL_REGION_UPDATE
+        static int serial_no_gl = 0;
+        qDebug("[%d] %p setting on %s::%s %p/%p [%s]", ++serial_no_gl, w,
+                w->metaObject()->className(), w->objectName().toLatin1().constData(),
+                hiview, window, w->handle() ? "Inside" : "Outside");
+#endif
+
+        //update drawable
+        if (0 && w->isWindow() && w->isFullScreen()) {
+            aglSetDrawable((AGLContext)d->cx, 0);
+            aglSetFullScreen((AGLContext)d->cx, w->width(), w->height(), 0, QApplication::desktop()->screenNumber(w));
+            w->hide();
+        } else {
+            AGLDrawable old_draw = aglGetDrawable((AGLContext)d->cx), new_draw = GetWindowPort(window);
+            if (old_draw != new_draw)
+                aglSetDrawable((AGLContext)d->cx, new_draw);
+        }
+
+        float scale  = qt_mac_get_scale_factor(w);
+
+        if (!w->isWindow()) {
+            QRegion clp = qt_mac_get_widget_rgn(w); //get drawable area
+
+#ifdef DEBUG_OPENGL_REGION_UPDATE
+            if (clp.isEmpty()) {
+                qDebug("  Empty area!");
+            } else {
+                QVector<QRect> rs = clp.rects();
+                for(int i = 0; i < rs.count(); i++)
+                    qDebug("  %d %d %d %d", rs[i].x(), rs[i].y(), rs[i].width(), rs[i].height());
+            }
+#endif
+            //update the clip
+            if (!aglIsEnabled((AGLContext)d->cx, AGL_BUFFER_RECT))
+                aglEnable((AGLContext)d->cx, AGL_BUFFER_RECT);
+            if (clp.isEmpty()) {
+                GLint offs[4] = { 0, 0, 0, 0 };
+                aglSetInteger((AGLContext)d->cx, AGL_BUFFER_RECT, offs);
+                if (aglIsEnabled((AGLContext)d->cx, AGL_CLIP_REGION))
+                    aglDisable((AGLContext)d->cx, AGL_CLIP_REGION);
+            } else {
+                HIPoint origin = { 0., 0. };
+                HIViewConvertPoint(&origin, HIViewRef(w->winId()), 0);
+                const GLint offs[4] = { qRound(origin.x),
+                    w->window()->frameGeometry().height() * scale
+                        - (qRound(origin.y) + w->height() * scale),
+                    w->width() * scale, w->height() * scale};
+
+                RgnHandle region = clp.handle(true);
+
+                if (scale != float(1)) {
+                    // Sacle the clip region by the scale factor
+                    Rect regionBounds;
+                    GetRegionBounds(region, &regionBounds);
+                    Rect regionBoundsDest = regionBounds;
+                    regionBoundsDest.bottom *= scale;
+                    regionBoundsDest.right *= scale;
+                    MapRgn(region, &regionBounds, &regionBoundsDest);
+                }
+
+                aglSetInteger((AGLContext)d->cx, AGL_BUFFER_RECT, offs);
+                aglSetInteger((AGLContext)d->cx, AGL_CLIP_REGION, (const GLint *)region);
+                if (!aglIsEnabled((AGLContext)d->cx, AGL_CLIP_REGION))
+                    aglEnable((AGLContext)d->cx, AGL_CLIP_REGION);
+            }
+        } else {
+            // Set the buffer rect for top-level gl contexts when scaled.
+            if (scale != float(1)) {
+                aglEnable((AGLContext)d->cx, AGL_BUFFER_RECT);
+                const GLint offs[4] = { 0, 0,  w->width() * scale , w->height() * scale};
+                aglSetInteger((AGLContext)d->cx, AGL_BUFFER_RECT, offs);
+            }
+        }
+    } else if (d->paintDevice->devType() == QInternal::Pixmap) {
+        QPixmap *pm = reinterpret_cast<QPixmap *>(d->paintDevice);
+
+        unsigned long qdformat = k32ARGBPixelFormat;
+        if (QSysInfo::ByteOrder == QSysInfo::LittleEndian)
+            qdformat = k32BGRAPixelFormat;
+        Rect rect;
+        SetRect(&rect, 0, 0, pm->width(), pm->height());
+
+        GWorldPtr gworld;
+        NewGWorldFromPtr(&gworld, qdformat, &rect, 0, 0, 0,
+                         reinterpret_cast<char *>(qt_mac_pixmap_get_base(pm)), 
+                         qt_mac_pixmap_get_bytes_per_line(pm));
+
+        PixMapHandle pixmapHandle = GetGWorldPixMap(gworld);
+        aglSetOffScreen(reinterpret_cast<AGLContext>(d->cx), pm->width(), pm->height(),
+                        GetPixRowBytes(pixmapHandle), GetPixBaseAddr(pixmapHandle));
+    } else {
+        qWarning("QGLContext::updatePaintDevice(): Not sure how to render OpenGL on this device!");
+    }
+    aglUpdateContext((AGLContext)d->cx);
+
+#else
+    QMacCocoaAutoReleasePool pool;
+
+    if (d->paintDevice->devType() == QInternal::Widget) {
+        //get control information
+        QWidget *w = (QWidget *)d->paintDevice;
+        NSView *view = qt_mac_nativeview_for(w);
+
+        // Trying to attach the GL context to the NSView will fail with
+        // "invalid drawable" if done too soon, but we have to make sure
+        // the connection is made before the first paint event. Using
+        // the NSView do to this check fails as the NSView is visible
+        // before it's safe to connect, and using the NSWindow fails as
+        // the NSWindow will become visible after the first paint event.
+        // This leaves us with the QWidget, who's visible state seems
+        // to match the point in time when it's safe to connect.
+        if (!w || !w->isVisible())
+            return; // Not safe to attach GL context to view yet
+
+        if ([static_cast<NSOpenGLContext *>(d->cx) view] != view && ![view isHidden])
+            [static_cast<NSOpenGLContext *>(d->cx) setView:view];
+    } else if (d->paintDevice->devType() == QInternal::Pixmap) {
+        const QPixmap *pm = static_cast<const QPixmap *>(d->paintDevice);
+        [static_cast<NSOpenGLContext *>(d->cx) setOffScreen:qt_mac_pixmap_get_base(pm)
+                                                      width:pm->width()
+                                                     height:pm->height()
+                                                   rowbytes:qt_mac_pixmap_get_bytes_per_line(pm)];
+    } else {
+        qWarning("QGLContext::updatePaintDevice: Not sure how to render OpenGL on this device");
+    }
+    [static_cast<NSOpenGLContext *>(d->cx) update];
+#endif
+}
+
+void QGLContext::doneCurrent()
+{
+
+    if (
+#ifndef QT_MAC_USE_COCOA
+        aglGetCurrentContext() != (AGLContext) d_func()->cx
+#else
+        [NSOpenGLContext currentContext] != d_func()->cx
+#endif
+       )
+        return;
+
+    QGLContextPrivate::setCurrentContext(0);
+#ifndef QT_MAC_USE_COCOA
+    aglSetCurrentContext(0);
+#else
+    [NSOpenGLContext clearCurrentContext];
+#endif
+}
+
+void QGLContext::swapBuffers() const
+{
+    Q_D(const QGLContext);
+    if (!d->valid)
+        return;
+#ifndef QT_MAC_USE_COCOA
+    aglSwapBuffers((AGLContext)d->cx);
+#else
+    [static_cast<NSOpenGLContext *>(d->cx) flushBuffer];
+#endif
+}
+
+QColor QGLContext::overlayTransparentColor() const
+{
+    return QColor(0, 0, 0);                // Invalid color
+}
+
+#ifndef QT_MAC_USE_COCOA
+static QColor cmap[256];
+static bool cmap_init = false;
+#endif
+uint QGLContext::colorIndex(const QColor &c) const
+{
+#ifndef QT_MAC_USE_COCOA
+    int ret = -1;
+    if(!cmap_init) {
+        cmap_init = true;
+        for(int i = 0; i < 256; i++)
+            cmap[i] = QColor();
+    } else {
+        for(int i = 0; i < 256; i++) {
+            if(cmap[i].isValid() && cmap[i] == c) {
+                ret = i;
+                break;
+            }
+        }
+    }
+    if(ret == -1) {
+        for(ret = 0; ret < 256; ret++)
+            if(!cmap[ret].isValid())
+                break;
+        if(ret == 256) {
+            ret = -1;
+            qWarning("QGLContext::colorIndex(): Internal error!");
+        } else {
+            cmap[ret] = c;
+
+            GLint vals[4];
+            vals[0] = ret;
+            vals[1] = c.red();
+            vals[2] = c.green();
+            vals[3] = c.blue();
+            aglSetInteger((AGLContext)d_func()->cx, AGL_COLORMAP_ENTRY, vals);
+        }
+    }
+    return (uint)(ret == -1 ? 0 : ret);
+#else
+    Q_UNUSED(c);
+    return 0;
+#endif
+}
+
+void QGLContext::generateFontDisplayLists(const QFont & /* fnt */, int /* listBase */)
+{
+}
+
+static CFBundleRef qt_getOpenGLBundle()
+{
+    CFBundleRef bundle = 0;
+    CFStringRef urlString = QCFString::toCFStringRef(QLatin1String("/System/Library/Frameworks/OpenGL.framework"));
+    QCFType<CFURLRef> url = CFURLCreateWithFileSystemPath(kCFAllocatorDefault,
+                 urlString, kCFURLPOSIXPathStyle, false);
+    if (url)
+        bundle = CFBundleCreate(kCFAllocatorDefault, url);
+    CFRelease(urlString);
+    return bundle;
+}
+
+void *QGLContext::getProcAddress(const QString &proc) const
+{
+    CFStringRef procName = QCFString(proc).toCFStringRef(proc);
+    void *result = CFBundleGetFunctionPointerForName(QCFType<CFBundleRef>(qt_getOpenGLBundle()),
+                                             procName);
+    CFRelease(procName);
+    return result;
+}
+#ifndef QT_MAC_USE_COCOA
+/*****************************************************************************
+  QGLWidget AGL-specific code
+ *****************************************************************************/
+
+/****************************************************************************
+  Hacks to glue AGL to an HIView
+ ***************************************************************************/
+QRegion qt_mac_get_widget_rgn(const QWidget *widget)
+{
+    if(!widget->isVisible() || widget->isMinimized())
+        return QRegion();
+    const QRect wrect = QRect(qt_mac_posInWindow(widget), widget->size());
+    if(!wrect.isValid())
+        return QRegion();
+
+    RgnHandle macr = qt_mac_get_rgn();
+    GetControlRegion((HIViewRef)widget->winId(), kControlStructureMetaPart, macr);
+    OffsetRgn(macr, wrect.x(), wrect.y());
+    QRegion ret = qt_mac_convert_mac_region(macr);
+
+    QPoint clip_pos = wrect.topLeft();
+    for(const QWidget *last_clip = 0, *clip = widget; clip; last_clip = clip, clip = clip->parentWidget()) {
+        if(clip != widget) {
+            GetControlRegion((HIViewRef)clip->winId(), kControlStructureMetaPart, macr);
+            OffsetRgn(macr, clip_pos.x(), clip_pos.y());
+            ret &= qt_mac_convert_mac_region(macr);
+        }
+        const QObjectList &children = clip->children();
+        for(int i = children.size()-1; i >= 0; --i) {
+            if(QWidget *child = qobject_cast<QWidget*>(children.at(i))) {
+                if(child == last_clip)
+                    break;
+
+                // This check may seem weird, but when we are using a unified toolbar
+                // The widget is actually being owned by that toolbar and not by Qt.
+                // This means that the geometry it reports will be wrong
+                // and will accidentally cause problems when calculating the region
+                // So, it is better to skip these widgets since they aren't the hierarchy
+                // anyway.
+                if (HIViewGetSuperview(HIViewRef(child->winId())) != HIViewRef(clip->winId()))
+                    continue;
+
+                if(child->isVisible() && !child->isMinimized() && !child->isTopLevel()) {
+                    const QRect childRect = QRect(clip_pos+child->pos(), child->size());
+                    if(childRect.isValid() && wrect.intersects(childRect)) {
+                        GetControlRegion((HIViewRef)child->winId(), kControlStructureMetaPart, macr);
+                        OffsetRgn(macr, childRect.x(), childRect.y());
+                        ret -= qt_mac_convert_mac_region(macr);
+                    }
+                }
+            }
+        }
+        if(clip->isWindow())
+            break;
+        clip_pos -= clip->pos();
+    }
+    qt_mac_dispose_rgn(macr);
+    return ret;
+}
+
+#endif
+
+void QGLWidget::setMouseTracking(bool enable)
+{
+    QWidget::setMouseTracking(enable);
+}
+
+void QGLWidget::resizeEvent(QResizeEvent *)
+{
+    Q_D(QGLWidget);
+    if (!isValid())
+        return;
+#ifndef QT_MAC_USE_COCOA
+    if (!isWindow())
+        d->glcx->d_func()->update = true;
+#endif
+    makeCurrent();
+    if (!d->glcx->initialized())
+        glInit();
+#ifdef QT_MAC_USE_COCOA
+    d->glcx->updatePaintDevice();
+#endif
+#ifndef QT_MAC_USE_COCOA
+    float scale  = qt_mac_get_scale_factor(this);
+    resizeGL(width() * scale, height() * scale);
+#else
+    resizeGL(width(), height());
+#endif
+}
+
+const QGLContext* QGLWidget::overlayContext() const
+{
+    return 0;
+}
+
+void QGLWidget::makeOverlayCurrent()
+{
+}
+
+void QGLWidget::updateOverlayGL()
+{
+}
+
+void QGLWidget::setContext(QGLContext *context, const QGLContext* shareContext, bool deleteOldContext)
+{
+    Q_D(QGLWidget);
+    if (context == 0) {
+        qWarning("QGLWidget::setContext: Cannot set null context");
+        return;
+    }
+
+    if (d->glcx)
+        d->glcx->doneCurrent();
+    QGLContext* oldcx = d->glcx;
+    d->glcx = context;
+    if (!d->glcx->isValid())
+        d->glcx->create(shareContext ? shareContext : oldcx);
+    if (deleteOldContext && oldcx)
+        delete oldcx;
+}
+
+void QGLWidgetPrivate::init(QGLContext *context, const QGLWidget *shareWidget)
+{
+    Q_Q(QGLWidget);
+
+    initContext(context, shareWidget);
+
+    QWidget *current = q;
+    while (current) {
+        qt_widget_private(current)->glWidgets.append(QWidgetPrivate::GlWidgetInfo(q));
+        if (current->isWindow())
+            break;
+        current = current->parentWidget();
+    }
+}
+
+bool QGLWidgetPrivate::renderCxPm(QPixmap*)
+{
+    return false;
+}
+
+void QGLWidgetPrivate::cleanupColormaps()
+{
+}
+
+const QGLColormap & QGLWidget::colormap() const
+{
+    return d_func()->cmap;
+}
+
+void QGLWidget::setColormap(const QGLColormap &)
+{
+}
+
+void QGLWidgetPrivate::updatePaintDevice()
+{
+    Q_Q(QGLWidget);
+    glcx->updatePaintDevice();
+    q->update();
+}
+
+#endif
+
+QT_END_NAMESPACE
diff --git a/src/opengl/qgl_p.h b/src/opengl/qgl_p.h
new file mode 100644
index 0000000000..50d13c9540
--- /dev/null
+++ b/src/opengl/qgl_p.h
@@ -0,0 +1,903 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QGL_P_H
+#define QGL_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of the QGLWidget class.  This header file may change from
+// version to version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "QtOpenGL/qgl.h"
+#include "QtOpenGL/qglcolormap.h"
+#include "QtCore/qmap.h"
+#include "QtCore/qthread.h"
+#include "QtCore/qthreadstorage.h"
+#include "QtCore/qhash.h"
+#include "QtCore/qatomic.h"
+#include "private/qwidget_p.h"
+#include "qcache.h"
+#include "qglpaintdevice_p.h"
+
+#ifndef QT_NO_EGL
+#include <QtGui/private/qegl_p.h>
+#endif
+
+#if defined(Q_WS_QPA)
+#include <QtGui/QPlatformGLContext>
+#endif
+
+QT_BEGIN_NAMESPACE
+
+class QGLContext;
+class QGLOverlayWidget;
+class QPixmap;
+class QPixmapFilter;
+#ifdef Q_WS_MAC
+# ifdef qDebug
+#   define old_qDebug qDebug
+#   undef qDebug
+# endif
+QT_BEGIN_INCLUDE_NAMESPACE
+#ifndef QT_MAC_USE_COCOA
+# include <AGL/agl.h>
+#endif
+QT_END_INCLUDE_NAMESPACE
+# ifdef old_qDebug
+#   undef qDebug
+#   define qDebug QT_NO_QDEBUG_MACRO
+#   undef old_qDebug
+# endif
+class QMacWindowChangeEvent;
+#endif
+
+#ifdef Q_WS_QWS
+class QWSGLWindowSurface;
+#endif
+
+#ifndef QT_NO_EGL
+class QEglContext;
+#endif
+
+QT_BEGIN_INCLUDE_NAMESPACE
+#include <QtOpenGL/private/qglextensions_p.h>
+QT_END_INCLUDE_NAMESPACE
+
+class QGLFormatPrivate
+{
+public:
+    QGLFormatPrivate()
+        : ref(1)
+    {
+        opts = QGL::DoubleBuffer | QGL::DepthBuffer | QGL::Rgba | QGL::DirectRendering
+             | QGL::StencilBuffer | QGL::DeprecatedFunctions;
+        pln = 0;
+        depthSize = accumSize = stencilSize = redSize = greenSize = blueSize = alphaSize = -1;
+        numSamples = -1;
+        swapInterval = -1;
+        majorVersion = 1;
+        minorVersion = 0;
+        profile = QGLFormat::NoProfile;
+    }
+    QGLFormatPrivate(const QGLFormatPrivate *other)
+        : ref(1),
+          opts(other->opts),
+          pln(other->pln),
+          depthSize(other->depthSize),
+          accumSize(other->accumSize),
+          stencilSize(other->stencilSize),
+          redSize(other->redSize),
+          greenSize(other->greenSize),
+          blueSize(other->blueSize),
+          alphaSize(other->alphaSize),
+          numSamples(other->numSamples),
+          swapInterval(other->swapInterval),
+          majorVersion(other->majorVersion),
+          minorVersion(other->minorVersion),
+          profile(other->profile)
+    {
+    }
+    QAtomicInt ref;
+    QGL::FormatOptions opts;
+    int pln;
+    int depthSize;
+    int accumSize;
+    int stencilSize;
+    int redSize;
+    int greenSize;
+    int blueSize;
+    int alphaSize;
+    int numSamples;
+    int swapInterval;
+    int majorVersion;
+    int minorVersion;
+    QGLFormat::OpenGLContextProfile profile;
+};
+
+class QGLWidgetPrivate : public QWidgetPrivate
+{
+    Q_DECLARE_PUBLIC(QGLWidget)
+public:
+    QGLWidgetPrivate() : QWidgetPrivate()
+                       , disable_clear_on_painter_begin(false)
+#if defined(Q_WS_QWS)
+                       , wsurf(0)
+#endif
+#if defined(Q_WS_X11) && !defined(QT_NO_EGL)
+                       , eglSurfaceWindowId(0)
+#endif
+#if defined(Q_OS_SYMBIAN)
+                       , eglSurfaceWindowId(0)
+#endif
+    {
+        isGLWidget = 1;
+    }
+
+    ~QGLWidgetPrivate() {}
+
+    void init(QGLContext *context, const QGLWidget* shareWidget);
+    void initContext(QGLContext *context, const QGLWidget* shareWidget);
+    bool renderCxPm(QPixmap *pixmap);
+    void cleanupColormaps();
+    void aboutToDestroy() {
+        if (glcx)
+            glcx->reset();
+    }
+
+    QGLContext *glcx;
+    QGLWidgetGLPaintDevice glDevice;
+    bool autoSwap;
+
+    QGLColormap cmap;
+#ifndef QT_OPENGL_ES
+    QMap<QString, int> displayListCache;
+#endif
+
+    bool disable_clear_on_painter_begin;
+
+#if defined(Q_WS_WIN)
+    void updateColormap();
+    QGLContext *olcx;
+#elif defined(Q_WS_X11)
+    QGLOverlayWidget *olw;
+#ifndef QT_NO_EGL
+    void recreateEglSurface();
+    WId eglSurfaceWindowId;
+#endif
+#elif defined(Q_WS_MAC)
+    QGLContext *olcx;
+    void updatePaintDevice();
+#elif defined(Q_WS_QWS)
+    QWSGLWindowSurface *wsurf;
+#endif
+#ifdef Q_OS_SYMBIAN
+    void recreateEglSurface();
+    WId eglSurfaceWindowId;
+#endif
+};
+
+class QGLContextGroupResourceBase;
+class QGLSharedResourceGuard;
+
+// QGLContextPrivate has the responsibility of creating context groups.
+// QGLContextPrivate maintains the reference counter and destroys
+// context groups when needed.
+class QGLContextGroup
+{
+public:
+    ~QGLContextGroup();
+
+    QGLExtensionFuncs &extensionFuncs() {return m_extensionFuncs;}
+    const QGLContext *context() const {return m_context;}
+    bool isSharing() const { return m_shares.size() >= 2; }
+    QList<const QGLContext *> shares() const { return m_shares; }
+
+    void addGuard(QGLSharedResourceGuard *guard);
+    void removeGuard(QGLSharedResourceGuard *guard);
+
+    static void addShare(const QGLContext *context, const QGLContext *share);
+    static void removeShare(const QGLContext *context);
+
+private:
+    QGLContextGroup(const QGLContext *context);
+
+    QGLExtensionFuncs m_extensionFuncs;
+    const QGLContext *m_context; // context group's representative
+    QList<const QGLContext *> m_shares;
+    QHash<QGLContextGroupResourceBase *, void *> m_resources;
+    QGLSharedResourceGuard *m_guards; // double-linked list of active guards.
+    QAtomicInt m_refs;
+
+    void cleanupResources(const QGLContext *ctx);
+
+    friend class QGLContext;
+    friend class QGLContextPrivate;
+    friend class QGLContextGroupResourceBase;
+};
+
+// Get the context that resources for "ctx" will transfer to once
+// "ctx" is destroyed.  Returns null if nothing is sharing with ctx.
+Q_OPENGL_EXPORT const QGLContext *qt_gl_transfer_context(const QGLContext *);
+
+// GL extension definitions
+class QGLExtensions {
+public:
+    enum Extension {
+        TextureRectangle        = 0x00000001,
+        SampleBuffers           = 0x00000002,
+        GenerateMipmap          = 0x00000004,
+        TextureCompression      = 0x00000008,
+        FragmentProgram         = 0x00000010,
+        MirroredRepeat          = 0x00000020,
+        FramebufferObject       = 0x00000040,
+        StencilTwoSide          = 0x00000080,
+        StencilWrap             = 0x00000100,
+        PackedDepthStencil      = 0x00000200,
+        NVFloatBuffer           = 0x00000400,
+        PixelBufferObject       = 0x00000800,
+        FramebufferBlit         = 0x00001000,
+        NPOTTextures            = 0x00002000,
+        BGRATextureFormat       = 0x00004000,
+        DDSTextureCompression   = 0x00008000,
+        ETC1TextureCompression  = 0x00010000,
+        PVRTCTextureCompression = 0x00020000,
+        FragmentShader          = 0x00040000,
+        ElementIndexUint        = 0x00080000,
+        Depth24                 = 0x00100000
+    };
+    Q_DECLARE_FLAGS(Extensions, Extension)
+
+    static Extensions glExtensions();
+    static Extensions currentContextExtensions();
+};
+
+/*
+    QGLTemporaryContext - the main objective of this class is to have a way of
+    creating a GL context and making it current, without going via QGLWidget
+    and friends. At certain points during GL initialization we need a current
+    context in order decide what GL features are available, and to resolve GL
+    extensions. Having a light-weight way of creating such a context saves
+    initial application startup time, and it doesn't wind up creating recursive
+    conflicts.
+    The class currently uses a private d pointer to hide the platform specific
+    types. This could possibly been done inline with #ifdef'ery, but it causes
+    major headaches on e.g. X11 due to namespace pollution.
+*/
+class QGLTemporaryContextPrivate;
+class QGLTemporaryContext {
+public:
+    QGLTemporaryContext(bool directRendering = true, QWidget *parent = 0);
+    ~QGLTemporaryContext();
+
+private:
+    QScopedPointer<QGLTemporaryContextPrivate> d;
+};
+
+class QGLTexture;
+class QGLTextureDestroyer;
+
+// This probably needs to grow to GL_MAX_VERTEX_ATTRIBS, but 3 is ok for now as that's
+// all the GL2 engine uses:
+#define QT_GL_VERTEX_ARRAY_TRACKED_COUNT 3
+
+class QGLContextResourceBase;
+
+class QGLContextPrivate
+{
+    Q_DECLARE_PUBLIC(QGLContext)
+public:
+    explicit QGLContextPrivate(QGLContext *context);
+    ~QGLContextPrivate();
+    QGLTexture *bindTexture(const QImage &image, GLenum target, GLint format,
+                            QGLContext::BindOptions options);
+    QGLTexture *bindTexture(const QImage &image, GLenum target, GLint format, const qint64 key,
+                            QGLContext::BindOptions options);
+    QGLTexture *bindTexture(const QPixmap &pixmap, GLenum target, GLint format,
+                            QGLContext::BindOptions options);
+    QGLTexture *textureCacheLookup(const qint64 key, GLenum target);
+    void init(QPaintDevice *dev, const QGLFormat &format);
+    QImage convertToGLFormat(const QImage &image, bool force_premul, GLenum texture_format);
+    int maxTextureSize();
+
+    void cleanup();
+
+    void setVertexAttribArrayEnabled(int arrayIndex, bool enabled = true);
+    void syncGlState(); // Makes sure the GL context's state is what we think it is
+    void swapRegion(const QRegion &region);
+
+#if defined(Q_WS_WIN)
+    void updateFormatVersion();
+#endif
+
+#if defined(Q_WS_WIN)
+    HGLRC rc;
+    HDC dc;
+    WId        win;
+    int pixelFormatId;
+    QGLCmap* cmap;
+    HBITMAP hbitmap;
+    HDC hbitmap_hdc;
+    Qt::HANDLE threadId;
+#endif
+#ifndef QT_NO_EGL
+    QEglContext *eglContext;
+    EGLSurface eglSurface;
+    void destroyEglSurfaceForDevice();
+    EGLSurface eglSurfaceForDevice() const;
+    static QEglProperties *extraWindowSurfaceCreationProps;
+    static void setExtraWindowSurfaceCreationProps(QEglProperties *props);
+#endif
+
+#if defined(Q_WS_QPA)
+    QPlatformGLContext *platformContext;
+    void setupSharing();
+
+#elif defined(Q_WS_X11) || defined(Q_WS_MAC)
+    void* cx;
+#endif
+#if defined(Q_WS_X11) || defined(Q_WS_MAC)
+    void* vi;
+#endif
+#if defined(Q_WS_X11)
+    void* pbuf;
+    quint32 gpm;
+    int screen;
+    QHash<QPixmapData*, QPixmap> boundPixmaps;
+    QGLTexture *bindTextureFromNativePixmap(QPixmap*, const qint64 key,
+                                            QGLContext::BindOptions options);
+    static void destroyGlSurfaceForPixmap(QPixmapData*);
+    static void unbindPixmapFromTexture(QPixmapData*);
+#endif
+#if defined(Q_WS_MAC)
+    bool update;
+    void *tryFormat(const QGLFormat &format);
+    void clearDrawable();
+#endif
+    QGLFormat glFormat;
+    QGLFormat reqFormat;
+    GLuint fbo;
+
+    uint valid : 1;
+    uint sharing : 1;
+    uint initDone : 1;
+    uint crWin : 1;
+    uint internal_context : 1;
+    uint version_flags_cached : 1;
+    uint extension_flags_cached : 1;
+
+    // workarounds for driver/hw bugs on different platforms
+    uint workaround_needsFullClearOnEveryFrame : 1;
+    uint workaround_brokenFBOReadBack : 1;
+    uint workaround_brokenTexSubImage : 1;
+    uint workaroundsCached : 1;
+
+    uint workaround_brokenTextureFromPixmap : 1;
+    uint workaround_brokenTextureFromPixmap_init : 1;
+
+    uint workaround_brokenAlphaTexSubImage : 1;
+    uint workaround_brokenAlphaTexSubImage_init : 1;
+
+#ifndef QT_NO_EGL
+    uint ownsEglContext : 1;
+#endif
+
+    QPaintDevice *paintDevice;
+    QColor transpColor;
+    QGLContext *q_ptr;
+    QGLFormat::OpenGLVersionFlags version_flags;
+    QGLExtensions::Extensions extension_flags;
+
+    QGLContextGroup *group;
+    GLint max_texture_size;
+
+    GLuint current_fbo;
+    GLuint default_fbo;
+    QPaintEngine *active_engine;
+    QHash<QGLContextResourceBase *, void *> m_resources;
+    QGLTextureDestroyer *texture_destroyer;
+
+    bool vertexAttributeArraysEnabledState[QT_GL_VERTEX_ARRAY_TRACKED_COUNT];
+
+    static inline QGLContextGroup *contextGroup(const QGLContext *ctx) { return ctx->d_ptr->group; }
+
+#ifdef Q_WS_WIN
+    static inline QGLExtensionFuncs& extensionFuncs(const QGLContext *ctx) { return ctx->d_ptr->group->extensionFuncs(); }
+#endif
+
+#if defined(Q_WS_X11) || defined(Q_WS_MAC) || defined(Q_WS_QWS) || defined(Q_WS_QPA) || defined(Q_OS_SYMBIAN) 
+    static Q_OPENGL_EXPORT QGLExtensionFuncs qt_extensionFuncs;
+    static Q_OPENGL_EXPORT QGLExtensionFuncs& extensionFuncs(const QGLContext *);
+#endif
+
+    static void setCurrentContext(QGLContext *context);
+};
+
+Q_DECLARE_OPERATORS_FOR_FLAGS(QGLExtensions::Extensions)
+
+// Temporarily make a context current if not already current or
+// shared with the current contex.  The previous context is made
+// current when the object goes out of scope.
+class Q_OPENGL_EXPORT QGLShareContextScope
+{
+public:
+    QGLShareContextScope(const QGLContext *ctx)
+        : m_oldContext(0)
+    {
+        QGLContext *currentContext = const_cast<QGLContext *>(QGLContext::currentContext());
+        if (currentContext != ctx && !QGLContext::areSharing(ctx, currentContext)) {
+            m_oldContext = currentContext;
+            m_ctx = const_cast<QGLContext *>(ctx);
+            m_ctx->makeCurrent();
+        } else {
+            m_ctx = currentContext;
+        }
+    }
+
+    operator QGLContext *()
+    {
+        return m_ctx;
+    }
+
+    QGLContext *operator->()
+    {
+        return m_ctx;
+    }
+
+    ~QGLShareContextScope()
+    {
+        if (m_oldContext)
+            m_oldContext->makeCurrent();
+    }
+
+private:
+    QGLContext *m_oldContext;
+    QGLContext *m_ctx;
+};
+
+class QGLTextureDestroyer : public QObject
+{
+    Q_OBJECT
+public:
+    QGLTextureDestroyer() : QObject() {
+        qRegisterMetaType<GLuint>("GLuint");
+        connect(this, SIGNAL(freeTexture(QGLContext *, QPixmapData *, GLuint)),
+                this, SLOT(freeTexture_slot(QGLContext *, QPixmapData *, GLuint)));
+    }
+    void emitFreeTexture(QGLContext *context, QPixmapData *boundPixmap, GLuint id) {
+        emit freeTexture(context, boundPixmap, id);
+    }
+
+Q_SIGNALS:
+    void freeTexture(QGLContext *context, QPixmapData *boundPixmap, GLuint id);
+
+private slots:
+    void freeTexture_slot(QGLContext *context, QPixmapData *boundPixmap, GLuint id) {
+        Q_UNUSED(boundPixmap);
+#if defined(Q_WS_X11)
+        if (boundPixmap) {
+            QGLContext *oldContext = const_cast<QGLContext *>(QGLContext::currentContext());
+            context->makeCurrent();
+            // Although glXReleaseTexImage is a glX call, it must be called while there
+            // is a current context - the context the pixmap was bound to a texture in.
+            // Otherwise the release doesn't do anything and you get BadDrawable errors
+            // when you come to delete the context.
+            QGLContextPrivate::unbindPixmapFromTexture(boundPixmap);
+            glDeleteTextures(1, &id);
+            if (oldContext)
+                oldContext->makeCurrent();
+            return;
+        }
+#endif
+        QGLShareContextScope scope(context);
+        glDeleteTextures(1, &id);
+    }
+};
+
+// ### make QGLContext a QObject in 5.0 and remove the proxy stuff
+class Q_OPENGL_EXPORT QGLSignalProxy : public QObject
+{
+    Q_OBJECT
+public:
+    void emitAboutToDestroyContext(const QGLContext *context) {
+        emit aboutToDestroyContext(context);
+    }
+    static QGLSignalProxy *instance();
+Q_SIGNALS:
+    void aboutToDestroyContext(const QGLContext *context);
+};
+
+class QGLTexture {
+public:
+    QGLTexture(QGLContext *ctx = 0, GLuint tx_id = 0, GLenum tx_target = GL_TEXTURE_2D,
+               QGLContext::BindOptions opt = QGLContext::DefaultBindOption)
+        : context(ctx),
+          id(tx_id),
+          target(tx_target),
+          options(opt)
+#if defined(Q_WS_X11)
+        , boundPixmap(0)
+#endif
+    {}
+
+    ~QGLTexture() {
+        if (options & QGLContext::MemoryManagedBindOption) {
+            Q_ASSERT(context);
+#if !defined(Q_WS_X11)
+            QPixmapData *boundPixmap = 0;
+#endif
+            context->d_ptr->texture_destroyer->emitFreeTexture(context, boundPixmap, id);
+        }
+     }
+
+    QGLContext *context;
+    GLuint id;
+    GLenum target;
+
+    QGLContext::BindOptions options;
+
+#if defined(Q_WS_X11)
+    QPixmapData* boundPixmap;
+#endif
+
+    bool canBindCompressedTexture
+        (const char *buf, int len, const char *format, bool *hasAlpha);
+    QSize bindCompressedTexture
+        (const QString& fileName, const char *format = 0);
+    QSize bindCompressedTexture
+        (const char *buf, int len, const char *format = 0);
+    QSize bindCompressedTextureDDS(const char *buf, int len);
+    QSize bindCompressedTexturePVR(const char *buf, int len);
+};
+
+struct QGLTextureCacheKey {
+    qint64 key;
+    QGLContextGroup *group;
+};
+
+inline bool operator==(const QGLTextureCacheKey &a, const QGLTextureCacheKey &b)
+{
+    return a.key == b.key && a.group == b.group;
+}
+
+inline uint qHash(const QGLTextureCacheKey &key)
+{
+    return qHash(key.key) ^ qHash(key.group);
+}
+
+
+class Q_AUTOTEST_EXPORT QGLTextureCache {
+public:
+    QGLTextureCache();
+    ~QGLTextureCache();
+
+    void insert(QGLContext *ctx, qint64 key, QGLTexture *texture, int cost);
+    void remove(qint64 key);
+    inline int size();
+    inline void setMaxCost(int newMax);
+    inline int maxCost();
+    inline QGLTexture* getTexture(QGLContext *ctx, qint64 key);
+
+    bool remove(QGLContext *ctx, GLuint textureId);
+    void removeContextTextures(QGLContext *ctx);
+    static QGLTextureCache *instance();
+    static void cleanupTexturesForCacheKey(qint64 cacheKey);
+    static void cleanupTexturesForPixampData(QPixmapData* pixmap);
+    static void cleanupBeforePixmapDestruction(QPixmapData* pixmap);
+
+private:
+    QCache<QGLTextureCacheKey, QGLTexture> m_cache;
+    QReadWriteLock m_lock;
+};
+
+int QGLTextureCache::size() {
+    QReadLocker locker(&m_lock);
+    return m_cache.size();
+}
+
+void QGLTextureCache::setMaxCost(int newMax)
+{
+    QWriteLocker locker(&m_lock);
+    m_cache.setMaxCost(newMax);
+}
+
+int QGLTextureCache::maxCost()
+{
+    QReadLocker locker(&m_lock);
+    return m_cache.maxCost();
+}
+
+QGLTexture* QGLTextureCache::getTexture(QGLContext *ctx, qint64 key)
+{
+    QReadLocker locker(&m_lock);
+    const QGLTextureCacheKey cacheKey = {key, QGLContextPrivate::contextGroup(ctx)};
+    return m_cache.object(cacheKey);
+}
+
+extern Q_OPENGL_EXPORT QPaintEngine* qt_qgl_paint_engine();
+
+bool qt_gl_preferGL2Engine();
+
+inline GLenum qt_gl_preferredTextureFormat()
+{
+    return (QGLExtensions::glExtensions() & QGLExtensions::BGRATextureFormat) && QSysInfo::ByteOrder == QSysInfo::LittleEndian
+        ? GL_BGRA : GL_RGBA;
+}
+
+inline GLenum qt_gl_preferredTextureTarget()
+{
+#if defined(QT_OPENGL_ES_2)
+    return GL_TEXTURE_2D;
+#else
+    return (QGLExtensions::glExtensions() & QGLExtensions::TextureRectangle)
+           && !qt_gl_preferGL2Engine()
+           ? GL_TEXTURE_RECTANGLE_NV
+           : GL_TEXTURE_2D;
+#endif
+}
+
+/*
+   Base for resources that are shared in a context group.
+*/
+class Q_OPENGL_EXPORT QGLContextGroupResourceBase
+{
+public:
+    QGLContextGroupResourceBase();
+    virtual ~QGLContextGroupResourceBase();
+    void insert(const QGLContext *context, void *value);
+    void *value(const QGLContext *context);
+    void cleanup(const QGLContext *context);
+    void cleanup(const QGLContext *context, void *value);
+    virtual void freeResource(void *value) = 0;
+
+protected:
+    QList<QGLContextGroup *> m_groups;
+
+private:
+    QAtomicInt active;
+};
+
+/*
+   The QGLContextGroupResource template is used to manage a resource
+   for a group of sharing GL contexts. When the last context in the
+   group is destroyed, or when the QGLContextGroupResource object
+   itself is destroyed (implies potential context switches), the
+   resource will be freed.
+
+   The class used as the template class type needs to have a
+   constructor with the following signature:
+     T(const QGLContext *);
+*/
+template <class T>
+class QGLContextGroupResource : public QGLContextGroupResourceBase
+{
+public:
+    ~QGLContextGroupResource() {
+        for (int i = 0; i < m_groups.size(); ++i) {
+            const QGLContext *context = m_groups.at(i)->context();
+            T *resource = reinterpret_cast<T *>(QGLContextGroupResourceBase::value(context));
+            if (resource) {
+                QGLShareContextScope scope(context);
+                delete resource;
+            }
+        }
+    }
+
+    T *value(const QGLContext *context) {
+        T *resource = reinterpret_cast<T *>(QGLContextGroupResourceBase::value(context));
+        if (!resource) {
+            resource = new T(context);
+            insert(context, resource);
+        }
+        return resource;
+    }
+
+protected:
+    void freeResource(void *resource) {
+        delete reinterpret_cast<T *>(resource);
+    }
+};
+
+/*
+   Base for resources that are context specific.
+*/
+class Q_OPENGL_EXPORT QGLContextResourceBase
+{
+public:
+    virtual ~QGLContextResourceBase() {
+        for (int i = 0; i < m_contexts.size(); ++i)
+            m_contexts.at(i)->d_ptr->m_resources.remove(this);
+    }
+
+    void insert(const QGLContext *context, void *value) {
+        context->d_ptr->m_resources.insert(this, value);
+    }
+
+    void *value(const QGLContext *context) {
+        return context->d_ptr->m_resources.value(this, 0);
+    }
+    virtual void freeResource(void *value) = 0;
+
+protected:
+    QList<const QGLContext *> m_contexts;
+};
+
+/*
+   The QGLContextResource template is used to manage a resource for a
+   single GL context. Just before the context is destroyed (while it's
+   still the current context), or when the QGLContextResource object
+   itself is destroyed (implies potential context switches), the
+   resource will be freed.  The class used as the template class type
+   needs to have a constructor with the following signature: T(const
+   QGLContext *);
+*/
+template <class T>
+class QGLContextResource : public QGLContextResourceBase
+{
+public:
+    ~QGLContextResource() {
+        for (int i = 0; i < m_contexts.size(); ++i) {
+            const QGLContext *context = m_contexts.at(i);
+            T *resource = reinterpret_cast<T *>(QGLContextResourceBase::value(context));
+            if (resource) {
+                QGLShareContextScope scope(context);
+                delete resource;
+            }
+        }
+    }
+
+    T *value(const QGLContext *context) {
+        T *resource = reinterpret_cast<T *>(QGLContextResourceBase::value(context));
+        if (!resource) {
+            resource = new T(context);
+            insert(context, resource);
+        }
+        return resource;
+    }
+
+protected:
+    void freeResource(void *resource) {
+        delete reinterpret_cast<T *>(resource);
+    }
+};
+
+// Put a guard around a GL object identifier and its context.
+// When the context goes away, a shared context will be used
+// in its place.  If there are no more shared contexts, then
+// the identifier is returned as zero - it is assumed that the
+// context destruction cleaned up the identifier in this case.
+class Q_OPENGL_EXPORT QGLSharedResourceGuard
+{
+public:
+    QGLSharedResourceGuard(const QGLContext *context)
+        : m_group(0), m_id(0), m_next(0), m_prev(0)
+    {
+        setContext(context);
+    }
+    QGLSharedResourceGuard(const QGLContext *context, GLuint id)
+        : m_group(0), m_id(id), m_next(0), m_prev(0)
+    {
+        setContext(context);
+    }
+    ~QGLSharedResourceGuard();
+
+    const QGLContext *context() const
+    {
+        return m_group ? m_group->context() : 0;
+    }
+
+    void setContext(const QGLContext *context);
+
+    GLuint id() const
+    {
+        return m_id;
+    }
+
+    void setId(GLuint id)
+    {
+        m_id = id;
+    }
+
+private:
+    QGLContextGroup *m_group;
+    GLuint m_id;
+    QGLSharedResourceGuard *m_next;
+    QGLSharedResourceGuard *m_prev;
+
+    friend class QGLContextGroup;
+};
+
+
+class QGLExtensionMatcher
+{
+public:
+    QGLExtensionMatcher(const char *str);
+    QGLExtensionMatcher();
+
+    bool match(const char *str) const {
+        int str_length = qstrlen(str);
+
+        Q_ASSERT(str);
+        Q_ASSERT(str_length > 0);
+        Q_ASSERT(str[str_length-1] != ' ');
+
+        for (int i = 0; i < m_offsets.size(); ++i) {
+            const char *extension = m_extensions.constData() + m_offsets.at(i);
+            if (qstrncmp(extension, str, str_length) == 0 && extension[str_length] == ' ')
+                return true;
+        }
+        return false;
+    }
+
+private:
+    void init(const char *str);
+
+    QByteArray m_extensions;
+    QVector<int> m_offsets;
+};
+
+
+// this is a class that wraps a QThreadStorage object for storing
+// thread local instances of the GL 1 and GL 2 paint engines
+
+template <class T>
+class QGLEngineThreadStorage
+{
+public:
+    QPaintEngine *engine() {
+        QPaintEngine *&localEngine = storage.localData();
+        if (!localEngine)
+            localEngine = new T;
+        return localEngine;
+    }
+
+private:
+    QThreadStorage<QPaintEngine *> storage;
+};
+QT_END_NAMESPACE
+
+#endif // QGL_P_H
diff --git a/src/opengl/qgl_qpa.cpp b/src/opengl/qgl_qpa.cpp
new file mode 100644
index 0000000000..994344c6eb
--- /dev/null
+++ b/src/opengl/qgl_qpa.cpp
@@ -0,0 +1,394 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QApplication>
+#include <QtGui/private/qapplication_p.h>
+#include <QPixmap>
+#include <QDebug>
+
+#include <QtGui/private/qapplication_p.h>
+#include <QtGui/QPlatformWindow>
+
+#include "qgl.h"
+#include "qgl_p.h"
+
+QT_BEGIN_NAMESPACE
+
+QGLFormat QGLFormat::fromPlatformWindowFormat(const QPlatformWindowFormat &format)
+{
+    QGLFormat retFormat;
+    retFormat.setAccum(format.accum());
+    if (format.accumBufferSize() >= 0)
+        retFormat.setAccumBufferSize(format.accumBufferSize());
+    retFormat.setAlpha(format.alpha());
+    if (format.alphaBufferSize() >= 0)
+        retFormat.setAlphaBufferSize(format.alphaBufferSize());
+    if (format.blueBufferSize() >= 0)
+        retFormat.setBlueBufferSize(format.blueBufferSize());
+    retFormat.setDepth(format.depth());
+    if (format.depthBufferSize() >= 0)
+        retFormat.setDepthBufferSize(format.depthBufferSize());
+    retFormat.setDirectRendering(format.directRendering());
+    retFormat.setDoubleBuffer(format.doubleBuffer());
+    if (format.greenBufferSize() >= 0)
+        retFormat.setGreenBufferSize(format.greenBufferSize());
+    if (format.redBufferSize() >= 0)
+        retFormat.setRedBufferSize(format.redBufferSize());
+    retFormat.setRgba(format.rgba());
+    retFormat.setSampleBuffers(format.sampleBuffers());
+    retFormat.setSamples(format.sampleBuffers());
+    retFormat.setStencil(format.stencil());
+    if (format.stencilBufferSize() >= 0)
+        retFormat.setStencilBufferSize(format.stencilBufferSize());
+    retFormat.setStereo(format.stereo());
+    retFormat.setSwapInterval(format.swapInterval());
+    return retFormat;
+}
+
+QPlatformWindowFormat QGLFormat::toPlatformWindowFormat(const QGLFormat &format)
+{
+    QPlatformWindowFormat retFormat;
+    retFormat.setAccum(format.accum());
+    if (format.accumBufferSize() >= 0)
+        retFormat.setAccumBufferSize(format.accumBufferSize());
+    retFormat.setAlpha(format.alpha());
+    if (format.alphaBufferSize() >= 0)
+        retFormat.setAlphaBufferSize(format.alphaBufferSize());
+    if (format.blueBufferSize() >= 0)
+        retFormat.setBlueBufferSize(format.blueBufferSize());
+    retFormat.setDepth(format.depth());
+    if (format.depthBufferSize() >= 0)
+        retFormat.setDepthBufferSize(format.depthBufferSize());
+    retFormat.setDirectRendering(format.directRendering());
+    retFormat.setDoubleBuffer(format.doubleBuffer());
+    if (format.greenBufferSize() >= 0)
+        retFormat.setGreenBufferSize(format.greenBufferSize());
+    if (format.redBufferSize() >= 0)
+        retFormat.setRedBufferSize(format.redBufferSize());
+    retFormat.setRgba(format.rgba());
+    retFormat.setSampleBuffers(format.sampleBuffers());
+    if (format.samples() >= 0)
+        retFormat.setSamples(format.samples());
+    retFormat.setStencil(format.stencil());
+    if (format.stencilBufferSize() >= 0)
+        retFormat.setStencilBufferSize(format.stencilBufferSize());
+    retFormat.setStereo(format.stereo());
+    retFormat.setSwapInterval(format.swapInterval());
+    return retFormat;
+}
+
+void QGLContextPrivate::setupSharing() {
+    Q_Q(QGLContext);
+    QPlatformGLContext *sharedPlatformGLContext = platformContext->platformWindowFormat().sharedGLContext();
+    if (sharedPlatformGLContext) {
+        QGLContext *actualSharedContext = QGLContext::fromPlatformGLContext(sharedPlatformGLContext);
+        sharing = true;
+        QGLContextGroup::addShare(q,actualSharedContext);
+    }
+}
+
+bool QGLFormat::hasOpenGL()
+{
+    return QApplicationPrivate::platformIntegration()
+            ->hasCapability(QPlatformIntegration::OpenGL);
+}
+
+void qDeleteQGLContext(void *handle)
+{
+    QGLContext *context = static_cast<QGLContext *>(handle);
+    delete context;
+}
+
+bool QGLContext::chooseContext(const QGLContext* shareContext)
+{
+    Q_D(QGLContext);
+    if(!d->paintDevice || d->paintDevice->devType() != QInternal::Widget) {
+        d->valid = false;
+    }else {
+        QWidget *widget = static_cast<QWidget *>(d->paintDevice);
+        if (!widget->platformWindow()){
+            QGLFormat glformat = format();
+            QPlatformWindowFormat winFormat = QGLFormat::toPlatformWindowFormat(glformat);
+            if (shareContext) {
+                winFormat.setSharedContext(shareContext->d_func()->platformContext);
+            }
+            winFormat.setWindowApi(QPlatformWindowFormat::OpenGL);
+            winFormat.setWindowSurface(false);
+            widget->setPlatformWindowFormat(winFormat);
+            widget->winId();//make window
+        }
+        d->platformContext = widget->platformWindow()->glContext();
+        Q_ASSERT(d->platformContext);
+        d->glFormat = QGLFormat::fromPlatformWindowFormat(d->platformContext->platformWindowFormat());
+        d->valid =(bool) d->platformContext;
+        if (d->valid) {
+            d->platformContext->setQGLContextHandle(this,qDeleteQGLContext);
+        }
+        d->setupSharing();
+    }
+
+
+    return d->valid;
+}
+
+void QGLContext::reset()
+{
+    Q_D(QGLContext);
+    if (!d->valid)
+        return;
+    d->cleanup();
+
+    d->crWin = false;
+    d->sharing = false;
+    d->valid = false;
+    d->transpColor = QColor();
+    d->initDone = false;
+    QGLContextGroup::removeShare(this);
+    if (d->platformContext) {
+        d->platformContext->setQGLContextHandle(0,0);
+    }
+}
+
+void QGLContext::makeCurrent()
+{
+    Q_D(QGLContext);
+    d->platformContext->makeCurrent();
+
+    if (!d->workaroundsCached) {
+        d->workaroundsCached = true;
+        const char *renderer = reinterpret_cast<const char *>(glGetString(GL_RENDERER));
+        if (renderer && strstr(renderer, "Mali")) {
+            d->workaround_brokenFBOReadBack = true;
+        }
+    }
+
+}
+
+void QGLContext::doneCurrent()
+{
+    Q_D(QGLContext);
+    d->platformContext->doneCurrent();
+}
+
+void QGLContext::swapBuffers() const
+{
+    Q_D(const QGLContext);
+    d->platformContext->swapBuffers();
+}
+
+void *QGLContext::getProcAddress(const QString &procName) const
+{
+    Q_D(const QGLContext);
+    return d->platformContext->getProcAddress(procName);
+}
+
+void QGLWidget::setContext(QGLContext *context,
+                            const QGLContext* shareContext,
+                            bool deleteOldContext)
+{
+    Q_D(QGLWidget);
+    if (context == 0) {
+        qWarning("QGLWidget::setContext: Cannot set null context");
+        return;
+    }
+
+    if (context->device() == 0) // a context may refere to more than 1 window.
+        context->setDevice(this); //but its better to point to 1 of them than none of them.
+
+    QGLContext* oldcx = d->glcx;
+    d->glcx = context;
+
+    if (!d->glcx->isValid())
+        d->glcx->create(shareContext ? shareContext : oldcx);
+
+    if (deleteOldContext)
+        delete oldcx;
+}
+
+void QGLWidgetPrivate::init(QGLContext *context, const QGLWidget *shareWidget)
+{
+    initContext(context, shareWidget);
+}
+
+bool QGLFormat::hasOpenGLOverlays()
+{
+    return false;
+}
+
+QColor QGLContext::overlayTransparentColor() const
+{
+    return QColor(); // Invalid color
+}
+
+uint QGLContext::colorIndex(const QColor&) const
+{
+    return 0;
+}
+
+void QGLContext::generateFontDisplayLists(const QFont & fnt, int listBase)
+{
+    Q_UNUSED(fnt);
+    Q_UNUSED(listBase);
+}
+
+/*
+    QGLTemporaryContext implementation
+*/
+class QGLTemporaryContextPrivate
+{
+public:
+    QWidget *widget;
+    QPlatformGLContext *context;
+};
+
+QGLTemporaryContext::QGLTemporaryContext(bool, QWidget *)
+    : d(new QGLTemporaryContextPrivate)
+{
+    d->context = const_cast<QPlatformGLContext *>(QPlatformGLContext::currentContext());
+    if (d->context)
+        d->context->doneCurrent();
+    d->widget = new QWidget;
+    d->widget->setGeometry(0,0,3,3);
+    QPlatformWindowFormat format = d->widget->platformWindowFormat();
+    format.setWindowApi(QPlatformWindowFormat::OpenGL);
+    format.setWindowSurface(false);
+    d->widget->setPlatformWindowFormat(format);
+    d->widget->winId();
+
+    d->widget->platformWindow()->glContext()->makeCurrent();
+}
+
+QGLTemporaryContext::~QGLTemporaryContext()
+{
+    d->widget->platformWindow()->glContext()->doneCurrent();
+    if (d->context)
+        d->context->makeCurrent();
+    delete d->widget;
+}
+
+
+bool QGLWidgetPrivate::renderCxPm(QPixmap*)
+{
+    return false;
+}
+
+/*! \internal
+  Free up any allocated colormaps. This fn is only called for
+  top-level widgets.
+*/
+void QGLWidgetPrivate::cleanupColormaps()
+{
+}
+
+void QGLWidget::setMouseTracking(bool enable)
+{
+    Q_UNUSED(enable);
+}
+
+bool QGLWidget::event(QEvent *e)
+{
+    return QWidget::event(e);
+}
+
+void QGLWidget::resizeEvent(QResizeEvent *e)
+{
+    Q_D(QGLWidget);
+
+    QWidget::resizeEvent(e);
+    if (!isValid())
+        return;
+    makeCurrent();
+    if (!d->glcx->initialized())
+        glInit();
+    resizeGL(width(), height());
+}
+
+
+const QGLContext* QGLWidget::overlayContext() const
+{
+    return 0;
+}
+
+void QGLWidget::makeOverlayCurrent()
+{
+}
+
+
+void QGLWidget::updateOverlayGL()
+{
+}
+
+const QGLColormap & QGLWidget::colormap() const
+{
+    Q_D(const QGLWidget);
+    return d->cmap;
+}
+
+void QGLWidget::setColormap(const QGLColormap & c)
+{
+    Q_UNUSED(c);
+}
+
+QGLContext::QGLContext(QPlatformGLContext *platformContext)
+    : d_ptr(new QGLContextPrivate(this))
+{
+    Q_D(QGLContext);
+    d->init(0,QGLFormat::fromPlatformWindowFormat(platformContext->platformWindowFormat()));
+    d->platformContext = platformContext;
+    d->platformContext->setQGLContextHandle(this,qDeleteQGLContext);
+    d->valid = true;
+    d->setupSharing();
+}
+
+QGLContext *QGLContext::fromPlatformGLContext(QPlatformGLContext *platformContext)
+{
+    if (!platformContext)
+        return 0;
+    if (platformContext->qGLContextHandle()) {
+        return reinterpret_cast<QGLContext *>(platformContext->qGLContextHandle());
+    }
+    QGLContext *glContext = new QGLContext(platformContext);
+    //Dont call create on context. This can cause the platformFormat to be set on the widget, which
+    //will cause the platformWindow to be recreated.
+    return glContext;
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/qgl_qws.cpp b/src/opengl/qgl_qws.cpp
new file mode 100644
index 0000000000..6ad2774eaf
--- /dev/null
+++ b/src/opengl/qgl_qws.cpp
@@ -0,0 +1,318 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qgl.h"
+#include "qgl_egl_p.h"
+#include "qglpixelbuffer.h"
+
+#include <qglscreen_qws.h>
+#include <qscreenproxy_qws.h>
+#include <private/qglwindowsurface_qws_p.h>
+
+#include <private/qbackingstore_p.h>
+#include <private/qfont_p.h>
+#include <private/qfontengine_p.h>
+#include <private/qgl_p.h>
+#include <private/qpaintengine_opengl_p.h>
+#include <qpixmap.h>
+#include <qtimer.h>
+#include <qapplication.h>
+#include <qstack.h>
+#include <qdesktopwidget.h>
+#include <qdebug.h>
+#include <qvarlengtharray.h>
+
+QT_BEGIN_NAMESPACE
+
+static QGLScreen *glScreenForDevice(QPaintDevice *device)
+{
+    QScreen *screen = qt_screen;
+    if (screen->classId() == QScreen::MultiClass) {
+        int screenNumber;
+        if (device && device->devType() == QInternal::Widget)
+            screenNumber = qApp->desktop()->screenNumber(static_cast<QWidget *>(device));
+        else
+            screenNumber = 0;
+        screen = screen->subScreens()[screenNumber];
+    }
+    while (screen->classId() == QScreen::ProxyClass ||
+           screen->classId() == QScreen::TransformedClass) {
+        screen = static_cast<QProxyScreen *>(screen)->screen();
+    }
+    if (screen->classId() == QScreen::GLClass)
+        return static_cast<QGLScreen *>(screen);
+    else
+        return 0;
+}
+
+/*
+    QGLTemporaryContext implementation
+*/
+
+class QGLTemporaryContextPrivate
+{
+public:
+    QGLWidget *widget;
+};
+
+QGLTemporaryContext::QGLTemporaryContext(bool, QWidget *)
+    : d(new QGLTemporaryContextPrivate)
+{
+    d->widget = new QGLWidget;
+    d->widget->makeCurrent();
+}
+
+QGLTemporaryContext::~QGLTemporaryContext()
+{
+    delete d->widget;
+}
+
+/*****************************************************************************
+  QOpenGL debug facilities
+ *****************************************************************************/
+//#define DEBUG_OPENGL_REGION_UPDATE
+
+bool QGLFormat::hasOpenGLOverlays()
+{
+    QGLScreen *glScreen = glScreenForDevice(0);
+    if (glScreen)
+        return (glScreen->options() & QGLScreen::Overlays);
+    else
+        return false;
+}
+
+static EGLSurface qt_egl_create_surface
+    (QEglContext *context, QPaintDevice *device,
+     const QEglProperties *properties = 0)
+{
+    // Get the screen surface functions, which are used to create native ids.
+    QGLScreen *glScreen = glScreenForDevice(device);
+    if (!glScreen)
+        return EGL_NO_SURFACE;
+    QGLScreenSurfaceFunctions *funcs = glScreen->surfaceFunctions();
+    if (!funcs)
+        return EGL_NO_SURFACE;
+
+    // Create the native drawable for the paint device.
+    int devType = device->devType();
+    EGLNativePixmapType pixmapDrawable = 0;
+    EGLNativeWindowType windowDrawable = 0;
+    bool ok;
+    if (devType == QInternal::Pixmap) {
+        ok = funcs->createNativePixmap(static_cast<QPixmap *>(device), &pixmapDrawable);
+    } else if (devType == QInternal::Image) {
+        ok = funcs->createNativeImage(static_cast<QImage *>(device), &pixmapDrawable);
+    } else {
+        ok = funcs->createNativeWindow(static_cast<QWidget *>(device), &windowDrawable);
+    }
+    if (!ok) {
+        qWarning("QEglContext::createSurface(): Cannot create the native EGL drawable");
+        return EGL_NO_SURFACE;
+    }
+
+    // Create the EGL surface to draw into, based on the native drawable.
+    const int *props;
+    if (properties)
+        props = properties->properties();
+    else
+        props = 0;
+    EGLSurface surf;
+    if (devType == QInternal::Widget) {
+        surf = eglCreateWindowSurface
+            (context->display(), context->config(), windowDrawable, props);
+    } else {
+        surf = eglCreatePixmapSurface
+            (context->display(), context->config(), pixmapDrawable, props);
+    }
+    if (surf == EGL_NO_SURFACE)
+        qWarning("QEglContext::createSurface(): Unable to create EGL surface, error = 0x%x", eglGetError());
+    return surf;
+}
+
+bool QGLContext::chooseContext(const QGLContext* shareContext)
+{
+    Q_D(QGLContext);
+
+    // Validate the device.
+    if (!device())
+        return false;
+    int devType = device()->devType();
+    if (devType != QInternal::Pixmap && devType != QInternal::Image && devType != QInternal::Widget) {
+        qWarning("QGLContext::chooseContext(): Cannot create QGLContext's for paint device type %d", devType);
+        return false;
+    }
+
+    // Get the display and initialize it.
+    d->eglContext = new QEglContext();
+    d->ownsEglContext = true;
+    d->eglContext->setApi(QEgl::OpenGL);
+
+    // Construct the configuration we need for this surface.
+    QEglProperties configProps;
+    qt_eglproperties_set_glformat(configProps, d->glFormat);
+    configProps.setDeviceType(devType);
+    configProps.setPaintDeviceFormat(device());
+    configProps.setRenderableType(QEgl::OpenGL);
+
+    // Search for a matching configuration, reducing the complexity
+    // each time until we get something that matches.
+    if (!d->eglContext->chooseConfig(configProps)) {
+        delete d->eglContext;
+        d->eglContext = 0;
+        return false;
+    }
+
+    // Inform the higher layers about the actual format properties.
+    qt_glformat_from_eglconfig(d->glFormat, d->eglContext->config());
+
+    // Create a new context for the configuration.
+    if (!d->eglContext->createContext
+            (shareContext ? shareContext->d_func()->eglContext : 0)) {
+        delete d->eglContext;
+        d->eglContext = 0;
+        return false;
+    }
+    d->sharing = d->eglContext->isSharing();
+    if (d->sharing && shareContext)
+        const_cast<QGLContext *>(shareContext)->d_func()->sharing = true;
+
+#if defined(EGL_VERSION_1_1)
+    if (d->glFormat.swapInterval() != -1 && devType == QInternal::Widget)
+        eglSwapInterval(d->eglContext->display(), d->glFormat.swapInterval());
+#endif
+
+    // Create the EGL surface to draw into.  We cannot use
+    // QEglContext::createSurface() because it does not have
+    // access to the QGLScreen.
+    d->eglSurface = qt_egl_create_surface(d->eglContext, device());
+    if (d->eglSurface == EGL_NO_SURFACE) {
+        delete d->eglContext;
+        d->eglContext = 0;
+        return false;
+    }
+
+    return true;
+}
+
+
+bool QGLWidget::event(QEvent *e)
+{
+    return QWidget::event(e);
+}
+
+
+void QGLWidget::resizeEvent(QResizeEvent *)
+{
+    Q_D(QGLWidget);
+    if (!isValid())
+        return;
+    makeCurrent();
+    if (!d->glcx->initialized())
+        glInit();
+    resizeGL(width(), height());
+    //handle overlay
+}
+
+const QGLContext* QGLWidget::overlayContext() const
+{
+    return 0;
+}
+
+void QGLWidget::makeOverlayCurrent()
+{
+    //handle overlay
+}
+
+void QGLWidget::updateOverlayGL()
+{
+    //handle overlay
+}
+
+void QGLWidget::setContext(QGLContext *context, const QGLContext* shareContext, bool deleteOldContext)
+{
+    Q_D(QGLWidget);
+    if(context == 0) {
+        qWarning("QGLWidget::setContext: Cannot set null context");
+        return;
+    }
+
+    if(d->glcx)
+        d->glcx->doneCurrent();
+    QGLContext* oldcx = d->glcx;
+    d->glcx = context;
+    if(!d->glcx->isValid())
+        d->glcx->create(shareContext ? shareContext : oldcx);
+    if(deleteOldContext)
+        delete oldcx;
+}
+
+void QGLWidgetPrivate::init(QGLContext *context, const QGLWidget* shareWidget)
+{
+    Q_Q(QGLWidget);
+
+    QGLScreen *glScreen = glScreenForDevice(q);
+    if (glScreen) {
+        wsurf = static_cast<QWSGLWindowSurface*>(glScreen->createSurface(q));
+        q->setWindowSurface(wsurf);
+    }
+
+    initContext(context, shareWidget);
+
+    if(q->isValid() && glcx->format().hasOverlay()) {
+        //no overlay
+        qWarning("QtOpenGL ES doesn't currently support overlays");
+    }
+}
+
+void QGLWidgetPrivate::cleanupColormaps()
+{
+}
+
+const QGLColormap & QGLWidget::colormap() const
+{
+    return d_func()->cmap;
+}
+
+void QGLWidget::setColormap(const QGLColormap &)
+{
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/qgl_symbian.cpp b/src/opengl/qgl_symbian.cpp
new file mode 100644
index 0000000000..1b41db47db
--- /dev/null
+++ b/src/opengl/qgl_symbian.cpp
@@ -0,0 +1,472 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+
+#include "qgl.h"
+#include <fbs.h>
+#include <private/qt_s60_p.h>
+#include <private/qpixmap_s60_p.h>
+#include <private/qimagepixmapcleanuphooks_p.h>
+#include <private/qgl_p.h>
+#include <private/qpaintengine_opengl_p.h>
+#include <private/qwidget_p.h> // to access QWExtra
+#include <private/qnativeimagehandleprovider_p.h>
+#include "qgl_egl_p.h"
+#include "qpixmapdata_gl_p.h"
+#include "qgltexturepool_p.h"
+#include "qcolormap.h"
+#include <QDebug>
+
+QT_BEGIN_NAMESPACE
+
+// Turn off "direct to window" rendering if EGL cannot support it.
+#if !defined(EGL_RENDER_BUFFER) || !defined(EGL_SINGLE_BUFFER)
+#if defined(QGL_DIRECT_TO_WINDOW)
+#undef QGL_DIRECT_TO_WINDOW
+#endif
+#endif
+
+// Determine if preserved window contents should be used.
+#if !defined(EGL_SWAP_BEHAVIOR) || !defined(EGL_BUFFER_PRESERVED)
+#if !defined(QGL_NO_PRESERVED_SWAP)
+#define QGL_NO_PRESERVED_SWAP 1
+#endif
+#endif
+
+extern int qt_gl_pixmap_serial;
+
+/*
+    QGLTemporaryContext implementation
+*/
+
+
+class QGLTemporaryContextPrivate
+{
+public:
+    bool initialized;
+    RWindow *window;
+    EGLContext context;
+    EGLSurface surface;
+    EGLDisplay display;
+};
+
+QGLTemporaryContext::QGLTemporaryContext(bool, QWidget *)
+    : d(new QGLTemporaryContextPrivate)
+{
+    d->initialized = false;
+    d->window = 0;
+    d->context = 0;
+    d->surface = 0;
+
+    d->display = d->display = QEgl::display();
+
+    EGLConfig config;
+    int numConfigs = 0;
+    EGLint attribs[] = {
+        EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
+#ifdef QT_OPENGL_ES_2
+        EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
+#endif
+        EGL_NONE
+    };
+
+    eglChooseConfig(d->display, attribs, &config, 1, &numConfigs);
+    if (!numConfigs) {
+        qWarning("QGLTemporaryContext: No EGL configurations available.");
+        return;
+    }
+
+    d->window = new RWindow(CCoeEnv::Static()->WsSession());
+    d->window->Construct(CCoeEnv::Static()->RootWin(),(uint)this);
+
+    d->surface = eglCreateWindowSurface(d->display, config, (EGLNativeWindowType) d->window, NULL);
+
+    if (d->surface == EGL_NO_SURFACE) {
+        qWarning("QGLTemporaryContext: Error creating EGL surface.");
+        delete d->window;
+        d->window = 0;
+        return;
+    }
+
+    EGLint contextAttribs[] = {
+#ifdef QT_OPENGL_ES_2
+        EGL_CONTEXT_CLIENT_VERSION, 2,
+#endif
+        EGL_NONE
+    };
+    d->context = eglCreateContext(d->display, config, 0, contextAttribs);
+    if (d->context != EGL_NO_CONTEXT
+        && eglMakeCurrent(d->display, d->surface, d->surface, d->context))
+    {
+        d->initialized = true;
+    } else {
+        qWarning("QGLTemporaryContext: Error creating EGL context.");
+        d->window = 0;
+        return;
+    }
+}
+
+QGLTemporaryContext::~QGLTemporaryContext()
+{
+    if (d->initialized) {
+        eglMakeCurrent(d->display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+        eglDestroyContext(d->display, d->context);
+        eglDestroySurface(d->display, d->surface);
+        delete d->window;
+    }
+}
+
+bool QGLFormat::hasOpenGLOverlays()
+{
+    return false;
+}
+
+// Chooses the EGL config and creates the EGL context
+bool QGLContext::chooseContext(const QGLContext* shareContext) // almost same as in qgl_x11egl.cpp
+{
+    Q_D(QGLContext);
+
+    if (!device())
+        return false;
+
+    int devType = device()->devType();
+
+    if ((devType != QInternal::Widget) && (devType != QInternal::Pbuffer)) {
+        qWarning("WARNING: Creating a QGLContext not supported on device type %d", devType);
+        return false;
+    }
+
+    // Get the display and initialize it.
+    if (d->eglContext == 0) {
+        d->eglContext = new QEglContext();
+        d->ownsEglContext = true;
+        d->eglContext->setApi(QEgl::OpenGL);
+
+	    // If the device is a widget with WA_TranslucentBackground set, make sure the glFormat
+        // has the alpha channel option set:
+        if (devType == QInternal::Widget) {
+            QWidget* widget = static_cast<QWidget*>(device());
+            if (widget->testAttribute(Qt::WA_TranslucentBackground))
+                d->glFormat.setAlpha(true);
+        }
+
+        // Construct the configuration we need for this surface.
+        QEglProperties configProps;
+        configProps.setDeviceType(devType);
+        configProps.setPaintDeviceFormat(device());
+        configProps.setRenderableType(QEgl::OpenGL);
+        configProps.setValue(EGL_SURFACE_TYPE, EGL_WINDOW_BIT|EGL_SWAP_BEHAVIOR_PRESERVED_BIT);
+
+        qt_eglproperties_set_glformat(configProps, d->glFormat);
+
+        if (!d->eglContext->chooseConfig(configProps, QEgl::BestPixelFormat)) {
+            delete d->eglContext;
+            d->eglContext = 0;
+            return false;
+        }
+
+        // Create a new context for the configuration.
+        QEglContext* eglSharedContext = shareContext ? shareContext->d_func()->eglContext : 0;
+        if (!d->eglContext->createContext(eglSharedContext)) {
+            delete d->eglContext;
+            d->eglContext = 0;
+            return false;
+        }
+        d->sharing = d->eglContext->isSharing();
+        if (d->sharing && shareContext)
+            const_cast<QGLContext *>(shareContext)->d_func()->sharing = true;
+	}
+
+    // Inform the higher layers about the actual format properties
+    qt_glformat_from_eglconfig(d->glFormat, d->eglContext->config());
+
+    // Do don't create the EGLSurface for everything.
+    //    QWidget - yes, create the EGLSurface and store it in QGLContextPrivate::eglSurface
+    //    QGLWidget - yes, create the EGLSurface and store it in QGLContextPrivate::eglSurface
+    //    QGLPixelBuffer - no, it creates the surface itself and stores it in QGLPixelBufferPrivate::pbuf
+
+    if (devType == QInternal::Widget) {
+        if (d->eglSurface != EGL_NO_SURFACE)
+            eglDestroySurface(d->eglContext->display(), d->eglSurface);
+
+        d->eglSurface = QEgl::createSurface(device(), d->eglContext->config());
+
+    eglGetError();  // Clear error state first.
+
+#ifdef QGL_NO_PRESERVED_SWAP
+    eglSurfaceAttrib(QEgl::display(), d->eglSurface,
+            EGL_SWAP_BEHAVIOR, EGL_BUFFER_DESTROYED);
+
+    if (eglGetError() != EGL_SUCCESS)
+        qWarning("QGLContext: could not enable destroyed swap behaviour");
+#else
+    eglSurfaceAttrib(QEgl::display(), d->eglSurface,
+            EGL_SWAP_BEHAVIOR, EGL_BUFFER_PRESERVED);
+
+    if (eglGetError() != EGL_SUCCESS)
+        qWarning("QGLContext: could not enable preserved swap behaviour");
+#endif
+
+        setWindowCreated(true);
+    }
+
+    return true;
+}
+
+void QGLWidget::resizeEvent(QResizeEvent *)
+{
+    Q_D(QGLWidget);
+    if (!isValid())
+        return;
+
+    if (QGLContext::currentContext())
+        doneCurrent();
+
+    // Symbian needs to recreate the surface on resize.
+    d->recreateEglSurface();
+
+    makeCurrent();
+    if (!d->glcx->initialized())
+        glInit();
+    resizeGL(width(), height());
+    //handle overlay
+}
+
+const QGLContext* QGLWidget::overlayContext() const
+{
+    return 0;
+}
+
+void QGLWidget::makeOverlayCurrent()
+{
+    //handle overlay
+}
+
+void QGLWidget::updateOverlayGL()
+{
+    //handle overlay
+}
+
+void QGLWidget::setContext(QGLContext *context, const QGLContext* shareContext, bool deleteOldContext)
+{
+    Q_D(QGLWidget);
+    if (context == 0) {
+        qWarning("QGLWidget::setContext: Cannot set null context");
+        return;
+    }
+    if (!context->deviceIsPixmap() && context->device() != this) {
+        qWarning("QGLWidget::setContext: Context must refer to this widget");
+        return;
+    }
+
+    if (d->glcx)
+        d->glcx->doneCurrent();
+    QGLContext* oldcx = d->glcx;
+    d->glcx = context;
+
+    bool createFailed = false;
+    if (!d->glcx->isValid()) {
+        // Create the QGLContext here, which in turn chooses the EGL config
+        // and creates the EGL context:
+        if (!d->glcx->create(shareContext ? shareContext : oldcx))
+            createFailed = true;
+    }
+    if (createFailed) {
+        if (deleteOldContext)
+            delete oldcx;
+        return;
+    }
+
+    d->eglSurfaceWindowId = winId(); // Remember the window id we created the surface for
+}
+
+void QGLWidgetPrivate::init(QGLContext *context, const QGLWidget* shareWidget)
+{
+    Q_Q(QGLWidget);
+
+    initContext(context, shareWidget);
+
+    if(q->isValid() && glcx->format().hasOverlay()) {
+        //no overlay
+        qWarning("QtOpenGL ES doesn't currently support overlays");
+    }
+}
+
+void QGLWidgetPrivate::cleanupColormaps()
+{
+}
+
+const QGLColormap & QGLWidget::colormap() const
+{
+    return d_func()->cmap;
+}
+
+void QGLWidget::setColormap(const QGLColormap &)
+{
+}
+
+void QGLWidgetPrivate::recreateEglSurface()
+{
+    Q_Q(QGLWidget);
+
+    WId currentId = q->winId();
+
+    if (glcx->d_func()->eglSurface != EGL_NO_SURFACE) {
+        eglDestroySurface(glcx->d_func()->eglContext->display(),
+                                                glcx->d_func()->eglSurface);
+    }
+
+    glcx->d_func()->eglSurface = QEgl::createSurface(glcx->device(),
+                                       glcx->d_func()->eglContext->config());
+
+#if !defined(QGL_NO_PRESERVED_SWAP)
+        eglGetError();  // Clear error state first.
+        eglSurfaceAttrib(QEgl::display(), glcx->d_func()->eglSurface,
+                                    EGL_SWAP_BEHAVIOR, EGL_BUFFER_PRESERVED);
+        if (eglGetError() != EGL_SUCCESS) {
+            qWarning("QGLContext: could not enable preserved swap");
+        }
+#endif
+
+    eglSurfaceWindowId = currentId;
+}
+
+static inline bool knownGoodFormat(QImage::Format format)
+{
+    switch (format) {
+        case QImage::Format_RGB16: // EColor64K
+        case QImage::Format_RGB32: // EColor16MU
+        case QImage::Format_ARGB32_Premultiplied: // EColor16MAP
+            return true;
+        default:
+            return false;
+    }
+}
+
+void QGLPixmapData::fromNativeType(void* pixmap, NativeType type)
+{
+    if (type == QPixmapData::FbsBitmap) {
+        CFbsBitmap *bitmap = reinterpret_cast<CFbsBitmap *>(pixmap);
+        QSize size(bitmap->SizeInPixels().iWidth, bitmap->SizeInPixels().iHeight);
+        if (size.width() == w && size.height() == h)
+            setSerialNumber(++qt_gl_pixmap_serial);
+        resize(size.width(), size.height());
+        m_source = QVolatileImage(bitmap);
+        if (pixelType() == BitmapType) {
+            m_source.ensureFormat(QImage::Format_MonoLSB);
+        } else if (!knownGoodFormat(m_source.format())) {
+            m_source.beginDataAccess();
+            QImage::Format format = idealFormat(m_source.imageRef(), Qt::AutoColor);
+            m_source.endDataAccess(true);
+            m_source.ensureFormat(format);
+        }
+        m_hasAlpha = m_source.hasAlphaChannel();
+        m_hasFillColor = false;
+        m_dirty = true;
+
+    } else if (type == QPixmapData::VolatileImage && pixmap) {
+        // Support QS60Style in more efficient skin graphics retrieval.
+        QVolatileImage *img = static_cast<QVolatileImage *>(pixmap);
+        if (img->width() == w && img->height() == h)
+            setSerialNumber(++qt_gl_pixmap_serial);
+        resize(img->width(), img->height());
+        m_source = *img;
+        m_hasAlpha = m_source.hasAlphaChannel();
+        m_hasFillColor = false;
+        m_dirty = true;
+    } else if (type == QPixmapData::NativeImageHandleProvider && pixmap) {
+        destroyTexture();
+        nativeImageHandleProvider = static_cast<QNativeImageHandleProvider *>(pixmap);
+        // Cannot defer the retrieval, we need at least the size right away.
+        createFromNativeImageHandleProvider();
+    }
+}
+
+void* QGLPixmapData::toNativeType(NativeType type)
+{
+    if (type == QPixmapData::FbsBitmap) {
+        if (m_source.isNull())
+            m_source = QVolatileImage(w, h, QImage::Format_ARGB32_Premultiplied);
+        return m_source.duplicateNativeImage();
+    }
+
+    return 0;
+}
+
+bool QGLPixmapData::initFromNativeImageHandle(void *handle, const QString &type)
+{
+    if (type == QLatin1String("RSgImage")) {
+        fromNativeType(handle, QPixmapData::SgImage);
+        return true;
+    } else if (type == QLatin1String("CFbsBitmap")) {
+        fromNativeType(handle, QPixmapData::FbsBitmap);
+        return true;
+    }
+    return false;
+}
+
+void QGLPixmapData::createFromNativeImageHandleProvider()
+{
+    void *handle = 0;
+    QString type;
+    nativeImageHandleProvider->get(&handle, &type);
+    if (handle) {
+        if (initFromNativeImageHandle(handle, type)) {
+            nativeImageHandle = handle;
+            nativeImageType = type;
+        } else {
+            qWarning("QGLPixmapData: Unknown native image type '%s'", qPrintable(type));
+        }
+    } else {
+        qWarning("QGLPixmapData: Native handle is null");
+    }
+}
+
+void QGLPixmapData::releaseNativeImageHandle()
+{
+    if (nativeImageHandleProvider && nativeImageHandle) {
+        nativeImageHandleProvider->release(nativeImageHandle, nativeImageType);
+        nativeImageHandle = 0;
+        nativeImageType = QString();
+    }
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/qgl_win.cpp b/src/opengl/qgl_win.cpp
new file mode 100644
index 0000000000..70016a0825
--- /dev/null
+++ b/src/opengl/qgl_win.cpp
@@ -0,0 +1,1601 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+
+#include <qgl.h>
+#include <qlist.h>
+#include <qmap.h>
+#include <qpixmap.h>
+#include <qevent.h>
+#include <private/qgl_p.h>
+#include <qcolormap.h>
+#include <qvarlengtharray.h>
+#include <qdebug.h>
+#include <qcolor.h>
+
+#include <qt_windows.h>
+
+typedef bool (APIENTRY *PFNWGLGETPIXELFORMATATTRIBIVARB)(HDC hdc,
+                                                         int iPixelFormat,
+                                                         int iLayerPlane,
+                                                         uint nAttributes,
+                                                         const int *piAttributes,
+                                                         int *piValues);
+typedef bool (APIENTRY *PFNWGLCHOOSEPIXELFORMATARB)(HDC hdc,
+                                                    const int *piAttribList,
+                                                    const float *pfAttribFList,
+                                                    uint nMaxFormats,
+                                                    int *piFormats,
+                                                    UINT *nNumFormats);
+#ifndef WGL_ARB_multisample
+#define WGL_SAMPLE_BUFFERS_ARB               0x2041
+#define WGL_SAMPLES_ARB                      0x2042
+#endif
+
+#ifndef WGL_ARB_pixel_format
+#define WGL_NUMBER_PIXEL_FORMATS_ARB   0x2000
+#define WGL_DRAW_TO_WINDOW_ARB         0x2001
+#define WGL_DRAW_TO_BITMAP_ARB         0x2002
+#define WGL_ACCELERATION_ARB           0x2003
+#define WGL_NEED_PALETTE_ARB           0x2004
+#define WGL_NEED_SYSTEM_PALETTE_ARB    0x2005
+#define WGL_SWAP_LAYER_BUFFERS_ARB     0x2006
+#define WGL_SWAP_METHOD_ARB            0x2007
+#define WGL_NUMBER_OVERLAYS_ARB        0x2008
+#define WGL_NUMBER_UNDERLAYS_ARB       0x2009
+#define WGL_TRANSPARENT_ARB            0x200A
+#define WGL_TRANSPARENT_RED_VALUE_ARB  0x2037
+#define WGL_TRANSPARENT_GREEN_VALUE_ARB 0x2038
+#define WGL_TRANSPARENT_BLUE_VALUE_ARB 0x2039
+#define WGL_TRANSPARENT_ALPHA_VALUE_ARB 0x203A
+#define WGL_TRANSPARENT_INDEX_VALUE_ARB 0x203B
+#define WGL_SHARE_DEPTH_ARB            0x200C
+#define WGL_SHARE_STENCIL_ARB          0x200D
+#define WGL_SHARE_ACCUM_ARB            0x200E
+#define WGL_SUPPORT_GDI_ARB            0x200F
+#define WGL_SUPPORT_OPENGL_ARB         0x2010
+#define WGL_DOUBLE_BUFFER_ARB          0x2011
+#define WGL_STEREO_ARB                 0x2012
+#define WGL_PIXEL_TYPE_ARB             0x2013
+#define WGL_COLOR_BITS_ARB             0x2014
+#define WGL_RED_BITS_ARB               0x2015
+#define WGL_RED_SHIFT_ARB              0x2016
+#define WGL_GREEN_BITS_ARB             0x2017
+#define WGL_GREEN_SHIFT_ARB            0x2018
+#define WGL_BLUE_BITS_ARB              0x2019
+#define WGL_BLUE_SHIFT_ARB             0x201A
+#define WGL_ALPHA_BITS_ARB             0x201B
+#define WGL_ALPHA_SHIFT_ARB            0x201C
+#define WGL_ACCUM_BITS_ARB             0x201D
+#define WGL_ACCUM_RED_BITS_ARB         0x201E
+#define WGL_ACCUM_GREEN_BITS_ARB       0x201F
+#define WGL_ACCUM_BLUE_BITS_ARB        0x2020
+#define WGL_ACCUM_ALPHA_BITS_ARB       0x2021
+#define WGL_DEPTH_BITS_ARB             0x2022
+#define WGL_STENCIL_BITS_ARB           0x2023
+#define WGL_AUX_BUFFERS_ARB            0x2024
+#define WGL_NO_ACCELERATION_ARB        0x2025
+#define WGL_GENERIC_ACCELERATION_ARB   0x2026
+#define WGL_FULL_ACCELERATION_ARB      0x2027
+#define WGL_SWAP_EXCHANGE_ARB          0x2028
+#define WGL_SWAP_COPY_ARB              0x2029
+#define WGL_SWAP_UNDEFINED_ARB         0x202A
+#define WGL_TYPE_RGBA_ARB              0x202B
+#define WGL_TYPE_COLORINDEX_ARB        0x202C
+#endif
+
+#ifndef WGL_ARB_create_context
+#define WGL_CONTEXT_MAJOR_VERSION_ARB               0x2091
+#define WGL_CONTEXT_MINOR_VERSION_ARB               0x2092
+#define WGL_CONTEXT_LAYER_PLANE_ARB                 0x2093
+#define WGL_CONTEXT_FLAGS_ARB                       0x2094
+#define WGL_CONTEXT_PROFILE_MASK_ARB                0x9126
+#define WGL_CONTEXT_DEBUG_BIT_ARB                   0x0001
+#define WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB      0x0002
+#define WGL_CONTEXT_CORE_PROFILE_BIT_ARB            0x0001
+#define WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB   0x0002
+// Error codes returned by GetLastError().
+#define ERROR_INVALID_VERSION_ARB                   0x2095
+#define ERROR_INVALID_PROFILE_ARB                   0x2096
+#endif
+
+#ifndef GL_VERSION_3_2
+#define GL_CONTEXT_PROFILE_MASK                     0x9126
+#define GL_MAJOR_VERSION                            0x821B
+#define GL_MINOR_VERSION                            0x821C
+#define GL_NUM_EXTENSIONS                           0x821D
+#define GL_CONTEXT_FLAGS                            0x821E
+#define GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT      0x0001
+#endif
+
+QT_BEGIN_NAMESPACE
+
+class QGLCmapPrivate
+{
+public:
+    QGLCmapPrivate() : count(1) { }
+    void ref()                { ++count; }
+    bool deref()        { return !--count; }
+    uint count;
+
+    enum AllocState{ UnAllocated = 0, Allocated = 0x01, Reserved = 0x02 };
+
+    int maxSize;
+    QVector<uint> colorArray;
+    QVector<quint8> allocArray;
+    QVector<quint8> contextArray;
+    QMap<uint,int> colorMap;
+};
+
+/*****************************************************************************
+  QColorMap class - temporarily here, until it is ready for prime time
+ *****************************************************************************/
+
+/****************************************************************************
+**
+** Definition of QColorMap class
+**
+****************************************************************************/
+
+class QGLCmapPrivate;
+
+class /*Q_EXPORT*/ QGLCmap
+{
+public:
+    enum Flags { Reserved = 0x01 };
+
+    QGLCmap(int maxSize = 256);
+    QGLCmap(const QGLCmap& map);
+    ~QGLCmap();
+
+    QGLCmap& operator=(const QGLCmap& map);
+
+    // isEmpty and/or isNull ?
+    int size() const;
+    int maxSize() const;
+
+    void resize(int newSize);
+
+    int find(QRgb color) const;
+    int findNearest(QRgb color) const;
+    int allocate(QRgb color, uint flags = 0, quint8 context = 0);
+
+    void setEntry(int idx, QRgb color, uint flags = 0, quint8 context = 0);
+
+    const QRgb* colors() const;
+
+private:
+    void detach();
+    QGLCmapPrivate* d;
+};
+
+
+QGLCmap::QGLCmap(int maxSize) // add a bool prealloc?
+{
+    d = new QGLCmapPrivate;
+    d->maxSize = maxSize;
+}
+
+
+QGLCmap::QGLCmap(const QGLCmap& map)
+{
+    d = map.d;
+    d->ref();
+}
+
+
+QGLCmap::~QGLCmap()
+{
+    if (d && d->deref())
+        delete d;
+    d = 0;
+}
+
+
+QGLCmap& QGLCmap::operator=(const QGLCmap& map)
+{
+    map.d->ref();
+    if (d->deref())
+        delete d;
+    d = map.d;
+    return *this;
+}
+
+
+int QGLCmap::size() const
+{
+    return d->colorArray.size();
+}
+
+
+int QGLCmap::maxSize() const
+{
+    return d->maxSize;
+}
+
+
+void QGLCmap::detach()
+{
+    if (d->count != 1) {
+        d->deref();
+        QGLCmapPrivate* newd = new QGLCmapPrivate;
+        newd->maxSize = d->maxSize;
+        newd->colorArray = d->colorArray;
+        newd->allocArray = d->allocArray;
+        newd->contextArray = d->contextArray;
+        newd->colorArray.detach();
+        newd->allocArray.detach();
+        newd->contextArray.detach();
+        newd->colorMap = d->colorMap;
+        d = newd;
+    }
+}
+
+
+void QGLCmap::resize(int newSize)
+{
+    if (newSize < 0 || newSize > d->maxSize) {
+        qWarning("QGLCmap::resize(): size out of range");
+        return;
+    }
+    int oldSize = size();
+    detach();
+    //if shrinking; remove the lost elems from colorMap
+    d->colorArray.resize(newSize);
+    d->allocArray.resize(newSize);
+    d->contextArray.resize(newSize);
+    if (newSize > oldSize) {
+        memset(d->allocArray.data() + oldSize, 0, newSize - oldSize);
+        memset(d->contextArray.data() + oldSize, 0, newSize - oldSize);
+    }
+}
+
+
+int QGLCmap::find(QRgb color) const
+{
+    QMap<uint,int>::ConstIterator it = d->colorMap.find(color);
+    if (it != d->colorMap.end())
+        return *it;
+    return -1;
+}
+
+
+int QGLCmap::findNearest(QRgb color) const
+{
+    int idx = find(color);
+    if (idx >= 0)
+        return idx;
+    int mapSize = size();
+    int mindist = 200000;
+    int r = qRed(color);
+    int g = qGreen(color);
+    int b = qBlue(color);
+    int rx, gx, bx, dist;
+    for (int i=0; i < mapSize; i++) {
+        if (!(d->allocArray[i] & QGLCmapPrivate::Allocated))
+            continue;
+        QRgb ci = d->colorArray[i];
+        rx = r - qRed(ci);
+        gx = g - qGreen(ci);
+        bx = b - qBlue(ci);
+        dist = rx*rx + gx*gx + bx*bx;                // calculate distance
+        if (dist < mindist) {                        // minimal?
+            mindist = dist;
+            idx = i;
+        }
+    }
+    return idx;
+}
+
+
+
+
+// Does not always allocate; returns existing c idx if found
+
+int QGLCmap::allocate(QRgb color, uint flags, quint8 context)
+{
+    int idx = find(color);
+    if (idx >= 0)
+        return idx;
+
+    int mapSize = d->colorArray.size();
+    int newIdx = d->allocArray.indexOf(QGLCmapPrivate::UnAllocated);
+
+    if (newIdx < 0) {                        // Must allocate more room
+        if (mapSize < d->maxSize) {
+            newIdx = mapSize;
+            mapSize++;
+            resize(mapSize);
+        }
+        else {
+            //# add a bool param that says what to do in case no more room -
+            // fail (-1) or return nearest?
+            return -1;
+        }
+    }
+
+    d->colorArray[newIdx] = color;
+    if (flags & QGLCmap::Reserved) {
+        d->allocArray[newIdx] = QGLCmapPrivate::Reserved;
+    }
+    else {
+        d->allocArray[newIdx] = QGLCmapPrivate::Allocated;
+        d->colorMap.insert(color, newIdx);
+    }
+    d->contextArray[newIdx] = context;
+    return newIdx;
+}
+
+
+void QGLCmap::setEntry(int idx, QRgb color, uint flags, quint8 context)
+{
+    if (idx < 0 || idx >= d->maxSize) {
+        qWarning("QGLCmap::set(): Index out of range");
+        return;
+    }
+    detach();
+    int mapSize = size();
+    if (idx >= mapSize) {
+        mapSize = idx + 1;
+        resize(mapSize);
+    }
+    d->colorArray[idx] = color;
+    if (flags & QGLCmap::Reserved) {
+        d->allocArray[idx] = QGLCmapPrivate::Reserved;
+    }
+    else {
+        d->allocArray[idx] = QGLCmapPrivate::Allocated;
+        d->colorMap.insert(color, idx);
+    }
+    d->contextArray[idx] = context;
+}
+
+
+const QRgb* QGLCmap::colors() const
+{
+    return d->colorArray.data();
+}
+
+
+
+/*****************************************************************************
+  QGLFormat Win32/WGL-specific code
+ *****************************************************************************/
+
+
+void qwglError(const char* method, const char* func)
+{
+#ifndef QT_NO_DEBUG
+    char* lpMsgBuf;
+    FormatMessageA(
+                  FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
+                  0, GetLastError(),
+                  MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
+                  (char*) &lpMsgBuf, 0, 0);
+    qWarning("%s : %s failed: %s", method, func, lpMsgBuf);
+    LocalFree(lpMsgBuf);
+#else
+    Q_UNUSED(method);
+    Q_UNUSED(func);
+#endif
+}
+
+
+
+bool QGLFormat::hasOpenGL()
+{
+    return true;
+}
+
+static bool opengl32dll = false;
+
+bool QGLFormat::hasOpenGLOverlays()
+{
+    // workaround for matrox driver:
+    // make a cheap call to opengl to force loading of DLL
+    if (!opengl32dll) {
+        GLint params;
+        glGetIntegerv(GL_DEPTH_BITS, &params);
+        opengl32dll = true;
+    }
+
+    static bool checkDone = false;
+    static bool hasOl = false;
+
+    if (!checkDone) {
+        checkDone = true;
+        HDC display_dc = GetDC(0);
+        int pfiMax = DescribePixelFormat(display_dc, 0, 0, NULL);
+        PIXELFORMATDESCRIPTOR pfd;
+        for (int pfi = 1; pfi <= pfiMax; pfi++) {
+            DescribePixelFormat(display_dc, pfi, sizeof(PIXELFORMATDESCRIPTOR), &pfd);
+            if ((pfd.bReserved & 0x0f) && (pfd.dwFlags & PFD_SUPPORT_OPENGL)) {
+                // This format has overlays/underlays
+                LAYERPLANEDESCRIPTOR lpd;
+                wglDescribeLayerPlane(display_dc, pfi, 1,
+                                       sizeof(LAYERPLANEDESCRIPTOR), &lpd);
+                if (lpd.dwFlags & LPD_SUPPORT_OPENGL) {
+                    hasOl = true;
+                    break;
+                }
+            }
+        }
+        ReleaseDC(0, display_dc);
+    }
+    return hasOl;
+}
+
+
+/*****************************************************************************
+  QGLContext Win32/WGL-specific code
+ *****************************************************************************/
+
+static uchar qgl_rgb_palette_comp(int idx, uint nbits, uint shift)
+{
+    const uchar map_3_to_8[8] = {
+        0, 0111>>1, 0222>>1, 0333>>1, 0444>>1, 0555>>1, 0666>>1, 0377
+    };
+    const uchar map_2_to_8[4] = {
+        0, 0x55, 0xaa, 0xff
+    };
+    const uchar map_1_to_8[2] = {
+        0, 255
+    };
+
+    uchar val = (uchar) (idx >> shift);
+    uchar res = 0;
+    switch (nbits) {
+    case 1:
+        val &= 0x1;
+        res =  map_1_to_8[val];
+        break;
+    case 2:
+        val &= 0x3;
+        res = map_2_to_8[val];
+        break;
+    case 3:
+        val &= 0x7;
+        res = map_3_to_8[val];
+        break;
+    default:
+        res = 0;
+    }
+    return res;
+}
+
+
+static QRgb* qgl_create_rgb_palette(const PIXELFORMATDESCRIPTOR* pfd)
+{
+    if ((pfd->iPixelType != PFD_TYPE_RGBA) ||
+         !(pfd->dwFlags & PFD_NEED_PALETTE) ||
+         (pfd->cColorBits != 8))
+        return 0;
+    int numEntries = 1 << pfd->cColorBits;
+    QRgb* pal = new QRgb[numEntries];
+    for (int i = 0; i < numEntries; i++) {
+        int r = qgl_rgb_palette_comp(i, pfd->cRedBits, pfd->cRedShift);
+        int g = qgl_rgb_palette_comp(i, pfd->cGreenBits, pfd->cGreenShift);
+        int b = qgl_rgb_palette_comp(i, pfd->cBlueBits, pfd->cBlueShift);
+        pal[i] = qRgb(r, g, b);
+    }
+
+    const int syscol_indices[12] = {
+        3, 24, 27, 64, 67, 88, 173, 181, 236, 247, 164, 91
+    };
+
+    const uint syscols[20] = {
+        0x000000, 0x800000, 0x008000, 0x808000, 0x000080, 0x800080,
+        0x008080, 0xc0c0c0, 0xc0dcc0, 0xa6caf0, 0xfffbf0, 0xa0a0a4,
+        0x808080, 0xff0000, 0x00ff00, 0xffff00, 0x0000ff, 0xff00ff,
+        0x00ffff, 0xffffff
+    };        // colors #1 - #12 are not present in pal; gets added below
+
+    if ((pfd->cColorBits == 8)                                &&
+         (pfd->cRedBits   == 3) && (pfd->cRedShift   == 0)        &&
+         (pfd->cGreenBits == 3) && (pfd->cGreenShift == 3)        &&
+         (pfd->cBlueBits  == 2) && (pfd->cBlueShift  == 6)) {
+        for (int j = 0 ; j < 12 ; j++)
+            pal[syscol_indices[j]] = QRgb(syscols[j+1]);
+    }
+
+    return pal;
+}
+
+static QGLFormat pfdToQGLFormat(const PIXELFORMATDESCRIPTOR* pfd)
+{
+    QGLFormat fmt;
+    fmt.setDoubleBuffer(pfd->dwFlags & PFD_DOUBLEBUFFER);
+    fmt.setDepth(pfd->cDepthBits);
+    if (fmt.depth())
+        fmt.setDepthBufferSize(pfd->cDepthBits);
+    fmt.setRgba(pfd->iPixelType == PFD_TYPE_RGBA);
+    fmt.setRedBufferSize(pfd->cRedBits);
+    fmt.setGreenBufferSize(pfd->cGreenBits);
+    fmt.setBlueBufferSize(pfd->cBlueBits);
+    fmt.setAlpha(pfd->cAlphaBits);
+    if (fmt.alpha())
+        fmt.setAlphaBufferSize(pfd->cAlphaBits);
+    fmt.setAccum(pfd->cAccumBits);
+    if (fmt.accum())
+        fmt.setAccumBufferSize(pfd->cAccumRedBits);
+    fmt.setStencil(pfd->cStencilBits);
+    if (fmt.stencil())
+        fmt.setStencilBufferSize(pfd->cStencilBits);
+    fmt.setStereo(pfd->dwFlags & PFD_STEREO);
+    fmt.setDirectRendering((pfd->dwFlags & PFD_GENERIC_ACCELERATED) ||
+                            !(pfd->dwFlags & PFD_GENERIC_FORMAT));
+    fmt.setOverlay((pfd->bReserved & 0x0f) != 0);
+    return fmt;
+}
+
+/*
+   NB! requires a current GL context to work
+*/
+QGLFormat pfiToQGLFormat(HDC hdc, int pfi)
+{
+    QGLFormat fmt;
+    QVarLengthArray<int> iAttributes(40);
+    QVarLengthArray<int> iValues(40);
+    int i = 0;
+    bool has_sample_buffers = QGLExtensions::glExtensions() & QGLExtensions::SampleBuffers;
+
+    iAttributes[i++] = WGL_DOUBLE_BUFFER_ARB; // 0
+    iAttributes[i++] = WGL_DEPTH_BITS_ARB; // 1
+    iAttributes[i++] = WGL_PIXEL_TYPE_ARB; // 2
+    iAttributes[i++] = WGL_RED_BITS_ARB; // 3
+    iAttributes[i++] = WGL_GREEN_BITS_ARB; // 4
+    iAttributes[i++] = WGL_BLUE_BITS_ARB; // 5
+    iAttributes[i++] = WGL_ALPHA_BITS_ARB; // 6
+    iAttributes[i++] = WGL_ACCUM_BITS_ARB; // 7
+    iAttributes[i++] = WGL_STENCIL_BITS_ARB; // 8
+    iAttributes[i++] = WGL_STEREO_ARB; // 9
+    iAttributes[i++] = WGL_ACCELERATION_ARB; // 10
+    iAttributes[i++] = WGL_NUMBER_OVERLAYS_ARB; // 11
+    if (has_sample_buffers) {
+        iAttributes[i++] = WGL_SAMPLE_BUFFERS_ARB; // 12
+        iAttributes[i++] = WGL_SAMPLES_ARB; // 13
+    }
+    PFNWGLGETPIXELFORMATATTRIBIVARB wglGetPixelFormatAttribivARB =
+        (PFNWGLGETPIXELFORMATATTRIBIVARB) wglGetProcAddress("wglGetPixelFormatAttribivARB");
+
+    if (wglGetPixelFormatAttribivARB
+        && wglGetPixelFormatAttribivARB(hdc, pfi, 0, i,
+                                        iAttributes.constData(),
+                                        iValues.data()))
+    {
+        fmt.setDoubleBuffer(iValues[0]);
+        fmt.setDepth(iValues[1]);
+        if (fmt.depth())
+            fmt.setDepthBufferSize(iValues[1]);
+        fmt.setRgba(iValues[2] == WGL_TYPE_RGBA_ARB);
+        fmt.setRedBufferSize(iValues[3]);
+        fmt.setGreenBufferSize(iValues[4]);
+        fmt.setBlueBufferSize(iValues[5]);
+        fmt.setAlpha(iValues[6]);
+        if (fmt.alpha())
+            fmt.setAlphaBufferSize(iValues[6]);
+        fmt.setAccum(iValues[7]);
+        if (fmt.accum())
+            fmt.setAccumBufferSize(iValues[7]);
+        fmt.setStencil(iValues[8]);
+        if (fmt.stencil())
+            fmt.setStencilBufferSize(iValues[8]);
+        fmt.setStereo(iValues[9]);
+        if (iValues[10] == WGL_FULL_ACCELERATION_ARB)
+            fmt.setDirectRendering(true);
+        else
+            fmt.setDirectRendering(false);
+        fmt.setOverlay(iValues[11]);
+        if (has_sample_buffers) {
+            fmt.setSampleBuffers(iValues[12]);
+            if (fmt.sampleBuffers())
+                fmt.setSamples(iValues[13]);
+        }
+    }
+#if 0
+    qDebug() << "values for pfi:" << pfi;
+    qDebug() << "doublebuffer  0:" << fmt.doubleBuffer();
+    qDebug() << "depthbuffer   1:" << fmt.depthBufferSize();
+    qDebug() << "rgba          2:" << fmt.rgba();
+    qDebug() << "red size      3:" << fmt.redBufferSize();
+    qDebug() << "green size    4:" << fmt.greenBufferSize();
+    qDebug() << "blue size     5:" << fmt.blueBufferSize();
+    qDebug() << "alpha size    6:" << fmt.alphaBufferSize();
+    qDebug() << "accum size    7:" << fmt.accumBufferSize();
+    qDebug() << "stencil size  8:" << fmt.stencilBufferSize();
+    qDebug() << "stereo        9:" << fmt.stereo();
+    qDebug() << "direct       10:" << fmt.directRendering();
+    qDebug() << "has overlays 11:" << fmt.hasOverlay();
+    qDebug() << "sample buff  12:" << fmt.sampleBuffers();
+    qDebug() << "num samples  13:" << fmt.samples();
+#endif
+    return fmt;
+}
+
+
+/*
+    QGLTemporaryContext implementation
+*/
+
+Q_GUI_EXPORT const QString qt_getRegisteredWndClass();
+
+class QGLTemporaryContextPrivate
+{
+public:
+    HDC dmy_pdc;
+    HGLRC dmy_rc;
+    HDC old_dc;
+    HGLRC old_context;
+    WId dmy_id;
+};
+
+QGLTemporaryContext::QGLTemporaryContext(bool directRendering, QWidget *parent)
+    : d(new QGLTemporaryContextPrivate)
+{
+    QString windowClassName = qt_getRegisteredWndClass();
+    if (parent && !parent->internalWinId())
+        parent = parent->nativeParentWidget();
+
+    d->dmy_id = CreateWindow((const wchar_t *)windowClassName.utf16(),
+                             0, 0, 0, 0, 1, 1,
+                             parent ? parent->winId() : 0, 0, qWinAppInst(), 0);
+
+    d->dmy_pdc = GetDC(d->dmy_id);
+    PIXELFORMATDESCRIPTOR dmy_pfd;
+    memset(&dmy_pfd, 0, sizeof(PIXELFORMATDESCRIPTOR));
+    dmy_pfd.nSize = sizeof(PIXELFORMATDESCRIPTOR);
+    dmy_pfd.nVersion = 1;
+    dmy_pfd.dwFlags = PFD_SUPPORT_OPENGL | PFD_DRAW_TO_WINDOW;
+    dmy_pfd.iPixelType = PFD_TYPE_RGBA;
+    if (!directRendering)
+        dmy_pfd.dwFlags |= PFD_GENERIC_FORMAT;
+
+    int dmy_pf = ChoosePixelFormat(d->dmy_pdc, &dmy_pfd);
+    SetPixelFormat(d->dmy_pdc, dmy_pf, &dmy_pfd);
+    d->dmy_rc = wglCreateContext(d->dmy_pdc);
+    d->old_dc = wglGetCurrentDC();
+    d->old_context = wglGetCurrentContext();
+    wglMakeCurrent(d->dmy_pdc, d->dmy_rc);
+}
+
+QGLTemporaryContext::~QGLTemporaryContext()
+{
+    wglMakeCurrent(d->dmy_pdc, 0);
+    wglDeleteContext(d->dmy_rc);
+    ReleaseDC(d->dmy_id, d->dmy_pdc);
+    DestroyWindow(d->dmy_id);
+    if (d->old_dc && d->old_context)
+        wglMakeCurrent(d->old_dc, d->old_context);
+}
+
+static bool qgl_create_context(HDC hdc, QGLContextPrivate *d, QGLContextPrivate *shareContext)
+{
+    d->rc = 0;
+
+    typedef HGLRC (APIENTRYP PFNWGLCREATECONTEXTATTRIBSARB)(HDC, HGLRC, const int *);
+    PFNWGLCREATECONTEXTATTRIBSARB wglCreateContextAttribsARB =
+        (PFNWGLCREATECONTEXTATTRIBSARB) wglGetProcAddress("wglCreateContextAttribsARB");
+    if (wglCreateContextAttribsARB) {
+        int attributes[11];
+        int attribIndex = 0;
+        const int major = d->reqFormat.majorVersion();
+        const int minor = d->reqFormat.minorVersion();
+        attributes[attribIndex++] = WGL_CONTEXT_MAJOR_VERSION_ARB;
+        attributes[attribIndex++] = major;
+        attributes[attribIndex++] = WGL_CONTEXT_MINOR_VERSION_ARB;
+        attributes[attribIndex++] = minor;
+
+        if (major >= 3 && !d->reqFormat.testOption(QGL::DeprecatedFunctions)) {
+            attributes[attribIndex++] = WGL_CONTEXT_FLAGS_ARB;
+            attributes[attribIndex++] = WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB;
+        }
+
+        if ((major == 3 && minor >= 2) || major > 3) {
+            switch (d->reqFormat.profile()) {
+            case QGLFormat::NoProfile:
+                break;
+            case QGLFormat::CoreProfile:
+                attributes[attribIndex++] = WGL_CONTEXT_PROFILE_MASK_ARB;
+                attributes[attribIndex++] = WGL_CONTEXT_CORE_PROFILE_BIT_ARB;
+                break;
+            case QGLFormat::CompatibilityProfile:
+                attributes[attribIndex++] = WGL_CONTEXT_PROFILE_MASK_ARB;
+                attributes[attribIndex++] = WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB;
+                break;
+            default:
+                qWarning("QGLContext::chooseContext(): Context profile not supported.");
+                return false;
+            }
+        }
+
+        if (d->reqFormat.plane() != 0) {
+            attributes[attribIndex++] = WGL_CONTEXT_LAYER_PLANE_ARB;
+            attributes[attribIndex++] = d->reqFormat.plane();
+        }
+
+        attributes[attribIndex++] = 0; // Terminate list.
+        d->rc = wglCreateContextAttribsARB(hdc, shareContext && shareContext->valid
+                                           ? shareContext->rc : 0, attributes);
+        if (d->rc) {
+            if (shareContext)
+                shareContext->sharing = d->sharing = true;
+            return true;
+        }
+    }
+
+    d->rc = wglCreateLayerContext(hdc, d->reqFormat.plane());
+    if (d->rc && shareContext && shareContext->valid)
+        shareContext->sharing = d->sharing = wglShareLists(shareContext->rc, d->rc);
+    return d->rc != 0;
+}
+
+void QGLContextPrivate::updateFormatVersion()
+{
+    const GLubyte *s = glGetString(GL_VERSION);
+
+    if (!(s && s[0] >= '0' && s[0] <= '9' && s[1] == '.' && s[2] >= '0' && s[2] <= '9')) {
+        if (!s)
+            qWarning("QGLContext::chooseContext(): OpenGL version string is null.");
+        else
+            qWarning("QGLContext::chooseContext(): Unexpected OpenGL version string format.");
+        glFormat.setVersion(0, 0);
+        glFormat.setProfile(QGLFormat::NoProfile);
+        glFormat.setOption(QGL::DeprecatedFunctions);
+        return;
+    }
+
+    int major = s[0] - '0';
+    int minor = s[2] - '0';
+    glFormat.setVersion(major, minor);
+
+    if (major < 3) {
+        glFormat.setProfile(QGLFormat::NoProfile);
+        glFormat.setOption(QGL::DeprecatedFunctions);
+    } else {
+        GLint value = 0;
+        if (major > 3 || minor >= 2)
+            glGetIntegerv(GL_CONTEXT_PROFILE_MASK, &value);
+
+        switch (value) {
+        case WGL_CONTEXT_CORE_PROFILE_BIT_ARB:
+            glFormat.setProfile(QGLFormat::CoreProfile);
+            break;
+        case WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB:
+            glFormat.setProfile(QGLFormat::CompatibilityProfile);
+            break;
+        default:
+            glFormat.setProfile(QGLFormat::NoProfile);
+            break;
+        }
+
+        glGetIntegerv(GL_CONTEXT_FLAGS, &value);
+        if (value & GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT)
+            glFormat.setOption(QGL::NoDeprecatedFunctions);
+        else
+            glFormat.setOption(QGL::DeprecatedFunctions);
+    }
+}
+
+bool QGLContext::chooseContext(const QGLContext* shareContext)
+{
+    QGLContextPrivate *share = shareContext ? const_cast<QGLContext *>(shareContext)->d_func() : 0;
+
+    Q_D(QGLContext);
+    // workaround for matrox driver:
+    // make a cheap call to opengl to force loading of DLL
+    if (!opengl32dll) {
+        GLint params;
+        glGetIntegerv(GL_DEPTH_BITS, &params);
+        opengl32dll = true;
+    }
+
+    bool result = true;
+    HDC myDc;
+    QWidget *widget = 0;
+
+    if (deviceIsPixmap()) {
+        if (d->glFormat.plane())
+            return false;                // Pixmaps can't have overlay
+        d->win = 0;
+        HDC display_dc = GetDC(0);
+        myDc = d->hbitmap_hdc = CreateCompatibleDC(display_dc);
+        QPixmap *px = static_cast<QPixmap *>(d->paintDevice);
+
+        BITMAPINFO bmi;
+        memset(&bmi, 0, sizeof(bmi));
+        bmi.bmiHeader.biSize        = sizeof(BITMAPINFOHEADER);
+        bmi.bmiHeader.biWidth       = px->width();
+        bmi.bmiHeader.biHeight      = px->height();
+        bmi.bmiHeader.biPlanes      = 1;
+        bmi.bmiHeader.biBitCount    = 32;
+        bmi.bmiHeader.biCompression = BI_RGB;
+        d->hbitmap = CreateDIBSection(display_dc, &bmi, DIB_RGB_COLORS, 0, 0, 0);
+        SelectObject(myDc, d->hbitmap);
+        ReleaseDC(0, display_dc);
+    } else {
+        widget = static_cast<QWidget *>(d->paintDevice);
+        d->win = widget->winId();
+        myDc = GetDC(d->win);
+    }
+
+    // NB! the QGLTemporaryContext object is needed for the
+    // wglGetProcAddress() calls to succeed and are absolutely
+    // necessary - don't remove!
+    QGLTemporaryContext tmp_ctx(d->glFormat.directRendering(), widget);
+
+    if (!myDc) {
+        qWarning("QGLContext::chooseContext(): Paint device cannot be null");
+        result = false;
+        goto end;
+    }
+
+    if (d->glFormat.plane()) {
+        d->pixelFormatId = ((QGLWidget*)d->paintDevice)->context()->d_func()->pixelFormatId;
+        if (!d->pixelFormatId) {                // I.e. the glwidget is invalid
+            qWarning("QGLContext::chooseContext(): Cannot create overlay context for invalid widget");
+            result = false;
+            goto end;
+        }
+
+        if (!qgl_create_context(myDc, d, share)) {
+            qwglError("QGLContext::chooseContext()", "CreateLayerContext");
+            result = false;
+            goto end;
+        }
+
+        LAYERPLANEDESCRIPTOR lpfd;
+        wglDescribeLayerPlane(myDc, d->pixelFormatId, d->glFormat.plane(), sizeof(LAYERPLANEDESCRIPTOR), &lpfd);
+        d->glFormat.setDoubleBuffer(lpfd.dwFlags & LPD_DOUBLEBUFFER);
+        d->glFormat.setDepth(lpfd.cDepthBits);
+        d->glFormat.setRgba(lpfd.iPixelType == PFD_TYPE_RGBA);
+        if (d->glFormat.rgba()) {
+            if (d->glFormat.redBufferSize() != -1)
+                d->glFormat.setRedBufferSize(lpfd.cRedBits);
+            if (d->glFormat.greenBufferSize() != -1)
+                d->glFormat.setGreenBufferSize(lpfd.cGreenBits);
+            if (d->glFormat.blueBufferSize() != -1)
+                d->glFormat.setBlueBufferSize(lpfd.cBlueBits);
+        }
+        d->glFormat.setAlpha(lpfd.cAlphaBits);
+        d->glFormat.setAccum(lpfd.cAccumBits);
+        d->glFormat.setStencil(lpfd.cStencilBits);
+        d->glFormat.setStereo(lpfd.dwFlags & LPD_STEREO);
+        d->glFormat.setDirectRendering(false);
+        if (d->glFormat.depth())
+            d->glFormat.setDepthBufferSize(lpfd.cDepthBits);
+        if (d->glFormat.alpha())
+            d->glFormat.setAlphaBufferSize(lpfd.cAlphaBits);
+        if (d->glFormat.accum())
+            d->glFormat.setAccumBufferSize(lpfd.cAccumRedBits);
+        if (d->glFormat.stencil())
+            d->glFormat.setStencilBufferSize(lpfd.cStencilBits);
+
+        if (d->glFormat.rgba()) {
+            if (lpfd.dwFlags & LPD_TRANSPARENT)
+                d->transpColor = QColor(lpfd.crTransparent & 0xff,
+                                        (lpfd.crTransparent >> 8) & 0xff,
+                                        (lpfd.crTransparent >> 16) & 0xff);
+            else
+                d->transpColor = QColor(0, 0, 0);
+        }
+        else {
+            if (lpfd.dwFlags & LPD_TRANSPARENT)
+                d->transpColor = QColor(qRgb(1, 2, 3));//, lpfd.crTransparent);
+            else
+                d->transpColor = QColor(qRgb(1, 2, 3));//, 0);
+
+            d->cmap = new QGLCmap(1 << lpfd.cColorBits);
+            d->cmap->setEntry(lpfd.crTransparent, qRgb(1, 2, 3));//, QGLCmap::Reserved);
+        }
+    } else {
+        PIXELFORMATDESCRIPTOR pfd;
+        PIXELFORMATDESCRIPTOR realPfd;
+        d->pixelFormatId = choosePixelFormat(&pfd, myDc);
+        if (d->pixelFormatId == 0) {
+            qwglError("QGLContext::chooseContext()", "ChoosePixelFormat");
+            result = false;
+            goto end;
+        }
+
+        bool overlayRequested = d->glFormat.hasOverlay();
+        DescribePixelFormat(myDc, d->pixelFormatId, sizeof(PIXELFORMATDESCRIPTOR), &realPfd);
+
+        if (!deviceIsPixmap() && wglGetProcAddress("wglGetPixelFormatAttribivARB"))
+            d->glFormat = pfiToQGLFormat(myDc, d->pixelFormatId);
+        else
+            d->glFormat = pfdToQGLFormat(&realPfd);
+
+        d->glFormat.setOverlay(d->glFormat.hasOverlay() && overlayRequested);
+
+        if (deviceIsPixmap() && !(realPfd.dwFlags & PFD_DRAW_TO_BITMAP)) {
+            qWarning("QGLContext::chooseContext(): Failed to get pixmap rendering context.");
+            result = false;
+            goto end;
+        }
+
+        if (deviceIsPixmap() &&
+            (((QPixmap*)d->paintDevice)->depth() != realPfd.cColorBits)) {
+            qWarning("QGLContext::chooseContext(): Failed to get pixmap rendering context of suitable depth.");
+            result = false;
+            goto end;
+        }
+
+        if (!SetPixelFormat(myDc, d->pixelFormatId, &realPfd)) {
+            qwglError("QGLContext::chooseContext()", "SetPixelFormat");
+            result = false;
+            goto end;
+        }
+
+        if (!qgl_create_context(myDc, d, share)) {
+            qwglError("QGLContext::chooseContext()", "wglCreateContext");
+            result = false;
+            goto end;
+        }
+
+        if(!deviceIsPixmap()) {
+            QRgb* pal = qgl_create_rgb_palette(&realPfd);
+            if (pal) {
+                QGLColormap cmap;
+                cmap.setEntries(256, pal);
+                ((QGLWidget*)d->paintDevice)->setColormap(cmap);
+                delete[] pal;
+            }
+        }
+    }
+
+end:
+    // vblanking
+    wglMakeCurrent(myDc, d->rc);
+    if (d->rc)
+        d->updateFormatVersion();
+
+    typedef BOOL (APIENTRYP PFNWGLSWAPINTERVALEXT) (int interval);
+    typedef int (APIENTRYP PFNWGLGETSWAPINTERVALEXT) (void);
+    PFNWGLSWAPINTERVALEXT wglSwapIntervalEXT = (PFNWGLSWAPINTERVALEXT) wglGetProcAddress("wglSwapIntervalEXT");
+    PFNWGLGETSWAPINTERVALEXT wglGetSwapIntervalEXT = (PFNWGLGETSWAPINTERVALEXT) wglGetProcAddress("wglGetSwapIntervalEXT");
+    if (wglSwapIntervalEXT && wglGetSwapIntervalEXT) {
+        if (d->reqFormat.swapInterval() != -1)
+            wglSwapIntervalEXT(d->reqFormat.swapInterval());
+        d->glFormat.setSwapInterval(wglGetSwapIntervalEXT());
+    }
+
+    if (d->win)
+        ReleaseDC(d->win, myDc);
+    return result;
+}
+
+
+
+static bool qLogEq(bool a, bool b)
+{
+    return (((!a) && (!b)) || (a && b));
+}
+
+/*
+  See qgl.cpp for qdoc comment.
+ */
+int QGLContext::choosePixelFormat(void* dummyPfd, HDC pdc)
+{
+    Q_D(QGLContext);
+    // workaround for matrox driver:
+    // make a cheap call to opengl to force loading of DLL
+    if (!opengl32dll) {
+        GLint params;
+        glGetIntegerv(GL_DEPTH_BITS, &params);
+        opengl32dll = true;
+    }
+
+    PFNWGLCHOOSEPIXELFORMATARB wglChoosePixelFormatARB =
+        (PFNWGLCHOOSEPIXELFORMATARB) wglGetProcAddress("wglChoosePixelFormatARB");
+    int chosenPfi = 0;
+    if (!deviceIsPixmap() && wglChoosePixelFormatARB) {
+        bool valid;
+        int pixelFormat = 0;
+        uint numFormats = 0;
+        QVarLengthArray<int> iAttributes(40);
+        int i = 0;
+        iAttributes[i++] = WGL_ACCELERATION_ARB;
+        if (d->glFormat.directRendering())
+            iAttributes[i++] = WGL_FULL_ACCELERATION_ARB;
+        else
+            iAttributes[i++] = WGL_NO_ACCELERATION_ARB;
+        iAttributes[i++] = WGL_SUPPORT_OPENGL_ARB;
+        iAttributes[i++] = TRUE;
+        iAttributes[i++] = WGL_DRAW_TO_WINDOW_ARB;
+        iAttributes[i++] = TRUE;
+        iAttributes[i++] = WGL_COLOR_BITS_ARB;
+        iAttributes[i++] = 24;
+        iAttributes[i++] = WGL_DOUBLE_BUFFER_ARB;
+        iAttributes[i++] = d->glFormat.doubleBuffer();
+        if (d->glFormat.stereo()) {
+            iAttributes[i++] = WGL_STEREO_ARB;
+            iAttributes[i++] = TRUE;
+        }
+        if (d->glFormat.depth()) {
+            iAttributes[i++] = WGL_DEPTH_BITS_ARB;
+            iAttributes[i++] = d->glFormat.depthBufferSize() == -1 ? 24 : d->glFormat.depthBufferSize();
+        }
+        iAttributes[i++] = WGL_PIXEL_TYPE_ARB;
+        if (d->glFormat.rgba()) {
+            iAttributes[i++] = WGL_TYPE_RGBA_ARB;
+            if (d->glFormat.redBufferSize() != -1) {
+                iAttributes[i++] = WGL_RED_BITS_ARB;
+                iAttributes[i++] = d->glFormat.redBufferSize();
+            }
+            if (d->glFormat.greenBufferSize() != -1) {
+                iAttributes[i++] = WGL_GREEN_BITS_ARB;
+                iAttributes[i++] = d->glFormat.greenBufferSize();
+            }
+            if (d->glFormat.blueBufferSize() != -1) {
+                iAttributes[i++] = WGL_BLUE_BITS_ARB;
+                iAttributes[i++] = d->glFormat.blueBufferSize();
+            }
+        } else {
+            iAttributes[i++] = WGL_TYPE_COLORINDEX_ARB;
+        }
+        if (d->glFormat.alpha()) {
+            iAttributes[i++] = WGL_ALPHA_BITS_ARB;
+            iAttributes[i++] = d->glFormat.alphaBufferSize() == -1 ? 8 : d->glFormat.alphaBufferSize();
+        }
+        if (d->glFormat.accum()) {
+            iAttributes[i++] = WGL_ACCUM_BITS_ARB;
+            iAttributes[i++] = d->glFormat.accumBufferSize() == -1 ? 16 : d->glFormat.accumBufferSize();
+        }
+        if (d->glFormat.stencil()) {
+            iAttributes[i++] = WGL_STENCIL_BITS_ARB;
+            iAttributes[i++] = d->glFormat.stencilBufferSize() == -1 ? 8 : d->glFormat.stencilBufferSize();
+        }
+        if (d->glFormat.hasOverlay()) {
+            iAttributes[i++] = WGL_NUMBER_OVERLAYS_ARB;
+            iAttributes[i++] = 1;
+        }
+        int si = 0;
+        bool trySampleBuffers = QGLExtensions::glExtensions() & QGLExtensions::SampleBuffers;
+        if (trySampleBuffers && d->glFormat.sampleBuffers()) {
+            iAttributes[i++] = WGL_SAMPLE_BUFFERS_ARB;
+            iAttributes[i++] = TRUE;
+            iAttributes[i++] = WGL_SAMPLES_ARB;
+            si = i;
+            iAttributes[i++] = d->glFormat.samples() == -1 ? 4 : d->glFormat.samples();
+        }
+        iAttributes[i] = 0;
+
+        do {
+            valid = wglChoosePixelFormatARB(pdc, iAttributes.constData(), 0, 1,
+                                            &pixelFormat, &numFormats);
+            if (trySampleBuffers  && (!valid || numFormats < 1) && d->glFormat.sampleBuffers())
+                iAttributes[si] /= 2; // try different no. samples - we aim for the best one
+            else
+                break;
+        } while ((!valid || numFormats < 1) && iAttributes[si] > 1);
+        chosenPfi = pixelFormat;
+    }
+
+    if (!chosenPfi) { // fallback if wglChoosePixelFormatARB() failed
+        int pmDepth = deviceIsPixmap() ? ((QPixmap*)d->paintDevice)->depth() : 0;
+        PIXELFORMATDESCRIPTOR* p = (PIXELFORMATDESCRIPTOR*)dummyPfd;
+        memset(p, 0, sizeof(PIXELFORMATDESCRIPTOR));
+        p->nSize = sizeof(PIXELFORMATDESCRIPTOR);
+        p->nVersion = 1;
+        p->dwFlags  = PFD_SUPPORT_OPENGL;
+        if (deviceIsPixmap())
+            p->dwFlags |= PFD_DRAW_TO_BITMAP;
+        else
+            p->dwFlags |= PFD_DRAW_TO_WINDOW;
+        if (!d->glFormat.directRendering())
+            p->dwFlags |= PFD_GENERIC_FORMAT;
+        if (d->glFormat.doubleBuffer() && !deviceIsPixmap())
+            p->dwFlags |= PFD_DOUBLEBUFFER;
+        if (d->glFormat.stereo())
+            p->dwFlags |= PFD_STEREO;
+        if (d->glFormat.depth())
+            p->cDepthBits = d->glFormat.depthBufferSize() == -1 ? 32 : d->glFormat.depthBufferSize();
+        else
+            p->dwFlags |= PFD_DEPTH_DONTCARE;
+        if (d->glFormat.rgba()) {
+            p->iPixelType = PFD_TYPE_RGBA;
+            if (d->glFormat.redBufferSize() != -1)
+                p->cRedBits = d->glFormat.redBufferSize();
+            if (d->glFormat.greenBufferSize() != -1)
+                p->cGreenBits = d->glFormat.greenBufferSize();
+            if (d->glFormat.blueBufferSize() != -1)
+                p->cBlueBits = d->glFormat.blueBufferSize();
+            if (deviceIsPixmap())
+                p->cColorBits = pmDepth;
+            else
+                p->cColorBits = 32;
+        } else {
+            p->iPixelType = PFD_TYPE_COLORINDEX;
+            p->cColorBits = 8;
+        }
+        if (d->glFormat.alpha())
+            p->cAlphaBits = d->glFormat.alphaBufferSize() == -1 ? 8 : d->glFormat.alphaBufferSize();
+        if (d->glFormat.accum()) {
+            p->cAccumRedBits = p->cAccumGreenBits = p->cAccumBlueBits = p->cAccumAlphaBits =
+                               d->glFormat.accumBufferSize() == -1 ? 16 : d->glFormat.accumBufferSize();
+        }
+        if (d->glFormat.stencil())
+            p->cStencilBits = d->glFormat.stencilBufferSize() == -1 ? 8 : d->glFormat.stencilBufferSize();
+        p->iLayerType = PFD_MAIN_PLANE;
+        chosenPfi = ChoosePixelFormat(pdc, p);
+
+        if (!chosenPfi)
+            qErrnoWarning("QGLContext: ChoosePixelFormat failed");
+
+        // Since the GDI function ChoosePixelFormat() does not handle
+        // overlay and direct-rendering requests, we must roll our own here
+
+        bool doSearch = chosenPfi <= 0;
+        PIXELFORMATDESCRIPTOR pfd;
+        QGLFormat fmt;
+        if (!doSearch) {
+            DescribePixelFormat(pdc, chosenPfi, sizeof(PIXELFORMATDESCRIPTOR),
+                                &pfd);
+            fmt = pfdToQGLFormat(&pfd);
+            if (d->glFormat.hasOverlay() && !fmt.hasOverlay())
+                doSearch = true;
+            else if (!qLogEq(d->glFormat.directRendering(), fmt.directRendering()))
+                doSearch = true;
+            else if (deviceIsPixmap() && (!(pfd.dwFlags & PFD_DRAW_TO_BITMAP) ||
+                                          pfd.cColorBits != pmDepth))
+                doSearch = true;
+            else if (!deviceIsPixmap() && !(pfd.dwFlags & PFD_DRAW_TO_WINDOW))
+                doSearch = true;
+            else if (!qLogEq(d->glFormat.rgba(), fmt.rgba()))
+                doSearch = true;
+        }
+
+        if (doSearch) {
+            int pfiMax = DescribePixelFormat(pdc, 0, 0, NULL);
+            int bestScore = -1;
+            int bestPfi = -1;
+            for (int pfi = 1; pfi <= pfiMax; pfi++) {
+                DescribePixelFormat(pdc, pfi, sizeof(PIXELFORMATDESCRIPTOR), &pfd);
+                if (!(pfd.dwFlags & PFD_SUPPORT_OPENGL))
+                    continue;
+                if (deviceIsPixmap() && (!(pfd.dwFlags & PFD_DRAW_TO_BITMAP) ||
+                                         pfd.cColorBits != pmDepth))
+                    continue;
+                if (!deviceIsPixmap() && !(pfd.dwFlags & PFD_DRAW_TO_WINDOW))
+                    continue;
+
+                fmt = pfdToQGLFormat(&pfd);
+                if (d->glFormat.hasOverlay() && !fmt.hasOverlay())
+                    continue;
+
+                int score = pfd.cColorBits;
+                if (qLogEq(d->glFormat.depth(), fmt.depth()))
+                    score += pfd.cDepthBits;
+                if (qLogEq(d->glFormat.alpha(), fmt.alpha()))
+                    score += pfd.cAlphaBits;
+                if (qLogEq(d->glFormat.accum(), fmt.accum()))
+                    score += pfd.cAccumBits;
+                if (qLogEq(d->glFormat.stencil(), fmt.stencil()))
+                    score += pfd.cStencilBits;
+                if (qLogEq(d->glFormat.doubleBuffer(), fmt.doubleBuffer()))
+                    score += 1000;
+                if (qLogEq(d->glFormat.stereo(), fmt.stereo()))
+                    score += 2000;
+                if (qLogEq(d->glFormat.directRendering(), fmt.directRendering()))
+                    score += 4000;
+                if (qLogEq(d->glFormat.rgba(), fmt.rgba()))
+                    score += 8000;
+                if (score > bestScore) {
+                    bestScore = score;
+                    bestPfi = pfi;
+                }
+            }
+
+            if (bestPfi > 0)
+                chosenPfi = bestPfi;
+        }
+    }
+    return chosenPfi;
+}
+
+
+
+void QGLContext::reset()
+{
+    Q_D(QGLContext);
+    // workaround for matrox driver:
+    // make a cheap call to opengl to force loading of DLL
+    if (!opengl32dll) {
+        GLint params;
+        glGetIntegerv(GL_DEPTH_BITS, &params);
+        opengl32dll = true;
+    }
+
+    if (!d->valid)
+        return;
+    d->cleanup();
+    doneCurrent();
+    if (d->rc)
+        wglDeleteContext(d->rc);
+    d->rc  = 0;
+    if (d->win && d->dc)
+        ReleaseDC(d->win, d->dc);
+    if (deviceIsPixmap()) {
+        DeleteDC(d->hbitmap_hdc);
+        DeleteObject(d->hbitmap);
+        d->hbitmap_hdc = 0;
+        d->hbitmap = 0;
+    }
+    d->dc  = 0;
+    d->win = 0;
+    d->threadId = 0;
+    d->pixelFormatId = 0;
+    d->sharing = false;
+    d->valid = false;
+    d->transpColor = QColor();
+    delete d->cmap;
+    d->cmap = 0;
+    d->initDone = false;
+    QGLContextGroup::removeShare(this);
+}
+
+//
+// NOTE: In a multi-threaded environment, each thread has a current
+// context. If we want to make this code thread-safe, we probably
+// have to use TLS (thread local storage) for keeping current contexts.
+//
+
+void QGLContext::makeCurrent()
+{
+    Q_D(QGLContext);
+    if (d->rc == wglGetCurrentContext() || !d->valid)       // already current
+        return;
+
+    if (d->win && (!d->dc || d->threadId != QThread::currentThreadId())) {
+        d->dc = GetDC(d->win);
+        d->threadId = QThread::currentThreadId();
+        if (!d->dc) {
+            qwglError("QGLContext::makeCurrent()", "GetDC()");
+            return;
+        }
+    } else if (deviceIsPixmap()) {
+        d->dc = d->hbitmap_hdc;
+    }
+
+    HPALETTE hpal = QColormap::hPal();
+    if (hpal) {
+        SelectPalette(d->dc, hpal, FALSE);
+        RealizePalette(d->dc);
+    }
+    if (d->glFormat.plane()) {
+        wglRealizeLayerPalette(d->dc, d->glFormat.plane(), TRUE);
+    }
+
+    if (wglMakeCurrent(d->dc, d->rc)) {
+        QGLContextPrivate::setCurrentContext(this);
+    } else {
+        qwglError("QGLContext::makeCurrent()", "wglMakeCurrent");
+    }
+}
+
+
+void QGLContext::doneCurrent()
+{
+    Q_D(QGLContext);
+    wglMakeCurrent(0, 0);
+    QGLContextPrivate::setCurrentContext(0);
+    if (deviceIsPixmap() && d->hbitmap) {
+        QPixmap *pm = static_cast<QPixmap *>(d->paintDevice);
+        *pm = QPixmap::fromWinHBITMAP(d->hbitmap);
+    }
+    if (d->win && d->dc) {
+        ReleaseDC(d->win, d->dc);
+        d->dc = 0;
+        d->threadId = 0;
+    }
+}
+
+void QGLContext::swapBuffers() const
+{
+    Q_D(const QGLContext);
+    if (d->dc && d->glFormat.doubleBuffer() && !deviceIsPixmap()) {
+        if (d->glFormat.plane())
+            wglSwapLayerBuffers(d->dc, WGL_SWAP_OVERLAY1);
+        else {
+            if (d->glFormat.hasOverlay())
+                wglSwapLayerBuffers(d->dc, WGL_SWAP_MAIN_PLANE);
+            else
+                SwapBuffers(d->dc);
+        }
+    }
+}
+
+
+QColor QGLContext::overlayTransparentColor() const
+{
+    return d_func()->transpColor;
+}
+
+
+uint QGLContext::colorIndex(const QColor& c) const
+{
+    Q_D(const QGLContext);
+    if (!isValid())
+        return 0;
+    if (d->cmap) {
+        int idx = d->cmap->find(c.rgb());
+        if (idx >= 0)
+            return idx;
+        if (d->dc && d->glFormat.plane()) {
+            idx = d->cmap->allocate(c.rgb());
+            if (idx >= 0) {
+                COLORREF r = RGB(qRed(c.rgb()),qGreen(c.rgb()),qBlue(c.rgb()));
+                wglSetLayerPaletteEntries(d->dc, d->glFormat.plane(), idx, 1, &r);
+                wglRealizeLayerPalette(d->dc, d->glFormat.plane(), TRUE);
+                return idx;
+            }
+        }
+        return d->cmap->findNearest(c.rgb());
+    }
+    QColormap cmap = QColormap::instance();
+    return cmap.pixel(c) & 0x00ffffff; // Assumes standard palette
+}
+
+void QGLContext::generateFontDisplayLists(const QFont & fnt, int listBase)
+{
+    if (!isValid())
+        return;
+
+    HDC display_dc = GetDC(0);
+    HDC tmp_dc = CreateCompatibleDC(display_dc);
+    HGDIOBJ old_font = SelectObject(tmp_dc, fnt.handle());
+
+    ReleaseDC(0, display_dc);
+
+    if (!wglUseFontBitmaps(tmp_dc, 0, 256, listBase))
+        qWarning("QGLContext::generateFontDisplayLists: Could not generate display lists for font '%s'", fnt.family().toLatin1().data());
+
+    SelectObject(tmp_dc, old_font);
+    DeleteDC(tmp_dc);
+}
+
+void *QGLContext::getProcAddress(const QString &proc) const
+{
+    return (void *)wglGetProcAddress(proc.toLatin1());
+}
+
+/*****************************************************************************
+  QGLWidget Win32/WGL-specific code
+ *****************************************************************************/
+
+void QGLWidgetPrivate::init(QGLContext *ctx, const QGLWidget* shareWidget)
+{
+    Q_Q(QGLWidget);
+    olcx = 0;
+    initContext(ctx, shareWidget);
+
+    if (q->isValid() && q->context()->format().hasOverlay()) {
+        olcx = new QGLContext(QGLFormat::defaultOverlayFormat(), q);
+        if (!olcx->create(shareWidget ? shareWidget->overlayContext() : 0)) {
+            delete olcx;
+            olcx = 0;
+            glcx->d_func()->glFormat.setOverlay(false);
+        }
+    } else {
+        olcx = 0;
+    }
+}
+
+/*\internal
+  Store color values in the given colormap.
+*/
+static void qStoreColors(HPALETTE cmap, const QGLColormap & cols)
+{
+    QRgb color;
+    PALETTEENTRY pe;
+
+    for (int i = 0; i < cols.size(); i++) {
+        color = cols.entryRgb(i);
+        pe.peRed   = qRed(color);
+        pe.peGreen = qGreen(color);
+        pe.peBlue  = qBlue(color);
+        pe.peFlags = 0;
+
+        SetPaletteEntries(cmap, i, 1, &pe);
+    }
+}
+
+void QGLWidgetPrivate::updateColormap()
+{
+    Q_Q(QGLWidget);
+    if (!cmap.handle())
+        return;
+    HDC hdc = GetDC(q->winId());
+    SelectPalette(hdc, (HPALETTE) cmap.handle(), TRUE);
+    qStoreColors((HPALETTE) cmap.handle(), cmap);
+    RealizePalette(hdc);
+    ReleaseDC(q->winId(), hdc);
+}
+
+void QGLWidget::setMouseTracking(bool enable)
+{
+    QWidget::setMouseTracking(enable);
+}
+
+
+void QGLWidget::resizeEvent(QResizeEvent *)
+{
+    Q_D(QGLWidget);
+    if (!isValid())
+        return;
+    makeCurrent();
+    if (!d->glcx->initialized())
+        glInit();
+    resizeGL(width(), height());
+    if (d->olcx) {
+        makeOverlayCurrent();
+        resizeOverlayGL(width(), height());
+    }
+}
+
+
+const QGLContext* QGLWidget::overlayContext() const
+{
+    return d_func()->olcx;
+}
+
+
+void QGLWidget::makeOverlayCurrent()
+{
+    Q_D(QGLWidget);
+    if (d->olcx) {
+        d->olcx->makeCurrent();
+        if (!d->olcx->initialized()) {
+            initializeOverlayGL();
+            d->olcx->setInitialized(true);
+        }
+    }
+}
+
+
+void QGLWidget::updateOverlayGL()
+{
+    Q_D(QGLWidget);
+    if (d->olcx) {
+        makeOverlayCurrent();
+        paintOverlayGL();
+        if (d->olcx->format().doubleBuffer()) {
+            if (d->autoSwap)
+                d->olcx->swapBuffers();
+        }
+        else {
+            glFlush();
+        }
+    }
+}
+
+
+void QGLWidget::setContext(QGLContext *context,
+                            const QGLContext* shareContext,
+                            bool deleteOldContext)
+{
+    Q_D(QGLWidget);
+    if (context == 0) {
+        qWarning("QGLWidget::setContext: Cannot set null context");
+        return;
+    }
+    if (!context->deviceIsPixmap() && context->device() != this) {
+        qWarning("QGLWidget::setContext: Context must refer to this widget");
+        return;
+    }
+
+    if (d->glcx)
+        d->glcx->doneCurrent();
+    QGLContext* oldcx = d->glcx;
+    d->glcx = context;
+
+    bool doShow = false;
+    if (oldcx && oldcx->d_func()->win == winId() && !d->glcx->deviceIsPixmap()) {
+        // We already have a context and must therefore create a new
+        // window since Windows does not permit setting a new OpenGL
+        // context for a window that already has one set.
+        doShow = isVisible();
+        QWidget *pW = static_cast<QWidget *>(parent());
+        QPoint pos = geometry().topLeft();
+        setParent(pW, windowFlags());
+        move(pos);
+    }
+
+    if (!d->glcx->isValid()) {
+        bool wasSharing = shareContext || (oldcx && oldcx->isSharing());
+        d->glcx->create(shareContext ? shareContext : oldcx);
+        // the above is a trick to keep disp lists etc when a
+        // QGLWidget has been reparented, so remove the sharing
+        // flag if we don't actually have a sharing context.
+        if (!wasSharing)
+            d->glcx->d_ptr->sharing = false;
+    }
+
+    if (deleteOldContext)
+        delete oldcx;
+
+    if (doShow)
+        show();
+}
+
+
+bool QGLWidgetPrivate::renderCxPm(QPixmap*)
+{
+    return false;
+}
+
+void QGLWidgetPrivate::cleanupColormaps()
+{
+    Q_Q(QGLWidget);
+    if (cmap.handle()) {
+        HDC hdc = GetDC(q->winId());
+        SelectPalette(hdc, (HPALETTE) GetStockObject(DEFAULT_PALETTE), FALSE);
+        DeleteObject((HPALETTE) cmap.handle());
+        ReleaseDC(q->winId(), hdc);
+        cmap.setHandle(0);
+    }
+    return;
+}
+
+const QGLColormap & QGLWidget::colormap() const
+{
+    return d_func()->cmap;
+}
+
+void QGLWidget::setColormap(const QGLColormap & c)
+{
+    Q_D(QGLWidget);
+    d->cmap = c;
+
+    if (d->cmap.handle()) { // already have an allocated cmap
+        d->updateColormap();
+    } else {
+        LOGPALETTE *lpal = (LOGPALETTE *) malloc(sizeof(LOGPALETTE)
+                                                 +c.size()*sizeof(PALETTEENTRY));
+        lpal->palVersion    = 0x300;
+        lpal->palNumEntries = c.size();
+        d->cmap.setHandle(CreatePalette(lpal));
+        free(lpal);
+        d->updateColormap();
+    }
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/qgl_wince.cpp b/src/opengl/qgl_wince.cpp
new file mode 100644
index 0000000000..e1989f9f2f
--- /dev/null
+++ b/src/opengl/qgl_wince.cpp
@@ -0,0 +1,636 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+
+#include <qgl.h>
+#include <qlist.h>
+#include <qmap.h>
+#include <qpixmap.h>
+#include <qevent.h>
+#include <private/qgl_p.h>
+#include <qcolormap.h>
+#include <qvarlengtharray.h>
+#include <qdebug.h>
+#include <qapplication.h>
+#include <qdesktopwidget>
+
+#include <windows.h>
+
+#include <private/qeglproperties_p.h>
+#include <private/qeglcontext_p.h>
+#include <private/qgl_egl_p.h>
+
+
+QT_BEGIN_NAMESPACE
+
+
+
+class QGLCmapPrivate
+{
+public:
+    QGLCmapPrivate() : count(1) { }
+    void ref()                { ++count; }
+    bool deref()        { return !--count; }
+    uint count;
+
+    enum AllocState{ UnAllocated = 0, Allocated = 0x01, Reserved = 0x02 };
+
+    int maxSize;
+    QVector<uint> colorArray;
+    QVector<quint8> allocArray;
+    QVector<quint8> contextArray;
+    QMap<uint,int> colorMap;
+};
+
+/*****************************************************************************
+  QColorMap class - temporarily here, until it is ready for prime time
+ *****************************************************************************/
+
+/****************************************************************************
+**
+** Definition of QColorMap class
+**
+****************************************************************************/
+
+#ifndef QGLCMAP_H
+#define QGLCMAP_H
+
+#include <qcolor.h>
+
+/*
+    QGLTemporaryContext implementation
+*/
+
+class QGLTemporaryContextPrivate
+{
+public:
+    QGLWidget *widget;
+};
+
+QGLTemporaryContext::QGLTemporaryContext(bool, QWidget *)
+    : d(new QGLTemporaryContextPrivate)
+{
+    d->widget = new QGLWidget;
+    d->widget->makeCurrent();
+}
+
+QGLTemporaryContext::~QGLTemporaryContext()
+{
+    delete d->widget;
+}
+
+/*****************************************************************************
+  QGLFormat Win32/WGL-specific code
+ *****************************************************************************/
+
+static bool opengl32dll = false;
+
+bool QGLFormat::hasOpenGLOverlays()
+{
+    return false; // ###
+}
+
+
+bool QGLContext::chooseContext(const QGLContext* shareContext)
+{
+        Q_D(QGLContext);
+
+    // Validate the device.
+    if (!device())
+        return false;
+    int devType = device()->devType();
+    if (devType != QInternal::Pixmap && devType != QInternal::Image && devType != QInternal::Widget) {
+        qWarning("QGLContext::chooseContext(): Cannot create QGLContext's for paint device type %d", devType);
+        return false;
+    }
+
+    // Get the display and initialize it.
+    d->eglContext = new QEglContext();
+    d->ownsEglContext = true;
+    d->eglContext->setApi(QEgl::OpenGL);
+
+    // Construct the configuration we need for this surface.
+    QEglProperties configProps;
+    qt_eglproperties_set_glformat(configProps, d->glFormat);
+    configProps.setDeviceType(devType);
+    configProps.setPaintDeviceFormat(device());
+    configProps.setRenderableType(QEgl::OpenGL);
+
+    // Search for a matching configuration, reducing the complexity
+    // each time until we get something that matches.
+    if (!d->eglContext->chooseConfig(configProps)) {
+        delete d->eglContext;
+        d->eglContext = 0;
+        return false;
+    }
+
+    // Inform the higher layers about the actual format properties.
+    qt_glformat_from_eglconfig(d->glFormat, d->eglContext->config());
+
+    // Create a new context for the configuration.
+    if (!d->eglContext->createContext
+            (shareContext ? shareContext->d_func()->eglContext : 0)) {
+        delete d->eglContext;
+        d->eglContext = 0;
+        return false;
+    }
+    d->sharing = d->eglContext->isSharing();
+    if (d->sharing && shareContext)
+        const_cast<QGLContext *>(shareContext)->d_func()->sharing = true;
+
+#if defined(EGL_VERSION_1_1)
+    if (d->glFormat.swapInterval() != -1 && devType == QInternal::Widget)
+        eglSwapInterval(d->eglContext->display(), d->glFormat.swapInterval());
+#endif
+
+    // Create the EGL surface to draw into.
+    d->eglSurface = d->eglContext->createSurface(device());
+    if (d->eglSurface == EGL_NO_SURFACE) {
+        delete d->eglContext;
+        d->eglContext = 0;
+        return false;
+    }
+
+    return true;
+
+}
+
+
+
+static bool qLogEq(bool a, bool b)
+{
+    return (((!a) && (!b)) || (a && b));
+}
+
+int QGLContext::choosePixelFormat(void* , HDC )
+{
+
+    return 0;
+}
+
+class QGLCmapPrivate;
+
+class /*Q_EXPORT*/ QGLCmap
+{
+public:
+    enum Flags { Reserved = 0x01 };
+
+    QGLCmap(int maxSize = 256);
+    QGLCmap(const QGLCmap& map);
+    ~QGLCmap();
+
+    QGLCmap& operator=(const QGLCmap& map);
+
+    // isEmpty and/or isNull ?
+    int size() const;
+    int maxSize() const;
+
+    void resize(int newSize);
+
+    int find(QRgb color) const;
+    int findNearest(QRgb color) const;
+    int allocate(QRgb color, uint flags = 0, quint8 context = 0);
+
+    void setEntry(int idx, QRgb color, uint flags = 0, quint8 context = 0);
+
+    const QRgb* colors() const;
+
+private:
+    void detach();
+    QGLCmapPrivate* d;
+};
+
+#endif
+
+
+QGLCmap::QGLCmap(int maxSize) // add a bool prealloc?
+{
+    d = new QGLCmapPrivate;
+    d->maxSize = maxSize;
+}
+
+QGLCmap::QGLCmap(const QGLCmap& map)
+{
+    d = map.d;
+    d->ref();
+}
+
+QGLCmap::~QGLCmap()
+{
+    if (d && d->deref())
+        delete d;
+    d = 0;
+}
+
+QGLCmap& QGLCmap::operator=(const QGLCmap& map)
+{
+    map.d->ref();
+    if (d->deref())
+        delete d;
+    d = map.d;
+    return *this;
+}
+
+int QGLCmap::size() const
+{
+    return d->colorArray.size();
+}
+
+int QGLCmap::maxSize() const
+{
+    return d->maxSize;
+}
+
+void QGLCmap::detach()
+{
+    if (d->count != 1) {
+        d->deref();
+        QGLCmapPrivate* newd = new QGLCmapPrivate;
+        newd->maxSize = d->maxSize;
+        newd->colorArray = d->colorArray;
+        newd->allocArray = d->allocArray;
+        newd->contextArray = d->contextArray;
+        newd->colorArray.detach();
+        newd->allocArray.detach();
+        newd->contextArray.detach();
+        newd->colorMap = d->colorMap;
+        d = newd;
+    }
+}
+
+
+void QGLCmap::resize(int newSize)
+{
+    if (newSize < 0 || newSize > d->maxSize) {
+        qWarning("QGLCmap::resize(): size out of range");
+        return;
+    }
+    int oldSize = size();
+    detach();
+    //if shrinking; remove the lost elems from colorMap
+    d->colorArray.resize(newSize);
+    d->allocArray.resize(newSize);
+    d->contextArray.resize(newSize);
+    if (newSize > oldSize) {
+        memset(d->allocArray.data() + oldSize, 0, newSize - oldSize);
+        memset(d->contextArray.data() + oldSize, 0, newSize - oldSize);
+    }
+}
+
+
+int QGLCmap::find(QRgb color) const
+{
+    QMap<uint,int>::ConstIterator it = d->colorMap.find(color);
+    if (it != d->colorMap.end())
+        return *it;
+    return -1;
+}
+
+
+int QGLCmap::findNearest(QRgb color) const
+{
+    int idx = find(color);
+    if (idx >= 0)
+        return idx;
+    int mapSize = size();
+    int mindist = 200000;
+    int r = qRed(color);
+    int g = qGreen(color);
+    int b = qBlue(color);
+    int rx, gx, bx, dist;
+    for (int i=0; i < mapSize; i++) {
+        if (!(d->allocArray[i] & QGLCmapPrivate::Allocated))
+            continue;
+        QRgb ci = d->colorArray[i];
+        rx = r - qRed(ci);
+        gx = g - qGreen(ci);
+        bx = b - qBlue(ci);
+        dist = rx*rx + gx*gx + bx*bx;                // calculate distance
+        if (dist < mindist) {                        // minimal?
+            mindist = dist;
+            idx = i;
+        }
+    }
+    return idx;
+}
+
+
+// Does not always allocate; returns existing c idx if found
+
+int QGLCmap::allocate(QRgb color, uint flags, quint8 context)
+{
+    int idx = find(color);
+    if (idx >= 0)
+        return idx;
+
+    int mapSize = d->colorArray.size();
+    int newIdx = d->allocArray.indexOf(QGLCmapPrivate::UnAllocated);
+
+    if (newIdx < 0) {                        // Must allocate more room
+        if (mapSize < d->maxSize) {
+            newIdx = mapSize;
+            mapSize++;
+            resize(mapSize);
+        }
+        else {
+            //# add a bool param that says what to do in case no more room -
+            // fail (-1) or return nearest?
+            return -1;
+        }
+    }
+
+    d->colorArray[newIdx] = color;
+    if (flags & QGLCmap::Reserved) {
+        d->allocArray[newIdx] = QGLCmapPrivate::Reserved;
+    }
+    else {
+        d->allocArray[newIdx] = QGLCmapPrivate::Allocated;
+        d->colorMap.insert(color, newIdx);
+    }
+    d->contextArray[newIdx] = context;
+    return newIdx;
+}
+
+
+void QGLCmap::setEntry(int idx, QRgb color, uint flags, quint8 context)
+{
+    if (idx < 0 || idx >= d->maxSize) {
+        qWarning("QGLCmap::set(): Index out of range");
+        return;
+    }
+    detach();
+    int mapSize = size();
+    if (idx >= mapSize) {
+        mapSize = idx + 1;
+        resize(mapSize);
+    }
+    d->colorArray[idx] = color;
+    if (flags & QGLCmap::Reserved) {
+        d->allocArray[idx] = QGLCmapPrivate::Reserved;
+    }
+    else {
+        d->allocArray[idx] = QGLCmapPrivate::Allocated;
+        d->colorMap.insert(color, idx);
+    }
+    d->contextArray[idx] = context;
+}
+
+
+const QRgb* QGLCmap::colors() const
+{
+    return d->colorArray.data();
+}
+
+
+/*****************************************************************************
+  QGLWidget Win32/WGL-specific code
+ *****************************************************************************/
+
+void QGLWidgetPrivate::init(QGLContext *ctx, const QGLWidget* shareWidget)
+{
+    Q_Q(QGLWidget);
+    olcx = 0;
+    initContext(ctx, shareWidget);
+
+    if (q->isValid() && q->context()->format().hasOverlay()) {
+        olcx = new QGLContext(QGLFormat::defaultOverlayFormat(), q);
+        if (!olcx->create(shareWidget ? shareWidget->overlayContext() : 0)) {
+            delete olcx;
+            olcx = 0;
+            glcx->d_func()->glFormat.setOverlay(false);
+        }
+    } else {
+        olcx = 0;
+    }
+}
+
+/*\internal
+  Store color values in the given colormap.
+*/
+static void qStoreColors(HPALETTE cmap, const QGLColormap & cols)
+{
+    QRgb color;
+    PALETTEENTRY pe;
+
+    for (int i = 0; i < cols.size(); i++) {
+        color = cols.entryRgb(i);
+        pe.peRed   = qRed(color);
+        pe.peGreen = qGreen(color);
+        pe.peBlue  = qBlue(color);
+        pe.peFlags = 0;
+
+        SetPaletteEntries(cmap, i, 1, &pe);
+    }
+}
+
+void QGLWidgetPrivate::updateColormap()
+{
+    Q_Q(QGLWidget);
+    if (!cmap.handle())
+        return;
+    HDC hdc = GetDC(q->winId());
+    SelectPalette(hdc, (HPALETTE) cmap.handle(), TRUE);
+    qStoreColors((HPALETTE) cmap.handle(), cmap);
+    RealizePalette(hdc);
+    ReleaseDC(q->winId(), hdc);
+}
+
+bool QGLWidget::event(QEvent *e)
+{
+    Q_D(QGLWidget);
+    if (e->type() == QEvent::ParentChange) {
+        setContext(new QGLContext(d->glcx->requestedFormat(), this));
+        // the overlay needs to be recreated as well
+        delete d->olcx;
+        if (isValid() && context()->format().hasOverlay()) {
+            d->olcx = new QGLContext(QGLFormat::defaultOverlayFormat(), this);
+            if (!d->olcx->create(isSharing() ? d->glcx : 0)) {
+                delete d->olcx;
+                d->olcx = 0;
+                d->glcx->d_func()->glFormat.setOverlay(false);
+            }
+        } else {
+            d->olcx = 0;
+        }
+    } else if (e->type() == QEvent::Show && !format().rgba()) {
+        d->updateColormap();
+    }
+
+    return QWidget::event(e);
+}
+
+
+void QGLWidget::resizeEvent(QResizeEvent *)
+{
+    Q_D(QGLWidget);
+    if (!isValid())
+        return;
+    makeCurrent();
+    if (!d->glcx->initialized())
+        glInit();
+    resizeGL(width(), height());
+    if (d->olcx) {
+        makeOverlayCurrent();
+        resizeOverlayGL(width(), height());
+    }
+}
+
+
+const QGLContext* QGLWidget::overlayContext() const
+{
+    return d_func()->olcx;
+}
+
+
+void QGLWidget::makeOverlayCurrent()
+{
+    Q_D(QGLWidget);
+    if (d->olcx) {
+        d->olcx->makeCurrent();
+        if (!d->olcx->initialized()) {
+            initializeOverlayGL();
+            d->olcx->setInitialized(true);
+        }
+    }
+}
+
+
+void QGLWidget::updateOverlayGL()
+{
+    Q_D(QGLWidget);
+    if (d->olcx) {
+        makeOverlayCurrent();
+        paintOverlayGL();
+        if (d->olcx->format().doubleBuffer()) {
+            if (d->autoSwap)
+                d->olcx->swapBuffers();
+        }
+        else {
+            glFlush();
+        }
+    }
+}
+
+void QGLWidget::setContext(QGLContext *context,
+                            const QGLContext* shareContext,
+                            bool deleteOldContext)
+{
+    Q_D(QGLWidget);
+    if (context == 0) {
+        qWarning("QGLWidget::setContext: Cannot set null context");
+        return;
+    }
+    if (!context->deviceIsPixmap() && context->device() != this) {
+        qWarning("QGLWidget::setContext: Context must refer to this widget");
+        return;
+    }
+
+    if (d->glcx)
+        d->glcx->doneCurrent();
+    QGLContext* oldcx = d->glcx;
+    d->glcx = context;
+
+    bool doShow = false;
+    if (oldcx && oldcx->d_func()->win == winId() && !d->glcx->deviceIsPixmap()) {
+        // We already have a context and must therefore create a new
+        // window since Windows does not permit setting a new OpenGL
+        // context for a window that already has one set.
+        doShow = isVisible();
+        QWidget *pW = static_cast<QWidget *>(parent());
+        QPoint pos = geometry().topLeft();
+        setParent(pW, windowFlags());
+        move(pos);
+    }
+
+    if (!d->glcx->isValid()) {
+        d->glcx->create(shareContext ? shareContext : oldcx);
+        // the above is a trick to keep disp lists etc when a
+        // QGLWidget has been reparented, so remove the sharing
+        // flag if we don't actually have a sharing context.
+        if (!shareContext)
+            d->glcx->d_ptr->sharing = false;
+    }
+
+    if (deleteOldContext)
+        delete oldcx;
+
+    if (doShow)
+        show();
+}
+
+
+void QGLWidgetPrivate::cleanupColormaps()
+{
+    Q_Q(QGLWidget);
+    if (cmap.handle()) {
+        HDC hdc = GetDC(q->winId());
+        SelectPalette(hdc, (HPALETTE) GetStockObject(DEFAULT_PALETTE), FALSE);
+        DeleteObject((HPALETTE) cmap.handle());
+        ReleaseDC(q->winId(), hdc);
+        cmap.setHandle(0);
+    }
+    return;
+}
+
+const QGLColormap & QGLWidget::colormap() const
+{
+    return d_func()->cmap;
+}
+
+void QGLWidget::setColormap(const QGLColormap & c)
+{
+    Q_D(QGLWidget);
+    d->cmap = c;
+
+    if (d->cmap.handle()) { // already have an allocated cmap
+        d->updateColormap();
+    } else {
+        LOGPALETTE *lpal = (LOGPALETTE *) malloc(sizeof(LOGPALETTE)
+                                                 +c.size()*sizeof(PALETTEENTRY));
+        lpal->palVersion    = 0x300;
+        lpal->palNumEntries = c.size();
+        d->cmap.setHandle(CreatePalette(lpal));
+        free(lpal);
+        d->updateColormap();
+    }
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/qgl_x11.cpp b/src/opengl/qgl_x11.cpp
new file mode 100644
index 0000000000..9b520034f8
--- /dev/null
+++ b/src/opengl/qgl_x11.cpp
@@ -0,0 +1,1908 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qgl.h"
+#include "qgl_p.h"
+
+#include "qmap.h"
+#include "qapplication.h"
+#include "qcolormap.h"
+#include "qdesktopwidget.h"
+#include "qpixmap.h"
+#include "qhash.h"
+#include "qlibrary.h"
+#include "qdebug.h"
+#include <private/qfontengine_ft_p.h>
+#include <private/qt_x11_p.h>
+#include <private/qpixmap_x11_p.h>
+#include <private/qimagepixmapcleanuphooks_p.h>
+#include <private/qunicodetables_p.h>
+#ifdef Q_OS_HPUX
+// for GLXPBuffer
+#include <private/qglpixelbuffer_p.h>
+#endif
+
+// We always define GLX_EXT_texture_from_pixmap ourselves because
+// we can't trust system headers to do it properly
+#define GLX_EXT_texture_from_pixmap 1
+
+#define INT8  dummy_INT8
+#define INT32 dummy_INT32
+#include <GL/glx.h>
+#undef  INT8
+#undef  INT32
+
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <X11/Xos.h>
+#ifdef Q_OS_VXWORS
+#  ifdef open
+#    undef open
+#  endif
+#  ifdef getpid
+#    undef getpid
+#  endif
+#endif // Q_OS_VXWORKS
+#include <X11/Xatom.h>
+
+#if defined(Q_OS_LINUX) || defined(Q_OS_BSD4)
+#include <dlfcn.h>
+#endif
+
+QT_BEGIN_NAMESPACE
+
+extern Drawable qt_x11Handle(const QPaintDevice *pd);
+extern const QX11Info *qt_x11Info(const QPaintDevice *pd);
+
+#ifndef GLX_ARB_multisample
+#define GLX_SAMPLE_BUFFERS_ARB  100000
+#define GLX_SAMPLES_ARB         100001
+#endif
+
+#ifndef GLX_TEXTURE_2D_BIT_EXT
+#define GLX_TEXTURE_2D_BIT_EXT             0x00000002
+#define GLX_TEXTURE_RECTANGLE_BIT_EXT      0x00000004
+#define GLX_BIND_TO_TEXTURE_RGB_EXT        0x20D0
+#define GLX_BIND_TO_TEXTURE_RGBA_EXT       0x20D1
+#define GLX_BIND_TO_MIPMAP_TEXTURE_EXT     0x20D2
+#define GLX_BIND_TO_TEXTURE_TARGETS_EXT    0x20D3
+#define GLX_Y_INVERTED_EXT                 0x20D4
+#define GLX_TEXTURE_FORMAT_EXT             0x20D5
+#define GLX_TEXTURE_TARGET_EXT             0x20D6
+#define GLX_MIPMAP_TEXTURE_EXT             0x20D7
+#define GLX_TEXTURE_FORMAT_NONE_EXT        0x20D8
+#define GLX_TEXTURE_FORMAT_RGB_EXT         0x20D9
+#define GLX_TEXTURE_FORMAT_RGBA_EXT        0x20DA
+#define GLX_TEXTURE_2D_EXT                 0x20DC
+#define GLX_TEXTURE_RECTANGLE_EXT          0x20DD
+#define GLX_FRONT_LEFT_EXT                 0x20DE
+#endif
+
+#ifndef GLX_ARB_create_context
+#define GLX_CONTEXT_DEBUG_BIT_ARB          0x00000001
+#define GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB 0x00000002
+#define GLX_CONTEXT_MAJOR_VERSION_ARB      0x2091
+#define GLX_CONTEXT_MINOR_VERSION_ARB      0x2092
+#define GLX_CONTEXT_FLAGS_ARB              0x2094
+#endif
+
+#ifndef GLX_ARB_create_context_profile
+#define GLX_CONTEXT_CORE_PROFILE_BIT_ARB   0x00000001
+#define GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB 0x00000002
+#define GLX_CONTEXT_PROFILE_MASK_ARB       0x9126
+#endif
+
+/*
+  The qt_gl_choose_cmap function is internal and used by QGLWidget::setContext()
+  and GLX (not Windows).  If the application can't find any sharable
+  colormaps, it must at least create as few colormaps as possible.  The
+  dictionary solution below ensures only one colormap is created per visual.
+  Colormaps are also deleted when the application terminates.
+*/
+
+struct QCMapEntry {
+    QCMapEntry();
+    ~QCMapEntry();
+
+    Colormap cmap;
+    bool alloc;
+    XStandardColormap scmap;
+};
+
+QCMapEntry::QCMapEntry()
+{
+    cmap = 0;
+    alloc = false;
+    scmap.colormap = 0;
+}
+
+QCMapEntry::~QCMapEntry()
+{
+    if (alloc)
+        XFreeColormap(X11->display, cmap);
+}
+typedef QHash<int, QCMapEntry *> CMapEntryHash;
+typedef QHash<int, QMap<int, QRgb> > GLCMapHash;
+static bool mesa_gl = false;
+static bool first_time = true;
+
+static void cleanup_cmaps();
+
+struct QGLCMapCleanupHandler {
+    QGLCMapCleanupHandler() {
+        cmap_hash = new CMapEntryHash;
+        qglcmap_hash = new GLCMapHash;
+    }
+    ~QGLCMapCleanupHandler() {
+        delete cmap_hash;
+        delete qglcmap_hash;
+    }
+    CMapEntryHash *cmap_hash;
+    GLCMapHash *qglcmap_hash;
+};
+Q_GLOBAL_STATIC(QGLCMapCleanupHandler, cmap_handler)
+
+static void cleanup_cmaps()
+{
+    CMapEntryHash *hash = cmap_handler()->cmap_hash;
+    QHash<int, QCMapEntry *>::ConstIterator it = hash->constBegin();
+    while (it != hash->constEnd()) {
+        delete it.value();
+        ++it;
+    }
+
+    hash->clear();
+    cmap_handler()->qglcmap_hash->clear();
+}
+
+Colormap qt_gl_choose_cmap(Display *dpy, XVisualInfo *vi)
+{
+    if (first_time) {
+        const char *v = glXQueryServerString(dpy, vi->screen, GLX_VERSION);
+        if (v)
+            mesa_gl = (strstr(v, "Mesa") != 0);
+        first_time = false;
+    }
+
+    CMapEntryHash *hash = cmap_handler()->cmap_hash;
+    CMapEntryHash::ConstIterator it = hash->constFind((long) vi->visualid + (vi->screen * 256));
+    if (it != hash->constEnd())
+        return it.value()->cmap; // found colormap for visual
+
+    if (vi->visualid ==
+        XVisualIDFromVisual((Visual *) QX11Info::appVisual(vi->screen))) {
+        // qDebug("Using x11AppColormap");
+        return QX11Info::appColormap(vi->screen);
+    }
+
+    QCMapEntry *x = new QCMapEntry();
+
+    XStandardColormap *c;
+    int n, i;
+
+    // qDebug("Choosing cmap for vID %0x", vi->visualid);
+
+    if (mesa_gl) {                                // we're using MesaGL
+        Atom hp_cmaps = XInternAtom(dpy, "_HP_RGB_SMOOTH_MAP_LIST", true);
+        if (hp_cmaps && vi->visual->c_class == TrueColor && vi->depth == 8) {
+            if (XGetRGBColormaps(dpy,RootWindow(dpy,vi->screen),&c,&n,
+                                 hp_cmaps)) {
+                i = 0;
+                while (i < n && x->cmap == 0) {
+                    if (c[i].visualid == vi->visual->visualid) {
+                        x->cmap = c[i].colormap;
+                        x->scmap = c[i];
+                        //qDebug("Using HP_RGB scmap");
+
+                    }
+                    i++;
+                }
+                XFree((char *)c);
+            }
+        }
+    }
+    if (!x->cmap) {
+        if (XGetRGBColormaps(dpy,RootWindow(dpy,vi->screen),&c,&n,
+                             XA_RGB_DEFAULT_MAP)) {
+            for (int i = 0; i < n && x->cmap == 0; ++i) {
+                if (!c[i].red_max ||
+                    !c[i].green_max ||
+                    !c[i].blue_max ||
+                    !c[i].red_mult ||
+                    !c[i].green_mult ||
+                    !c[i].blue_mult)
+                    continue; // invalid stdcmap
+                if (c[i].visualid == vi->visualid) {
+                    x->cmap = c[i].colormap;
+                    x->scmap = c[i];
+                    //qDebug("Using RGB_DEFAULT scmap");
+                }
+            }
+            XFree((char *)c);
+        }
+    }
+    if (!x->cmap) {                                // no shared cmap found
+        x->cmap = XCreateColormap(dpy, RootWindow(dpy,vi->screen), vi->visual,
+                                  AllocNone);
+        x->alloc = true;
+        // qDebug("Allocating cmap");
+    }
+
+    // colormap hash should be cleanup only when the QApplication dtor is called
+    if (hash->isEmpty())
+        qAddPostRoutine(cleanup_cmaps);
+
+    // associate cmap with visualid
+    hash->insert((long) vi->visualid + (vi->screen * 256), x);
+    return x->cmap;
+}
+
+struct QTransColor
+{
+    VisualID vis;
+    int screen;
+    long color;
+};
+
+static QVector<QTransColor> trans_colors;
+static int trans_colors_init = false;
+
+static void find_trans_colors()
+{
+    struct OverlayProp {
+        long  visual;
+        long  type;
+        long  value;
+        long  layer;
+    };
+
+    trans_colors_init = true;
+
+    Display* appDisplay = X11->display;
+
+    int scr;
+    int lastsize = 0;
+    for (scr = 0; scr < ScreenCount(appDisplay); scr++) {
+        QWidget* rootWin = QApplication::desktop()->screen(scr);
+        if (!rootWin)
+            return;                                        // Should not happen
+        Atom overlayVisualsAtom = XInternAtom(appDisplay,
+                                               "SERVER_OVERLAY_VISUALS", True);
+        if (overlayVisualsAtom == XNone)
+            return;                                        // Server has no overlays
+
+        Atom actualType;
+        int actualFormat;
+        ulong nItems;
+        ulong bytesAfter;
+        unsigned char *retval = 0;
+        int res = XGetWindowProperty(appDisplay, rootWin->winId(),
+                                      overlayVisualsAtom, 0, 10000, False,
+                                      overlayVisualsAtom, &actualType,
+                                      &actualFormat, &nItems, &bytesAfter,
+                                      &retval);
+
+        if (res != Success || actualType != overlayVisualsAtom
+             || actualFormat != 32 || nItems < 4 || !retval)
+            return;                                        // Error reading property
+
+        OverlayProp *overlayProps = (OverlayProp *)retval;
+
+        int numProps = nItems / 4;
+        trans_colors.resize(lastsize + numProps);
+        int j = lastsize;
+        for (int i = 0; i < numProps; i++) {
+            if (overlayProps[i].type == 1) {
+                trans_colors[j].vis = (VisualID)overlayProps[i].visual;
+                trans_colors[j].screen = scr;
+                trans_colors[j].color = (int)overlayProps[i].value;
+                j++;
+            }
+        }
+        XFree(overlayProps);
+        lastsize = j;
+        trans_colors.resize(lastsize);
+    }
+}
+
+/*****************************************************************************
+  QGLFormat UNIX/GLX-specific code
+ *****************************************************************************/
+
+void* qglx_getProcAddress(const char* procName)
+{
+    // On systems where the GL driver is pluggable (like Mesa), we have to use
+    // the glXGetProcAddressARB extension to resolve other function pointers as
+    // the symbols wont be in the GL library, but rather in a plugin loaded by
+    // the GL library.
+    typedef void* (*qt_glXGetProcAddressARB)(const char *);
+    static qt_glXGetProcAddressARB glXGetProcAddressARB = 0;
+    static bool triedResolvingGlxGetProcAddress = false;
+    if (!triedResolvingGlxGetProcAddress) {
+        triedResolvingGlxGetProcAddress = true;
+        QGLExtensionMatcher extensions(glXGetClientString(QX11Info::display(), GLX_EXTENSIONS));
+        if (extensions.match("GLX_ARB_get_proc_address")) {
+#if defined(Q_OS_LINUX) || defined(Q_OS_BSD4)
+            void *handle = dlopen(NULL, RTLD_LAZY);
+            if (handle) {
+                glXGetProcAddressARB = (qt_glXGetProcAddressARB) dlsym(handle, "glXGetProcAddressARB");
+                dlclose(handle);
+            }
+            if (!glXGetProcAddressARB)
+#endif
+            {
+#if !defined(QT_NO_LIBRARY)
+                extern const QString qt_gl_library_name();
+                QLibrary lib(qt_gl_library_name());
+                glXGetProcAddressARB = (qt_glXGetProcAddressARB) lib.resolve("glXGetProcAddressARB");
+#endif
+            }
+        }
+    }
+
+    void *procAddress = 0;
+    if (glXGetProcAddressARB)
+        procAddress = glXGetProcAddressARB(procName);
+
+    // If glXGetProcAddress didn't work, try looking the symbol up in the GL library
+#if defined(Q_OS_LINUX) || defined(Q_OS_BSD4)
+    if (!procAddress) {
+        void *handle = dlopen(NULL, RTLD_LAZY);
+        if (handle) {
+            procAddress = dlsym(handle, procName);
+            dlclose(handle);
+        }
+    }
+#endif
+#if !defined(QT_NO_LIBRARY)
+    if (!procAddress) {
+        extern const QString qt_gl_library_name();
+        QLibrary lib(qt_gl_library_name());
+        procAddress = lib.resolve(procName);
+    }
+#endif
+
+    return procAddress;
+}
+
+bool QGLFormat::hasOpenGL()
+{
+    return glXQueryExtension(X11->display, 0, 0) != 0;
+}
+
+
+bool QGLFormat::hasOpenGLOverlays()
+{
+    if (!trans_colors_init)
+        find_trans_colors();
+    return trans_colors.size() > 0;
+}
+
+static bool buildSpec(int* spec, const QGLFormat& f, QPaintDevice* paintDevice,
+                      int bufDepth, bool onlyFBConfig = false)
+{
+    int i = 0;
+    spec[i++] = GLX_LEVEL;
+    spec[i++] = f.plane();
+    const QX11Info *xinfo = qt_x11Info(paintDevice);
+    bool useFBConfig = onlyFBConfig;
+
+#if defined(GLX_VERSION_1_3) && !defined(QT_NO_XRENDER) && !defined(Q_OS_HPUX)
+    /*
+      HPUX defines GLX_VERSION_1_3 but does not implement the corresponding functions.
+      Specifically glXChooseFBConfig and glXGetVisualFromFBConfig are not implemented.
+     */
+    QWidget* widget = 0;
+    if (paintDevice->devType() == QInternal::Widget)
+        widget = static_cast<QWidget*>(paintDevice);
+
+    // Only use glXChooseFBConfig for widgets if we're trying to get an ARGB visual
+    if (widget && widget->testAttribute(Qt::WA_TranslucentBackground) && X11->use_xrender)
+        useFBConfig = true;
+#endif
+
+#if defined(GLX_VERSION_1_1) && defined(GLX_EXT_visual_info)
+    static bool useTranspExt = false;
+    static bool useTranspExtChecked = false;
+    if (f.plane() && !useTranspExtChecked && paintDevice) {
+        QGLExtensionMatcher extensions(glXQueryExtensionsString(xinfo->display(), xinfo->screen()));
+        useTranspExt = extensions.match("GLX_EXT_visual_info");
+        //# (A bit simplistic; that could theoretically be a substring)
+        if (useTranspExt) {
+            QByteArray cstr(glXGetClientString(xinfo->display(), GLX_VENDOR));
+            useTranspExt = !cstr.contains("Xi Graphics"); // bug workaround
+            if (useTranspExt) {
+                // bug workaround - some systems (eg. FireGL) refuses to return an overlay
+                // visual if the GLX_TRANSPARENT_TYPE_EXT attribute is specified, even if
+                // the implementation supports transparent overlays
+                int tmpSpec[] = { GLX_LEVEL, f.plane(), GLX_TRANSPARENT_TYPE_EXT,
+                                  f.rgba() ? GLX_TRANSPARENT_RGB_EXT : GLX_TRANSPARENT_INDEX_EXT,
+                                  XNone };
+                XVisualInfo * vinf = glXChooseVisual(xinfo->display(), xinfo->screen(), tmpSpec);
+                if (!vinf) {
+                    useTranspExt = false;
+                }
+            }
+        }
+
+        useTranspExtChecked = true;
+    }
+    if (f.plane() && useTranspExt && !useFBConfig) {
+        // Required to avoid non-transparent overlay visual(!) on some systems
+        spec[i++] = GLX_TRANSPARENT_TYPE_EXT;
+        spec[i++] = f.rgba() ? GLX_TRANSPARENT_RGB_EXT : GLX_TRANSPARENT_INDEX_EXT;
+    }
+#endif
+
+#if defined(GLX_VERSION_1_3)  && !defined(Q_OS_HPUX)
+    // GLX_RENDER_TYPE is only in glx >=1.3
+    if (useFBConfig) {
+        spec[i++] = GLX_RENDER_TYPE;
+        spec[i++] = f.rgba() ? GLX_RGBA_BIT : GLX_COLOR_INDEX_BIT;
+    }
+#endif
+
+    if (f.doubleBuffer())
+        spec[i++] = GLX_DOUBLEBUFFER;
+        if (useFBConfig)
+            spec[i++] = True;
+    if (f.depth()) {
+        spec[i++] = GLX_DEPTH_SIZE;
+        spec[i++] = f.depthBufferSize() == -1 ? 1 : f.depthBufferSize();
+    }
+    if (f.stereo()) {
+        spec[i++] = GLX_STEREO;
+        if (useFBConfig)
+            spec[i++] = True;
+    }
+    if (f.stencil()) {
+        spec[i++] = GLX_STENCIL_SIZE;
+        spec[i++] = f.stencilBufferSize() == -1 ? 1 : f.stencilBufferSize();
+    }
+    if (f.rgba()) {
+        if (!useFBConfig)
+            spec[i++] = GLX_RGBA;
+        spec[i++] = GLX_RED_SIZE;
+        spec[i++] = f.redBufferSize() == -1 ? 1 : f.redBufferSize();
+        spec[i++] = GLX_GREEN_SIZE;
+        spec[i++] = f.greenBufferSize() == -1 ? 1 : f.greenBufferSize();
+        spec[i++] = GLX_BLUE_SIZE;
+        spec[i++] = f.blueBufferSize() == -1 ? 1 : f.blueBufferSize();
+        if (f.alpha()) {
+            spec[i++] = GLX_ALPHA_SIZE;
+            spec[i++] = f.alphaBufferSize() == -1 ? 1 : f.alphaBufferSize();
+        }
+        if (f.accum()) {
+            spec[i++] = GLX_ACCUM_RED_SIZE;
+            spec[i++] = f.accumBufferSize() == -1 ? 1 : f.accumBufferSize();
+            spec[i++] = GLX_ACCUM_GREEN_SIZE;
+            spec[i++] = f.accumBufferSize() == -1 ? 1 : f.accumBufferSize();
+            spec[i++] = GLX_ACCUM_BLUE_SIZE;
+            spec[i++] = f.accumBufferSize() == -1 ? 1 : f.accumBufferSize();
+            if (f.alpha()) {
+                spec[i++] = GLX_ACCUM_ALPHA_SIZE;
+                spec[i++] = f.accumBufferSize() == -1 ? 1 : f.accumBufferSize();
+            }
+        }
+    } else {
+        spec[i++] = GLX_BUFFER_SIZE;
+        spec[i++] = bufDepth;
+    }
+
+    if (f.sampleBuffers()) {
+        spec[i++] = GLX_SAMPLE_BUFFERS_ARB;
+        spec[i++] = 1;
+        spec[i++] = GLX_SAMPLES_ARB;
+        spec[i++] = f.samples() == -1 ? 4 : f.samples();
+    }
+
+#if defined(GLX_VERSION_1_3) && !defined(Q_OS_HPUX)
+    if (useFBConfig) {
+        spec[i++] = GLX_DRAWABLE_TYPE;
+        switch(paintDevice->devType()) {
+        case QInternal::Pixmap:
+            spec[i++] = GLX_PIXMAP_BIT;
+            break;
+        case QInternal::Pbuffer:
+            spec[i++] = GLX_PBUFFER_BIT;
+            break;
+        default:
+            qWarning("QGLContext: Unknown paint device type %d", paintDevice->devType());
+            // Fall-through & assume it's a window
+        case QInternal::Widget:
+            spec[i++] = GLX_WINDOW_BIT;
+            break;
+        };
+    }
+#endif
+
+    spec[i] = XNone;
+    return useFBConfig;
+}
+
+/*****************************************************************************
+  QGLContext UNIX/GLX-specific code
+ *****************************************************************************/
+
+bool QGLContext::chooseContext(const QGLContext* shareContext)
+{
+    Q_D(QGLContext);
+    const QX11Info *xinfo = qt_x11Info(d->paintDevice);
+
+    Display* disp = xinfo->display();
+    d->vi = chooseVisual();
+    if (!d->vi)
+        return false;
+
+    if (deviceIsPixmap() &&
+         (((XVisualInfo*)d->vi)->depth != xinfo->depth() ||
+          ((XVisualInfo*)d->vi)->screen != xinfo->screen()))
+    {
+        XFree(d->vi);
+        XVisualInfo appVisInfo;
+        memset(&appVisInfo, 0, sizeof(XVisualInfo));
+        appVisInfo.visualid = XVisualIDFromVisual((Visual *) xinfo->visual());
+        appVisInfo.screen = xinfo->screen();
+        int nvis;
+        d->vi = XGetVisualInfo(disp, VisualIDMask | VisualScreenMask, &appVisInfo, &nvis);
+        if (!d->vi)
+            return false;
+
+        int useGL;
+        glXGetConfig(disp, (XVisualInfo*)d->vi, GLX_USE_GL, &useGL);
+        if (!useGL)
+            return false;        //# Chickening out already...
+    }
+    int res;
+    glXGetConfig(disp, (XVisualInfo*)d->vi, GLX_LEVEL, &res);
+    d->glFormat.setPlane(res);
+    glXGetConfig(disp, (XVisualInfo*)d->vi, GLX_DOUBLEBUFFER, &res);
+    d->glFormat.setDoubleBuffer(res);
+    glXGetConfig(disp, (XVisualInfo*)d->vi, GLX_DEPTH_SIZE, &res);
+    d->glFormat.setDepth(res);
+    if (d->glFormat.depth())
+        d->glFormat.setDepthBufferSize(res);
+    glXGetConfig(disp, (XVisualInfo*)d->vi, GLX_RGBA, &res);
+    d->glFormat.setRgba(res);
+    glXGetConfig(disp, (XVisualInfo*)d->vi, GLX_RED_SIZE, &res);
+    d->glFormat.setRedBufferSize(res);
+    glXGetConfig(disp, (XVisualInfo*)d->vi, GLX_GREEN_SIZE, &res);
+    d->glFormat.setGreenBufferSize(res);
+    glXGetConfig(disp, (XVisualInfo*)d->vi, GLX_BLUE_SIZE, &res);
+    d->glFormat.setBlueBufferSize(res);
+    glXGetConfig(disp, (XVisualInfo*)d->vi, GLX_ALPHA_SIZE, &res);
+    d->glFormat.setAlpha(res);
+    if (d->glFormat.alpha())
+        d->glFormat.setAlphaBufferSize(res);
+    glXGetConfig(disp, (XVisualInfo*)d->vi, GLX_ACCUM_RED_SIZE, &res);
+    d->glFormat.setAccum(res);
+    if (d->glFormat.accum())
+        d->glFormat.setAccumBufferSize(res);
+    glXGetConfig(disp, (XVisualInfo*)d->vi, GLX_STENCIL_SIZE, &res);
+    d->glFormat.setStencil(res);
+    if (d->glFormat.stencil())
+        d->glFormat.setStencilBufferSize(res);
+    glXGetConfig(disp, (XVisualInfo*)d->vi, GLX_STEREO, &res);
+    d->glFormat.setStereo(res);
+    glXGetConfig(disp, (XVisualInfo*)d->vi, GLX_SAMPLE_BUFFERS_ARB, &res);
+    d->glFormat.setSampleBuffers(res);
+    if (d->glFormat.sampleBuffers()) {
+        glXGetConfig(disp, (XVisualInfo*)d->vi, GLX_SAMPLES_ARB, &res);
+        d->glFormat.setSamples(res);
+    }
+
+    Bool direct = format().directRendering() ? True : False;
+
+    if (shareContext &&
+         (!shareContext->isValid() || !shareContext->d_func()->cx)) {
+            qWarning("QGLContext::chooseContext(): Cannot share with invalid context");
+            shareContext = 0;
+    }
+
+    // 1. Sharing between rgba and color-index will give wrong colors.
+    // 2. Contexts cannot be shared btw. direct/non-direct renderers.
+    // 3. Pixmaps cannot share contexts that are set up for direct rendering.
+    // 4. If the contexts are not created on the same screen, they can't be shared
+
+    if (shareContext
+        && (format().rgba() != shareContext->format().rgba()
+            || (deviceIsPixmap() && glXIsDirect(disp, (GLXContext)shareContext->d_func()->cx))
+            || (shareContext->d_func()->screen != xinfo->screen())))
+    {
+        shareContext = 0;
+    }
+
+    const int major = d->reqFormat.majorVersion();
+    const int minor = d->reqFormat.minorVersion();
+    const int profile = d->reqFormat.profile() == QGLFormat::CompatibilityProfile
+        ? GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB
+        : GLX_CONTEXT_CORE_PROFILE_BIT_ARB;
+
+    d->cx = 0;
+
+#if defined(GLX_VERSION_1_3) && !defined(Q_OS_HPUX)
+    /*
+      HPUX defines GLX_VERSION_1_3 but does not implement the corresponding functions.
+      Specifically glXChooseFBConfig and glXGetVisualFromFBConfig are not implemented.
+     */
+    if ((major == 3 && minor >= 2) || major > 3) {
+        QGLTemporaryContext *tmpContext = 0;
+        if (!QGLContext::currentContext())
+            tmpContext = new QGLTemporaryContext;
+
+        int attributes[] = { GLX_CONTEXT_MAJOR_VERSION_ARB, major,
+                             GLX_CONTEXT_MINOR_VERSION_ARB, minor,
+                             GLX_CONTEXT_PROFILE_MASK_ARB, profile,
+                             0 };
+
+        typedef GLXContext ( * Q_PFNGLXCREATECONTEXTATTRIBSARBPROC)
+            (Display* dpy, GLXFBConfig config, GLXContext share_context, Bool direct, const int *attrib_list);
+
+
+        Q_PFNGLXCREATECONTEXTATTRIBSARBPROC glXCreateContextAttribs =
+            (Q_PFNGLXCREATECONTEXTATTRIBSARBPROC) qglx_getProcAddress("glXCreateContextAttribsARB");
+
+        if (glXCreateContextAttribs) {
+            int spec[45];
+            glXGetConfig(disp, (XVisualInfo*)d->vi, GLX_BUFFER_SIZE, &res);
+            buildSpec(spec, format(), d->paintDevice, res, true);
+
+            GLXFBConfig *configs;
+            int configCount = 0;
+            configs = glXChooseFBConfig(disp, xinfo->screen(), spec, &configCount);
+
+            if (configs && configCount > 0) {
+                d->cx = glXCreateContextAttribs(disp, configs[0],
+                    shareContext ? (GLXContext)shareContext->d_func()->cx : 0, direct, attributes);
+                if (!d->cx && shareContext) {
+                    shareContext = 0;
+                    d->cx = glXCreateContextAttribs(disp, configs[0], 0, direct, attributes);
+                }
+                d->screen = ((XVisualInfo*)d->vi)->screen;
+            }
+            XFree(configs);
+        } else {
+            qWarning("QGLContext::chooseContext(): OpenGL %d.%d is not supported", major, minor);
+        }
+
+        if (tmpContext)
+            delete tmpContext;
+    }
+#else
+    Q_UNUSED(major);
+    Q_UNUSED(minor);
+    Q_UNUSED(profile);
+#endif
+
+    if (!d->cx && shareContext) {
+        d->cx = glXCreateContext(disp, (XVisualInfo *)d->vi,
+                               (GLXContext)shareContext->d_func()->cx, direct);
+        d->screen = ((XVisualInfo*)d->vi)->screen;
+    }
+    if (!d->cx) {
+        d->cx = glXCreateContext(disp, (XVisualInfo *)d->vi, NULL, direct);
+        d->screen = ((XVisualInfo*)d->vi)->screen;
+        shareContext = 0;
+    }
+
+    if (shareContext && d->cx) {
+        QGLContext *share = const_cast<QGLContext *>(shareContext);
+        d->sharing = true;
+        share->d_func()->sharing = true;
+    }
+
+    if (!d->cx)
+        return false;
+    d->glFormat.setDirectRendering(glXIsDirect(disp, (GLXContext)d->cx));
+    if (deviceIsPixmap()) {
+#if defined(GLX_MESA_pixmap_colormap) && defined(QGL_USE_MESA_EXT)
+        d->gpm = glXCreateGLXPixmapMESA(disp, (XVisualInfo *)d->vi,
+                                        qt_x11Handle(d->paintDevice),
+                                        qt_gl_choose_cmap(disp, (XVisualInfo *)d->vi));
+#else
+        d->gpm = (quint32)glXCreateGLXPixmap(disp, (XVisualInfo *)d->vi,
+                                              qt_x11Handle(d->paintDevice));
+#endif
+        if (!d->gpm)
+            return false;
+    }
+    QGLExtensionMatcher extensions(glXQueryExtensionsString(xinfo->display(), xinfo->screen()));
+    if (extensions.match("GLX_SGI_video_sync")) {
+        if (d->glFormat.swapInterval() == -1)
+            d->glFormat.setSwapInterval(0);
+    } else {
+        d->glFormat.setSwapInterval(-1);
+    }
+    return true;
+}
+
+/*
+  See qgl.cpp for qdoc comment.
+ */
+void *QGLContext::chooseVisual()
+{
+    Q_D(QGLContext);
+    static const int bufDepths[] = { 8, 4, 2, 1 };        // Try 16, 12 also?
+    //todo: if pixmap, also make sure that vi->depth == pixmap->depth
+    void* vis = 0;
+    int i = 0;
+    bool fail = false;
+    QGLFormat fmt = format();
+    bool tryDouble = !fmt.doubleBuffer();  // Some GL impl's only have double
+    bool triedDouble = false;
+    bool triedSample = false;
+    if (fmt.sampleBuffers())
+        fmt.setSampleBuffers(QGLExtensions::glExtensions() & QGLExtensions::SampleBuffers);
+    while(!fail && !(vis = tryVisual(fmt, bufDepths[i]))) {
+        if (!fmt.rgba() && bufDepths[i] > 1) {
+            i++;
+            continue;
+        }
+        if (tryDouble) {
+            fmt.setDoubleBuffer(true);
+            tryDouble = false;
+            triedDouble = true;
+            continue;
+        } else if (triedDouble) {
+            fmt.setDoubleBuffer(false);
+            triedDouble = false;
+        }
+        if (!triedSample && fmt.sampleBuffers()) {
+            fmt.setSampleBuffers(false);
+            triedSample = true;
+            continue;
+        }
+        if (fmt.stereo()) {
+            fmt.setStereo(false);
+            continue;
+        }
+        if (fmt.accum()) {
+            fmt.setAccum(false);
+            continue;
+        }
+        if (fmt.stencil()) {
+            fmt.setStencil(false);
+            continue;
+        }
+        if (fmt.alpha()) {
+            fmt.setAlpha(false);
+            continue;
+        }
+        if (fmt.depth()) {
+            fmt.setDepth(false);
+            continue;
+        }
+        if (fmt.doubleBuffer()) {
+            fmt.setDoubleBuffer(false);
+            continue;
+        }
+        fail = true;
+    }
+    d->glFormat = fmt;
+    return vis;
+}
+
+/*
+  See qgl.cpp for qdoc comment.
+ */
+void *QGLContext::tryVisual(const QGLFormat& f, int bufDepth)
+{
+    Q_D(QGLContext);
+    int spec[45];
+    const QX11Info *xinfo = qt_x11Info(d->paintDevice);
+    bool useFBConfig = buildSpec(spec, f, d->paintDevice, bufDepth, false);
+
+    XVisualInfo* chosenVisualInfo = 0;
+
+#if defined(GLX_VERSION_1_3) && !defined(Q_OS_HPUX)
+    while (useFBConfig) {
+        GLXFBConfig *configs;
+        int configCount = 0;
+        configs = glXChooseFBConfig(xinfo->display(), xinfo->screen(), spec, &configCount);
+
+        if (!configs)
+            break; // fallback to trying glXChooseVisual
+
+        for (int i = 0; i < configCount; ++i) {
+            XVisualInfo* vi;
+            vi = glXGetVisualFromFBConfig(xinfo->display(), configs[i]);
+            if (!vi)
+                continue;
+
+#if !defined(QT_NO_XRENDER)
+            QWidget* w = 0;
+            if (d->paintDevice->devType() == QInternal::Widget)
+                w = static_cast<QWidget*>(d->paintDevice);
+
+            if (w && w->testAttribute(Qt::WA_TranslucentBackground) && f.alpha()) {
+                // Attempt to find a config who's visual has a proper alpha channel
+                XRenderPictFormat *pictFormat;
+                pictFormat = XRenderFindVisualFormat(xinfo->display(), vi->visual);
+
+                if (pictFormat && (pictFormat->type == PictTypeDirect) && pictFormat->direct.alphaMask) {
+                    // The pict format for the visual matching the FBConfig indicates ARGB
+                    if (chosenVisualInfo)
+                        XFree(chosenVisualInfo);
+                    chosenVisualInfo = vi;
+                    break;
+                }
+            } else
+#endif //QT_NO_XRENDER
+            if (chosenVisualInfo) {
+                // If we've got a visual we can use and we're not trying to find one with a
+                // real alpha channel, we might as well just use the one we've got
+                break;
+            }
+
+            if (!chosenVisualInfo)
+                chosenVisualInfo = vi; // Have something to fall back to
+            else
+                XFree(vi);
+        }
+
+        XFree(configs);
+        break;
+    }
+#endif // defined(GLX_VERSION_1_3)
+
+    if (!chosenVisualInfo)
+        chosenVisualInfo = glXChooseVisual(xinfo->display(), xinfo->screen(), spec);
+
+    return chosenVisualInfo;
+}
+
+
+void QGLContext::reset()
+{
+    Q_D(QGLContext);
+    if (!d->valid)
+        return;
+    d->cleanup();
+    const QX11Info *xinfo = qt_x11Info(d->paintDevice);
+    doneCurrent();
+    if (d->gpm)
+        glXDestroyGLXPixmap(xinfo->display(), (GLXPixmap)d->gpm);
+    d->gpm = 0;
+    glXDestroyContext(xinfo->display(), (GLXContext)d->cx);
+    if (d->vi)
+        XFree(d->vi);
+    d->vi = 0;
+    d->cx = 0;
+    d->crWin = false;
+    d->sharing = false;
+    d->valid = false;
+    d->transpColor = QColor();
+    d->initDone = false;
+    QGLContextGroup::removeShare(this);
+}
+
+
+void QGLContext::makeCurrent()
+{
+    Q_D(QGLContext);
+    if (!d->valid) {
+        qWarning("QGLContext::makeCurrent(): Cannot make invalid context current.");
+        return;
+    }
+    const QX11Info *xinfo = qt_x11Info(d->paintDevice);
+    bool ok = true;
+    if (d->paintDevice->devType() == QInternal::Pixmap) {
+        ok = glXMakeCurrent(xinfo->display(), (GLXPixmap)d->gpm, (GLXContext)d->cx);
+    } else if (d->paintDevice->devType() == QInternal::Pbuffer) {
+        ok = glXMakeCurrent(xinfo->display(), (GLXPbuffer)d->pbuf, (GLXContext)d->cx);
+    } else if (d->paintDevice->devType() == QInternal::Widget) {
+        ok = glXMakeCurrent(xinfo->display(), ((QWidget *)d->paintDevice)->internalWinId(), (GLXContext)d->cx);
+    }
+    if (!ok)
+        qWarning("QGLContext::makeCurrent(): Failed.");
+
+    if (ok)
+        QGLContextPrivate::setCurrentContext(this);
+}
+
+void QGLContext::doneCurrent()
+{
+    Q_D(QGLContext);
+    glXMakeCurrent(qt_x11Info(d->paintDevice)->display(), 0, 0);
+    QGLContextPrivate::setCurrentContext(0);
+}
+
+
+void QGLContext::swapBuffers() const
+{
+    Q_D(const QGLContext);
+    if (!d->valid)
+        return;
+    if (!deviceIsPixmap()) {
+        int interval = d->glFormat.swapInterval();
+        if (interval > 0) {
+            typedef int (*qt_glXGetVideoSyncSGI)(uint *);
+            typedef int (*qt_glXWaitVideoSyncSGI)(int, int, uint *);
+            static qt_glXGetVideoSyncSGI glXGetVideoSyncSGI = 0;
+            static qt_glXWaitVideoSyncSGI glXWaitVideoSyncSGI = 0;
+            static bool resolved = false;
+            if (!resolved) {
+                const QX11Info *xinfo = qt_x11Info(d->paintDevice);
+                QGLExtensionMatcher extensions(glXQueryExtensionsString(xinfo->display(), xinfo->screen()));
+                if (extensions.match("GLX_SGI_video_sync")) {
+                    glXGetVideoSyncSGI =  (qt_glXGetVideoSyncSGI)qglx_getProcAddress("glXGetVideoSyncSGI");
+                    glXWaitVideoSyncSGI = (qt_glXWaitVideoSyncSGI)qglx_getProcAddress("glXWaitVideoSyncSGI");
+                }
+                resolved = true;
+            }
+            if (glXGetVideoSyncSGI && glXWaitVideoSyncSGI) {
+                uint counter;
+                if (!glXGetVideoSyncSGI(&counter))
+                    glXWaitVideoSyncSGI(interval + 1, (counter + interval) % (interval + 1), &counter);
+            }
+        }
+        glXSwapBuffers(qt_x11Info(d->paintDevice)->display(),
+                       static_cast<QWidget *>(d->paintDevice)->winId());
+    }
+}
+
+QColor QGLContext::overlayTransparentColor() const
+{
+    if (isValid())
+        return Qt::transparent;
+    return QColor();                // Invalid color
+}
+
+static uint qt_transparent_pixel(VisualID id, int screen)
+{
+    for (int i = 0; i < trans_colors.size(); i++) {
+        if (trans_colors[i].vis == id && trans_colors[i].screen == screen)
+            return trans_colors[i].color;
+    }
+    return 0;
+}
+
+uint QGLContext::colorIndex(const QColor& c) const
+{
+    Q_D(const QGLContext);
+    int screen = ((XVisualInfo *)d->vi)->screen;
+    QColormap colmap = QColormap::instance(screen);
+    if (isValid()) {
+        if (format().plane() && c == Qt::transparent) {
+            return qt_transparent_pixel(((XVisualInfo *)d->vi)->visualid,
+                                        ((XVisualInfo *)d->vi)->screen);
+        }
+        if (((XVisualInfo*)d->vi)->visualid ==
+             XVisualIDFromVisual((Visual *) QX11Info::appVisual(screen)))
+            return colmap.pixel(c);                // We're using QColor's cmap
+
+        XVisualInfo *info = (XVisualInfo *) d->vi;
+        CMapEntryHash *hash = cmap_handler()->cmap_hash;
+        CMapEntryHash::ConstIterator it = hash->constFind(long(info->visualid)
+                + (info->screen * 256));
+        QCMapEntry *x = 0;
+        if (it != hash->constEnd())
+            x = it.value();
+        if (x && !x->alloc) {                // It's a standard colormap
+            int rf = (int)(((float)c.red() * (x->scmap.red_max+1))/256.0);
+            int gf = (int)(((float)c.green() * (x->scmap.green_max+1))/256.0);
+            int bf = (int)(((float)c.blue() * (x->scmap.blue_max+1))/256.0);
+            uint p = x->scmap.base_pixel
+                     + (rf * x->scmap.red_mult)
+                     + (gf * x->scmap.green_mult)
+                     + (bf * x->scmap.blue_mult);
+            return p;
+        } else {
+            QMap<int, QRgb> &cmap = (*cmap_handler()->qglcmap_hash)[(long)info->visualid];
+
+            // already in the map?
+            QRgb target = c.rgb();
+            QMap<int, QRgb>::Iterator it = cmap.begin();
+            for (; it != cmap.end(); ++it) {
+                if ((*it) == target)
+                    return it.key();
+            }
+
+            // need to alloc color
+            unsigned long plane_mask[2];
+            unsigned long color_map_entry;
+            if (!XAllocColorCells (QX11Info::display(), x->cmap, true, plane_mask, 0,
+                                   &color_map_entry, 1))
+                return colmap.pixel(c);
+
+            XColor col;
+            col.flags = DoRed | DoGreen | DoBlue;
+            col.pixel = color_map_entry;
+            col.red   = (ushort)((qRed(c.rgb()) / 255.0) * 65535.0 + 0.5);
+            col.green = (ushort)((qGreen(c.rgb()) / 255.0) * 65535.0 + 0.5);
+            col.blue  = (ushort)((qBlue(c.rgb()) / 255.0) * 65535.0 + 0.5);
+            XStoreColor(QX11Info::display(), x->cmap, &col);
+
+            cmap.insert(color_map_entry, target);
+            return color_map_entry;
+        }
+    }
+    return 0;
+}
+
+#ifndef QT_NO_FONTCONFIG
+/*! \internal
+    This is basically a substitute for glxUseXFont() which can only
+    handle XLFD fonts. This version relies on freetype to render the
+    glyphs, but it works with all fonts that fontconfig provides - both
+    antialiased and aliased bitmap and outline fonts.
+*/
+static void qgl_use_font(QFontEngineFT *engine, int first, int count, int listBase)
+{
+    GLfloat color[4];
+    glGetFloatv(GL_CURRENT_COLOR, color);
+
+    // save the pixel unpack state
+    GLint gl_swapbytes, gl_lsbfirst, gl_rowlength, gl_skiprows, gl_skippixels, gl_alignment;
+    glGetIntegerv (GL_UNPACK_SWAP_BYTES, &gl_swapbytes);
+    glGetIntegerv (GL_UNPACK_LSB_FIRST, &gl_lsbfirst);
+    glGetIntegerv (GL_UNPACK_ROW_LENGTH, &gl_rowlength);
+    glGetIntegerv (GL_UNPACK_SKIP_ROWS, &gl_skiprows);
+    glGetIntegerv (GL_UNPACK_SKIP_PIXELS, &gl_skippixels);
+    glGetIntegerv (GL_UNPACK_ALIGNMENT, &gl_alignment);
+
+    glPixelStorei(GL_UNPACK_SWAP_BYTES, GL_FALSE);
+    glPixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE);
+    glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
+    glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
+    glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
+    glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+
+    const bool antialiased = engine->drawAntialiased();
+    FT_Face face = engine->lockFace();
+
+    // start generating font glyphs
+    for (int i = first; i < count; ++i) {
+        int list = listBase + i;
+        GLfloat x0, y0, dx, dy;
+
+        FT_Error err;
+
+        err = FT_Load_Glyph(face, FT_Get_Char_Index(face, i), FT_LOAD_DEFAULT);
+        if (err) {
+            qDebug("failed loading glyph %d from font", i);
+            Q_ASSERT(!err);
+        }
+        err = FT_Render_Glyph(face->glyph, (antialiased ? FT_RENDER_MODE_NORMAL
+                                            : FT_RENDER_MODE_MONO));
+        if (err) {
+            qDebug("failed rendering glyph %d from font", i);
+            Q_ASSERT(!err);
+        }
+
+        FT_Bitmap bm = face->glyph->bitmap;
+        x0 = face->glyph->metrics.horiBearingX >> 6;
+        y0 = (face->glyph->metrics.height - face->glyph->metrics.horiBearingY) >> 6;
+        dx = face->glyph->metrics.horiAdvance >> 6;
+        dy = 0;
+        int sz = bm.pitch * bm.rows;
+        uint *aa_glyph = 0;
+        uchar *ua_glyph = 0;
+
+        if (antialiased)
+            aa_glyph = new uint[sz];
+        else
+            ua_glyph = new uchar[sz];
+
+        // convert to GL format
+        for (int y = 0; y < bm.rows; ++y) {
+            for (int x = 0; x < bm.pitch; ++x) {
+                int c1 = y*bm.pitch + x;
+                int c2 = (bm.rows - y - 1) > 0 ? (bm.rows-y-1)*bm.pitch + x : x;
+                if (antialiased) {
+                    aa_glyph[c1] = (int(color[0]*255) << 24)
+                                   | (int(color[1]*255) << 16)
+                                   | (int(color[2]*255) << 8) | bm.buffer[c2];
+                } else {
+                    ua_glyph[c1] = bm.buffer[c2];
+                }
+            }
+        }
+
+        glNewList(list, GL_COMPILE);
+        if (antialiased) {
+            // calling glBitmap() is just a trick to move the current
+            // raster pos, since glGet*() won't work in display lists
+            glBitmap(0, 0, 0, 0, x0, -y0, 0);
+            glDrawPixels(bm.pitch, bm.rows, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, aa_glyph);
+            glBitmap(0, 0, 0, 0, dx-x0, y0, 0);
+        } else {
+            glBitmap(bm.pitch*8, bm.rows, -x0, y0, dx, dy, ua_glyph);
+        }
+        glEndList();
+        antialiased ? delete[] aa_glyph : delete[] ua_glyph;
+    }
+
+    engine->unlockFace();
+
+    // restore pixel unpack settings
+    glPixelStorei(GL_UNPACK_SWAP_BYTES, gl_swapbytes);
+    glPixelStorei(GL_UNPACK_LSB_FIRST, gl_lsbfirst);
+    glPixelStorei(GL_UNPACK_ROW_LENGTH, gl_rowlength);
+    glPixelStorei(GL_UNPACK_SKIP_ROWS, gl_skiprows);
+    glPixelStorei(GL_UNPACK_SKIP_PIXELS, gl_skippixels);
+    glPixelStorei(GL_UNPACK_ALIGNMENT, gl_alignment);
+}
+#endif
+
+#undef d
+void QGLContext::generateFontDisplayLists(const QFont & fnt, int listBase)
+{
+    QFont f(fnt);
+    QFontEngine *engine = f.d->engineForScript(QUnicodeTables::Common);
+
+    if (engine->type() == QFontEngine::Multi)
+        engine = static_cast<QFontEngineMulti *>(engine)->engine(0);
+#ifndef QT_NO_FONTCONFIG
+    if(engine->type() == QFontEngine::Freetype) {
+        qgl_use_font(static_cast<QFontEngineFT *>(engine), 0, 256, listBase);
+        return;
+    }
+#endif
+    // glXUseXFont() only works with XLFD font structures and a few GL
+    // drivers crash if 0 is passed as the font handle
+    f.setStyleStrategy(QFont::OpenGLCompatible);
+    if (f.handle() && engine->type() == QFontEngine::XLFD)
+        glXUseXFont(static_cast<Font>(f.handle()), 0, 256, listBase);
+}
+
+void *QGLContext::getProcAddress(const QString &proc) const
+{
+    typedef void *(*qt_glXGetProcAddressARB)(const GLubyte *);
+    static qt_glXGetProcAddressARB glXGetProcAddressARB = 0;
+    static bool resolved = false;
+
+    if (resolved && !glXGetProcAddressARB)
+        return 0;
+    if (!glXGetProcAddressARB) {
+        QGLExtensionMatcher extensions(glXGetClientString(QX11Info::display(), GLX_EXTENSIONS));
+        if (extensions.match("GLX_ARB_get_proc_address")) {
+#if defined(Q_OS_LINUX) || defined(Q_OS_BSD4)
+            void *handle = dlopen(NULL, RTLD_LAZY);
+            if (handle) {
+                glXGetProcAddressARB = (qt_glXGetProcAddressARB) dlsym(handle, "glXGetProcAddressARB");
+                dlclose(handle);
+            }
+            if (!glXGetProcAddressARB)
+#endif
+            {
+#if !defined(QT_NO_LIBRARY)
+                extern const QString qt_gl_library_name();
+                QLibrary lib(qt_gl_library_name());
+                glXGetProcAddressARB = (qt_glXGetProcAddressARB) lib.resolve("glXGetProcAddressARB");
+#endif
+            }
+        }
+        resolved = true;
+    }
+    if (!glXGetProcAddressARB)
+        return 0;
+    return glXGetProcAddressARB(reinterpret_cast<const GLubyte *>(proc.toLatin1().data()));
+}
+
+/*
+    QGLTemporaryContext implementation
+*/
+
+class QGLTemporaryContextPrivate {
+public:
+    bool initialized;
+    Window drawable;
+    GLXContext context;
+    GLXDrawable oldDrawable;
+    GLXContext oldContext;
+};
+
+QGLTemporaryContext::QGLTemporaryContext(bool, QWidget *)
+    : d(new QGLTemporaryContextPrivate)
+{
+    d->initialized = false;
+    d->oldDrawable = 0;
+    d->oldContext = 0;
+    int screen = 0;
+
+    int attribs[] = {GLX_RGBA, XNone};
+    XVisualInfo *vi = glXChooseVisual(X11->display, screen, attribs);
+    if (!vi) {
+        qWarning("QGLTempContext: No GL capable X visuals available.");
+        return;
+    }
+
+    int useGL;
+    glXGetConfig(X11->display, vi, GLX_USE_GL, &useGL);
+    if (!useGL) {
+        XFree(vi);
+        return;
+    }
+
+    d->oldDrawable = glXGetCurrentDrawable();
+    d->oldContext = glXGetCurrentContext();
+
+    XSetWindowAttributes a;
+    a.colormap = qt_gl_choose_cmap(X11->display, vi);
+    d->drawable = XCreateWindow(X11->display, RootWindow(X11->display, screen),
+                                0, 0, 1, 1, 0,
+                                vi->depth, InputOutput, vi->visual,
+                                CWColormap, &a);
+    d->context = glXCreateContext(X11->display, vi, 0, True);
+    if (d->context && glXMakeCurrent(X11->display, d->drawable, d->context)) {
+        d->initialized = true;
+    } else {
+        qWarning("QGLTempContext: Unable to create GL context.");
+        XDestroyWindow(X11->display, d->drawable);
+    }
+    XFree(vi);
+}
+
+QGLTemporaryContext::~QGLTemporaryContext()
+{
+    if (d->initialized) {
+        glXMakeCurrent(X11->display, 0, 0);
+        glXDestroyContext(X11->display, d->context);
+        XDestroyWindow(X11->display, d->drawable);
+    }
+    if (d->oldDrawable && d->oldContext)
+        glXMakeCurrent(X11->display, d->oldDrawable, d->oldContext);
+}
+
+/*****************************************************************************
+  QGLOverlayWidget (Internal overlay class for X11)
+ *****************************************************************************/
+
+class QGLOverlayWidget : public QGLWidget
+{
+    Q_OBJECT
+public:
+    QGLOverlayWidget(const QGLFormat& format, QGLWidget* parent, const QGLWidget* shareWidget=0);
+
+protected:
+    void                initializeGL();
+    void                paintGL();
+    void                resizeGL(int w, int h);
+    bool                x11Event(XEvent *e) { return realWidget->x11Event(e); }
+
+private:
+    QGLWidget*                realWidget;
+
+private:
+    Q_DISABLE_COPY(QGLOverlayWidget)
+};
+
+
+QGLOverlayWidget::QGLOverlayWidget(const QGLFormat& format, QGLWidget* parent,
+                                   const QGLWidget* shareWidget)
+    : QGLWidget(format, parent, shareWidget ? shareWidget->d_func()->olw : 0)
+{
+    setAttribute(Qt::WA_X11OpenGLOverlay);
+    realWidget = parent;
+}
+
+
+
+void QGLOverlayWidget::initializeGL()
+{
+    QColor transparentColor = context()->overlayTransparentColor();
+    if (transparentColor.isValid())
+        qglClearColor(transparentColor);
+    else
+        qWarning("QGLOverlayWidget::initializeGL(): Could not get transparent color");
+    realWidget->initializeOverlayGL();
+}
+
+
+void QGLOverlayWidget::resizeGL(int w, int h)
+{
+    glViewport(0, 0, w, h);
+    realWidget->resizeOverlayGL(w, h);
+}
+
+
+void QGLOverlayWidget::paintGL()
+{
+    realWidget->paintOverlayGL();
+}
+
+#undef Bool
+QT_BEGIN_INCLUDE_NAMESPACE
+#include "qgl_x11.moc"
+QT_END_INCLUDE_NAMESPACE
+
+/*****************************************************************************
+  QGLWidget UNIX/GLX-specific code
+ *****************************************************************************/
+void QGLWidgetPrivate::init(QGLContext *context, const QGLWidget *shareWidget)
+{
+    Q_Q(QGLWidget);
+    initContext(context, shareWidget);
+    olw = 0;
+
+    if (q->isValid() && context->format().hasOverlay()) {
+        QString olwName = q->objectName();
+        olwName += QLatin1String("-QGL_internal_overlay_widget");
+        olw = new QGLOverlayWidget(QGLFormat::defaultOverlayFormat(), q, shareWidget);
+        olw->setObjectName(olwName);
+        if (olw->isValid()) {
+            olw->setAutoBufferSwap(false);
+            olw->setFocusProxy(q);
+        }
+        else {
+            delete olw;
+            olw = 0;
+            glcx->d_func()->glFormat.setOverlay(false);
+        }
+    }
+}
+
+bool QGLWidgetPrivate::renderCxPm(QPixmap* pm)
+{
+    Q_Q(QGLWidget);
+    if (((XVisualInfo*)glcx->d_func()->vi)->depth != pm->depth())
+        return false;
+
+    GLXPixmap glPm;
+#if defined(GLX_MESA_pixmap_colormap) && defined(QGL_USE_MESA_EXT)
+    glPm = glXCreateGLXPixmapMESA(X11->display,
+                                   (XVisualInfo*)glcx->vi,
+                                   (Pixmap)pm->handle(),
+                                   qt_gl_choose_cmap(pm->X11->display,
+                                                (XVisualInfo*)glcx->vi));
+#else
+    glPm = (quint32)glXCreateGLXPixmap(X11->display,
+                                         (XVisualInfo*)glcx->d_func()->vi,
+                                         (Pixmap)pm->handle());
+#endif
+
+    if (!glXMakeCurrent(X11->display, glPm, (GLXContext)glcx->d_func()->cx)) {
+        glXDestroyGLXPixmap(X11->display, glPm);
+        return false;
+    }
+
+    glDrawBuffer(GL_FRONT);
+    if (!glcx->initialized())
+        q->glInit();
+    q->resizeGL(pm->width(), pm->height());
+    q->paintGL();
+    glFlush();
+    q->makeCurrent();
+    glXDestroyGLXPixmap(X11->display, glPm);
+    q->resizeGL(q->width(), q->height());
+    return true;
+}
+
+/*! \internal
+  Free up any allocated colormaps. This fn is only called for
+  top-level widgets.
+*/
+void QGLWidgetPrivate::cleanupColormaps()
+{
+    if (!cmap.handle()) {
+        return;
+    } else {
+        XFreeColormap(X11->display, (Colormap) cmap.handle());
+        cmap.setHandle(0);
+    }
+}
+
+void QGLWidget::setMouseTracking(bool enable)
+{
+    Q_D(QGLWidget);
+    if (d->olw)
+        d->olw->setMouseTracking(enable);
+    QWidget::setMouseTracking(enable);
+}
+
+
+void QGLWidget::resizeEvent(QResizeEvent *)
+{
+    Q_D(QGLWidget);
+    if (!isValid())
+        return;
+    makeCurrent();
+    if (!d->glcx->initialized())
+        glInit();
+    glXWaitX();
+    resizeGL(width(), height());
+    if (d->olw)
+        d->olw->setGeometry(rect());
+}
+
+const QGLContext* QGLWidget::overlayContext() const
+{
+    Q_D(const QGLWidget);
+    if (d->olw)
+        return d->olw->context();
+    else
+        return 0;
+}
+
+
+void QGLWidget::makeOverlayCurrent()
+{
+    Q_D(QGLWidget);
+    if (d->olw)
+        d->olw->makeCurrent();
+}
+
+
+void QGLWidget::updateOverlayGL()
+{
+    Q_D(QGLWidget);
+    if (d->olw)
+        d->olw->updateGL();
+}
+
+/*!
+    \internal
+
+    Sets a new QGLContext, \a context, for this QGLWidget, using the
+    shared context, \a shareContext. If \a deleteOldContext is true,
+    the original context is deleted; otherwise it is overridden.
+*/
+void QGLWidget::setContext(QGLContext *context,
+                            const QGLContext* shareContext,
+                            bool deleteOldContext)
+{
+    Q_D(QGLWidget);
+    if (context == 0) {
+        qWarning("QGLWidget::setContext: Cannot set null context");
+        return;
+    }
+    if (!context->deviceIsPixmap() && context->device() != this) {
+        qWarning("QGLWidget::setContext: Context must refer to this widget");
+        return;
+    }
+
+    if (d->glcx)
+        d->glcx->doneCurrent();
+    QGLContext* oldcx = d->glcx;
+    d->glcx = context;
+
+    if (parentWidget()) {
+        // force creation of delay-created widgets
+        parentWidget()->winId();
+        if (parentWidget()->x11Info().screen() != x11Info().screen())
+            d_func()->xinfo = parentWidget()->d_func()->xinfo;
+    }
+
+    // If the application has set WA_TranslucentBackground and not explicitly set
+    // the alpha buffer size to zero, modify the format so it have an alpha channel
+    QGLFormat& fmt = d->glcx->d_func()->glFormat;
+    if (testAttribute(Qt::WA_TranslucentBackground) && fmt.alphaBufferSize() == -1)
+        fmt.setAlphaBufferSize(1);
+
+    bool createFailed = false;
+    if (!d->glcx->isValid()) {
+        if (!d->glcx->create(shareContext ? shareContext : oldcx))
+            createFailed = true;
+    }
+    if (createFailed) {
+        if (deleteOldContext)
+            delete oldcx;
+        return;
+    }
+
+    if (d->glcx->windowCreated() || d->glcx->deviceIsPixmap()) {
+        if (deleteOldContext)
+            delete oldcx;
+        return;
+    }
+
+    bool visible = isVisible();
+    if (visible)
+        hide();
+
+    XVisualInfo *vi = (XVisualInfo*)d->glcx->d_func()->vi;
+    XSetWindowAttributes a;
+
+    QColormap colmap = QColormap::instance(vi->screen);
+    a.colormap = qt_gl_choose_cmap(QX11Info::display(), vi);        // find best colormap
+    a.background_pixel = colmap.pixel(palette().color(backgroundRole()));
+    a.border_pixel = colmap.pixel(Qt::black);
+    Window p = RootWindow(X11->display, vi->screen);
+    if (parentWidget())
+        p = parentWidget()->winId();
+
+    Window w = XCreateWindow(X11->display, p, x(), y(), width(), height(),
+                              0, vi->depth, InputOutput, vi->visual,
+                              CWBackPixel|CWBorderPixel|CWColormap, &a);
+    Window *cmw;
+    Window *cmwret;
+    int count;
+    if (XGetWMColormapWindows(X11->display, window()->winId(),
+                                &cmwret, &count)) {
+        cmw = new Window[count+1];
+        memcpy((char *)cmw, (char *)cmwret, sizeof(Window)*count);
+        XFree((char *)cmwret);
+        int i;
+        for (i=0; i<count; i++) {
+            if (cmw[i] == winId()) {                // replace old window
+                cmw[i] = w;
+                break;
+            }
+        }
+        if (i >= count)                        // append new window
+            cmw[count++] = w;
+    } else {
+        count = 1;
+        cmw = new Window[count];
+        cmw[0] = w;
+    }
+
+#if defined(GLX_MESA_release_buffers) && defined(QGL_USE_MESA_EXT)
+    if (oldcx && oldcx->windowCreated())
+        glXReleaseBuffersMESA(X11->display, winId());
+#endif
+    if (deleteOldContext)
+        delete oldcx;
+    oldcx = 0;
+
+    if (testAttribute(Qt::WA_WState_Created))
+        create(w);
+    else
+        d->createWinId(w);
+    XSetWMColormapWindows(X11->display, window()->winId(), cmw, count);
+    delete [] cmw;
+
+    // calling QWidget::create() will always result in a new paint
+    // engine being created - get rid of it and replace it with our
+    // own
+
+    if (visible)
+        show();
+    XFlush(X11->display);
+    d->glcx->setWindowCreated(true);
+}
+
+const QGLColormap & QGLWidget::colormap() const
+{
+    Q_D(const QGLWidget);
+    return d->cmap;
+}
+
+/*\internal
+  Store color values in the given colormap.
+*/
+static void qStoreColors(QWidget * tlw, Colormap cmap,
+                          const QGLColormap & cols)
+{
+    Q_UNUSED(tlw);
+    XColor c;
+    QRgb color;
+
+    for (int i = 0; i < cols.size(); i++) {
+        color = cols.entryRgb(i);
+        c.pixel = i;
+        c.red   = (ushort)((qRed(color) / 255.0) * 65535.0 + 0.5);
+        c.green = (ushort)((qGreen(color) / 255.0) * 65535.0 + 0.5);
+        c.blue  = (ushort)((qBlue(color) / 255.0) * 65535.0 + 0.5);
+        c.flags = DoRed | DoGreen | DoBlue;
+        XStoreColor(X11->display, cmap, &c);
+    }
+}
+
+/*\internal
+  Check whether the given visual supports dynamic colormaps or not.
+*/
+static bool qCanAllocColors(QWidget * w)
+{
+    bool validVisual = false;
+    int  numVisuals;
+    long mask;
+    XVisualInfo templ;
+    XVisualInfo * visuals;
+    VisualID id = XVisualIDFromVisual((Visual *) w->window()->x11Info().visual());
+
+    mask = VisualScreenMask;
+    templ.screen = w->x11Info().screen();
+    visuals = XGetVisualInfo(X11->display, mask, &templ, &numVisuals);
+
+    for (int i = 0; i < numVisuals; i++) {
+        if (visuals[i].visualid == id) {
+            switch (visuals[i].c_class) {
+                case TrueColor:
+                case StaticColor:
+                case StaticGray:
+                case XGrayScale:
+                    validVisual = false;
+                    break;
+                case DirectColor:
+                case PseudoColor:
+                    validVisual = true;
+                    break;
+            }
+            break;
+        }
+    }
+    XFree(visuals);
+
+    if (!validVisual)
+        return false;
+    return true;
+}
+
+
+void QGLWidget::setColormap(const QGLColormap & c)
+{
+    Q_D(QGLWidget);
+    QWidget * tlw = window(); // must return a valid widget
+
+    d->cmap = c;
+    if (!d->cmap.handle())
+        return;
+
+    if (!qCanAllocColors(this)) {
+        qWarning("QGLWidget::setColormap: Cannot create a read/write "
+                  "colormap for this visual");
+        return;
+    }
+
+    // If the child GL widget is not of the same visual class as the
+    // toplevel widget we will get in trouble..
+    Window wid = tlw->winId();
+    Visual * vis = (Visual *) tlw->x11Info().visual();;
+    VisualID cvId = XVisualIDFromVisual((Visual *) x11Info().visual());
+    VisualID tvId = XVisualIDFromVisual((Visual *) tlw->x11Info().visual());
+    if (cvId != tvId) {
+        wid = winId();
+        vis = (Visual *) x11Info().visual();
+    }
+
+    if (!d->cmap.handle()) // allocate a cmap if necessary
+        d->cmap.setHandle(XCreateColormap(X11->display, wid, vis, AllocAll));
+
+    qStoreColors(this, (Colormap) d->cmap.handle(), c);
+    XSetWindowColormap(X11->display, wid, (Colormap) d->cmap.handle());
+
+    // tell the wm that this window has a special colormap
+    Window * cmw;
+    Window * cmwret;
+    int count;
+    if (XGetWMColormapWindows(X11->display, tlw->winId(), &cmwret, &count))
+    {
+        cmw = new Window[count+1];
+        memcpy((char *) cmw, (char *) cmwret, sizeof(Window) * count);
+        XFree((char *) cmwret);
+        int i;
+        for (i = 0; i < count; i++) {
+            if (cmw[i] == winId()) {
+                break;
+            }
+        }
+        if (i >= count)   // append new window only if not in the list
+            cmw[count++] = winId();
+    } else {
+        count = 1;
+        cmw = new Window[count];
+        cmw[0] = winId();
+    }
+    XSetWMColormapWindows(X11->display, tlw->winId(), cmw, count);
+    delete [] cmw;
+}
+
+// Solaris defines glXBindTexImageEXT as part of the GL library
+#if defined(GLX_VERSION_1_3) && !defined(Q_OS_HPUX)
+typedef void (*qt_glXBindTexImageEXT)(Display*, GLXDrawable, int, const int*);
+typedef void (*qt_glXReleaseTexImageEXT)(Display*, GLXDrawable, int);
+static qt_glXBindTexImageEXT glXBindTexImageEXT = 0;
+static qt_glXReleaseTexImageEXT glXReleaseTexImageEXT = 0;
+
+static bool qt_resolveTextureFromPixmap(QPaintDevice *paintDevice)
+{
+    static bool resolvedTextureFromPixmap = false;
+
+    if (!resolvedTextureFromPixmap) {
+        resolvedTextureFromPixmap = true;
+
+        // Check to see if we have NPOT texture support
+        if ( !(QGLExtensions::glExtensions() & QGLExtensions::NPOTTextures) &&
+             !(QGLFormat::openGLVersionFlags() & QGLFormat::OpenGL_Version_2_0))
+        {
+            return false; // Can't use TFP without NPOT
+        }
+
+        const QX11Info *xinfo = qt_x11Info(paintDevice);
+        Display *display = xinfo ? xinfo->display() : X11->display;
+        int screen = xinfo ? xinfo->screen() : X11->defaultScreen;
+
+        QGLExtensionMatcher serverExtensions(glXQueryExtensionsString(display, screen));
+        QGLExtensionMatcher clientExtensions(glXGetClientString(display, GLX_EXTENSIONS));
+        if (serverExtensions.match("GLX_EXT_texture_from_pixmap")
+            && clientExtensions.match("GLX_EXT_texture_from_pixmap"))
+        {
+            glXBindTexImageEXT = (qt_glXBindTexImageEXT) qglx_getProcAddress("glXBindTexImageEXT");
+            glXReleaseTexImageEXT = (qt_glXReleaseTexImageEXT) qglx_getProcAddress("glXReleaseTexImageEXT");
+        }
+    }
+
+    return glXBindTexImageEXT && glXReleaseTexImageEXT;
+}
+#endif //defined(GLX_VERSION_1_3) && !defined(Q_OS_HPUX)
+
+
+QGLTexture *QGLContextPrivate::bindTextureFromNativePixmap(QPixmap *pixmap, const qint64 key,
+                                                           QGLContext::BindOptions options)
+{
+#if !defined(GLX_VERSION_1_3) || defined(Q_OS_HPUX)
+    return 0;
+#else
+
+    // Check we have GLX 1.3, as it is needed for glXCreatePixmap & glXDestroyPixmap
+    int majorVersion = 0;
+    int minorVersion = 0;
+    glXQueryVersion(X11->display, &majorVersion, &minorVersion);
+    if (majorVersion < 1 || (majorVersion == 1 && minorVersion < 3))
+        return 0;
+
+    Q_Q(QGLContext);
+
+    QX11PixmapData *pixmapData = static_cast<QX11PixmapData*>(pixmap->data_ptr().data());
+    Q_ASSERT(pixmapData->classId() == QPixmapData::X11Class);
+
+    // We can't use TFP if the pixmap has a separate X11 mask
+    if (pixmapData->x11_mask)
+        return 0;
+
+    if (!qt_resolveTextureFromPixmap(paintDevice))
+        return 0;
+
+    const QX11Info &x11Info = pixmapData->xinfo;
+
+    // Store the configs (Can be static because configs aren't dependent on current context)
+    static GLXFBConfig glxRGBPixmapConfig = 0;
+    static bool RGBConfigInverted = false;
+    static GLXFBConfig glxRGBAPixmapConfig = 0;
+    static bool RGBAConfigInverted = false;
+
+    bool hasAlpha = pixmapData->hasAlphaChannel();
+
+    // Check to see if we need a config
+    if ( (hasAlpha && !glxRGBAPixmapConfig) || (!hasAlpha && !glxRGBPixmapConfig) ) {
+        GLXFBConfig    *configList = 0;
+        int             configCount = 0;
+
+        int configAttribs[] = {
+            hasAlpha ? GLX_BIND_TO_TEXTURE_RGBA_EXT : GLX_BIND_TO_TEXTURE_RGB_EXT, True,
+            GLX_DRAWABLE_TYPE, GLX_PIXMAP_BIT,
+            GLX_BIND_TO_TEXTURE_TARGETS_EXT, GLX_TEXTURE_2D_BIT_EXT,
+            // QGLContext::bindTexture() can't return an inverted texture, but QPainter::drawPixmap() can:
+            GLX_Y_INVERTED_EXT, options & QGLContext::CanFlipNativePixmapBindOption ? GLX_DONT_CARE : False,
+            XNone
+        };
+        configList = glXChooseFBConfig(x11Info.display(), x11Info.screen(), configAttribs, &configCount);
+        if (!configList)
+            return 0;
+
+        int yInv;
+        glXGetFBConfigAttrib(x11Info.display(), configList[0], GLX_Y_INVERTED_EXT, &yInv);
+
+        if (hasAlpha) {
+            glxRGBAPixmapConfig = configList[0];
+            RGBAConfigInverted = yInv;
+        }
+        else {
+            glxRGBPixmapConfig = configList[0];
+            RGBConfigInverted = yInv;
+        }
+
+        XFree(configList);
+    }
+
+    // Check to see if the surface is still valid
+    if (pixmapData->gl_surface &&
+        hasAlpha != (pixmapData->flags & QX11PixmapData::GlSurfaceCreatedWithAlpha))
+    {
+        // Surface is invalid!
+        destroyGlSurfaceForPixmap(pixmapData);
+    }
+
+    // Check to see if we need a surface
+    if (!pixmapData->gl_surface) {
+        GLXPixmap glxPixmap;
+        int pixmapAttribs[] = {
+            GLX_TEXTURE_FORMAT_EXT, hasAlpha ? GLX_TEXTURE_FORMAT_RGBA_EXT : GLX_TEXTURE_FORMAT_RGB_EXT,
+            GLX_TEXTURE_TARGET_EXT, GLX_TEXTURE_2D_EXT,
+            GLX_MIPMAP_TEXTURE_EXT, False, // Maybe needs to be don't care
+            XNone
+        };
+
+        // Wrap the X Pixmap into a GLXPixmap:
+        glxPixmap = glXCreatePixmap(x11Info.display(),
+                                    hasAlpha ? glxRGBAPixmapConfig : glxRGBPixmapConfig,
+                                    pixmapData->handle(), pixmapAttribs);
+
+        if (!glxPixmap)
+            return 0;
+
+        pixmapData->gl_surface = (void*)glxPixmap;
+
+        // Make sure the cleanup hook gets called so we can delete the glx pixmap
+        QImagePixmapCleanupHooks::enableCleanupHooks(pixmapData);
+    }
+
+    GLuint textureId;
+    glGenTextures(1, &textureId);
+    glBindTexture(GL_TEXTURE_2D, textureId);
+    glXBindTexImageEXT(x11Info.display(), (GLXPixmap)pixmapData->gl_surface, GLX_FRONT_LEFT_EXT, 0);
+
+    glBindTexture(GL_TEXTURE_2D, textureId);
+    GLuint filtering = (options & QGLContext::LinearFilteringBindOption) ? GL_LINEAR : GL_NEAREST;
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filtering);
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filtering);
+
+    if (!((hasAlpha && RGBAConfigInverted) || (!hasAlpha && RGBConfigInverted)))
+        options &= ~QGLContext::InvertedYBindOption;
+
+    QGLTexture *texture = new QGLTexture(q, textureId, GL_TEXTURE_2D, options);
+    if (texture->options & QGLContext::InvertedYBindOption)
+        pixmapData->flags |= QX11PixmapData::InvertedWhenBoundToTexture;
+
+    // We assume the cost of bound pixmaps is zero
+    QGLTextureCache::instance()->insert(q, key, texture, 0);
+
+    return texture;
+#endif //!defined(GLX_VERSION_1_3) || defined(Q_OS_HPUX)
+}
+
+
+void QGLContextPrivate::destroyGlSurfaceForPixmap(QPixmapData* pmd)
+{
+#if defined(GLX_VERSION_1_3) && !defined(Q_OS_HPUX)
+    Q_ASSERT(pmd->classId() == QPixmapData::X11Class);
+    QX11PixmapData *pixmapData = static_cast<QX11PixmapData*>(pmd);
+    if (pixmapData->gl_surface) {
+        glXDestroyPixmap(QX11Info::display(), (GLXPixmap)pixmapData->gl_surface);
+        pixmapData->gl_surface = 0;
+    }
+#endif
+}
+
+void QGLContextPrivate::unbindPixmapFromTexture(QPixmapData* pmd)
+{
+#if defined(GLX_VERSION_1_3) && !defined(Q_OS_HPUX)
+    Q_ASSERT(pmd->classId() == QPixmapData::X11Class);
+    Q_ASSERT(QGLContext::currentContext());
+    QX11PixmapData *pixmapData = static_cast<QX11PixmapData*>(pmd);
+    if (pixmapData->gl_surface)
+        glXReleaseTexImageEXT(QX11Info::display(), (GLXPixmap)pixmapData->gl_surface, GLX_FRONT_LEFT_EXT);
+#endif
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/qgl_x11egl.cpp b/src/opengl/qgl_x11egl.cpp
new file mode 100644
index 0000000000..2ddfd35f8d
--- /dev/null
+++ b/src/opengl/qgl_x11egl.cpp
@@ -0,0 +1,548 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qgl.h"
+#include <private/qt_x11_p.h>
+#include <private/qpixmap_x11_p.h>
+#include <private/qgl_p.h>
+#include <private/qpaintengine_opengl_p.h>
+#include "qgl_egl_p.h"
+#include "qcolormap.h"
+#include <QDebug>
+#include <QPixmap>
+
+
+QT_BEGIN_NAMESPACE
+
+
+/*
+    QGLTemporaryContext implementation
+*/
+
+class QGLTemporaryContextPrivate
+{
+public:
+    bool initialized;
+    Window window;
+    EGLContext context;
+    EGLSurface surface;
+    EGLDisplay display;
+};
+
+QGLTemporaryContext::QGLTemporaryContext(bool, QWidget *)
+    : d(new QGLTemporaryContextPrivate)
+{
+    d->initialized = false;
+    d->window = 0;
+    d->context = 0;
+    d->surface = 0;
+    int screen = 0;
+
+    d->display = QEgl::display();
+
+    EGLConfig config;
+    int numConfigs = 0;
+    EGLint attribs[] = {
+        EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
+#ifdef QT_OPENGL_ES_2
+        EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
+#endif
+        EGL_NONE
+    };
+
+    eglChooseConfig(d->display, attribs, &config, 1, &numConfigs);
+    if (!numConfigs) {
+        qWarning("QGLTemporaryContext: No EGL configurations available.");
+        return;
+    }
+
+    XVisualInfo visualInfo;
+    XVisualInfo *vi;
+    int numVisuals;
+
+    visualInfo.visualid = QEgl::getCompatibleVisualId(config);
+    vi = XGetVisualInfo(X11->display, VisualIDMask, &visualInfo, &numVisuals);
+    if (!vi || numVisuals < 1) {
+        qWarning("QGLTemporaryContext: Unable to get X11 visual info id.");
+        return;
+    }
+
+    XSetWindowAttributes attr;
+    unsigned long mask;
+    attr.background_pixel = 0;
+    attr.border_pixel = 0;
+    attr.colormap = XCreateColormap(X11->display, DefaultRootWindow(X11->display), vi->visual, AllocNone);
+    attr.event_mask = StructureNotifyMask | ExposureMask;
+    mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
+
+    d->window = XCreateWindow(X11->display, RootWindow(X11->display, screen),
+                              0, 0, 1, 1, 0,
+                              vi->depth, InputOutput, vi->visual,
+                              mask, &attr);
+
+    d->surface = eglCreateWindowSurface(d->display, config, (EGLNativeWindowType) d->window, NULL);
+
+    if (d->surface == EGL_NO_SURFACE) {
+        qWarning("QGLTemporaryContext: Error creating EGL surface.");
+        XFree(vi);
+        XDestroyWindow(X11->display, d->window);
+        return;
+    }
+
+    EGLint contextAttribs[] = {
+#ifdef QT_OPENGL_ES_2
+        EGL_CONTEXT_CLIENT_VERSION, 2,
+#endif
+        EGL_NONE
+    };
+    d->context = eglCreateContext(d->display, config, 0, contextAttribs);
+    if (d->context != EGL_NO_CONTEXT
+        && eglMakeCurrent(d->display, d->surface, d->surface, d->context))
+    {
+        d->initialized = true;
+    } else {
+        qWarning("QGLTemporaryContext: Error creating EGL context.");
+        eglDestroySurface(d->display, d->surface);
+        XDestroyWindow(X11->display, d->window);
+    }
+    XFree(vi);
+}
+
+QGLTemporaryContext::~QGLTemporaryContext()
+{
+    if (d->initialized) {
+        eglMakeCurrent(d->display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+        eglDestroyContext(d->display, d->context);
+        eglDestroySurface(d->display, d->surface);
+        XDestroyWindow(X11->display, d->window);
+    }
+}
+
+bool QGLFormat::hasOpenGLOverlays()
+{
+    return false;
+}
+
+// Chooses the EGL config and creates the EGL context
+bool QGLContext::chooseContext(const QGLContext* shareContext)
+{
+    Q_D(QGLContext);
+
+    if (!device())
+        return false;
+
+    int devType = device()->devType();
+
+    QX11PixmapData *x11PixmapData = 0;
+    if (devType == QInternal::Pixmap) {
+        QPixmapData *pmd = static_cast<QPixmap*>(device())->data_ptr().data();
+        if (pmd->classId() == QPixmapData::X11Class)
+            x11PixmapData = static_cast<QX11PixmapData*>(pmd);
+        else {
+            // TODO: Replace the pixmap's data with a new QX11PixmapData
+            qWarning("WARNING: Creating a QGLContext on a QPixmap is only supported for X11 pixmap backend");
+            return false;
+        }
+    } else if ((devType != QInternal::Widget) && (devType != QInternal::Pbuffer)) {
+        qWarning("WARNING: Creating a QGLContext not supported on device type %d", devType);
+        return false;
+    }
+
+    // Only create the eglContext if we don't already have one:
+    if (d->eglContext == 0) {
+        d->eglContext = new QEglContext();
+        d->ownsEglContext = true;
+        d->eglContext->setApi(QEgl::OpenGL);
+
+        // If the device is a widget with WA_TranslucentBackground set, make sure the glFormat
+        // has the alpha channel option set:
+        if (devType == QInternal::Widget) {
+            QWidget* widget = static_cast<QWidget*>(device());
+            if (widget->testAttribute(Qt::WA_TranslucentBackground))
+                d->glFormat.setAlpha(true);
+        }
+
+        // Construct the configuration we need for this surface.
+        QEglProperties configProps;
+        configProps.setDeviceType(devType);
+        configProps.setRenderableType(QEgl::OpenGL);
+        qt_eglproperties_set_glformat(configProps, d->glFormat);
+
+        // Set buffer preserved for regular QWidgets, QGLWidgets are ok with either preserved or destroyed:
+        if ((devType == QInternal::Widget) && qobject_cast<QGLWidget*>(static_cast<QWidget*>(device())) == 0)
+            configProps.setValue(EGL_SWAP_BEHAVIOR, EGL_BUFFER_PRESERVED);
+
+        if (!d->eglContext->chooseConfig(configProps, QEgl::BestPixelFormat)) {
+            delete d->eglContext;
+            d->eglContext = 0;
+            return false;
+        }
+
+        // Create a new context for the configuration.
+        QEglContext* eglSharedContext = shareContext ? shareContext->d_func()->eglContext : 0;
+        if (!d->eglContext->createContext(eglSharedContext)) {
+            delete d->eglContext;
+            d->eglContext = 0;
+            return false;
+        }
+        d->sharing = d->eglContext->isSharing();
+        if (d->sharing && shareContext)
+            const_cast<QGLContext *>(shareContext)->d_func()->sharing = true;
+    }
+
+    // Inform the higher layers about the actual format properties
+    qt_glformat_from_eglconfig(d->glFormat, d->eglContext->config());
+
+    // Do don't create the EGLSurface for everything.
+    //    QWidget - yes, create the EGLSurface and store it in QGLContextPrivate::eglSurface
+    //    QGLWidget - yes, create the EGLSurface and store it in QGLContextPrivate::eglSurface
+    //    QPixmap - yes, create the EGLSurface but store it in QX11PixmapData::gl_surface
+    //    QGLPixelBuffer - no, it creates the surface itself and stores it in QGLPixelBufferPrivate::pbuf
+
+    if (devType == QInternal::Widget) {
+        if (d->eglSurface != EGL_NO_SURFACE)
+            eglDestroySurface(d->eglContext->display(), d->eglSurface);
+        // extraWindowSurfaceCreationProps default to NULL unless were specifically set before
+        d->eglSurface = QEgl::createSurface(device(), d->eglContext->config(), d->extraWindowSurfaceCreationProps);
+        XFlush(X11->display);
+        setWindowCreated(true);
+    }
+
+    if (x11PixmapData) {
+        // TODO: Actually check to see if the existing surface can be re-used
+        if (x11PixmapData->gl_surface)
+            eglDestroySurface(d->eglContext->display(), (EGLSurface)x11PixmapData->gl_surface);
+
+        x11PixmapData->gl_surface = (void*)QEgl::createSurface(device(), d->eglContext->config());
+    }
+
+    return true;
+}
+
+void QGLWidget::resizeEvent(QResizeEvent *)
+{
+    Q_D(QGLWidget);
+    if (!isValid())
+        return;
+    makeCurrent();
+    if (!d->glcx->initialized())
+        glInit();
+    resizeGL(width(), height());
+    //handle overlay
+}
+
+const QGLContext* QGLWidget::overlayContext() const
+{
+    return 0;
+}
+
+void QGLWidget::makeOverlayCurrent()
+{
+    //handle overlay
+}
+
+void QGLWidget::updateOverlayGL()
+{
+    //handle overlay
+}
+
+void QGLWidget::setContext(QGLContext *context, const QGLContext* shareContext, bool deleteOldContext)
+{
+    Q_D(QGLWidget);
+    if (context == 0) {
+        qWarning("QGLWidget::setContext: Cannot set null context");
+        return;
+    }
+    if (!context->deviceIsPixmap() && context->device() != this) {
+        qWarning("QGLWidget::setContext: Context must refer to this widget");
+        return;
+    }
+
+    if (d->glcx)
+        d->glcx->doneCurrent();
+    QGLContext* oldcx = d->glcx;
+    d->glcx = context;
+
+    bool createFailed = false;
+    if (!d->glcx->isValid()) {
+        // Create the QGLContext here, which in turn chooses the EGL config
+        // and creates the EGL context:
+        if (!d->glcx->create(shareContext ? shareContext : oldcx))
+            createFailed = true;
+    }
+    if (createFailed) {
+        if (deleteOldContext)
+            delete oldcx;
+        return;
+    }
+
+
+    d->eglSurfaceWindowId = winId(); // Remember the window id we created the surface for
+}
+
+void QGLWidgetPrivate::init(QGLContext *context, const QGLWidget* shareWidget)
+{
+    Q_Q(QGLWidget);
+
+    initContext(context, shareWidget);
+
+    if (q->isValid() && glcx->format().hasOverlay()) {
+        //no overlay
+        qWarning("QtOpenGL ES doesn't currently support overlays");
+    }
+}
+
+void QGLWidgetPrivate::cleanupColormaps()
+{
+}
+
+const QGLColormap & QGLWidget::colormap() const
+{
+    return d_func()->cmap;
+}
+
+void QGLWidget::setColormap(const QGLColormap &)
+{
+}
+
+// Re-creates the EGL surface if the window ID has changed or if there isn't a surface
+void QGLWidgetPrivate::recreateEglSurface()
+{
+    Q_Q(QGLWidget);
+
+    Window currentId = q->winId();
+
+    // If the window ID has changed since the surface was created, we need to delete the
+    // old surface before re-creating a new one. Note: This should not be the case as the
+    // surface should be deleted before the old window id.
+    if (glcx->d_func()->eglSurface != EGL_NO_SURFACE && (currentId != eglSurfaceWindowId)) {
+        qWarning("EGL surface for deleted window %lx was not destroyed", uint(eglSurfaceWindowId));
+        glcx->d_func()->destroyEglSurfaceForDevice();
+    }
+
+    if (glcx->d_func()->eglSurface == EGL_NO_SURFACE) {
+        glcx->d_func()->eglSurface = glcx->d_func()->eglContext->createSurface(q);
+        eglSurfaceWindowId = currentId;
+    }
+}
+
+
+QGLTexture *QGLContextPrivate::bindTextureFromNativePixmap(QPixmap *pixmap, const qint64 key,
+                                                           QGLContext::BindOptions options)
+{
+    Q_Q(QGLContext);
+
+    // The EGL texture_from_pixmap has no facility to invert the y coordinate
+    if (!(options & QGLContext::CanFlipNativePixmapBindOption))
+        return 0;
+
+
+    static bool checkedForTFP = false;
+    static bool haveTFP = false;
+    static bool checkedForEglImageTFP = false;
+    static bool haveEglImageTFP = false;
+
+
+    if (!checkedForEglImageTFP) {
+        checkedForEglImageTFP = true;
+
+        // We need to be able to create an EGLImage from a native pixmap, which was split
+        // into a separate EGL extension, EGL_KHR_image_pixmap. It is possible to have
+        // eglCreateImageKHR & eglDestroyImageKHR without support for pixmaps, so we must
+        // check we have the EGLImage from pixmap functionality.
+        if (QEgl::hasExtension("EGL_KHR_image") || QEgl::hasExtension("EGL_KHR_image_pixmap")) {
+
+            // Being able to create an EGLImage from a native pixmap is also pretty useless
+            // without the ability to bind that EGLImage as a texture, which is provided by
+            // the GL_OES_EGL_image extension, which we try to resolve here:
+            haveEglImageTFP = qt_resolve_eglimage_gl_extensions(q);
+
+            if (haveEglImageTFP)
+                qDebug("Found EGL_KHR_image_pixmap & GL_OES_EGL_image extensions (preferred method)!");
+        }
+    }
+
+    if (!checkedForTFP) {
+        // Check for texture_from_pixmap egl extension
+        checkedForTFP = true;
+        if (QEgl::hasExtension("EGL_NOKIA_texture_from_pixmap") ||
+            QEgl::hasExtension("EGL_EXT_texture_from_pixmap"))
+        {
+            qDebug("Found texture_from_pixmap EGL extension!");
+            haveTFP = true;
+        }
+    }
+
+    if (!haveTFP && !haveEglImageTFP)
+        return 0;
+
+
+    QX11PixmapData *pixmapData = static_cast<QX11PixmapData*>(pixmap->data_ptr().data());
+    Q_ASSERT(pixmapData->classId() == QPixmapData::X11Class);
+    bool hasAlpha = pixmapData->hasAlphaChannel();
+    bool pixmapHasValidSurface = false;
+    bool textureIsBound = false;
+    GLuint textureId;
+    glGenTextures(1, &textureId);
+    glBindTexture(GL_TEXTURE_2D, textureId);
+
+    if (haveTFP && pixmapData->gl_surface &&
+        hasAlpha == (pixmapData->flags & QX11PixmapData::GlSurfaceCreatedWithAlpha))
+    {
+        pixmapHasValidSurface = true;
+    }
+
+    // If we already have a valid EGL surface for the pixmap, we should use it
+    if (pixmapHasValidSurface) {
+        EGLBoolean success;
+        success = eglBindTexImage(QEgl::display(), (EGLSurface)pixmapData->gl_surface, EGL_BACK_BUFFER);
+        if (success == EGL_FALSE) {
+            qWarning() << "eglBindTexImage() failed:" << QEgl::errorString();
+            eglDestroySurface(QEgl::display(), (EGLSurface)pixmapData->gl_surface);
+            pixmapData->gl_surface = (void*)EGL_NO_SURFACE;
+        } else
+            textureIsBound = true;
+    }
+
+    // If the pixmap doesn't already have a valid surface, try binding it via EGLImage
+    // first, as going through EGLImage should be faster and better supported:
+    if (!textureIsBound && haveEglImageTFP) {
+        EGLImageKHR eglImage;
+
+        EGLint attribs[] = {
+            EGL_IMAGE_PRESERVED_KHR, EGL_TRUE,
+            EGL_NONE
+        };
+        eglImage = QEgl::eglCreateImageKHR(QEgl::display(), EGL_NO_CONTEXT, EGL_NATIVE_PIXMAP_KHR,
+                                     (EGLClientBuffer)QEgl::nativePixmap(pixmap), attribs);
+
+        QGLContext* ctx = q;
+        glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, eglImage);
+
+        GLint err = glGetError();
+        if (err == GL_NO_ERROR)
+            textureIsBound = true;
+
+        // Once the egl image is bound, the texture becomes a new sibling image and we can safely
+        // destroy the EGLImage we created for the pixmap:
+        if (eglImage != EGL_NO_IMAGE_KHR)
+            QEgl::eglDestroyImageKHR(QEgl::display(), eglImage);
+    }
+
+    if (!textureIsBound && haveTFP) {
+        // Check to see if the surface is still valid
+        if (pixmapData->gl_surface &&
+            hasAlpha != (pixmapData->flags & QX11PixmapData::GlSurfaceCreatedWithAlpha))
+        {
+            // Surface is invalid!
+            destroyGlSurfaceForPixmap(pixmapData);
+        }
+
+        if (pixmapData->gl_surface == 0) {
+            EGLConfig config = QEgl::defaultConfig(QInternal::Pixmap,
+                                                   QEgl::OpenGL,
+                                                   hasAlpha ? QEgl::Translucent : QEgl::NoOptions);
+
+            pixmapData->gl_surface = (void*)QEgl::createSurface(pixmap, config);
+            if (pixmapData->gl_surface == (void*)EGL_NO_SURFACE)
+                return false;
+        }
+
+        EGLBoolean success;
+        success = eglBindTexImage(QEgl::display(), (EGLSurface)pixmapData->gl_surface, EGL_BACK_BUFFER);
+        if (success == EGL_FALSE) {
+            qWarning() << "eglBindTexImage() failed:" << QEgl::errorString();
+            eglDestroySurface(QEgl::display(), (EGLSurface)pixmapData->gl_surface);
+            pixmapData->gl_surface = (void*)EGL_NO_SURFACE;
+            haveTFP = false; // If TFP isn't working, disable it's use
+        } else
+            textureIsBound = true;
+    }
+
+    QGLTexture *texture = 0;
+
+    if (textureIsBound) {
+        texture = new QGLTexture(q, textureId, GL_TEXTURE_2D, options);
+        pixmapData->flags |= QX11PixmapData::InvertedWhenBoundToTexture;
+
+        // We assume the cost of bound pixmaps is zero
+        QGLTextureCache::instance()->insert(q, key, texture, 0);
+
+        glBindTexture(GL_TEXTURE_2D, textureId);
+    } else
+        glDeleteTextures(1, &textureId);
+
+    return texture;
+}
+
+
+void QGLContextPrivate::destroyGlSurfaceForPixmap(QPixmapData* pmd)
+{
+    Q_ASSERT(pmd->classId() == QPixmapData::X11Class);
+    QX11PixmapData *pixmapData = static_cast<QX11PixmapData*>(pmd);
+    if (pixmapData->gl_surface) {
+        EGLBoolean success;
+        success = eglDestroySurface(QEgl::display(), (EGLSurface)pixmapData->gl_surface);
+        if (success == EGL_FALSE) {
+            qWarning() << "destroyGlSurfaceForPixmap() - Error deleting surface: "
+                       << QEgl::errorString();
+        }
+        pixmapData->gl_surface = 0;
+    }
+}
+
+void QGLContextPrivate::unbindPixmapFromTexture(QPixmapData* pmd)
+{
+    Q_ASSERT(pmd->classId() == QPixmapData::X11Class);
+    QX11PixmapData *pixmapData = static_cast<QX11PixmapData*>(pmd);
+    if (pixmapData->gl_surface) {
+        EGLBoolean success;
+        success = eglReleaseTexImage(QEgl::display(),
+                                     (EGLSurface)pixmapData->gl_surface,
+                                     EGL_BACK_BUFFER);
+        if (success == EGL_FALSE) {
+            qWarning() << "unbindPixmapFromTexture() - Unable to release bound texture: "
+                       << QEgl::errorString();
+        }
+    }
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/qglbuffer.cpp b/src/opengl/qglbuffer.cpp
new file mode 100644
index 0000000000..d96f75bae2
--- /dev/null
+++ b/src/opengl/qglbuffer.cpp
@@ -0,0 +1,576 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtOpenGL/qgl.h>
+#include <QtOpenGL/private/qgl_p.h>
+#include <QtOpenGL/private/qglextensions_p.h>
+#include <QtCore/qatomic.h>
+#include "qglbuffer.h"
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \class QGLBuffer
+    \brief The QGLBuffer class provides functions for creating and managing GL buffer objects.
+    \since 4.7
+    \ingroup painting-3D
+
+    Buffer objects are created in the GL server so that the
+    client application can avoid uploading vertices, indices,
+    texture image data, etc every time they are needed.
+
+    QGLBuffer objects can be copied around as a reference to the
+    underlying GL buffer object:
+
+    \code
+    QGLBuffer buffer1(QGLBuffer::IndexBuffer);
+    buffer1.create();
+
+    QGLBuffer buffer2 = buffer1;
+    \endcode
+
+    QGLBuffer performs a shallow copy when objects are copied in this
+    manner, but does not implement copy-on-write semantics.  The original
+    object will be affected whenever the copy is modified.
+*/
+
+/*!
+    \enum QGLBuffer::Type
+    This enum defines the type of GL buffer object to create with QGLBuffer.
+
+    \value VertexBuffer Vertex buffer object for use when specifying
+           vertex arrays.
+    \value IndexBuffer Index buffer object for use with \c{glDrawElements()}.
+    \value PixelPackBuffer Pixel pack buffer object for reading pixel
+           data from the GL server (for example, with \c{glReadPixels()}).
+           Not supported under OpenGL/ES.
+    \value PixelUnpackBuffer Pixel unpack buffer object for writing pixel
+           data to the GL server (for example, with \c{glTexImage2D()}).
+           Not supported under OpenGL/ES.
+*/
+
+/*!
+    \enum QGLBuffer::UsagePattern
+    This enum defines the usage pattern of a QGLBuffer object.
+
+    \value StreamDraw The data will be set once and used a few times
+           for drawing operations.  Under OpenGL/ES 1.1 this is identical
+           to StaticDraw.
+    \value StreamRead The data will be set once and used a few times
+           for reading data back from the GL server.  Not supported
+           under OpenGL/ES.
+    \value StreamCopy The data will be set once and used a few times
+           for reading data back from the GL server for use in further
+           drawing operations.  Not supported under OpenGL/ES.
+    \value StaticDraw The data will be set once and used many times
+           for drawing operations.
+    \value StaticRead The data will be set once and used many times
+           for reading data back from the GL server.  Not supported
+           under OpenGL/ES.
+    \value StaticCopy The data will be set once and used many times
+           for reading data back from the GL server for use in further
+           drawing operations.  Not supported under OpenGL/ES.
+    \value DynamicDraw The data will be modified repeatedly and used
+           many times for drawing operations.
+    \value DynamicRead The data will be modified repeatedly and used
+           many times for reading data back from the GL server.
+           Not supported under OpenGL/ES.
+    \value DynamicCopy The data will be modified repeatedly and used
+           many times for reading data back from the GL server for
+           use in further drawing operations.  Not supported under OpenGL/ES.
+*/
+
+/*!
+    \enum QGLBuffer::Access
+    This enum defines the access mode for QGLBuffer::map().
+
+    \value ReadOnly The buffer will be mapped for reading only.
+    \value WriteOnly The buffer will be mapped for writing only.
+    \value ReadWrite The buffer will be mapped for reading and writing.
+*/
+
+class QGLBufferPrivate
+{
+public:
+    QGLBufferPrivate(QGLBuffer::Type t)
+        : ref(1),
+          type(t),
+          guard(0),
+          usagePattern(QGLBuffer::StaticDraw),
+          actualUsagePattern(QGLBuffer::StaticDraw)
+    {
+    }
+
+    QAtomicInt ref;
+    QGLBuffer::Type type;
+    QGLSharedResourceGuard guard;
+    QGLBuffer::UsagePattern usagePattern;
+    QGLBuffer::UsagePattern actualUsagePattern;
+};
+
+/*!
+    Constructs a new buffer object of type QGLBuffer::VertexBuffer.
+
+    Note: this constructor just creates the QGLBuffer instance.  The actual
+    buffer object in the GL server is not created until create() is called.
+
+    \sa create()
+*/
+QGLBuffer::QGLBuffer()
+    : d_ptr(new QGLBufferPrivate(QGLBuffer::VertexBuffer))
+{
+}
+
+/*!
+    Constructs a new buffer object of \a type.
+
+    Note: this constructor just creates the QGLBuffer instance.  The actual
+    buffer object in the GL server is not created until create() is called.
+
+    \sa create()
+*/
+QGLBuffer::QGLBuffer(QGLBuffer::Type type)
+    : d_ptr(new QGLBufferPrivate(type))
+{
+}
+
+/*!
+    Constructs a shallow copy of \a other.
+
+    Note: QGLBuffer does not implement copy-on-write semantics,
+    so \a other will be affected whenever the copy is modified.
+*/
+QGLBuffer::QGLBuffer(const QGLBuffer &other)
+    : d_ptr(other.d_ptr)
+{
+    d_ptr->ref.ref();
+}
+
+#define ctx d->guard.context()
+
+/*!
+    Destroys this buffer object, including the storage being
+    used in the GL server.
+*/
+QGLBuffer::~QGLBuffer()
+{
+    if (!d_ptr->ref.deref()) {
+        destroy();
+        delete d_ptr;
+    }
+}
+
+/*!
+    Assigns a shallow copy of \a other to this object.
+
+    Note: QGLBuffer does not implement copy-on-write semantics,
+    so \a other will be affected whenever the copy is modified.
+*/
+QGLBuffer &QGLBuffer::operator=(const QGLBuffer &other)
+{
+    if (d_ptr != other.d_ptr) {
+        other.d_ptr->ref.ref();
+        if (!d_ptr->ref.deref())
+            destroy();
+        d_ptr = other.d_ptr;
+    }
+    return *this;
+}
+
+/*!
+    Returns the type of buffer represented by this object.
+*/
+QGLBuffer::Type QGLBuffer::type() const
+{
+    Q_D(const QGLBuffer);
+    return d->type;
+}
+
+/*!
+    Returns the usage pattern for this buffer object.
+    The default value is StaticDraw.
+
+    \sa setUsagePattern()
+*/
+QGLBuffer::UsagePattern QGLBuffer::usagePattern() const
+{
+    Q_D(const QGLBuffer);
+    return d->usagePattern;
+}
+
+/*!
+    Sets the usage pattern for this buffer object to \a value.
+    This function must be called before allocate() or write().
+
+    \sa usagePattern(), allocate(), write()
+*/
+void QGLBuffer::setUsagePattern(QGLBuffer::UsagePattern value)
+{
+    Q_D(QGLBuffer);
+#if defined(QT_OPENGL_ES_1)
+    // OpenGL/ES 1.1 does not support GL_STREAM_DRAW, so use GL_STATIC_DRAW.
+    // OpenGL/ES 2.0 does support GL_STREAM_DRAW.
+    d->usagePattern = value;
+    if (value == StreamDraw)
+        d->actualUsagePattern = StaticDraw;
+    else
+        d->actualUsagePattern = value;
+#else
+    d->usagePattern = d->actualUsagePattern = value;
+#endif
+}
+
+#undef ctx
+
+/*!
+    Creates the buffer object in the GL server.  Returns true if
+    the object was created; false otherwise.
+
+    This function must be called with a current QGLContext.
+    The buffer will be bound to and can only be used in
+    that context (or any other context that is shared with it).
+
+    This function will return false if the GL implementation
+    does not support buffers, or there is no current QGLContext.
+
+    \sa isCreated(), allocate(), write(), destroy()
+*/
+bool QGLBuffer::create()
+{
+    Q_D(QGLBuffer);
+    if (d->guard.id())
+        return true;
+    const QGLContext *ctx = QGLContext::currentContext();
+    if (ctx) {
+        if (!qt_resolve_buffer_extensions(const_cast<QGLContext *>(ctx)))
+            return false;
+        GLuint bufferId = 0;
+        glGenBuffers(1, &bufferId);
+        if (bufferId) {
+            d->guard.setContext(ctx);
+            d->guard.setId(bufferId);
+            return true;
+        }
+    }
+    return false;
+}
+
+#define ctx d->guard.context()
+
+/*!
+    Returns true if this buffer has been created; false otherwise.
+
+    \sa create(), destroy()
+*/
+bool QGLBuffer::isCreated() const
+{
+    Q_D(const QGLBuffer);
+    return d->guard.id() != 0;
+}
+
+/*!
+    Destroys this buffer object, including the storage being
+    used in the GL server.  All references to the buffer will
+    become invalid.
+*/
+void QGLBuffer::destroy()
+{
+    Q_D(QGLBuffer);
+    GLuint bufferId = d->guard.id();
+    if (bufferId) {
+        // Switch to the original creating context to destroy it.
+        QGLShareContextScope scope(d->guard.context());
+        glDeleteBuffers(1, &bufferId);
+    }
+    d->guard.setId(0);
+    d->guard.setContext(0);
+}
+
+/*!
+    Reads the \a count bytes in this buffer starting at \a offset
+    into \a data.  Returns true on success; false if reading from
+    the buffer is not supported.  Buffer reading is not supported
+    under OpenGL/ES.
+
+    It is assumed that this buffer has been bound to the current context.
+
+    \sa write(), bind()
+*/
+bool QGLBuffer::read(int offset, void *data, int count)
+{
+#if !defined(QT_OPENGL_ES)
+    Q_D(QGLBuffer);
+    if (!glGetBufferSubData || !d->guard.id())
+        return false;
+    while (glGetError() != GL_NO_ERROR) ; // Clear error state.
+    glGetBufferSubData(d->type, offset, count, data);
+    return glGetError() == GL_NO_ERROR;
+#else
+    Q_UNUSED(offset);
+    Q_UNUSED(data);
+    Q_UNUSED(count);
+    return false;
+#endif
+}
+
+/*!
+    Replaces the \a count bytes of this buffer starting at \a offset
+    with the contents of \a data.  Any other bytes in the buffer
+    will be left unmodified.
+
+    It is assumed that create() has been called on this buffer and that
+    it has been bound to the current context.
+
+    \sa create(), read(), allocate()
+*/
+void QGLBuffer::write(int offset, const void *data, int count)
+{
+#ifndef QT_NO_DEBUG
+    if (!isCreated())
+        qWarning("QGLBuffer::allocate(): buffer not created");
+#endif
+    Q_D(QGLBuffer);
+    if (d->guard.id())
+        glBufferSubData(d->type, offset, count, data);
+}
+
+/*!
+    Allocates \a count bytes of space to the buffer, initialized to
+    the contents of \a data.  Any previous contents will be removed.
+
+    It is assumed that create() has been called on this buffer and that
+    it has been bound to the current context.
+
+    \sa create(), read(), write()
+*/
+void QGLBuffer::allocate(const void *data, int count)
+{
+#ifndef QT_NO_DEBUG
+    if (!isCreated())
+        qWarning("QGLBuffer::allocate(): buffer not created");
+#endif
+    Q_D(QGLBuffer);
+    if (d->guard.id())
+        glBufferData(d->type, count, data, d->actualUsagePattern);
+}
+
+/*!
+    \fn void QGLBuffer::allocate(int count)
+    \overload
+
+    Allocates \a count bytes of space to the buffer.  Any previous
+    contents will be removed.
+
+    It is assumed that create() has been called on this buffer and that
+    it has been bound to the current context.
+
+    \sa create(), write()
+*/
+
+/*!
+    Binds the buffer associated with this object to the current
+    GL context.  Returns false if binding was not possible, usually because
+    type() is not supported on this GL implementation.
+
+    The buffer must be bound to the same QGLContext current when create()
+    was called, or to another QGLContext that is sharing with it.
+    Otherwise, false will be returned from this function.
+
+    \sa release(), create()
+*/
+bool QGLBuffer::bind()
+{
+#ifndef QT_NO_DEBUG
+    if (!isCreated())
+        qWarning("QGLBuffer::bind(): buffer not created");
+#endif
+    Q_D(const QGLBuffer);
+    GLuint bufferId = d->guard.id();
+    if (bufferId) {
+        if (!QGLContext::areSharing(QGLContext::currentContext(),
+                                    d->guard.context())) {
+#ifndef QT_NO_DEBUG
+            qWarning("QGLBuffer::bind: buffer is not valid in the current context");
+#endif
+            return false;
+        }
+        glBindBuffer(d->type, bufferId);
+        return true;
+    } else {
+        return false;
+    }
+}
+
+/*!
+    Releases the buffer associated with this object from the
+    current GL context.
+
+    This function must be called with the same QGLContext current
+    as when bind() was called on the buffer.
+
+    \sa bind()
+*/
+void QGLBuffer::release()
+{
+#ifndef QT_NO_DEBUG
+    if (!isCreated())
+        qWarning("QGLBuffer::release(): buffer not created");
+#endif
+    Q_D(const QGLBuffer);
+    if (d->guard.id())
+        glBindBuffer(d->type, 0);
+}
+
+#undef ctx
+
+/*!
+    Releases the buffer associated with \a type in the current
+    QGLContext.
+
+    This function is a direct call to \c{glBindBuffer(type, 0)}
+    for use when the caller does not know which QGLBuffer has
+    been bound to the context but wants to make sure that it
+    is released.
+
+    \code
+    QGLBuffer::release(QGLBuffer::VertexBuffer);
+    \endcode
+*/
+void QGLBuffer::release(QGLBuffer::Type type)
+{
+    const QGLContext *ctx = QGLContext::currentContext();
+    if (ctx && qt_resolve_buffer_extensions(const_cast<QGLContext *>(ctx)))
+        glBindBuffer(GLenum(type), 0);
+}
+
+#define ctx d->guard.context()
+
+/*!
+    Returns the GL identifier associated with this buffer; zero if
+    the buffer has not been created.
+
+    \sa isCreated()
+*/
+GLuint QGLBuffer::bufferId() const
+{
+    Q_D(const QGLBuffer);
+    return d->guard.id();
+}
+
+#ifndef GL_BUFFER_SIZE
+#define GL_BUFFER_SIZE 0x8764
+#endif
+
+/*!
+    Returns the size of the data in this buffer, for reading operations.
+    Returns -1 if fetching the buffer size is not supported, or the
+    buffer has not been created.
+
+    It is assumed that this buffer has been bound to the current context.
+
+    \sa isCreated(), bind()
+*/
+int QGLBuffer::size() const
+{
+    Q_D(const QGLBuffer);
+    if (!d->guard.id())
+        return -1;
+    GLint value = -1;
+    glGetBufferParameteriv(d->type, GL_BUFFER_SIZE, &value);
+    return value;
+}
+
+/*!
+    Maps the contents of this buffer into the application's memory
+    space and returns a pointer to it.  Returns null if memory
+    mapping is not possible.  The \a access parameter indicates the
+    type of access to be performed.
+
+    It is assumed that create() has been called on this buffer and that
+    it has been bound to the current context.
+
+    This function is only supported under OpenGL/ES if the
+    \c{GL_OES_mapbuffer} extension is present.
+
+    \sa unmap(), create(), bind()
+*/
+void *QGLBuffer::map(QGLBuffer::Access access)
+{
+    Q_D(QGLBuffer);
+#ifndef QT_NO_DEBUG
+    if (!isCreated())
+        qWarning("QGLBuffer::map(): buffer not created");
+#endif
+    if (!d->guard.id())
+        return 0;
+    if (!glMapBufferARB)
+        return 0;
+    return glMapBufferARB(d->type, access);
+}
+
+/*!
+    Unmaps the buffer after it was mapped into the application's
+    memory space with a previous call to map().  Returns true if
+    the unmap succeeded; false otherwise.
+
+    It is assumed that this buffer has been bound to the current context,
+    and that it was previously mapped with map().
+
+    This function is only supported under OpenGL/ES if the
+    \c{GL_OES_mapbuffer} extension is present.
+
+    \sa map()
+*/
+bool QGLBuffer::unmap()
+{
+    Q_D(QGLBuffer);
+#ifndef QT_NO_DEBUG
+    if (!isCreated())
+        qWarning("QGLBuffer::unmap(): buffer not created");
+#endif
+    if (!d->guard.id())
+        return false;
+    if (!glUnmapBufferARB)
+        return false;
+    return glUnmapBufferARB(d->type) == GL_TRUE;
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/qglbuffer.h b/src/opengl/qglbuffer.h
new file mode 100644
index 0000000000..97ea589053
--- /dev/null
+++ b/src/opengl/qglbuffer.h
@@ -0,0 +1,132 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QGLBUFFER_H
+#define QGLBUFFER_H
+
+#include <QtCore/qscopedpointer.h>
+#include <QtOpenGL/qgl.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(OpenGL)
+
+class QGLBufferPrivate;
+
+class Q_OPENGL_EXPORT QGLBuffer
+{
+public:
+    enum Type
+    {
+        VertexBuffer        = 0x8892, // GL_ARRAY_BUFFER
+        IndexBuffer         = 0x8893, // GL_ELEMENT_ARRAY_BUFFER
+        PixelPackBuffer     = 0x88EB, // GL_PIXEL_PACK_BUFFER
+        PixelUnpackBuffer   = 0x88EC  // GL_PIXEL_UNPACK_BUFFER
+    };
+
+    QGLBuffer();
+    explicit QGLBuffer(QGLBuffer::Type type);
+    QGLBuffer(const QGLBuffer &other);
+    ~QGLBuffer();
+
+    QGLBuffer &operator=(const QGLBuffer &other);
+
+    enum UsagePattern
+    {
+        StreamDraw          = 0x88E0, // GL_STREAM_DRAW
+        StreamRead          = 0x88E1, // GL_STREAM_READ
+        StreamCopy          = 0x88E2, // GL_STREAM_COPY
+        StaticDraw          = 0x88E4, // GL_STATIC_DRAW
+        StaticRead          = 0x88E5, // GL_STATIC_READ
+        StaticCopy          = 0x88E6, // GL_STATIC_COPY
+        DynamicDraw         = 0x88E8, // GL_DYNAMIC_DRAW
+        DynamicRead         = 0x88E9, // GL_DYNAMIC_READ
+        DynamicCopy         = 0x88EA  // GL_DYNAMIC_COPY
+    };
+
+    enum Access
+    {
+        ReadOnly            = 0x88B8, // GL_READ_ONLY
+        WriteOnly           = 0x88B9, // GL_WRITE_ONLY
+        ReadWrite           = 0x88BA  // GL_READ_WRITE
+    };
+
+    QGLBuffer::Type type() const;
+
+    QGLBuffer::UsagePattern usagePattern() const;
+    void setUsagePattern(QGLBuffer::UsagePattern value);
+
+    bool create();
+    bool isCreated() const;
+
+    void destroy();
+
+    bool bind();
+    void release();
+
+    static void release(QGLBuffer::Type type);
+
+    GLuint bufferId() const;
+
+    int size() const;
+
+    bool read(int offset, void *data, int count);
+    void write(int offset, const void *data, int count);
+
+    void allocate(const void *data, int count);
+    inline void allocate(int count) { allocate(0, count); }
+
+    void *map(QGLBuffer::Access access);
+    bool unmap();
+
+private:
+    QGLBufferPrivate *d_ptr;
+
+    Q_DECLARE_PRIVATE(QGLBuffer)
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif
diff --git a/src/opengl/qglcolormap.cpp b/src/opengl/qglcolormap.cpp
new file mode 100644
index 0000000000..facc5ba938
--- /dev/null
+++ b/src/opengl/qglcolormap.cpp
@@ -0,0 +1,297 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*!
+    \class QGLColormap
+    \brief The QGLColormap class is used for installing custom colormaps into
+    a QGLWidget.
+
+    \module OpenGL
+    \ingroup painting-3D
+    \ingroup shared
+
+    QGLColormap provides a platform independent way of specifying and
+    installing indexed colormaps for a QGLWidget. QGLColormap is
+    especially useful when using the OpenGL color-index mode.
+
+    Under X11 you must use an X server that supports either a \c
+    PseudoColor or \c DirectColor visual class. If your X server
+    currently only provides a \c GrayScale, \c TrueColor, \c
+    StaticColor or \c StaticGray visual, you will not be able to
+    allocate colorcells for writing. If this is the case, try setting
+    your X server to 8 bit mode. It should then provide you with at
+    least a \c PseudoColor visual. Note that you may experience
+    colormap flashing if your X server is running in 8 bit mode.
+
+    The size() of the colormap is always set to 256
+    colors. Note that under Windows you can also install colormaps
+    in child widgets.
+
+    This class uses \l{implicit sharing} as a memory and speed
+    optimization.
+
+    Example of use:
+    \snippet doc/src/snippets/code/src_opengl_qglcolormap.cpp 0
+
+    \sa QGLWidget::setColormap(), QGLWidget::colormap()
+*/
+
+/*!
+    \fn Qt::HANDLE QGLColormap::handle()
+
+    \internal
+
+    Returns the handle for this color map.
+*/
+
+/*!
+    \fn void QGLColormap::setHandle(Qt::HANDLE handle)
+
+    \internal
+
+    Sets the handle for this color map to \a handle.
+*/
+
+#include "qglcolormap.h"
+
+QT_BEGIN_NAMESPACE
+
+QGLColormap::QGLColormapData QGLColormap::shared_null = { Q_BASIC_ATOMIC_INITIALIZER(1), 0, 0 };
+
+/*!
+    Construct a QGLColormap.
+*/
+QGLColormap::QGLColormap()
+    : d(&shared_null)
+{
+    d->ref.ref();
+}
+
+
+/*!
+    Construct a shallow copy of \a map.
+*/
+QGLColormap::QGLColormap(const QGLColormap &map)
+    : d(map.d)
+{
+    d->ref.ref();
+}
+
+/*!
+    Dereferences the QGLColormap and deletes it if this was the last
+    reference to it.
+*/
+QGLColormap::~QGLColormap()
+{
+    if (!d->ref.deref())
+        cleanup(d);
+}
+
+void QGLColormap::cleanup(QGLColormap::QGLColormapData *x)
+{
+    delete x->cells;
+    x->cells = 0;
+    delete x;
+}
+
+/*!
+    Assign a shallow copy of \a map to this QGLColormap.
+*/
+QGLColormap & QGLColormap::operator=(const QGLColormap &map)
+{
+    map.d->ref.ref();
+    if (!d->ref.deref())
+        cleanup(d);
+    d = map.d;
+    return *this;
+}
+
+/*!
+    \fn void QGLColormap::detach()
+    \internal
+
+    Detaches this QGLColormap from the shared block.
+*/
+
+void QGLColormap::detach_helper()
+{
+    QGLColormapData *x = new QGLColormapData;
+    x->ref = 1;
+    x->cmapHandle = 0;
+    x->cells = 0;
+    if (d->cells) {
+        x->cells = new QVector<QRgb>(256);
+        *x->cells = *d->cells;
+    }
+    if (!d->ref.deref())
+        cleanup(d);
+    d = x;
+}
+
+/*!
+    Set cell at index \a idx in the colormap to color \a color.
+*/
+void QGLColormap::setEntry(int idx, QRgb color)
+{
+    detach();
+    if (!d->cells)
+        d->cells = new QVector<QRgb>(256);
+    d->cells->replace(idx, color);
+}
+
+/*!
+    Set an array of cells in this colormap. \a count is the number of
+    colors that should be set, \a colors is the array of colors, and
+    \a base is the starting index.  The first element in \a colors
+    is set at \a base in the colormap.
+*/
+void QGLColormap::setEntries(int count, const QRgb *colors, int base)
+{
+    detach();
+    if (!d->cells)
+        d->cells = new QVector<QRgb>(256);
+
+    Q_ASSERT_X(colors && base >= 0 && (base + count) <= d->cells->size(), "QGLColormap::setEntries",
+               "preconditions not met");
+    for (int i = 0; i < count; ++i)
+        setEntry(base + i, colors[i]);
+}
+
+/*!
+    Returns the QRgb value in the colorcell with index \a idx.
+*/
+QRgb QGLColormap::entryRgb(int idx) const
+{
+    if (d == &shared_null || !d->cells)
+        return 0;
+    else
+        return d->cells->at(idx);
+}
+
+/*!
+    \overload
+
+    Set the cell with index \a idx in the colormap to color \a color.
+*/
+void QGLColormap::setEntry(int idx, const QColor &color)
+{
+    setEntry(idx, color.rgb());
+}
+
+/*!
+    Returns the QRgb value in the colorcell with index \a idx.
+*/
+QColor QGLColormap::entryColor(int idx) const
+{
+    if (d == &shared_null || !d->cells)
+        return QColor();
+    else
+        return QColor(d->cells->at(idx));
+}
+
+/*!
+    Returns true if the colormap is empty or it is not in use
+    by a QGLWidget; otherwise returns false.
+
+    A colormap with no color values set is considered to be empty.
+    For historical reasons, a colormap that has color values set
+    but which is not in use by a QGLWidget is also considered empty.
+
+    Compare size() with zero to determine if the colormap is empty
+    regardless of whether it is in use by a QGLWidget or not.
+
+    \sa size()
+*/
+bool QGLColormap::isEmpty() const
+{
+    return d == &shared_null || d->cells == 0 || d->cells->size() == 0 || d->cmapHandle == 0;
+}
+
+
+/*!
+    Returns the number of colorcells in the colormap.
+*/
+int QGLColormap::size() const
+{
+    return d->cells ? d->cells->size() : 0;
+}
+
+/*!
+    Returns the index of the color \a color. If \a color is not in the
+    map, -1 is returned.
+*/
+int QGLColormap::find(QRgb color) const
+{
+    if (d->cells)
+        return d->cells->indexOf(color);
+    return -1;
+}
+
+/*!
+    Returns the index of the color that is the closest match to color
+    \a color.
+*/
+int QGLColormap::findNearest(QRgb color) const
+{
+    int idx = find(color);
+    if (idx >= 0)
+        return idx;
+    int mapSize = size();
+    int mindist = 200000;
+    int r = qRed(color);
+    int g = qGreen(color);
+    int b = qBlue(color);
+    int rx, gx, bx, dist;
+    for (int i = 0; i < mapSize; ++i) {
+        QRgb ci = d->cells->at(i);
+        rx = r - qRed(ci);
+        gx = g - qGreen(ci);
+        bx = b - qBlue(ci);
+        dist = rx * rx + gx * gx + bx * bx;        // calculate distance
+        if (dist < mindist) {                // minimal?
+            mindist = dist;
+            idx = i;
+        }
+    }
+    return idx;
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/qglcolormap.h b/src/opengl/qglcolormap.h
new file mode 100644
index 0000000000..9a4038ef1a
--- /dev/null
+++ b/src/opengl/qglcolormap.h
@@ -0,0 +1,105 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QGLCOLORMAP_H
+#define QGLCOLORMAP_H
+
+#include <QtGui/qcolor.h>
+#include <QtCore/qvector.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(OpenGL)
+
+class Q_OPENGL_EXPORT QGLColormap
+{
+public:
+    QGLColormap();
+    QGLColormap(const QGLColormap &);
+    ~QGLColormap();
+
+    QGLColormap &operator=(const QGLColormap &);
+
+    bool   isEmpty() const;
+    int    size() const;
+    void   detach();
+
+    void   setEntries(int count, const QRgb * colors, int base = 0);
+    void   setEntry(int idx, QRgb color);
+    void   setEntry(int idx, const QColor & color);
+    QRgb   entryRgb(int idx) const;
+    QColor entryColor(int idx) const;
+    int    find(QRgb color) const;
+    int    findNearest(QRgb color) const;
+
+protected:
+    Qt::HANDLE handle() { return d ? d->cmapHandle : 0; }
+    void setHandle(Qt::HANDLE ahandle) { d->cmapHandle = ahandle; }
+
+private:
+    struct QGLColormapData {
+        QBasicAtomicInt ref;
+        QVector<QRgb> *cells;
+        Qt::HANDLE cmapHandle;
+    };
+
+    QGLColormapData *d;
+    static struct QGLColormapData shared_null;
+    static void cleanup(QGLColormapData *x);
+    void detach_helper();
+
+    friend class QGLWidget;
+    friend class QGLWidgetPrivate;
+};
+
+inline void QGLColormap::detach()
+{
+    if (d->ref != 1)
+        detach_helper();
+}
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QGLCOLORMAP_H
diff --git a/src/opengl/qglextensions.cpp b/src/opengl/qglextensions.cpp
new file mode 100644
index 0000000000..731896b8bc
--- /dev/null
+++ b/src/opengl/qglextensions.cpp
@@ -0,0 +1,430 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qgl_p.h"
+
+QT_BEGIN_NAMESPACE
+
+static void *qt_gl_getProcAddress_search
+    (QGLContext *ctx, const char *name1, const char *name2,
+     const char *name3, const char *name4)
+{
+    void *addr;
+
+    addr = ctx->getProcAddress(QLatin1String(name1));
+    if (addr)
+        return addr;
+
+    addr = ctx->getProcAddress(QLatin1String(name2));
+    if (addr)
+        return addr;
+
+    addr = ctx->getProcAddress(QLatin1String(name3));
+    if (addr)
+        return addr;
+
+    if (name4)
+        return ctx->getProcAddress(QLatin1String(name4));
+
+    return 0;
+}
+
+// Search for an extension function starting with the most likely
+// function suffix first, and then trying the other variations.
+#if defined(QT_OPENGL_ES)
+#define qt_gl_getProcAddress(ctx,name) \
+    qt_gl_getProcAddress_search((ctx), name, name "OES", name "EXT", name "ARB")
+#define qt_gl_getProcAddressEXT(ctx,name) \
+    qt_gl_getProcAddress_search((ctx), name "OES", name, name "EXT", name "ARB")
+#define qt_gl_getProcAddressARB(ctx,name) \
+    qt_gl_getProcAddress_search((ctx), name "OES", name, name "ARB", name "EXT")
+#define qt_gl_getProcAddressOES(ctx,name) \
+    qt_gl_getProcAddress_search((ctx), name "OES", name, name "EXT", name "ARB")
+#else
+#define qt_gl_getProcAddress(ctx,name) \
+    qt_gl_getProcAddress_search((ctx), name, name "ARB", name "EXT", 0)
+#define qt_gl_getProcAddressEXT(ctx,name) \
+    qt_gl_getProcAddress_search((ctx), name "EXT", name, name "ARB", 0)
+#define qt_gl_getProcAddressARB(ctx,name) \
+    qt_gl_getProcAddress_search((ctx), name "ARB", name, name "EXT", 0)
+#define qt_gl_getProcAddressOES(ctx,name) \
+    qt_gl_getProcAddress_search((ctx), name "OES", name, name "EXT", name "ARB")
+#endif
+
+bool qt_resolve_framebufferobject_extensions(QGLContext *ctx)
+{
+#if defined(QT_OPENGL_ES_2)
+    static bool have_resolved = false;
+    if (have_resolved)
+        return true;
+    have_resolved = true;
+#else
+    if (glIsRenderbuffer != 0)
+        return true;
+#endif
+
+    if (ctx == 0) {
+        qWarning("QGLFramebufferObject: Unable to resolve framebuffer object extensions -"
+                 " make sure there is a current context when creating the framebuffer object.");
+        return false;
+    }
+
+
+    glBlitFramebufferEXT = (_glBlitFramebufferEXT) qt_gl_getProcAddressEXT(ctx, "glBlitFramebuffer");
+    glRenderbufferStorageMultisampleEXT =
+        (_glRenderbufferStorageMultisampleEXT) qt_gl_getProcAddressEXT(ctx, "glRenderbufferStorageMultisample");
+
+#if !defined(QT_OPENGL_ES_2)
+    glIsRenderbuffer = (_glIsRenderbuffer) qt_gl_getProcAddressEXT(ctx, "glIsRenderbuffer");
+    if (!glIsRenderbuffer)
+        return false;   // Not much point searching for anything else.
+    glBindRenderbuffer = (_glBindRenderbuffer) qt_gl_getProcAddressEXT(ctx, "glBindRenderbuffer");
+    glDeleteRenderbuffers = (_glDeleteRenderbuffers) qt_gl_getProcAddressEXT(ctx, "glDeleteRenderbuffers");
+    glGenRenderbuffers = (_glGenRenderbuffers) qt_gl_getProcAddressEXT(ctx, "glGenRenderbuffers");
+    glRenderbufferStorage = (_glRenderbufferStorage) qt_gl_getProcAddressEXT(ctx, "glRenderbufferStorage");
+    glGetRenderbufferParameteriv =
+        (_glGetRenderbufferParameteriv) qt_gl_getProcAddressEXT(ctx, "glGetRenderbufferParameteriv");
+    glIsFramebuffer = (_glIsFramebuffer) qt_gl_getProcAddressEXT(ctx, "glIsFramebuffer");
+    glBindFramebuffer = (_glBindFramebuffer) qt_gl_getProcAddressEXT(ctx, "glBindFramebuffer");
+    glDeleteFramebuffers = (_glDeleteFramebuffers) qt_gl_getProcAddressEXT(ctx, "glDeleteFramebuffers");
+    glGenFramebuffers = (_glGenFramebuffers) qt_gl_getProcAddressEXT(ctx, "glGenFramebuffers");
+    glCheckFramebufferStatus = (_glCheckFramebufferStatus) qt_gl_getProcAddressEXT(ctx, "glCheckFramebufferStatus");
+    glFramebufferTexture2D = (_glFramebufferTexture2D) qt_gl_getProcAddressEXT(ctx, "glFramebufferTexture2D");
+    glFramebufferRenderbuffer = (_glFramebufferRenderbuffer) qt_gl_getProcAddressEXT(ctx, "glFramebufferRenderbuffer");
+    glGetFramebufferAttachmentParameteriv =
+        (_glGetFramebufferAttachmentParameteriv) qt_gl_getProcAddressEXT(ctx, "glGetFramebufferAttachmentParameteriv");
+    glGenerateMipmap = (_glGenerateMipmap) qt_gl_getProcAddressEXT(ctx, "glGenerateMipmap");
+
+    return glIsRenderbuffer != 0;
+#else
+    return true;
+#endif
+}
+
+#if !defined(QT_OPENGL_ES_2)
+bool qt_resolve_version_1_3_functions(QGLContext *ctx)
+{
+    if (glMultiTexCoord4f != 0)
+        return true;
+
+    QGLContext cx(QGLFormat::defaultFormat());
+    glMultiTexCoord4f = (_glMultiTexCoord4f) ctx->getProcAddress(QLatin1String("glMultiTexCoord4f"));
+
+    glActiveTexture = (_glActiveTexture) ctx->getProcAddress(QLatin1String("glActiveTexture"));
+    return glMultiTexCoord4f && glActiveTexture;
+}
+#endif
+
+#if !defined(QT_OPENGL_ES_2)
+bool qt_resolve_stencil_face_extension(QGLContext *ctx)
+{
+    if (glActiveStencilFaceEXT != 0)
+        return true;
+
+    QGLContext cx(QGLFormat::defaultFormat());
+    glActiveStencilFaceEXT = (_glActiveStencilFaceEXT) ctx->getProcAddress(QLatin1String("glActiveStencilFaceEXT"));
+
+    return glActiveStencilFaceEXT;
+}
+#endif
+
+
+#if !defined(QT_OPENGL_ES_2)
+bool qt_resolve_frag_program_extensions(QGLContext *ctx)
+{
+    if (glProgramStringARB != 0)
+        return true;
+
+    // ARB_fragment_program
+    glProgramStringARB = (_glProgramStringARB) ctx->getProcAddress(QLatin1String("glProgramStringARB"));
+    glBindProgramARB = (_glBindProgramARB) ctx->getProcAddress(QLatin1String("glBindProgramARB"));
+    glDeleteProgramsARB = (_glDeleteProgramsARB) ctx->getProcAddress(QLatin1String("glDeleteProgramsARB"));
+    glGenProgramsARB = (_glGenProgramsARB) ctx->getProcAddress(QLatin1String("glGenProgramsARB"));
+    glProgramLocalParameter4fvARB = (_glProgramLocalParameter4fvARB) ctx->getProcAddress(QLatin1String("glProgramLocalParameter4fvARB"));
+
+    return glProgramStringARB
+        && glBindProgramARB
+        && glDeleteProgramsARB
+        && glGenProgramsARB
+        && glProgramLocalParameter4fvARB;
+}
+#endif
+
+
+bool qt_resolve_buffer_extensions(QGLContext *ctx)
+{
+#if defined(QGL_RESOLVE_BUFFER_FUNCS)
+    if (glBindBuffer && glDeleteBuffers && glGenBuffers && glBufferData
+            && glBufferSubData && glGetBufferParameteriv)
+        return true;
+#endif
+
+#if defined(QGL_RESOLVE_BUFFER_FUNCS)
+    glBindBuffer = (_glBindBuffer) qt_gl_getProcAddressARB(ctx, "glBindBuffer");
+    glDeleteBuffers = (_glDeleteBuffers) qt_gl_getProcAddressARB(ctx, "glDeleteBuffers");
+    glGenBuffers = (_glGenBuffers) qt_gl_getProcAddressARB(ctx, "glGenBuffers");
+    glBufferData = (_glBufferData) qt_gl_getProcAddressARB(ctx, "glBufferData");
+    glBufferSubData = (_glBufferSubData) qt_gl_getProcAddressARB(ctx, "glBufferSubData");
+    glGetBufferSubData = (_glGetBufferSubData) qt_gl_getProcAddressARB(ctx, "glGetBufferSubData");
+    glGetBufferParameteriv = (_glGetBufferParameteriv) qt_gl_getProcAddressARB(ctx, "glGetBufferParameteriv");
+#endif
+    glMapBufferARB = (_glMapBufferARB) qt_gl_getProcAddressARB(ctx, "glMapBuffer");
+    glUnmapBufferARB = (_glUnmapBufferARB) qt_gl_getProcAddressARB(ctx, "glUnmapBuffer");
+
+#if defined(QGL_RESOLVE_BUFFER_FUNCS)
+    return glBindBuffer
+        && glDeleteBuffers
+        && glGenBuffers
+        && glBufferData
+        && glBufferSubData
+        && glGetBufferParameteriv;
+        // glGetBufferSubData() is optional
+#else
+    return true;
+#endif
+}
+
+#ifndef QT_NO_EGL
+bool qt_resolve_eglimage_gl_extensions(QGLContext *ctx)
+{
+    if (glEGLImageTargetTexture2DOES || glEGLImageTargetRenderbufferStorageOES)
+        return true;
+    glEGLImageTargetTexture2DOES = (_glEGLImageTargetTexture2DOES) ctx->getProcAddress(QLatin1String("glEGLImageTargetTexture2DOES"));
+    glEGLImageTargetRenderbufferStorageOES = (_glEGLImageTargetRenderbufferStorageOES) ctx->getProcAddress(QLatin1String("glEGLImageTargetRenderbufferStorageOES"));
+    return glEGLImageTargetTexture2DOES && glEGLImageTargetRenderbufferStorageOES;
+}
+#endif
+
+bool qt_resolve_glsl_extensions(QGLContext *ctx)
+{
+
+#if defined(QT_OPENGL_ES_2)
+    // The GLSL shader functions are always present in OpenGL/ES 2.0.
+    // The only exceptions are glGetProgramBinaryOES and glProgramBinaryOES.
+    if (!QGLContextPrivate::extensionFuncs(ctx).qt_glslResolved) {
+        glGetProgramBinaryOES = (_glGetProgramBinaryOES) ctx->getProcAddress(QLatin1String("glGetProgramBinaryOES"));
+        glProgramBinaryOES = (_glProgramBinaryOES) ctx->getProcAddress(QLatin1String("glProgramBinaryOES"));
+        QGLContextPrivate::extensionFuncs(ctx).qt_glslResolved = true;
+    }
+    return true;
+#else
+    if (glCreateShader)
+        return true;
+
+    // Geometry shaders are optional...
+    glProgramParameteriEXT = (_glProgramParameteriEXT) ctx->getProcAddress(QLatin1String("glProgramParameteriEXT"));
+    glFramebufferTextureEXT = (_glFramebufferTextureEXT) ctx->getProcAddress(QLatin1String("glFramebufferTextureEXT"));
+    glFramebufferTextureLayerEXT = (_glFramebufferTextureLayerEXT) ctx->getProcAddress(QLatin1String("glFramebufferTextureLayerEXT"));
+    glFramebufferTextureFaceEXT = (_glFramebufferTextureFaceEXT) ctx->getProcAddress(QLatin1String("glFramebufferTextureFaceEXT"));
+
+    // Must at least have the FragmentShader extension to continue.
+    if (!(QGLExtensions::glExtensions() & QGLExtensions::FragmentShader))
+        return false;
+
+    glCreateShader = (_glCreateShader) ctx->getProcAddress(QLatin1String("glCreateShader"));
+    if (glCreateShader) {
+        glShaderSource = (_glShaderSource) ctx->getProcAddress(QLatin1String("glShaderSource"));
+        glShaderBinary = (_glShaderBinary) ctx->getProcAddress(QLatin1String("glShaderBinary"));
+        glCompileShader = (_glCompileShader) ctx->getProcAddress(QLatin1String("glCompileShader"));
+        glDeleteShader = (_glDeleteShader) ctx->getProcAddress(QLatin1String("glDeleteShader"));
+        glIsShader = (_glIsShader) ctx->getProcAddress(QLatin1String("glIsShader"));
+
+        glCreateProgram = (_glCreateProgram) ctx->getProcAddress(QLatin1String("glCreateProgram"));
+        glAttachShader = (_glAttachShader) ctx->getProcAddress(QLatin1String("glAttachShader"));
+        glDetachShader = (_glDetachShader) ctx->getProcAddress(QLatin1String("glDetachShader"));
+        glLinkProgram = (_glLinkProgram) ctx->getProcAddress(QLatin1String("glLinkProgram"));
+        glUseProgram = (_glUseProgram) ctx->getProcAddress(QLatin1String("glUseProgram"));
+        glDeleteProgram = (_glDeleteProgram) ctx->getProcAddress(QLatin1String("glDeleteProgram"));
+        glIsProgram = (_glIsProgram) ctx->getProcAddress(QLatin1String("glIsProgram"));
+
+        glGetShaderInfoLog = (_glGetShaderInfoLog) ctx->getProcAddress(QLatin1String("glGetShaderInfoLog"));
+        glGetShaderiv = (_glGetShaderiv) ctx->getProcAddress(QLatin1String("glGetShaderiv"));
+        glGetShaderSource = (_glGetShaderSource) ctx->getProcAddress(QLatin1String("glGetShaderSource"));
+        glGetProgramiv = (_glGetProgramiv) ctx->getProcAddress(QLatin1String("glGetProgramiv"));
+        glGetProgramInfoLog = (_glGetProgramInfoLog) ctx->getProcAddress(QLatin1String("glGetProgramInfoLog"));
+
+        glGetUniformLocation = (_glGetUniformLocation) ctx->getProcAddress(QLatin1String("glGetUniformLocation"));
+        glUniform4fv = (_glUniform4fv) ctx->getProcAddress(QLatin1String("glUniform4fv"));
+        glUniform3fv = (_glUniform3fv) ctx->getProcAddress(QLatin1String("glUniform3fv"));
+        glUniform2fv = (_glUniform2fv) ctx->getProcAddress(QLatin1String("glUniform2fv"));
+        glUniform1fv = (_glUniform1fv) ctx->getProcAddress(QLatin1String("glUniform1fv"));
+        glUniform1i = (_glUniform1i) ctx->getProcAddress(QLatin1String("glUniform1i"));
+        glUniform1iv = (_glUniform1iv) ctx->getProcAddress(QLatin1String("glUniform1iv"));
+        glUniformMatrix2fv = (_glUniformMatrix2fv) ctx->getProcAddress(QLatin1String("glUniformMatrix2fv"));
+        glUniformMatrix3fv = (_glUniformMatrix3fv) ctx->getProcAddress(QLatin1String("glUniformMatrix3fv"));
+        glUniformMatrix4fv = (_glUniformMatrix4fv) ctx->getProcAddress(QLatin1String("glUniformMatrix4fv"));
+        glUniformMatrix2x3fv = (_glUniformMatrix2x3fv) ctx->getProcAddress(QLatin1String("glUniformMatrix2x3fv"));
+        glUniformMatrix2x4fv = (_glUniformMatrix2x4fv) ctx->getProcAddress(QLatin1String("glUniformMatrix2x4fv"));
+        glUniformMatrix3x2fv = (_glUniformMatrix3x2fv) ctx->getProcAddress(QLatin1String("glUniformMatrix3x2fv"));
+        glUniformMatrix3x4fv = (_glUniformMatrix3x4fv) ctx->getProcAddress(QLatin1String("glUniformMatrix3x4fv"));
+        glUniformMatrix4x2fv = (_glUniformMatrix4x2fv) ctx->getProcAddress(QLatin1String("glUniformMatrix4x2fv"));
+        glUniformMatrix4x3fv = (_glUniformMatrix4x3fv) ctx->getProcAddress(QLatin1String("glUniformMatrix4x3fv"));
+
+        glBindAttribLocation = (_glBindAttribLocation) ctx->getProcAddress(QLatin1String("glBindAttribLocation"));
+        glGetAttribLocation = (_glGetAttribLocation) ctx->getProcAddress(QLatin1String("glGetAttribLocation"));
+        glVertexAttrib1fv = (_glVertexAttrib1fv) ctx->getProcAddress(QLatin1String("glVertexAttrib1fv"));
+        glVertexAttrib2fv = (_glVertexAttrib2fv) ctx->getProcAddress(QLatin1String("glVertexAttrib2fv"));
+        glVertexAttrib3fv = (_glVertexAttrib3fv) ctx->getProcAddress(QLatin1String("glVertexAttrib3fv"));
+        glVertexAttrib4fv = (_glVertexAttrib4fv) ctx->getProcAddress(QLatin1String("glVertexAttrib4fv"));
+        glVertexAttribPointer = (_glVertexAttribPointer) ctx->getProcAddress(QLatin1String("glVertexAttribPointer"));
+        glDisableVertexAttribArray = (_glDisableVertexAttribArray) ctx->getProcAddress(QLatin1String("glDisableVertexAttribArray"));
+        glEnableVertexAttribArray = (_glEnableVertexAttribArray) ctx->getProcAddress(QLatin1String("glEnableVertexAttribArray"));
+
+    } else {
+        // We may not have the standard shader functions, but we might
+        // have the older ARB functions instead.
+        glCreateShader = (_glCreateShader) ctx->getProcAddress(QLatin1String("glCreateShaderObjectARB"));
+        glShaderSource = (_glShaderSource) ctx->getProcAddress(QLatin1String("glShaderSourceARB"));
+        glShaderBinary = (_glShaderBinary) ctx->getProcAddress(QLatin1String("glShaderBinaryARB"));
+        glCompileShader = (_glCompileShader) ctx->getProcAddress(QLatin1String("glCompileShaderARB"));
+        glDeleteShader = (_glDeleteShader) ctx->getProcAddress(QLatin1String("glDeleteObjectARB"));
+        glIsShader = 0;
+
+        glCreateProgram = (_glCreateProgram) ctx->getProcAddress(QLatin1String("glCreateProgramObjectARB"));
+        glAttachShader = (_glAttachShader) ctx->getProcAddress(QLatin1String("glAttachObjectARB"));
+        glDetachShader = (_glDetachShader) ctx->getProcAddress(QLatin1String("glDetachObjectARB"));
+        glLinkProgram = (_glLinkProgram) ctx->getProcAddress(QLatin1String("glLinkProgramARB"));
+        glUseProgram = (_glUseProgram) ctx->getProcAddress(QLatin1String("glUseProgramObjectARB"));
+        glDeleteProgram = (_glDeleteProgram) ctx->getProcAddress(QLatin1String("glDeleteObjectARB"));
+        glIsProgram = 0;
+
+        glGetShaderInfoLog = (_glGetShaderInfoLog) ctx->getProcAddress(QLatin1String("glGetInfoLogARB"));
+        glGetShaderiv = (_glGetShaderiv) ctx->getProcAddress(QLatin1String("glGetObjectParameterivARB"));
+        glGetShaderSource = (_glGetShaderSource) ctx->getProcAddress(QLatin1String("glGetShaderSourceARB"));
+        glGetProgramiv = (_glGetProgramiv) ctx->getProcAddress(QLatin1String("glGetObjectParameterivARB"));
+        glGetProgramInfoLog = (_glGetProgramInfoLog) ctx->getProcAddress(QLatin1String("glGetInfoLogARB"));
+
+        glGetUniformLocation = (_glGetUniformLocation) ctx->getProcAddress(QLatin1String("glGetUniformLocationARB"));
+        glUniform4fv = (_glUniform4fv) ctx->getProcAddress(QLatin1String("glUniform4fvARB"));
+        glUniform3fv = (_glUniform3fv) ctx->getProcAddress(QLatin1String("glUniform3fvARB"));
+        glUniform2fv = (_glUniform2fv) ctx->getProcAddress(QLatin1String("glUniform2fvARB"));
+        glUniform1fv = (_glUniform1fv) ctx->getProcAddress(QLatin1String("glUniform1fvARB"));
+        glUniform1i = (_glUniform1i) ctx->getProcAddress(QLatin1String("glUniform1iARB"));
+        glUniform1iv = (_glUniform1iv) ctx->getProcAddress(QLatin1String("glUniform1ivARB"));
+        glUniformMatrix2fv = (_glUniformMatrix2fv) ctx->getProcAddress(QLatin1String("glUniformMatrix2fvARB"));
+        glUniformMatrix3fv = (_glUniformMatrix3fv) ctx->getProcAddress(QLatin1String("glUniformMatrix3fvARB"));
+        glUniformMatrix4fv = (_glUniformMatrix4fv) ctx->getProcAddress(QLatin1String("glUniformMatrix4fvARB"));
+        glUniformMatrix2x3fv = (_glUniformMatrix2x3fv) ctx->getProcAddress(QLatin1String("glUniformMatrix2x3fvARB"));
+        glUniformMatrix2x4fv = (_glUniformMatrix2x4fv) ctx->getProcAddress(QLatin1String("glUniformMatrix2x4fvARB"));
+        glUniformMatrix3x2fv = (_glUniformMatrix3x2fv) ctx->getProcAddress(QLatin1String("glUniformMatrix3x2fvARB"));
+        glUniformMatrix3x4fv = (_glUniformMatrix3x4fv) ctx->getProcAddress(QLatin1String("glUniformMatrix3x4fvARB"));
+        glUniformMatrix4x2fv = (_glUniformMatrix4x2fv) ctx->getProcAddress(QLatin1String("glUniformMatrix4x2fvARB"));
+        glUniformMatrix4x3fv = (_glUniformMatrix4x3fv) ctx->getProcAddress(QLatin1String("glUniformMatrix4x3fvARB"));
+
+        glBindAttribLocation = (_glBindAttribLocation) ctx->getProcAddress(QLatin1String("glBindAttribLocationARB"));
+        glGetAttribLocation = (_glGetAttribLocation) ctx->getProcAddress(QLatin1String("glGetAttribLocationARB"));
+        glVertexAttrib1fv = (_glVertexAttrib1fv) ctx->getProcAddress(QLatin1String("glVertexAttrib1fvARB"));
+        glVertexAttrib2fv = (_glVertexAttrib2fv) ctx->getProcAddress(QLatin1String("glVertexAttrib2fvARB"));
+        glVertexAttrib3fv = (_glVertexAttrib3fv) ctx->getProcAddress(QLatin1String("glVertexAttrib3fvARB"));
+        glVertexAttrib4fv = (_glVertexAttrib4fv) ctx->getProcAddress(QLatin1String("glVertexAttrib4fvARB"));
+        glVertexAttribPointer = (_glVertexAttribPointer) ctx->getProcAddress(QLatin1String("glVertexAttribPointerARB"));
+        glDisableVertexAttribArray = (_glDisableVertexAttribArray) ctx->getProcAddress(QLatin1String("glDisableVertexAttribArrayARB"));
+        glEnableVertexAttribArray = (_glEnableVertexAttribArray) ctx->getProcAddress(QLatin1String("glEnableVertexAttribArrayARB"));
+    }
+
+    // Note: glShaderBinary(), glIsShader(), glIsProgram(), and
+    // glUniformMatrixNxMfv() are optional, but all other functions
+    // are required.
+
+    return glCreateShader &&
+        glShaderSource &&
+        glCompileShader &&
+        glDeleteProgram &&
+        glCreateProgram &&
+        glAttachShader &&
+        glDetachShader &&
+        glLinkProgram &&
+        glUseProgram &&
+        glDeleteProgram &&
+        glGetShaderInfoLog &&
+        glGetShaderiv &&
+        glGetShaderSource &&
+        glGetProgramiv &&
+        glGetProgramInfoLog &&
+        glGetUniformLocation &&
+        glUniform1fv &&
+        glUniform2fv &&
+        glUniform3fv &&
+        glUniform4fv &&
+        glUniform1i &&
+        glUniform1iv &&
+        glUniformMatrix2fv &&
+        glUniformMatrix3fv &&
+        glUniformMatrix4fv &&
+        glBindAttribLocation &&
+        glGetAttribLocation &&
+        glVertexAttrib1fv &&
+        glVertexAttrib2fv &&
+        glVertexAttrib3fv &&
+        glVertexAttrib4fv &&
+        glVertexAttribPointer &&
+        glDisableVertexAttribArray &&
+        glEnableVertexAttribArray;
+#endif
+}
+
+#if !defined(QT_OPENGL_ES_2)
+bool qt_resolve_version_2_0_functions(QGLContext *ctx)
+{
+    bool gl2supported = true;
+    if (!qt_resolve_glsl_extensions(ctx))
+        gl2supported = false;
+
+    if (!qt_resolve_version_1_3_functions(ctx))
+        gl2supported = false;
+
+    if (!qt_resolve_framebufferobject_extensions(ctx))
+        gl2supported = false;
+
+    if (glStencilOpSeparate)
+        return gl2supported;
+
+    glBlendColor = (_glBlendColor) ctx->getProcAddress(QLatin1String("glBlendColor"));
+    glStencilOpSeparate = (_glStencilOpSeparate) ctx->getProcAddress(QLatin1String("glStencilOpSeparate"));
+    if (!glBlendColor || !glStencilOpSeparate)
+        gl2supported = false;
+
+    return gl2supported;
+}
+#endif
+
+
+QT_END_NAMESPACE
diff --git a/src/opengl/qglextensions_p.h b/src/opengl/qglextensions_p.h
new file mode 100644
index 0000000000..529c7a1b4e
--- /dev/null
+++ b/src/opengl/qglextensions_p.h
@@ -0,0 +1,897 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QGL_EXTENSIONS_P_H
+#define QGL_EXTENSIONS_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of the Qt OpenGL classes.  This header file may change from
+// version to version without notice, or even be removed.
+//
+// We mean it.
+//
+
+// extension prototypes
+#ifndef Q_WS_MAC
+# ifndef APIENTRYP
+#   ifdef APIENTRY
+#     define APIENTRYP APIENTRY *
+#   else
+#     define APIENTRY
+#     define APIENTRYP *
+#   endif
+# endif
+#else
+# define APIENTRY
+# define APIENTRYP *
+#endif
+
+#ifndef QT_NO_EGL
+// Needed for EGLImageKHR definition:
+#include <QtGui/private/qegl_p.h>
+#endif
+
+#include <QtCore/qglobal.h>
+
+#ifndef GL_ARB_vertex_buffer_object
+typedef ptrdiff_t GLintptrARB;
+typedef ptrdiff_t GLsizeiptrARB;
+#endif
+
+#ifndef GL_VERSION_2_0
+typedef char GLchar;
+#endif
+
+// ARB_vertex_buffer_object
+typedef void (APIENTRY *_glBindBuffer) (GLenum, GLuint);
+typedef void (APIENTRY *_glDeleteBuffers) (GLsizei, const GLuint *);
+typedef void (APIENTRY *_glGenBuffers) (GLsizei, GLuint *);
+typedef void (APIENTRY *_glBufferData) (GLenum, GLsizeiptrARB, const GLvoid *, GLenum);
+typedef void (APIENTRY *_glBufferSubData) (GLenum, GLintptrARB, GLsizeiptrARB, const GLvoid *);
+typedef void (APIENTRY *_glGetBufferSubData) (GLenum, GLintptrARB, GLsizeiptrARB, GLvoid *);
+typedef void (APIENTRY *_glGetBufferParameteriv) (GLenum, GLenum, GLint *);
+typedef GLvoid* (APIENTRY *_glMapBufferARB) (GLenum, GLenum);
+typedef GLboolean (APIENTRY *_glUnmapBufferARB) (GLenum);
+// We can call the buffer functions directly in OpenGL/ES 1.1 or higher,
+// but all other platforms need to resolve the extensions.
+#if defined(QT_OPENGL_ES)
+#if defined(GL_OES_VERSION_1_0) && !defined(GL_OES_VERSION_1_1)
+#define QGL_RESOLVE_BUFFER_FUNCS 1
+#endif
+#else
+#define QGL_RESOLVE_BUFFER_FUNCS 1
+#endif
+
+// ARB_fragment_program
+typedef void (APIENTRY *_glProgramStringARB) (GLenum, GLenum, GLsizei, const GLvoid *);
+typedef void (APIENTRY *_glBindProgramARB) (GLenum, GLuint);
+typedef void (APIENTRY *_glDeleteProgramsARB) (GLsizei, const GLuint *);
+typedef void (APIENTRY *_glGenProgramsARB) (GLsizei, GLuint *);
+typedef void (APIENTRY *_glProgramLocalParameter4fvARB) (GLenum, GLuint, const GLfloat *);
+
+// GLSL
+typedef GLuint (APIENTRY *_glCreateShader) (GLenum);
+typedef void (APIENTRY *_glShaderSource) (GLuint, GLsizei, const char **, const GLint *);
+typedef void (APIENTRY *_glShaderBinary) (GLint, const GLuint*, GLenum, const void*, GLint);
+typedef void (APIENTRY *_glCompileShader) (GLuint);
+typedef void (APIENTRY *_glDeleteShader) (GLuint);
+typedef GLboolean (APIENTRY *_glIsShader) (GLuint);
+
+typedef GLuint (APIENTRY *_glCreateProgram) ();
+typedef void (APIENTRY *_glAttachShader) (GLuint, GLuint);
+typedef void (APIENTRY *_glDetachShader) (GLuint, GLuint);
+typedef void (APIENTRY *_glLinkProgram) (GLuint);
+typedef void (APIENTRY *_glUseProgram) (GLuint);
+typedef void (APIENTRY *_glDeleteProgram) (GLuint);
+typedef GLboolean (APIENTRY *_glIsProgram) (GLuint);
+
+typedef void (APIENTRY *_glGetShaderInfoLog) (GLuint, GLsizei, GLsizei *, char *);
+typedef void (APIENTRY *_glGetShaderiv) (GLuint, GLenum, GLint *);
+typedef void (APIENTRY *_glGetShaderSource) (GLuint, GLsizei, GLsizei *, char *);
+typedef void (APIENTRY *_glGetProgramiv) (GLuint, GLenum, GLint *);
+typedef void (APIENTRY *_glGetProgramInfoLog) (GLuint, GLsizei, GLsizei *, char *);
+
+typedef GLuint (APIENTRY *_glGetUniformLocation) (GLuint, const char*);
+typedef void (APIENTRY *_glUniform4fv) (GLint, GLsizei, const GLfloat *);
+typedef void (APIENTRY *_glUniform3fv) (GLint, GLsizei, const GLfloat *);
+typedef void (APIENTRY *_glUniform2fv) (GLint, GLsizei, const GLfloat *);
+typedef void (APIENTRY *_glUniform1fv) (GLint, GLsizei, const GLfloat *);
+typedef void (APIENTRY *_glUniform1i) (GLint, GLint);
+typedef void (APIENTRY *_glUniform1iv) (GLint, GLsizei, const GLint *);
+typedef void (APIENTRY *_glUniformMatrix2fv) (GLint, GLsizei, GLboolean, const GLfloat *);
+typedef void (APIENTRY *_glUniformMatrix3fv) (GLint, GLsizei, GLboolean, const GLfloat *);
+typedef void (APIENTRY *_glUniformMatrix4fv) (GLint, GLsizei, GLboolean, const GLfloat *);
+typedef void (APIENTRY *_glUniformMatrix2x3fv) (GLint, GLsizei, GLboolean, const GLfloat *);
+typedef void (APIENTRY *_glUniformMatrix2x4fv) (GLint, GLsizei, GLboolean, const GLfloat *);
+typedef void (APIENTRY *_glUniformMatrix3x2fv) (GLint, GLsizei, GLboolean, const GLfloat *);
+typedef void (APIENTRY *_glUniformMatrix3x4fv) (GLint, GLsizei, GLboolean, const GLfloat *);
+typedef void (APIENTRY *_glUniformMatrix4x2fv) (GLint, GLsizei, GLboolean, const GLfloat *);
+typedef void (APIENTRY *_glUniformMatrix4x3fv) (GLint, GLsizei, GLboolean, const GLfloat *);
+
+typedef void (APIENTRY *_glBindAttribLocation) (GLuint, GLuint, const char *);
+typedef GLint (APIENTRY *_glGetAttribLocation) (GLuint, const char *);
+typedef void (APIENTRY *_glVertexAttrib1fv) (GLuint, const GLfloat *);
+typedef void (APIENTRY *_glVertexAttrib2fv) (GLuint, const GLfloat *);
+typedef void (APIENTRY *_glVertexAttrib3fv) (GLuint, const GLfloat *);
+typedef void (APIENTRY *_glVertexAttrib4fv) (GLuint, const GLfloat *);
+typedef void (APIENTRY *_glVertexAttribPointer) (GLuint, GLint, GLenum, GLboolean, GLsizei, const GLvoid *);
+typedef void (APIENTRY *_glDisableVertexAttribArray) (GLuint);
+typedef void (APIENTRY *_glEnableVertexAttribArray) (GLuint);
+
+typedef void (APIENTRY *_glGetProgramBinaryOES) (GLuint, GLsizei, GLsizei *, GLenum *, void *);
+typedef void (APIENTRY *_glProgramBinaryOES) (GLuint, GLenum, const void *, GLint);
+
+
+typedef void (APIENTRY *_glMultiTexCoord4f) (GLenum, GLfloat, GLfloat, GLfloat, GLfloat);
+typedef void (APIENTRY *_glActiveStencilFaceEXT) (GLenum );
+
+// Needed for GL2 engine:
+typedef void (APIENTRY *_glStencilOpSeparate) (GLenum face, GLenum sfail, GLenum dpfail, GLenum dppass);
+typedef void (APIENTRY *_glActiveTexture) (GLenum);
+typedef void (APIENTRY *_glBlendColor) (GLclampf, GLclampf, GLclampf, GLclampf);
+
+
+// EXT_GL_framebuffer_object
+typedef GLboolean (APIENTRY *_glIsRenderbuffer) (GLuint renderbuffer);
+typedef void (APIENTRY *_glBindRenderbuffer) (GLenum target, GLuint renderbuffer);
+typedef void (APIENTRY *_glDeleteRenderbuffers) (GLsizei n, const GLuint *renderbuffers);
+typedef void (APIENTRY *_glGenRenderbuffers) (GLsizei n, GLuint *renderbuffers);
+typedef void (APIENTRY *_glRenderbufferStorage) (GLenum target, GLenum internalformat, GLsizei width, GLsizei height);
+typedef void (APIENTRY *_glGetRenderbufferParameteriv) (GLenum target, GLenum pname, GLint *params);
+typedef GLboolean (APIENTRY *_glIsFramebuffer) (GLuint framebuffer);
+typedef void (APIENTRY *_glBindFramebuffer) (GLenum target, GLuint framebuffer);
+typedef void (APIENTRY *_glDeleteFramebuffers) (GLsizei n, const GLuint *framebuffers);
+typedef void (APIENTRY *_glGenFramebuffers) (GLsizei n, GLuint *framebuffers);
+typedef GLenum (APIENTRY *_glCheckFramebufferStatus) (GLenum target);
+typedef void (APIENTRY *_glFramebufferTexture2D) (GLenum target, GLenum attachment, GLenum textarget,
+                                                           GLuint texture, GLint level);
+typedef void (APIENTRY *_glFramebufferRenderbuffer) (GLenum target, GLenum attachment, GLenum renderbuffertarget,
+                                                              GLuint renderbuffer);
+typedef void (APIENTRY *_glGetFramebufferAttachmentParameteriv) (GLenum target, GLenum attachment, GLenum pname,
+                                                                          GLint *params);
+typedef void (APIENTRY *_glGenerateMipmap) (GLenum target);
+
+// EXT_GL_framebuffer_blit
+typedef void (APIENTRY *_glBlitFramebufferEXT) (int srcX0, int srcY0, int srcX1, int srcY1,
+                                                int dstX0, int dstY0, int dstX1, int dstY1,
+                                                GLbitfield mask, GLenum filter);
+
+// EXT_GL_framebuffer_multisample
+typedef void (APIENTRY *_glRenderbufferStorageMultisampleEXT) (GLenum target, GLsizei samples,
+                                                               GLenum internalformat, GLsizei width, GLsizei height);
+
+// GL_EXT_geometry_shader4
+typedef void (APIENTRY *_glProgramParameteriEXT)(GLuint program, GLenum pname, GLint value);
+typedef void (APIENTRY *_glFramebufferTextureEXT)(GLenum target, GLenum attachment,
+                                                  GLuint texture, GLint level);
+typedef void (APIENTRY *_glFramebufferTextureLayerEXT)(GLenum target, GLenum attachment,
+                                                       GLuint texture, GLint level, GLint layer);
+typedef void (APIENTRY *_glFramebufferTextureFaceEXT)(GLenum target, GLenum attachment,
+                                                      GLuint texture, GLint level, GLenum face);
+
+// ARB_texture_compression
+typedef void (APIENTRY *_glCompressedTexImage2DARB) (GLenum, GLint, GLenum, GLsizei,
+                                                     GLsizei, GLint, GLsizei, const GLvoid *);
+
+#ifndef QT_NO_EGL
+// OES_EGL_image
+// Note: We define these to take EGLImage whereas spec says they take a new GLeglImageOES
+//       type, which the EGL image should be cast to.
+typedef void (APIENTRY *_glEGLImageTargetTexture2DOES) (GLenum, EGLImageKHR);
+typedef void (APIENTRY *_glEGLImageTargetRenderbufferStorageOES) (GLenum, EGLImageKHR);
+#endif
+
+QT_BEGIN_NAMESPACE
+
+struct QGLExtensionFuncs
+{
+    QGLExtensionFuncs() {
+#if !defined(QT_OPENGL_ES_2)
+        qt_glProgramStringARB = 0;
+        qt_glBindProgramARB = 0;
+        qt_glDeleteProgramsARB = 0;
+        qt_glGenProgramsARB = 0;
+        qt_glProgramLocalParameter4fvARB = 0;
+
+        // GLSL
+        qt_glCreateShader = 0;
+        qt_glShaderSource = 0;
+        qt_glShaderBinary = 0;
+        qt_glCompileShader = 0;
+        qt_glDeleteShader = 0;
+        qt_glIsShader = 0;
+
+        qt_glCreateProgram = 0;
+        qt_glAttachShader = 0;
+        qt_glDetachShader = 0;
+        qt_glLinkProgram = 0;
+        qt_glUseProgram = 0;
+        qt_glDeleteProgram = 0;
+        qt_glIsProgram = 0;
+
+        qt_glGetShaderInfoLog = 0;
+        qt_glGetShaderiv = 0;
+        qt_glGetShaderSource = 0;
+        qt_glGetProgramiv = 0;
+        qt_glGetProgramInfoLog = 0;
+
+        qt_glGetUniformLocation = 0;
+        qt_glUniform4fv = 0;
+        qt_glUniform3fv = 0;
+        qt_glUniform2fv = 0;
+        qt_glUniform1fv = 0;
+        qt_glUniform1i = 0;
+        qt_glUniform1iv = 0;
+        qt_glUniformMatrix2fv = 0;
+        qt_glUniformMatrix3fv = 0;
+        qt_glUniformMatrix4fv = 0;
+        qt_glUniformMatrix2x3fv = 0;
+        qt_glUniformMatrix2x4fv = 0;
+        qt_glUniformMatrix3x2fv = 0;
+        qt_glUniformMatrix3x4fv = 0;
+        qt_glUniformMatrix4x2fv = 0;
+        qt_glUniformMatrix4x3fv = 0;
+
+        qt_glBindAttribLocation = 0;
+        qt_glGetAttribLocation = 0;
+        qt_glVertexAttrib1fv = 0;
+        qt_glVertexAttrib2fv = 0;
+        qt_glVertexAttrib3fv = 0;
+        qt_glVertexAttrib4fv = 0;
+        qt_glVertexAttribPointer = 0;
+        qt_glDisableVertexAttribArray = 0;
+        qt_glEnableVertexAttribArray = 0;
+
+        // Extras for GL2 engine:
+        qt_glActiveTexture = 0;
+        qt_glStencilOpSeparate = 0;
+        qt_glBlendColor = 0;
+
+        qt_glActiveStencilFaceEXT = 0;
+        qt_glMultiTexCoord4f = 0;
+#else
+        qt_glslResolved = false;
+
+        qt_glGetProgramBinaryOES = 0;
+        qt_glProgramBinaryOES = 0;
+#endif
+
+        // FBOs
+#if !defined(QT_OPENGL_ES_2)
+        qt_glIsRenderbuffer = 0;
+        qt_glBindRenderbuffer = 0;
+        qt_glDeleteRenderbuffers = 0;
+        qt_glGenRenderbuffers = 0;
+        qt_glRenderbufferStorage = 0;
+        qt_glGetRenderbufferParameteriv = 0;
+        qt_glIsFramebuffer = 0;
+        qt_glBindFramebuffer = 0;
+        qt_glDeleteFramebuffers = 0;
+        qt_glGenFramebuffers = 0;
+        qt_glCheckFramebufferStatus = 0;
+        qt_glFramebufferTexture2D = 0;
+        qt_glFramebufferRenderbuffer = 0;
+        qt_glGetFramebufferAttachmentParameteriv = 0;
+        qt_glGenerateMipmap = 0;
+#endif
+        qt_glBlitFramebufferEXT = 0;
+        qt_glRenderbufferStorageMultisampleEXT = 0;
+
+        // Buffer objects:
+#if defined(QGL_RESOLVE_BUFFER_FUNCS)
+        qt_glBindBuffer = 0;
+        qt_glDeleteBuffers = 0;
+        qt_glGenBuffers = 0;
+        qt_glBufferData = 0;
+        qt_glBufferSubData = 0;
+        qt_glGetBufferSubData = 0;
+        qt_glGetBufferParameteriv = 0;
+#endif
+        qt_glMapBufferARB = 0;
+        qt_glUnmapBufferARB = 0;
+
+        qt_glProgramParameteriEXT = 0;
+        qt_glFramebufferTextureEXT = 0;
+        qt_glFramebufferTextureLayerEXT = 0;
+        qt_glFramebufferTextureFaceEXT = 0;
+#if !defined(QT_OPENGL_ES)
+        // Texture compression
+        qt_glCompressedTexImage2DARB = 0;
+#endif
+
+#ifndef QT_NO_EGL
+        // OES_EGL_image
+        qt_glEGLImageTargetTexture2DOES = 0;
+        qt_glEGLImageTargetRenderbufferStorageOES = 0;
+#endif
+    }
+
+
+#if !defined(QT_OPENGL_ES_2)
+    _glProgramStringARB qt_glProgramStringARB;
+    _glBindProgramARB qt_glBindProgramARB;
+    _glDeleteProgramsARB qt_glDeleteProgramsARB;
+    _glGenProgramsARB qt_glGenProgramsARB;
+    _glProgramLocalParameter4fvARB qt_glProgramLocalParameter4fvARB;
+
+    // GLSL definitions
+    _glCreateShader qt_glCreateShader;
+    _glShaderSource qt_glShaderSource;
+    _glShaderBinary qt_glShaderBinary;
+    _glCompileShader qt_glCompileShader;
+    _glDeleteShader qt_glDeleteShader;
+    _glIsShader qt_glIsShader;
+
+    _glCreateProgram qt_glCreateProgram;
+    _glAttachShader qt_glAttachShader;
+    _glDetachShader qt_glDetachShader;
+    _glLinkProgram qt_glLinkProgram;
+    _glUseProgram qt_glUseProgram;
+    _glDeleteProgram qt_glDeleteProgram;
+    _glIsProgram qt_glIsProgram;
+
+    _glGetShaderInfoLog qt_glGetShaderInfoLog;
+    _glGetShaderiv qt_glGetShaderiv;
+    _glGetShaderSource qt_glGetShaderSource;
+    _glGetProgramiv qt_glGetProgramiv;
+    _glGetProgramInfoLog qt_glGetProgramInfoLog;
+
+    _glGetUniformLocation qt_glGetUniformLocation;
+    _glUniform4fv qt_glUniform4fv;
+    _glUniform3fv qt_glUniform3fv;
+    _glUniform2fv qt_glUniform2fv;
+    _glUniform1fv qt_glUniform1fv;
+    _glUniform1i qt_glUniform1i;
+    _glUniform1iv qt_glUniform1iv;
+    _glUniformMatrix2fv qt_glUniformMatrix2fv;
+    _glUniformMatrix3fv qt_glUniformMatrix3fv;
+    _glUniformMatrix4fv qt_glUniformMatrix4fv;
+    _glUniformMatrix2x3fv qt_glUniformMatrix2x3fv;
+    _glUniformMatrix2x4fv qt_glUniformMatrix2x4fv;
+    _glUniformMatrix3x2fv qt_glUniformMatrix3x2fv;
+    _glUniformMatrix3x4fv qt_glUniformMatrix3x4fv;
+    _glUniformMatrix4x2fv qt_glUniformMatrix4x2fv;
+    _glUniformMatrix4x3fv qt_glUniformMatrix4x3fv;
+
+    _glBindAttribLocation qt_glBindAttribLocation;
+    _glGetAttribLocation qt_glGetAttribLocation;
+    _glVertexAttrib1fv qt_glVertexAttrib1fv;
+    _glVertexAttrib2fv qt_glVertexAttrib2fv;
+    _glVertexAttrib3fv qt_glVertexAttrib3fv;
+    _glVertexAttrib4fv qt_glVertexAttrib4fv;
+    _glVertexAttribPointer qt_glVertexAttribPointer;
+    _glDisableVertexAttribArray qt_glDisableVertexAttribArray;
+    _glEnableVertexAttribArray qt_glEnableVertexAttribArray;
+
+#else
+    bool qt_glslResolved;
+
+    _glGetProgramBinaryOES qt_glGetProgramBinaryOES;
+    _glProgramBinaryOES qt_glProgramBinaryOES;
+#endif
+
+    _glActiveStencilFaceEXT qt_glActiveStencilFaceEXT;
+    _glMultiTexCoord4f qt_glMultiTexCoord4f;
+
+#if !defined(QT_OPENGL_ES_2)
+    // Extras needed for GL2 engine:
+    _glActiveTexture qt_glActiveTexture;
+    _glStencilOpSeparate qt_glStencilOpSeparate;
+    _glBlendColor qt_glBlendColor;
+
+#endif
+
+    // FBOs
+#if !defined(QT_OPENGL_ES_2)
+    _glIsRenderbuffer qt_glIsRenderbuffer;
+    _glBindRenderbuffer qt_glBindRenderbuffer;
+    _glDeleteRenderbuffers qt_glDeleteRenderbuffers;
+    _glGenRenderbuffers qt_glGenRenderbuffers;
+    _glRenderbufferStorage qt_glRenderbufferStorage;
+    _glGetRenderbufferParameteriv qt_glGetRenderbufferParameteriv;
+    _glIsFramebuffer qt_glIsFramebuffer;
+    _glBindFramebuffer qt_glBindFramebuffer;
+    _glDeleteFramebuffers qt_glDeleteFramebuffers;
+    _glGenFramebuffers qt_glGenFramebuffers;
+    _glCheckFramebufferStatus qt_glCheckFramebufferStatus;
+    _glFramebufferTexture2D qt_glFramebufferTexture2D;
+    _glFramebufferRenderbuffer qt_glFramebufferRenderbuffer;
+    _glGetFramebufferAttachmentParameteriv qt_glGetFramebufferAttachmentParameteriv;
+    _glGenerateMipmap qt_glGenerateMipmap;
+#endif
+    _glBlitFramebufferEXT qt_glBlitFramebufferEXT;
+    _glRenderbufferStorageMultisampleEXT qt_glRenderbufferStorageMultisampleEXT;
+
+    // Buffer objects
+#if defined(QGL_RESOLVE_BUFFER_FUNCS)
+    _glBindBuffer qt_glBindBuffer;
+    _glDeleteBuffers qt_glDeleteBuffers;
+    _glGenBuffers qt_glGenBuffers;
+    _glBufferData qt_glBufferData;
+    _glBufferSubData qt_glBufferSubData;
+    _glGetBufferSubData qt_glGetBufferSubData;
+    _glGetBufferParameteriv qt_glGetBufferParameteriv;
+#endif
+    _glMapBufferARB qt_glMapBufferARB;
+    _glUnmapBufferARB qt_glUnmapBufferARB;
+
+    // Geometry shaders...
+    _glProgramParameteriEXT qt_glProgramParameteriEXT;
+    _glFramebufferTextureEXT qt_glFramebufferTextureEXT;
+    _glFramebufferTextureLayerEXT qt_glFramebufferTextureLayerEXT;
+    _glFramebufferTextureFaceEXT qt_glFramebufferTextureFaceEXT;
+#if !defined(QT_OPENGL_ES)
+    // Texture compression
+    _glCompressedTexImage2DARB qt_glCompressedTexImage2DARB;
+#endif
+
+#ifndef QT_NO_EGL
+    // OES_EGL_image
+    _glEGLImageTargetTexture2DOES qt_glEGLImageTargetTexture2DOES;
+    _glEGLImageTargetRenderbufferStorageOES qt_glEGLImageTargetRenderbufferStorageOES;
+#endif
+};
+
+
+// OpenGL constants
+
+#ifndef GL_ARRAY_BUFFER
+#define GL_ARRAY_BUFFER                   0x8892
+#endif
+
+#ifndef GL_STATIC_DRAW
+#define GL_STATIC_DRAW                    0x88E4
+#endif
+
+/* NV_texture_rectangle */
+#ifndef GL_NV_texture_rectangle
+#define GL_TEXTURE_RECTANGLE_NV           0x84F5
+#define GL_TEXTURE_BINDING_RECTANGLE_NV   0x84F6
+#define GL_PROXY_TEXTURE_RECTANGLE_NV     0x84F7
+#define GL_MAX_RECTANGLE_TEXTURE_SIZE_NV  0x84F8
+#endif
+
+#ifndef GL_BGRA
+#define GL_BGRA 0x80E1
+#endif
+
+#ifndef GL_RGB16
+#define GL_RGB16 0x8054
+#endif
+
+#ifndef GL_UNSIGNED_SHORT_5_6_5
+#define GL_UNSIGNED_SHORT_5_6_5 0x8363
+#endif
+
+#ifndef GL_UNSIGNED_INT_8_8_8_8_REV
+#define GL_UNSIGNED_INT_8_8_8_8_REV 0x8367
+#endif
+
+#ifndef GL_MULTISAMPLE
+#define GL_MULTISAMPLE  0x809D
+#endif
+
+#ifndef GL_CLAMP_TO_EDGE
+#define GL_CLAMP_TO_EDGE 0x812F
+#endif
+
+#ifndef GL_IBM_texture_mirrored_repeat
+#define GL_MIRRORED_REPEAT_IBM            0x8370
+#endif
+
+#ifndef GL_SGIS_generate_mipmap
+#define GL_GENERATE_MIPMAP_SGIS           0x8191
+#define GL_GENERATE_MIPMAP_HINT_SGIS      0x8192
+#endif
+
+// ARB_fragment_program extension protos
+#ifndef GL_FRAGMENT_PROGRAM_ARB
+#define GL_FRAGMENT_PROGRAM_ARB           0x8804
+#define GL_PROGRAM_FORMAT_ASCII_ARB       0x8875
+#endif
+
+#ifndef GL_PIXEL_UNPACK_BUFFER_ARB
+#define GL_PIXEL_UNPACK_BUFFER_ARB 0x88EC
+#endif
+
+#ifndef GL_WRITE_ONLY_ARB
+#define GL_WRITE_ONLY_ARB 0x88B9
+#endif
+
+#ifndef GL_STREAM_DRAW_ARB
+#define GL_STREAM_DRAW_ARB 0x88E0
+#endif
+
+// Stencil wrap and two-side defines
+#ifndef GL_STENCIL_TEST_TWO_SIDE_EXT
+#define GL_STENCIL_TEST_TWO_SIDE_EXT 0x8910
+#endif
+#ifndef GL_INCR_WRAP_EXT
+#define GL_INCR_WRAP_EXT 0x8507
+#endif
+#ifndef GL_DECR_WRAP_EXT
+#define GL_DECR_WRAP_EXT 0x8508
+#endif
+
+#ifndef GL_TEXTURE0
+#define GL_TEXTURE0 0x84C0
+#endif
+
+#ifndef GL_TEXTURE1
+#define GL_TEXTURE1 0x84C1
+#endif
+
+#ifndef GL_DEPTH_COMPONENT16
+#define GL_DEPTH_COMPONENT16 0x81A5
+#endif
+
+#ifndef GL_DEPTH_COMPONENT24_OES
+#define GL_DEPTH_COMPONENT24_OES 0x81A6
+#endif
+
+#ifndef GL_EXT_framebuffer_object
+#define GL_INVALID_FRAMEBUFFER_OPERATION_EXT                    0x0506
+#define GL_MAX_RENDERBUFFER_SIZE_EXT                            0x84E8
+#define GL_FRAMEBUFFER_BINDING_EXT                              0x8CA6
+#define GL_RENDERBUFFER_BINDING_EXT                             0x8CA7
+#define GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT               0x8CD0
+#define GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT               0x8CD1
+#define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT             0x8CD2
+#define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT     0x8CD3
+#define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT        0x8CD4
+#define GL_FRAMEBUFFER_COMPLETE_EXT                             0x8CD5
+#define GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT                0x8CD6
+#define GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT        0x8CD7
+#define GL_FRAMEBUFFER_INCOMPLETE_DUPLICATE_ATTACHMENT_EXT      0x8CD8
+#define GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT                0x8CD9
+#define GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT                   0x8CDA
+#define GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT               0x8CDB
+#define GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT               0x8CDC
+#define GL_FRAMEBUFFER_UNSUPPORTED_EXT                          0x8CDD
+#define GL_MAX_COLOR_ATTACHMENTS_EXT                            0x8CDF
+#define GL_COLOR_ATTACHMENT0_EXT                                0x8CE0
+#define GL_COLOR_ATTACHMENT1_EXT                                0x8CE1
+#define GL_COLOR_ATTACHMENT2_EXT                                0x8CE2
+#define GL_COLOR_ATTACHMENT3_EXT                                0x8CE3
+#define GL_COLOR_ATTACHMENT4_EXT                                0x8CE4
+#define GL_COLOR_ATTACHMENT5_EXT                                0x8CE5
+#define GL_COLOR_ATTACHMENT6_EXT                                0x8CE6
+#define GL_COLOR_ATTACHMENT7_EXT                                0x8CE7
+#define GL_COLOR_ATTACHMENT8_EXT                                0x8CE8
+#define GL_COLOR_ATTACHMENT9_EXT                                0x8CE9
+#define GL_COLOR_ATTACHMENT10_EXT                               0x8CEA
+#define GL_COLOR_ATTACHMENT11_EXT                               0x8CEB
+#define GL_COLOR_ATTACHMENT12_EXT                               0x8CEC
+#define GL_COLOR_ATTACHMENT13_EXT                               0x8CED
+#define GL_COLOR_ATTACHMENT14_EXT                               0x8CEE
+#define GL_COLOR_ATTACHMENT15_EXT                               0x8CEF
+#define GL_DEPTH_ATTACHMENT_EXT                                 0x8D00
+#define GL_STENCIL_ATTACHMENT_EXT                               0x8D20
+#define GL_FRAMEBUFFER_EXT                                      0x8D40
+#define GL_RENDERBUFFER_EXT                                     0x8D41
+#define GL_RENDERBUFFER_WIDTH_EXT                               0x8D42
+#define GL_RENDERBUFFER_HEIGHT_EXT                              0x8D43
+#define GL_RENDERBUFFER_INTERNAL_FORMAT_EXT                     0x8D44
+#define GL_STENCIL_INDEX_EXT                                    0x8D45
+#define GL_STENCIL_INDEX1_EXT                                   0x8D46
+#define GL_STENCIL_INDEX4_EXT                                   0x8D47
+#define GL_STENCIL_INDEX8_EXT                                   0x8D48
+#define GL_STENCIL_INDEX16_EXT                                  0x8D49
+#define GL_RENDERBUFFER_RED_SIZE_EXT                            0x8D50
+#define GL_RENDERBUFFER_GREEN_SIZE_EXT                          0x8D51
+#define GL_RENDERBUFFER_BLUE_SIZE_EXT                           0x8D52
+#define GL_RENDERBUFFER_ALPHA_SIZE_EXT                          0x8D53
+#define GL_RENDERBUFFER_DEPTH_SIZE_EXT                          0x8D54
+#define GL_RENDERBUFFER_STENCIL_SIZE_EXT                        0x8D55
+#endif
+
+// GL_EXT_framebuffer_blit
+#ifndef GL_READ_FRAMEBUFFER_EXT
+#define GL_READ_FRAMEBUFFER_EXT                                 0x8CA8
+#endif
+
+// GL_EXT_framebuffer_multisample
+#ifndef GL_RENDERBUFFER_SAMPLES_EXT
+#define GL_RENDERBUFFER_SAMPLES_EXT                             0x8CAB
+#endif
+
+#ifndef GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_EXT
+#define GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_EXT               0x8D56
+#endif
+
+#ifndef GL_MAX_SAMPLES_EXT
+#define GL_MAX_SAMPLES_EXT                                      0x8D57
+#endif
+
+#ifndef GL_DRAW_FRAMEBUFFER_EXT
+#define GL_DRAW_FRAMEBUFFER_EXT                                 0x8CA9
+#endif
+
+#ifndef GL_EXT_packed_depth_stencil
+#define GL_DEPTH_STENCIL_EXT                                    0x84F9
+#define GL_UNSIGNED_INT_24_8_EXT                                0x84FA
+#define GL_DEPTH24_STENCIL8_EXT                                 0x88F0
+#define GL_TEXTURE_STENCIL_SIZE_EXT                             0x88F1
+#endif
+
+// ### hm. should be part of the GL 1.2 spec..
+#ifndef GL_CLAMP_TO_EDGE
+#define GL_CLAMP_TO_EDGE                  0x812F
+#endif
+
+#ifndef GL_VERSION_1_2
+#define GL_PACK_SKIP_IMAGES               0x806B
+#define GL_PACK_IMAGE_HEIGHT              0x806C
+#define GL_UNPACK_SKIP_IMAGES             0x806D
+#define GL_UNPACK_IMAGE_HEIGHT            0x806E
+#endif
+
+#ifndef GL_VERSION_1_4
+#define GL_CONSTANT_COLOR 0x8001
+#define GL_ONE_MINUS_CONSTANT_COLOR 0x8002
+#define GL_CONSTANT_ALPHA 0x8003
+#define GL_ONE_MINUS_CONSTANT_ALPHA 0x8004
+#define GL_INCR_WRAP 0x8507
+#define GL_DECR_WRAP 0x8508
+#endif
+
+#ifndef GL_VERSION_1_5
+#define GL_ARRAY_BUFFER                                         0x8892
+#define GL_ELEMENT_ARRAY_BUFFER                                 0x8893
+#define GL_STREAM_DRAW                                          0x88E0
+#define GL_STREAM_READ                                          0x88E1
+#define GL_STREAM_COPY                                          0x88E2
+#define GL_STATIC_DRAW                                          0x88E4
+#define GL_STATIC_READ                                          0x88E5
+#define GL_STATIC_COPY                                          0x88E6
+#define GL_DYNAMIC_DRAW                                         0x88E8
+#define GL_DYNAMIC_READ                                         0x88E9
+#define GL_DYNAMIC_COPY                                         0x88EA
+#endif
+
+#ifndef GL_VERSION_2_0
+#define GL_FRAGMENT_SHADER 0x8B30
+#define GL_VERTEX_SHADER 0x8B31
+#define GL_FLOAT_VEC2 0x8B50
+#define GL_FLOAT_VEC3 0x8B51
+#define GL_FLOAT_VEC4 0x8B52
+#define GL_INT_VEC2 0x8B53
+#define GL_INT_VEC3 0x8B54
+#define GL_INT_VEC4 0x8B55
+#define GL_BOOL 0x8B56
+#define GL_BOOL_VEC2 0x8B57
+#define GL_BOOL_VEC3 0x8B58
+#define GL_BOOL_VEC4 0x8B59
+#define GL_FLOAT_MAT2 0x8B5A
+#define GL_FLOAT_MAT3 0x8B5B
+#define GL_FLOAT_MAT4 0x8B5C
+#define GL_SAMPLER_1D 0x8B5D
+#define GL_SAMPLER_2D 0x8B5E
+#define GL_SAMPLER_3D 0x8B5F
+#define GL_SAMPLER_CUBE 0x8B60
+#define GL_COMPILE_STATUS 0x8B81
+#define GL_LINK_STATUS 0x8B82
+#define GL_INFO_LOG_LENGTH 0x8B84
+#define GL_ACTIVE_UNIFORMS 0x8B86
+#define GL_ACTIVE_UNIFORM_MAX_LENGTH 0x8B87
+#define GL_ACTIVE_ATTRIBUTES 0x8B89
+#define GL_ACTIVE_ATTRIBUTE_MAX_LENGTH 0x8B8A
+#endif
+
+// Geometry shader defines
+#ifndef GL_GEOMETRY_SHADER_EXT
+#  define GL_GEOMETRY_SHADER_EXT 0x8DD9
+#  define GL_GEOMETRY_VERTICES_OUT_EXT 0x8DDA
+#  define GL_GEOMETRY_INPUT_TYPE_EXT 0x8DDB
+#  define GL_GEOMETRY_OUTPUT_TYPE_EXT 0x8DDC
+#  define GL_MAX_GEOMETRY_TEXTURE_IMAGE_UNITS_EXT 0x8C29
+#  define GL_MAX_GEOMETRY_VARYING_COMPONENTS_EXT 0x8DDD
+#  define GL_MAX_VERTEX_VARYING_COMPONENTS_EXT 0x8DDE
+#  define GL_MAX_VARYING_COMPONENTS_EXT 0x8B4B
+#  define GL_MAX_GEOMETRY_UNIFORM_COMPONENTS_EXT 0x8DDF
+#  define GL_MAX_GEOMETRY_OUTPUT_VERTICES_EXT 0x8DE0
+#  define GL_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS_EXT 0x8DE1
+#  define GL_LINES_ADJACENCY_EXT 0xA
+#  define GL_LINE_STRIP_ADJACENCY_EXT 0xB
+#  define GL_TRIANGLES_ADJACENCY_EXT 0xC
+#  define GL_TRIANGLE_STRIP_ADJACENCY_EXT 0xD
+#  define GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS_EXT 0x8DA8
+#  define GL_FRAMEBUFFER_INCOMPLETE_LAYER_COUNT_EXT 0x8DA9
+#  define GL_FRAMEBUFFER_ATTACHMENT_LAYERED_EXT 0x8DA7
+#  define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LAYER_EXT 0x8CD4
+#  define GL_PROGRAM_POINT_SIZE_EXT 0x8642
+#endif
+
+#if !defined(QT_OPENGL_ES_2)
+#define glProgramStringARB QGLContextPrivate::extensionFuncs(ctx).qt_glProgramStringARB
+#define glBindProgramARB QGLContextPrivate::extensionFuncs(ctx).qt_glBindProgramARB
+#define glDeleteProgramsARB QGLContextPrivate::extensionFuncs(ctx).qt_glDeleteProgramsARB
+#define glGenProgramsARB QGLContextPrivate::extensionFuncs(ctx).qt_glGenProgramsARB
+#define glProgramLocalParameter4fvARB QGLContextPrivate::extensionFuncs(ctx).qt_glProgramLocalParameter4fvARB
+
+#define glActiveStencilFaceEXT QGLContextPrivate::extensionFuncs(ctx).qt_glActiveStencilFaceEXT
+
+#define glMultiTexCoord4f QGLContextPrivate::extensionFuncs(ctx).qt_glMultiTexCoord4f
+
+#define glActiveTexture QGLContextPrivate::extensionFuncs(ctx).qt_glActiveTexture
+#endif // !defined(QT_OPENGL_ES_2)
+
+
+// FBOs
+#if !defined(QT_OPENGL_ES_2)
+#define glIsRenderbuffer QGLContextPrivate::extensionFuncs(ctx).qt_glIsRenderbuffer
+#define glBindRenderbuffer QGLContextPrivate::extensionFuncs(ctx).qt_glBindRenderbuffer
+#define glDeleteRenderbuffers QGLContextPrivate::extensionFuncs(ctx).qt_glDeleteRenderbuffers
+#define glGenRenderbuffers QGLContextPrivate::extensionFuncs(ctx).qt_glGenRenderbuffers
+#define glRenderbufferStorage QGLContextPrivate::extensionFuncs(ctx).qt_glRenderbufferStorage
+#define glGetRenderbufferParameteriv QGLContextPrivate::extensionFuncs(ctx).qt_glGetRenderbufferParameteriv
+#define glIsFramebuffer QGLContextPrivate::extensionFuncs(ctx).qt_glIsFramebuffer
+#define glBindFramebuffer QGLContextPrivate::extensionFuncs(ctx).qt_glBindFramebuffer
+#define glDeleteFramebuffers QGLContextPrivate::extensionFuncs(ctx).qt_glDeleteFramebuffers
+#define glGenFramebuffers QGLContextPrivate::extensionFuncs(ctx).qt_glGenFramebuffers
+#define glCheckFramebufferStatus QGLContextPrivate::extensionFuncs(ctx).qt_glCheckFramebufferStatus
+#define glFramebufferTexture2D QGLContextPrivate::extensionFuncs(ctx).qt_glFramebufferTexture2D
+#define glFramebufferRenderbuffer QGLContextPrivate::extensionFuncs(ctx).qt_glFramebufferRenderbuffer
+#define glGetFramebufferAttachmentParameteriv QGLContextPrivate::extensionFuncs(ctx).qt_glGetFramebufferAttachmentParameteriv
+#define glGenerateMipmap QGLContextPrivate::extensionFuncs(ctx).qt_glGenerateMipmap
+#endif // QT_OPENGL_ES_2
+#define glBlitFramebufferEXT QGLContextPrivate::extensionFuncs(ctx).qt_glBlitFramebufferEXT
+#define glRenderbufferStorageMultisampleEXT QGLContextPrivate::extensionFuncs(ctx).qt_glRenderbufferStorageMultisampleEXT
+
+
+// Buffer objects
+#if defined(QGL_RESOLVE_BUFFER_FUNCS)
+#define glBindBuffer QGLContextPrivate::extensionFuncs(ctx).qt_glBindBuffer
+#define glDeleteBuffers QGLContextPrivate::extensionFuncs(ctx).qt_glDeleteBuffers
+#define glGenBuffers QGLContextPrivate::extensionFuncs(ctx).qt_glGenBuffers
+#define glBufferData QGLContextPrivate::extensionFuncs(ctx).qt_glBufferData
+#define glBufferSubData QGLContextPrivate::extensionFuncs(ctx).qt_glBufferSubData
+#define glGetBufferSubData QGLContextPrivate::extensionFuncs(ctx).qt_glGetBufferSubData
+#define glGetBufferParameteriv QGLContextPrivate::extensionFuncs(ctx).qt_glGetBufferParameteriv
+#endif
+#define glMapBufferARB QGLContextPrivate::extensionFuncs(ctx).qt_glMapBufferARB
+#define glUnmapBufferARB QGLContextPrivate::extensionFuncs(ctx).qt_glUnmapBufferARB
+
+
+// GLSL
+#if !defined(QT_OPENGL_ES_2)
+
+#define glCreateShader QGLContextPrivate::extensionFuncs(ctx).qt_glCreateShader
+#define glShaderSource QGLContextPrivate::extensionFuncs(ctx).qt_glShaderSource
+#define glShaderBinary QGLContextPrivate::extensionFuncs(ctx).qt_glShaderBinary
+#define glCompileShader QGLContextPrivate::extensionFuncs(ctx).qt_glCompileShader
+#define glDeleteShader QGLContextPrivate::extensionFuncs(ctx).qt_glDeleteShader
+#define glIsShader QGLContextPrivate::extensionFuncs(ctx).qt_glIsShader
+
+#define glCreateProgram QGLContextPrivate::extensionFuncs(ctx).qt_glCreateProgram
+#define glAttachShader QGLContextPrivate::extensionFuncs(ctx).qt_glAttachShader
+#define glDetachShader QGLContextPrivate::extensionFuncs(ctx).qt_glDetachShader
+#define glLinkProgram QGLContextPrivate::extensionFuncs(ctx).qt_glLinkProgram
+#define glUseProgram QGLContextPrivate::extensionFuncs(ctx).qt_glUseProgram
+#define glDeleteProgram QGLContextPrivate::extensionFuncs(ctx).qt_glDeleteProgram
+#define glIsProgram QGLContextPrivate::extensionFuncs(ctx).qt_glIsProgram
+
+#define glGetShaderInfoLog QGLContextPrivate::extensionFuncs(ctx).qt_glGetShaderInfoLog
+#define glGetShaderiv QGLContextPrivate::extensionFuncs(ctx).qt_glGetShaderiv
+#define glGetShaderSource QGLContextPrivate::extensionFuncs(ctx).qt_glGetShaderSource
+#define glGetProgramiv QGLContextPrivate::extensionFuncs(ctx).qt_glGetProgramiv
+#define glGetProgramInfoLog QGLContextPrivate::extensionFuncs(ctx).qt_glGetProgramInfoLog
+
+#define glGetUniformLocation QGLContextPrivate::extensionFuncs(ctx).qt_glGetUniformLocation
+#define glUniform4fv QGLContextPrivate::extensionFuncs(ctx).qt_glUniform4fv
+#define glUniform3fv QGLContextPrivate::extensionFuncs(ctx).qt_glUniform3fv
+#define glUniform2fv QGLContextPrivate::extensionFuncs(ctx).qt_glUniform2fv
+#define glUniform1fv QGLContextPrivate::extensionFuncs(ctx).qt_glUniform1fv
+#define glUniform1i QGLContextPrivate::extensionFuncs(ctx).qt_glUniform1i
+#define glUniform1iv QGLContextPrivate::extensionFuncs(ctx).qt_glUniform1iv
+#define glUniformMatrix2fv QGLContextPrivate::extensionFuncs(ctx).qt_glUniformMatrix2fv
+#define glUniformMatrix3fv QGLContextPrivate::extensionFuncs(ctx).qt_glUniformMatrix3fv
+#define glUniformMatrix4fv QGLContextPrivate::extensionFuncs(ctx).qt_glUniformMatrix4fv
+#define glUniformMatrix2x3fv QGLContextPrivate::extensionFuncs(ctx).qt_glUniformMatrix2x3fv
+#define glUniformMatrix2x4fv QGLContextPrivate::extensionFuncs(ctx).qt_glUniformMatrix2x4fv
+#define glUniformMatrix3x2fv QGLContextPrivate::extensionFuncs(ctx).qt_glUniformMatrix3x2fv
+#define glUniformMatrix3x4fv QGLContextPrivate::extensionFuncs(ctx).qt_glUniformMatrix3x4fv
+#define glUniformMatrix4x2fv QGLContextPrivate::extensionFuncs(ctx).qt_glUniformMatrix4x2fv
+#define glUniformMatrix4x3fv QGLContextPrivate::extensionFuncs(ctx).qt_glUniformMatrix4x3fv
+
+#define glBindAttribLocation QGLContextPrivate::extensionFuncs(ctx).qt_glBindAttribLocation
+#define glGetAttribLocation QGLContextPrivate::extensionFuncs(ctx).qt_glGetAttribLocation
+#define glVertexAttrib1fv QGLContextPrivate::extensionFuncs(ctx).qt_glVertexAttrib1fv
+#define glVertexAttrib2fv QGLContextPrivate::extensionFuncs(ctx).qt_glVertexAttrib2fv
+#define glVertexAttrib3fv QGLContextPrivate::extensionFuncs(ctx).qt_glVertexAttrib3fv
+#define glVertexAttrib4fv QGLContextPrivate::extensionFuncs(ctx).qt_glVertexAttrib4fv
+#define glVertexAttribPointer QGLContextPrivate::extensionFuncs(ctx).qt_glVertexAttribPointer
+#define glDisableVertexAttribArray QGLContextPrivate::extensionFuncs(ctx).qt_glDisableVertexAttribArray
+#define glEnableVertexAttribArray QGLContextPrivate::extensionFuncs(ctx).qt_glEnableVertexAttribArray
+
+#else // QT_OPENGL_ES_2
+
+#define glGetProgramBinaryOES QGLContextPrivate::extensionFuncs(ctx).qt_glGetProgramBinaryOES
+#define glProgramBinaryOES QGLContextPrivate::extensionFuncs(ctx).qt_glProgramBinaryOES
+
+#endif // QT_OPENGL_ES_2
+
+
+#if !defined(QT_OPENGL_ES_2)
+#define glStencilOpSeparate QGLContextPrivate::extensionFuncs(ctx).qt_glStencilOpSeparate
+#define glBlendColor QGLContextPrivate::extensionFuncs(ctx).qt_glBlendColor
+#endif
+
+#if defined(QT_OPENGL_ES_2)
+#define glClearDepth glClearDepthf
+#endif
+
+#define glProgramParameteriEXT QGLContextPrivate::extensionFuncs(ctx).qt_glProgramParameteriEXT
+#define glFramebufferTextureEXT QGLContextPrivate::extensionFuncs(ctx).qt_glFramebufferTextureEXT
+#define glFramebufferTextureLayerEXT QGLContextPrivate::extensionFuncs(ctx).qt_glFramebufferTextureLayerEXT
+#define glFramebufferTextureFaceEXT QGLContextPrivate::extensionFuncs(ctx).qt_glFramebufferTextureFaceEXT
+
+#if !defined(QT_OPENGL_ES)
+#define glCompressedTexImage2D QGLContextPrivate::extensionFuncs(ctx).qt_glCompressedTexImage2DARB
+#endif
+
+#ifndef QT_NO_EGL
+// OES_EGL_image
+#define glEGLImageTargetTexture2DOES QGLContextPrivate::extensionFuncs(ctx).qt_glEGLImageTargetTexture2DOES
+#define glEGLImageTargetRenderbufferStorageOES QGLContextPrivate::extensionFuncs(ctx).qt_glEGLImageTargetRenderbufferStorageOES
+#endif
+
+extern bool qt_resolve_framebufferobject_extensions(QGLContext *ctx);
+bool Q_OPENGL_EXPORT qt_resolve_buffer_extensions(QGLContext *ctx);
+
+bool qt_resolve_version_1_3_functions(QGLContext *ctx);
+bool Q_OPENGL_EXPORT qt_resolve_version_2_0_functions(QGLContext *ctx);
+bool qt_resolve_stencil_face_extension(QGLContext *ctx);
+bool qt_resolve_frag_program_extensions(QGLContext *ctx);
+
+bool qt_resolve_glsl_extensions(QGLContext *ctx);
+
+#ifndef QT_NO_EGL
+Q_OPENGL_EXPORT bool qt_resolve_eglimage_gl_extensions(QGLContext *ctx);
+#endif
+
+QT_END_NAMESPACE
+
+#endif // QGL_EXTENSIONS_P_H
diff --git a/src/opengl/qglframebufferobject.cpp b/src/opengl/qglframebufferobject.cpp
new file mode 100644
index 0000000000..8eda222c8d
--- /dev/null
+++ b/src/opengl/qglframebufferobject.cpp
@@ -0,0 +1,1398 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qglframebufferobject.h"
+#include "qglframebufferobject_p.h"
+
+#include <qdebug.h>
+#include <private/qgl_p.h>
+#include <private/qfont_p.h>
+#if !defined(QT_OPENGL_ES_1)
+#include <private/qpaintengineex_opengl2_p.h>
+#endif
+
+#ifndef QT_OPENGL_ES_2
+#include <private/qpaintengine_opengl_p.h>
+#endif
+
+#include <qglframebufferobject.h>
+#include <qlibrary.h>
+#include <qimage.h>
+
+QT_BEGIN_NAMESPACE
+
+extern QImage qt_gl_read_framebuffer(const QSize&, bool, bool);
+
+#define QGL_FUNC_CONTEXT const QGLContext *ctx = d_ptr->fbo_guard.context();
+#define QGL_FUNCP_CONTEXT const QGLContext *ctx = fbo_guard.context();
+
+#ifndef QT_NO_DEBUG
+#define QT_RESET_GLERROR()                                \
+{                                                         \
+    while (glGetError() != GL_NO_ERROR) {}                \
+}
+#define QT_CHECK_GLERROR()                                \
+{                                                         \
+    GLenum err = glGetError();                            \
+    if (err != GL_NO_ERROR) {                             \
+        qDebug("[%s line %d] GL Error: %d",               \
+               __FILE__, __LINE__, (int)err);             \
+    }                                                     \
+}
+#else
+#define QT_RESET_GLERROR() {}
+#define QT_CHECK_GLERROR() {}
+#endif
+
+/*!
+    \class QGLFramebufferObjectFormat
+    \brief The QGLFramebufferObjectFormat class specifies the format of an OpenGL
+    framebuffer object.
+
+    \since 4.6
+
+    \ingroup painting-3D
+
+    A framebuffer object has several characteristics:
+    \list
+    \i \link setSamples() Number of samples per pixels.\endlink
+    \i \link setAttachment() Depth and/or stencil attachments.\endlink
+    \i \link setTextureTarget() Texture target.\endlink
+    \i \link setInternalTextureFormat() Internal texture format.\endlink
+    \endlist
+
+    Note that the desired attachments or number of samples per pixels might not
+    be supported by the hardware driver. Call QGLFramebufferObject::format()
+    after creating a QGLFramebufferObject to find the exact format that was
+    used to create the frame buffer object.
+
+    \sa QGLFramebufferObject
+*/
+
+/*!
+    \internal
+*/
+void QGLFramebufferObjectFormat::detach()
+{
+    if (d->ref != 1) {
+        QGLFramebufferObjectFormatPrivate *newd
+            = new QGLFramebufferObjectFormatPrivate(d);
+        if (!d->ref.deref())
+            delete d;
+        d = newd;
+    }
+}
+
+/*!
+    Creates a QGLFramebufferObjectFormat object for specifying
+    the format of an OpenGL framebuffer object.
+
+    By default the format specifies a non-multisample framebuffer object with no
+    attachments, texture target \c GL_TEXTURE_2D, and internal format \c GL_RGBA8.
+    On OpenGL/ES systems, the default internal format is \c GL_RGBA.
+
+    \sa samples(), attachment(), internalTextureFormat()
+*/
+
+QGLFramebufferObjectFormat::QGLFramebufferObjectFormat()
+{
+    d = new QGLFramebufferObjectFormatPrivate;
+}
+
+/*!
+    Constructs a copy of \a other.
+*/
+
+QGLFramebufferObjectFormat::QGLFramebufferObjectFormat(const QGLFramebufferObjectFormat &other)
+{
+    d = other.d;
+    d->ref.ref();
+}
+
+/*!
+    Assigns \a other to this object.
+*/
+
+QGLFramebufferObjectFormat &QGLFramebufferObjectFormat::operator=(const QGLFramebufferObjectFormat &other)
+{
+    if (d != other.d) {
+        other.d->ref.ref();
+        if (!d->ref.deref())
+            delete d;
+        d = other.d;
+    }
+    return *this;
+}
+
+/*!
+    Destroys the QGLFramebufferObjectFormat.
+*/
+QGLFramebufferObjectFormat::~QGLFramebufferObjectFormat()
+{
+    if (!d->ref.deref())
+        delete d;
+}
+
+/*!
+    Sets the number of samples per pixel for a multisample framebuffer object
+    to \a samples.  The default sample count of 0 represents a regular
+    non-multisample framebuffer object.
+
+    If the desired amount of samples per pixel is not supported by the hardware
+    then the maximum number of samples per pixel will be used. Note that
+    multisample framebuffer objects can not be bound as textures. Also, the
+    \c{GL_EXT_framebuffer_multisample} extension is required to create a
+    framebuffer with more than one sample per pixel.
+
+    \sa samples()
+*/
+void QGLFramebufferObjectFormat::setSamples(int samples)
+{
+    detach();
+    d->samples = samples;
+}
+
+/*!
+    Returns the number of samples per pixel if a framebuffer object
+    is a multisample framebuffer object. Otherwise, returns 0.
+    The default value is 0.
+
+    \sa setSamples()
+*/
+int QGLFramebufferObjectFormat::samples() const
+{
+    return d->samples;
+}
+
+/*!
+    \since 4.8
+
+    Enables or disables mipmapping. Mipmapping is disabled by default.
+    If mipmapping is enabled, additional memory will be allocated for
+    the mipmap levels. The mipmap levels can be updated by binding the
+    texture and calling glGenerateMipmap(). Mipmapping cannot be enabled
+    for multisampled framebuffer objects.
+
+    \sa mipmap(), texture()
+*/
+void QGLFramebufferObjectFormat::setMipmap(bool enabled)
+{
+    detach();
+    d->mipmap = enabled;
+}
+
+/*!
+    \since 4.8
+
+    Returns true if mipmapping is enabled.
+
+    \sa setMipmap()
+*/
+bool QGLFramebufferObjectFormat::mipmap() const
+{
+    return d->mipmap;
+}
+
+/*!
+    Sets the attachment configuration of a framebuffer object to \a attachment.
+
+    \sa attachment()
+*/
+void QGLFramebufferObjectFormat::setAttachment(QGLFramebufferObject::Attachment attachment)
+{
+    detach();
+    d->attachment = attachment;
+}
+
+/*!
+    Returns the configuration of the depth and stencil buffers attached to
+    a framebuffer object.  The default is QGLFramebufferObject::NoAttachment.
+
+    \sa setAttachment()
+*/
+QGLFramebufferObject::Attachment QGLFramebufferObjectFormat::attachment() const
+{
+    return d->attachment;
+}
+
+/*!
+    Sets the texture target of the texture attached to a framebuffer object to
+    \a target. Ignored for multisample framebuffer objects.
+
+    \sa textureTarget(), samples()
+*/
+void QGLFramebufferObjectFormat::setTextureTarget(GLenum target)
+{
+    detach();
+    d->target = target;
+}
+
+/*!
+    Returns the texture target of the texture attached to a framebuffer object.
+    Ignored for multisample framebuffer objects.  The default is
+    \c GL_TEXTURE_2D.
+
+    \sa setTextureTarget(), samples()
+*/
+GLenum QGLFramebufferObjectFormat::textureTarget() const
+{
+    return d->target;
+}
+
+/*!
+    Sets the internal format of a framebuffer object's texture or
+    multisample framebuffer object's color buffer to
+    \a internalTextureFormat.
+
+    \sa internalTextureFormat()
+*/
+void QGLFramebufferObjectFormat::setInternalTextureFormat(GLenum internalTextureFormat)
+{
+    detach();
+    d->internal_format = internalTextureFormat;
+}
+
+/*!
+    Returns the internal format of a framebuffer object's texture or
+    multisample framebuffer object's color buffer.  The default is
+    \c GL_RGBA8 on desktop OpenGL systems, and \c GL_RGBA on
+    OpenGL/ES systems.
+
+    \sa setInternalTextureFormat()
+*/
+GLenum QGLFramebufferObjectFormat::internalTextureFormat() const
+{
+    return d->internal_format;
+}
+
+#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
+/*! \internal */
+void QGLFramebufferObjectFormat::setTextureTarget(QMacCompatGLenum target)
+{
+    detach();
+    d->target = target;
+}
+
+/*! \internal */
+void QGLFramebufferObjectFormat::setInternalTextureFormat(QMacCompatGLenum internalTextureFormat)
+{
+    detach();
+    d->internal_format = internalTextureFormat;
+}
+#endif
+
+/*!
+    Returns true if all the options of this framebuffer object format
+    are the same as \a other; otherwise returns false.
+*/
+bool QGLFramebufferObjectFormat::operator==(const QGLFramebufferObjectFormat& other) const
+{
+    if (d == other.d)
+        return true;
+    else
+        return d->equals(other.d);
+}
+
+/*!
+    Returns false if all the options of this framebuffer object format
+    are the same as \a other; otherwise returns true.
+*/
+bool QGLFramebufferObjectFormat::operator!=(const QGLFramebufferObjectFormat& other) const
+{
+    return !(*this == other);
+}
+
+void QGLFBOGLPaintDevice::setFBO(QGLFramebufferObject* f,
+                                 QGLFramebufferObject::Attachment attachment)
+{
+    fbo = f;
+    m_thisFBO = fbo->d_func()->fbo(); // This shouldn't be needed
+
+    // The context that the fbo was created in may not have depth
+    // and stencil buffers, but the fbo itself might.
+    fboFormat = QGLContext::currentContext()->format();
+    if (attachment == QGLFramebufferObject::CombinedDepthStencil) {
+        fboFormat.setDepth(true);
+        fboFormat.setStencil(true);
+    } else if (attachment == QGLFramebufferObject::Depth) {
+        fboFormat.setDepth(true);
+        fboFormat.setStencil(false);
+    } else {
+        fboFormat.setDepth(false);
+        fboFormat.setStencil(false);
+    }
+
+    GLenum format = f->format().internalTextureFormat();
+    reqAlpha = (format != GL_RGB
+#ifndef QT_OPENGL_ES
+                && format != GL_RGB5 && format != GL_RGB8
+#endif
+    );
+}
+
+QGLContext *QGLFBOGLPaintDevice::context() const
+{
+    QGLContext *fboContext = const_cast<QGLContext *>(fbo->d_ptr->fbo_guard.context());
+    QGLContext *currentContext = const_cast<QGLContext *>(QGLContext::currentContext());
+
+    if (QGLContextPrivate::contextGroup(fboContext) == QGLContextPrivate::contextGroup(currentContext))
+        return currentContext;
+    else
+        return fboContext;
+}
+
+bool QGLFramebufferObjectPrivate::checkFramebufferStatus() const
+{
+    QGL_FUNCP_CONTEXT;
+    if (!ctx)
+        return false;   // Context no longer exists.
+    GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER_EXT);
+    switch(status) {
+    case GL_NO_ERROR:
+    case GL_FRAMEBUFFER_COMPLETE_EXT:
+        return true;
+        break;
+    case GL_FRAMEBUFFER_UNSUPPORTED_EXT:
+        qDebug("QGLFramebufferObject: Unsupported framebuffer format.");
+        break;
+    case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT:
+        qDebug("QGLFramebufferObject: Framebuffer incomplete attachment.");
+        break;
+    case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT:
+        qDebug("QGLFramebufferObject: Framebuffer incomplete, missing attachment.");
+        break;
+#ifdef GL_FRAMEBUFFER_INCOMPLETE_DUPLICATE_ATTACHMENT_EXT
+    case GL_FRAMEBUFFER_INCOMPLETE_DUPLICATE_ATTACHMENT_EXT:
+        qDebug("QGLFramebufferObject: Framebuffer incomplete, duplicate attachment.");
+        break;
+#endif
+    case GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT:
+        qDebug("QGLFramebufferObject: Framebuffer incomplete, attached images must have same dimensions.");
+        break;
+    case GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT:
+        qDebug("QGLFramebufferObject: Framebuffer incomplete, attached images must have same format.");
+        break;
+    case GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT:
+        qDebug("QGLFramebufferObject: Framebuffer incomplete, missing draw buffer.");
+        break;
+    case GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT:
+        qDebug("QGLFramebufferObject: Framebuffer incomplete, missing read buffer.");
+        break;
+    case GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_EXT:
+        qDebug("QGLFramebufferObject: Framebuffer incomplete, attachments must have same number of samples per pixel.");
+        break;
+    default:
+        qDebug() <<"QGLFramebufferObject: An undefined error has occurred: "<< status;
+        break;
+    }
+    return false;
+}
+
+void QGLFramebufferObjectPrivate::init(QGLFramebufferObject *q, const QSize &sz,
+                                       QGLFramebufferObject::Attachment attachment,
+                                       GLenum texture_target, GLenum internal_format,
+                                       GLint samples, bool mipmap)
+{
+    QGLContext *ctx = const_cast<QGLContext *>(QGLContext::currentContext());
+    fbo_guard.setContext(ctx);
+
+    bool ext_detected = (QGLExtensions::glExtensions() & QGLExtensions::FramebufferObject);
+    if (!ext_detected || (ext_detected && !qt_resolve_framebufferobject_extensions(ctx)))
+        return;
+
+    size = sz;
+    target = texture_target;
+    // texture dimensions
+
+    QT_RESET_GLERROR(); // reset error state
+    GLuint fbo = 0;
+    glGenFramebuffers(1, &fbo);
+    glBindFramebuffer(GL_FRAMEBUFFER_EXT, fbo);
+    fbo_guard.setId(fbo);
+
+    glDevice.setFBO(q, attachment);
+
+    QT_CHECK_GLERROR();
+    // init texture
+    if (samples == 0) {
+        glGenTextures(1, &texture);
+        glBindTexture(target, texture);
+        glTexImage2D(target, 0, internal_format, size.width(), size.height(), 0,
+                GL_RGBA, GL_UNSIGNED_BYTE, NULL);
+        if (mipmap)
+            glGenerateMipmap(GL_TEXTURE_2D);
+#ifndef QT_OPENGL_ES
+        glTexParameteri(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+        glTexParameteri(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+        glTexParameteri(target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+        glTexParameteri(target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+#else
+        glTexParameterf(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+        glTexParameterf(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+        glTexParameterf(target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+        glTexParameterf(target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+#endif
+        glFramebufferTexture2D(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
+                target, texture, 0);
+
+        QT_CHECK_GLERROR();
+        valid = checkFramebufferStatus();
+        glBindTexture(target, 0);
+
+        color_buffer = 0;
+    } else {
+        mipmap = false;
+        GLint maxSamples;
+        glGetIntegerv(GL_MAX_SAMPLES_EXT, &maxSamples);
+
+        samples = qBound(0, int(samples), int(maxSamples));
+
+        glGenRenderbuffers(1, &color_buffer);
+        glBindRenderbuffer(GL_RENDERBUFFER_EXT, color_buffer);
+        if (glRenderbufferStorageMultisampleEXT && samples > 0) {
+            glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER_EXT, samples,
+                internal_format, size.width(), size.height());
+        } else {
+            samples = 0;
+            glRenderbufferStorage(GL_RENDERBUFFER_EXT, internal_format,
+                size.width(), size.height());
+        }
+
+        glFramebufferRenderbuffer(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
+                                     GL_RENDERBUFFER_EXT, color_buffer);
+
+        QT_CHECK_GLERROR();
+        valid = checkFramebufferStatus();
+
+        if (valid)
+            glGetRenderbufferParameteriv(GL_RENDERBUFFER_EXT, GL_RENDERBUFFER_SAMPLES_EXT, &samples);
+    }
+
+    // In practice, a combined depth-stencil buffer is supported by all desktop platforms, while a
+    // separate stencil buffer is not. On embedded devices however, a combined depth-stencil buffer
+    // might not be supported while separate buffers are, according to QTBUG-12861.
+
+    if (attachment == QGLFramebufferObject::CombinedDepthStencil
+        && (QGLExtensions::glExtensions() & QGLExtensions::PackedDepthStencil)) {
+        // depth and stencil buffer needs another extension
+        glGenRenderbuffers(1, &depth_buffer);
+        Q_ASSERT(!glIsRenderbuffer(depth_buffer));
+        glBindRenderbuffer(GL_RENDERBUFFER_EXT, depth_buffer);
+        Q_ASSERT(glIsRenderbuffer(depth_buffer));
+        if (samples != 0 && glRenderbufferStorageMultisampleEXT)
+            glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER_EXT, samples,
+                GL_DEPTH24_STENCIL8_EXT, size.width(), size.height());
+        else
+            glRenderbufferStorage(GL_RENDERBUFFER_EXT,
+                GL_DEPTH24_STENCIL8_EXT, size.width(), size.height());
+
+        stencil_buffer = depth_buffer;
+        glFramebufferRenderbuffer(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT,
+                                     GL_RENDERBUFFER_EXT, depth_buffer);
+        glFramebufferRenderbuffer(GL_FRAMEBUFFER_EXT, GL_STENCIL_ATTACHMENT_EXT,
+                                     GL_RENDERBUFFER_EXT, stencil_buffer);
+
+        valid = checkFramebufferStatus();
+        if (!valid) {
+            glDeleteRenderbuffers(1, &depth_buffer);
+            stencil_buffer = depth_buffer = 0;
+        }
+    }
+
+    if (depth_buffer == 0 && (attachment == QGLFramebufferObject::CombinedDepthStencil
+        || (attachment == QGLFramebufferObject::Depth)))
+    {
+        glGenRenderbuffers(1, &depth_buffer);
+        Q_ASSERT(!glIsRenderbuffer(depth_buffer));
+        glBindRenderbuffer(GL_RENDERBUFFER_EXT, depth_buffer);
+        Q_ASSERT(glIsRenderbuffer(depth_buffer));
+        if (samples != 0 && glRenderbufferStorageMultisampleEXT) {
+#ifdef QT_OPENGL_ES
+            if (QGLExtensions::glExtensions() & QGLExtensions::Depth24) {
+                glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER_EXT, samples,
+                    GL_DEPTH_COMPONENT24_OES, size.width(), size.height());
+            } else {
+                glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER_EXT, samples,
+                    GL_DEPTH_COMPONENT16, size.width(), size.height());
+            }
+#else
+            glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER_EXT, samples,
+                GL_DEPTH_COMPONENT, size.width(), size.height());
+#endif
+        } else {
+#ifdef QT_OPENGL_ES
+            if (QGLExtensions::glExtensions() & QGLExtensions::Depth24) {
+                glRenderbufferStorage(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT24_OES, 
+                                        size.width(), size.height());
+            } else {
+                glRenderbufferStorage(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT16, 
+                                        size.width(), size.height());
+            }
+#else
+            glRenderbufferStorage(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT, size.width(), size.height());
+#endif
+        }
+        glFramebufferRenderbuffer(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT,
+                                     GL_RENDERBUFFER_EXT, depth_buffer);
+        valid = checkFramebufferStatus();
+        if (!valid) {
+            glDeleteRenderbuffers(1, &depth_buffer);
+            depth_buffer = 0;
+        }
+    }
+
+    if (stencil_buffer == 0 && (attachment == QGLFramebufferObject::CombinedDepthStencil)) {
+        glGenRenderbuffers(1, &stencil_buffer);
+        Q_ASSERT(!glIsRenderbuffer(stencil_buffer));
+        glBindRenderbuffer(GL_RENDERBUFFER_EXT, stencil_buffer);
+        Q_ASSERT(glIsRenderbuffer(stencil_buffer));
+        if (samples != 0 && glRenderbufferStorageMultisampleEXT) {
+#ifdef QT_OPENGL_ES
+            glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER_EXT, samples,
+                GL_STENCIL_INDEX8_EXT, size.width(), size.height());
+#else
+            glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER_EXT, samples,
+                GL_STENCIL_INDEX, size.width(), size.height());
+#endif
+        } else {
+#ifdef QT_OPENGL_ES
+            glRenderbufferStorage(GL_RENDERBUFFER_EXT, GL_STENCIL_INDEX8_EXT,
+                                  size.width(), size.height());
+#else
+            glRenderbufferStorage(GL_RENDERBUFFER_EXT, GL_STENCIL_INDEX,
+                                  size.width(), size.height());
+#endif
+        }
+        glFramebufferRenderbuffer(GL_FRAMEBUFFER_EXT, GL_STENCIL_ATTACHMENT_EXT,
+                                  GL_RENDERBUFFER_EXT, stencil_buffer);
+        valid = checkFramebufferStatus();
+        if (!valid) {
+            glDeleteRenderbuffers(1, &stencil_buffer);
+            stencil_buffer = 0;
+        }
+    }
+
+    // The FBO might have become valid after removing the depth or stencil buffer.
+    valid = checkFramebufferStatus();
+
+    if (depth_buffer && stencil_buffer) {
+        fbo_attachment = QGLFramebufferObject::CombinedDepthStencil;
+    } else if (depth_buffer) {
+        fbo_attachment = QGLFramebufferObject::Depth;
+    } else {
+        fbo_attachment = QGLFramebufferObject::NoAttachment;
+    }
+
+    glBindFramebuffer(GL_FRAMEBUFFER_EXT, ctx->d_ptr->current_fbo);
+    if (!valid) {
+        if (color_buffer)
+            glDeleteRenderbuffers(1, &color_buffer);
+        else
+            glDeleteTextures(1, &texture);
+        if (depth_buffer)
+            glDeleteRenderbuffers(1, &depth_buffer);
+        if (stencil_buffer && depth_buffer != stencil_buffer)
+            glDeleteRenderbuffers(1, &stencil_buffer);
+        glDeleteFramebuffers(1, &fbo);
+        fbo_guard.setId(0);
+    }
+    QT_CHECK_GLERROR();
+
+    format.setTextureTarget(target);
+    format.setSamples(int(samples));
+    format.setAttachment(fbo_attachment);
+    format.setInternalTextureFormat(internal_format);
+    format.setMipmap(mipmap);
+}
+
+/*!
+    \class QGLFramebufferObject
+    \brief The QGLFramebufferObject class encapsulates an OpenGL framebuffer object.
+    \since 4.2
+
+    \ingroup painting-3D
+
+    The QGLFramebufferObject class encapsulates an OpenGL framebuffer
+    object, defined by the \c{GL_EXT_framebuffer_object} extension. In
+    addition it provides a rendering surface that can be painted on
+    with a QPainter, rendered to using native GL calls, or both. This
+    surface can be bound and used as a regular texture in your own GL
+    drawing code.  By default, the QGLFramebufferObject class
+    generates a 2D GL texture (using the \c{GL_TEXTURE_2D} target),
+    which is used as the internal rendering target.
+
+    \bold{It is important to have a current GL context when creating a
+    QGLFramebufferObject, otherwise initialization will fail.}
+
+    OpenGL framebuffer objects and pbuffers (see
+    \l{QGLPixelBuffer}{QGLPixelBuffer}) can both be used to render to
+    offscreen surfaces, but there are a number of advantages with
+    using framebuffer objects instead of pbuffers:
+
+    \list 1
+    \o A framebuffer object does not require a separate rendering
+    context, so no context switching will occur when switching
+    rendering targets. There is an overhead involved in switching
+    targets, but in general it is cheaper than a context switch to a
+    pbuffer.
+
+    \o Rendering to dynamic textures (i.e. render-to-texture
+    functionality) works on all platforms. No need to do explicit copy
+    calls from a render buffer into a texture, as was necessary on
+    systems that did not support the \c{render_texture} extension.
+
+    \o It is possible to attach several rendering buffers (or texture
+    objects) to the same framebuffer object, and render to all of them
+    without doing a context switch.
+
+    \o The OpenGL framebuffer extension is a pure GL extension with no
+    system dependant WGL, CGL, or GLX parts. This makes using
+    framebuffer objects more portable.
+    \endlist
+
+    When using a QPainter to paint to a QGLFramebufferObject you should take
+    care that the QGLFramebufferObject is created with the CombinedDepthStencil
+    attachment for QPainter to be able to render correctly.
+    Note that you need to create a QGLFramebufferObject with more than one
+    sample per pixel for primitives to be antialiased when drawing using a
+    QPainter. To create a multisample framebuffer object you should use one of
+    the constructors that take a QGLFramebufferObject parameter, and set the
+    QGLFramebufferObject::samples() property to a non-zero value.
+
+    When painting to a QGLFramebufferObject using QPainter, the state of
+    the current GL context will be altered by the paint engine to reflect
+    its needs.  Applications should not rely upon the GL state being reset
+    to its original conditions, particularly the current shader program,
+    GL viewport, texture units, and drawing modes.
+
+    For multisample framebuffer objects a color render buffer is created,
+    otherwise a texture with the specified texture target is created.
+    The color render buffer or texture will have the specified internal
+    format, and will be bound to the \c GL_COLOR_ATTACHMENT0
+    attachment in the framebuffer object.
+
+    If you want to use a framebuffer object with multisampling enabled
+    as a texture, you first need to copy from it to a regular framebuffer
+    object using QGLContext::blitFramebuffer().
+
+    \section Threading
+
+    As of Qt 4.8, it's possible to draw into a QGLFramebufferObject
+    using a QPainter in a separate thread. Note that OpenGL 2.0 or
+    OpenGL ES 2.0 is required for this to work. Also, under X11, it's
+    necessary to set the Qt::AA_X11InitThreads application attribute.
+
+    \sa {Framebuffer Object Example}
+*/
+
+
+/*!
+    \enum QGLFramebufferObject::Attachment
+    \since 4.3
+
+    This enum type is used to configure the depth and stencil buffers
+    attached to the framebuffer object when it is created.
+
+    \value NoAttachment         No attachment is added to the framebuffer object. Note that the
+                                OpenGL depth and stencil tests won't work when rendering to a
+                                framebuffer object without any depth or stencil buffers.
+                                This is the default value.
+
+    \value CombinedDepthStencil If the \c GL_EXT_packed_depth_stencil extension is present,
+                                a combined depth and stencil buffer is attached.
+                                If the extension is not present, only a depth buffer is attached.
+
+    \value Depth                A depth buffer is attached to the framebuffer object.
+
+    \sa attachment()
+*/
+
+
+/*! \fn QGLFramebufferObject::QGLFramebufferObject(const QSize &size, GLenum target)
+
+    Constructs an OpenGL framebuffer object and binds a 2D GL texture
+    to the buffer of the size \a size. The texture is bound to the
+    \c GL_COLOR_ATTACHMENT0 target in the framebuffer object.
+
+    The \a target parameter is used to specify the GL texture
+    target. The default target is \c GL_TEXTURE_2D. Keep in mind that
+    \c GL_TEXTURE_2D textures must have a power of 2 width and height
+    (e.g. 256x512), unless you are using OpenGL 2.0 or higher.
+
+    By default, no depth and stencil buffers are attached. This behavior
+    can be toggled using one of the overloaded constructors.
+
+    The default internal texture format is \c GL_RGBA8 for desktop
+    OpenGL, and \c GL_RGBA for OpenGL/ES.
+
+    It is important that you have a current GL context set when
+    creating the QGLFramebufferObject, otherwise the initialization
+    will fail.
+
+    \sa size(), texture(), attachment()
+*/
+
+QGLFramebufferObject::QGLFramebufferObject(const QSize &size, GLenum target)
+    : d_ptr(new QGLFramebufferObjectPrivate)
+{
+    Q_D(QGLFramebufferObject);
+    d->init(this, size, NoAttachment, target, DEFAULT_FORMAT);
+}
+
+#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
+/*! \internal */
+QGLFramebufferObject::QGLFramebufferObject(const QSize &size, QMacCompatGLenum target)
+    : d_ptr(new QGLFramebufferObjectPrivate)
+{
+    Q_D(QGLFramebufferObject);
+    d->init(this, size, NoAttachment, target, DEFAULT_FORMAT);
+}
+#endif
+
+/*! \overload
+
+    Constructs an OpenGL framebuffer object and binds a 2D GL texture
+    to the buffer of the given \a width and \a height.
+
+    \sa size(), texture()
+*/
+QGLFramebufferObject::QGLFramebufferObject(int width, int height, GLenum target)
+    : d_ptr(new QGLFramebufferObjectPrivate)
+{
+    Q_D(QGLFramebufferObject);
+    d->init(this, QSize(width, height), NoAttachment, target, DEFAULT_FORMAT);
+}
+
+/*! \overload
+
+    Constructs an OpenGL framebuffer object of the given \a size based on the
+    supplied \a format.
+*/
+
+QGLFramebufferObject::QGLFramebufferObject(const QSize &size, const QGLFramebufferObjectFormat &format)
+    : d_ptr(new QGLFramebufferObjectPrivate)
+{
+    Q_D(QGLFramebufferObject);
+    d->init(this, size, format.attachment(), format.textureTarget(), format.internalTextureFormat(),
+            format.samples(), format.mipmap());
+}
+
+/*! \overload
+
+    Constructs an OpenGL framebuffer object of the given \a width and \a height
+    based on the supplied \a format.
+*/
+
+QGLFramebufferObject::QGLFramebufferObject(int width, int height, const QGLFramebufferObjectFormat &format)
+    : d_ptr(new QGLFramebufferObjectPrivate)
+{
+    Q_D(QGLFramebufferObject);
+    d->init(this, QSize(width, height), format.attachment(), format.textureTarget(),
+            format.internalTextureFormat(), format.samples(), format.mipmap());
+}
+
+#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
+/*! \internal */
+QGLFramebufferObject::QGLFramebufferObject(int width, int height, QMacCompatGLenum target)
+    : d_ptr(new QGLFramebufferObjectPrivate)
+{
+    Q_D(QGLFramebufferObject);
+    d->init(this, QSize(width, height), NoAttachment, target, DEFAULT_FORMAT);
+}
+#endif
+
+/*! \overload
+
+    Constructs an OpenGL framebuffer object and binds a texture to the
+    buffer of the given \a width and \a height.
+
+    The \a attachment parameter describes the depth/stencil buffer
+    configuration, \a target the texture target and \a internal_format
+    the internal texture format. The default texture target is \c
+    GL_TEXTURE_2D, while the default internal format is \c GL_RGBA8
+    for desktop OpenGL and \c GL_RGBA for OpenGL/ES.
+
+    \sa size(), texture(), attachment()
+*/
+QGLFramebufferObject::QGLFramebufferObject(int width, int height, Attachment attachment,
+                                           GLenum target, GLenum internal_format)
+    : d_ptr(new QGLFramebufferObjectPrivate)
+{
+    Q_D(QGLFramebufferObject);
+    d->init(this, QSize(width, height), attachment, target, internal_format);
+}
+
+#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
+/*! \internal */
+QGLFramebufferObject::QGLFramebufferObject(int width, int height, Attachment attachment,
+                                           QMacCompatGLenum target, QMacCompatGLenum internal_format)
+    : d_ptr(new QGLFramebufferObjectPrivate)
+{
+    Q_D(QGLFramebufferObject);
+    d->init(this, QSize(width, height), attachment, target, internal_format);
+}
+#endif
+
+/*! \overload
+
+    Constructs an OpenGL framebuffer object and binds a texture to the
+    buffer of the given \a size.
+
+    The \a attachment parameter describes the depth/stencil buffer
+    configuration, \a target the texture target and \a internal_format
+    the internal texture format. The default texture target is \c
+    GL_TEXTURE_2D, while the default internal format is \c GL_RGBA8
+    for desktop OpenGL and \c GL_RGBA for OpenGL/ES.
+
+    \sa size(), texture(), attachment()
+*/
+QGLFramebufferObject::QGLFramebufferObject(const QSize &size, Attachment attachment,
+                                           GLenum target, GLenum internal_format)
+    : d_ptr(new QGLFramebufferObjectPrivate)
+{
+    Q_D(QGLFramebufferObject);
+    d->init(this, size, attachment, target, internal_format);
+}
+
+#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
+/*! \internal */
+QGLFramebufferObject::QGLFramebufferObject(const QSize &size, Attachment attachment,
+                                           QMacCompatGLenum target, QMacCompatGLenum internal_format)
+    : d_ptr(new QGLFramebufferObjectPrivate)
+{
+    Q_D(QGLFramebufferObject);
+    d->init(this, size, attachment, target, internal_format);
+}
+#endif
+
+/*!
+    \fn QGLFramebufferObject::~QGLFramebufferObject()
+
+    Destroys the framebuffer object and frees any allocated resources.
+*/
+QGLFramebufferObject::~QGLFramebufferObject()
+{
+    Q_D(QGLFramebufferObject);
+    QGL_FUNC_CONTEXT;
+
+    delete d->engine;
+
+    if (isValid() && ctx) {
+        QGLShareContextScope scope(ctx);
+        if (d->texture)
+            glDeleteTextures(1, &d->texture);
+        if (d->color_buffer)
+            glDeleteRenderbuffers(1, &d->color_buffer);
+        if (d->depth_buffer)
+            glDeleteRenderbuffers(1, &d->depth_buffer);
+        if (d->stencil_buffer && d->stencil_buffer != d->depth_buffer)
+            glDeleteRenderbuffers(1, &d->stencil_buffer);
+        GLuint fbo = d->fbo();
+        glDeleteFramebuffers(1, &fbo);
+    }
+}
+
+/*!
+    \fn bool QGLFramebufferObject::isValid() const
+
+    Returns true if the framebuffer object is valid.
+
+    The framebuffer can become invalid if the initialization process
+    fails, the user attaches an invalid buffer to the framebuffer
+    object, or a non-power of two width/height is specified as the
+    texture size if the texture target is \c{GL_TEXTURE_2D}.
+    The non-power of two limitation does not apply if the OpenGL version
+    is 2.0 or higher, or if the GL_ARB_texture_non_power_of_two extension
+    is present.
+
+    The framebuffer can also become invalid if the QGLContext that
+    the framebuffer was created within is destroyed and there are
+    no other shared contexts that can take over ownership of the
+    framebuffer.
+*/
+bool QGLFramebufferObject::isValid() const
+{
+    Q_D(const QGLFramebufferObject);
+    return d->valid && d->fbo_guard.context();
+}
+
+/*!
+    \fn bool QGLFramebufferObject::bind()
+
+    Switches rendering from the default, windowing system provided
+    framebuffer to this framebuffer object.
+    Returns true upon success, false otherwise.
+
+    \sa release()
+*/
+bool QGLFramebufferObject::bind()
+{
+    if (!isValid())
+	return false;
+    Q_D(QGLFramebufferObject);
+    QGL_FUNC_CONTEXT;
+    if (!ctx)
+        return false;   // Context no longer exists.
+    const QGLContext *current = QGLContext::currentContext();
+#ifdef QT_DEBUG
+    if (!current ||
+        QGLContextPrivate::contextGroup(current) != QGLContextPrivate::contextGroup(ctx))
+    {
+        qWarning("QGLFramebufferObject::bind() called from incompatible context");
+    }
+#endif
+    glBindFramebuffer(GL_FRAMEBUFFER_EXT, d->fbo());
+    d->valid = d->checkFramebufferStatus();
+    if (d->valid && current)
+        current->d_ptr->current_fbo = d->fbo();
+    return d->valid;
+}
+
+/*!
+    \fn bool QGLFramebufferObject::release()
+
+    Switches rendering back to the default, windowing system provided
+    framebuffer.
+    Returns true upon success, false otherwise.
+
+    \sa bind()
+*/
+bool QGLFramebufferObject::release()
+{
+    if (!isValid())
+	return false;
+    QGL_FUNC_CONTEXT;
+    if (!ctx)
+        return false;   // Context no longer exists.
+
+    const QGLContext *current = QGLContext::currentContext();
+
+#ifdef QT_DEBUG
+    if (!current ||
+        QGLContextPrivate::contextGroup(current) != QGLContextPrivate::contextGroup(ctx))
+    {
+        qWarning("QGLFramebufferObject::release() called from incompatible context");
+    }
+#endif
+
+    if (current) {
+        current->d_ptr->current_fbo = current->d_ptr->default_fbo;
+        glBindFramebuffer(GL_FRAMEBUFFER_EXT, current->d_ptr->default_fbo);
+    }
+
+    return true;
+}
+
+/*!
+    \fn GLuint QGLFramebufferObject::texture() const
+
+    Returns the texture id for the texture attached as the default
+    rendering target in this framebuffer object. This texture id can
+    be bound as a normal texture in your own GL code.
+
+    If a multisample framebuffer object is used then the value returned
+    from this function will be invalid.
+*/
+GLuint QGLFramebufferObject::texture() const
+{
+    Q_D(const QGLFramebufferObject);
+    return d->texture;
+}
+
+/*!
+    \fn QSize QGLFramebufferObject::size() const
+
+    Returns the size of the texture attached to this framebuffer
+    object.
+*/
+QSize QGLFramebufferObject::size() const
+{
+    Q_D(const QGLFramebufferObject);
+    return d->size;
+}
+
+/*!
+    Returns the format of this framebuffer object.
+*/
+QGLFramebufferObjectFormat QGLFramebufferObject::format() const
+{
+    Q_D(const QGLFramebufferObject);
+    return d->format;
+}
+
+/*!
+    \fn QImage QGLFramebufferObject::toImage() const
+
+    Returns the contents of this framebuffer object as a QImage.
+*/
+QImage QGLFramebufferObject::toImage() const
+{
+    Q_D(const QGLFramebufferObject);
+    if (!d->valid)
+        return QImage();
+
+    // qt_gl_read_framebuffer doesn't work on a multisample FBO
+    if (format().samples() != 0) {
+        QGLFramebufferObject temp(size(), QGLFramebufferObjectFormat());
+
+        QRect rect(QPoint(0, 0), size());
+        blitFramebuffer(&temp, rect, const_cast<QGLFramebufferObject *>(this), rect);
+
+        return temp.toImage();
+    }
+
+    bool wasBound = isBound();
+    if (!wasBound)
+        const_cast<QGLFramebufferObject *>(this)->bind();
+    QImage image = qt_gl_read_framebuffer(d->size, format().internalTextureFormat() != GL_RGB, true);
+    if (!wasBound)
+        const_cast<QGLFramebufferObject *>(this)->release();
+
+    return image;
+}
+
+#if !defined(QT_OPENGL_ES_1)
+Q_GLOBAL_STATIC(QGLEngineThreadStorage<QGL2PaintEngineEx>, qt_buffer_2_engine)
+#endif
+
+#ifndef QT_OPENGL_ES_2
+Q_GLOBAL_STATIC(QGLEngineThreadStorage<QOpenGLPaintEngine>, qt_buffer_engine)
+#endif
+
+/*! \reimp */
+QPaintEngine *QGLFramebufferObject::paintEngine() const
+{
+    Q_D(const QGLFramebufferObject);
+    if (d->engine)
+        return d->engine;
+
+#if !defined(QT_OPENGL_ES_1)
+#if !defined (QT_OPENGL_ES_2)
+    if (qt_gl_preferGL2Engine()) {
+#endif
+        QPaintEngine *engine = qt_buffer_2_engine()->engine();
+        if (engine->isActive() && engine->paintDevice() != this) {
+            d->engine = new QGL2PaintEngineEx;
+            return d->engine;
+        }
+        return engine;
+#if !defined (QT_OPENGL_ES_2)
+    }
+#endif
+#endif
+
+#if !defined(QT_OPENGL_ES_2)
+    QPaintEngine *engine = qt_buffer_engine()->engine();
+    if (engine->isActive() && engine->paintDevice() != this) {
+        d->engine = new QOpenGLPaintEngine;
+        return d->engine;
+    }
+    return engine;
+#endif
+}
+
+/*!
+    \fn bool QGLFramebufferObject::bindDefault()
+    \internal
+
+    Switches rendering back to the default, windowing system provided
+    framebuffer.
+    Returns true upon success, false otherwise.
+
+    \sa bind(), release()
+*/
+bool QGLFramebufferObject::bindDefault()
+{
+    QGLContext *ctx = const_cast<QGLContext *>(QGLContext::currentContext());
+
+    if (ctx) {
+        bool ext_detected = (QGLExtensions::glExtensions() & QGLExtensions::FramebufferObject);
+        if (!ext_detected || (ext_detected && !qt_resolve_framebufferobject_extensions(ctx)))
+            return false;
+
+        ctx->d_ptr->current_fbo = ctx->d_ptr->default_fbo;
+        glBindFramebuffer(GL_FRAMEBUFFER_EXT, ctx->d_ptr->default_fbo);
+#ifdef QT_DEBUG
+    } else {
+        qWarning("QGLFramebufferObject::bindDefault() called without current context.");
+#endif
+    }
+
+    return ctx != 0;
+}
+
+/*!
+    \fn bool QGLFramebufferObject::hasOpenGLFramebufferObjects()
+
+    Returns true if the OpenGL \c{GL_EXT_framebuffer_object} extension
+    is present on this system; otherwise returns false.
+*/
+bool QGLFramebufferObject::hasOpenGLFramebufferObjects()
+{
+    return (QGLExtensions::glExtensions() & QGLExtensions::FramebufferObject);
+}
+
+/*!
+    \since 4.4
+
+    Draws the given texture, \a textureId, to the given target rectangle,
+    \a target, in OpenGL model space. The \a textureTarget should be a 2D
+    texture target.
+
+    The framebuffer object should be bound when calling this function.
+
+    Equivalent to the corresponding QGLContext::drawTexture().
+*/
+void QGLFramebufferObject::drawTexture(const QRectF &target, GLuint textureId, GLenum textureTarget)
+{
+    const_cast<QGLContext *>(QGLContext::currentContext())->drawTexture(target, textureId, textureTarget);
+}
+
+#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
+/*! \internal */
+void QGLFramebufferObject::drawTexture(const QRectF &target, QMacCompatGLuint textureId, QMacCompatGLenum textureTarget)
+{
+    const_cast<QGLContext *>(QGLContext::currentContext())->drawTexture(target, textureId, textureTarget);
+}
+#endif
+
+/*!
+    \since 4.4
+
+    Draws the given texture, \a textureId, at the given \a point in OpenGL
+    model space. The \a textureTarget should be a 2D texture target.
+
+    The framebuffer object should be bound when calling this function.
+
+    Equivalent to the corresponding QGLContext::drawTexture().
+*/
+void QGLFramebufferObject::drawTexture(const QPointF &point, GLuint textureId, GLenum textureTarget)
+{
+    const_cast<QGLContext *>(QGLContext::currentContext())->drawTexture(point, textureId, textureTarget);
+}
+
+#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
+/*! \internal */
+void QGLFramebufferObject::drawTexture(const QPointF &point, QMacCompatGLuint textureId, QMacCompatGLenum textureTarget)
+{
+    const_cast<QGLContext *>(QGLContext::currentContext())->drawTexture(point, textureId, textureTarget);
+}
+#endif
+
+/*! \reimp */
+int QGLFramebufferObject::metric(PaintDeviceMetric metric) const
+{
+    Q_D(const QGLFramebufferObject);
+
+    float dpmx = qt_defaultDpiX()*100./2.54;
+    float dpmy = qt_defaultDpiY()*100./2.54;
+    int w = d->size.width();
+    int h = d->size.height();
+    switch (metric) {
+    case PdmWidth:
+        return w;
+
+    case PdmHeight:
+        return h;
+
+    case PdmWidthMM:
+        return qRound(w * 1000 / dpmx);
+
+    case PdmHeightMM:
+        return qRound(h * 1000 / dpmy);
+
+    case PdmNumColors:
+        return 0;
+
+    case PdmDepth:
+        return 32;//d->depth;
+
+    case PdmDpiX:
+        return qRound(dpmx * 0.0254);
+
+    case PdmDpiY:
+        return qRound(dpmy * 0.0254);
+
+    case PdmPhysicalDpiX:
+        return qRound(dpmx * 0.0254);
+
+    case PdmPhysicalDpiY:
+        return qRound(dpmy * 0.0254);
+
+    default:
+        qWarning("QGLFramebufferObject::metric(), Unhandled metric type: %d.\n", metric);
+        break;
+    }
+    return 0;
+}
+
+/*!
+    \fn GLuint QGLFramebufferObject::handle() const
+
+    Returns the GL framebuffer object handle for this framebuffer
+    object (returned by the \c{glGenFrameBuffersEXT()} function). This
+    handle can be used to attach new images or buffers to the
+    framebuffer. The user is responsible for cleaning up and
+    destroying these objects.
+*/
+GLuint QGLFramebufferObject::handle() const
+{
+    Q_D(const QGLFramebufferObject);
+    return d->fbo();
+}
+
+/*! \fn int QGLFramebufferObject::devType() const
+    \internal
+*/
+
+
+/*!
+    Returns the status of the depth and stencil buffers attached to
+    this framebuffer object.
+*/
+
+QGLFramebufferObject::Attachment QGLFramebufferObject::attachment() const
+{
+    Q_D(const QGLFramebufferObject);
+    if (d->valid)
+        return d->fbo_attachment;
+    return NoAttachment;
+}
+
+/*!
+    \since 4.5
+
+    Returns true if the framebuffer object is currently bound to a context,
+    otherwise false is returned.
+*/
+
+bool QGLFramebufferObject::isBound() const
+{
+    Q_D(const QGLFramebufferObject);
+    const QGLContext *current = QGLContext::currentContext();
+    return current ? current->d_ptr->current_fbo == d->fbo() : false;
+}
+
+/*!
+    \fn bool QGLFramebufferObject::hasOpenGLFramebufferBlit()
+
+    \since 4.6
+
+    Returns true if the OpenGL \c{GL_EXT_framebuffer_blit} extension
+    is present on this system; otherwise returns false.
+
+    \sa blitFramebuffer()
+*/
+bool QGLFramebufferObject::hasOpenGLFramebufferBlit()
+{
+    return (QGLExtensions::glExtensions() & QGLExtensions::FramebufferBlit);
+}
+
+/*!
+    \since 4.6
+
+    Blits from the \a sourceRect rectangle in the \a source framebuffer
+    object to the \a targetRect rectangle in the \a target framebuffer object.
+
+    If \a source or \a target is 0, the default framebuffer will be used
+    instead of a framebuffer object as source or target respectively.
+
+    The \a buffers parameter should be a mask consisting of any combination of
+    \c GL_COLOR_BUFFER_BIT, \c GL_DEPTH_BUFFER_BIT, and
+    \c GL_STENCIL_BUFFER_BIT.  Any buffer type that is not present both
+    in the source and target buffers is ignored.
+
+    The \a sourceRect and \a targetRect rectangles may have different sizes;
+    in this case \a buffers should not contain \c GL_DEPTH_BUFFER_BIT or
+    \c GL_STENCIL_BUFFER_BIT. The \a filter parameter should be set to
+    \c GL_LINEAR or \c GL_NEAREST, and specifies whether linear or nearest
+    interpolation should be used when scaling is performed.
+
+    If \a source equals \a target a copy is performed within the same buffer.
+    Results are undefined if the source and target rectangles overlap and
+    have different sizes. The sizes must also be the same if any of the
+    framebuffer objects are multisample framebuffers.
+
+    Note that the scissor test will restrict the blit area if enabled.
+
+    This function will have no effect unless hasOpenGLFramebufferBlit() returns
+    true.
+
+    \sa hasOpenGLFramebufferBlit()
+*/
+void QGLFramebufferObject::blitFramebuffer(QGLFramebufferObject *target, const QRect &targetRect,
+                                           QGLFramebufferObject *source, const QRect &sourceRect,
+                                           GLbitfield buffers,
+                                           GLenum filter)
+{
+    if (!(QGLExtensions::glExtensions() & QGLExtensions::FramebufferBlit))
+        return;
+
+    const QGLContext *ctx = QGLContext::currentContext();
+    if (!ctx)
+        return;
+
+    const int height = ctx->device()->height();
+
+    const int sh = source ? source->height() : height;
+    const int th = target ? target->height() : height;
+
+    const int sx0 = sourceRect.left();
+    const int sx1 = sourceRect.left() + sourceRect.width();
+    const int sy0 = sh - (sourceRect.top() + sourceRect.height());
+    const int sy1 = sh - sourceRect.top();
+
+    const int tx0 = targetRect.left();
+    const int tx1 = targetRect.left() + targetRect.width();
+    const int ty0 = th - (targetRect.top() + targetRect.height());
+    const int ty1 = th - targetRect.top();
+
+    glBindFramebuffer(GL_READ_FRAMEBUFFER_EXT, source ? source->handle() : 0);
+    glBindFramebuffer(GL_DRAW_FRAMEBUFFER_EXT, target ? target->handle() : 0);
+
+    glBlitFramebufferEXT(sx0, sy0, sx1, sy1,
+                         tx0, ty0, tx1, ty1,
+                         buffers, filter);
+
+    glBindFramebuffer(GL_FRAMEBUFFER_EXT, ctx->d_ptr->current_fbo);
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/qglframebufferobject.h b/src/opengl/qglframebufferobject.h
new file mode 100644
index 0000000000..72ff27966f
--- /dev/null
+++ b/src/opengl/qglframebufferobject.h
@@ -0,0 +1,180 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QGLFRAMEBUFFEROBJECT_H
+#define QGLFRAMEBUFFEROBJECT_H
+
+#include <QtOpenGL/qgl.h>
+#include <QtGui/qpaintdevice.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(OpenGL)
+
+class QGLFramebufferObjectPrivate;
+class QGLFramebufferObjectFormat;
+
+class Q_OPENGL_EXPORT QGLFramebufferObject : public QPaintDevice
+{
+    Q_DECLARE_PRIVATE(QGLFramebufferObject)
+public:
+    enum Attachment {
+        NoAttachment,
+        CombinedDepthStencil,
+        Depth
+    };
+
+    QGLFramebufferObject(const QSize &size, GLenum target = GL_TEXTURE_2D);
+    QGLFramebufferObject(int width, int height, GLenum target = GL_TEXTURE_2D);
+#if !defined(QT_OPENGL_ES) || defined(Q_QDOC)
+    QGLFramebufferObject(const QSize &size, Attachment attachment,
+                         GLenum target = GL_TEXTURE_2D, GLenum internal_format = GL_RGBA8);
+    QGLFramebufferObject(int width, int height, Attachment attachment,
+                         GLenum target = GL_TEXTURE_2D, GLenum internal_format = GL_RGBA8);
+#else
+    QGLFramebufferObject(const QSize &size, Attachment attachment,
+                         GLenum target = GL_TEXTURE_2D, GLenum internal_format = GL_RGBA);
+    QGLFramebufferObject(int width, int height, Attachment attachment,
+                         GLenum target = GL_TEXTURE_2D, GLenum internal_format = GL_RGBA);
+#endif
+
+    QGLFramebufferObject(const QSize &size, const QGLFramebufferObjectFormat &format);
+    QGLFramebufferObject(int width, int height, const QGLFramebufferObjectFormat &format);
+
+#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
+    QGLFramebufferObject(const QSize &size, QMacCompatGLenum target = GL_TEXTURE_2D);
+    QGLFramebufferObject(int width, int height, QMacCompatGLenum target = GL_TEXTURE_2D);
+
+    QGLFramebufferObject(const QSize &size, Attachment attachment,
+                         QMacCompatGLenum target = GL_TEXTURE_2D, QMacCompatGLenum internal_format = GL_RGBA8);
+    QGLFramebufferObject(int width, int height, Attachment attachment,
+                         QMacCompatGLenum target = GL_TEXTURE_2D, QMacCompatGLenum internal_format = GL_RGBA8);
+#endif
+
+    virtual ~QGLFramebufferObject();
+
+    QGLFramebufferObjectFormat format() const;
+
+    bool isValid() const;
+    bool isBound() const;
+    bool bind();
+    bool release();
+
+    GLuint texture() const;
+    QSize size() const;
+    QImage toImage() const;
+    Attachment attachment() const;
+
+    QPaintEngine *paintEngine() const;
+    GLuint handle() const;
+
+    static bool bindDefault();
+
+    static bool hasOpenGLFramebufferObjects();
+
+    void drawTexture(const QRectF &target, GLuint textureId, GLenum textureTarget = GL_TEXTURE_2D);
+    void drawTexture(const QPointF &point, GLuint textureId, GLenum textureTarget = GL_TEXTURE_2D);
+#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
+    void drawTexture(const QRectF &target, QMacCompatGLuint textureId, QMacCompatGLenum textureTarget = GL_TEXTURE_2D);
+    void drawTexture(const QPointF &point, QMacCompatGLuint textureId, QMacCompatGLenum textureTarget = GL_TEXTURE_2D);
+#endif
+
+    static bool hasOpenGLFramebufferBlit();
+    static void blitFramebuffer(QGLFramebufferObject *target, const QRect &targetRect,
+                                QGLFramebufferObject *source, const QRect &sourceRect,
+                                GLbitfield buffers = GL_COLOR_BUFFER_BIT,
+                                GLenum filter = GL_NEAREST);
+
+protected:
+    int metric(PaintDeviceMetric metric) const;
+    int devType() const { return QInternal::FramebufferObject; }
+
+private:
+    Q_DISABLE_COPY(QGLFramebufferObject)
+    QScopedPointer<QGLFramebufferObjectPrivate> d_ptr;
+    friend class QGLPaintDevice;
+    friend class QGLFBOGLPaintDevice;
+};
+
+class QGLFramebufferObjectFormatPrivate;
+class Q_OPENGL_EXPORT QGLFramebufferObjectFormat
+{
+public:
+    QGLFramebufferObjectFormat();
+    QGLFramebufferObjectFormat(const QGLFramebufferObjectFormat &other);
+    QGLFramebufferObjectFormat &operator=(const QGLFramebufferObjectFormat &other);
+    ~QGLFramebufferObjectFormat();
+
+    void setSamples(int samples);
+    int samples() const;
+
+    void setMipmap(bool enabled);
+    bool mipmap() const;
+
+    void setAttachment(QGLFramebufferObject::Attachment attachment);
+    QGLFramebufferObject::Attachment attachment() const;
+
+    void setTextureTarget(GLenum target);
+    GLenum textureTarget() const;
+
+    void setInternalTextureFormat(GLenum internalTextureFormat);
+    GLenum internalTextureFormat() const;
+
+#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
+    void setTextureTarget(QMacCompatGLenum target);
+    void setInternalTextureFormat(QMacCompatGLenum internalTextureFormat);
+#endif
+
+    bool operator==(const QGLFramebufferObjectFormat& other) const;
+    bool operator!=(const QGLFramebufferObjectFormat& other) const;
+
+private:
+    QGLFramebufferObjectFormatPrivate *d;
+
+    void detach();
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+#endif // QGLFRAMEBUFFEROBJECT_H
diff --git a/src/opengl/qglframebufferobject_p.h b/src/opengl/qglframebufferobject_p.h
new file mode 100644
index 0000000000..4d194693ea
--- /dev/null
+++ b/src/opengl/qglframebufferobject_p.h
@@ -0,0 +1,161 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QGLFRAMEBUFFEROBJECT_P_H
+#define QGLFRAMEBUFFEROBJECT_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of the QLibrary class.  This header file may change from
+// version to version without notice, or even be removed.
+//
+// We mean it.
+//
+
+QT_BEGIN_NAMESPACE
+
+QT_BEGIN_INCLUDE_NAMESPACE
+
+#include <qglframebufferobject.h>
+#include <private/qglpaintdevice_p.h>
+#include <private/qgl_p.h>
+
+QT_END_INCLUDE_NAMESPACE
+
+#ifndef QT_OPENGL_ES
+#define DEFAULT_FORMAT GL_RGBA8
+#else
+#define DEFAULT_FORMAT GL_RGBA
+#endif
+
+class QGLFramebufferObjectFormatPrivate
+{
+public:
+    QGLFramebufferObjectFormatPrivate()
+        : ref(1),
+          samples(0),
+          attachment(QGLFramebufferObject::NoAttachment),
+          target(GL_TEXTURE_2D),
+          internal_format(DEFAULT_FORMAT),
+          mipmap(false)
+    {
+    }
+    QGLFramebufferObjectFormatPrivate
+            (const QGLFramebufferObjectFormatPrivate *other)
+        : ref(1),
+          samples(other->samples),
+          attachment(other->attachment),
+          target(other->target),
+          internal_format(other->internal_format),
+          mipmap(other->mipmap)
+    {
+    }
+    bool equals(const QGLFramebufferObjectFormatPrivate *other)
+    {
+        return samples == other->samples &&
+               attachment == other->attachment &&
+               target == other->target &&
+               internal_format == other->internal_format &&
+               mipmap == other->mipmap;
+    }
+
+    QAtomicInt ref;
+    int samples;
+    QGLFramebufferObject::Attachment attachment;
+    GLenum target;
+    GLenum internal_format;
+    uint mipmap : 1;
+};
+
+class QGLFBOGLPaintDevice : public QGLPaintDevice
+{
+public:
+    virtual QPaintEngine* paintEngine() const {return fbo->paintEngine();}
+    virtual QSize size() const {return fbo->size();}
+    virtual QGLContext* context() const;
+    virtual QGLFormat format() const {return fboFormat;}
+    virtual bool alphaRequested() const { return reqAlpha; }
+
+    void setFBO(QGLFramebufferObject* f,
+                QGLFramebufferObject::Attachment attachment);
+
+private:
+    QGLFramebufferObject* fbo;
+    QGLFormat fboFormat;
+    bool wasBound;
+    bool reqAlpha;
+};
+
+class QGLFramebufferObjectPrivate
+{
+public:
+    QGLFramebufferObjectPrivate() : fbo_guard(0), texture(0), depth_buffer(0), stencil_buffer(0)
+                                  , color_buffer(0), valid(false), engine(0) {}
+    ~QGLFramebufferObjectPrivate() {}
+
+    void init(QGLFramebufferObject *q, const QSize& sz,
+              QGLFramebufferObject::Attachment attachment,
+              GLenum internal_format, GLenum texture_target,
+              GLint samples = 0, bool mipmap = false);
+    bool checkFramebufferStatus() const;
+    QGLSharedResourceGuard fbo_guard;
+    GLuint texture;
+    GLuint depth_buffer;
+    GLuint stencil_buffer;
+    GLuint color_buffer;
+    GLenum target;
+    QSize size;
+    QGLFramebufferObjectFormat format;
+    uint valid : 1;
+    QGLFramebufferObject::Attachment fbo_attachment;
+    mutable QPaintEngine *engine;
+    QGLFBOGLPaintDevice glDevice;
+
+    inline GLuint fbo() const { return fbo_guard.id(); }
+};
+
+
+QT_END_NAMESPACE
+
+#endif // QGLFRAMEBUFFEROBJECT_P_H
diff --git a/src/opengl/qglfunctions.cpp b/src/opengl/qglfunctions.cpp
new file mode 100644
index 0000000000..be8219a07f
--- /dev/null
+++ b/src/opengl/qglfunctions.cpp
@@ -0,0 +1,3705 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qglfunctions.h"
+#include "qgl_p.h"
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \class QGLFunctions
+    \brief The QGLFunctions class provides cross-platform access to the OpenGL/ES 2.0 API.
+    \since 4.8
+    \ingroup painting-3D
+
+    OpenGL/ES 2.0 defines a subset of the OpenGL specification that is
+    common across many desktop and embedded OpenGL implementations.
+    However, it can be difficult to use the functions from that subset
+    because they need to be resolved manually on desktop systems.
+
+    QGLFunctions provides a guaranteed API that is available on all
+    OpenGL systems and takes care of function resolution on systems
+    that need it.  The recommended way to use QGLFunctions is by
+    direct inheritance:
+
+    \code
+    class MyGLWidget : public QGLWidget, protected QGLFunctions
+    {
+        Q_OBJECT
+    public:
+        MyGLWidget(QWidget *parent = 0) : QGLWidget(parent) {}
+
+    protected:
+        void initializeGL();
+        void paintGL();
+    };
+
+    void MyGLWidget::initializeGL()
+    {
+        initializeGLFunctions();
+    }
+    \endcode
+
+    The \c{paintGL()} function can then use any of the OpenGL/ES 2.0
+    functions without explicit resolution, such as glActiveTexture()
+    in the following example:
+
+    \code
+    void MyGLWidget::paintGL()
+    {
+        glActiveTexture(GL_TEXTURE1);
+        glBindTexture(GL_TEXTURE_2D, textureId);
+        ...
+    }
+    \endcode
+
+    QGLFunctions can also be used directly for ad-hoc invocation
+    of OpenGL/ES 2.0 functions on all platforms:
+
+    \code
+    QGLFunctions glFuncs(QGLContext::currentContext());
+    glFuncs.glActiveTexture(GL_TEXTURE1);
+    \endcode
+
+    QGLFunctions provides wrappers for all OpenGL/ES 2.0 functions,
+    except those like \c{glDrawArrays()}, \c{glViewport()}, and
+    \c{glBindTexture()} that don't have portability issues.
+
+    Including the header for QGLFunctions will also define all of
+    the OpenGL/ES 2.0 macro constants that are not already defined by
+    the system's OpenGL headers, such as \c{GL_TEXTURE1} above.
+
+    The hasOpenGLFeature() and openGLFeatures() functions can be used
+    to determine if the OpenGL implementation has a major OpenGL/ES 2.0
+    feature.  For example, the following checks if non power of two
+    textures are available:
+
+    \code
+    QGLFunctions funcs(QGLContext::currentContext());
+    bool npot = funcs.hasOpenGLFeature(QGLFunctions::NPOTTextures);
+    \endcode
+*/
+
+/*!
+    \enum QGLFunctions::OpenGLFeature
+    This enum defines OpenGL/ES 2.0 features that may be optional
+    on other platforms.
+
+    \value Multitexture glActiveTexture() function is available.
+    \value Shaders Shader functions are available.
+    \value Buffers Vertex and index buffer functions are available.
+    \value Framebuffers Framebuffer object functions are available.
+    \value BlendColor glBlendColor() is available.
+    \value BlendEquation glBlendEquation() is available.
+    \value BlendEquationSeparate glBlendEquationSeparate() is available.
+    \value BlendFuncSeparate glBlendFuncSeparate() is available.
+    \value BlendSubtract Blend subtract mode is available.
+    \value CompressedTextures Compressed texture functions are available.
+    \value Multisample glSampleCoverage() function is available.
+    \value StencilSeparate Separate stencil functions are available.
+    \value NPOTTextures Non power of two textures are available.
+*/
+
+// Hidden private fields for additional extension data.
+struct QGLFunctionsPrivateEx : public QGLFunctionsPrivate
+{
+    QGLFunctionsPrivateEx(const QGLContext *context = 0)
+        : QGLFunctionsPrivate(context)
+        , m_features(-1) {}
+
+    int m_features;
+};
+
+#if QT_VERSION >= 0x040800
+Q_GLOBAL_STATIC(QGLContextGroupResource<QGLFunctionsPrivateEx>, qt_gl_functions_resource)
+#else
+static void qt_gl_functions_free(void *data)
+{
+    delete reinterpret_cast<QGLFunctionsPrivateEx *>(data);
+}
+
+Q_GLOBAL_STATIC_WITH_ARGS(QGLContextResource, qt_gl_functions_resource, (qt_gl_functions_free))
+#endif
+static QGLFunctionsPrivateEx *qt_gl_functions(const QGLContext *context = 0)
+{
+    if (!context)
+        context = QGLContext::currentContext();
+    Q_ASSERT(context);
+    QGLFunctionsPrivateEx *funcs =
+        reinterpret_cast<QGLFunctionsPrivateEx *>
+            (qt_gl_functions_resource()->value(context));
+#if QT_VERSION < 0x040800
+    if (!funcs) {
+        funcs = new QGLFunctionsPrivateEx();
+        qt_gl_functions_resource()->insert(context, funcs);
+    }
+#endif
+    return funcs;
+}
+
+/*!
+    Constructs a default function resolver.  The resolver cannot
+    be used until initializeGLFunctions() is called to specify
+    the context.
+
+    \sa initializeGLFunctions()
+*/
+QGLFunctions::QGLFunctions()
+    : d_ptr(0)
+{
+}
+
+/*!
+    Constructs a function resolver for \a context.  If \a context
+    is null, then the resolver will be created for the current QGLContext.
+
+    An object constructed in this way can only be used with \a context
+    and other contexts that share with it.  Use initializeGLFunctions()
+    to change the object's context association.
+
+    \sa initializeGLFunctions()
+*/
+QGLFunctions::QGLFunctions(const QGLContext *context)
+    : d_ptr(qt_gl_functions(context))
+{
+}
+
+/*!
+    \fn QGLFunctions::~QGLFunctions()
+
+    Destroys this function resolver.
+*/
+
+static int qt_gl_resolve_features()
+{
+#if defined(QT_OPENGL_ES_2)
+    return QGLFunctions::Multitexture |
+           QGLFunctions::Shaders |
+           QGLFunctions::Buffers |
+           QGLFunctions::Framebuffers |
+           QGLFunctions::BlendColor |
+           QGLFunctions::BlendEquation |
+           QGLFunctions::BlendEquationSeparate |
+           QGLFunctions::BlendFuncSeparate |
+           QGLFunctions::BlendSubtract |
+           QGLFunctions::CompressedTextures |
+           QGLFunctions::Multisample |
+           QGLFunctions::StencilSeparate |
+           QGLFunctions::NPOTTextures;
+#elif defined(QT_OPENGL_ES)
+    int features = QGLFunctions::Multitexture |
+                   QGLFunctions::Buffers |
+                   QGLFunctions::CompressedTextures |
+                   QGLFunctions::Multisample;
+    QGLExtensionMatcher extensions;
+    if (extensions.match("GL_OES_framebuffer_object"))
+        features |= QGLFunctions::Framebuffers;
+    if (extensions.match("GL_OES_blend_equation_separate"))
+        features |= QGLFunctions::BlendEquationSeparate;
+    if (extensions.match("GL_OES_blend_func_separate"))
+        features |= QGLFunctions::BlendFuncSeparate;
+    if (extensions.match("GL_OES_blend_subtract"))
+        features |= QGLFunctions::BlendSubtract;
+    if (extensions.match("GL_OES_texture_npot"))
+        features |= QGLFunctions::NPOTTextures;
+    return features;
+#else
+    int features = 0;
+    QGLFormat::OpenGLVersionFlags versions = QGLFormat::openGLVersionFlags();
+    QGLExtensionMatcher extensions;
+
+    // Recognize features by extension name.
+    if (extensions.match("GL_ARB_multitexture"))
+        features |= QGLFunctions::Multitexture;
+    if (extensions.match("GL_ARB_shader_objects"))
+        features |= QGLFunctions::Shaders;
+    if (extensions.match("GL_EXT_framebuffer_object") ||
+            extensions.match("GL_ARB_framebuffer_object"))
+        features |= QGLFunctions::Framebuffers;
+    if (extensions.match("GL_EXT_blend_color"))
+        features |= QGLFunctions::BlendColor;
+    if (extensions.match("GL_EXT_blend_equation_separate"))
+        features |= QGLFunctions::BlendEquationSeparate;
+    if (extensions.match("GL_EXT_blend_func_separate"))
+        features |= QGLFunctions::BlendFuncSeparate;
+    if (extensions.match("GL_EXT_blend_subtract"))
+        features |= QGLFunctions::BlendSubtract;
+    if (extensions.match("GL_ARB_texture_compression"))
+        features |= QGLFunctions::CompressedTextures;
+    if (extensions.match("GL_ARB_multisample"))
+        features |= QGLFunctions::Multisample;
+    if (extensions.match("GL_ARB_texture_non_power_of_two"))
+        features |= QGLFunctions::NPOTTextures;
+
+    // Recognize features by minimum OpenGL version.
+    if (versions & QGLFormat::OpenGL_Version_1_2) {
+        features |= QGLFunctions::BlendColor |
+                    QGLFunctions::BlendEquation;
+    }
+    if (versions & QGLFormat::OpenGL_Version_1_3) {
+        features |= QGLFunctions::Multitexture |
+                    QGLFunctions::CompressedTextures |
+                    QGLFunctions::Multisample;
+    }
+    if (versions & QGLFormat::OpenGL_Version_1_4)
+        features |= QGLFunctions::BlendFuncSeparate;
+    if (versions & QGLFormat::OpenGL_Version_1_5)
+        features |= QGLFunctions::Buffers;
+    if (versions & QGLFormat::OpenGL_Version_2_0) {
+        features |= QGLFunctions::Shaders |
+                    QGLFunctions::StencilSeparate |
+                    QGLFunctions::BlendEquationSeparate |
+                    QGLFunctions::NPOTTextures;
+    }
+    return features;
+#endif
+}
+
+/*!
+    Returns the set of features that are present on this system's
+    OpenGL implementation.
+
+    It is assumed that the QGLContext associated with this function
+    resolver is current.
+
+    \sa hasOpenGLFeature()
+*/
+QGLFunctions::OpenGLFeatures QGLFunctions::openGLFeatures() const
+{
+    QGLFunctionsPrivateEx *d = static_cast<QGLFunctionsPrivateEx *>(d_ptr);
+    if (!d)
+        return 0;
+    if (d->m_features == -1)
+        d->m_features = qt_gl_resolve_features();
+    return QGLFunctions::OpenGLFeatures(d->m_features);
+}
+
+/*!
+    Returns true if \a feature is present on this system's OpenGL
+    implementation; false otherwise.
+
+    It is assumed that the QGLContext associated with this function
+    resolver is current.
+
+    \sa openGLFeatures()
+*/
+bool QGLFunctions::hasOpenGLFeature(QGLFunctions::OpenGLFeature feature) const
+{
+    QGLFunctionsPrivateEx *d = static_cast<QGLFunctionsPrivateEx *>(d_ptr);
+    if (!d)
+        return false;
+    if (d->m_features == -1)
+        d->m_features = qt_gl_resolve_features();
+    return (d->m_features & int(feature)) != 0;
+}
+
+/*!
+    Initializes GL function resolution for \a context.  If \a context
+    is null, then the current QGLContext will be used.
+
+    After calling this function, the QGLFunctions object can only be
+    used with \a context and other contexts that share with it.
+    Call initializeGLFunctions() again to change the object's context
+    association.
+*/
+void QGLFunctions::initializeGLFunctions(const QGLContext *context)
+{
+    d_ptr = qt_gl_functions(context);
+}
+
+/*!
+    \fn void QGLFunctions::glActiveTexture(GLenum texture)
+
+    Convenience function that calls glActiveTexture(\a texture).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glActiveTexture.xml}{glActiveTexture()}.
+*/
+
+/*!
+    \fn void QGLFunctions::glAttachShader(GLuint program, GLuint shader)
+
+    Convenience function that calls glAttachShader(\a program, \a shader).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glAttachShader.xml}{glAttachShader()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glBindAttribLocation(GLuint program, GLuint index, const char* name)
+
+    Convenience function that calls glBindAttribLocation(\a program, \a index, \a name).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glBindAttribLocation.xml}{glBindAttribLocation()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glBindBuffer(GLenum target, GLuint buffer)
+
+    Convenience function that calls glBindBuffer(\a target, \a buffer).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glBindBuffer.xml}{glBindBuffer()}.
+*/
+
+/*!
+    \fn void QGLFunctions::glBindFramebuffer(GLenum target, GLuint framebuffer)
+
+    Convenience function that calls glBindFramebuffer(\a target, \a framebuffer).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glBindFramebuffer.xml}{glBindFramebuffer()}.
+*/
+
+/*!
+    \fn void QGLFunctions::glBindRenderbuffer(GLenum target, GLuint renderbuffer)
+
+    Convenience function that calls glBindRenderbuffer(\a target, \a renderbuffer).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glBindRenderbuffer.xml}{glBindRenderbuffer()}.
+*/
+
+/*!
+    \fn void QGLFunctions::glBlendColor(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha)
+
+    Convenience function that calls glBlendColor(\a red, \a green, \a blue, \a alpha).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glBlendColor.xml}{glBlendColor()}.
+*/
+
+/*!
+    \fn void QGLFunctions::glBlendEquation(GLenum mode)
+
+    Convenience function that calls glBlendEquation(\a mode).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glBlendEquation.xml}{glBlendEquation()}.
+*/
+
+/*!
+    \fn void QGLFunctions::glBlendEquationSeparate(GLenum modeRGB, GLenum modeAlpha)
+
+    Convenience function that calls glBlendEquationSeparate(\a modeRGB, \a modeAlpha).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glBlendEquationSeparate.xml}{glBlendEquationSeparate()}.
+*/
+
+/*!
+    \fn void QGLFunctions::glBlendFuncSeparate(GLenum srcRGB, GLenum dstRGB, GLenum srcAlpha, GLenum dstAlpha)
+
+    Convenience function that calls glBlendFuncSeparate(\a srcRGB, \a dstRGB, \a srcAlpha, \a dstAlpha).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glBlendFuncSeparate.xml}{glBlendFuncSeparate()}.
+*/
+
+/*!
+    \fn void QGLFunctions::glBufferData(GLenum target, qgl_GLsizeiptr size, const void* data, GLenum usage)
+
+    Convenience function that calls glBufferData(\a target, \a size, \a data, \a usage).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glBufferData.xml}{glBufferData()}.
+*/
+
+/*!
+    \fn void QGLFunctions::glBufferSubData(GLenum target, qgl_GLintptr offset, qgl_GLsizeiptr size, const void* data)
+
+    Convenience function that calls glBufferSubData(\a target, \a offset, \a size, \a data).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glBufferSubData.xml}{glBufferSubData()}.
+*/
+
+/*!
+    \fn GLenum QGLFunctions::glCheckFramebufferStatus(GLenum target)
+
+    Convenience function that calls glCheckFramebufferStatus(\a target).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glCheckFramebufferStatus.xml}{glCheckFramebufferStatus()}.
+*/
+
+/*!
+    \fn void QGLFunctions::glClearDepthf(GLclampf depth)
+
+    Convenience function that calls glClearDepth(\a depth) on
+    desktop OpenGL systems and glClearDepthf(\a depth) on
+    embedded OpenGL/ES systems.
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glClearDepthf.xml}{glClearDepthf()}.
+*/
+
+/*!
+    \fn void QGLFunctions::glCompileShader(GLuint shader)
+
+    Convenience function that calls glCompileShader(\a shader).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glCompileShader.xml}{glCompileShader()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glCompressedTexImage2D(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLint border, GLsizei imageSize, const void* data)
+
+    Convenience function that calls glCompressedTexImage2D(\a target, \a level, \a internalformat, \a width, \a height, \a border, \a imageSize, \a data).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glCompressedTexImage2D.xml}{glCompressedTexImage2D()}.
+*/
+
+/*!
+    \fn void QGLFunctions::glCompressedTexSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const void* data)
+
+    Convenience function that calls glCompressedTexSubImage2D(\a target, \a level, \a xoffset, \a yoffset, \a width, \a height, \a format, \a imageSize, \a data).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glCompressedTexSubImage2D.xml}{glCompressedTexSubImage2D()}.
+*/
+
+/*!
+    \fn GLuint QGLFunctions::glCreateProgram()
+
+    Convenience function that calls glCreateProgram().
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glCreateProgram.xml}{glCreateProgram()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn GLuint QGLFunctions::glCreateShader(GLenum type)
+
+    Convenience function that calls glCreateShader(\a type).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glCreateShader.xml}{glCreateShader()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glDeleteBuffers(GLsizei n, const GLuint* buffers)
+
+    Convenience function that calls glDeleteBuffers(\a n, \a buffers).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glDeleteBuffers.xml}{glDeleteBuffers()}.
+*/
+
+/*!
+    \fn void QGLFunctions::glDeleteFramebuffers(GLsizei n, const GLuint* framebuffers)
+
+    Convenience function that calls glDeleteFramebuffers(\a n, \a framebuffers).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glDeleteFramebuffers.xml}{glDeleteFramebuffers()}.
+*/
+
+/*!
+    \fn void QGLFunctions::glDeleteProgram(GLuint program)
+
+    Convenience function that calls glDeleteProgram(\a program).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glDeleteProgram.xml}{glDeleteProgram()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glDeleteRenderbuffers(GLsizei n, const GLuint* renderbuffers)
+
+    Convenience function that calls glDeleteRenderbuffers(\a n, \a renderbuffers).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glDeleteRenderbuffers.xml}{glDeleteRenderbuffers()}.
+*/
+
+/*!
+    \fn void QGLFunctions::glDeleteShader(GLuint shader)
+
+    Convenience function that calls glDeleteShader(\a shader).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glDeleteShader.xml}{glDeleteShader()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glDepthRangef(GLclampf zNear, GLclampf zFar)
+
+    Convenience function that calls glDepthRange(\a zNear, \a zFar) on
+    desktop OpenGL systems and glDepthRangef(\a zNear, \a zFar) on
+    embedded OpenGL/ES systems.
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glDepthRangef.xml}{glDepthRangef()}.
+*/
+
+/*!
+    \fn void QGLFunctions::glDetachShader(GLuint program, GLuint shader)
+
+    Convenience function that calls glDetachShader(\a program, \a shader).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glDetachShader.xml}{glDetachShader()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glDisableVertexAttribArray(GLuint index)
+
+    Convenience function that calls glDisableVertexAttribArray(\a index).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glDisableVertexAttribArray.xml}{glDisableVertexAttribArray()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glEnableVertexAttribArray(GLuint index)
+
+    Convenience function that calls glEnableVertexAttribArray(\a index).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glEnableVertexAttribArray.xml}{glEnableVertexAttribArray()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glFramebufferRenderbuffer(GLenum target, GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer)
+
+    Convenience function that calls glFramebufferRenderbuffer(\a target, \a attachment, \a renderbuffertarget, \a renderbuffer).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glFramebufferRenderbuffer.xml}{glFramebufferRenderbuffer()}.
+*/
+
+/*!
+    \fn void QGLFunctions::glFramebufferTexture2D(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level)
+
+    Convenience function that calls glFramebufferTexture2D(\a target, \a attachment, \a textarget, \a texture, \a level).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glFramebufferTexture2D.xml}{glFramebufferTexture2D()}.
+*/
+
+/*!
+    \fn void QGLFunctions::glGenBuffers(GLsizei n, GLuint* buffers)
+
+    Convenience function that calls glGenBuffers(\a n, \a buffers).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glGenBuffers.xml}{glGenBuffers()}.
+*/
+
+/*!
+    \fn void QGLFunctions::glGenerateMipmap(GLenum target)
+
+    Convenience function that calls glGenerateMipmap(\a target).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glGenerateMipmap.xml}{glGenerateMipmap()}.
+*/
+
+/*!
+    \fn void QGLFunctions::glGenFramebuffers(GLsizei n, GLuint* framebuffers)
+
+    Convenience function that calls glGenFramebuffers(\a n, \a framebuffers).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glGenFramebuffers.xml}{glGenFramebuffers()}.
+*/
+
+/*!
+    \fn void QGLFunctions::glGenRenderbuffers(GLsizei n, GLuint* renderbuffers)
+
+    Convenience function that calls glGenRenderbuffers(\a n, \a renderbuffers).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glGenRenderbuffers.xml}{glGenRenderbuffers()}.
+*/
+
+/*!
+    \fn void QGLFunctions::glGetActiveAttrib(GLuint program, GLuint index, GLsizei bufsize, GLsizei* length, GLint* size, GLenum* type, char* name)
+
+    Convenience function that calls glGetActiveAttrib(\a program, \a index, \a bufsize, \a length, \a size, \a type, \a name).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glGetActiveAttrib.xml}{glGetActiveAttrib()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glGetActiveUniform(GLuint program, GLuint index, GLsizei bufsize, GLsizei* length, GLint* size, GLenum* type, char* name)
+
+    Convenience function that calls glGetActiveUniform(\a program, \a index, \a bufsize, \a length, \a size, \a type, \a name).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glGetActiveUniform.xml}{glGetActiveUniform()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glGetAttachedShaders(GLuint program, GLsizei maxcount, GLsizei* count, GLuint* shaders)
+
+    Convenience function that calls glGetAttachedShaders(\a program, \a maxcount, \a count, \a shaders).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glGetAttachedShaders.xml}{glGetAttachedShaders()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn int QGLFunctions::glGetAttribLocation(GLuint program, const char* name)
+
+    Convenience function that calls glGetAttribLocation(\a program, \a name).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glGetAttribLocation.xml}{glGetAttribLocation()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glGetBufferParameteriv(GLenum target, GLenum pname, GLint* params)
+
+    Convenience function that calls glGetBufferParameteriv(\a target, \a pname, \a params).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glGetBufferParameteriv.xml}{glGetBufferParameteriv()}.
+*/
+
+/*!
+    \fn void QGLFunctions::glGetFramebufferAttachmentParameteriv(GLenum target, GLenum attachment, GLenum pname, GLint* params)
+
+    Convenience function that calls glGetFramebufferAttachmentParameteriv(\a target, \a attachment, \a pname, \a params).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glGetFramebufferAttachmentParameteriv.xml}{glGetFramebufferAttachmentParameteriv()}.
+*/
+
+/*!
+    \fn void QGLFunctions::glGetProgramiv(GLuint program, GLenum pname, GLint* params)
+
+    Convenience function that calls glGetProgramiv(\a program, \a pname, \a params).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glGetProgramiv.xml}{glGetProgramiv()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glGetProgramInfoLog(GLuint program, GLsizei bufsize, GLsizei* length, char* infolog)
+
+    Convenience function that calls glGetProgramInfoLog(\a program, \a bufsize, \a length, \a infolog).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glGetProgramInfoLog.xml}{glGetProgramInfoLog()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glGetRenderbufferParameteriv(GLenum target, GLenum pname, GLint* params)
+
+    Convenience function that calls glGetRenderbufferParameteriv(\a target, \a pname, \a params).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glGetRenderbufferParameteriv.xml}{glGetRenderbufferParameteriv()}.
+*/
+
+/*!
+    \fn void QGLFunctions::glGetShaderiv(GLuint shader, GLenum pname, GLint* params)
+
+    Convenience function that calls glGetShaderiv(\a shader, \a pname, \a params).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glGetShaderiv.xml}{glGetShaderiv()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glGetShaderInfoLog(GLuint shader, GLsizei bufsize, GLsizei* length, char* infolog)
+
+    Convenience function that calls glGetShaderInfoLog(\a shader, \a bufsize, \a length, \a infolog).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glGetShaderInfoLog.xml}{glGetShaderInfoLog()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glGetShaderPrecisionFormat(GLenum shadertype, GLenum precisiontype, GLint* range, GLint* precision)
+
+    Convenience function that calls glGetShaderPrecisionFormat(\a shadertype, \a precisiontype, \a range, \a precision).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glGetShaderPrecisionFormat.xml}{glGetShaderPrecisionFormat()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glGetShaderSource(GLuint shader, GLsizei bufsize, GLsizei* length, char* source)
+
+    Convenience function that calls glGetShaderSource(\a shader, \a bufsize, \a length, \a source).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glGetShaderSource.xml}{glGetShaderSource()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glGetUniformfv(GLuint program, GLint location, GLfloat* params)
+
+    Convenience function that calls glGetUniformfv(\a program, \a location, \a params).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glGetUniformfv.xml}{glGetUniformfv()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glGetUniformiv(GLuint program, GLint location, GLint* params)
+
+    Convenience function that calls glGetUniformiv(\a program, \a location, \a params).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glGetUniformiv.xml}{glGetUniformiv()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn int QGLFunctions::glGetUniformLocation(GLuint program, const char* name)
+
+    Convenience function that calls glGetUniformLocation(\a program, \a name).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glGetUniformLocation.xml}{glGetUniformLocation()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glGetVertexAttribfv(GLuint index, GLenum pname, GLfloat* params)
+
+    Convenience function that calls glGetVertexAttribfv(\a index, \a pname, \a params).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glGetVertexAttribfv.xml}{glGetVertexAttribfv()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glGetVertexAttribiv(GLuint index, GLenum pname, GLint* params)
+
+    Convenience function that calls glGetVertexAttribiv(\a index, \a pname, \a params).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glGetVertexAttribiv.xml}{glGetVertexAttribiv()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glGetVertexAttribPointerv(GLuint index, GLenum pname, void** pointer)
+
+    Convenience function that calls glGetVertexAttribPointerv(\a index, \a pname, \a pointer).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glGetVertexAttribPointerv.xml}{glGetVertexAttribPointerv()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn GLboolean QGLFunctions::glIsBuffer(GLuint buffer)
+
+    Convenience function that calls glIsBuffer(\a buffer).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glIsBuffer.xml}{glIsBuffer()}.
+*/
+
+/*!
+    \fn GLboolean QGLFunctions::glIsFramebuffer(GLuint framebuffer)
+
+    Convenience function that calls glIsFramebuffer(\a framebuffer).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glIsFramebuffer.xml}{glIsFramebuffer()}.
+*/
+
+/*!
+    \fn GLboolean QGLFunctions::glIsProgram(GLuint program)
+
+    Convenience function that calls glIsProgram(\a program).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glIsProgram.xml}{glIsProgram()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn GLboolean QGLFunctions::glIsRenderbuffer(GLuint renderbuffer)
+
+    Convenience function that calls glIsRenderbuffer(\a renderbuffer).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glIsRenderbuffer.xml}{glIsRenderbuffer()}.
+*/
+
+/*!
+    \fn GLboolean QGLFunctions::glIsShader(GLuint shader)
+
+    Convenience function that calls glIsShader(\a shader).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glIsShader.xml}{glIsShader()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glLinkProgram(GLuint program)
+
+    Convenience function that calls glLinkProgram(\a program).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glLinkProgram.xml}{glLinkProgram()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glReleaseShaderCompiler()
+
+    Convenience function that calls glReleaseShaderCompiler().
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glReleaseShaderCompiler.xml}{glReleaseShaderCompiler()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glRenderbufferStorage(GLenum target, GLenum internalformat, GLsizei width, GLsizei height)
+
+    Convenience function that calls glRenderbufferStorage(\a target, \a internalformat, \a width, \a height).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glRenderbufferStorage.xml}{glRenderbufferStorage()}.
+*/
+
+/*!
+    \fn void QGLFunctions::glSampleCoverage(GLclampf value, GLboolean invert)
+
+    Convenience function that calls glSampleCoverage(\a value, \a invert).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glSampleCoverage.xml}{glSampleCoverage()}.
+*/
+
+/*!
+    \fn void QGLFunctions::glShaderBinary(GLint n, const GLuint* shaders, GLenum binaryformat, const void* binary, GLint length)
+
+    Convenience function that calls glShaderBinary(\a n, \a shaders, \a binaryformat, \a binary, \a length).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glShaderBinary.xml}{glShaderBinary()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glShaderSource(GLuint shader, GLsizei count, const char** string, const GLint* length)
+
+    Convenience function that calls glShaderSource(\a shader, \a count, \a string, \a length).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glShaderSource.xml}{glShaderSource()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glStencilFuncSeparate(GLenum face, GLenum func, GLint ref, GLuint mask)
+
+    Convenience function that calls glStencilFuncSeparate(\a face, \a func, \a ref, \a mask).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glStencilFuncSeparate.xml}{glStencilFuncSeparate()}.
+*/
+
+/*!
+    \fn void QGLFunctions::glStencilMaskSeparate(GLenum face, GLuint mask)
+
+    Convenience function that calls glStencilMaskSeparate(\a face, \a mask).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glStencilMaskSeparate.xml}{glStencilMaskSeparate()}.
+*/
+
+/*!
+    \fn void QGLFunctions::glStencilOpSeparate(GLenum face, GLenum fail, GLenum zfail, GLenum zpass)
+
+    Convenience function that calls glStencilOpSeparate(\a face, \a fail, \a zfail, \a zpass).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glStencilOpSeparate.xml}{glStencilOpSeparate()}.
+*/
+
+/*!
+    \fn void QGLFunctions::glUniform1f(GLint location, GLfloat x)
+
+    Convenience function that calls glUniform1f(\a location, \a x).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glUniform1f.xml}{glUniform1f()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glUniform1fv(GLint location, GLsizei count, const GLfloat* v)
+
+    Convenience function that calls glUniform1fv(\a location, \a count, \a v).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glUniform1fv.xml}{glUniform1fv()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glUniform1i(GLint location, GLint x)
+
+    Convenience function that calls glUniform1i(\a location, \a x).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glUniform1i.xml}{glUniform1i()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glUniform1iv(GLint location, GLsizei count, const GLint* v)
+
+    Convenience function that calls glUniform1iv(\a location, \a count, \a v).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glUniform1iv.xml}{glUniform1iv()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glUniform2f(GLint location, GLfloat x, GLfloat y)
+
+    Convenience function that calls glUniform2f(\a location, \a x, \a y).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glUniform2f.xml}{glUniform2f()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glUniform2fv(GLint location, GLsizei count, const GLfloat* v)
+
+    Convenience function that calls glUniform2fv(\a location, \a count, \a v).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glUniform2fv.xml}{glUniform2fv()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glUniform2i(GLint location, GLint x, GLint y)
+
+    Convenience function that calls glUniform2i(\a location, \a x, \a y).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glUniform2i.xml}{glUniform2i()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glUniform2iv(GLint location, GLsizei count, const GLint* v)
+
+    Convenience function that calls glUniform2iv(\a location, \a count, \a v).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glUniform2iv.xml}{glUniform2iv()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glUniform3f(GLint location, GLfloat x, GLfloat y, GLfloat z)
+
+    Convenience function that calls glUniform3f(\a location, \a x, \a y, \a z).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glUniform3f.xml}{glUniform3f()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glUniform3fv(GLint location, GLsizei count, const GLfloat* v)
+
+    Convenience function that calls glUniform3fv(\a location, \a count, \a v).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glUniform3fv.xml}{glUniform3fv()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glUniform3i(GLint location, GLint x, GLint y, GLint z)
+
+    Convenience function that calls glUniform3i(\a location, \a x, \a y, \a z).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glUniform3i.xml}{glUniform3i()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glUniform3iv(GLint location, GLsizei count, const GLint* v)
+
+    Convenience function that calls glUniform3iv(\a location, \a count, \a v).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glUniform3iv.xml}{glUniform3iv()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glUniform4f(GLint location, GLfloat x, GLfloat y, GLfloat z, GLfloat w)
+
+    Convenience function that calls glUniform4f(\a location, \a x, \a y, \a z, \a w).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glUniform4f.xml}{glUniform4f()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glUniform4fv(GLint location, GLsizei count, const GLfloat* v)
+
+    Convenience function that calls glUniform4fv(\a location, \a count, \a v).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glUniform4fv.xml}{glUniform4fv()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glUniform4i(GLint location, GLint x, GLint y, GLint z, GLint w)
+
+    Convenience function that calls glUniform4i(\a location, \a x, \a y, \a z, \a w).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glUniform4i.xml}{glUniform4i()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glUniform4iv(GLint location, GLsizei count, const GLint* v)
+
+    Convenience function that calls glUniform4iv(\a location, \a count, \a v).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glUniform4iv.xml}{glUniform4iv()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glUniformMatrix2fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value)
+
+    Convenience function that calls glUniformMatrix2fv(\a location, \a count, \a transpose, \a value).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glUniformMatrix2fv.xml}{glUniformMatrix2fv()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glUniformMatrix3fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value)
+
+    Convenience function that calls glUniformMatrix3fv(\a location, \a count, \a transpose, \a value).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glUniformMatrix3fv.xml}{glUniformMatrix3fv()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glUniformMatrix4fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value)
+
+    Convenience function that calls glUniformMatrix4fv(\a location, \a count, \a transpose, \a value).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glUniformMatrix4fv.xml}{glUniformMatrix4fv()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glUseProgram(GLuint program)
+
+    Convenience function that calls glUseProgram(\a program).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glUseProgram.xml}{glUseProgram()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glValidateProgram(GLuint program)
+
+    Convenience function that calls glValidateProgram(\a program).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glValidateProgram.xml}{glValidateProgram()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glVertexAttrib1f(GLuint indx, GLfloat x)
+
+    Convenience function that calls glVertexAttrib1f(\a indx, \a x).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glVertexAttrib1f.xml}{glVertexAttrib1f()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glVertexAttrib1fv(GLuint indx, const GLfloat* values)
+
+    Convenience function that calls glVertexAttrib1fv(\a indx, \a values).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glVertexAttrib1fv.xml}{glVertexAttrib1fv()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glVertexAttrib2f(GLuint indx, GLfloat x, GLfloat y)
+
+    Convenience function that calls glVertexAttrib2f(\a indx, \a x, \a y).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glVertexAttrib2f.xml}{glVertexAttrib2f()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glVertexAttrib2fv(GLuint indx, const GLfloat* values)
+
+    Convenience function that calls glVertexAttrib2fv(\a indx, \a values).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glVertexAttrib2fv.xml}{glVertexAttrib2fv()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glVertexAttrib3f(GLuint indx, GLfloat x, GLfloat y, GLfloat z)
+
+    Convenience function that calls glVertexAttrib3f(\a indx, \a x, \a y, \a z).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glVertexAttrib3f.xml}{glVertexAttrib3f()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glVertexAttrib3fv(GLuint indx, const GLfloat* values)
+
+    Convenience function that calls glVertexAttrib3fv(\a indx, \a values).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glVertexAttrib3fv.xml}{glVertexAttrib3fv()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glVertexAttrib4f(GLuint indx, GLfloat x, GLfloat y, GLfloat z, GLfloat w)
+
+    Convenience function that calls glVertexAttrib4f(\a indx, \a x, \a y, \a z, \a w).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glVertexAttrib4f.xml}{glVertexAttrib4f()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glVertexAttrib4fv(GLuint indx, const GLfloat* values)
+
+    Convenience function that calls glVertexAttrib4fv(\a indx, \a values).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glVertexAttrib4fv.xml}{glVertexAttrib4fv()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+/*!
+    \fn void QGLFunctions::glVertexAttribPointer(GLuint indx, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const void* ptr)
+
+    Convenience function that calls glVertexAttribPointer(\a indx, \a size, \a type, \a normalized, \a stride, \a ptr).
+
+    For more information, see the OpenGL/ES 2.0 documentation for
+    \l{http://www.khronos.org/opengles/sdk/docs/man/glVertexAttribPointer.xml}{glVertexAttribPointer()}.
+
+    This convenience function will do nothing on OpenGL/ES 1.x systems.
+*/
+
+#ifndef QT_OPENGL_ES_2
+
+static void qglfResolveActiveTexture(GLenum texture)
+{
+    typedef void (QGLF_APIENTRYP type_glActiveTexture)(GLenum texture);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->activeTexture = (type_glActiveTexture)
+        context->getProcAddress(QLatin1String("glActiveTexture"));
+    if (!funcs->activeTexture) {
+        funcs->activeTexture = (type_glActiveTexture)
+            context->getProcAddress(QLatin1String("glActiveTextureARB"));
+    }
+
+    if (funcs->activeTexture)
+        funcs->activeTexture(texture);
+    else
+        funcs->activeTexture = qglfResolveActiveTexture;
+}
+
+static void qglfResolveAttachShader(GLuint program, GLuint shader)
+{
+    typedef void (QGLF_APIENTRYP type_glAttachShader)(GLuint program, GLuint shader);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->attachShader = (type_glAttachShader)
+        context->getProcAddress(QLatin1String("glAttachShader"));
+    if (!funcs->attachShader) {
+        funcs->attachShader = (type_glAttachShader)
+            context->getProcAddress(QLatin1String("glAttachObjectARB"));
+    }
+
+    if (funcs->attachShader)
+        funcs->attachShader(program, shader);
+    else
+        funcs->attachShader = qglfResolveAttachShader;
+}
+
+static void qglfResolveBindAttribLocation(GLuint program, GLuint index, const char* name)
+{
+    typedef void (QGLF_APIENTRYP type_glBindAttribLocation)(GLuint program, GLuint index, const char* name);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->bindAttribLocation = (type_glBindAttribLocation)
+        context->getProcAddress(QLatin1String("glBindAttribLocation"));
+    if (!funcs->bindAttribLocation) {
+        funcs->bindAttribLocation = (type_glBindAttribLocation)
+            context->getProcAddress(QLatin1String("glBindAttribLocationARB"));
+    }
+
+    if (funcs->bindAttribLocation)
+        funcs->bindAttribLocation(program, index, name);
+    else
+        funcs->bindAttribLocation = qglfResolveBindAttribLocation;
+}
+
+static void qglfResolveBindBuffer(GLenum target, GLuint buffer)
+{
+    typedef void (QGLF_APIENTRYP type_glBindBuffer)(GLenum target, GLuint buffer);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->bindBuffer = (type_glBindBuffer)
+        context->getProcAddress(QLatin1String("glBindBuffer"));
+#ifdef QT_OPENGL_ES
+    if (!funcs->bindBuffer) {
+        funcs->bindBuffer = (type_glBindBuffer)
+            context->getProcAddress(QLatin1String("glBindBufferOES"));
+    }
+#endif
+    if (!funcs->bindBuffer) {
+        funcs->bindBuffer = (type_glBindBuffer)
+            context->getProcAddress(QLatin1String("glBindBufferEXT"));
+    }
+    if (!funcs->bindBuffer) {
+        funcs->bindBuffer = (type_glBindBuffer)
+            context->getProcAddress(QLatin1String("glBindBufferARB"));
+    }
+
+    if (funcs->bindBuffer)
+        funcs->bindBuffer(target, buffer);
+    else
+        funcs->bindBuffer = qglfResolveBindBuffer;
+}
+
+static void qglfResolveBindFramebuffer(GLenum target, GLuint framebuffer)
+{
+    typedef void (QGLF_APIENTRYP type_glBindFramebuffer)(GLenum target, GLuint framebuffer);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->bindFramebuffer = (type_glBindFramebuffer)
+        context->getProcAddress(QLatin1String("glBindFramebuffer"));
+#ifdef QT_OPENGL_ES
+    if (!funcs->bindFramebuffer) {
+        funcs->bindFramebuffer = (type_glBindFramebuffer)
+            context->getProcAddress(QLatin1String("glBindFramebufferOES"));
+    }
+#endif
+    if (!funcs->bindFramebuffer) {
+        funcs->bindFramebuffer = (type_glBindFramebuffer)
+            context->getProcAddress(QLatin1String("glBindFramebufferEXT"));
+    }
+    if (!funcs->bindFramebuffer) {
+        funcs->bindFramebuffer = (type_glBindFramebuffer)
+            context->getProcAddress(QLatin1String("glBindFramebufferARB"));
+    }
+
+    if (funcs->bindFramebuffer)
+        funcs->bindFramebuffer(target, framebuffer);
+    else
+        funcs->bindFramebuffer = qglfResolveBindFramebuffer;
+}
+
+static void qglfResolveBindRenderbuffer(GLenum target, GLuint renderbuffer)
+{
+    typedef void (QGLF_APIENTRYP type_glBindRenderbuffer)(GLenum target, GLuint renderbuffer);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->bindRenderbuffer = (type_glBindRenderbuffer)
+        context->getProcAddress(QLatin1String("glBindRenderbuffer"));
+#ifdef QT_OPENGL_ES
+    if (!funcs->bindRenderbuffer) {
+        funcs->bindRenderbuffer = (type_glBindRenderbuffer)
+            context->getProcAddress(QLatin1String("glBindRenderbufferOES"));
+    }
+#endif
+    if (!funcs->bindRenderbuffer) {
+        funcs->bindRenderbuffer = (type_glBindRenderbuffer)
+            context->getProcAddress(QLatin1String("glBindRenderbufferEXT"));
+    }
+    if (!funcs->bindRenderbuffer) {
+        funcs->bindRenderbuffer = (type_glBindRenderbuffer)
+            context->getProcAddress(QLatin1String("glBindRenderbufferARB"));
+    }
+
+    if (funcs->bindRenderbuffer)
+        funcs->bindRenderbuffer(target, renderbuffer);
+    else
+        funcs->bindRenderbuffer = qglfResolveBindRenderbuffer;
+}
+
+static void qglfResolveBlendColor(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha)
+{
+    typedef void (QGLF_APIENTRYP type_glBlendColor)(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->blendColor = (type_glBlendColor)
+        context->getProcAddress(QLatin1String("glBlendColor"));
+#ifdef QT_OPENGL_ES
+    if (!funcs->blendColor) {
+        funcs->blendColor = (type_glBlendColor)
+            context->getProcAddress(QLatin1String("glBlendColorOES"));
+    }
+#endif
+    if (!funcs->blendColor) {
+        funcs->blendColor = (type_glBlendColor)
+            context->getProcAddress(QLatin1String("glBlendColorEXT"));
+    }
+    if (!funcs->blendColor) {
+        funcs->blendColor = (type_glBlendColor)
+            context->getProcAddress(QLatin1String("glBlendColorARB"));
+    }
+
+    if (funcs->blendColor)
+        funcs->blendColor(red, green, blue, alpha);
+    else
+        funcs->blendColor = qglfResolveBlendColor;
+}
+
+static void qglfResolveBlendEquation(GLenum mode)
+{
+    typedef void (QGLF_APIENTRYP type_glBlendEquation)(GLenum mode);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->blendEquation = (type_glBlendEquation)
+        context->getProcAddress(QLatin1String("glBlendEquation"));
+#ifdef QT_OPENGL_ES
+    if (!funcs->blendEquation) {
+        funcs->blendEquation = (type_glBlendEquation)
+            context->getProcAddress(QLatin1String("glBlendEquationOES"));
+    }
+#endif
+    if (!funcs->blendEquation) {
+        funcs->blendEquation = (type_glBlendEquation)
+            context->getProcAddress(QLatin1String("glBlendEquationEXT"));
+    }
+    if (!funcs->blendEquation) {
+        funcs->blendEquation = (type_glBlendEquation)
+            context->getProcAddress(QLatin1String("glBlendEquationARB"));
+    }
+
+    if (funcs->blendEquation)
+        funcs->blendEquation(mode);
+    else
+        funcs->blendEquation = qglfResolveBlendEquation;
+}
+
+static void qglfResolveBlendEquationSeparate(GLenum modeRGB, GLenum modeAlpha)
+{
+    typedef void (QGLF_APIENTRYP type_glBlendEquationSeparate)(GLenum modeRGB, GLenum modeAlpha);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->blendEquationSeparate = (type_glBlendEquationSeparate)
+        context->getProcAddress(QLatin1String("glBlendEquationSeparate"));
+#ifdef QT_OPENGL_ES
+    if (!funcs->blendEquationSeparate) {
+        funcs->blendEquationSeparate = (type_glBlendEquationSeparate)
+            context->getProcAddress(QLatin1String("glBlendEquationSeparateOES"));
+    }
+#endif
+    if (!funcs->blendEquationSeparate) {
+        funcs->blendEquationSeparate = (type_glBlendEquationSeparate)
+            context->getProcAddress(QLatin1String("glBlendEquationSeparateEXT"));
+    }
+    if (!funcs->blendEquationSeparate) {
+        funcs->blendEquationSeparate = (type_glBlendEquationSeparate)
+            context->getProcAddress(QLatin1String("glBlendEquationSeparateARB"));
+    }
+
+    if (funcs->blendEquationSeparate)
+        funcs->blendEquationSeparate(modeRGB, modeAlpha);
+    else
+        funcs->blendEquationSeparate = qglfResolveBlendEquationSeparate;
+}
+
+static void qglfResolveBlendFuncSeparate(GLenum srcRGB, GLenum dstRGB, GLenum srcAlpha, GLenum dstAlpha)
+{
+    typedef void (QGLF_APIENTRYP type_glBlendFuncSeparate)(GLenum srcRGB, GLenum dstRGB, GLenum srcAlpha, GLenum dstAlpha);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->blendFuncSeparate = (type_glBlendFuncSeparate)
+        context->getProcAddress(QLatin1String("glBlendFuncSeparate"));
+#ifdef QT_OPENGL_ES
+    if (!funcs->blendFuncSeparate) {
+        funcs->blendFuncSeparate = (type_glBlendFuncSeparate)
+            context->getProcAddress(QLatin1String("glBlendFuncSeparateOES"));
+    }
+#endif
+    if (!funcs->blendFuncSeparate) {
+        funcs->blendFuncSeparate = (type_glBlendFuncSeparate)
+            context->getProcAddress(QLatin1String("glBlendFuncSeparateEXT"));
+    }
+    if (!funcs->blendFuncSeparate) {
+        funcs->blendFuncSeparate = (type_glBlendFuncSeparate)
+            context->getProcAddress(QLatin1String("glBlendFuncSeparateARB"));
+    }
+
+    if (funcs->blendFuncSeparate)
+        funcs->blendFuncSeparate(srcRGB, dstRGB, srcAlpha, dstAlpha);
+    else
+        funcs->blendFuncSeparate = qglfResolveBlendFuncSeparate;
+}
+
+static void qglfResolveBufferData(GLenum target, qgl_GLsizeiptr size, const void* data, GLenum usage)
+{
+    typedef void (QGLF_APIENTRYP type_glBufferData)(GLenum target, qgl_GLsizeiptr size, const void* data, GLenum usage);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->bufferData = (type_glBufferData)
+        context->getProcAddress(QLatin1String("glBufferData"));
+#ifdef QT_OPENGL_ES
+    if (!funcs->bufferData) {
+        funcs->bufferData = (type_glBufferData)
+            context->getProcAddress(QLatin1String("glBufferDataOES"));
+    }
+#endif
+    if (!funcs->bufferData) {
+        funcs->bufferData = (type_glBufferData)
+            context->getProcAddress(QLatin1String("glBufferDataEXT"));
+    }
+    if (!funcs->bufferData) {
+        funcs->bufferData = (type_glBufferData)
+            context->getProcAddress(QLatin1String("glBufferDataARB"));
+    }
+
+    if (funcs->bufferData)
+        funcs->bufferData(target, size, data, usage);
+    else
+        funcs->bufferData = qglfResolveBufferData;
+}
+
+static void qglfResolveBufferSubData(GLenum target, qgl_GLintptr offset, qgl_GLsizeiptr size, const void* data)
+{
+    typedef void (QGLF_APIENTRYP type_glBufferSubData)(GLenum target, qgl_GLintptr offset, qgl_GLsizeiptr size, const void* data);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->bufferSubData = (type_glBufferSubData)
+        context->getProcAddress(QLatin1String("glBufferSubData"));
+#ifdef QT_OPENGL_ES
+    if (!funcs->bufferSubData) {
+        funcs->bufferSubData = (type_glBufferSubData)
+            context->getProcAddress(QLatin1String("glBufferSubDataOES"));
+    }
+#endif
+    if (!funcs->bufferSubData) {
+        funcs->bufferSubData = (type_glBufferSubData)
+            context->getProcAddress(QLatin1String("glBufferSubDataEXT"));
+    }
+    if (!funcs->bufferSubData) {
+        funcs->bufferSubData = (type_glBufferSubData)
+            context->getProcAddress(QLatin1String("glBufferSubDataARB"));
+    }
+
+    if (funcs->bufferSubData)
+        funcs->bufferSubData(target, offset, size, data);
+    else
+        funcs->bufferSubData = qglfResolveBufferSubData;
+}
+
+static GLenum qglfResolveCheckFramebufferStatus(GLenum target)
+{
+    typedef GLenum (QGLF_APIENTRYP type_glCheckFramebufferStatus)(GLenum target);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->checkFramebufferStatus = (type_glCheckFramebufferStatus)
+        context->getProcAddress(QLatin1String("glCheckFramebufferStatus"));
+#ifdef QT_OPENGL_ES
+    if (!funcs->checkFramebufferStatus) {
+        funcs->checkFramebufferStatus = (type_glCheckFramebufferStatus)
+            context->getProcAddress(QLatin1String("glCheckFramebufferStatusOES"));
+    }
+#endif
+    if (!funcs->checkFramebufferStatus) {
+        funcs->checkFramebufferStatus = (type_glCheckFramebufferStatus)
+            context->getProcAddress(QLatin1String("glCheckFramebufferStatusEXT"));
+    }
+    if (!funcs->checkFramebufferStatus) {
+        funcs->checkFramebufferStatus = (type_glCheckFramebufferStatus)
+            context->getProcAddress(QLatin1String("glCheckFramebufferStatusARB"));
+    }
+
+    if (funcs->checkFramebufferStatus)
+        return funcs->checkFramebufferStatus(target);
+    funcs->checkFramebufferStatus = qglfResolveCheckFramebufferStatus;
+    return GLenum(0);
+}
+
+static void qglfResolveCompileShader(GLuint shader)
+{
+    typedef void (QGLF_APIENTRYP type_glCompileShader)(GLuint shader);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->compileShader = (type_glCompileShader)
+        context->getProcAddress(QLatin1String("glCompileShader"));
+    if (!funcs->compileShader) {
+        funcs->compileShader = (type_glCompileShader)
+            context->getProcAddress(QLatin1String("glCompileShader"));
+    }
+
+    if (funcs->compileShader)
+        funcs->compileShader(shader);
+    else
+        funcs->compileShader = qglfResolveCompileShader;
+}
+
+static void qglfResolveCompressedTexImage2D(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLint border, GLsizei imageSize, const void* data)
+{
+    typedef void (QGLF_APIENTRYP type_glCompressedTexImage2D)(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLint border, GLsizei imageSize, const void* data);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->compressedTexImage2D = (type_glCompressedTexImage2D)
+        context->getProcAddress(QLatin1String("glCompressedTexImage2D"));
+#ifdef QT_OPENGL_ES
+    if (!funcs->compressedTexImage2D) {
+        funcs->compressedTexImage2D = (type_glCompressedTexImage2D)
+            context->getProcAddress(QLatin1String("glCompressedTexImage2DOES"));
+    }
+#endif
+    if (!funcs->compressedTexImage2D) {
+        funcs->compressedTexImage2D = (type_glCompressedTexImage2D)
+            context->getProcAddress(QLatin1String("glCompressedTexImage2DEXT"));
+    }
+    if (!funcs->compressedTexImage2D) {
+        funcs->compressedTexImage2D = (type_glCompressedTexImage2D)
+            context->getProcAddress(QLatin1String("glCompressedTexImage2DARB"));
+    }
+
+    if (funcs->compressedTexImage2D)
+        funcs->compressedTexImage2D(target, level, internalformat, width, height, border, imageSize, data);
+    else
+        funcs->compressedTexImage2D = qglfResolveCompressedTexImage2D;
+}
+
+static void qglfResolveCompressedTexSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const void* data)
+{
+    typedef void (QGLF_APIENTRYP type_glCompressedTexSubImage2D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const void* data);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->compressedTexSubImage2D = (type_glCompressedTexSubImage2D)
+        context->getProcAddress(QLatin1String("glCompressedTexSubImage2D"));
+#ifdef QT_OPENGL_ES
+    if (!funcs->compressedTexSubImage2D) {
+        funcs->compressedTexSubImage2D = (type_glCompressedTexSubImage2D)
+            context->getProcAddress(QLatin1String("glCompressedTexSubImage2DOES"));
+    }
+#endif
+    if (!funcs->compressedTexSubImage2D) {
+        funcs->compressedTexSubImage2D = (type_glCompressedTexSubImage2D)
+            context->getProcAddress(QLatin1String("glCompressedTexSubImage2DEXT"));
+    }
+    if (!funcs->compressedTexSubImage2D) {
+        funcs->compressedTexSubImage2D = (type_glCompressedTexSubImage2D)
+            context->getProcAddress(QLatin1String("glCompressedTexSubImage2DARB"));
+    }
+
+    if (funcs->compressedTexSubImage2D)
+        funcs->compressedTexSubImage2D(target, level, xoffset, yoffset, width, height, format, imageSize, data);
+    else
+        funcs->compressedTexSubImage2D = qglfResolveCompressedTexSubImage2D;
+}
+
+static GLuint qglfResolveCreateProgram()
+{
+    typedef GLuint (QGLF_APIENTRYP type_glCreateProgram)();
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->createProgram = (type_glCreateProgram)
+        context->getProcAddress(QLatin1String("glCreateProgram"));
+    if (!funcs->createProgram) {
+        funcs->createProgram = (type_glCreateProgram)
+            context->getProcAddress(QLatin1String("glCreateProgramObjectARB"));
+    }
+
+    if (funcs->createProgram)
+        return funcs->createProgram();
+    funcs->createProgram = qglfResolveCreateProgram;
+    return GLuint(0);
+}
+
+static GLuint qglfResolveCreateShader(GLenum type)
+{
+    typedef GLuint (QGLF_APIENTRYP type_glCreateShader)(GLenum type);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->createShader = (type_glCreateShader)
+        context->getProcAddress(QLatin1String("glCreateShader"));
+    if (!funcs->createShader) {
+        funcs->createShader = (type_glCreateShader)
+            context->getProcAddress(QLatin1String("glCreateShaderObjectARB"));
+    }
+
+    if (funcs->createShader)
+        return funcs->createShader(type);
+    funcs->createShader = qglfResolveCreateShader;
+    return GLuint(0);
+}
+
+static void qglfResolveDeleteBuffers(GLsizei n, const GLuint* buffers)
+{
+    typedef void (QGLF_APIENTRYP type_glDeleteBuffers)(GLsizei n, const GLuint* buffers);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->deleteBuffers = (type_glDeleteBuffers)
+        context->getProcAddress(QLatin1String("glDeleteBuffers"));
+#ifdef QT_OPENGL_ES
+    if (!funcs->deleteBuffers) {
+        funcs->deleteBuffers = (type_glDeleteBuffers)
+            context->getProcAddress(QLatin1String("glDeleteBuffersOES"));
+    }
+#endif
+    if (!funcs->deleteBuffers) {
+        funcs->deleteBuffers = (type_glDeleteBuffers)
+            context->getProcAddress(QLatin1String("glDeleteBuffersEXT"));
+    }
+    if (!funcs->deleteBuffers) {
+        funcs->deleteBuffers = (type_glDeleteBuffers)
+            context->getProcAddress(QLatin1String("glDeleteBuffersARB"));
+    }
+
+    if (funcs->deleteBuffers)
+        funcs->deleteBuffers(n, buffers);
+    else
+        funcs->deleteBuffers = qglfResolveDeleteBuffers;
+}
+
+static void qglfResolveDeleteFramebuffers(GLsizei n, const GLuint* framebuffers)
+{
+    typedef void (QGLF_APIENTRYP type_glDeleteFramebuffers)(GLsizei n, const GLuint* framebuffers);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->deleteFramebuffers = (type_glDeleteFramebuffers)
+        context->getProcAddress(QLatin1String("glDeleteFramebuffers"));
+#ifdef QT_OPENGL_ES
+    if (!funcs->deleteFramebuffers) {
+        funcs->deleteFramebuffers = (type_glDeleteFramebuffers)
+            context->getProcAddress(QLatin1String("glDeleteFramebuffersOES"));
+    }
+#endif
+    if (!funcs->deleteFramebuffers) {
+        funcs->deleteFramebuffers = (type_glDeleteFramebuffers)
+            context->getProcAddress(QLatin1String("glDeleteFramebuffersEXT"));
+    }
+    if (!funcs->deleteFramebuffers) {
+        funcs->deleteFramebuffers = (type_glDeleteFramebuffers)
+            context->getProcAddress(QLatin1String("glDeleteFramebuffersARB"));
+    }
+
+    if (funcs->deleteFramebuffers)
+        funcs->deleteFramebuffers(n, framebuffers);
+    else
+        funcs->deleteFramebuffers = qglfResolveDeleteFramebuffers;
+}
+
+static void qglfResolveDeleteProgram(GLuint program)
+{
+    typedef void (QGLF_APIENTRYP type_glDeleteProgram)(GLuint program);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->deleteProgram = (type_glDeleteProgram)
+        context->getProcAddress(QLatin1String("glDeleteProgram"));
+    if (!funcs->deleteProgram) {
+        funcs->deleteProgram = (type_glDeleteProgram)
+            context->getProcAddress(QLatin1String("glDeleteObjectARB"));
+    }
+
+    if (funcs->deleteProgram)
+        funcs->deleteProgram(program);
+    else
+        funcs->deleteProgram = qglfResolveDeleteProgram;
+}
+
+static void qglfResolveDeleteRenderbuffers(GLsizei n, const GLuint* renderbuffers)
+{
+    typedef void (QGLF_APIENTRYP type_glDeleteRenderbuffers)(GLsizei n, const GLuint* renderbuffers);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->deleteRenderbuffers = (type_glDeleteRenderbuffers)
+        context->getProcAddress(QLatin1String("glDeleteRenderbuffers"));
+#ifdef QT_OPENGL_ES
+    if (!funcs->deleteRenderbuffers) {
+        funcs->deleteRenderbuffers = (type_glDeleteRenderbuffers)
+            context->getProcAddress(QLatin1String("glDeleteRenderbuffersOES"));
+    }
+#endif
+    if (!funcs->deleteRenderbuffers) {
+        funcs->deleteRenderbuffers = (type_glDeleteRenderbuffers)
+            context->getProcAddress(QLatin1String("glDeleteRenderbuffersEXT"));
+    }
+    if (!funcs->deleteRenderbuffers) {
+        funcs->deleteRenderbuffers = (type_glDeleteRenderbuffers)
+            context->getProcAddress(QLatin1String("glDeleteRenderbuffersARB"));
+    }
+
+    if (funcs->deleteRenderbuffers)
+        funcs->deleteRenderbuffers(n, renderbuffers);
+    else
+        funcs->deleteRenderbuffers = qglfResolveDeleteRenderbuffers;
+}
+
+static void qglfResolveDeleteShader(GLuint shader)
+{
+    typedef void (QGLF_APIENTRYP type_glDeleteShader)(GLuint shader);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->deleteShader = (type_glDeleteShader)
+        context->getProcAddress(QLatin1String("glDeleteShader"));
+    if (!funcs->deleteShader) {
+        funcs->deleteShader = (type_glDeleteShader)
+            context->getProcAddress(QLatin1String("glDeleteObjectARB"));
+    }
+
+    if (funcs->deleteShader)
+        funcs->deleteShader(shader);
+    else
+        funcs->deleteShader = qglfResolveDeleteShader;
+}
+
+static void qglfResolveDetachShader(GLuint program, GLuint shader)
+{
+    typedef void (QGLF_APIENTRYP type_glDetachShader)(GLuint program, GLuint shader);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->detachShader = (type_glDetachShader)
+        context->getProcAddress(QLatin1String("glDetachShader"));
+    if (!funcs->detachShader) {
+        funcs->detachShader = (type_glDetachShader)
+            context->getProcAddress(QLatin1String("glDetachObjectARB"));
+    }
+
+    if (funcs->detachShader)
+        funcs->detachShader(program, shader);
+    else
+        funcs->detachShader = qglfResolveDetachShader;
+}
+
+static void qglfResolveDisableVertexAttribArray(GLuint index)
+{
+    typedef void (QGLF_APIENTRYP type_glDisableVertexAttribArray)(GLuint index);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->disableVertexAttribArray = (type_glDisableVertexAttribArray)
+        context->getProcAddress(QLatin1String("glDisableVertexAttribArray"));
+    if (!funcs->disableVertexAttribArray) {
+        funcs->disableVertexAttribArray = (type_glDisableVertexAttribArray)
+            context->getProcAddress(QLatin1String("glDisableVertexAttribArrayARB"));
+    }
+
+    if (funcs->disableVertexAttribArray)
+        funcs->disableVertexAttribArray(index);
+    else
+        funcs->disableVertexAttribArray = qglfResolveDisableVertexAttribArray;
+}
+
+static void qglfResolveEnableVertexAttribArray(GLuint index)
+{
+    typedef void (QGLF_APIENTRYP type_glEnableVertexAttribArray)(GLuint index);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->enableVertexAttribArray = (type_glEnableVertexAttribArray)
+        context->getProcAddress(QLatin1String("glEnableVertexAttribArray"));
+    if (!funcs->enableVertexAttribArray) {
+        funcs->enableVertexAttribArray = (type_glEnableVertexAttribArray)
+            context->getProcAddress(QLatin1String("glEnableVertexAttribArrayARB"));
+    }
+
+    if (funcs->enableVertexAttribArray)
+        funcs->enableVertexAttribArray(index);
+    else
+        funcs->enableVertexAttribArray = qglfResolveEnableVertexAttribArray;
+}
+
+static void qglfResolveFramebufferRenderbuffer(GLenum target, GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer)
+{
+    typedef void (QGLF_APIENTRYP type_glFramebufferRenderbuffer)(GLenum target, GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->framebufferRenderbuffer = (type_glFramebufferRenderbuffer)
+        context->getProcAddress(QLatin1String("glFramebufferRenderbuffer"));
+#ifdef QT_OPENGL_ES
+    if (!funcs->framebufferRenderbuffer) {
+        funcs->framebufferRenderbuffer = (type_glFramebufferRenderbuffer)
+            context->getProcAddress(QLatin1String("glFramebufferRenderbufferOES"));
+    }
+#endif
+    if (!funcs->framebufferRenderbuffer) {
+        funcs->framebufferRenderbuffer = (type_glFramebufferRenderbuffer)
+            context->getProcAddress(QLatin1String("glFramebufferRenderbufferEXT"));
+    }
+    if (!funcs->framebufferRenderbuffer) {
+        funcs->framebufferRenderbuffer = (type_glFramebufferRenderbuffer)
+            context->getProcAddress(QLatin1String("glFramebufferRenderbufferARB"));
+    }
+
+    if (funcs->framebufferRenderbuffer)
+        funcs->framebufferRenderbuffer(target, attachment, renderbuffertarget, renderbuffer);
+    else
+        funcs->framebufferRenderbuffer = qglfResolveFramebufferRenderbuffer;
+}
+
+static void qglfResolveFramebufferTexture2D(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level)
+{
+    typedef void (QGLF_APIENTRYP type_glFramebufferTexture2D)(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->framebufferTexture2D = (type_glFramebufferTexture2D)
+        context->getProcAddress(QLatin1String("glFramebufferTexture2D"));
+#ifdef QT_OPENGL_ES
+    if (!funcs->framebufferTexture2D) {
+        funcs->framebufferTexture2D = (type_glFramebufferTexture2D)
+            context->getProcAddress(QLatin1String("glFramebufferTexture2DOES"));
+    }
+#endif
+    if (!funcs->framebufferTexture2D) {
+        funcs->framebufferTexture2D = (type_glFramebufferTexture2D)
+            context->getProcAddress(QLatin1String("glFramebufferTexture2DEXT"));
+    }
+    if (!funcs->framebufferTexture2D) {
+        funcs->framebufferTexture2D = (type_glFramebufferTexture2D)
+            context->getProcAddress(QLatin1String("glFramebufferTexture2DARB"));
+    }
+
+    if (funcs->framebufferTexture2D)
+        funcs->framebufferTexture2D(target, attachment, textarget, texture, level);
+    else
+        funcs->framebufferTexture2D = qglfResolveFramebufferTexture2D;
+}
+
+static void qglfResolveGenBuffers(GLsizei n, GLuint* buffers)
+{
+    typedef void (QGLF_APIENTRYP type_glGenBuffers)(GLsizei n, GLuint* buffers);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->genBuffers = (type_glGenBuffers)
+        context->getProcAddress(QLatin1String("glGenBuffers"));
+#ifdef QT_OPENGL_ES
+    if (!funcs->genBuffers) {
+        funcs->genBuffers = (type_glGenBuffers)
+            context->getProcAddress(QLatin1String("glGenBuffersOES"));
+    }
+#endif
+    if (!funcs->genBuffers) {
+        funcs->genBuffers = (type_glGenBuffers)
+            context->getProcAddress(QLatin1String("glGenBuffersEXT"));
+    }
+    if (!funcs->genBuffers) {
+        funcs->genBuffers = (type_glGenBuffers)
+            context->getProcAddress(QLatin1String("glGenBuffersARB"));
+    }
+
+    if (funcs->genBuffers)
+        funcs->genBuffers(n, buffers);
+    else
+        funcs->genBuffers = qglfResolveGenBuffers;
+}
+
+static void qglfResolveGenerateMipmap(GLenum target)
+{
+    typedef void (QGLF_APIENTRYP type_glGenerateMipmap)(GLenum target);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->generateMipmap = (type_glGenerateMipmap)
+        context->getProcAddress(QLatin1String("glGenerateMipmap"));
+#ifdef QT_OPENGL_ES
+    if (!funcs->generateMipmap) {
+        funcs->generateMipmap = (type_glGenerateMipmap)
+            context->getProcAddress(QLatin1String("glGenerateMipmapOES"));
+    }
+#endif
+    if (!funcs->generateMipmap) {
+        funcs->generateMipmap = (type_glGenerateMipmap)
+            context->getProcAddress(QLatin1String("glGenerateMipmapEXT"));
+    }
+    if (!funcs->generateMipmap) {
+        funcs->generateMipmap = (type_glGenerateMipmap)
+            context->getProcAddress(QLatin1String("glGenerateMipmapARB"));
+    }
+
+    if (funcs->generateMipmap)
+        funcs->generateMipmap(target);
+    else
+        funcs->generateMipmap = qglfResolveGenerateMipmap;
+}
+
+static void qglfResolveGenFramebuffers(GLsizei n, GLuint* framebuffers)
+{
+    typedef void (QGLF_APIENTRYP type_glGenFramebuffers)(GLsizei n, GLuint* framebuffers);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->genFramebuffers = (type_glGenFramebuffers)
+        context->getProcAddress(QLatin1String("glGenFramebuffers"));
+#ifdef QT_OPENGL_ES
+    if (!funcs->genFramebuffers) {
+        funcs->genFramebuffers = (type_glGenFramebuffers)
+            context->getProcAddress(QLatin1String("glGenFramebuffersOES"));
+    }
+#endif
+    if (!funcs->genFramebuffers) {
+        funcs->genFramebuffers = (type_glGenFramebuffers)
+            context->getProcAddress(QLatin1String("glGenFramebuffersEXT"));
+    }
+    if (!funcs->genFramebuffers) {
+        funcs->genFramebuffers = (type_glGenFramebuffers)
+            context->getProcAddress(QLatin1String("glGenFramebuffersARB"));
+    }
+
+    if (funcs->genFramebuffers)
+        funcs->genFramebuffers(n, framebuffers);
+    else
+        funcs->genFramebuffers = qglfResolveGenFramebuffers;
+}
+
+static void qglfResolveGenRenderbuffers(GLsizei n, GLuint* renderbuffers)
+{
+    typedef void (QGLF_APIENTRYP type_glGenRenderbuffers)(GLsizei n, GLuint* renderbuffers);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->genRenderbuffers = (type_glGenRenderbuffers)
+        context->getProcAddress(QLatin1String("glGenRenderbuffers"));
+#ifdef QT_OPENGL_ES
+    if (!funcs->genRenderbuffers) {
+        funcs->genRenderbuffers = (type_glGenRenderbuffers)
+            context->getProcAddress(QLatin1String("glGenRenderbuffersOES"));
+    }
+#endif
+    if (!funcs->genRenderbuffers) {
+        funcs->genRenderbuffers = (type_glGenRenderbuffers)
+            context->getProcAddress(QLatin1String("glGenRenderbuffersEXT"));
+    }
+    if (!funcs->genRenderbuffers) {
+        funcs->genRenderbuffers = (type_glGenRenderbuffers)
+            context->getProcAddress(QLatin1String("glGenRenderbuffersARB"));
+    }
+
+    if (funcs->genRenderbuffers)
+        funcs->genRenderbuffers(n, renderbuffers);
+    else
+        funcs->genRenderbuffers = qglfResolveGenRenderbuffers;
+}
+
+static void qglfResolveGetActiveAttrib(GLuint program, GLuint index, GLsizei bufsize, GLsizei* length, GLint* size, GLenum* type, char* name)
+{
+    typedef void (QGLF_APIENTRYP type_glGetActiveAttrib)(GLuint program, GLuint index, GLsizei bufsize, GLsizei* length, GLint* size, GLenum* type, char* name);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->getActiveAttrib = (type_glGetActiveAttrib)
+        context->getProcAddress(QLatin1String("glGetActiveAttrib"));
+    if (!funcs->getActiveAttrib) {
+        funcs->getActiveAttrib = (type_glGetActiveAttrib)
+            context->getProcAddress(QLatin1String("glGetActiveAttribARB"));
+    }
+
+    if (funcs->getActiveAttrib)
+        funcs->getActiveAttrib(program, index, bufsize, length, size, type, name);
+    else
+        funcs->getActiveAttrib = qglfResolveGetActiveAttrib;
+}
+
+static void qglfResolveGetActiveUniform(GLuint program, GLuint index, GLsizei bufsize, GLsizei* length, GLint* size, GLenum* type, char* name)
+{
+    typedef void (QGLF_APIENTRYP type_glGetActiveUniform)(GLuint program, GLuint index, GLsizei bufsize, GLsizei* length, GLint* size, GLenum* type, char* name);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->getActiveUniform = (type_glGetActiveUniform)
+        context->getProcAddress(QLatin1String("glGetActiveUniform"));
+    if (!funcs->getActiveUniform) {
+        funcs->getActiveUniform = (type_glGetActiveUniform)
+            context->getProcAddress(QLatin1String("glGetActiveUniformARB"));
+    }
+
+    if (funcs->getActiveUniform)
+        funcs->getActiveUniform(program, index, bufsize, length, size, type, name);
+    else
+        funcs->getActiveUniform = qglfResolveGetActiveUniform;
+}
+
+static void qglfResolveGetAttachedShaders(GLuint program, GLsizei maxcount, GLsizei* count, GLuint* shaders)
+{
+    typedef void (QGLF_APIENTRYP type_glGetAttachedShaders)(GLuint program, GLsizei maxcount, GLsizei* count, GLuint* shaders);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->getAttachedShaders = (type_glGetAttachedShaders)
+        context->getProcAddress(QLatin1String("glGetAttachedShaders"));
+    if (!funcs->getAttachedShaders) {
+        funcs->getAttachedShaders = (type_glGetAttachedShaders)
+            context->getProcAddress(QLatin1String("glGetAttachedObjectsARB"));
+    }
+
+    if (funcs->getAttachedShaders)
+        funcs->getAttachedShaders(program, maxcount, count, shaders);
+    else
+        funcs->getAttachedShaders = qglfResolveGetAttachedShaders;
+}
+
+static int qglfResolveGetAttribLocation(GLuint program, const char* name)
+{
+    typedef int (QGLF_APIENTRYP type_glGetAttribLocation)(GLuint program, const char* name);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->getAttribLocation = (type_glGetAttribLocation)
+        context->getProcAddress(QLatin1String("glGetAttribLocation"));
+    if (!funcs->getAttribLocation) {
+        funcs->getAttribLocation = (type_glGetAttribLocation)
+            context->getProcAddress(QLatin1String("glGetAttribLocationARB"));
+    }
+
+    if (funcs->getAttribLocation)
+        return funcs->getAttribLocation(program, name);
+    funcs->getAttribLocation = qglfResolveGetAttribLocation;
+    return int(0);
+}
+
+static void qglfResolveGetBufferParameteriv(GLenum target, GLenum pname, GLint* params)
+{
+    typedef void (QGLF_APIENTRYP type_glGetBufferParameteriv)(GLenum target, GLenum pname, GLint* params);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->getBufferParameteriv = (type_glGetBufferParameteriv)
+        context->getProcAddress(QLatin1String("glGetBufferParameteriv"));
+#ifdef QT_OPENGL_ES
+    if (!funcs->getBufferParameteriv) {
+        funcs->getBufferParameteriv = (type_glGetBufferParameteriv)
+            context->getProcAddress(QLatin1String("glGetBufferParameterivOES"));
+    }
+#endif
+    if (!funcs->getBufferParameteriv) {
+        funcs->getBufferParameteriv = (type_glGetBufferParameteriv)
+            context->getProcAddress(QLatin1String("glGetBufferParameterivEXT"));
+    }
+    if (!funcs->getBufferParameteriv) {
+        funcs->getBufferParameteriv = (type_glGetBufferParameteriv)
+            context->getProcAddress(QLatin1String("glGetBufferParameterivARB"));
+    }
+
+    if (funcs->getBufferParameteriv)
+        funcs->getBufferParameteriv(target, pname, params);
+    else
+        funcs->getBufferParameteriv = qglfResolveGetBufferParameteriv;
+}
+
+static void qglfResolveGetFramebufferAttachmentParameteriv(GLenum target, GLenum attachment, GLenum pname, GLint* params)
+{
+    typedef void (QGLF_APIENTRYP type_glGetFramebufferAttachmentParameteriv)(GLenum target, GLenum attachment, GLenum pname, GLint* params);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->getFramebufferAttachmentParameteriv = (type_glGetFramebufferAttachmentParameteriv)
+        context->getProcAddress(QLatin1String("glGetFramebufferAttachmentParameteriv"));
+#ifdef QT_OPENGL_ES
+    if (!funcs->getFramebufferAttachmentParameteriv) {
+        funcs->getFramebufferAttachmentParameteriv = (type_glGetFramebufferAttachmentParameteriv)
+            context->getProcAddress(QLatin1String("glGetFramebufferAttachmentParameterivOES"));
+    }
+#endif
+    if (!funcs->getFramebufferAttachmentParameteriv) {
+        funcs->getFramebufferAttachmentParameteriv = (type_glGetFramebufferAttachmentParameteriv)
+            context->getProcAddress(QLatin1String("glGetFramebufferAttachmentParameterivEXT"));
+    }
+    if (!funcs->getFramebufferAttachmentParameteriv) {
+        funcs->getFramebufferAttachmentParameteriv = (type_glGetFramebufferAttachmentParameteriv)
+            context->getProcAddress(QLatin1String("glGetFramebufferAttachmentParameterivARB"));
+    }
+
+    if (funcs->getFramebufferAttachmentParameteriv)
+        funcs->getFramebufferAttachmentParameteriv(target, attachment, pname, params);
+    else
+        funcs->getFramebufferAttachmentParameteriv = qglfResolveGetFramebufferAttachmentParameteriv;
+}
+
+static void qglfResolveGetProgramiv(GLuint program, GLenum pname, GLint* params)
+{
+    typedef void (QGLF_APIENTRYP type_glGetProgramiv)(GLuint program, GLenum pname, GLint* params);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->getProgramiv = (type_glGetProgramiv)
+        context->getProcAddress(QLatin1String("glGetProgramiv"));
+    if (!funcs->getProgramiv) {
+        funcs->getProgramiv = (type_glGetProgramiv)
+            context->getProcAddress(QLatin1String("glGetObjectParameterivARB"));
+    }
+
+    if (funcs->getProgramiv)
+        funcs->getProgramiv(program, pname, params);
+    else
+        funcs->getProgramiv = qglfResolveGetProgramiv;
+}
+
+static void qglfResolveGetProgramInfoLog(GLuint program, GLsizei bufsize, GLsizei* length, char* infolog)
+{
+    typedef void (QGLF_APIENTRYP type_glGetProgramInfoLog)(GLuint program, GLsizei bufsize, GLsizei* length, char* infolog);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->getProgramInfoLog = (type_glGetProgramInfoLog)
+        context->getProcAddress(QLatin1String("glGetProgramInfoLog"));
+    if (!funcs->getProgramInfoLog) {
+        funcs->getProgramInfoLog = (type_glGetProgramInfoLog)
+            context->getProcAddress(QLatin1String("glGetInfoLogARB"));
+    }
+
+    if (funcs->getProgramInfoLog)
+        funcs->getProgramInfoLog(program, bufsize, length, infolog);
+    else
+        funcs->getProgramInfoLog = qglfResolveGetProgramInfoLog;
+}
+
+static void qglfResolveGetRenderbufferParameteriv(GLenum target, GLenum pname, GLint* params)
+{
+    typedef void (QGLF_APIENTRYP type_glGetRenderbufferParameteriv)(GLenum target, GLenum pname, GLint* params);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->getRenderbufferParameteriv = (type_glGetRenderbufferParameteriv)
+        context->getProcAddress(QLatin1String("glGetRenderbufferParameteriv"));
+#ifdef QT_OPENGL_ES
+    if (!funcs->getRenderbufferParameteriv) {
+        funcs->getRenderbufferParameteriv = (type_glGetRenderbufferParameteriv)
+            context->getProcAddress(QLatin1String("glGetRenderbufferParameterivOES"));
+    }
+#endif
+    if (!funcs->getRenderbufferParameteriv) {
+        funcs->getRenderbufferParameteriv = (type_glGetRenderbufferParameteriv)
+            context->getProcAddress(QLatin1String("glGetRenderbufferParameterivEXT"));
+    }
+    if (!funcs->getRenderbufferParameteriv) {
+        funcs->getRenderbufferParameteriv = (type_glGetRenderbufferParameteriv)
+            context->getProcAddress(QLatin1String("glGetRenderbufferParameterivARB"));
+    }
+
+    if (funcs->getRenderbufferParameteriv)
+        funcs->getRenderbufferParameteriv(target, pname, params);
+    else
+        funcs->getRenderbufferParameteriv = qglfResolveGetRenderbufferParameteriv;
+}
+
+static void qglfResolveGetShaderiv(GLuint shader, GLenum pname, GLint* params)
+{
+    typedef void (QGLF_APIENTRYP type_glGetShaderiv)(GLuint shader, GLenum pname, GLint* params);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->getShaderiv = (type_glGetShaderiv)
+        context->getProcAddress(QLatin1String("glGetShaderiv"));
+    if (!funcs->getShaderiv) {
+        funcs->getShaderiv = (type_glGetShaderiv)
+            context->getProcAddress(QLatin1String("glGetObjectParameterivARB"));
+    }
+
+    if (funcs->getShaderiv)
+        funcs->getShaderiv(shader, pname, params);
+    else
+        funcs->getShaderiv = qglfResolveGetShaderiv;
+}
+
+static void qglfResolveGetShaderInfoLog(GLuint shader, GLsizei bufsize, GLsizei* length, char* infolog)
+{
+    typedef void (QGLF_APIENTRYP type_glGetShaderInfoLog)(GLuint shader, GLsizei bufsize, GLsizei* length, char* infolog);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->getShaderInfoLog = (type_glGetShaderInfoLog)
+        context->getProcAddress(QLatin1String("glGetShaderInfoLog"));
+    if (!funcs->getShaderInfoLog) {
+        funcs->getShaderInfoLog = (type_glGetShaderInfoLog)
+            context->getProcAddress(QLatin1String("glGetInfoLogARB"));
+    }
+
+    if (funcs->getShaderInfoLog)
+        funcs->getShaderInfoLog(shader, bufsize, length, infolog);
+    else
+        funcs->getShaderInfoLog = qglfResolveGetShaderInfoLog;
+}
+
+static void qglfSpecialGetShaderPrecisionFormat(GLenum shadertype, GLenum precisiontype, GLint* range, GLint* precision)
+{
+    Q_UNUSED(shadertype);
+    Q_UNUSED(precisiontype);
+    range[0] = range[1] = precision[0] = 0;
+}
+
+static void qglfResolveGetShaderPrecisionFormat(GLenum shadertype, GLenum precisiontype, GLint* range, GLint* precision)
+{
+    typedef void (QGLF_APIENTRYP type_glGetShaderPrecisionFormat)(GLenum shadertype, GLenum precisiontype, GLint* range, GLint* precision);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->getShaderPrecisionFormat = (type_glGetShaderPrecisionFormat)
+        context->getProcAddress(QLatin1String("glGetShaderPrecisionFormat"));
+#ifdef QT_OPENGL_ES
+    if (!funcs->getShaderPrecisionFormat) {
+        funcs->getShaderPrecisionFormat = (type_glGetShaderPrecisionFormat)
+            context->getProcAddress(QLatin1String("glGetShaderPrecisionFormatOES"));
+    }
+#endif
+    if (!funcs->getShaderPrecisionFormat) {
+        funcs->getShaderPrecisionFormat = (type_glGetShaderPrecisionFormat)
+            context->getProcAddress(QLatin1String("glGetShaderPrecisionFormatEXT"));
+    }
+    if (!funcs->getShaderPrecisionFormat) {
+        funcs->getShaderPrecisionFormat = (type_glGetShaderPrecisionFormat)
+            context->getProcAddress(QLatin1String("glGetShaderPrecisionFormatARB"));
+    }
+
+    if (!funcs->getShaderPrecisionFormat)
+        funcs->getShaderPrecisionFormat = qglfSpecialGetShaderPrecisionFormat;
+
+    funcs->getShaderPrecisionFormat(shadertype, precisiontype, range, precision);
+}
+
+static void qglfResolveGetShaderSource(GLuint shader, GLsizei bufsize, GLsizei* length, char* source)
+{
+    typedef void (QGLF_APIENTRYP type_glGetShaderSource)(GLuint shader, GLsizei bufsize, GLsizei* length, char* source);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->getShaderSource = (type_glGetShaderSource)
+        context->getProcAddress(QLatin1String("glGetShaderSource"));
+    if (!funcs->getShaderSource) {
+        funcs->getShaderSource = (type_glGetShaderSource)
+            context->getProcAddress(QLatin1String("glGetShaderSourceARB"));
+    }
+
+    if (funcs->getShaderSource)
+        funcs->getShaderSource(shader, bufsize, length, source);
+    else
+        funcs->getShaderSource = qglfResolveGetShaderSource;
+}
+
+static void qglfResolveGetUniformfv(GLuint program, GLint location, GLfloat* params)
+{
+    typedef void (QGLF_APIENTRYP type_glGetUniformfv)(GLuint program, GLint location, GLfloat* params);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->getUniformfv = (type_glGetUniformfv)
+        context->getProcAddress(QLatin1String("glGetUniformfv"));
+    if (!funcs->getUniformfv) {
+        funcs->getUniformfv = (type_glGetUniformfv)
+            context->getProcAddress(QLatin1String("glGetUniformfvARB"));
+    }
+
+    if (funcs->getUniformfv)
+        funcs->getUniformfv(program, location, params);
+    else
+        funcs->getUniformfv = qglfResolveGetUniformfv;
+}
+
+static void qglfResolveGetUniformiv(GLuint program, GLint location, GLint* params)
+{
+    typedef void (QGLF_APIENTRYP type_glGetUniformiv)(GLuint program, GLint location, GLint* params);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->getUniformiv = (type_glGetUniformiv)
+        context->getProcAddress(QLatin1String("glGetUniformiv"));
+    if (!funcs->getUniformiv) {
+        funcs->getUniformiv = (type_glGetUniformiv)
+            context->getProcAddress(QLatin1String("glGetUniformivARB"));
+    }
+
+    if (funcs->getUniformiv)
+        funcs->getUniformiv(program, location, params);
+    else
+        funcs->getUniformiv = qglfResolveGetUniformiv;
+}
+
+static int qglfResolveGetUniformLocation(GLuint program, const char* name)
+{
+    typedef int (QGLF_APIENTRYP type_glGetUniformLocation)(GLuint program, const char* name);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->getUniformLocation = (type_glGetUniformLocation)
+        context->getProcAddress(QLatin1String("glGetUniformLocation"));
+    if (!funcs->getUniformLocation) {
+        funcs->getUniformLocation = (type_glGetUniformLocation)
+            context->getProcAddress(QLatin1String("glGetUniformLocationARB"));
+    }
+
+    if (funcs->getUniformLocation)
+        return funcs->getUniformLocation(program, name);
+    funcs->getUniformLocation = qglfResolveGetUniformLocation;
+    return int(0);
+}
+
+static void qglfResolveGetVertexAttribfv(GLuint index, GLenum pname, GLfloat* params)
+{
+    typedef void (QGLF_APIENTRYP type_glGetVertexAttribfv)(GLuint index, GLenum pname, GLfloat* params);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->getVertexAttribfv = (type_glGetVertexAttribfv)
+        context->getProcAddress(QLatin1String("glGetVertexAttribfv"));
+    if (!funcs->getVertexAttribfv) {
+        funcs->getVertexAttribfv = (type_glGetVertexAttribfv)
+            context->getProcAddress(QLatin1String("glGetVertexAttribfvARB"));
+    }
+
+    if (funcs->getVertexAttribfv)
+        funcs->getVertexAttribfv(index, pname, params);
+    else
+        funcs->getVertexAttribfv = qglfResolveGetVertexAttribfv;
+}
+
+static void qglfResolveGetVertexAttribiv(GLuint index, GLenum pname, GLint* params)
+{
+    typedef void (QGLF_APIENTRYP type_glGetVertexAttribiv)(GLuint index, GLenum pname, GLint* params);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->getVertexAttribiv = (type_glGetVertexAttribiv)
+        context->getProcAddress(QLatin1String("glGetVertexAttribiv"));
+    if (!funcs->getVertexAttribiv) {
+        funcs->getVertexAttribiv = (type_glGetVertexAttribiv)
+            context->getProcAddress(QLatin1String("glGetVertexAttribivARB"));
+    }
+
+    if (funcs->getVertexAttribiv)
+        funcs->getVertexAttribiv(index, pname, params);
+    else
+        funcs->getVertexAttribiv = qglfResolveGetVertexAttribiv;
+}
+
+static void qglfResolveGetVertexAttribPointerv(GLuint index, GLenum pname, void** pointer)
+{
+    typedef void (QGLF_APIENTRYP type_glGetVertexAttribPointerv)(GLuint index, GLenum pname, void** pointer);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->getVertexAttribPointerv = (type_glGetVertexAttribPointerv)
+        context->getProcAddress(QLatin1String("glGetVertexAttribPointerv"));
+    if (!funcs->getVertexAttribPointerv) {
+        funcs->getVertexAttribPointerv = (type_glGetVertexAttribPointerv)
+            context->getProcAddress(QLatin1String("glGetVertexAttribPointervARB"));
+    }
+
+    if (funcs->getVertexAttribPointerv)
+        funcs->getVertexAttribPointerv(index, pname, pointer);
+    else
+        funcs->getVertexAttribPointerv = qglfResolveGetVertexAttribPointerv;
+}
+
+static GLboolean qglfResolveIsBuffer(GLuint buffer)
+{
+    typedef GLboolean (QGLF_APIENTRYP type_glIsBuffer)(GLuint buffer);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->isBuffer = (type_glIsBuffer)
+        context->getProcAddress(QLatin1String("glIsBuffer"));
+#ifdef QT_OPENGL_ES
+    if (!funcs->isBuffer) {
+        funcs->isBuffer = (type_glIsBuffer)
+            context->getProcAddress(QLatin1String("glIsBufferOES"));
+    }
+#endif
+    if (!funcs->isBuffer) {
+        funcs->isBuffer = (type_glIsBuffer)
+            context->getProcAddress(QLatin1String("glIsBufferEXT"));
+    }
+    if (!funcs->isBuffer) {
+        funcs->isBuffer = (type_glIsBuffer)
+            context->getProcAddress(QLatin1String("glIsBufferARB"));
+    }
+
+    if (funcs->isBuffer)
+        return funcs->isBuffer(buffer);
+    funcs->isBuffer = qglfResolveIsBuffer;
+    return GLboolean(0);
+}
+
+static GLboolean qglfResolveIsFramebuffer(GLuint framebuffer)
+{
+    typedef GLboolean (QGLF_APIENTRYP type_glIsFramebuffer)(GLuint framebuffer);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->isFramebuffer = (type_glIsFramebuffer)
+        context->getProcAddress(QLatin1String("glIsFramebuffer"));
+#ifdef QT_OPENGL_ES
+    if (!funcs->isFramebuffer) {
+        funcs->isFramebuffer = (type_glIsFramebuffer)
+            context->getProcAddress(QLatin1String("glIsFramebufferOES"));
+    }
+#endif
+    if (!funcs->isFramebuffer) {
+        funcs->isFramebuffer = (type_glIsFramebuffer)
+            context->getProcAddress(QLatin1String("glIsFramebufferEXT"));
+    }
+    if (!funcs->isFramebuffer) {
+        funcs->isFramebuffer = (type_glIsFramebuffer)
+            context->getProcAddress(QLatin1String("glIsFramebufferARB"));
+    }
+
+    if (funcs->isFramebuffer)
+        return funcs->isFramebuffer(framebuffer);
+    funcs->isFramebuffer = qglfResolveIsFramebuffer;
+    return GLboolean(0);
+}
+
+static GLboolean qglfSpecialIsProgram(GLuint program)
+{
+    return program != 0;
+}
+
+static GLboolean qglfResolveIsProgram(GLuint program)
+{
+    typedef GLboolean (QGLF_APIENTRYP type_glIsProgram)(GLuint program);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->isProgram = (type_glIsProgram)
+        context->getProcAddress(QLatin1String("glIsProgram"));
+    if (!funcs->isProgram) {
+        funcs->isProgram = (type_glIsProgram)
+            context->getProcAddress(QLatin1String("glIsProgramARB"));
+    }
+
+    if (!funcs->isProgram)
+        funcs->isProgram = qglfSpecialIsProgram;
+
+    return funcs->isProgram(program);
+}
+
+static GLboolean qglfResolveIsRenderbuffer(GLuint renderbuffer)
+{
+    typedef GLboolean (QGLF_APIENTRYP type_glIsRenderbuffer)(GLuint renderbuffer);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->isRenderbuffer = (type_glIsRenderbuffer)
+        context->getProcAddress(QLatin1String("glIsRenderbuffer"));
+#ifdef QT_OPENGL_ES
+    if (!funcs->isRenderbuffer) {
+        funcs->isRenderbuffer = (type_glIsRenderbuffer)
+            context->getProcAddress(QLatin1String("glIsRenderbufferOES"));
+    }
+#endif
+    if (!funcs->isRenderbuffer) {
+        funcs->isRenderbuffer = (type_glIsRenderbuffer)
+            context->getProcAddress(QLatin1String("glIsRenderbufferEXT"));
+    }
+    if (!funcs->isRenderbuffer) {
+        funcs->isRenderbuffer = (type_glIsRenderbuffer)
+            context->getProcAddress(QLatin1String("glIsRenderbufferARB"));
+    }
+
+    if (funcs->isRenderbuffer)
+        return funcs->isRenderbuffer(renderbuffer);
+    funcs->isRenderbuffer = qglfResolveIsRenderbuffer;
+    return GLboolean(0);
+}
+
+static GLboolean qglfSpecialIsShader(GLuint shader)
+{
+    return shader != 0;
+}
+
+static GLboolean qglfResolveIsShader(GLuint shader)
+{
+    typedef GLboolean (QGLF_APIENTRYP type_glIsShader)(GLuint shader);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->isShader = (type_glIsShader)
+        context->getProcAddress(QLatin1String("glIsShader"));
+    if (!funcs->isShader) {
+        funcs->isShader = (type_glIsShader)
+            context->getProcAddress(QLatin1String("glIsShaderARB"));
+    }
+
+    if (!funcs->isShader)
+        funcs->isShader = qglfSpecialIsShader;
+
+    return funcs->isShader(shader);
+}
+
+static void qglfResolveLinkProgram(GLuint program)
+{
+    typedef void (QGLF_APIENTRYP type_glLinkProgram)(GLuint program);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->linkProgram = (type_glLinkProgram)
+        context->getProcAddress(QLatin1String("glLinkProgram"));
+    if (!funcs->linkProgram) {
+        funcs->linkProgram = (type_glLinkProgram)
+            context->getProcAddress(QLatin1String("glLinkProgramARB"));
+    }
+
+    if (funcs->linkProgram)
+        funcs->linkProgram(program);
+    else
+        funcs->linkProgram = qglfResolveLinkProgram;
+}
+
+static void qglfSpecialReleaseShaderCompiler()
+{
+}
+
+static void qglfResolveReleaseShaderCompiler()
+{
+    typedef void (QGLF_APIENTRYP type_glReleaseShaderCompiler)();
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->releaseShaderCompiler = (type_glReleaseShaderCompiler)
+        context->getProcAddress(QLatin1String("glReleaseShaderCompiler"));
+    if (!funcs->releaseShaderCompiler) {
+        funcs->releaseShaderCompiler = (type_glReleaseShaderCompiler)
+            context->getProcAddress(QLatin1String("glReleaseShaderCompilerARB"));
+    }
+
+    if (!funcs->releaseShaderCompiler)
+        funcs->releaseShaderCompiler = qglfSpecialReleaseShaderCompiler;
+
+    funcs->releaseShaderCompiler();
+}
+
+static void qglfResolveRenderbufferStorage(GLenum target, GLenum internalformat, GLsizei width, GLsizei height)
+{
+    typedef void (QGLF_APIENTRYP type_glRenderbufferStorage)(GLenum target, GLenum internalformat, GLsizei width, GLsizei height);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->renderbufferStorage = (type_glRenderbufferStorage)
+        context->getProcAddress(QLatin1String("glRenderbufferStorage"));
+#ifdef QT_OPENGL_ES
+    if (!funcs->renderbufferStorage) {
+        funcs->renderbufferStorage = (type_glRenderbufferStorage)
+            context->getProcAddress(QLatin1String("glRenderbufferStorageOES"));
+    }
+#endif
+    if (!funcs->renderbufferStorage) {
+        funcs->renderbufferStorage = (type_glRenderbufferStorage)
+            context->getProcAddress(QLatin1String("glRenderbufferStorageEXT"));
+    }
+    if (!funcs->renderbufferStorage) {
+        funcs->renderbufferStorage = (type_glRenderbufferStorage)
+            context->getProcAddress(QLatin1String("glRenderbufferStorageARB"));
+    }
+
+    if (funcs->renderbufferStorage)
+        funcs->renderbufferStorage(target, internalformat, width, height);
+    else
+        funcs->renderbufferStorage = qglfResolveRenderbufferStorage;
+}
+
+static void qglfResolveSampleCoverage(GLclampf value, GLboolean invert)
+{
+    typedef void (QGLF_APIENTRYP type_glSampleCoverage)(GLclampf value, GLboolean invert);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->sampleCoverage = (type_glSampleCoverage)
+        context->getProcAddress(QLatin1String("glSampleCoverage"));
+#ifdef QT_OPENGL_ES
+    if (!funcs->sampleCoverage) {
+        funcs->sampleCoverage = (type_glSampleCoverage)
+            context->getProcAddress(QLatin1String("glSampleCoverageOES"));
+    }
+#endif
+    if (!funcs->sampleCoverage) {
+        funcs->sampleCoverage = (type_glSampleCoverage)
+            context->getProcAddress(QLatin1String("glSampleCoverageEXT"));
+    }
+    if (!funcs->sampleCoverage) {
+        funcs->sampleCoverage = (type_glSampleCoverage)
+            context->getProcAddress(QLatin1String("glSampleCoverageARB"));
+    }
+
+    if (funcs->sampleCoverage)
+        funcs->sampleCoverage(value, invert);
+    else
+        funcs->sampleCoverage = qglfResolveSampleCoverage;
+}
+
+static void qglfResolveShaderBinary(GLint n, const GLuint* shaders, GLenum binaryformat, const void* binary, GLint length)
+{
+    typedef void (QGLF_APIENTRYP type_glShaderBinary)(GLint n, const GLuint* shaders, GLenum binaryformat, const void* binary, GLint length);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->shaderBinary = (type_glShaderBinary)
+        context->getProcAddress(QLatin1String("glShaderBinary"));
+    if (!funcs->shaderBinary) {
+        funcs->shaderBinary = (type_glShaderBinary)
+            context->getProcAddress(QLatin1String("glShaderBinaryARB"));
+    }
+
+    if (funcs->shaderBinary)
+        funcs->shaderBinary(n, shaders, binaryformat, binary, length);
+    else
+        funcs->shaderBinary = qglfResolveShaderBinary;
+}
+
+static void qglfResolveShaderSource(GLuint shader, GLsizei count, const char** string, const GLint* length)
+{
+    typedef void (QGLF_APIENTRYP type_glShaderSource)(GLuint shader, GLsizei count, const char** string, const GLint* length);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->shaderSource = (type_glShaderSource)
+        context->getProcAddress(QLatin1String("glShaderSource"));
+    if (!funcs->shaderSource) {
+        funcs->shaderSource = (type_glShaderSource)
+            context->getProcAddress(QLatin1String("glShaderSourceARB"));
+    }
+
+    if (funcs->shaderSource)
+        funcs->shaderSource(shader, count, string, length);
+    else
+        funcs->shaderSource = qglfResolveShaderSource;
+}
+
+static void qglfResolveStencilFuncSeparate(GLenum face, GLenum func, GLint ref, GLuint mask)
+{
+    typedef void (QGLF_APIENTRYP type_glStencilFuncSeparate)(GLenum face, GLenum func, GLint ref, GLuint mask);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->stencilFuncSeparate = (type_glStencilFuncSeparate)
+        context->getProcAddress(QLatin1String("glStencilFuncSeparate"));
+#ifdef QT_OPENGL_ES
+    if (!funcs->stencilFuncSeparate) {
+        funcs->stencilFuncSeparate = (type_glStencilFuncSeparate)
+            context->getProcAddress(QLatin1String("glStencilFuncSeparateOES"));
+    }
+#endif
+    if (!funcs->stencilFuncSeparate) {
+        funcs->stencilFuncSeparate = (type_glStencilFuncSeparate)
+            context->getProcAddress(QLatin1String("glStencilFuncSeparateEXT"));
+    }
+    if (!funcs->stencilFuncSeparate) {
+        funcs->stencilFuncSeparate = (type_glStencilFuncSeparate)
+            context->getProcAddress(QLatin1String("glStencilFuncSeparateARB"));
+    }
+
+    if (funcs->stencilFuncSeparate)
+        funcs->stencilFuncSeparate(face, func, ref, mask);
+    else
+        funcs->stencilFuncSeparate = qglfResolveStencilFuncSeparate;
+}
+
+static void qglfResolveStencilMaskSeparate(GLenum face, GLuint mask)
+{
+    typedef void (QGLF_APIENTRYP type_glStencilMaskSeparate)(GLenum face, GLuint mask);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->stencilMaskSeparate = (type_glStencilMaskSeparate)
+        context->getProcAddress(QLatin1String("glStencilMaskSeparate"));
+#ifdef QT_OPENGL_ES
+    if (!funcs->stencilMaskSeparate) {
+        funcs->stencilMaskSeparate = (type_glStencilMaskSeparate)
+            context->getProcAddress(QLatin1String("glStencilMaskSeparateOES"));
+    }
+#endif
+    if (!funcs->stencilMaskSeparate) {
+        funcs->stencilMaskSeparate = (type_glStencilMaskSeparate)
+            context->getProcAddress(QLatin1String("glStencilMaskSeparateEXT"));
+    }
+    if (!funcs->stencilMaskSeparate) {
+        funcs->stencilMaskSeparate = (type_glStencilMaskSeparate)
+            context->getProcAddress(QLatin1String("glStencilMaskSeparateARB"));
+    }
+
+    if (funcs->stencilMaskSeparate)
+        funcs->stencilMaskSeparate(face, mask);
+    else
+        funcs->stencilMaskSeparate = qglfResolveStencilMaskSeparate;
+}
+
+static void qglfResolveStencilOpSeparate(GLenum face, GLenum fail, GLenum zfail, GLenum zpass)
+{
+    typedef void (QGLF_APIENTRYP type_glStencilOpSeparate)(GLenum face, GLenum fail, GLenum zfail, GLenum zpass);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->stencilOpSeparate = (type_glStencilOpSeparate)
+        context->getProcAddress(QLatin1String("glStencilOpSeparate"));
+#ifdef QT_OPENGL_ES
+    if (!funcs->stencilOpSeparate) {
+        funcs->stencilOpSeparate = (type_glStencilOpSeparate)
+            context->getProcAddress(QLatin1String("glStencilOpSeparateOES"));
+    }
+#endif
+    if (!funcs->stencilOpSeparate) {
+        funcs->stencilOpSeparate = (type_glStencilOpSeparate)
+            context->getProcAddress(QLatin1String("glStencilOpSeparateEXT"));
+    }
+    if (!funcs->stencilOpSeparate) {
+        funcs->stencilOpSeparate = (type_glStencilOpSeparate)
+            context->getProcAddress(QLatin1String("glStencilOpSeparateARB"));
+    }
+
+    if (funcs->stencilOpSeparate)
+        funcs->stencilOpSeparate(face, fail, zfail, zpass);
+    else
+        funcs->stencilOpSeparate = qglfResolveStencilOpSeparate;
+}
+
+static void qglfResolveUniform1f(GLint location, GLfloat x)
+{
+    typedef void (QGLF_APIENTRYP type_glUniform1f)(GLint location, GLfloat x);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->uniform1f = (type_glUniform1f)
+        context->getProcAddress(QLatin1String("glUniform1f"));
+    if (!funcs->uniform1f) {
+        funcs->uniform1f = (type_glUniform1f)
+            context->getProcAddress(QLatin1String("glUniform1fARB"));
+    }
+
+    if (funcs->uniform1f)
+        funcs->uniform1f(location, x);
+    else
+        funcs->uniform1f = qglfResolveUniform1f;
+}
+
+static void qglfResolveUniform1fv(GLint location, GLsizei count, const GLfloat* v)
+{
+    typedef void (QGLF_APIENTRYP type_glUniform1fv)(GLint location, GLsizei count, const GLfloat* v);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->uniform1fv = (type_glUniform1fv)
+        context->getProcAddress(QLatin1String("glUniform1fv"));
+    if (!funcs->uniform1fv) {
+        funcs->uniform1fv = (type_glUniform1fv)
+            context->getProcAddress(QLatin1String("glUniform1fvARB"));
+    }
+
+    if (funcs->uniform1fv)
+        funcs->uniform1fv(location, count, v);
+    else
+        funcs->uniform1fv = qglfResolveUniform1fv;
+}
+
+static void qglfResolveUniform1i(GLint location, GLint x)
+{
+    typedef void (QGLF_APIENTRYP type_glUniform1i)(GLint location, GLint x);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->uniform1i = (type_glUniform1i)
+        context->getProcAddress(QLatin1String("glUniform1i"));
+    if (!funcs->uniform1i) {
+        funcs->uniform1i = (type_glUniform1i)
+            context->getProcAddress(QLatin1String("glUniform1iARB"));
+    }
+
+    if (funcs->uniform1i)
+        funcs->uniform1i(location, x);
+    else
+        funcs->uniform1i = qglfResolveUniform1i;
+}
+
+static void qglfResolveUniform1iv(GLint location, GLsizei count, const GLint* v)
+{
+    typedef void (QGLF_APIENTRYP type_glUniform1iv)(GLint location, GLsizei count, const GLint* v);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->uniform1iv = (type_glUniform1iv)
+        context->getProcAddress(QLatin1String("glUniform1iv"));
+    if (!funcs->uniform1iv) {
+        funcs->uniform1iv = (type_glUniform1iv)
+            context->getProcAddress(QLatin1String("glUniform1ivARB"));
+    }
+
+    if (funcs->uniform1iv)
+        funcs->uniform1iv(location, count, v);
+    else
+        funcs->uniform1iv = qglfResolveUniform1iv;
+}
+
+static void qglfResolveUniform2f(GLint location, GLfloat x, GLfloat y)
+{
+    typedef void (QGLF_APIENTRYP type_glUniform2f)(GLint location, GLfloat x, GLfloat y);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->uniform2f = (type_glUniform2f)
+        context->getProcAddress(QLatin1String("glUniform2f"));
+    if (!funcs->uniform2f) {
+        funcs->uniform2f = (type_glUniform2f)
+            context->getProcAddress(QLatin1String("glUniform2fARB"));
+    }
+
+    if (funcs->uniform2f)
+        funcs->uniform2f(location, x, y);
+    else
+        funcs->uniform2f = qglfResolveUniform2f;
+}
+
+static void qglfResolveUniform2fv(GLint location, GLsizei count, const GLfloat* v)
+{
+    typedef void (QGLF_APIENTRYP type_glUniform2fv)(GLint location, GLsizei count, const GLfloat* v);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->uniform2fv = (type_glUniform2fv)
+        context->getProcAddress(QLatin1String("glUniform2fv"));
+    if (!funcs->uniform2fv) {
+        funcs->uniform2fv = (type_glUniform2fv)
+            context->getProcAddress(QLatin1String("glUniform2fvARB"));
+    }
+
+    if (funcs->uniform2fv)
+        funcs->uniform2fv(location, count, v);
+    else
+        funcs->uniform2fv = qglfResolveUniform2fv;
+}
+
+static void qglfResolveUniform2i(GLint location, GLint x, GLint y)
+{
+    typedef void (QGLF_APIENTRYP type_glUniform2i)(GLint location, GLint x, GLint y);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->uniform2i = (type_glUniform2i)
+        context->getProcAddress(QLatin1String("glUniform2i"));
+    if (!funcs->uniform2i) {
+        funcs->uniform2i = (type_glUniform2i)
+            context->getProcAddress(QLatin1String("glUniform2iARB"));
+    }
+
+    if (funcs->uniform2i)
+        funcs->uniform2i(location, x, y);
+    else
+        funcs->uniform2i = qglfResolveUniform2i;
+}
+
+static void qglfResolveUniform2iv(GLint location, GLsizei count, const GLint* v)
+{
+    typedef void (QGLF_APIENTRYP type_glUniform2iv)(GLint location, GLsizei count, const GLint* v);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->uniform2iv = (type_glUniform2iv)
+        context->getProcAddress(QLatin1String("glUniform2iv"));
+    if (!funcs->uniform2iv) {
+        funcs->uniform2iv = (type_glUniform2iv)
+            context->getProcAddress(QLatin1String("glUniform2ivARB"));
+    }
+
+    if (funcs->uniform2iv)
+        funcs->uniform2iv(location, count, v);
+    else
+        funcs->uniform2iv = qglfResolveUniform2iv;
+}
+
+static void qglfResolveUniform3f(GLint location, GLfloat x, GLfloat y, GLfloat z)
+{
+    typedef void (QGLF_APIENTRYP type_glUniform3f)(GLint location, GLfloat x, GLfloat y, GLfloat z);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->uniform3f = (type_glUniform3f)
+        context->getProcAddress(QLatin1String("glUniform3f"));
+    if (!funcs->uniform3f) {
+        funcs->uniform3f = (type_glUniform3f)
+            context->getProcAddress(QLatin1String("glUniform3fARB"));
+    }
+
+    if (funcs->uniform3f)
+        funcs->uniform3f(location, x, y, z);
+    else
+        funcs->uniform3f = qglfResolveUniform3f;
+}
+
+static void qglfResolveUniform3fv(GLint location, GLsizei count, const GLfloat* v)
+{
+    typedef void (QGLF_APIENTRYP type_glUniform3fv)(GLint location, GLsizei count, const GLfloat* v);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->uniform3fv = (type_glUniform3fv)
+        context->getProcAddress(QLatin1String("glUniform3fv"));
+    if (!funcs->uniform3fv) {
+        funcs->uniform3fv = (type_glUniform3fv)
+            context->getProcAddress(QLatin1String("glUniform3fvARB"));
+    }
+
+    if (funcs->uniform3fv)
+        funcs->uniform3fv(location, count, v);
+    else
+        funcs->uniform3fv = qglfResolveUniform3fv;
+}
+
+static void qglfResolveUniform3i(GLint location, GLint x, GLint y, GLint z)
+{
+    typedef void (QGLF_APIENTRYP type_glUniform3i)(GLint location, GLint x, GLint y, GLint z);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->uniform3i = (type_glUniform3i)
+        context->getProcAddress(QLatin1String("glUniform3i"));
+    if (!funcs->uniform3i) {
+        funcs->uniform3i = (type_glUniform3i)
+            context->getProcAddress(QLatin1String("glUniform3iARB"));
+    }
+
+    if (funcs->uniform3i)
+        funcs->uniform3i(location, x, y, z);
+    else
+        funcs->uniform3i = qglfResolveUniform3i;
+}
+
+static void qglfResolveUniform3iv(GLint location, GLsizei count, const GLint* v)
+{
+    typedef void (QGLF_APIENTRYP type_glUniform3iv)(GLint location, GLsizei count, const GLint* v);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->uniform3iv = (type_glUniform3iv)
+        context->getProcAddress(QLatin1String("glUniform3iv"));
+    if (!funcs->uniform3iv) {
+        funcs->uniform3iv = (type_glUniform3iv)
+            context->getProcAddress(QLatin1String("glUniform3ivARB"));
+    }
+
+    if (funcs->uniform3iv)
+        funcs->uniform3iv(location, count, v);
+    else
+        funcs->uniform3iv = qglfResolveUniform3iv;
+}
+
+static void qglfResolveUniform4f(GLint location, GLfloat x, GLfloat y, GLfloat z, GLfloat w)
+{
+    typedef void (QGLF_APIENTRYP type_glUniform4f)(GLint location, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->uniform4f = (type_glUniform4f)
+        context->getProcAddress(QLatin1String("glUniform4f"));
+    if (!funcs->uniform4f) {
+        funcs->uniform4f = (type_glUniform4f)
+            context->getProcAddress(QLatin1String("glUniform4fARB"));
+    }
+
+    if (funcs->uniform4f)
+        funcs->uniform4f(location, x, y, z, w);
+    else
+        funcs->uniform4f = qglfResolveUniform4f;
+}
+
+static void qglfResolveUniform4fv(GLint location, GLsizei count, const GLfloat* v)
+{
+    typedef void (QGLF_APIENTRYP type_glUniform4fv)(GLint location, GLsizei count, const GLfloat* v);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->uniform4fv = (type_glUniform4fv)
+        context->getProcAddress(QLatin1String("glUniform4fv"));
+    if (!funcs->uniform4fv) {
+        funcs->uniform4fv = (type_glUniform4fv)
+            context->getProcAddress(QLatin1String("glUniform4fvARB"));
+    }
+
+    if (funcs->uniform4fv)
+        funcs->uniform4fv(location, count, v);
+    else
+        funcs->uniform4fv = qglfResolveUniform4fv;
+}
+
+static void qglfResolveUniform4i(GLint location, GLint x, GLint y, GLint z, GLint w)
+{
+    typedef void (QGLF_APIENTRYP type_glUniform4i)(GLint location, GLint x, GLint y, GLint z, GLint w);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->uniform4i = (type_glUniform4i)
+        context->getProcAddress(QLatin1String("glUniform4i"));
+    if (!funcs->uniform4i) {
+        funcs->uniform4i = (type_glUniform4i)
+            context->getProcAddress(QLatin1String("glUniform4iARB"));
+    }
+
+    if (funcs->uniform4i)
+        funcs->uniform4i(location, x, y, z, w);
+    else
+        funcs->uniform4i = qglfResolveUniform4i;
+}
+
+static void qglfResolveUniform4iv(GLint location, GLsizei count, const GLint* v)
+{
+    typedef void (QGLF_APIENTRYP type_glUniform4iv)(GLint location, GLsizei count, const GLint* v);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->uniform4iv = (type_glUniform4iv)
+        context->getProcAddress(QLatin1String("glUniform4iv"));
+    if (!funcs->uniform4iv) {
+        funcs->uniform4iv = (type_glUniform4iv)
+            context->getProcAddress(QLatin1String("glUniform4ivARB"));
+    }
+
+    if (funcs->uniform4iv)
+        funcs->uniform4iv(location, count, v);
+    else
+        funcs->uniform4iv = qglfResolveUniform4iv;
+}
+
+static void qglfResolveUniformMatrix2fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value)
+{
+    typedef void (QGLF_APIENTRYP type_glUniformMatrix2fv)(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->uniformMatrix2fv = (type_glUniformMatrix2fv)
+        context->getProcAddress(QLatin1String("glUniformMatrix2fv"));
+    if (!funcs->uniformMatrix2fv) {
+        funcs->uniformMatrix2fv = (type_glUniformMatrix2fv)
+            context->getProcAddress(QLatin1String("glUniformMatrix2fvARB"));
+    }
+
+    if (funcs->uniformMatrix2fv)
+        funcs->uniformMatrix2fv(location, count, transpose, value);
+    else
+        funcs->uniformMatrix2fv = qglfResolveUniformMatrix2fv;
+}
+
+static void qglfResolveUniformMatrix3fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value)
+{
+    typedef void (QGLF_APIENTRYP type_glUniformMatrix3fv)(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->uniformMatrix3fv = (type_glUniformMatrix3fv)
+        context->getProcAddress(QLatin1String("glUniformMatrix3fv"));
+    if (!funcs->uniformMatrix3fv) {
+        funcs->uniformMatrix3fv = (type_glUniformMatrix3fv)
+            context->getProcAddress(QLatin1String("glUniformMatrix3fvARB"));
+    }
+
+    if (funcs->uniformMatrix3fv)
+        funcs->uniformMatrix3fv(location, count, transpose, value);
+    else
+        funcs->uniformMatrix3fv = qglfResolveUniformMatrix3fv;
+}
+
+static void qglfResolveUniformMatrix4fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value)
+{
+    typedef void (QGLF_APIENTRYP type_glUniformMatrix4fv)(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->uniformMatrix4fv = (type_glUniformMatrix4fv)
+        context->getProcAddress(QLatin1String("glUniformMatrix4fv"));
+    if (!funcs->uniformMatrix4fv) {
+        funcs->uniformMatrix4fv = (type_glUniformMatrix4fv)
+            context->getProcAddress(QLatin1String("glUniformMatrix4fvARB"));
+    }
+
+    if (funcs->uniformMatrix4fv)
+        funcs->uniformMatrix4fv(location, count, transpose, value);
+    else
+        funcs->uniformMatrix4fv = qglfResolveUniformMatrix4fv;
+}
+
+static void qglfResolveUseProgram(GLuint program)
+{
+    typedef void (QGLF_APIENTRYP type_glUseProgram)(GLuint program);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->useProgram = (type_glUseProgram)
+        context->getProcAddress(QLatin1String("glUseProgram"));
+    if (!funcs->useProgram) {
+        funcs->useProgram = (type_glUseProgram)
+            context->getProcAddress(QLatin1String("glUseProgramObjectARB"));
+    }
+
+    if (funcs->useProgram)
+        funcs->useProgram(program);
+    else
+        funcs->useProgram = qglfResolveUseProgram;
+}
+
+static void qglfResolveValidateProgram(GLuint program)
+{
+    typedef void (QGLF_APIENTRYP type_glValidateProgram)(GLuint program);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->validateProgram = (type_glValidateProgram)
+        context->getProcAddress(QLatin1String("glValidateProgram"));
+    if (!funcs->validateProgram) {
+        funcs->validateProgram = (type_glValidateProgram)
+            context->getProcAddress(QLatin1String("glValidateProgramARB"));
+    }
+
+    if (funcs->validateProgram)
+        funcs->validateProgram(program);
+    else
+        funcs->validateProgram = qglfResolveValidateProgram;
+}
+
+static void qglfResolveVertexAttrib1f(GLuint indx, GLfloat x)
+{
+    typedef void (QGLF_APIENTRYP type_glVertexAttrib1f)(GLuint indx, GLfloat x);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->vertexAttrib1f = (type_glVertexAttrib1f)
+        context->getProcAddress(QLatin1String("glVertexAttrib1f"));
+    if (!funcs->vertexAttrib1f) {
+        funcs->vertexAttrib1f = (type_glVertexAttrib1f)
+            context->getProcAddress(QLatin1String("glVertexAttrib1fARB"));
+    }
+
+    if (funcs->vertexAttrib1f)
+        funcs->vertexAttrib1f(indx, x);
+    else
+        funcs->vertexAttrib1f = qglfResolveVertexAttrib1f;
+}
+
+static void qglfResolveVertexAttrib1fv(GLuint indx, const GLfloat* values)
+{
+    typedef void (QGLF_APIENTRYP type_glVertexAttrib1fv)(GLuint indx, const GLfloat* values);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->vertexAttrib1fv = (type_glVertexAttrib1fv)
+        context->getProcAddress(QLatin1String("glVertexAttrib1fv"));
+    if (!funcs->vertexAttrib1fv) {
+        funcs->vertexAttrib1fv = (type_glVertexAttrib1fv)
+            context->getProcAddress(QLatin1String("glVertexAttrib1fvARB"));
+    }
+
+    if (funcs->vertexAttrib1fv)
+        funcs->vertexAttrib1fv(indx, values);
+    else
+        funcs->vertexAttrib1fv = qglfResolveVertexAttrib1fv;
+}
+
+static void qglfResolveVertexAttrib2f(GLuint indx, GLfloat x, GLfloat y)
+{
+    typedef void (QGLF_APIENTRYP type_glVertexAttrib2f)(GLuint indx, GLfloat x, GLfloat y);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->vertexAttrib2f = (type_glVertexAttrib2f)
+        context->getProcAddress(QLatin1String("glVertexAttrib2f"));
+    if (!funcs->vertexAttrib2f) {
+        funcs->vertexAttrib2f = (type_glVertexAttrib2f)
+            context->getProcAddress(QLatin1String("glVertexAttrib2fARB"));
+    }
+
+    if (funcs->vertexAttrib2f)
+        funcs->vertexAttrib2f(indx, x, y);
+    else
+        funcs->vertexAttrib2f = qglfResolveVertexAttrib2f;
+}
+
+static void qglfResolveVertexAttrib2fv(GLuint indx, const GLfloat* values)
+{
+    typedef void (QGLF_APIENTRYP type_glVertexAttrib2fv)(GLuint indx, const GLfloat* values);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->vertexAttrib2fv = (type_glVertexAttrib2fv)
+        context->getProcAddress(QLatin1String("glVertexAttrib2fv"));
+    if (!funcs->vertexAttrib2fv) {
+        funcs->vertexAttrib2fv = (type_glVertexAttrib2fv)
+            context->getProcAddress(QLatin1String("glVertexAttrib2fvARB"));
+    }
+
+    if (funcs->vertexAttrib2fv)
+        funcs->vertexAttrib2fv(indx, values);
+    else
+        funcs->vertexAttrib2fv = qglfResolveVertexAttrib2fv;
+}
+
+static void qglfResolveVertexAttrib3f(GLuint indx, GLfloat x, GLfloat y, GLfloat z)
+{
+    typedef void (QGLF_APIENTRYP type_glVertexAttrib3f)(GLuint indx, GLfloat x, GLfloat y, GLfloat z);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->vertexAttrib3f = (type_glVertexAttrib3f)
+        context->getProcAddress(QLatin1String("glVertexAttrib3f"));
+    if (!funcs->vertexAttrib3f) {
+        funcs->vertexAttrib3f = (type_glVertexAttrib3f)
+            context->getProcAddress(QLatin1String("glVertexAttrib3fARB"));
+    }
+
+    if (funcs->vertexAttrib3f)
+        funcs->vertexAttrib3f(indx, x, y, z);
+    else
+        funcs->vertexAttrib3f = qglfResolveVertexAttrib3f;
+}
+
+static void qglfResolveVertexAttrib3fv(GLuint indx, const GLfloat* values)
+{
+    typedef void (QGLF_APIENTRYP type_glVertexAttrib3fv)(GLuint indx, const GLfloat* values);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->vertexAttrib3fv = (type_glVertexAttrib3fv)
+        context->getProcAddress(QLatin1String("glVertexAttrib3fv"));
+    if (!funcs->vertexAttrib3fv) {
+        funcs->vertexAttrib3fv = (type_glVertexAttrib3fv)
+            context->getProcAddress(QLatin1String("glVertexAttrib3fvARB"));
+    }
+
+    if (funcs->vertexAttrib3fv)
+        funcs->vertexAttrib3fv(indx, values);
+    else
+        funcs->vertexAttrib3fv = qglfResolveVertexAttrib3fv;
+}
+
+static void qglfResolveVertexAttrib4f(GLuint indx, GLfloat x, GLfloat y, GLfloat z, GLfloat w)
+{
+    typedef void (QGLF_APIENTRYP type_glVertexAttrib4f)(GLuint indx, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->vertexAttrib4f = (type_glVertexAttrib4f)
+        context->getProcAddress(QLatin1String("glVertexAttrib4f"));
+    if (!funcs->vertexAttrib4f) {
+        funcs->vertexAttrib4f = (type_glVertexAttrib4f)
+            context->getProcAddress(QLatin1String("glVertexAttrib4fARB"));
+    }
+
+    if (funcs->vertexAttrib4f)
+        funcs->vertexAttrib4f(indx, x, y, z, w);
+    else
+        funcs->vertexAttrib4f = qglfResolveVertexAttrib4f;
+}
+
+static void qglfResolveVertexAttrib4fv(GLuint indx, const GLfloat* values)
+{
+    typedef void (QGLF_APIENTRYP type_glVertexAttrib4fv)(GLuint indx, const GLfloat* values);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->vertexAttrib4fv = (type_glVertexAttrib4fv)
+        context->getProcAddress(QLatin1String("glVertexAttrib4fv"));
+    if (!funcs->vertexAttrib4fv) {
+        funcs->vertexAttrib4fv = (type_glVertexAttrib4fv)
+            context->getProcAddress(QLatin1String("glVertexAttrib4fvARB"));
+    }
+
+    if (funcs->vertexAttrib4fv)
+        funcs->vertexAttrib4fv(indx, values);
+    else
+        funcs->vertexAttrib4fv = qglfResolveVertexAttrib4fv;
+}
+
+static void qglfResolveVertexAttribPointer(GLuint indx, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const void* ptr)
+{
+    typedef void (QGLF_APIENTRYP type_glVertexAttribPointer)(GLuint indx, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const void* ptr);
+
+    const QGLContext *context = QGLContext::currentContext();
+    QGLFunctionsPrivate *funcs = qt_gl_functions(context);
+
+    funcs->vertexAttribPointer = (type_glVertexAttribPointer)
+        context->getProcAddress(QLatin1String("glVertexAttribPointer"));
+    if (!funcs->vertexAttribPointer) {
+        funcs->vertexAttribPointer = (type_glVertexAttribPointer)
+            context->getProcAddress(QLatin1String("glVertexAttribPointerARB"));
+    }
+
+    if (funcs->vertexAttribPointer)
+        funcs->vertexAttribPointer(indx, size, type, normalized, stride, ptr);
+    else
+        funcs->vertexAttribPointer = qglfResolveVertexAttribPointer;
+}
+
+#endif // !QT_OPENGL_ES_2
+
+QGLFunctionsPrivate::QGLFunctionsPrivate(const QGLContext *)
+{
+#ifndef QT_OPENGL_ES_2
+    activeTexture = qglfResolveActiveTexture;
+    attachShader = qglfResolveAttachShader;
+    bindAttribLocation = qglfResolveBindAttribLocation;
+    bindBuffer = qglfResolveBindBuffer;
+    bindFramebuffer = qglfResolveBindFramebuffer;
+    bindRenderbuffer = qglfResolveBindRenderbuffer;
+    blendColor = qglfResolveBlendColor;
+    blendEquation = qglfResolveBlendEquation;
+    blendEquationSeparate = qglfResolveBlendEquationSeparate;
+    blendFuncSeparate = qglfResolveBlendFuncSeparate;
+    bufferData = qglfResolveBufferData;
+    bufferSubData = qglfResolveBufferSubData;
+    checkFramebufferStatus = qglfResolveCheckFramebufferStatus;
+    compileShader = qglfResolveCompileShader;
+    compressedTexImage2D = qglfResolveCompressedTexImage2D;
+    compressedTexSubImage2D = qglfResolveCompressedTexSubImage2D;
+    createProgram = qglfResolveCreateProgram;
+    createShader = qglfResolveCreateShader;
+    deleteBuffers = qglfResolveDeleteBuffers;
+    deleteFramebuffers = qglfResolveDeleteFramebuffers;
+    deleteProgram = qglfResolveDeleteProgram;
+    deleteRenderbuffers = qglfResolveDeleteRenderbuffers;
+    deleteShader = qglfResolveDeleteShader;
+    detachShader = qglfResolveDetachShader;
+    disableVertexAttribArray = qglfResolveDisableVertexAttribArray;
+    enableVertexAttribArray = qglfResolveEnableVertexAttribArray;
+    framebufferRenderbuffer = qglfResolveFramebufferRenderbuffer;
+    framebufferTexture2D = qglfResolveFramebufferTexture2D;
+    genBuffers = qglfResolveGenBuffers;
+    generateMipmap = qglfResolveGenerateMipmap;
+    genFramebuffers = qglfResolveGenFramebuffers;
+    genRenderbuffers = qglfResolveGenRenderbuffers;
+    getActiveAttrib = qglfResolveGetActiveAttrib;
+    getActiveUniform = qglfResolveGetActiveUniform;
+    getAttachedShaders = qglfResolveGetAttachedShaders;
+    getAttribLocation = qglfResolveGetAttribLocation;
+    getBufferParameteriv = qglfResolveGetBufferParameteriv;
+    getFramebufferAttachmentParameteriv = qglfResolveGetFramebufferAttachmentParameteriv;
+    getProgramiv = qglfResolveGetProgramiv;
+    getProgramInfoLog = qglfResolveGetProgramInfoLog;
+    getRenderbufferParameteriv = qglfResolveGetRenderbufferParameteriv;
+    getShaderiv = qglfResolveGetShaderiv;
+    getShaderInfoLog = qglfResolveGetShaderInfoLog;
+    getShaderPrecisionFormat = qglfResolveGetShaderPrecisionFormat;
+    getShaderSource = qglfResolveGetShaderSource;
+    getUniformfv = qglfResolveGetUniformfv;
+    getUniformiv = qglfResolveGetUniformiv;
+    getUniformLocation = qglfResolveGetUniformLocation;
+    getVertexAttribfv = qglfResolveGetVertexAttribfv;
+    getVertexAttribiv = qglfResolveGetVertexAttribiv;
+    getVertexAttribPointerv = qglfResolveGetVertexAttribPointerv;
+    isBuffer = qglfResolveIsBuffer;
+    isFramebuffer = qglfResolveIsFramebuffer;
+    isProgram = qglfResolveIsProgram;
+    isRenderbuffer = qglfResolveIsRenderbuffer;
+    isShader = qglfResolveIsShader;
+    linkProgram = qglfResolveLinkProgram;
+    releaseShaderCompiler = qglfResolveReleaseShaderCompiler;
+    renderbufferStorage = qglfResolveRenderbufferStorage;
+    sampleCoverage = qglfResolveSampleCoverage;
+    shaderBinary = qglfResolveShaderBinary;
+    shaderSource = qglfResolveShaderSource;
+    stencilFuncSeparate = qglfResolveStencilFuncSeparate;
+    stencilMaskSeparate = qglfResolveStencilMaskSeparate;
+    stencilOpSeparate = qglfResolveStencilOpSeparate;
+    uniform1f = qglfResolveUniform1f;
+    uniform1fv = qglfResolveUniform1fv;
+    uniform1i = qglfResolveUniform1i;
+    uniform1iv = qglfResolveUniform1iv;
+    uniform2f = qglfResolveUniform2f;
+    uniform2fv = qglfResolveUniform2fv;
+    uniform2i = qglfResolveUniform2i;
+    uniform2iv = qglfResolveUniform2iv;
+    uniform3f = qglfResolveUniform3f;
+    uniform3fv = qglfResolveUniform3fv;
+    uniform3i = qglfResolveUniform3i;
+    uniform3iv = qglfResolveUniform3iv;
+    uniform4f = qglfResolveUniform4f;
+    uniform4fv = qglfResolveUniform4fv;
+    uniform4i = qglfResolveUniform4i;
+    uniform4iv = qglfResolveUniform4iv;
+    uniformMatrix2fv = qglfResolveUniformMatrix2fv;
+    uniformMatrix3fv = qglfResolveUniformMatrix3fv;
+    uniformMatrix4fv = qglfResolveUniformMatrix4fv;
+    useProgram = qglfResolveUseProgram;
+    validateProgram = qglfResolveValidateProgram;
+    vertexAttrib1f = qglfResolveVertexAttrib1f;
+    vertexAttrib1fv = qglfResolveVertexAttrib1fv;
+    vertexAttrib2f = qglfResolveVertexAttrib2f;
+    vertexAttrib2fv = qglfResolveVertexAttrib2fv;
+    vertexAttrib3f = qglfResolveVertexAttrib3f;
+    vertexAttrib3fv = qglfResolveVertexAttrib3fv;
+    vertexAttrib4f = qglfResolveVertexAttrib4f;
+    vertexAttrib4fv = qglfResolveVertexAttrib4fv;
+    vertexAttribPointer = qglfResolveVertexAttribPointer;
+#endif // !QT_OPENGL_ES_2
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/qglfunctions.h b/src/opengl/qglfunctions.h
new file mode 100644
index 0000000000..44d9bad9fa
--- /dev/null
+++ b/src/opengl/qglfunctions.h
@@ -0,0 +1,2295 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QGLFUNCTIONS_H
+#define QGLFUNCTIONS_H
+
+#ifdef __GLEW_H__
+#warning qglfunctions.h is not compatible with GLEW, GLEW defines will be undefined
+#warning To use GLEW with Qt, do not include <QtOpenGL> or <QGLFunctions> after glew.h
+#endif
+
+#include <QtOpenGL/qgl.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(OpenGL)
+
+// Types that aren't defined in all system's gl.h files.
+typedef ptrdiff_t qgl_GLintptr;
+typedef ptrdiff_t qgl_GLsizeiptr;
+
+#ifndef Q_WS_MAC
+# ifndef QGLF_APIENTRYP
+#   ifdef QGLF_APIENTRY
+#     define QGLF_APIENTRYP QGLF_APIENTRY *
+#   else
+#     define QGLF_APIENTRY
+#     define QGLF_APIENTRYP *
+#   endif
+# endif
+#else
+# define QGLF_APIENTRY
+# define QGLF_APIENTRYP *
+#endif
+
+struct QGLFunctionsPrivate;
+
+// Undefine any macros from GLEW, qglextensions_p.h, etc that
+// may interfere with the definition of QGLFunctions.
+#undef glActiveTexture
+#undef glAttachShader
+#undef glBindAttribLocation
+#undef glBindBuffer
+#undef glBindFramebuffer
+#undef glBindRenderbuffer
+#undef glBlendColor
+#undef glBlendEquation
+#undef glBlendEquationSeparate
+#undef glBlendFuncSeparate
+#undef glBufferData
+#undef glBufferSubData
+#undef glCheckFramebufferStatus
+#undef glClearDepthf
+#undef glCompileShader
+#undef glCompressedTexImage2D
+#undef glCompressedTexSubImage2D
+#undef glCreateProgram
+#undef glCreateShader
+#undef glDeleteBuffers
+#undef glDeleteFramebuffers
+#undef glDeleteProgram
+#undef glDeleteRenderbuffers
+#undef glDeleteShader
+#undef glDepthRangef
+#undef glDetachShader
+#undef glDisableVertexAttribArray
+#undef glEnableVertexAttribArray
+#undef glFramebufferRenderbuffer
+#undef glFramebufferTexture2D
+#undef glGenBuffers
+#undef glGenerateMipmap
+#undef glGenFramebuffers
+#undef glGenRenderbuffers
+#undef glGetActiveAttrib
+#undef glGetActiveUniform
+#undef glGetAttachedShaders
+#undef glGetAttribLocation
+#undef glGetBufferParameteriv
+#undef glGetFramebufferAttachmentParameteriv
+#undef glGetProgramiv
+#undef glGetProgramInfoLog
+#undef glGetRenderbufferParameteriv
+#undef glGetShaderiv
+#undef glGetShaderInfoLog
+#undef glGetShaderPrecisionFormat
+#undef glGetShaderSource
+#undef glGetUniformfv
+#undef glGetUniformiv
+#undef glGetUniformLocation
+#undef glGetVertexAttribfv
+#undef glGetVertexAttribiv
+#undef glGetVertexAttribPointerv
+#undef glIsBuffer
+#undef glIsFramebuffer
+#undef glIsProgram
+#undef glIsRenderbuffer
+#undef glIsShader
+#undef glLinkProgram
+#undef glReleaseShaderCompiler
+#undef glRenderbufferStorage
+#undef glSampleCoverage
+#undef glShaderBinary
+#undef glShaderSource
+#undef glStencilFuncSeparate
+#undef glStencilMaskSeparate
+#undef glStencilOpSeparate
+#undef glUniform1f
+#undef glUniform1fv
+#undef glUniform1i
+#undef glUniform1iv
+#undef glUniform2f
+#undef glUniform2fv
+#undef glUniform2i
+#undef glUniform2iv
+#undef glUniform3f
+#undef glUniform3fv
+#undef glUniform3i
+#undef glUniform3iv
+#undef glUniform4f
+#undef glUniform4fv
+#undef glUniform4i
+#undef glUniform4iv
+#undef glUniformMatrix2fv
+#undef glUniformMatrix3fv
+#undef glUniformMatrix4fv
+#undef glUseProgram
+#undef glValidateProgram
+#undef glVertexAttrib1f
+#undef glVertexAttrib1fv
+#undef glVertexAttrib2f
+#undef glVertexAttrib2fv
+#undef glVertexAttrib3f
+#undef glVertexAttrib3fv
+#undef glVertexAttrib4f
+#undef glVertexAttrib4fv
+#undef glVertexAttribPointer
+
+class Q_OPENGL_EXPORT QGLFunctions
+{
+public:
+    QGLFunctions();
+    explicit QGLFunctions(const QGLContext *context);
+    ~QGLFunctions() {}
+
+    enum OpenGLFeature
+    {
+        Multitexture          = 0x0001,
+        Shaders               = 0x0002,
+        Buffers               = 0x0004,
+        Framebuffers          = 0x0008,
+        BlendColor            = 0x0010,
+        BlendEquation         = 0x0020,
+        BlendEquationSeparate = 0x0040,
+        BlendFuncSeparate     = 0x0080,
+        BlendSubtract         = 0x0100,
+        CompressedTextures    = 0x0200,
+        Multisample           = 0x0400,
+        StencilSeparate       = 0x0800,
+        NPOTTextures          = 0x1000
+    };
+    Q_DECLARE_FLAGS(OpenGLFeatures, OpenGLFeature)
+
+    QGLFunctions::OpenGLFeatures openGLFeatures() const;
+    bool hasOpenGLFeature(QGLFunctions::OpenGLFeature feature) const;
+
+    void initializeGLFunctions(const QGLContext *context = 0);
+
+    void glActiveTexture(GLenum texture);
+    void glAttachShader(GLuint program, GLuint shader);
+    void glBindAttribLocation(GLuint program, GLuint index, const char* name);
+    void glBindBuffer(GLenum target, GLuint buffer);
+    void glBindFramebuffer(GLenum target, GLuint framebuffer);
+    void glBindRenderbuffer(GLenum target, GLuint renderbuffer);
+    void glBlendColor(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
+    void glBlendEquation(GLenum mode);
+    void glBlendEquationSeparate(GLenum modeRGB, GLenum modeAlpha);
+    void glBlendFuncSeparate(GLenum srcRGB, GLenum dstRGB, GLenum srcAlpha, GLenum dstAlpha);
+    void glBufferData(GLenum target, qgl_GLsizeiptr size, const void* data, GLenum usage);
+    void glBufferSubData(GLenum target, qgl_GLintptr offset, qgl_GLsizeiptr size, const void* data);
+    GLenum glCheckFramebufferStatus(GLenum target);
+    void glClearDepthf(GLclampf depth);
+    void glCompileShader(GLuint shader);
+    void glCompressedTexImage2D(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLint border, GLsizei imageSize, const void* data);
+    void glCompressedTexSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const void* data);
+    GLuint glCreateProgram();
+    GLuint glCreateShader(GLenum type);
+    void glDeleteBuffers(GLsizei n, const GLuint* buffers);
+    void glDeleteFramebuffers(GLsizei n, const GLuint* framebuffers);
+    void glDeleteProgram(GLuint program);
+    void glDeleteRenderbuffers(GLsizei n, const GLuint* renderbuffers);
+    void glDeleteShader(GLuint shader);
+    void glDepthRangef(GLclampf zNear, GLclampf zFar);
+    void glDetachShader(GLuint program, GLuint shader);
+    void glDisableVertexAttribArray(GLuint index);
+    void glEnableVertexAttribArray(GLuint index);
+    void glFramebufferRenderbuffer(GLenum target, GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer);
+    void glFramebufferTexture2D(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level);
+    void glGenBuffers(GLsizei n, GLuint* buffers);
+    void glGenerateMipmap(GLenum target);
+    void glGenFramebuffers(GLsizei n, GLuint* framebuffers);
+    void glGenRenderbuffers(GLsizei n, GLuint* renderbuffers);
+    void glGetActiveAttrib(GLuint program, GLuint index, GLsizei bufsize, GLsizei* length, GLint* size, GLenum* type, char* name);
+    void glGetActiveUniform(GLuint program, GLuint index, GLsizei bufsize, GLsizei* length, GLint* size, GLenum* type, char* name);
+    void glGetAttachedShaders(GLuint program, GLsizei maxcount, GLsizei* count, GLuint* shaders);
+    int glGetAttribLocation(GLuint program, const char* name);
+    void glGetBufferParameteriv(GLenum target, GLenum pname, GLint* params);
+    void glGetFramebufferAttachmentParameteriv(GLenum target, GLenum attachment, GLenum pname, GLint* params);
+    void glGetProgramiv(GLuint program, GLenum pname, GLint* params);
+    void glGetProgramInfoLog(GLuint program, GLsizei bufsize, GLsizei* length, char* infolog);
+    void glGetRenderbufferParameteriv(GLenum target, GLenum pname, GLint* params);
+    void glGetShaderiv(GLuint shader, GLenum pname, GLint* params);
+    void glGetShaderInfoLog(GLuint shader, GLsizei bufsize, GLsizei* length, char* infolog);
+    void glGetShaderPrecisionFormat(GLenum shadertype, GLenum precisiontype, GLint* range, GLint* precision);
+    void glGetShaderSource(GLuint shader, GLsizei bufsize, GLsizei* length, char* source);
+    void glGetUniformfv(GLuint program, GLint location, GLfloat* params);
+    void glGetUniformiv(GLuint program, GLint location, GLint* params);
+    int glGetUniformLocation(GLuint program, const char* name);
+    void glGetVertexAttribfv(GLuint index, GLenum pname, GLfloat* params);
+    void glGetVertexAttribiv(GLuint index, GLenum pname, GLint* params);
+    void glGetVertexAttribPointerv(GLuint index, GLenum pname, void** pointer);
+    GLboolean glIsBuffer(GLuint buffer);
+    GLboolean glIsFramebuffer(GLuint framebuffer);
+    GLboolean glIsProgram(GLuint program);
+    GLboolean glIsRenderbuffer(GLuint renderbuffer);
+    GLboolean glIsShader(GLuint shader);
+    void glLinkProgram(GLuint program);
+    void glReleaseShaderCompiler();
+    void glRenderbufferStorage(GLenum target, GLenum internalformat, GLsizei width, GLsizei height);
+    void glSampleCoverage(GLclampf value, GLboolean invert);
+    void glShaderBinary(GLint n, const GLuint* shaders, GLenum binaryformat, const void* binary, GLint length);
+    void glShaderSource(GLuint shader, GLsizei count, const char** string, const GLint* length);
+    void glStencilFuncSeparate(GLenum face, GLenum func, GLint ref, GLuint mask);
+    void glStencilMaskSeparate(GLenum face, GLuint mask);
+    void glStencilOpSeparate(GLenum face, GLenum fail, GLenum zfail, GLenum zpass);
+    void glUniform1f(GLint location, GLfloat x);
+    void glUniform1fv(GLint location, GLsizei count, const GLfloat* v);
+    void glUniform1i(GLint location, GLint x);
+    void glUniform1iv(GLint location, GLsizei count, const GLint* v);
+    void glUniform2f(GLint location, GLfloat x, GLfloat y);
+    void glUniform2fv(GLint location, GLsizei count, const GLfloat* v);
+    void glUniform2i(GLint location, GLint x, GLint y);
+    void glUniform2iv(GLint location, GLsizei count, const GLint* v);
+    void glUniform3f(GLint location, GLfloat x, GLfloat y, GLfloat z);
+    void glUniform3fv(GLint location, GLsizei count, const GLfloat* v);
+    void glUniform3i(GLint location, GLint x, GLint y, GLint z);
+    void glUniform3iv(GLint location, GLsizei count, const GLint* v);
+    void glUniform4f(GLint location, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
+    void glUniform4fv(GLint location, GLsizei count, const GLfloat* v);
+    void glUniform4i(GLint location, GLint x, GLint y, GLint z, GLint w);
+    void glUniform4iv(GLint location, GLsizei count, const GLint* v);
+    void glUniformMatrix2fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
+    void glUniformMatrix3fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
+    void glUniformMatrix4fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
+    void glUseProgram(GLuint program);
+    void glValidateProgram(GLuint program);
+    void glVertexAttrib1f(GLuint indx, GLfloat x);
+    void glVertexAttrib1fv(GLuint indx, const GLfloat* values);
+    void glVertexAttrib2f(GLuint indx, GLfloat x, GLfloat y);
+    void glVertexAttrib2fv(GLuint indx, const GLfloat* values);
+    void glVertexAttrib3f(GLuint indx, GLfloat x, GLfloat y, GLfloat z);
+    void glVertexAttrib3fv(GLuint indx, const GLfloat* values);
+    void glVertexAttrib4f(GLuint indx, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
+    void glVertexAttrib4fv(GLuint indx, const GLfloat* values);
+    void glVertexAttribPointer(GLuint indx, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const void* ptr);
+
+private:
+    QGLFunctionsPrivate *d_ptr;
+    static bool isInitialized(const QGLFunctionsPrivate *d) { return d != 0; }
+};
+
+Q_DECLARE_OPERATORS_FOR_FLAGS(QGLFunctions::OpenGLFeatures)
+
+struct QGLFunctionsPrivate
+{
+    QGLFunctionsPrivate(const QGLContext *context = 0);
+
+#ifndef QT_OPENGL_ES_2
+    void (QGLF_APIENTRYP activeTexture)(GLenum texture);
+    void (QGLF_APIENTRYP attachShader)(GLuint program, GLuint shader);
+    void (QGLF_APIENTRYP bindAttribLocation)(GLuint program, GLuint index, const char* name);
+    void (QGLF_APIENTRYP bindBuffer)(GLenum target, GLuint buffer);
+    void (QGLF_APIENTRYP bindFramebuffer)(GLenum target, GLuint framebuffer);
+    void (QGLF_APIENTRYP bindRenderbuffer)(GLenum target, GLuint renderbuffer);
+    void (QGLF_APIENTRYP blendColor)(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
+    void (QGLF_APIENTRYP blendEquation)(GLenum mode);
+    void (QGLF_APIENTRYP blendEquationSeparate)(GLenum modeRGB, GLenum modeAlpha);
+    void (QGLF_APIENTRYP blendFuncSeparate)(GLenum srcRGB, GLenum dstRGB, GLenum srcAlpha, GLenum dstAlpha);
+    void (QGLF_APIENTRYP bufferData)(GLenum target, qgl_GLsizeiptr size, const void* data, GLenum usage);
+    void (QGLF_APIENTRYP bufferSubData)(GLenum target, qgl_GLintptr offset, qgl_GLsizeiptr size, const void* data);
+    GLenum (QGLF_APIENTRYP checkFramebufferStatus)(GLenum target);
+    void (QGLF_APIENTRYP compileShader)(GLuint shader);
+    void (QGLF_APIENTRYP compressedTexImage2D)(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLint border, GLsizei imageSize, const void* data);
+    void (QGLF_APIENTRYP compressedTexSubImage2D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const void* data);
+    GLuint (QGLF_APIENTRYP createProgram)();
+    GLuint (QGLF_APIENTRYP createShader)(GLenum type);
+    void (QGLF_APIENTRYP deleteBuffers)(GLsizei n, const GLuint* buffers);
+    void (QGLF_APIENTRYP deleteFramebuffers)(GLsizei n, const GLuint* framebuffers);
+    void (QGLF_APIENTRYP deleteProgram)(GLuint program);
+    void (QGLF_APIENTRYP deleteRenderbuffers)(GLsizei n, const GLuint* renderbuffers);
+    void (QGLF_APIENTRYP deleteShader)(GLuint shader);
+    void (QGLF_APIENTRYP detachShader)(GLuint program, GLuint shader);
+    void (QGLF_APIENTRYP disableVertexAttribArray)(GLuint index);
+    void (QGLF_APIENTRYP enableVertexAttribArray)(GLuint index);
+    void (QGLF_APIENTRYP framebufferRenderbuffer)(GLenum target, GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer);
+    void (QGLF_APIENTRYP framebufferTexture2D)(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level);
+    void (QGLF_APIENTRYP genBuffers)(GLsizei n, GLuint* buffers);
+    void (QGLF_APIENTRYP generateMipmap)(GLenum target);
+    void (QGLF_APIENTRYP genFramebuffers)(GLsizei n, GLuint* framebuffers);
+    void (QGLF_APIENTRYP genRenderbuffers)(GLsizei n, GLuint* renderbuffers);
+    void (QGLF_APIENTRYP getActiveAttrib)(GLuint program, GLuint index, GLsizei bufsize, GLsizei* length, GLint* size, GLenum* type, char* name);
+    void (QGLF_APIENTRYP getActiveUniform)(GLuint program, GLuint index, GLsizei bufsize, GLsizei* length, GLint* size, GLenum* type, char* name);
+    void (QGLF_APIENTRYP getAttachedShaders)(GLuint program, GLsizei maxcount, GLsizei* count, GLuint* shaders);
+    int (QGLF_APIENTRYP getAttribLocation)(GLuint program, const char* name);
+    void (QGLF_APIENTRYP getBufferParameteriv)(GLenum target, GLenum pname, GLint* params);
+    void (QGLF_APIENTRYP getFramebufferAttachmentParameteriv)(GLenum target, GLenum attachment, GLenum pname, GLint* params);
+    void (QGLF_APIENTRYP getProgramiv)(GLuint program, GLenum pname, GLint* params);
+    void (QGLF_APIENTRYP getProgramInfoLog)(GLuint program, GLsizei bufsize, GLsizei* length, char* infolog);
+    void (QGLF_APIENTRYP getRenderbufferParameteriv)(GLenum target, GLenum pname, GLint* params);
+    void (QGLF_APIENTRYP getShaderiv)(GLuint shader, GLenum pname, GLint* params);
+    void (QGLF_APIENTRYP getShaderInfoLog)(GLuint shader, GLsizei bufsize, GLsizei* length, char* infolog);
+    void (QGLF_APIENTRYP getShaderPrecisionFormat)(GLenum shadertype, GLenum precisiontype, GLint* range, GLint* precision);
+    void (QGLF_APIENTRYP getShaderSource)(GLuint shader, GLsizei bufsize, GLsizei* length, char* source);
+    void (QGLF_APIENTRYP getUniformfv)(GLuint program, GLint location, GLfloat* params);
+    void (QGLF_APIENTRYP getUniformiv)(GLuint program, GLint location, GLint* params);
+    int (QGLF_APIENTRYP getUniformLocation)(GLuint program, const char* name);
+    void (QGLF_APIENTRYP getVertexAttribfv)(GLuint index, GLenum pname, GLfloat* params);
+    void (QGLF_APIENTRYP getVertexAttribiv)(GLuint index, GLenum pname, GLint* params);
+    void (QGLF_APIENTRYP getVertexAttribPointerv)(GLuint index, GLenum pname, void** pointer);
+    GLboolean (QGLF_APIENTRYP isBuffer)(GLuint buffer);
+    GLboolean (QGLF_APIENTRYP isFramebuffer)(GLuint framebuffer);
+    GLboolean (QGLF_APIENTRYP isProgram)(GLuint program);
+    GLboolean (QGLF_APIENTRYP isRenderbuffer)(GLuint renderbuffer);
+    GLboolean (QGLF_APIENTRYP isShader)(GLuint shader);
+    void (QGLF_APIENTRYP linkProgram)(GLuint program);
+    void (QGLF_APIENTRYP releaseShaderCompiler)();
+    void (QGLF_APIENTRYP renderbufferStorage)(GLenum target, GLenum internalformat, GLsizei width, GLsizei height);
+    void (QGLF_APIENTRYP sampleCoverage)(GLclampf value, GLboolean invert);
+    void (QGLF_APIENTRYP shaderBinary)(GLint n, const GLuint* shaders, GLenum binaryformat, const void* binary, GLint length);
+    void (QGLF_APIENTRYP shaderSource)(GLuint shader, GLsizei count, const char** string, const GLint* length);
+    void (QGLF_APIENTRYP stencilFuncSeparate)(GLenum face, GLenum func, GLint ref, GLuint mask);
+    void (QGLF_APIENTRYP stencilMaskSeparate)(GLenum face, GLuint mask);
+    void (QGLF_APIENTRYP stencilOpSeparate)(GLenum face, GLenum fail, GLenum zfail, GLenum zpass);
+    void (QGLF_APIENTRYP uniform1f)(GLint location, GLfloat x);
+    void (QGLF_APIENTRYP uniform1fv)(GLint location, GLsizei count, const GLfloat* v);
+    void (QGLF_APIENTRYP uniform1i)(GLint location, GLint x);
+    void (QGLF_APIENTRYP uniform1iv)(GLint location, GLsizei count, const GLint* v);
+    void (QGLF_APIENTRYP uniform2f)(GLint location, GLfloat x, GLfloat y);
+    void (QGLF_APIENTRYP uniform2fv)(GLint location, GLsizei count, const GLfloat* v);
+    void (QGLF_APIENTRYP uniform2i)(GLint location, GLint x, GLint y);
+    void (QGLF_APIENTRYP uniform2iv)(GLint location, GLsizei count, const GLint* v);
+    void (QGLF_APIENTRYP uniform3f)(GLint location, GLfloat x, GLfloat y, GLfloat z);
+    void (QGLF_APIENTRYP uniform3fv)(GLint location, GLsizei count, const GLfloat* v);
+    void (QGLF_APIENTRYP uniform3i)(GLint location, GLint x, GLint y, GLint z);
+    void (QGLF_APIENTRYP uniform3iv)(GLint location, GLsizei count, const GLint* v);
+    void (QGLF_APIENTRYP uniform4f)(GLint location, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
+    void (QGLF_APIENTRYP uniform4fv)(GLint location, GLsizei count, const GLfloat* v);
+    void (QGLF_APIENTRYP uniform4i)(GLint location, GLint x, GLint y, GLint z, GLint w);
+    void (QGLF_APIENTRYP uniform4iv)(GLint location, GLsizei count, const GLint* v);
+    void (QGLF_APIENTRYP uniformMatrix2fv)(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
+    void (QGLF_APIENTRYP uniformMatrix3fv)(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
+    void (QGLF_APIENTRYP uniformMatrix4fv)(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
+    void (QGLF_APIENTRYP useProgram)(GLuint program);
+    void (QGLF_APIENTRYP validateProgram)(GLuint program);
+    void (QGLF_APIENTRYP vertexAttrib1f)(GLuint indx, GLfloat x);
+    void (QGLF_APIENTRYP vertexAttrib1fv)(GLuint indx, const GLfloat* values);
+    void (QGLF_APIENTRYP vertexAttrib2f)(GLuint indx, GLfloat x, GLfloat y);
+    void (QGLF_APIENTRYP vertexAttrib2fv)(GLuint indx, const GLfloat* values);
+    void (QGLF_APIENTRYP vertexAttrib3f)(GLuint indx, GLfloat x, GLfloat y, GLfloat z);
+    void (QGLF_APIENTRYP vertexAttrib3fv)(GLuint indx, const GLfloat* values);
+    void (QGLF_APIENTRYP vertexAttrib4f)(GLuint indx, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
+    void (QGLF_APIENTRYP vertexAttrib4fv)(GLuint indx, const GLfloat* values);
+    void (QGLF_APIENTRYP vertexAttribPointer)(GLuint indx, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const void* ptr);
+#endif
+};
+
+inline void QGLFunctions::glActiveTexture(GLenum texture)
+{
+#if defined(QT_OPENGL_ES_1) || defined(QT_OPENGL_ES_2)
+    ::glActiveTexture(texture);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->activeTexture(texture);
+#endif
+}
+
+inline void QGLFunctions::glAttachShader(GLuint program, GLuint shader)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glAttachShader(program, shader);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->attachShader(program, shader);
+#endif
+}
+
+inline void QGLFunctions::glBindAttribLocation(GLuint program, GLuint index, const char* name)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glBindAttribLocation(program, index, name);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->bindAttribLocation(program, index, name);
+#endif
+}
+
+inline void QGLFunctions::glBindBuffer(GLenum target, GLuint buffer)
+{
+#if defined(QT_OPENGL_ES_1) || defined(QT_OPENGL_ES_2)
+    ::glBindBuffer(target, buffer);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->bindBuffer(target, buffer);
+#endif
+}
+
+inline void QGLFunctions::glBindFramebuffer(GLenum target, GLuint framebuffer)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glBindFramebuffer(target, framebuffer);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->bindFramebuffer(target, framebuffer);
+#endif
+}
+
+inline void QGLFunctions::glBindRenderbuffer(GLenum target, GLuint renderbuffer)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glBindRenderbuffer(target, renderbuffer);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->bindRenderbuffer(target, renderbuffer);
+#endif
+}
+
+inline void QGLFunctions::glBlendColor(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glBlendColor(red, green, blue, alpha);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->blendColor(red, green, blue, alpha);
+#endif
+}
+
+inline void QGLFunctions::glBlendEquation(GLenum mode)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glBlendEquation(mode);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->blendEquation(mode);
+#endif
+}
+
+inline void QGLFunctions::glBlendEquationSeparate(GLenum modeRGB, GLenum modeAlpha)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glBlendEquationSeparate(modeRGB, modeAlpha);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->blendEquationSeparate(modeRGB, modeAlpha);
+#endif
+}
+
+inline void QGLFunctions::glBlendFuncSeparate(GLenum srcRGB, GLenum dstRGB, GLenum srcAlpha, GLenum dstAlpha)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glBlendFuncSeparate(srcRGB, dstRGB, srcAlpha, dstAlpha);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->blendFuncSeparate(srcRGB, dstRGB, srcAlpha, dstAlpha);
+#endif
+}
+
+inline void QGLFunctions::glBufferData(GLenum target, qgl_GLsizeiptr size, const void* data, GLenum usage)
+{
+#if defined(QT_OPENGL_ES_1) || defined(QT_OPENGL_ES_2)
+    ::glBufferData(target, size, data, usage);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->bufferData(target, size, data, usage);
+#endif
+}
+
+inline void QGLFunctions::glBufferSubData(GLenum target, qgl_GLintptr offset, qgl_GLsizeiptr size, const void* data)
+{
+#if defined(QT_OPENGL_ES_1) || defined(QT_OPENGL_ES_2)
+    ::glBufferSubData(target, offset, size, data);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->bufferSubData(target, offset, size, data);
+#endif
+}
+
+inline GLenum QGLFunctions::glCheckFramebufferStatus(GLenum target)
+{
+#if defined(QT_OPENGL_ES_2)
+    return ::glCheckFramebufferStatus(target);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    return d_ptr->checkFramebufferStatus(target);
+#endif
+}
+
+inline void QGLFunctions::glClearDepthf(GLclampf depth)
+{
+#ifndef QT_OPENGL_ES
+    ::glClearDepth(depth);
+#else
+    ::glClearDepthf(depth);
+#endif
+}
+
+inline void QGLFunctions::glCompileShader(GLuint shader)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glCompileShader(shader);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->compileShader(shader);
+#endif
+}
+
+inline void QGLFunctions::glCompressedTexImage2D(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLint border, GLsizei imageSize, const void* data)
+{
+#if defined(QT_OPENGL_ES_1) || defined(QT_OPENGL_ES_2)
+    ::glCompressedTexImage2D(target, level, internalformat, width, height, border, imageSize, data);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->compressedTexImage2D(target, level, internalformat, width, height, border, imageSize, data);
+#endif
+}
+
+inline void QGLFunctions::glCompressedTexSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const void* data)
+{
+#if defined(QT_OPENGL_ES_1) || defined(QT_OPENGL_ES_2)
+    ::glCompressedTexSubImage2D(target, level, xoffset, yoffset, width, height, format, imageSize, data);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->compressedTexSubImage2D(target, level, xoffset, yoffset, width, height, format, imageSize, data);
+#endif
+}
+
+inline GLuint QGLFunctions::glCreateProgram()
+{
+#if defined(QT_OPENGL_ES_2)
+    return ::glCreateProgram();
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    return d_ptr->createProgram();
+#endif
+}
+
+inline GLuint QGLFunctions::glCreateShader(GLenum type)
+{
+#if defined(QT_OPENGL_ES_2)
+    return ::glCreateShader(type);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    return d_ptr->createShader(type);
+#endif
+}
+
+inline void QGLFunctions::glDeleteBuffers(GLsizei n, const GLuint* buffers)
+{
+#if defined(QT_OPENGL_ES_1) || defined(QT_OPENGL_ES_2)
+    ::glDeleteBuffers(n, buffers);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->deleteBuffers(n, buffers);
+#endif
+}
+
+inline void QGLFunctions::glDeleteFramebuffers(GLsizei n, const GLuint* framebuffers)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glDeleteFramebuffers(n, framebuffers);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->deleteFramebuffers(n, framebuffers);
+#endif
+}
+
+inline void QGLFunctions::glDeleteProgram(GLuint program)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glDeleteProgram(program);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->deleteProgram(program);
+#endif
+}
+
+inline void QGLFunctions::glDeleteRenderbuffers(GLsizei n, const GLuint* renderbuffers)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glDeleteRenderbuffers(n, renderbuffers);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->deleteRenderbuffers(n, renderbuffers);
+#endif
+}
+
+inline void QGLFunctions::glDeleteShader(GLuint shader)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glDeleteShader(shader);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->deleteShader(shader);
+#endif
+}
+
+inline void QGLFunctions::glDepthRangef(GLclampf zNear, GLclampf zFar)
+{
+#ifndef QT_OPENGL_ES
+    ::glDepthRange(zNear, zFar);
+#else
+    ::glDepthRangef(zNear, zFar);
+#endif
+}
+
+inline void QGLFunctions::glDetachShader(GLuint program, GLuint shader)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glDetachShader(program, shader);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->detachShader(program, shader);
+#endif
+}
+
+inline void QGLFunctions::glDisableVertexAttribArray(GLuint index)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glDisableVertexAttribArray(index);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->disableVertexAttribArray(index);
+#endif
+}
+
+inline void QGLFunctions::glEnableVertexAttribArray(GLuint index)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glEnableVertexAttribArray(index);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->enableVertexAttribArray(index);
+#endif
+}
+
+inline void QGLFunctions::glFramebufferRenderbuffer(GLenum target, GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glFramebufferRenderbuffer(target, attachment, renderbuffertarget, renderbuffer);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->framebufferRenderbuffer(target, attachment, renderbuffertarget, renderbuffer);
+#endif
+}
+
+inline void QGLFunctions::glFramebufferTexture2D(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glFramebufferTexture2D(target, attachment, textarget, texture, level);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->framebufferTexture2D(target, attachment, textarget, texture, level);
+#endif
+}
+
+inline void QGLFunctions::glGenBuffers(GLsizei n, GLuint* buffers)
+{
+#if defined(QT_OPENGL_ES_1) || defined(QT_OPENGL_ES_2)
+    ::glGenBuffers(n, buffers);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->genBuffers(n, buffers);
+#endif
+}
+
+inline void QGLFunctions::glGenerateMipmap(GLenum target)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glGenerateMipmap(target);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->generateMipmap(target);
+#endif
+}
+
+inline void QGLFunctions::glGenFramebuffers(GLsizei n, GLuint* framebuffers)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glGenFramebuffers(n, framebuffers);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->genFramebuffers(n, framebuffers);
+#endif
+}
+
+inline void QGLFunctions::glGenRenderbuffers(GLsizei n, GLuint* renderbuffers)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glGenRenderbuffers(n, renderbuffers);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->genRenderbuffers(n, renderbuffers);
+#endif
+}
+
+inline void QGLFunctions::glGetActiveAttrib(GLuint program, GLuint index, GLsizei bufsize, GLsizei* length, GLint* size, GLenum* type, char* name)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glGetActiveAttrib(program, index, bufsize, length, size, type, name);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->getActiveAttrib(program, index, bufsize, length, size, type, name);
+#endif
+}
+
+inline void QGLFunctions::glGetActiveUniform(GLuint program, GLuint index, GLsizei bufsize, GLsizei* length, GLint* size, GLenum* type, char* name)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glGetActiveUniform(program, index, bufsize, length, size, type, name);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->getActiveUniform(program, index, bufsize, length, size, type, name);
+#endif
+}
+
+inline void QGLFunctions::glGetAttachedShaders(GLuint program, GLsizei maxcount, GLsizei* count, GLuint* shaders)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glGetAttachedShaders(program, maxcount, count, shaders);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->getAttachedShaders(program, maxcount, count, shaders);
+#endif
+}
+
+inline int QGLFunctions::glGetAttribLocation(GLuint program, const char* name)
+{
+#if defined(QT_OPENGL_ES_2)
+    return ::glGetAttribLocation(program, name);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    return d_ptr->getAttribLocation(program, name);
+#endif
+}
+
+inline void QGLFunctions::glGetBufferParameteriv(GLenum target, GLenum pname, GLint* params)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glGetBufferParameteriv(target, pname, params);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->getBufferParameteriv(target, pname, params);
+#endif
+}
+
+inline void QGLFunctions::glGetFramebufferAttachmentParameteriv(GLenum target, GLenum attachment, GLenum pname, GLint* params)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glGetFramebufferAttachmentParameteriv(target, attachment, pname, params);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->getFramebufferAttachmentParameteriv(target, attachment, pname, params);
+#endif
+}
+
+inline void QGLFunctions::glGetProgramiv(GLuint program, GLenum pname, GLint* params)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glGetProgramiv(program, pname, params);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->getProgramiv(program, pname, params);
+#endif
+}
+
+inline void QGLFunctions::glGetProgramInfoLog(GLuint program, GLsizei bufsize, GLsizei* length, char* infolog)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glGetProgramInfoLog(program, bufsize, length, infolog);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->getProgramInfoLog(program, bufsize, length, infolog);
+#endif
+}
+
+inline void QGLFunctions::glGetRenderbufferParameteriv(GLenum target, GLenum pname, GLint* params)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glGetRenderbufferParameteriv(target, pname, params);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->getRenderbufferParameteriv(target, pname, params);
+#endif
+}
+
+inline void QGLFunctions::glGetShaderiv(GLuint shader, GLenum pname, GLint* params)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glGetShaderiv(shader, pname, params);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->getShaderiv(shader, pname, params);
+#endif
+}
+
+inline void QGLFunctions::glGetShaderInfoLog(GLuint shader, GLsizei bufsize, GLsizei* length, char* infolog)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glGetShaderInfoLog(shader, bufsize, length, infolog);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->getShaderInfoLog(shader, bufsize, length, infolog);
+#endif
+}
+
+inline void QGLFunctions::glGetShaderPrecisionFormat(GLenum shadertype, GLenum precisiontype, GLint* range, GLint* precision)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glGetShaderPrecisionFormat(shadertype, precisiontype, range, precision);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->getShaderPrecisionFormat(shadertype, precisiontype, range, precision);
+#endif
+}
+
+inline void QGLFunctions::glGetShaderSource(GLuint shader, GLsizei bufsize, GLsizei* length, char* source)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glGetShaderSource(shader, bufsize, length, source);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->getShaderSource(shader, bufsize, length, source);
+#endif
+}
+
+inline void QGLFunctions::glGetUniformfv(GLuint program, GLint location, GLfloat* params)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glGetUniformfv(program, location, params);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->getUniformfv(program, location, params);
+#endif
+}
+
+inline void QGLFunctions::glGetUniformiv(GLuint program, GLint location, GLint* params)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glGetUniformiv(program, location, params);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->getUniformiv(program, location, params);
+#endif
+}
+
+inline int QGLFunctions::glGetUniformLocation(GLuint program, const char* name)
+{
+#if defined(QT_OPENGL_ES_2)
+    return ::glGetUniformLocation(program, name);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    return d_ptr->getUniformLocation(program, name);
+#endif
+}
+
+inline void QGLFunctions::glGetVertexAttribfv(GLuint index, GLenum pname, GLfloat* params)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glGetVertexAttribfv(index, pname, params);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->getVertexAttribfv(index, pname, params);
+#endif
+}
+
+inline void QGLFunctions::glGetVertexAttribiv(GLuint index, GLenum pname, GLint* params)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glGetVertexAttribiv(index, pname, params);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->getVertexAttribiv(index, pname, params);
+#endif
+}
+
+inline void QGLFunctions::glGetVertexAttribPointerv(GLuint index, GLenum pname, void** pointer)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glGetVertexAttribPointerv(index, pname, pointer);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->getVertexAttribPointerv(index, pname, pointer);
+#endif
+}
+
+inline GLboolean QGLFunctions::glIsBuffer(GLuint buffer)
+{
+#if defined(QT_OPENGL_ES_1) || defined(QT_OPENGL_ES_2)
+    return ::glIsBuffer(buffer);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    return d_ptr->isBuffer(buffer);
+#endif
+}
+
+inline GLboolean QGLFunctions::glIsFramebuffer(GLuint framebuffer)
+{
+#if defined(QT_OPENGL_ES_2)
+    return ::glIsFramebuffer(framebuffer);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    return d_ptr->isFramebuffer(framebuffer);
+#endif
+}
+
+inline GLboolean QGLFunctions::glIsProgram(GLuint program)
+{
+#if defined(QT_OPENGL_ES_2)
+    return ::glIsProgram(program);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    return d_ptr->isProgram(program);
+#endif
+}
+
+inline GLboolean QGLFunctions::glIsRenderbuffer(GLuint renderbuffer)
+{
+#if defined(QT_OPENGL_ES_2)
+    return ::glIsRenderbuffer(renderbuffer);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    return d_ptr->isRenderbuffer(renderbuffer);
+#endif
+}
+
+inline GLboolean QGLFunctions::glIsShader(GLuint shader)
+{
+#if defined(QT_OPENGL_ES_2)
+    return ::glIsShader(shader);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    return d_ptr->isShader(shader);
+#endif
+}
+
+inline void QGLFunctions::glLinkProgram(GLuint program)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glLinkProgram(program);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->linkProgram(program);
+#endif
+}
+
+inline void QGLFunctions::glReleaseShaderCompiler()
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glReleaseShaderCompiler();
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->releaseShaderCompiler();
+#endif
+}
+
+inline void QGLFunctions::glRenderbufferStorage(GLenum target, GLenum internalformat, GLsizei width, GLsizei height)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glRenderbufferStorage(target, internalformat, width, height);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->renderbufferStorage(target, internalformat, width, height);
+#endif
+}
+
+inline void QGLFunctions::glSampleCoverage(GLclampf value, GLboolean invert)
+{
+#if defined(QT_OPENGL_ES_1) || defined(QT_OPENGL_ES_2)
+    ::glSampleCoverage(value, invert);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->sampleCoverage(value, invert);
+#endif
+}
+
+inline void QGLFunctions::glShaderBinary(GLint n, const GLuint* shaders, GLenum binaryformat, const void* binary, GLint length)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glShaderBinary(n, shaders, binaryformat, binary, length);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->shaderBinary(n, shaders, binaryformat, binary, length);
+#endif
+}
+
+inline void QGLFunctions::glShaderSource(GLuint shader, GLsizei count, const char** string, const GLint* length)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glShaderSource(shader, count, string, length);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->shaderSource(shader, count, string, length);
+#endif
+}
+
+inline void QGLFunctions::glStencilFuncSeparate(GLenum face, GLenum func, GLint ref, GLuint mask)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glStencilFuncSeparate(face, func, ref, mask);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->stencilFuncSeparate(face, func, ref, mask);
+#endif
+}
+
+inline void QGLFunctions::glStencilMaskSeparate(GLenum face, GLuint mask)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glStencilMaskSeparate(face, mask);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->stencilMaskSeparate(face, mask);
+#endif
+}
+
+inline void QGLFunctions::glStencilOpSeparate(GLenum face, GLenum fail, GLenum zfail, GLenum zpass)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glStencilOpSeparate(face, fail, zfail, zpass);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->stencilOpSeparate(face, fail, zfail, zpass);
+#endif
+}
+
+inline void QGLFunctions::glUniform1f(GLint location, GLfloat x)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glUniform1f(location, x);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->uniform1f(location, x);
+#endif
+}
+
+inline void QGLFunctions::glUniform1fv(GLint location, GLsizei count, const GLfloat* v)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glUniform1fv(location, count, v);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->uniform1fv(location, count, v);
+#endif
+}
+
+inline void QGLFunctions::glUniform1i(GLint location, GLint x)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glUniform1i(location, x);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->uniform1i(location, x);
+#endif
+}
+
+inline void QGLFunctions::glUniform1iv(GLint location, GLsizei count, const GLint* v)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glUniform1iv(location, count, v);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->uniform1iv(location, count, v);
+#endif
+}
+
+inline void QGLFunctions::glUniform2f(GLint location, GLfloat x, GLfloat y)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glUniform2f(location, x, y);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->uniform2f(location, x, y);
+#endif
+}
+
+inline void QGLFunctions::glUniform2fv(GLint location, GLsizei count, const GLfloat* v)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glUniform2fv(location, count, v);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->uniform2fv(location, count, v);
+#endif
+}
+
+inline void QGLFunctions::glUniform2i(GLint location, GLint x, GLint y)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glUniform2i(location, x, y);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->uniform2i(location, x, y);
+#endif
+}
+
+inline void QGLFunctions::glUniform2iv(GLint location, GLsizei count, const GLint* v)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glUniform2iv(location, count, v);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->uniform2iv(location, count, v);
+#endif
+}
+
+inline void QGLFunctions::glUniform3f(GLint location, GLfloat x, GLfloat y, GLfloat z)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glUniform3f(location, x, y, z);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->uniform3f(location, x, y, z);
+#endif
+}
+
+inline void QGLFunctions::glUniform3fv(GLint location, GLsizei count, const GLfloat* v)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glUniform3fv(location, count, v);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->uniform3fv(location, count, v);
+#endif
+}
+
+inline void QGLFunctions::glUniform3i(GLint location, GLint x, GLint y, GLint z)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glUniform3i(location, x, y, z);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->uniform3i(location, x, y, z);
+#endif
+}
+
+inline void QGLFunctions::glUniform3iv(GLint location, GLsizei count, const GLint* v)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glUniform3iv(location, count, v);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->uniform3iv(location, count, v);
+#endif
+}
+
+inline void QGLFunctions::glUniform4f(GLint location, GLfloat x, GLfloat y, GLfloat z, GLfloat w)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glUniform4f(location, x, y, z, w);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->uniform4f(location, x, y, z, w);
+#endif
+}
+
+inline void QGLFunctions::glUniform4fv(GLint location, GLsizei count, const GLfloat* v)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glUniform4fv(location, count, v);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->uniform4fv(location, count, v);
+#endif
+}
+
+inline void QGLFunctions::glUniform4i(GLint location, GLint x, GLint y, GLint z, GLint w)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glUniform4i(location, x, y, z, w);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->uniform4i(location, x, y, z, w);
+#endif
+}
+
+inline void QGLFunctions::glUniform4iv(GLint location, GLsizei count, const GLint* v)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glUniform4iv(location, count, v);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->uniform4iv(location, count, v);
+#endif
+}
+
+inline void QGLFunctions::glUniformMatrix2fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glUniformMatrix2fv(location, count, transpose, value);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->uniformMatrix2fv(location, count, transpose, value);
+#endif
+}
+
+inline void QGLFunctions::glUniformMatrix3fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glUniformMatrix3fv(location, count, transpose, value);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->uniformMatrix3fv(location, count, transpose, value);
+#endif
+}
+
+inline void QGLFunctions::glUniformMatrix4fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glUniformMatrix4fv(location, count, transpose, value);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->uniformMatrix4fv(location, count, transpose, value);
+#endif
+}
+
+inline void QGLFunctions::glUseProgram(GLuint program)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glUseProgram(program);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->useProgram(program);
+#endif
+}
+
+inline void QGLFunctions::glValidateProgram(GLuint program)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glValidateProgram(program);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->validateProgram(program);
+#endif
+}
+
+inline void QGLFunctions::glVertexAttrib1f(GLuint indx, GLfloat x)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glVertexAttrib1f(indx, x);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->vertexAttrib1f(indx, x);
+#endif
+}
+
+inline void QGLFunctions::glVertexAttrib1fv(GLuint indx, const GLfloat* values)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glVertexAttrib1fv(indx, values);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->vertexAttrib1fv(indx, values);
+#endif
+}
+
+inline void QGLFunctions::glVertexAttrib2f(GLuint indx, GLfloat x, GLfloat y)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glVertexAttrib2f(indx, x, y);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->vertexAttrib2f(indx, x, y);
+#endif
+}
+
+inline void QGLFunctions::glVertexAttrib2fv(GLuint indx, const GLfloat* values)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glVertexAttrib2fv(indx, values);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->vertexAttrib2fv(indx, values);
+#endif
+}
+
+inline void QGLFunctions::glVertexAttrib3f(GLuint indx, GLfloat x, GLfloat y, GLfloat z)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glVertexAttrib3f(indx, x, y, z);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->vertexAttrib3f(indx, x, y, z);
+#endif
+}
+
+inline void QGLFunctions::glVertexAttrib3fv(GLuint indx, const GLfloat* values)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glVertexAttrib3fv(indx, values);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->vertexAttrib3fv(indx, values);
+#endif
+}
+
+inline void QGLFunctions::glVertexAttrib4f(GLuint indx, GLfloat x, GLfloat y, GLfloat z, GLfloat w)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glVertexAttrib4f(indx, x, y, z, w);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->vertexAttrib4f(indx, x, y, z, w);
+#endif
+}
+
+inline void QGLFunctions::glVertexAttrib4fv(GLuint indx, const GLfloat* values)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glVertexAttrib4fv(indx, values);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->vertexAttrib4fv(indx, values);
+#endif
+}
+
+inline void QGLFunctions::glVertexAttribPointer(GLuint indx, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const void* ptr)
+{
+#if defined(QT_OPENGL_ES_2)
+    ::glVertexAttribPointer(indx, size, type, normalized, stride, ptr);
+#else
+    Q_ASSERT(QGLFunctions::isInitialized(d_ptr));
+    d_ptr->vertexAttribPointer(indx, size, type, normalized, stride, ptr);
+#endif
+}
+
+#ifndef GL_ACTIVE_ATTRIBUTE_MAX_LENGTH
+#define GL_ACTIVE_ATTRIBUTE_MAX_LENGTH 0x8B8A
+#endif
+#ifndef GL_ACTIVE_ATTRIBUTES
+#define GL_ACTIVE_ATTRIBUTES 0x8B89
+#endif
+#ifndef GL_ACTIVE_TEXTURE
+#define GL_ACTIVE_TEXTURE 0x84E0
+#endif
+#ifndef GL_ACTIVE_UNIFORM_MAX_LENGTH
+#define GL_ACTIVE_UNIFORM_MAX_LENGTH 0x8B87
+#endif
+#ifndef GL_ACTIVE_UNIFORMS
+#define GL_ACTIVE_UNIFORMS 0x8B86
+#endif
+#ifndef GL_ALIASED_LINE_WIDTH_RANGE
+#define GL_ALIASED_LINE_WIDTH_RANGE 0x846E
+#endif
+#ifndef GL_ALIASED_POINT_SIZE_RANGE
+#define GL_ALIASED_POINT_SIZE_RANGE 0x846D
+#endif
+#ifndef GL_ALPHA
+#define GL_ALPHA 0x1906
+#endif
+#ifndef GL_ALPHA_BITS
+#define GL_ALPHA_BITS 0x0D55
+#endif
+#ifndef GL_ALWAYS
+#define GL_ALWAYS 0x0207
+#endif
+#ifndef GL_ARRAY_BUFFER
+#define GL_ARRAY_BUFFER 0x8892
+#endif
+#ifndef GL_ARRAY_BUFFER_BINDING
+#define GL_ARRAY_BUFFER_BINDING 0x8894
+#endif
+#ifndef GL_ATTACHED_SHADERS
+#define GL_ATTACHED_SHADERS 0x8B85
+#endif
+#ifndef GL_BACK
+#define GL_BACK 0x0405
+#endif
+#ifndef GL_BLEND
+#define GL_BLEND 0x0BE2
+#endif
+#ifndef GL_BLEND_COLOR
+#define GL_BLEND_COLOR 0x8005
+#endif
+#ifndef GL_BLEND_DST_ALPHA
+#define GL_BLEND_DST_ALPHA 0x80CA
+#endif
+#ifndef GL_BLEND_DST_RGB
+#define GL_BLEND_DST_RGB 0x80C8
+#endif
+#ifndef GL_BLEND_EQUATION
+#define GL_BLEND_EQUATION 0x8009
+#endif
+#ifndef GL_BLEND_EQUATION_ALPHA
+#define GL_BLEND_EQUATION_ALPHA 0x883D
+#endif
+#ifndef GL_BLEND_EQUATION_RGB
+#define GL_BLEND_EQUATION_RGB 0x8009
+#endif
+#ifndef GL_BLEND_SRC_ALPHA
+#define GL_BLEND_SRC_ALPHA 0x80CB
+#endif
+#ifndef GL_BLEND_SRC_RGB
+#define GL_BLEND_SRC_RGB 0x80C9
+#endif
+#ifndef GL_BLUE_BITS
+#define GL_BLUE_BITS 0x0D54
+#endif
+#ifndef GL_BOOL
+#define GL_BOOL 0x8B56
+#endif
+#ifndef GL_BOOL_VEC2
+#define GL_BOOL_VEC2 0x8B57
+#endif
+#ifndef GL_BOOL_VEC3
+#define GL_BOOL_VEC3 0x8B58
+#endif
+#ifndef GL_BOOL_VEC4
+#define GL_BOOL_VEC4 0x8B59
+#endif
+#ifndef GL_BUFFER_SIZE
+#define GL_BUFFER_SIZE 0x8764
+#endif
+#ifndef GL_BUFFER_USAGE
+#define GL_BUFFER_USAGE 0x8765
+#endif
+#ifndef GL_BYTE
+#define GL_BYTE 0x1400
+#endif
+#ifndef GL_CCW
+#define GL_CCW 0x0901
+#endif
+#ifndef GL_CLAMP_TO_EDGE
+#define GL_CLAMP_TO_EDGE 0x812F
+#endif
+#ifndef GL_COLOR_ATTACHMENT0
+#define GL_COLOR_ATTACHMENT0 0x8CE0
+#endif
+#ifndef GL_COLOR_BUFFER_BIT
+#define GL_COLOR_BUFFER_BIT 0x00004000
+#endif
+#ifndef GL_COLOR_CLEAR_VALUE
+#define GL_COLOR_CLEAR_VALUE 0x0C22
+#endif
+#ifndef GL_COLOR_WRITEMASK
+#define GL_COLOR_WRITEMASK 0x0C23
+#endif
+#ifndef GL_COMPILE_STATUS
+#define GL_COMPILE_STATUS 0x8B81
+#endif
+#ifndef GL_COMPRESSED_TEXTURE_FORMATS
+#define GL_COMPRESSED_TEXTURE_FORMATS 0x86A3
+#endif
+#ifndef GL_CONSTANT_ALPHA
+#define GL_CONSTANT_ALPHA 0x8003
+#endif
+#ifndef GL_CONSTANT_COLOR
+#define GL_CONSTANT_COLOR 0x8001
+#endif
+#ifndef GL_CULL_FACE
+#define GL_CULL_FACE 0x0B44
+#endif
+#ifndef GL_CULL_FACE_MODE
+#define GL_CULL_FACE_MODE 0x0B45
+#endif
+#ifndef GL_CURRENT_PROGRAM
+#define GL_CURRENT_PROGRAM 0x8B8D
+#endif
+#ifndef GL_CURRENT_VERTEX_ATTRIB
+#define GL_CURRENT_VERTEX_ATTRIB 0x8626
+#endif
+#ifndef GL_CW
+#define GL_CW 0x0900
+#endif
+#ifndef GL_DECR
+#define GL_DECR 0x1E03
+#endif
+#ifndef GL_DECR_WRAP
+#define GL_DECR_WRAP 0x8508
+#endif
+#ifndef GL_DELETE_STATUS
+#define GL_DELETE_STATUS 0x8B80
+#endif
+#ifndef GL_DEPTH_ATTACHMENT
+#define GL_DEPTH_ATTACHMENT 0x8D00
+#endif
+#ifndef GL_DEPTH_BITS
+#define GL_DEPTH_BITS 0x0D56
+#endif
+#ifndef GL_DEPTH_BUFFER_BIT
+#define GL_DEPTH_BUFFER_BIT 0x00000100
+#endif
+#ifndef GL_DEPTH_CLEAR_VALUE
+#define GL_DEPTH_CLEAR_VALUE 0x0B73
+#endif
+#ifndef GL_DEPTH_COMPONENT
+#define GL_DEPTH_COMPONENT 0x1902
+#endif
+#ifndef GL_DEPTH_COMPONENT16
+#define GL_DEPTH_COMPONENT16 0x81A5
+#endif
+#ifndef GL_DEPTH_FUNC
+#define GL_DEPTH_FUNC 0x0B74
+#endif
+#ifndef GL_DEPTH_RANGE
+#define GL_DEPTH_RANGE 0x0B70
+#endif
+#ifndef GL_DEPTH_TEST
+#define GL_DEPTH_TEST 0x0B71
+#endif
+#ifndef GL_DEPTH_WRITEMASK
+#define GL_DEPTH_WRITEMASK 0x0B72
+#endif
+#ifndef GL_DITHER
+#define GL_DITHER 0x0BD0
+#endif
+#ifndef GL_DONT_CARE
+#define GL_DONT_CARE 0x1100
+#endif
+#ifndef GL_DST_ALPHA
+#define GL_DST_ALPHA 0x0304
+#endif
+#ifndef GL_DST_COLOR
+#define GL_DST_COLOR 0x0306
+#endif
+#ifndef GL_DYNAMIC_DRAW
+#define GL_DYNAMIC_DRAW 0x88E8
+#endif
+#ifndef GL_ELEMENT_ARRAY_BUFFER
+#define GL_ELEMENT_ARRAY_BUFFER 0x8893
+#endif
+#ifndef GL_ELEMENT_ARRAY_BUFFER_BINDING
+#define GL_ELEMENT_ARRAY_BUFFER_BINDING 0x8895
+#endif
+#ifndef GL_EQUAL
+#define GL_EQUAL 0x0202
+#endif
+#ifndef GL_EXTENSIONS
+#define GL_EXTENSIONS 0x1F03
+#endif
+#ifndef GL_FALSE
+#define GL_FALSE 0
+#endif
+#ifndef GL_FASTEST
+#define GL_FASTEST 0x1101
+#endif
+#ifndef GL_FIXED
+#define GL_FIXED 0x140C
+#endif
+#ifndef GL_FLOAT
+#define GL_FLOAT 0x1406
+#endif
+#ifndef GL_FLOAT_MAT2
+#define GL_FLOAT_MAT2 0x8B5A
+#endif
+#ifndef GL_FLOAT_MAT3
+#define GL_FLOAT_MAT3 0x8B5B
+#endif
+#ifndef GL_FLOAT_MAT4
+#define GL_FLOAT_MAT4 0x8B5C
+#endif
+#ifndef GL_FLOAT_VEC2
+#define GL_FLOAT_VEC2 0x8B50
+#endif
+#ifndef GL_FLOAT_VEC3
+#define GL_FLOAT_VEC3 0x8B51
+#endif
+#ifndef GL_FLOAT_VEC4
+#define GL_FLOAT_VEC4 0x8B52
+#endif
+#ifndef GL_FRAGMENT_SHADER
+#define GL_FRAGMENT_SHADER 0x8B30
+#endif
+#ifndef GL_FRAMEBUFFER
+#define GL_FRAMEBUFFER 0x8D40
+#endif
+#ifndef GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME
+#define GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME 0x8CD1
+#endif
+#ifndef GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE
+#define GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE 0x8CD0
+#endif
+#ifndef GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE
+#define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE 0x8CD3
+#endif
+#ifndef GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL
+#define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL 0x8CD2
+#endif
+#ifndef GL_FRAMEBUFFER_BINDING
+#define GL_FRAMEBUFFER_BINDING 0x8CA6
+#endif
+#ifndef GL_FRAMEBUFFER_COMPLETE
+#define GL_FRAMEBUFFER_COMPLETE 0x8CD5
+#endif
+#ifndef GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT
+#define GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT 0x8CD6
+#endif
+#ifndef GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS
+#define GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS 0x8CD9
+#endif
+#ifndef GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT
+#define GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT 0x8CD7
+#endif
+#ifndef GL_FRAMEBUFFER_UNSUPPORTED
+#define GL_FRAMEBUFFER_UNSUPPORTED 0x8CDD
+#endif
+#ifndef GL_FRONT
+#define GL_FRONT 0x0404
+#endif
+#ifndef GL_FRONT_AND_BACK
+#define GL_FRONT_AND_BACK 0x0408
+#endif
+#ifndef GL_FRONT_FACE
+#define GL_FRONT_FACE 0x0B46
+#endif
+#ifndef GL_FUNC_ADD
+#define GL_FUNC_ADD 0x8006
+#endif
+#ifndef GL_FUNC_REVERSE_SUBTRACT
+#define GL_FUNC_REVERSE_SUBTRACT 0x800B
+#endif
+#ifndef GL_FUNC_SUBTRACT
+#define GL_FUNC_SUBTRACT 0x800A
+#endif
+#ifndef GL_GENERATE_MIPMAP_HINT
+#define GL_GENERATE_MIPMAP_HINT 0x8192
+#endif
+#ifndef GL_GEQUAL
+#define GL_GEQUAL 0x0206
+#endif
+#ifndef GL_GREATER
+#define GL_GREATER 0x0204
+#endif
+#ifndef GL_GREEN_BITS
+#define GL_GREEN_BITS 0x0D53
+#endif
+#ifndef GL_HIGH_FLOAT
+#define GL_HIGH_FLOAT 0x8DF2
+#endif
+#ifndef GL_HIGH_INT
+#define GL_HIGH_INT 0x8DF5
+#endif
+#ifndef GL_IMPLEMENTATION_COLOR_READ_FORMAT
+#define GL_IMPLEMENTATION_COLOR_READ_FORMAT 0x8B9B
+#endif
+#ifndef GL_IMPLEMENTATION_COLOR_READ_TYPE
+#define GL_IMPLEMENTATION_COLOR_READ_TYPE 0x8B9A
+#endif
+#ifndef GL_INCR
+#define GL_INCR 0x1E02
+#endif
+#ifndef GL_INCR_WRAP
+#define GL_INCR_WRAP 0x8507
+#endif
+#ifndef GL_INFO_LOG_LENGTH
+#define GL_INFO_LOG_LENGTH 0x8B84
+#endif
+#ifndef GL_INT
+#define GL_INT 0x1404
+#endif
+#ifndef GL_INT_VEC2
+#define GL_INT_VEC2 0x8B53
+#endif
+#ifndef GL_INT_VEC3
+#define GL_INT_VEC3 0x8B54
+#endif
+#ifndef GL_INT_VEC4
+#define GL_INT_VEC4 0x8B55
+#endif
+#ifndef GL_INVALID_ENUM
+#define GL_INVALID_ENUM 0x0500
+#endif
+#ifndef GL_INVALID_FRAMEBUFFER_OPERATION
+#define GL_INVALID_FRAMEBUFFER_OPERATION 0x0506
+#endif
+#ifndef GL_INVALID_OPERATION
+#define GL_INVALID_OPERATION 0x0502
+#endif
+#ifndef GL_INVALID_VALUE
+#define GL_INVALID_VALUE 0x0501
+#endif
+#ifndef GL_INVERT
+#define GL_INVERT 0x150A
+#endif
+#ifndef GL_KEEP
+#define GL_KEEP 0x1E00
+#endif
+#ifndef GL_LEQUAL
+#define GL_LEQUAL 0x0203
+#endif
+#ifndef GL_LESS
+#define GL_LESS 0x0201
+#endif
+#ifndef GL_LINEAR
+#define GL_LINEAR 0x2601
+#endif
+#ifndef GL_LINEAR_MIPMAP_LINEAR
+#define GL_LINEAR_MIPMAP_LINEAR 0x2703
+#endif
+#ifndef GL_LINEAR_MIPMAP_NEAREST
+#define GL_LINEAR_MIPMAP_NEAREST 0x2701
+#endif
+#ifndef GL_LINE_LOOP
+#define GL_LINE_LOOP 0x0002
+#endif
+#ifndef GL_LINES
+#define GL_LINES 0x0001
+#endif
+#ifndef GL_LINE_STRIP
+#define GL_LINE_STRIP 0x0003
+#endif
+#ifndef GL_LINE_WIDTH
+#define GL_LINE_WIDTH 0x0B21
+#endif
+#ifndef GL_LINK_STATUS
+#define GL_LINK_STATUS 0x8B82
+#endif
+#ifndef GL_LOW_FLOAT
+#define GL_LOW_FLOAT 0x8DF0
+#endif
+#ifndef GL_LOW_INT
+#define GL_LOW_INT 0x8DF3
+#endif
+#ifndef GL_LUMINANCE
+#define GL_LUMINANCE 0x1909
+#endif
+#ifndef GL_LUMINANCE_ALPHA
+#define GL_LUMINANCE_ALPHA 0x190A
+#endif
+#ifndef GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS
+#define GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS 0x8B4D
+#endif
+#ifndef GL_MAX_CUBE_MAP_TEXTURE_SIZE
+#define GL_MAX_CUBE_MAP_TEXTURE_SIZE 0x851C
+#endif
+#ifndef GL_MAX_FRAGMENT_UNIFORM_VECTORS
+#define GL_MAX_FRAGMENT_UNIFORM_VECTORS 0x8DFD
+#endif
+#ifndef GL_MAX_RENDERBUFFER_SIZE
+#define GL_MAX_RENDERBUFFER_SIZE 0x84E8
+#endif
+#ifndef GL_MAX_TEXTURE_IMAGE_UNITS
+#define GL_MAX_TEXTURE_IMAGE_UNITS 0x8872
+#endif
+#ifndef GL_MAX_TEXTURE_SIZE
+#define GL_MAX_TEXTURE_SIZE 0x0D33
+#endif
+#ifndef GL_MAX_VARYING_VECTORS
+#define GL_MAX_VARYING_VECTORS 0x8DFC
+#endif
+#ifndef GL_MAX_VERTEX_ATTRIBS
+#define GL_MAX_VERTEX_ATTRIBS 0x8869
+#endif
+#ifndef GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS
+#define GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS 0x8B4C
+#endif
+#ifndef GL_MAX_VERTEX_UNIFORM_VECTORS
+#define GL_MAX_VERTEX_UNIFORM_VECTORS 0x8DFB
+#endif
+#ifndef GL_MAX_VIEWPORT_DIMS
+#define GL_MAX_VIEWPORT_DIMS 0x0D3A
+#endif
+#ifndef GL_MEDIUM_FLOAT
+#define GL_MEDIUM_FLOAT 0x8DF1
+#endif
+#ifndef GL_MEDIUM_INT
+#define GL_MEDIUM_INT 0x8DF4
+#endif
+#ifndef GL_MIRRORED_REPEAT
+#define GL_MIRRORED_REPEAT 0x8370
+#endif
+#ifndef GL_NEAREST
+#define GL_NEAREST 0x2600
+#endif
+#ifndef GL_NEAREST_MIPMAP_LINEAR
+#define GL_NEAREST_MIPMAP_LINEAR 0x2702
+#endif
+#ifndef GL_NEAREST_MIPMAP_NEAREST
+#define GL_NEAREST_MIPMAP_NEAREST 0x2700
+#endif
+#ifndef GL_NEVER
+#define GL_NEVER 0x0200
+#endif
+#ifndef GL_NICEST
+#define GL_NICEST 0x1102
+#endif
+#ifndef GL_NO_ERROR
+#define GL_NO_ERROR 0
+#endif
+#ifndef GL_NONE
+#define GL_NONE 0
+#endif
+#ifndef GL_NOTEQUAL
+#define GL_NOTEQUAL 0x0205
+#endif
+#ifndef GL_NUM_COMPRESSED_TEXTURE_FORMATS
+#define GL_NUM_COMPRESSED_TEXTURE_FORMATS 0x86A2
+#endif
+#ifndef GL_NUM_SHADER_BINARY_FORMATS
+#define GL_NUM_SHADER_BINARY_FORMATS 0x8DF9
+#endif
+#ifndef GL_ONE
+#define GL_ONE 1
+#endif
+#ifndef GL_ONE_MINUS_CONSTANT_ALPHA
+#define GL_ONE_MINUS_CONSTANT_ALPHA 0x8004
+#endif
+#ifndef GL_ONE_MINUS_CONSTANT_COLOR
+#define GL_ONE_MINUS_CONSTANT_COLOR 0x8002
+#endif
+#ifndef GL_ONE_MINUS_DST_ALPHA
+#define GL_ONE_MINUS_DST_ALPHA 0x0305
+#endif
+#ifndef GL_ONE_MINUS_DST_COLOR
+#define GL_ONE_MINUS_DST_COLOR 0x0307
+#endif
+#ifndef GL_ONE_MINUS_SRC_ALPHA
+#define GL_ONE_MINUS_SRC_ALPHA 0x0303
+#endif
+#ifndef GL_ONE_MINUS_SRC_COLOR
+#define GL_ONE_MINUS_SRC_COLOR 0x0301
+#endif
+#ifndef GL_OUT_OF_MEMORY
+#define GL_OUT_OF_MEMORY 0x0505
+#endif
+#ifndef GL_PACK_ALIGNMENT
+#define GL_PACK_ALIGNMENT 0x0D05
+#endif
+#ifndef GL_POINTS
+#define GL_POINTS 0x0000
+#endif
+#ifndef GL_POLYGON_OFFSET_FACTOR
+#define GL_POLYGON_OFFSET_FACTOR 0x8038
+#endif
+#ifndef GL_POLYGON_OFFSET_FILL
+#define GL_POLYGON_OFFSET_FILL 0x8037
+#endif
+#ifndef GL_POLYGON_OFFSET_UNITS
+#define GL_POLYGON_OFFSET_UNITS 0x2A00
+#endif
+#ifndef GL_RED_BITS
+#define GL_RED_BITS 0x0D52
+#endif
+#ifndef GL_RENDERBUFFER
+#define GL_RENDERBUFFER 0x8D41
+#endif
+#ifndef GL_RENDERBUFFER_ALPHA_SIZE
+#define GL_RENDERBUFFER_ALPHA_SIZE 0x8D53
+#endif
+#ifndef GL_RENDERBUFFER_BINDING
+#define GL_RENDERBUFFER_BINDING 0x8CA7
+#endif
+#ifndef GL_RENDERBUFFER_BLUE_SIZE
+#define GL_RENDERBUFFER_BLUE_SIZE 0x8D52
+#endif
+#ifndef GL_RENDERBUFFER_DEPTH_SIZE
+#define GL_RENDERBUFFER_DEPTH_SIZE 0x8D54
+#endif
+#ifndef GL_RENDERBUFFER_GREEN_SIZE
+#define GL_RENDERBUFFER_GREEN_SIZE 0x8D51
+#endif
+#ifndef GL_RENDERBUFFER_HEIGHT
+#define GL_RENDERBUFFER_HEIGHT 0x8D43
+#endif
+#ifndef GL_RENDERBUFFER_INTERNAL_FORMAT
+#define GL_RENDERBUFFER_INTERNAL_FORMAT 0x8D44
+#endif
+#ifndef GL_RENDERBUFFER_RED_SIZE
+#define GL_RENDERBUFFER_RED_SIZE 0x8D50
+#endif
+#ifndef GL_RENDERBUFFER_STENCIL_SIZE
+#define GL_RENDERBUFFER_STENCIL_SIZE 0x8D55
+#endif
+#ifndef GL_RENDERBUFFER_WIDTH
+#define GL_RENDERBUFFER_WIDTH 0x8D42
+#endif
+#ifndef GL_RENDERER
+#define GL_RENDERER 0x1F01
+#endif
+#ifndef GL_REPEAT
+#define GL_REPEAT 0x2901
+#endif
+#ifndef GL_REPLACE
+#define GL_REPLACE 0x1E01
+#endif
+#ifndef GL_RGB
+#define GL_RGB 0x1907
+#endif
+#ifndef GL_RGB565
+#define GL_RGB565 0x8D62
+#endif
+#ifndef GL_RGB5_A1
+#define GL_RGB5_A1 0x8057
+#endif
+#ifndef GL_RGBA
+#define GL_RGBA 0x1908
+#endif
+#ifndef GL_RGBA4
+#define GL_RGBA4 0x8056
+#endif
+#ifndef GL_SAMPLE_ALPHA_TO_COVERAGE
+#define GL_SAMPLE_ALPHA_TO_COVERAGE 0x809E
+#endif
+#ifndef GL_SAMPLE_BUFFERS
+#define GL_SAMPLE_BUFFERS 0x80A8
+#endif
+#ifndef GL_SAMPLE_COVERAGE
+#define GL_SAMPLE_COVERAGE 0x80A0
+#endif
+#ifndef GL_SAMPLE_COVERAGE_INVERT
+#define GL_SAMPLE_COVERAGE_INVERT 0x80AB
+#endif
+#ifndef GL_SAMPLE_COVERAGE_VALUE
+#define GL_SAMPLE_COVERAGE_VALUE 0x80AA
+#endif
+#ifndef GL_SAMPLER_2D
+#define GL_SAMPLER_2D 0x8B5E
+#endif
+#ifndef GL_SAMPLER_CUBE
+#define GL_SAMPLER_CUBE 0x8B60
+#endif
+#ifndef GL_SAMPLES
+#define GL_SAMPLES 0x80A9
+#endif
+#ifndef GL_SCISSOR_BOX
+#define GL_SCISSOR_BOX 0x0C10
+#endif
+#ifndef GL_SCISSOR_TEST
+#define GL_SCISSOR_TEST 0x0C11
+#endif
+#ifndef GL_SHADER_BINARY_FORMATS
+#define GL_SHADER_BINARY_FORMATS 0x8DF8
+#endif
+#ifndef GL_SHADER_COMPILER
+#define GL_SHADER_COMPILER 0x8DFA
+#endif
+#ifndef GL_SHADER_SOURCE_LENGTH
+#define GL_SHADER_SOURCE_LENGTH 0x8B88
+#endif
+#ifndef GL_SHADER_TYPE
+#define GL_SHADER_TYPE 0x8B4F
+#endif
+#ifndef GL_SHADING_LANGUAGE_VERSION
+#define GL_SHADING_LANGUAGE_VERSION 0x8B8C
+#endif
+#ifndef GL_SHORT
+#define GL_SHORT 0x1402
+#endif
+#ifndef GL_SRC_ALPHA
+#define GL_SRC_ALPHA 0x0302
+#endif
+#ifndef GL_SRC_ALPHA_SATURATE
+#define GL_SRC_ALPHA_SATURATE 0x0308
+#endif
+#ifndef GL_SRC_COLOR
+#define GL_SRC_COLOR 0x0300
+#endif
+#ifndef GL_STATIC_DRAW
+#define GL_STATIC_DRAW 0x88E4
+#endif
+#ifndef GL_STENCIL_ATTACHMENT
+#define GL_STENCIL_ATTACHMENT 0x8D20
+#endif
+#ifndef GL_STENCIL_BACK_FAIL
+#define GL_STENCIL_BACK_FAIL 0x8801
+#endif
+#ifndef GL_STENCIL_BACK_FUNC
+#define GL_STENCIL_BACK_FUNC 0x8800
+#endif
+#ifndef GL_STENCIL_BACK_PASS_DEPTH_FAIL
+#define GL_STENCIL_BACK_PASS_DEPTH_FAIL 0x8802
+#endif
+#ifndef GL_STENCIL_BACK_PASS_DEPTH_PASS
+#define GL_STENCIL_BACK_PASS_DEPTH_PASS 0x8803
+#endif
+#ifndef GL_STENCIL_BACK_REF
+#define GL_STENCIL_BACK_REF 0x8CA3
+#endif
+#ifndef GL_STENCIL_BACK_VALUE_MASK
+#define GL_STENCIL_BACK_VALUE_MASK 0x8CA4
+#endif
+#ifndef GL_STENCIL_BACK_WRITEMASK
+#define GL_STENCIL_BACK_WRITEMASK 0x8CA5
+#endif
+#ifndef GL_STENCIL_BITS
+#define GL_STENCIL_BITS 0x0D57
+#endif
+#ifndef GL_STENCIL_BUFFER_BIT
+#define GL_STENCIL_BUFFER_BIT 0x00000400
+#endif
+#ifndef GL_STENCIL_CLEAR_VALUE
+#define GL_STENCIL_CLEAR_VALUE 0x0B91
+#endif
+#ifndef GL_STENCIL_FAIL
+#define GL_STENCIL_FAIL 0x0B94
+#endif
+#ifndef GL_STENCIL_FUNC
+#define GL_STENCIL_FUNC 0x0B92
+#endif
+#ifndef GL_STENCIL_INDEX
+#define GL_STENCIL_INDEX 0x1901
+#endif
+#ifndef GL_STENCIL_INDEX8
+#define GL_STENCIL_INDEX8 0x8D48
+#endif
+#ifndef GL_STENCIL_PASS_DEPTH_FAIL
+#define GL_STENCIL_PASS_DEPTH_FAIL 0x0B95
+#endif
+#ifndef GL_STENCIL_PASS_DEPTH_PASS
+#define GL_STENCIL_PASS_DEPTH_PASS 0x0B96
+#endif
+#ifndef GL_STENCIL_REF
+#define GL_STENCIL_REF 0x0B97
+#endif
+#ifndef GL_STENCIL_TEST
+#define GL_STENCIL_TEST 0x0B90
+#endif
+#ifndef GL_STENCIL_VALUE_MASK
+#define GL_STENCIL_VALUE_MASK 0x0B93
+#endif
+#ifndef GL_STENCIL_WRITEMASK
+#define GL_STENCIL_WRITEMASK 0x0B98
+#endif
+#ifndef GL_STREAM_DRAW
+#define GL_STREAM_DRAW 0x88E0
+#endif
+#ifndef GL_SUBPIXEL_BITS
+#define GL_SUBPIXEL_BITS 0x0D50
+#endif
+#ifndef GL_TEXTURE0
+#define GL_TEXTURE0 0x84C0
+#endif
+#ifndef GL_TEXTURE
+#define GL_TEXTURE 0x1702
+#endif
+#ifndef GL_TEXTURE10
+#define GL_TEXTURE10 0x84CA
+#endif
+#ifndef GL_TEXTURE1
+#define GL_TEXTURE1 0x84C1
+#endif
+#ifndef GL_TEXTURE11
+#define GL_TEXTURE11 0x84CB
+#endif
+#ifndef GL_TEXTURE12
+#define GL_TEXTURE12 0x84CC
+#endif
+#ifndef GL_TEXTURE13
+#define GL_TEXTURE13 0x84CD
+#endif
+#ifndef GL_TEXTURE14
+#define GL_TEXTURE14 0x84CE
+#endif
+#ifndef GL_TEXTURE15
+#define GL_TEXTURE15 0x84CF
+#endif
+#ifndef GL_TEXTURE16
+#define GL_TEXTURE16 0x84D0
+#endif
+#ifndef GL_TEXTURE17
+#define GL_TEXTURE17 0x84D1
+#endif
+#ifndef GL_TEXTURE18
+#define GL_TEXTURE18 0x84D2
+#endif
+#ifndef GL_TEXTURE19
+#define GL_TEXTURE19 0x84D3
+#endif
+#ifndef GL_TEXTURE20
+#define GL_TEXTURE20 0x84D4
+#endif
+#ifndef GL_TEXTURE2
+#define GL_TEXTURE2 0x84C2
+#endif
+#ifndef GL_TEXTURE21
+#define GL_TEXTURE21 0x84D5
+#endif
+#ifndef GL_TEXTURE22
+#define GL_TEXTURE22 0x84D6
+#endif
+#ifndef GL_TEXTURE23
+#define GL_TEXTURE23 0x84D7
+#endif
+#ifndef GL_TEXTURE24
+#define GL_TEXTURE24 0x84D8
+#endif
+#ifndef GL_TEXTURE25
+#define GL_TEXTURE25 0x84D9
+#endif
+#ifndef GL_TEXTURE26
+#define GL_TEXTURE26 0x84DA
+#endif
+#ifndef GL_TEXTURE27
+#define GL_TEXTURE27 0x84DB
+#endif
+#ifndef GL_TEXTURE28
+#define GL_TEXTURE28 0x84DC
+#endif
+#ifndef GL_TEXTURE29
+#define GL_TEXTURE29 0x84DD
+#endif
+#ifndef GL_TEXTURE_2D
+#define GL_TEXTURE_2D 0x0DE1
+#endif
+#ifndef GL_TEXTURE30
+#define GL_TEXTURE30 0x84DE
+#endif
+#ifndef GL_TEXTURE3
+#define GL_TEXTURE3 0x84C3
+#endif
+#ifndef GL_TEXTURE31
+#define GL_TEXTURE31 0x84DF
+#endif
+#ifndef GL_TEXTURE4
+#define GL_TEXTURE4 0x84C4
+#endif
+#ifndef GL_TEXTURE5
+#define GL_TEXTURE5 0x84C5
+#endif
+#ifndef GL_TEXTURE6
+#define GL_TEXTURE6 0x84C6
+#endif
+#ifndef GL_TEXTURE7
+#define GL_TEXTURE7 0x84C7
+#endif
+#ifndef GL_TEXTURE8
+#define GL_TEXTURE8 0x84C8
+#endif
+#ifndef GL_TEXTURE9
+#define GL_TEXTURE9 0x84C9
+#endif
+#ifndef GL_TEXTURE_BINDING_2D
+#define GL_TEXTURE_BINDING_2D 0x8069
+#endif
+#ifndef GL_TEXTURE_BINDING_CUBE_MAP
+#define GL_TEXTURE_BINDING_CUBE_MAP 0x8514
+#endif
+#ifndef GL_TEXTURE_CUBE_MAP
+#define GL_TEXTURE_CUBE_MAP 0x8513
+#endif
+#ifndef GL_TEXTURE_CUBE_MAP_NEGATIVE_X
+#define GL_TEXTURE_CUBE_MAP_NEGATIVE_X 0x8516
+#endif
+#ifndef GL_TEXTURE_CUBE_MAP_NEGATIVE_Y
+#define GL_TEXTURE_CUBE_MAP_NEGATIVE_Y 0x8518
+#endif
+#ifndef GL_TEXTURE_CUBE_MAP_NEGATIVE_Z
+#define GL_TEXTURE_CUBE_MAP_NEGATIVE_Z 0x851A
+#endif
+#ifndef GL_TEXTURE_CUBE_MAP_POSITIVE_X
+#define GL_TEXTURE_CUBE_MAP_POSITIVE_X 0x8515
+#endif
+#ifndef GL_TEXTURE_CUBE_MAP_POSITIVE_Y
+#define GL_TEXTURE_CUBE_MAP_POSITIVE_Y 0x8517
+#endif
+#ifndef GL_TEXTURE_CUBE_MAP_POSITIVE_Z
+#define GL_TEXTURE_CUBE_MAP_POSITIVE_Z 0x8519
+#endif
+#ifndef GL_TEXTURE_MAG_FILTER
+#define GL_TEXTURE_MAG_FILTER 0x2800
+#endif
+#ifndef GL_TEXTURE_MIN_FILTER
+#define GL_TEXTURE_MIN_FILTER 0x2801
+#endif
+#ifndef GL_TEXTURE_WRAP_S
+#define GL_TEXTURE_WRAP_S 0x2802
+#endif
+#ifndef GL_TEXTURE_WRAP_T
+#define GL_TEXTURE_WRAP_T 0x2803
+#endif
+#ifndef GL_TRIANGLE_FAN
+#define GL_TRIANGLE_FAN 0x0006
+#endif
+#ifndef GL_TRIANGLES
+#define GL_TRIANGLES 0x0004
+#endif
+#ifndef GL_TRIANGLE_STRIP
+#define GL_TRIANGLE_STRIP 0x0005
+#endif
+#ifndef GL_TRUE
+#define GL_TRUE 1
+#endif
+#ifndef GL_UNPACK_ALIGNMENT
+#define GL_UNPACK_ALIGNMENT 0x0CF5
+#endif
+#ifndef GL_UNSIGNED_BYTE
+#define GL_UNSIGNED_BYTE 0x1401
+#endif
+#ifndef GL_UNSIGNED_INT
+#define GL_UNSIGNED_INT 0x1405
+#endif
+#ifndef GL_UNSIGNED_SHORT
+#define GL_UNSIGNED_SHORT 0x1403
+#endif
+#ifndef GL_UNSIGNED_SHORT_4_4_4_4
+#define GL_UNSIGNED_SHORT_4_4_4_4 0x8033
+#endif
+#ifndef GL_UNSIGNED_SHORT_5_5_5_1
+#define GL_UNSIGNED_SHORT_5_5_5_1 0x8034
+#endif
+#ifndef GL_UNSIGNED_SHORT_5_6_5
+#define GL_UNSIGNED_SHORT_5_6_5 0x8363
+#endif
+#ifndef GL_VALIDATE_STATUS
+#define GL_VALIDATE_STATUS 0x8B83
+#endif
+#ifndef GL_VENDOR
+#define GL_VENDOR 0x1F00
+#endif
+#ifndef GL_VERSION
+#define GL_VERSION 0x1F02
+#endif
+#ifndef GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING
+#define GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING 0x889F
+#endif
+#ifndef GL_VERTEX_ATTRIB_ARRAY_ENABLED
+#define GL_VERTEX_ATTRIB_ARRAY_ENABLED 0x8622
+#endif
+#ifndef GL_VERTEX_ATTRIB_ARRAY_NORMALIZED
+#define GL_VERTEX_ATTRIB_ARRAY_NORMALIZED 0x886A
+#endif
+#ifndef GL_VERTEX_ATTRIB_ARRAY_POINTER
+#define GL_VERTEX_ATTRIB_ARRAY_POINTER 0x8645
+#endif
+#ifndef GL_VERTEX_ATTRIB_ARRAY_SIZE
+#define GL_VERTEX_ATTRIB_ARRAY_SIZE 0x8623
+#endif
+#ifndef GL_VERTEX_ATTRIB_ARRAY_STRIDE
+#define GL_VERTEX_ATTRIB_ARRAY_STRIDE 0x8624
+#endif
+#ifndef GL_VERTEX_ATTRIB_ARRAY_TYPE
+#define GL_VERTEX_ATTRIB_ARRAY_TYPE 0x8625
+#endif
+#ifndef GL_VERTEX_SHADER
+#define GL_VERTEX_SHADER 0x8B31
+#endif
+#ifndef GL_VIEWPORT
+#define GL_VIEWPORT 0x0BA2
+#endif
+#ifndef GL_ZERO
+#define GL_ZERO 0
+#endif
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif
diff --git a/src/opengl/qglpaintdevice.cpp b/src/opengl/qglpaintdevice.cpp
new file mode 100644
index 0000000000..61d8f26fda
--- /dev/null
+++ b/src/opengl/qglpaintdevice.cpp
@@ -0,0 +1,246 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <private/qglpaintdevice_p.h>
+#include <private/qgl_p.h>
+#include <private/qglpixelbuffer_p.h>
+#include <private/qglframebufferobject_p.h>
+#ifdef Q_WS_X11
+#include <private/qpixmapdata_x11gl_p.h>
+#endif
+
+#if !defined(QT_OPENGL_ES_1)
+#include <private/qpixmapdata_gl_p.h>
+#include <private/qwindowsurface_gl_p.h>
+#endif
+
+QT_BEGIN_NAMESPACE
+
+QGLPaintDevice::QGLPaintDevice()
+    : m_thisFBO(0)
+{
+}
+
+QGLPaintDevice::~QGLPaintDevice()
+{
+}
+
+int QGLPaintDevice::metric(QPaintDevice::PaintDeviceMetric metric) const
+{
+    switch(metric) {
+    case PdmWidth:
+        return size().width();
+    case PdmHeight:
+        return size().height();
+    case PdmDepth: {
+        const QGLFormat f = format();
+        return f.redBufferSize() + f.greenBufferSize() + f.blueBufferSize() + f.alphaBufferSize();
+    }
+    default:
+        qWarning("QGLPaintDevice::metric() - metric %d not known", metric);
+        return 0;
+    }
+}
+
+void QGLPaintDevice::beginPaint()
+{
+    // Make sure our context is the current one:
+    QGLContext *ctx = context();
+    if (ctx != QGLContext::currentContext())
+        ctx->makeCurrent();
+
+    // Record the currently bound FBO so we can restore it again
+    // in endPaint() and bind this device's FBO
+    //
+    // Note: m_thisFBO could be zero if the paint device is not
+    // backed by an FBO (e.g. window back buffer).  But there could
+    // be a previous FBO bound to the context which we need to
+    // explicitly unbind.  Otherwise the painting will go into
+    // the previous FBO instead of to the window.
+    m_previousFBO = ctx->d_func()->current_fbo;
+
+    if (m_previousFBO != m_thisFBO) {
+        ctx->d_ptr->current_fbo = m_thisFBO;
+        glBindFramebuffer(GL_FRAMEBUFFER_EXT, m_thisFBO);
+    }
+
+    // Set the default fbo for the context to m_thisFBO so that
+    // if some raw GL code between beginNativePainting() and
+    // endNativePainting() calls QGLFramebufferObject::release(),
+    // painting will revert to the window surface's fbo.
+    ctx->d_ptr->default_fbo = m_thisFBO;
+}
+
+void QGLPaintDevice::ensureActiveTarget()
+{
+    QGLContext* ctx = context();
+    if (ctx != QGLContext::currentContext())
+        ctx->makeCurrent();
+
+    if (ctx->d_ptr->current_fbo != m_thisFBO) {
+        ctx->d_ptr->current_fbo = m_thisFBO;
+        glBindFramebuffer(GL_FRAMEBUFFER_EXT, m_thisFBO);
+    }
+
+    ctx->d_ptr->default_fbo = m_thisFBO;
+}
+
+void QGLPaintDevice::endPaint()
+{
+    // Make sure the FBO bound at beginPaint is re-bound again here:
+    QGLContext *ctx = context();
+    if (m_previousFBO != ctx->d_func()->current_fbo) {
+        ctx->d_ptr->current_fbo = m_previousFBO;
+        glBindFramebuffer(GL_FRAMEBUFFER_EXT, m_previousFBO);
+    }
+
+    ctx->d_ptr->default_fbo = 0;
+}
+
+QGLFormat QGLPaintDevice::format() const
+{
+    return context()->format();
+}
+
+bool QGLPaintDevice::alphaRequested() const
+{
+    return context()->d_func()->reqFormat.alpha();
+}
+
+bool QGLPaintDevice::isFlipped() const
+{
+    return false;
+}
+
+////////////////// QGLWidgetGLPaintDevice //////////////////
+
+QGLWidgetGLPaintDevice::QGLWidgetGLPaintDevice()
+{
+}
+
+QPaintEngine* QGLWidgetGLPaintDevice::paintEngine() const
+{
+    return glWidget->paintEngine();
+}
+
+void QGLWidgetGLPaintDevice::setWidget(QGLWidget* w)
+{
+    glWidget = w;
+}
+
+void QGLWidgetGLPaintDevice::beginPaint()
+{
+    QGLPaintDevice::beginPaint();
+    if (!glWidget->d_func()->disable_clear_on_painter_begin && glWidget->autoFillBackground()) {
+        if (glWidget->testAttribute(Qt::WA_TranslucentBackground))
+            glClearColor(0.0, 0.0, 0.0, 0.0);
+        else {
+            const QColor &c = glWidget->palette().brush(glWidget->backgroundRole()).color();
+            float alpha = c.alphaF();
+            glClearColor(c.redF() * alpha, c.greenF() * alpha, c.blueF() * alpha, alpha);
+        }
+        if (context()->d_func()->workaround_needsFullClearOnEveryFrame)
+            glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
+        else
+            glClear(GL_COLOR_BUFFER_BIT);
+    }
+}
+
+void QGLWidgetGLPaintDevice::endPaint()
+{
+    if (glWidget->autoBufferSwap())
+        glWidget->swapBuffers();
+    QGLPaintDevice::endPaint();
+}
+
+
+QSize QGLWidgetGLPaintDevice::size() const
+{
+    return glWidget->size();
+}
+
+QGLContext* QGLWidgetGLPaintDevice::context() const
+{
+    return const_cast<QGLContext*>(glWidget->context());
+}
+
+// returns the QGLPaintDevice for the given QPaintDevice
+QGLPaintDevice* QGLPaintDevice::getDevice(QPaintDevice* pd)
+{
+    QGLPaintDevice* glpd = 0;
+
+    switch(pd->devType()) {
+        case QInternal::Widget:
+            // Should not be called on a non-gl widget:
+            Q_ASSERT(qobject_cast<QGLWidget*>(static_cast<QWidget*>(pd)));
+            glpd = &(static_cast<QGLWidget*>(pd)->d_func()->glDevice);
+            break;
+        case QInternal::Pbuffer:
+            glpd = &(static_cast<QGLPixelBuffer*>(pd)->d_func()->glDevice);
+            break;
+        case QInternal::FramebufferObject:
+            glpd = &(static_cast<QGLFramebufferObject*>(pd)->d_func()->glDevice);
+            break;
+        case QInternal::Pixmap: {
+#if !defined(QT_OPENGL_ES_1)
+            QPixmapData* pmd = static_cast<QPixmap*>(pd)->pixmapData();
+            if (pmd->classId() == QPixmapData::OpenGLClass)
+                glpd = static_cast<QGLPixmapData*>(pmd)->glDevice();
+#ifdef Q_WS_X11
+            else if (pmd->classId() == QPixmapData::X11Class)
+                glpd = static_cast<QX11GLPixmapData*>(pmd);
+#endif
+            else
+                qWarning("Pixmap type not supported for GL rendering");
+#else
+            qWarning("Pixmap render targets not supported on OpenGL ES 1.x");
+#endif
+            break;
+        }
+        default:
+            qWarning("QGLPaintDevice::getDevice() - Unknown device type %d", pd->devType());
+            break;
+    }
+
+    return glpd;
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/qglpaintdevice_p.h b/src/opengl/qglpaintdevice_p.h
new file mode 100644
index 0000000000..f4176fb2e7
--- /dev/null
+++ b/src/opengl/qglpaintdevice_p.h
@@ -0,0 +1,115 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QGLPAINTDEVICE_P_H
+#define QGLPAINTDEVICE_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of the QtOpenGL module.  This header file may change from
+// version to version without notice, or even be removed.
+//
+// We mean it.
+//
+
+
+#include <qpaintdevice.h>
+#include <qgl.h>
+
+
+QT_BEGIN_NAMESPACE
+
+class Q_OPENGL_EXPORT QGLPaintDevice : public QPaintDevice
+{
+public:
+    QGLPaintDevice();
+    virtual ~QGLPaintDevice();
+
+    int devType() const {return QInternal::OpenGL;}
+
+    virtual void beginPaint();
+    virtual void ensureActiveTarget();
+    virtual void endPaint();
+
+    virtual QGLContext* context() const = 0;
+    virtual QGLFormat format() const;
+    virtual QSize size() const = 0;
+    virtual bool alphaRequested() const;
+    virtual bool isFlipped() const;
+
+    // returns the QGLPaintDevice for the given QPaintDevice
+    static QGLPaintDevice* getDevice(QPaintDevice*);
+
+protected:
+    int metric(QPaintDevice::PaintDeviceMetric metric) const;
+    GLuint m_previousFBO;
+    GLuint m_thisFBO;
+};
+
+
+// Wraps a QGLWidget
+class QGLWidget;
+class QGLWidgetGLPaintDevice : public QGLPaintDevice
+{
+public:
+    QGLWidgetGLPaintDevice();
+
+    virtual QPaintEngine* paintEngine() const;
+
+    // QGLWidgets need to do swapBufers in endPaint:
+    virtual void beginPaint();
+    virtual void endPaint();
+    virtual QSize size() const;
+    virtual QGLContext* context() const;
+
+    void setWidget(QGLWidget*);
+
+private:
+    friend class QGLWidget;
+    QGLWidget *glWidget;
+};
+
+QT_END_NAMESPACE
+
+#endif // QGLPAINTDEVICE_P_H
diff --git a/src/opengl/qglpixelbuffer.cpp b/src/opengl/qglpixelbuffer.cpp
new file mode 100644
index 0000000000..32785960e1
--- /dev/null
+++ b/src/opengl/qglpixelbuffer.cpp
@@ -0,0 +1,628 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*!
+    \class QGLPixelBuffer
+    \brief The QGLPixelBuffer class encapsulates an OpenGL pbuffer.
+    \since 4.1
+
+    \ingroup painting-3D
+
+    Rendering into a pbuffer is normally done using full hardware
+    acceleration. This can be significantly faster than rendering
+    into a QPixmap.
+
+    There are three approaches to using this class:
+
+    \list 1
+    \o \bold{We can draw into the pbuffer and convert it to a QImage
+       using toImage().} This is normally much faster than calling
+       QGLWidget::renderPixmap().
+
+    \o \bold{We can draw into the pbuffer and copy the contents into
+       an OpenGL texture using updateDynamicTexture().} This allows
+       us to create dynamic textures and works on all systems
+       with pbuffer support.
+
+    \o \bold{On systems that support it, we can bind the pbuffer to
+       an OpenGL texture.} The texture is then updated automatically
+       when the pbuffer contents change, eliminating the need for
+       additional copy operations. This is supported only on Windows
+       and Mac OS X systems that provide the \c render_texture
+       extension. Note that under Windows, a multi-sampled pbuffer
+       can't be used in conjunction with the \c render_texture
+       extension. If a multi-sampled pbuffer is requested under
+       Windows, the \c render_texture extension is turned off for that
+       pbuffer.
+
+
+    \endlist
+
+
+    \section Threading
+
+    As of Qt 4.8, it's possible to render into a QGLPixelBuffer using
+    a QPainter in a separate thread. Note that OpenGL 2.0 or OpenGL ES
+    2.0 is required for this to work. Also, under X11, it's necessary
+    to set the Qt::AA_X11InitThreads application attribute.
+
+    Pbuffers are provided by the OpenGL \c pbuffer extension; call
+    hasOpenGLPbuffer() to find out if the system provides pbuffers.
+
+    \sa {opengl/pbuffers}{Pbuffers Example}
+*/
+
+#include <QtCore/qglobal.h>
+
+#if !defined(QT_OPENGL_ES_1)
+#include <private/qpaintengineex_opengl2_p.h>
+#endif
+
+#include <qglpixelbuffer.h>
+#include <private/qglpixelbuffer_p.h>
+#include <private/qfont_p.h>
+#include <qimage.h>
+
+#ifndef QT_OPENGL_ES_2
+#include <private/qpaintengine_opengl_p.h>
+#endif
+
+QT_BEGIN_NAMESPACE
+
+#if !defined(QT_OPENGL_ES_2)
+extern void qgl_cleanup_glyph_cache(QGLContext *);
+#else
+void qgl_cleanup_glyph_cache(QGLContext *) {}
+#endif
+
+extern QImage qt_gl_read_framebuffer(const QSize&, bool, bool);
+
+
+QGLContext* QGLPBufferGLPaintDevice::context() const
+{
+    return pbuf->d_func()->qctx;
+}
+
+void QGLPBufferGLPaintDevice::endPaint() {
+    glFlush();
+    QGLPaintDevice::endPaint();
+}
+
+void QGLPBufferGLPaintDevice::setPBuffer(QGLPixelBuffer* pb)
+{
+    pbuf = pb;
+}
+
+void QGLPixelBufferPrivate::common_init(const QSize &size, const QGLFormat &format, QGLWidget *shareWidget)
+{
+    Q_Q(QGLPixelBuffer);
+    if(init(size, format, shareWidget)) {
+        req_size = size;
+        req_format = format;
+        req_shareWidget = shareWidget;
+        invalid = false;
+        qctx = new QGLContext(format);
+        qctx->d_func()->sharing = (shareWidget != 0);
+        if (shareWidget != 0 && shareWidget->d_func()->glcx) {
+            QGLContextGroup::addShare(qctx, shareWidget->d_func()->glcx);
+            shareWidget->d_func()->glcx->d_func()->sharing = true;
+        }
+
+        glDevice.setPBuffer(q);
+        qctx->d_func()->paintDevice = q;
+        qctx->d_func()->valid = true;
+#if defined(Q_WS_WIN) && !defined(QT_OPENGL_ES)
+        qctx->d_func()->dc = dc;
+        qctx->d_func()->rc = ctx;
+#elif (defined(Q_WS_X11) && defined(QT_NO_EGL))
+        qctx->d_func()->cx = ctx;
+        qctx->d_func()->pbuf = (void *) pbuf;
+        qctx->d_func()->vi = 0;
+#elif defined(Q_WS_MAC)
+        qctx->d_func()->cx = ctx;
+        qctx->d_func()->vi = 0;
+#elif !defined(QT_NO_EGL)
+        qctx->d_func()->eglContext = ctx;
+        qctx->d_func()->eglSurface = pbuf;
+#endif
+    }
+}
+
+/*!
+    Constructs an OpenGL pbuffer of the given \a size. If no \a
+    format is specified, the \l{QGLFormat::defaultFormat()}{default
+    format} is used. If the \a shareWidget parameter points to a
+    valid QGLWidget, the pbuffer will share its context with \a
+    shareWidget.
+
+    If you intend to bind this pbuffer as a dynamic texture, the width
+    and height components of \c size must be powers of two (e.g., 512
+    x 128).
+
+    \sa size(), format()
+*/
+QGLPixelBuffer::QGLPixelBuffer(const QSize &size, const QGLFormat &format, QGLWidget *shareWidget)
+    : d_ptr(new QGLPixelBufferPrivate(this))
+{
+    Q_D(QGLPixelBuffer);
+    d->common_init(size, format, shareWidget);
+}
+
+
+/*! \overload
+
+    Constructs an OpenGL pbuffer with the \a width and \a height. If
+    no \a format is specified, the
+    \l{QGLFormat::defaultFormat()}{default format} is used. If the \a
+    shareWidget parameter points to a valid QGLWidget, the pbuffer
+    will share its context with \a shareWidget.
+
+    If you intend to bind this pbuffer as a dynamic texture, the width
+    and height components of \c size must be powers of two (e.g., 512
+    x 128).
+
+    \sa size(), format()
+*/
+QGLPixelBuffer::QGLPixelBuffer(int width, int height, const QGLFormat &format, QGLWidget *shareWidget)
+    : d_ptr(new QGLPixelBufferPrivate(this))
+{
+    Q_D(QGLPixelBuffer);
+    d->common_init(QSize(width, height), format, shareWidget);
+}
+
+
+/*! \fn QGLPixelBuffer::~QGLPixelBuffer()
+
+    Destroys the pbuffer and frees any allocated resources.
+*/
+QGLPixelBuffer::~QGLPixelBuffer()
+{
+    Q_D(QGLPixelBuffer);
+
+    // defined in qpaintengine_opengl.cpp
+    QGLContext *current = const_cast<QGLContext *>(QGLContext::currentContext());
+    if (current != d->qctx)
+        makeCurrent();
+    qgl_cleanup_glyph_cache(d->qctx);
+    d->cleanup();
+    delete d->qctx;
+    if (current && current != d->qctx)
+        current->makeCurrent();
+}
+
+/*! \fn bool QGLPixelBuffer::makeCurrent()
+
+    Makes this pbuffer the current OpenGL rendering context. Returns
+    true on success; otherwise returns false.
+
+    \sa QGLContext::makeCurrent(), doneCurrent()
+*/
+
+bool QGLPixelBuffer::makeCurrent()
+{
+    Q_D(QGLPixelBuffer);
+    if (d->invalid)
+        return false;
+    d->qctx->makeCurrent();
+    return true;
+}
+
+/*! \fn bool QGLPixelBuffer::doneCurrent()
+
+    Makes no context the current OpenGL context. Returns true on
+    success; otherwise returns false.
+*/
+
+bool QGLPixelBuffer::doneCurrent()
+{
+    Q_D(QGLPixelBuffer);
+    if (d->invalid)
+        return false;
+    d->qctx->doneCurrent();
+    return true;
+}
+
+/*!
+    Generates and binds a 2D GL texture that is the same size as the
+    pbuffer, and returns the texture's ID. This can be used in
+    conjunction with bindToDynamicTexture() and
+    updateDynamicTexture().
+
+    \sa size()
+*/
+
+#if (defined(Q_WS_X11) || defined(Q_WS_WIN)) && defined(QT_NO_EGL)
+GLuint QGLPixelBuffer::generateDynamicTexture() const
+{
+    Q_D(const QGLPixelBuffer);
+    GLuint texture;
+    glGenTextures(1, &texture);
+    glBindTexture(GL_TEXTURE_2D, texture);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, d->req_size.width(), d->req_size.height(), 0, GL_RGBA, GL_FLOAT, 0);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+    return texture;
+}
+#endif
+
+/*! \fn bool QGLPixelBuffer::bindToDynamicTexture(GLuint texture_id)
+
+    Binds the texture specified by \a texture_id to this pbuffer.
+    Returns true on success; otherwise returns false.
+
+    The texture must be of the same size and format as the pbuffer.
+
+    To unbind the texture, call releaseFromDynamicTexture(). While
+    the texture is bound, it is updated automatically when the
+    pbuffer contents change, eliminating the need for additional copy
+    operations.
+
+    Example:
+
+    \snippet doc/src/snippets/code/src_opengl_qglpixelbuffer.cpp 0
+
+    \warning This function uses the \c {render_texture} extension,
+    which is currently not supported under X11. An alternative that
+    works on all systems (including X11) is to manually copy the
+    pbuffer contents to a texture using updateDynamicTexture().
+
+    \warning For the bindToDynamicTexture() call to succeed on the
+    Mac OS X, the pbuffer needs a shared context, i.e. the
+    QGLPixelBuffer must be created with a share widget.
+
+    \sa generateDynamicTexture(), releaseFromDynamicTexture()
+*/
+
+/*! \fn void QGLPixelBuffer::releaseFromDynamicTexture()
+
+    Releases the pbuffer from any previously bound texture.
+
+    \sa bindToDynamicTexture()
+*/
+
+/*! \fn bool QGLPixelBuffer::hasOpenGLPbuffers()
+
+    Returns true if the OpenGL \c pbuffer extension is present on
+    this system; otherwise returns false.
+*/
+
+/*!
+    Copies the pbuffer contents into the texture specified with \a
+    texture_id.
+
+    The texture must be of the same size and format as the pbuffer.
+
+    Example:
+
+    \snippet doc/src/snippets/code/src_opengl_qglpixelbuffer.cpp 1
+
+    An alternative on Windows and Mac OS X systems that support the
+    \c render_texture extension is to use bindToDynamicTexture() to
+    get dynamic updates of the texture.
+
+    \sa generateDynamicTexture(), bindToDynamicTexture()
+*/
+void QGLPixelBuffer::updateDynamicTexture(GLuint texture_id) const
+{
+    Q_D(const QGLPixelBuffer);
+    if (d->invalid)
+        return;
+    glBindTexture(GL_TEXTURE_2D, texture_id);
+#ifndef QT_OPENGL_ES
+    glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 0, 0, d->req_size.width(), d->req_size.height(), 0);
+#else
+    glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 0, 0, d->req_size.width(), d->req_size.height(), 0);
+#endif
+}
+
+#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
+void QGLPixelBuffer::updateDynamicTexture(QMacCompatGLuint texture_id) const
+{
+    updateDynamicTexture(GLuint(texture_id));
+}
+#endif
+
+/*!
+    Returns the size of the pbuffer.
+*/
+QSize QGLPixelBuffer::size() const
+{
+    Q_D(const QGLPixelBuffer);
+    return d->req_size;
+}
+
+/*!
+    Returns the contents of the pbuffer as a QImage.
+*/
+QImage QGLPixelBuffer::toImage() const
+{
+    Q_D(const QGLPixelBuffer);
+    if (d->invalid)
+        return QImage();
+
+    const_cast<QGLPixelBuffer *>(this)->makeCurrent();
+    return qt_gl_read_framebuffer(d->req_size, d->format.alpha(), true);
+}
+
+/*!
+    Returns the native pbuffer handle.
+*/
+Qt::HANDLE QGLPixelBuffer::handle() const
+{
+    Q_D(const QGLPixelBuffer);
+    if (d->invalid)
+        return 0;
+    return (Qt::HANDLE) d->pbuf;
+}
+
+/*!
+    Returns true if this pbuffer is valid; otherwise returns false.
+*/
+bool QGLPixelBuffer::isValid() const
+{
+    Q_D(const QGLPixelBuffer);
+    return !d->invalid;
+}
+
+#if !defined(QT_OPENGL_ES_1)
+Q_GLOBAL_STATIC(QGLEngineThreadStorage<QGL2PaintEngineEx>, qt_buffer_2_engine)
+#endif
+
+#ifndef QT_OPENGL_ES_2
+Q_GLOBAL_STATIC(QGLEngineThreadStorage<QOpenGLPaintEngine>, qt_buffer_engine)
+#endif
+
+/*! \reimp */
+QPaintEngine *QGLPixelBuffer::paintEngine() const
+{
+#if defined(QT_OPENGL_ES_1)
+    return qt_buffer_engine()->engine();
+#elif defined(QT_OPENGL_ES_2)
+    return qt_buffer_2_engine()->engine();
+#else
+    if (qt_gl_preferGL2Engine())
+        return qt_buffer_2_engine()->engine();
+    else
+        return qt_buffer_engine()->engine();
+#endif
+}
+
+/*! \reimp */
+int QGLPixelBuffer::metric(PaintDeviceMetric metric) const
+{
+    Q_D(const QGLPixelBuffer);
+
+    float dpmx = qt_defaultDpiX()*100./2.54;
+    float dpmy = qt_defaultDpiY()*100./2.54;
+    int w = d->req_size.width();
+    int h = d->req_size.height();
+    switch (metric) {
+    case PdmWidth:
+        return w;
+
+    case PdmHeight:
+        return h;
+
+    case PdmWidthMM:
+        return qRound(w * 1000 / dpmx);
+
+    case PdmHeightMM:
+        return qRound(h * 1000 / dpmy);
+
+    case PdmNumColors:
+        return 0;
+
+    case PdmDepth:
+        return 32;//d->depth;
+
+    case PdmDpiX:
+        return qRound(dpmx * 0.0254);
+
+    case PdmDpiY:
+        return qRound(dpmy * 0.0254);
+
+    case PdmPhysicalDpiX:
+        return qRound(dpmx * 0.0254);
+
+    case PdmPhysicalDpiY:
+        return qRound(dpmy * 0.0254);
+
+    default:
+        qWarning("QGLPixelBuffer::metric(), Unhandled metric type: %d\n", metric);
+        break;
+    }
+    return 0;
+}
+
+/*!
+    Generates and binds a 2D GL texture to the current context, based
+    on \a image. The generated texture id is returned and can be used
+    in later glBindTexture() calls.
+
+    The \a target parameter specifies the texture target.
+
+    Equivalent to calling QGLContext::bindTexture().
+
+    \sa deleteTexture()
+*/
+GLuint QGLPixelBuffer::bindTexture(const QImage &image, GLenum target)
+{
+    Q_D(QGLPixelBuffer);
+#ifndef QT_OPENGL_ES
+    return d->qctx->bindTexture(image, target, GLint(GL_RGBA8));
+#else
+    return d->qctx->bindTexture(image, target, GL_RGBA);
+#endif
+}
+
+#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
+/*! \internal */
+GLuint QGLPixelBuffer::bindTexture(const QImage &image, QMacCompatGLenum target)
+{
+    Q_D(QGLPixelBuffer);
+    return d->qctx->bindTexture(image, target, QMacCompatGLint(GL_RGBA8));
+}
+#endif
+
+/*! \overload
+
+    Generates and binds a 2D GL texture based on \a pixmap.
+
+    Equivalent to calling QGLContext::bindTexture().
+
+    \sa deleteTexture()
+*/
+GLuint QGLPixelBuffer::bindTexture(const QPixmap &pixmap, GLenum target)
+{
+    Q_D(QGLPixelBuffer);
+#ifndef QT_OPENGL_ES
+    return d->qctx->bindTexture(pixmap, target, GLint(GL_RGBA8));
+#else
+    return d->qctx->bindTexture(pixmap, target, GL_RGBA);
+#endif
+}
+
+#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
+/*! \internal */
+GLuint QGLPixelBuffer::bindTexture(const QPixmap &pixmap, QMacCompatGLenum target)
+{
+    Q_D(QGLPixelBuffer);
+    return d->qctx->bindTexture(pixmap, target, QMacCompatGLint(GL_RGBA8));
+}
+#endif
+
+/*! \overload
+
+    Reads the DirectDrawSurface (DDS) compressed file \a fileName and
+    generates a 2D GL texture from it.
+
+    Equivalent to calling QGLContext::bindTexture().
+
+    \sa deleteTexture()
+*/
+GLuint QGLPixelBuffer::bindTexture(const QString &fileName)
+{
+    Q_D(QGLPixelBuffer);
+    return d->qctx->bindTexture(fileName);
+}
+
+/*!
+    Removes the texture identified by \a texture_id from the texture cache.
+
+    Equivalent to calling QGLContext::deleteTexture().
+ */
+void QGLPixelBuffer::deleteTexture(GLuint texture_id)
+{
+    Q_D(QGLPixelBuffer);
+    d->qctx->deleteTexture(texture_id);
+}
+
+#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
+/*! \internal */
+void QGLPixelBuffer::deleteTexture(QMacCompatGLuint texture_id)
+{
+    Q_D(QGLPixelBuffer);
+    d->qctx->deleteTexture(texture_id);
+}
+#endif
+
+/*!
+    \since 4.4
+
+    Draws the given texture, \a textureId, to the given target rectangle,
+    \a target, in OpenGL model space. The \a textureTarget should be a 2D
+    texture target.
+
+    Equivalent to the corresponding QGLContext::drawTexture().
+*/
+void QGLPixelBuffer::drawTexture(const QRectF &target, GLuint textureId, GLenum textureTarget)
+{
+    Q_D(QGLPixelBuffer);
+    d->qctx->drawTexture(target, textureId, textureTarget);
+}
+
+#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
+/*! \internal */
+void QGLPixelBuffer::drawTexture(const QRectF &target, QMacCompatGLuint textureId, QMacCompatGLenum textureTarget)
+{
+    Q_D(QGLPixelBuffer);
+    d->qctx->drawTexture(target, textureId, textureTarget);
+}
+#endif
+
+/*!
+    \since 4.4
+
+    Draws the given texture, \a textureId, at the given \a point in OpenGL model
+    space. The textureTarget parameter should be a 2D texture target.
+
+    Equivalent to the corresponding QGLContext::drawTexture().
+*/
+void QGLPixelBuffer::drawTexture(const QPointF &point, GLuint textureId, GLenum textureTarget)
+{
+    Q_D(QGLPixelBuffer);
+    d->qctx->drawTexture(point, textureId, textureTarget);
+}
+
+#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
+/*! \internal */
+void QGLPixelBuffer::drawTexture(const QPointF &point, QMacCompatGLuint textureId, QMacCompatGLenum textureTarget)
+{
+    Q_D(QGLPixelBuffer);
+    d->qctx->drawTexture(point, textureId, textureTarget);
+}
+#endif
+
+/*!
+    Returns the format of the pbuffer. The format may be different
+    from the one that was requested.
+*/
+QGLFormat QGLPixelBuffer::format() const
+{
+    Q_D(const QGLPixelBuffer);
+    return d->format;
+}
+
+/*! \fn int QGLPixelBuffer::devType() const
+    \internal
+*/
+
+QT_END_NAMESPACE
diff --git a/src/opengl/qglpixelbuffer.h b/src/opengl/qglpixelbuffer.h
new file mode 100644
index 0000000000..ae053dc0c3
--- /dev/null
+++ b/src/opengl/qglpixelbuffer.h
@@ -0,0 +1,122 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QGLPIXELBUFFER_H
+#define QGLPIXELBUFFER_H
+
+#include <QtOpenGL/qgl.h>
+#include <QtGui/qpaintdevice.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(OpenGL)
+
+class QGLPixelBufferPrivate;
+
+class Q_OPENGL_EXPORT QGLPixelBuffer : public QPaintDevice
+{
+    Q_DECLARE_PRIVATE(QGLPixelBuffer)
+public:
+    QGLPixelBuffer(const QSize &size, const QGLFormat &format = QGLFormat::defaultFormat(),
+                   QGLWidget *shareWidget = 0);
+    QGLPixelBuffer(int width, int height, const QGLFormat &format = QGLFormat::defaultFormat(),
+                   QGLWidget *shareWidget = 0);
+    virtual ~QGLPixelBuffer();
+
+    bool isValid() const;
+    bool makeCurrent();
+    bool doneCurrent();
+
+    GLuint generateDynamicTexture() const;
+    bool bindToDynamicTexture(GLuint texture);
+    void releaseFromDynamicTexture();
+    void updateDynamicTexture(GLuint texture_id) const;
+
+    GLuint bindTexture(const QImage &image, GLenum target = GL_TEXTURE_2D);
+    GLuint bindTexture(const QPixmap &pixmap, GLenum target = GL_TEXTURE_2D);
+    GLuint bindTexture(const QString &fileName);
+    void deleteTexture(GLuint texture_id);
+
+    void drawTexture(const QRectF &target, GLuint textureId, GLenum textureTarget = GL_TEXTURE_2D);
+    void drawTexture(const QPointF &point, GLuint textureId, GLenum textureTarget = GL_TEXTURE_2D);
+
+#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
+    bool bindToDynamicTexture(QMacCompatGLuint texture);
+    void updateDynamicTexture(QMacCompatGLuint texture_id) const;
+    GLuint bindTexture(const QImage &image, QMacCompatGLenum target = GL_TEXTURE_2D);
+    GLuint bindTexture(const QPixmap &pixmap, QMacCompatGLenum target = GL_TEXTURE_2D);
+
+    void drawTexture(const QRectF &target, QMacCompatGLuint textureId, QMacCompatGLenum textureTarget = GL_TEXTURE_2D);
+    void drawTexture(const QPointF &point, QMacCompatGLuint textureId, QMacCompatGLenum textureTarget = GL_TEXTURE_2D);
+
+    void deleteTexture(QMacCompatGLuint texture_id);
+#endif
+
+    QSize size() const;
+    Qt::HANDLE handle() const;
+    QImage toImage() const;
+
+    QPaintEngine *paintEngine() const;
+    QGLFormat format() const;
+
+    static bool hasOpenGLPbuffers();
+
+protected:
+    int metric(PaintDeviceMetric metric) const;
+    int devType() const { return QInternal::Pbuffer; }
+
+private:
+    Q_DISABLE_COPY(QGLPixelBuffer)
+    QScopedPointer<QGLPixelBufferPrivate> d_ptr;
+    friend class QGLDrawable;
+    friend class QGLWindowSurface;
+    friend class QGLPaintDevice;
+    friend class QGLPBufferGLPaintDevice;
+    friend class QGLContextPrivate;
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QGLPIXELBUFFER_H
diff --git a/src/opengl/qglpixelbuffer_egl.cpp b/src/opengl/qglpixelbuffer_egl.cpp
new file mode 100644
index 0000000000..c0e6f4eae6
--- /dev/null
+++ b/src/opengl/qglpixelbuffer_egl.cpp
@@ -0,0 +1,224 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <qdebug.h>
+#include "qglpixelbuffer.h"
+#include "qglpixelbuffer_p.h"
+#include "qgl_egl_p.h"
+
+#include <qimage.h>
+#include <private/qgl_p.h>
+
+QT_BEGIN_NAMESPACE
+
+#ifdef EGL_BIND_TO_TEXTURE_RGBA
+#define QGL_RENDER_TEXTURE 1
+#else
+#define QGL_RENDER_TEXTURE 0
+#endif
+
+bool QGLPixelBufferPrivate::init(const QSize &size, const QGLFormat &f, QGLWidget *shareWidget)
+{
+    // Create the EGL context.
+    ctx = new QEglContext();
+    ctx->setApi(QEgl::OpenGL);
+
+    // Find the shared context.
+    QEglContext *shareContext = 0;
+    if (shareWidget && shareWidget->d_func()->glcx)
+        shareContext = shareWidget->d_func()->glcx->d_func()->eglContext;
+
+    // Choose an appropriate configuration.  We use the best format
+    // we can find, even if it is greater than the requested format.
+    // We try for a pbuffer that is capable of texture rendering if possible.
+    textureFormat = EGL_NONE;
+    if (shareContext) {
+        // Use the same configuration as the widget we are sharing with.
+        ctx->setConfig(shareContext->config());
+#if QGL_RENDER_TEXTURE
+        if (ctx->configAttrib(EGL_BIND_TO_TEXTURE_RGBA) == EGL_TRUE)
+            textureFormat = EGL_TEXTURE_RGBA;
+        else if (ctx->configAttrib(EGL_BIND_TO_TEXTURE_RGB) == EGL_TRUE)
+            textureFormat = EGL_TEXTURE_RGB;
+#endif
+    } else {
+        QEglProperties configProps;
+        qt_eglproperties_set_glformat(configProps, f);
+        configProps.setDeviceType(QInternal::Pbuffer);
+        configProps.setRenderableType(ctx->api());
+        bool ok = false;
+#if QGL_RENDER_TEXTURE
+        textureFormat = EGL_TEXTURE_RGBA;
+        configProps.setValue(EGL_BIND_TO_TEXTURE_RGBA, EGL_TRUE);
+        ok = ctx->chooseConfig(configProps, QEgl::BestPixelFormat);
+        if (!ok) {
+            // Try again with RGB texture rendering.
+            textureFormat = EGL_TEXTURE_RGB;
+            configProps.removeValue(EGL_BIND_TO_TEXTURE_RGBA);
+            configProps.setValue(EGL_BIND_TO_TEXTURE_RGB, EGL_TRUE);
+            ok = ctx->chooseConfig(configProps, QEgl::BestPixelFormat);
+            if (!ok) {
+                // One last try for a pbuffer with no texture rendering.
+                configProps.removeValue(EGL_BIND_TO_TEXTURE_RGB);
+                textureFormat = EGL_NONE;
+            }
+        }
+#endif
+        if (!ok) {
+            if (!ctx->chooseConfig(configProps, QEgl::BestPixelFormat)) {
+                delete ctx;
+                ctx = 0;
+                return false;
+            }
+        }
+    }
+
+    // Retrieve the actual format properties.
+    qt_glformat_from_eglconfig(format, ctx->config());
+
+    // Create the attributes needed for the pbuffer.
+    QEglProperties attribs;
+    attribs.setValue(EGL_WIDTH, size.width());
+    attribs.setValue(EGL_HEIGHT, size.height());
+#if QGL_RENDER_TEXTURE
+    if (textureFormat != EGL_NONE) {
+        attribs.setValue(EGL_TEXTURE_FORMAT, textureFormat);
+        attribs.setValue(EGL_TEXTURE_TARGET, EGL_TEXTURE_2D);
+    }
+#endif
+
+    // Create the pbuffer surface.
+    pbuf = eglCreatePbufferSurface(ctx->display(), ctx->config(), attribs.properties());
+#if QGL_RENDER_TEXTURE
+    if (pbuf == EGL_NO_SURFACE && textureFormat != EGL_NONE) {
+        // Try again with texture rendering disabled.
+        textureFormat = EGL_NONE;
+        attribs.removeValue(EGL_TEXTURE_FORMAT);
+        attribs.removeValue(EGL_TEXTURE_TARGET);
+        pbuf = eglCreatePbufferSurface(ctx->display(), ctx->config(), attribs.properties());
+    }
+#endif
+    if (pbuf == EGL_NO_SURFACE) {
+        qWarning() << "QGLPixelBufferPrivate::init(): Unable to create EGL pbuffer surface:" << QEgl::errorString();
+        return false;
+    }
+
+    // Create a new context for the configuration.
+    if (!ctx->createContext(shareContext)) {
+        delete ctx;
+        ctx = 0;
+        return false;
+    }
+
+    return true;
+}
+
+bool QGLPixelBufferPrivate::cleanup()
+{
+    // No need to destroy "pbuf" here - it is done in QGLContext::reset().
+    return true;
+}
+
+bool QGLPixelBuffer::bindToDynamicTexture(GLuint texture_id)
+{
+#if QGL_RENDER_TEXTURE
+    Q_D(QGLPixelBuffer);
+    if (d->invalid || d->textureFormat == EGL_NONE || !d->ctx)
+        return false;
+    glBindTexture(GL_TEXTURE_2D, texture_id);
+    return eglBindTexImage(d->ctx->display(), d->pbuf, EGL_BACK_BUFFER);
+#else
+    Q_UNUSED(texture_id);
+    return false;
+#endif
+}
+
+void QGLPixelBuffer::releaseFromDynamicTexture()
+{
+#if QGL_RENDER_TEXTURE
+    Q_D(QGLPixelBuffer);
+    if (d->invalid || d->textureFormat == EGL_NONE || !d->ctx)
+        return;
+    eglReleaseTexImage(d->ctx->display(), d->pbuf, EGL_BACK_BUFFER);
+#endif
+}
+
+
+GLuint QGLPixelBuffer::generateDynamicTexture() const
+{
+#if QGL_RENDER_TEXTURE
+    Q_D(const QGLPixelBuffer);
+    GLuint texture;
+    glGenTextures(1, &texture);
+    glBindTexture(GL_TEXTURE_2D, texture);
+    if (d->textureFormat == EGL_TEXTURE_RGB)
+        glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, d->req_size.width(), d->req_size.height(), 0, GL_RGB, GL_UNSIGNED_BYTE, 0);
+    else
+        glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, d->req_size.width(), d->req_size.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+    return texture;
+#else
+    return 0;
+#endif
+}
+
+bool QGLPixelBuffer::hasOpenGLPbuffers()
+{
+    // See if we have at least 1 configuration that matches the default format.
+    EGLDisplay dpy = QEgl::display();
+    if (dpy == EGL_NO_DISPLAY)
+        return false;
+    QEglProperties configProps;
+    qt_eglproperties_set_glformat(configProps, QGLFormat::defaultFormat());
+    configProps.setDeviceType(QInternal::Pbuffer);
+    configProps.setRenderableType(QEgl::OpenGL);
+    do {
+        EGLConfig cfg = 0;
+        EGLint matching = 0;
+        if (eglChooseConfig(dpy, configProps.properties(),
+                            &cfg, 1, &matching) && matching > 0)
+            return true;
+    } while (configProps.reduceConfiguration());
+    return false;
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/qglpixelbuffer_mac.mm b/src/opengl/qglpixelbuffer_mac.mm
new file mode 100644
index 0000000000..b793ce5dab
--- /dev/null
+++ b/src/opengl/qglpixelbuffer_mac.mm
@@ -0,0 +1,331 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qglpixelbuffer.h"
+#include "qglpixelbuffer_p.h"
+
+#ifndef QT_MAC_USE_COCOA
+#include <AGL/agl.h>
+#endif
+
+#include <qimage.h>
+#include <private/qgl_p.h>
+#include <qdebug.h>
+
+QT_BEGIN_NAMESPACE
+
+#ifndef GL_TEXTURE_RECTANGLE_EXT
+#define GL_TEXTURE_RECTANGLE_EXT 0x84F5
+#endif
+
+static int nearest_gl_texture_size(int v)
+{
+    int n = 0, last = 0;
+    for (int s = 0; s < 32; ++s) {
+        if (((v>>s) & 1) == 1) {
+            ++n;
+            last = s;
+        }
+    }
+    if (n > 1)
+        return 1 << (last+1);
+    return 1 << last;
+}
+
+bool QGLPixelBufferPrivate::init(const QSize &size, const QGLFormat &f, QGLWidget *shareWidget)
+{
+#ifdef QT_MAC_USE_COCOA
+    Q_Q(QGLPixelBuffer);
+    // create a dummy context
+    QGLContext context(f, q);
+    context.create(shareWidget ? shareWidget->context() : 0);
+
+    if (context.isSharing())
+        share_ctx = shareWidget->context()->d_func()->cx;
+
+    // steal the NSOpenGLContext and update the format
+    ctx = context.d_func()->cx;
+    context.d_func()->cx = 0;
+    // d->cx will be set to ctx later in
+    // QGLPixelBufferPrivate::common_init, so we need to retain it:
+    [static_cast<NSOpenGLContext *>(ctx) retain];
+
+    format = context.format();
+
+    GLenum target = GL_TEXTURE_2D;
+
+    if ((QGLExtensions::glExtensions() & QGLExtensions::TextureRectangle)
+        && (size.width() != nearest_gl_texture_size(size.width())
+            || size.height() != nearest_gl_texture_size(size.height())))
+    {
+        target = GL_TEXTURE_RECTANGLE_EXT;
+    }
+
+    pbuf = [[NSOpenGLPixelBuffer alloc] initWithTextureTarget:target
+                                        textureInternalFormat:GL_RGBA
+                                        textureMaxMipMapLevel:0
+                                                  pixelsWide:size.width()
+                                                  pixelsHigh:size.height()];
+    if (!pbuf) {
+        qWarning("QGLPixelBuffer: Cannot create a pbuffer");
+        return false;
+    }
+
+    [static_cast<NSOpenGLContext *>(ctx) setPixelBuffer:static_cast<NSOpenGLPixelBuffer *>(pbuf)
+                                            cubeMapFace:0
+                                            mipMapLevel:0
+                                   currentVirtualScreen:0];
+    return true;
+#else
+    GLint attribs[40], i=0;
+    attribs[i++] = AGL_RGBA;
+    attribs[i++] = AGL_BUFFER_SIZE;
+    attribs[i++] = 32;
+    attribs[i++] = AGL_LEVEL;
+    attribs[i++] = f.plane();
+    if (f.redBufferSize() != -1) {
+        attribs[i++] = AGL_RED_SIZE;
+        attribs[i++] = f.redBufferSize();
+    }
+    if (f.greenBufferSize() != -1) {
+        attribs[i++] = AGL_GREEN_SIZE;
+        attribs[i++] = f.greenBufferSize();
+    }
+    if (f.blueBufferSize() != -1) {
+        attribs[i++] = AGL_BLUE_SIZE;
+        attribs[i++] = f.blueBufferSize();
+    }
+    if (f.stereo())
+        attribs[i++] = AGL_STEREO;
+    if (f.alpha()) {
+        attribs[i++] = AGL_ALPHA_SIZE;
+        attribs[i++] = f.alphaBufferSize() == -1 ? 8 : f.alphaBufferSize();
+    }
+    if (f.stencil()) {
+        attribs[i++] = AGL_STENCIL_SIZE;
+        attribs[i++] = f.stencilBufferSize() == -1 ? 8 : f.stencilBufferSize();
+    }
+    if (f.depth()) {
+        attribs[i++] = AGL_DEPTH_SIZE;
+        attribs[i++] = f.depthBufferSize() == -1 ? 32 : f.depthBufferSize();
+    }
+    if (f.accum()) {
+        attribs[i++] = AGL_ACCUM_RED_SIZE;
+        attribs[i++] = f.accumBufferSize() == -1 ? 16 : f.accumBufferSize();
+        attribs[i++] = AGL_ACCUM_BLUE_SIZE;
+        attribs[i++] = f.accumBufferSize() == -1 ? 16 : f.accumBufferSize();
+        attribs[i++] = AGL_ACCUM_GREEN_SIZE;
+        attribs[i++] = f.accumBufferSize() == -1 ? 16 : f.accumBufferSize();
+        attribs[i++] = AGL_ACCUM_ALPHA_SIZE;
+        attribs[i++] = f.accumBufferSize() == -1 ? 16 : f.accumBufferSize();
+    }
+
+    if (f.sampleBuffers()) {
+        attribs[i++] = AGL_SAMPLE_BUFFERS_ARB;
+        attribs[i++] = 1;
+        attribs[i++] = AGL_SAMPLES_ARB;
+        attribs[i++] = f.samples() == -1 ? 4 : f.samples();
+    }
+    attribs[i] = AGL_NONE;
+
+    AGLPixelFormat format = aglChoosePixelFormat(0, 0, attribs);
+    if (!format) {
+	qWarning("QGLPixelBuffer: Unable to find a pixel format (AGL error %d).",
+		 (int) aglGetError());
+        return false;
+    }
+
+    GLint res;
+    aglDescribePixelFormat(format, AGL_LEVEL, &res);
+    this->format.setPlane(res);
+    aglDescribePixelFormat(format, AGL_DOUBLEBUFFER, &res);
+    this->format.setDoubleBuffer(res);
+    aglDescribePixelFormat(format, AGL_DEPTH_SIZE, &res);
+    this->format.setDepth(res);
+    if (this->format.depth())
+	this->format.setDepthBufferSize(res);
+    aglDescribePixelFormat(format, AGL_RGBA, &res);
+    this->format.setRgba(res);
+    aglDescribePixelFormat(format, AGL_RED_SIZE, &res);
+    this->format.setRedBufferSize(res);
+    aglDescribePixelFormat(format, AGL_GREEN_SIZE, &res);
+    this->format.setGreenBufferSize(res);
+    aglDescribePixelFormat(format, AGL_BLUE_SIZE, &res);
+    this->format.setBlueBufferSize(res);
+    aglDescribePixelFormat(format, AGL_ALPHA_SIZE, &res);
+    this->format.setAlpha(res);
+    if (this->format.alpha())
+	this->format.setAlphaBufferSize(res);
+    aglDescribePixelFormat(format, AGL_ACCUM_RED_SIZE, &res);
+    this->format.setAccum(res);
+    if (this->format.accum())
+	this->format.setAccumBufferSize(res);
+    aglDescribePixelFormat(format, AGL_STENCIL_SIZE, &res);
+    this->format.setStencil(res);
+    if (this->format.stencil())
+	this->format.setStencilBufferSize(res);
+    aglDescribePixelFormat(format, AGL_STEREO, &res);
+    this->format.setStereo(res);
+    aglDescribePixelFormat(format, AGL_SAMPLE_BUFFERS_ARB, &res);
+    this->format.setSampleBuffers(res);
+    if (this->format.sampleBuffers()) {
+        aglDescribePixelFormat(format, AGL_SAMPLES_ARB, &res);
+        this->format.setSamples(res);
+    }
+
+    AGLContext share = 0;
+    if (shareWidget)
+	share = share_ctx = static_cast<AGLContext>(shareWidget->d_func()->glcx->d_func()->cx);
+    ctx = aglCreateContext(format, share);
+    if (!ctx) {
+	qWarning("QGLPixelBuffer: Unable to create a context (AGL error %d).",
+		 (int) aglGetError());
+	return false;
+    }
+
+    GLenum target = GL_TEXTURE_2D;
+
+    if ((QGLExtensions::glExtensions() & QGLExtensions::TextureRectangle)
+        && (size.width() != nearest_gl_texture_size(size.width())
+            || size.height() != nearest_gl_texture_size(size.height())))
+    {
+        target = GL_TEXTURE_RECTANGLE_EXT;
+    }
+
+    if (!aglCreatePBuffer(size.width(), size.height(), target, GL_RGBA, 0, &pbuf)) {
+	qWarning("QGLPixelBuffer: Unable to create a pbuffer (AGL error %d).",
+		 (int) aglGetError());
+	return false;
+    }
+
+    if (!aglSetPBuffer(ctx, pbuf, 0, 0, 0)) {
+	qWarning("QGLPixelBuffer: Unable to set pbuffer (AGL error %d).",
+		 (int) aglGetError());
+	return false;
+    }
+
+    aglDestroyPixelFormat(format);
+    return true;
+
+#endif
+}
+
+bool QGLPixelBufferPrivate::cleanup()
+{
+#ifdef QT_MAC_USE_COCOA
+    [static_cast<NSOpenGLPixelBuffer *>(pbuf) release];
+    pbuf = 0;
+    [static_cast<NSOpenGLContext *>(ctx) release];
+    ctx = 0;
+#else
+    aglDestroyPBuffer(pbuf);
+#endif
+    return true;
+}
+
+bool QGLPixelBuffer::bindToDynamicTexture(GLuint texture_id)
+{
+    Q_D(QGLPixelBuffer);
+    if (d->invalid || !d->share_ctx)
+        return false;
+
+#ifdef QT_MAC_USE_COCOA
+    NSOpenGLContext *oldContext = [NSOpenGLContext currentContext];
+    if (d->share_ctx != oldContext)
+        [static_cast<NSOpenGLContext *>(d->share_ctx) makeCurrentContext];
+    glBindTexture(GL_TEXTURE_2D, texture_id);
+    [static_cast<NSOpenGLContext *>(d->share_ctx)
+            setTextureImageToPixelBuffer:static_cast<NSOpenGLPixelBuffer *>(d->pbuf)
+            colorBuffer:GL_FRONT];
+    if (oldContext && oldContext != d->share_ctx)
+        [oldContext makeCurrentContext];
+    return true;
+#else
+    aglSetCurrentContext(d->share_ctx);
+    glBindTexture(GL_TEXTURE_2D, texture_id);
+    aglTexImagePBuffer(d->share_ctx, d->pbuf, GL_FRONT);
+    return true;
+#endif
+}
+
+#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
+bool QGLPixelBuffer::bindToDynamicTexture(QMacCompatGLuint texture_id)
+{
+    return bindToDynamicTexture(GLuint(texture_id));
+}
+#endif
+
+void QGLPixelBuffer::releaseFromDynamicTexture()
+{
+}
+
+GLuint QGLPixelBuffer::generateDynamicTexture() const
+{
+#ifdef QT_MAC_USE_COCOA
+    Q_D(const QGLPixelBuffer);
+    NSOpenGLContext *oldContext = [NSOpenGLContext currentContext];
+    if (d->share_ctx != oldContext)
+        [static_cast<NSOpenGLContext *>(d->share_ctx) makeCurrentContext];
+    GLuint texture;
+    glGenTextures(1, &texture);
+    glBindTexture(GL_TEXTURE_2D, texture);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+
+    if (oldContext && oldContext != d->share_ctx)
+        [oldContext makeCurrentContext];
+    return texture;
+#else
+    GLuint texture;
+    glGenTextures(1, &texture);
+    glBindTexture(GL_TEXTURE_2D, texture);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+    return texture;
+#endif
+}
+
+bool QGLPixelBuffer::hasOpenGLPbuffers()
+{
+    return true;
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/qglpixelbuffer_p.h b/src/opengl/qglpixelbuffer_p.h
new file mode 100644
index 0000000000..65bbd26b78
--- /dev/null
+++ b/src/opengl/qglpixelbuffer_p.h
@@ -0,0 +1,209 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QGLPIXELBUFFER_P_H
+#define QGLPIXELBUFFER_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of the QLibrary class.  This header file may change from
+// version to version without notice, or even be removed.
+//
+// We mean it.
+//
+
+QT_BEGIN_NAMESPACE
+
+QT_BEGIN_INCLUDE_NAMESPACE
+#include "QtOpenGL/qglpixelbuffer.h"
+#include <private/qgl_p.h>
+#include <private/qglpaintdevice_p.h>
+
+#if defined(Q_WS_X11) && defined(QT_NO_EGL)
+#include <GL/glx.h>
+
+// The below is needed to for compilation on HPUX, due to broken GLX
+// headers. Some of the systems define GLX_VERSION_1_3 without
+// defining the GLXFBConfig structure, which is wrong.
+#if defined (Q_OS_HPUX) && defined(QT_DEFINE_GLXFBCONFIG_STRUCT)
+typedef unsigned long GLXPbuffer;
+
+struct GLXFBConfig {
+    int visualType;
+    int transparentType;
+                                /*    colors are floats scaled to ints */
+    int transparentRed, transparentGreen, transparentBlue, transparentAlpha;
+    int transparentIndex;
+
+    int visualCaveat;
+
+    int associatedVisualId;
+    int screen;
+
+    int drawableType;
+    int renderType;
+
+    int maxPbufferWidth, maxPbufferHeight, maxPbufferPixels;
+    int optimalPbufferWidth, optimalPbufferHeight;  /* for SGIX_pbuffer */
+
+    int visualSelectGroup;	/* visuals grouped by select priority */
+
+    unsigned int id;
+
+    GLboolean rgbMode;
+    GLboolean colorIndexMode;
+    GLboolean doubleBufferMode;
+    GLboolean stereoMode;
+    GLboolean haveAccumBuffer;
+    GLboolean haveDepthBuffer;
+    GLboolean haveStencilBuffer;
+
+    /* The number of bits present in various buffers */
+    GLint accumRedBits, accumGreenBits, accumBlueBits, accumAlphaBits;
+    GLint depthBits;
+    GLint stencilBits;
+    GLint indexBits;
+    GLint redBits, greenBits, blueBits, alphaBits;
+    GLuint redMask, greenMask, blueMask, alphaMask;
+
+    GLuint multiSampleSize;     /* Number of samples per pixel (0 if no ms) */
+
+    GLuint nMultiSampleBuffers; /* Number of available ms buffers */
+    GLint maxAuxBuffers;
+
+    /* frame buffer level */
+    GLint level;
+
+    /* color ranges (for SGI_color_range) */
+    GLboolean extendedRange;
+    GLdouble minRed, maxRed;
+    GLdouble minGreen, maxGreen;
+    GLdouble minBlue, maxBlue;
+    GLdouble minAlpha, maxAlpha;
+};
+
+#endif // Q_OS_HPUX
+
+#elif defined(Q_WS_WIN)
+DECLARE_HANDLE(HPBUFFERARB);
+#elif !defined(QT_NO_EGL)
+#include <QtGui/private/qegl_p.h>
+#endif
+QT_END_INCLUDE_NAMESPACE
+
+class QEglContext;
+
+
+class QGLPBufferGLPaintDevice : public QGLPaintDevice
+{
+public:
+    virtual QPaintEngine* paintEngine() const {return pbuf->paintEngine();}
+    virtual QSize size() const {return pbuf->size();}
+    virtual QGLContext* context() const;
+    virtual void endPaint();
+    void setPBuffer(QGLPixelBuffer* pb);
+private:
+    QGLPixelBuffer* pbuf;
+};
+
+class QGLPixelBufferPrivate {
+    Q_DECLARE_PUBLIC(QGLPixelBuffer)
+public:
+    QGLPixelBufferPrivate(QGLPixelBuffer *q) : q_ptr(q), invalid(true), qctx(0), pbuf(0), ctx(0)
+    {
+#ifdef Q_WS_WIN
+        dc = 0;
+#elif defined(Q_WS_MACX)
+        share_ctx = 0;
+#endif
+    }
+    bool init(const QSize &size, const QGLFormat &f, QGLWidget *shareWidget);
+    void common_init(const QSize &size, const QGLFormat &f, QGLWidget *shareWidget);
+    bool cleanup();
+
+    QGLPixelBuffer *q_ptr;
+    bool invalid;
+    QGLContext *qctx;
+    QGLPBufferGLPaintDevice glDevice;
+    QGLFormat format;
+
+    QGLFormat req_format;
+    QPointer<QGLWidget> req_shareWidget;
+    QSize req_size;
+
+#if defined(Q_WS_X11) && defined(QT_NO_EGL)
+    GLXPbuffer pbuf;
+    GLXContext ctx;
+#elif defined(Q_WS_WIN)
+    HDC dc;
+    bool has_render_texture :1;
+#if !defined(QT_OPENGL_ES)
+    HPBUFFERARB pbuf;
+    HGLRC ctx;
+#endif
+#elif defined(Q_WS_MACX)
+#  ifdef QT_MAC_USE_COCOA
+    void *pbuf;
+    void *ctx;
+    void *share_ctx;
+#  else
+    AGLPbuffer pbuf;
+    AGLContext ctx;
+    AGLContext share_ctx;
+#  endif
+#endif
+#ifndef QT_NO_EGL
+    EGLSurface pbuf;
+    QEglContext *ctx;
+    int textureFormat;
+#elif defined(Q_WS_QPA)
+    //stubs
+    void *pbuf;
+    void *ctx;
+#endif
+};
+
+QT_END_NAMESPACE
+
+#endif // QGLPIXELBUFFER_P_H
diff --git a/src/opengl/qglpixelbuffer_stub.cpp b/src/opengl/qglpixelbuffer_stub.cpp
new file mode 100644
index 0000000000..98203fda26
--- /dev/null
+++ b/src/opengl/qglpixelbuffer_stub.cpp
@@ -0,0 +1,84 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <qdebug.h>
+#include "qglpixelbuffer.h"
+#include "qglpixelbuffer_p.h"
+
+#include <qimage.h>
+#include <private/qgl_p.h>
+
+QT_BEGIN_NAMESPACE
+
+bool QGLPixelBufferPrivate::init(const QSize &size, const QGLFormat &f, QGLWidget *shareWidget)
+{
+    Q_UNUSED(size);
+    Q_UNUSED(f);
+    Q_UNUSED(shareWidget);
+    return false;
+}
+
+bool QGLPixelBufferPrivate::cleanup()
+{
+    return false;
+}
+
+bool QGLPixelBuffer::bindToDynamicTexture(GLuint texture_id)
+{
+    Q_UNUSED(texture_id);
+    return false;
+}
+
+void QGLPixelBuffer::releaseFromDynamicTexture()
+{
+}
+
+GLuint QGLPixelBuffer::generateDynamicTexture() const
+{
+    return 0;
+}
+
+bool QGLPixelBuffer::hasOpenGLPbuffers()
+{
+    return false;
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/qglpixelbuffer_win.cpp b/src/opengl/qglpixelbuffer_win.cpp
new file mode 100644
index 0000000000..a75ac47e03
--- /dev/null
+++ b/src/opengl/qglpixelbuffer_win.cpp
@@ -0,0 +1,403 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <qglpixelbuffer.h>
+#include <qgl.h>
+#include <private/qgl_p.h>
+
+#include <private/qglpixelbuffer_p.h>
+
+#include <qimage.h>
+#include <qdebug.h>
+
+QT_BEGIN_NAMESPACE
+
+/* WGL_WGLEXT_PROTOTYPES */
+typedef const char * (WINAPI * PFNWGLGETEXTENSIONSSTRINGARBPROC) (HDC hdc);
+typedef HPBUFFERARB (WINAPI * PFNWGLCREATEPBUFFERARBPROC) (HDC hDC, int iPixelFormat, int iWidth, int iHeight, const int *piAttribList);
+typedef HDC (WINAPI * PFNWGLGETPBUFFERDCARBPROC) (HPBUFFERARB hPbuffer);
+typedef int (WINAPI * PFNWGLRELEASEPBUFFERDCARBPROC) (HPBUFFERARB hPbuffer, HDC hDC);
+typedef BOOL (WINAPI * PFNWGLDESTROYPBUFFERARBPROC) (HPBUFFERARB hPbuffer);
+typedef BOOL (WINAPI * PFNWGLQUERYPBUFFERARBPROC) (HPBUFFERARB hPbuffer, int iAttribute, int *piValue);
+typedef BOOL (WINAPI * PFNWGLGETPIXELFORMATATTRIBIVARBPROC) (HDC hdc, int iPixelFormat, int iLayerPlane, UINT nAttributes, const int *piAttributes, int *piValues);
+typedef BOOL (WINAPI * PFNWGLGETPIXELFORMATATTRIBFVARBPROC) (HDC hdc, int iPixelFormat, int iLayerPlane, UINT nAttributes, const int *piAttributes, FLOAT *pfValues);
+typedef BOOL (WINAPI * PFNWGLCHOOSEPIXELFORMATARBPROC) (HDC hdc, const int *piAttribIList, const FLOAT *pfAttribFList, UINT nMaxFormats, int *piFormats, UINT *nNumFormats);
+typedef BOOL (WINAPI * PFNWGLBINDTEXIMAGEARBPROC) (HPBUFFERARB hPbuffer, int iBuffer);
+typedef BOOL (WINAPI * PFNWGLRELEASETEXIMAGEARBPROC) (HPBUFFERARB hPbuffer, int iBuffer);
+typedef BOOL (WINAPI * PFNWGLSETPBUFFERATTRIBARBPROC) (HPBUFFERARB hPbuffer, const int * piAttribList);
+
+#ifndef WGL_ARB_pbuffer
+#define WGL_DRAW_TO_PBUFFER_ARB        0x202D
+#define WGL_MAX_PBUFFER_PIXELS_ARB     0x202E
+#define WGL_MAX_PBUFFER_WIDTH_ARB      0x202F
+#define WGL_MAX_PBUFFER_HEIGHT_ARB     0x2030
+#define WGL_PBUFFER_LARGEST_ARB        0x2033
+#define WGL_PBUFFER_WIDTH_ARB          0x2034
+#define WGL_PBUFFER_HEIGHT_ARB         0x2035
+#define WGL_PBUFFER_LOST_ARB           0x2036
+#endif
+
+#ifndef WGL_ARB_pixel_format
+#define WGL_NUMBER_PIXEL_FORMATS_ARB   0x2000
+#define WGL_DRAW_TO_WINDOW_ARB         0x2001
+#define WGL_DRAW_TO_BITMAP_ARB         0x2002
+#define WGL_ACCELERATION_ARB           0x2003
+#define WGL_NEED_PALETTE_ARB           0x2004
+#define WGL_NEED_SYSTEM_PALETTE_ARB    0x2005
+#define WGL_SWAP_LAYER_BUFFERS_ARB     0x2006
+#define WGL_SWAP_METHOD_ARB            0x2007
+#define WGL_NUMBER_OVERLAYS_ARB        0x2008
+#define WGL_NUMBER_UNDERLAYS_ARB       0x2009
+#define WGL_TRANSPARENT_ARB            0x200A
+#define WGL_TRANSPARENT_RED_VALUE_ARB  0x2037
+#define WGL_TRANSPARENT_GREEN_VALUE_ARB 0x2038
+#define WGL_TRANSPARENT_BLUE_VALUE_ARB 0x2039
+#define WGL_TRANSPARENT_ALPHA_VALUE_ARB 0x203A
+#define WGL_TRANSPARENT_INDEX_VALUE_ARB 0x203B
+#define WGL_SHARE_DEPTH_ARB            0x200C
+#define WGL_SHARE_STENCIL_ARB          0x200D
+#define WGL_SHARE_ACCUM_ARB            0x200E
+#define WGL_SUPPORT_GDI_ARB            0x200F
+#define WGL_SUPPORT_OPENGL_ARB         0x2010
+#define WGL_DOUBLE_BUFFER_ARB          0x2011
+#define WGL_STEREO_ARB                 0x2012
+#define WGL_PIXEL_TYPE_ARB             0x2013
+#define WGL_COLOR_BITS_ARB             0x2014
+#define WGL_RED_BITS_ARB               0x2015
+#define WGL_RED_SHIFT_ARB              0x2016
+#define WGL_GREEN_BITS_ARB             0x2017
+#define WGL_GREEN_SHIFT_ARB            0x2018
+#define WGL_BLUE_BITS_ARB              0x2019
+#define WGL_BLUE_SHIFT_ARB             0x201A
+#define WGL_ALPHA_BITS_ARB             0x201B
+#define WGL_ALPHA_SHIFT_ARB            0x201C
+#define WGL_ACCUM_BITS_ARB             0x201D
+#define WGL_ACCUM_RED_BITS_ARB         0x201E
+#define WGL_ACCUM_GREEN_BITS_ARB       0x201F
+#define WGL_ACCUM_BLUE_BITS_ARB        0x2020
+#define WGL_ACCUM_ALPHA_BITS_ARB       0x2021
+#define WGL_DEPTH_BITS_ARB             0x2022
+#define WGL_STENCIL_BITS_ARB           0x2023
+#define WGL_AUX_BUFFERS_ARB            0x2024
+#define WGL_NO_ACCELERATION_ARB        0x2025
+#define WGL_GENERIC_ACCELERATION_ARB   0x2026
+#define WGL_FULL_ACCELERATION_ARB      0x2027
+#define WGL_SWAP_EXCHANGE_ARB          0x2028
+#define WGL_SWAP_COPY_ARB              0x2029
+#define WGL_SWAP_UNDEFINED_ARB         0x202A
+#define WGL_TYPE_RGBA_ARB              0x202B
+#define WGL_TYPE_COLORINDEX_ARB        0x202C
+#endif
+
+#ifndef WGL_ARB_render_texture
+#define WGL_BIND_TO_TEXTURE_RGB_ARB        0x2070
+#define WGL_BIND_TO_TEXTURE_RGBA_ARB       0x2071
+#define WGL_TEXTURE_FORMAT_ARB             0x2072
+#define WGL_TEXTURE_TARGET_ARB             0x2073
+#define WGL_MIPMAP_TEXTURE_ARB             0x2074
+#define WGL_TEXTURE_RGB_ARB                0x2075
+#define WGL_TEXTURE_RGBA_ARB               0x2076
+#define WGL_NO_TEXTURE_ARB                 0x2077
+#define WGL_TEXTURE_CUBE_MAP_ARB           0x2078
+#define WGL_TEXTURE_1D_ARB                 0x2079
+#define WGL_TEXTURE_2D_ARB                 0x207A
+#define WGL_MIPMAP_LEVEL_ARB               0x207B
+#define WGL_CUBE_MAP_FACE_ARB              0x207C
+#define WGL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB 0x207D
+#define WGL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB 0x207E
+#define WGL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB 0x207F
+#define WGL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB 0x2080
+#define WGL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB 0x2081
+#define WGL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB 0x2082
+#define WGL_FRONT_LEFT_ARB                 0x2083
+#define WGL_FRONT_RIGHT_ARB                0x2084
+#define WGL_BACK_LEFT_ARB                  0x2085
+#define WGL_BACK_RIGHT_ARB                 0x2086
+#define WGL_AUX0_ARB                       0x2087
+#define WGL_AUX1_ARB                       0x2088
+#define WGL_AUX2_ARB                       0x2089
+#define WGL_AUX3_ARB                       0x208A
+#define WGL_AUX4_ARB                       0x208B
+#define WGL_AUX5_ARB                       0x208C
+#define WGL_AUX6_ARB                       0x208D
+#define WGL_AUX7_ARB                       0x208E
+#define WGL_AUX8_ARB                       0x208F
+#define WGL_AUX9_ARB                       0x2090
+#endif
+
+#ifndef WGL_FLOAT_COMPONENTS_NV
+#define WGL_FLOAT_COMPONENTS_NV        0x20B0
+#endif
+
+#ifndef WGL_ARB_multisample
+#define WGL_SAMPLE_BUFFERS_ARB         0x2041
+#define WGL_SAMPLES_ARB                0x2042
+#endif
+
+#ifndef GL_SAMPLES_ARB
+#define GL_SAMPLES_ARB 0x80A9
+#endif
+
+QGLFormat pfiToQGLFormat(HDC hdc, int pfi);
+
+static void qt_format_to_attrib_list(bool has_render_texture, const QGLFormat &f, int attribs[])
+{
+    int i = 0;
+    attribs[i++] = WGL_SUPPORT_OPENGL_ARB;
+    attribs[i++] = TRUE;
+    attribs[i++] = WGL_DRAW_TO_PBUFFER_ARB;
+    attribs[i++] = TRUE;
+
+    if (has_render_texture) {
+        attribs[i++] = WGL_BIND_TO_TEXTURE_RGBA_ARB;
+        attribs[i++] = TRUE;
+    }
+
+    attribs[i++] = WGL_COLOR_BITS_ARB;
+    attribs[i++] = 32;
+    attribs[i++] = WGL_DOUBLE_BUFFER_ARB;
+    attribs[i++] = FALSE;
+
+    if (f.stereo()) {
+        attribs[i++] = WGL_STEREO_ARB;
+        attribs[i++] = TRUE;
+    }
+    if (f.depth()) {
+        attribs[i++] = WGL_DEPTH_BITS_ARB;
+        attribs[i++] = f.depthBufferSize() == -1 ? 24 : f.depthBufferSize();
+    }
+    if (f.redBufferSize() != -1) {
+        attribs[i++] = WGL_RED_BITS_ARB;
+        attribs[i++] = f.redBufferSize();
+    }
+    if (f.greenBufferSize() != -1) {
+        attribs[i++] = WGL_GREEN_BITS_ARB;
+        attribs[i++] = f.greenBufferSize();
+    }
+    if (f.blueBufferSize() != -1) {
+        attribs[i++] = WGL_BLUE_BITS_ARB;
+        attribs[i++] = f.blueBufferSize();
+    }
+    if (f.alpha()) {
+        attribs[i++] = WGL_ALPHA_BITS_ARB;
+        attribs[i++] = f.alphaBufferSize() == -1 ? 8 : f.alphaBufferSize();
+    }
+    if (f.accum()) {
+        attribs[i++] = WGL_ACCUM_BITS_ARB;
+        attribs[i++] = f.accumBufferSize() == -1 ? 16 : f.accumBufferSize();
+    }
+    if (f.stencil()) {
+        attribs[i++] = WGL_STENCIL_BITS_ARB;
+        attribs[i++] = f.stencilBufferSize() == -1 ? 8 : f.stencilBufferSize();
+    }
+    if ((f.redBufferSize() > 8 || f.greenBufferSize() > 8
+         || f.blueBufferSize() > 8 || f.alphaBufferSize() > 8)
+        && (QGLExtensions::glExtensions() & QGLExtensions::NVFloatBuffer))
+    {
+        attribs[i++] = WGL_FLOAT_COMPONENTS_NV;
+        attribs[i++] = TRUE;
+    }
+    if (f.sampleBuffers()) {
+        attribs[i++] = WGL_SAMPLE_BUFFERS_ARB;
+        attribs[i++] = 1;
+        attribs[i++] = WGL_SAMPLES_ARB;
+        attribs[i++] = f.samples() == -1 ? 16 : f.samples();
+    }
+    attribs[i] = 0;
+}
+
+bool QGLPixelBufferPrivate::init(const QSize &size, const QGLFormat &f, QGLWidget *shareWidget)
+{
+    QGLTemporaryContext tempContext;
+
+    PFNWGLCREATEPBUFFERARBPROC wglCreatePbufferARB =
+        (PFNWGLCREATEPBUFFERARBPROC) wglGetProcAddress("wglCreatePbufferARB");
+    PFNWGLGETPBUFFERDCARBPROC wglGetPbufferDCARB =
+        (PFNWGLGETPBUFFERDCARBPROC) wglGetProcAddress("wglGetPbufferDCARB");
+    PFNWGLQUERYPBUFFERARBPROC wglQueryPbufferARB =
+        (PFNWGLQUERYPBUFFERARBPROC) wglGetProcAddress("wglQueryPbufferARB");
+    PFNWGLCHOOSEPIXELFORMATARBPROC wglChoosePixelFormatARB =
+        (PFNWGLCHOOSEPIXELFORMATARBPROC) wglGetProcAddress("wglChoosePixelFormatARB");
+
+    if (!wglCreatePbufferARB) // assumes that if one can be resolved, all of them can
+        return false;
+
+    dc = wglGetCurrentDC();
+    Q_ASSERT(dc);
+    has_render_texture = false;
+
+    // sample buffers doesn't work in conjunction with the render_texture extension
+    if (!f.sampleBuffers()) {
+        PFNWGLGETEXTENSIONSSTRINGARBPROC wglGetExtensionsStringARB =
+                (PFNWGLGETEXTENSIONSSTRINGARBPROC) wglGetProcAddress("wglGetExtensionsStringARB");
+
+        if (wglGetExtensionsStringARB) {
+            QString extensions(QLatin1String(wglGetExtensionsStringARB(dc)));
+            has_render_texture = extensions.contains(QLatin1String("WGL_ARB_render_texture"));
+        }
+    }
+
+    int attribs[40];
+    qt_format_to_attrib_list(has_render_texture, f, attribs);
+
+    // Find pbuffer capable pixel format.
+    unsigned int num_formats = 0;
+    int pixel_format;
+    wglChoosePixelFormatARB(dc, attribs, 0, 1, &pixel_format, &num_formats);
+
+    // some GL implementations don't support pbuffers with accum
+    // buffers, so try that before we give up
+    if (num_formats == 0 && f.accum()) {
+        QGLFormat tmp = f;
+        tmp.setAccum(false);
+        qt_format_to_attrib_list(has_render_texture, tmp, attribs);
+        wglChoosePixelFormatARB(dc, attribs, 0, 1, &pixel_format, &num_formats);
+    }
+
+    if (num_formats == 0) {
+        qWarning("QGLPixelBuffer: Unable to find a pixel format with pbuffer  - giving up.");
+        return false;
+    }
+    format = pfiToQGLFormat(dc, pixel_format);
+
+    // NB! The below ONLY works if the width/height are powers of 2.
+    // Set some pBuffer attributes so that we can use this pBuffer as
+    // a 2D RGBA texture target.
+    int pb_attribs[] = {WGL_TEXTURE_FORMAT_ARB, WGL_TEXTURE_RGBA_ARB,
+                        WGL_TEXTURE_TARGET_ARB, WGL_TEXTURE_2D_ARB, 0};
+
+    pbuf = wglCreatePbufferARB(dc, pixel_format, size.width(), size.height(),
+                               has_render_texture ? pb_attribs : 0);
+    if (!pbuf) {
+        // try again without the render_texture extension
+        pbuf = wglCreatePbufferARB(dc, pixel_format, size.width(), size.height(), 0);
+        has_render_texture = false;
+        if (!pbuf) {
+            qWarning("QGLPixelBuffer: Unable to create pbuffer [w=%d, h=%d] - giving up.", size.width(), size.height());
+            return false;
+        }
+    }
+
+    dc = wglGetPbufferDCARB(pbuf);
+    ctx = wglCreateContext(dc);
+    if (!dc || !ctx) {
+        qWarning("QGLPixelBuffer: Unable to create pbuffer context - giving up.");
+        return false;
+    }
+
+    // Explicitly disable the render_texture extension if we have a 
+    // multi-sampled pbuffer context. This seems to be a problem only with 
+    // ATI cards if multi-sampling is forced globally in the driver.
+    wglMakeCurrent(dc, ctx);
+    GLint samples = 0;
+    glGetIntegerv(GL_SAMPLES_ARB, &samples);
+    if (has_render_texture && samples != 0)
+        has_render_texture = false;
+
+    HGLRC share_ctx = shareWidget ? shareWidget->d_func()->glcx->d_func()->rc : 0;
+    if (share_ctx && !wglShareLists(share_ctx, ctx))
+        qWarning("QGLPixelBuffer: Unable to share display lists - with share widget.");
+
+    int width, height;
+    wglQueryPbufferARB(pbuf, WGL_PBUFFER_WIDTH_ARB, &width);
+    wglQueryPbufferARB(pbuf, WGL_PBUFFER_HEIGHT_ARB, &height);
+    return true;
+}
+
+bool QGLPixelBufferPrivate::cleanup()
+{
+    PFNWGLRELEASEPBUFFERDCARBPROC wglReleasePbufferDCARB =
+        (PFNWGLRELEASEPBUFFERDCARBPROC) wglGetProcAddress("wglReleasePbufferDCARB");
+    PFNWGLDESTROYPBUFFERARBPROC wglDestroyPbufferARB =
+        (PFNWGLDESTROYPBUFFERARBPROC) wglGetProcAddress("wglDestroyPbufferARB");
+    if (!invalid && wglReleasePbufferDCARB && wglDestroyPbufferARB) {
+        wglReleasePbufferDCARB(pbuf, dc);
+        wglDestroyPbufferARB(pbuf);
+    }
+    return true;
+}
+
+bool QGLPixelBuffer::bindToDynamicTexture(GLuint texture_id)
+{
+    Q_D(QGLPixelBuffer);
+    if (d->invalid || !d->has_render_texture)
+        return false;
+    PFNWGLBINDTEXIMAGEARBPROC wglBindTexImageARB =
+        (PFNWGLBINDTEXIMAGEARBPROC) wglGetProcAddress("wglBindTexImageARB");
+    if (wglBindTexImageARB) {
+        glBindTexture(GL_TEXTURE_2D, texture_id);
+        return wglBindTexImageARB(d->pbuf, WGL_FRONT_LEFT_ARB);
+    }
+    return false;
+}
+
+void QGLPixelBuffer::releaseFromDynamicTexture()
+{
+    Q_D(QGLPixelBuffer);
+    if (d->invalid || !d->has_render_texture)
+        return;
+    PFNWGLRELEASETEXIMAGEARBPROC wglReleaseTexImageARB =
+        (PFNWGLRELEASETEXIMAGEARBPROC) wglGetProcAddress("wglReleaseTexImageARB");
+    if (wglReleaseTexImageARB)
+        wglReleaseTexImageARB(d->pbuf, WGL_FRONT_LEFT_ARB);
+}
+
+bool QGLPixelBuffer::hasOpenGLPbuffers()
+{
+    bool ret = false;
+    QGLTemporaryContext *tmpContext = 0;
+    if (!QGLContext::currentContext())
+        tmpContext = new QGLTemporaryContext;
+    PFNWGLGETEXTENSIONSSTRINGARBPROC wglGetExtensionsStringARB =
+        (PFNWGLGETEXTENSIONSSTRINGARBPROC) wglGetProcAddress("wglGetExtensionsStringARB");
+    if (wglGetExtensionsStringARB) {
+        QString extensions(QLatin1String(wglGetExtensionsStringARB(wglGetCurrentDC())));
+        if (extensions.contains(QLatin1String("WGL_ARB_pbuffer"))
+            && extensions.contains(QLatin1String("WGL_ARB_pixel_format"))) {
+            ret = true;
+        }
+    }
+    if (tmpContext)
+        delete tmpContext;
+    return ret;
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/qglpixelbuffer_x11.cpp b/src/opengl/qglpixelbuffer_x11.cpp
new file mode 100644
index 0000000000..e76d79233a
--- /dev/null
+++ b/src/opengl/qglpixelbuffer_x11.cpp
@@ -0,0 +1,290 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#include <qlibrary.h>
+#include <qdebug.h>
+#include <private/qgl_p.h>
+#include <private/qt_x11_p.h>
+#include <private/qpaintengine_opengl_p.h>
+
+#include <qx11info_x11.h>
+#include <GL/glx.h>
+#include <qimage.h>
+
+#include "qglpixelbuffer.h"
+#include "qglpixelbuffer_p.h"
+
+#if defined(Q_OS_LINUX) || defined(Q_OS_BSD4)
+#include <dlfcn.h>
+#endif
+
+QT_BEGIN_NAMESPACE
+
+#ifndef GLX_VERSION_1_3
+#define GLX_RGBA_BIT            0x00000002
+#define GLX_PBUFFER_BIT         0x00000004
+#define GLX_DRAWABLE_TYPE       0x8010
+#define GLX_RENDER_TYPE         0x8011
+#define GLX_RGBA_TYPE           0x8014
+#define GLX_PBUFFER_HEIGHT      0x8040
+#define GLX_PBUFFER_WIDTH       0x8041
+#endif
+
+#ifndef GLX_ARB_multisample
+#define GLX_SAMPLE_BUFFERS_ARB  100000
+#define GLX_SAMPLES_ARB         100001
+#endif
+
+typedef GLXFBConfig* (*_glXChooseFBConfig) (Display *dpy, int screen, const int *attrib_list, int *nelements);
+typedef int (*_glXGetFBConfigAttrib) (Display *dpy, GLXFBConfig config, int attribute, int *value);
+typedef GLXPbuffer (*_glXCreatePbuffer) (Display *dpy, GLXFBConfig config, const int *attrib_list);
+typedef void (*_glXDestroyPbuffer) (Display *dpy, GLXPbuffer pbuf);
+typedef GLXContext (*_glXCreateNewContext) (Display *dpy, GLXFBConfig config, int render_type, GLXContext share_list, Bool direct);
+typedef Bool (*_glXMakeContextCurrent) (Display *dpy, GLXDrawable draw, GLXDrawable read, GLXContext ctx);
+
+static _glXChooseFBConfig qt_glXChooseFBConfig = 0;
+static _glXCreateNewContext qt_glXCreateNewContext = 0;
+static _glXCreatePbuffer qt_glXCreatePbuffer = 0;
+static _glXDestroyPbuffer qt_glXDestroyPbuffer = 0;
+static _glXGetFBConfigAttrib qt_glXGetFBConfigAttrib = 0;
+static _glXMakeContextCurrent qt_glXMakeContextCurrent = 0;
+
+#define glXChooseFBConfig qt_glXChooseFBConfig
+#define glXCreateNewContext qt_glXCreateNewContext
+#define glXCreatePbuffer qt_glXCreatePbuffer
+#define glXDestroyPbuffer qt_glXDestroyPbuffer
+#define glXGetFBConfigAttrib qt_glXGetFBConfigAttrib
+#define glXMakeContextCurrent qt_glXMakeContextCurrent
+
+extern void* qglx_getProcAddress(const char* procName); // in qgl_x11.cpp
+
+static bool qt_resolve_pbuffer_extensions()
+{
+    static int resolved = false;
+    if (resolved && qt_glXMakeContextCurrent)
+        return true;
+    else if (resolved)
+        return false;
+
+    qt_glXChooseFBConfig = (_glXChooseFBConfig) qglx_getProcAddress("glXChooseFBConfig");
+    qt_glXCreateNewContext = (_glXCreateNewContext) qglx_getProcAddress("glXCreateNewContext");
+    qt_glXCreatePbuffer = (_glXCreatePbuffer) qglx_getProcAddress("glXCreatePbuffer");
+    qt_glXDestroyPbuffer = (_glXDestroyPbuffer) qglx_getProcAddress("glXDestroyPbuffer");
+    qt_glXGetFBConfigAttrib = (_glXGetFBConfigAttrib) qglx_getProcAddress("glXGetFBConfigAttrib");
+    qt_glXMakeContextCurrent = (_glXMakeContextCurrent) qglx_getProcAddress("glXMakeContextCurrent");
+
+    resolved = qt_glXMakeContextCurrent ? true : false;
+    return resolved;
+}
+
+static void qt_format_to_attrib_list(const QGLFormat &f, int attribs[])
+{
+    int i = 0;
+    attribs[i++] = GLX_RENDER_TYPE;
+    attribs[i++] = GLX_RGBA_BIT;
+    attribs[i++] = GLX_DRAWABLE_TYPE;
+    attribs[i++] = GLX_PBUFFER_BIT;
+    attribs[i++] = GLX_RED_SIZE;
+    attribs[i++] = f.redBufferSize() == -1 ? 1 : f.redBufferSize();
+    attribs[i++] = GLX_GREEN_SIZE;
+    attribs[i++] = f.greenBufferSize() == -1 ? 1 : f.greenBufferSize();
+    attribs[i++] = GLX_BLUE_SIZE;
+    attribs[i++] = f.blueBufferSize() == -1 ? 1 : f.blueBufferSize();
+    if (f.doubleBuffer()) {
+        attribs[i++] = GLX_DOUBLEBUFFER;
+        attribs[i++] = true;
+    }
+    if (f.depth()) {
+        attribs[i++] = GLX_DEPTH_SIZE;
+        attribs[i++] = f.depthBufferSize() == -1 ? 1 : f.depthBufferSize();
+    }
+    if (f.stereo()) {
+        attribs[i++] = GLX_STEREO;
+        attribs[i++] = true;
+    }
+    if (f.stencil()) {
+        attribs[i++] = GLX_STENCIL_SIZE;
+        attribs[i++] = f.stencilBufferSize() == -1 ? 1 : f.stencilBufferSize();
+    }
+    if (f.alpha()) {
+        attribs[i++] = GLX_ALPHA_SIZE;
+        attribs[i++] = f.alphaBufferSize() == -1 ? 1 : f.alphaBufferSize();
+    }
+    if (f.accum()) {
+        attribs[i++] = GLX_ACCUM_RED_SIZE;
+        attribs[i++] = f.accumBufferSize() == -1 ? 1 : f.accumBufferSize();
+        attribs[i++] = GLX_ACCUM_GREEN_SIZE;
+        attribs[i++] = f.accumBufferSize() == -1 ? 1 : f.accumBufferSize();
+        attribs[i++] = GLX_ACCUM_BLUE_SIZE;
+        attribs[i++] = f.accumBufferSize() == -1 ? 1 : f.accumBufferSize();
+        if (f.alpha()) {
+            attribs[i++] = GLX_ACCUM_ALPHA_SIZE;
+            attribs[i++] = f.accumBufferSize() == -1 ? 1 : f.accumBufferSize();
+        }
+    }
+    if (f.sampleBuffers()) {
+        attribs[i++] = GLX_SAMPLE_BUFFERS_ARB;
+        attribs[i++] = 1;
+        attribs[i++] = GLX_SAMPLES_ARB;
+        attribs[i++] = f.samples() == -1 ? 4 : f.samples();
+    }
+
+    attribs[i] = XNone;
+}
+
+bool QGLPixelBufferPrivate::init(const QSize &size, const QGLFormat &f, QGLWidget *shareWidget)
+{
+    if (!qt_resolve_pbuffer_extensions()) {
+        qWarning("QGLPixelBuffer: pbuffers are not supported on this system.");
+        return false;
+    }
+
+    int attribs[40];
+    int num_configs = 0;
+
+    qt_format_to_attrib_list(f, attribs);
+
+    int screen = X11->defaultScreen;
+    if (shareWidget)
+        screen = shareWidget->x11Info().screen();
+
+    GLXFBConfig *configs = glXChooseFBConfig(X11->display, screen, attribs, &num_configs);
+    if (configs && num_configs) {
+        int res;
+        glXGetFBConfigAttrib(X11->display, configs[0], GLX_LEVEL, &res);
+        format.setPlane(res);
+        glXGetFBConfigAttrib(X11->display, configs[0], GLX_DOUBLEBUFFER, &res);
+        format.setDoubleBuffer(res);
+        glXGetFBConfigAttrib(X11->display, configs[0], GLX_DEPTH_SIZE, &res);
+        format.setDepth(res);
+        if (format.depth())
+            format.setDepthBufferSize(res);
+        glXGetFBConfigAttrib(X11->display, configs[0], GLX_RGBA, &res);
+        format.setRgba(res);
+        glXGetFBConfigAttrib(X11->display, configs[0], GLX_RED_SIZE, &res);
+        format.setRedBufferSize(res);
+        glXGetFBConfigAttrib(X11->display, configs[0], GLX_GREEN_SIZE, &res);
+        format.setGreenBufferSize(res);
+        glXGetFBConfigAttrib(X11->display, configs[0], GLX_BLUE_SIZE, &res);
+        format.setBlueBufferSize(res);
+        glXGetFBConfigAttrib(X11->display, configs[0], GLX_ALPHA_SIZE, &res);
+        format.setAlpha(res);
+        if (format.alpha())
+            format.setAlphaBufferSize(res);
+        glXGetFBConfigAttrib(X11->display, configs[0], GLX_ACCUM_RED_SIZE, &res);
+        format.setAccum(res);
+        if (format.accum())
+            format.setAccumBufferSize(res);
+        glXGetFBConfigAttrib(X11->display, configs[0], GLX_STENCIL_SIZE, &res);
+        format.setStencil(res);
+        if (format.stencil())
+            format.setStencilBufferSize(res);
+        glXGetFBConfigAttrib(X11->display, configs[0], GLX_STEREO, &res);
+        format.setStereo(res);
+        glXGetFBConfigAttrib(X11->display, configs[0], GLX_SAMPLE_BUFFERS_ARB, &res);
+        format.setSampleBuffers(res);
+        if (format.sampleBuffers()) {
+            glXGetFBConfigAttrib(X11->display, configs[0], GLX_SAMPLES_ARB, &res);
+            format.setSamples(res);
+        }
+
+        int pb_attribs[] = {GLX_PBUFFER_WIDTH, size.width(), GLX_PBUFFER_HEIGHT, size.height(), XNone};
+        GLXContext shareContext = 0;
+        if (shareWidget && shareWidget->d_func()->glcx)
+            shareContext = (GLXContext) shareWidget->d_func()->glcx->d_func()->cx;
+
+        pbuf = glXCreatePbuffer(QX11Info::display(), configs[0], pb_attribs);
+        ctx = glXCreateNewContext(QX11Info::display(), configs[0], GLX_RGBA_TYPE, shareContext, true);
+
+        XFree(configs);
+        if (!pbuf || !ctx) {
+            qWarning("QGLPixelBuffer: Unable to create a pbuffer/context - giving up.");
+            return false;
+        }
+        return true;
+    } else {
+        qWarning("QGLPixelBuffer: Unable to find a context/format match - giving up.");
+        return false;
+    }
+}
+
+bool QGLPixelBufferPrivate::cleanup()
+{
+    glXDestroyPbuffer(QX11Info::display(), pbuf);
+    return true;
+}
+
+bool QGLPixelBuffer::bindToDynamicTexture(GLuint)
+{
+    return false;
+}
+
+void QGLPixelBuffer::releaseFromDynamicTexture()
+{
+}
+
+bool QGLPixelBuffer::hasOpenGLPbuffers()
+{
+    bool ret = qt_resolve_pbuffer_extensions();
+
+    if (!ret)
+	return false;
+
+    int attribs[40];
+    int num_configs = 0;
+
+    qt_format_to_attrib_list(QGLFormat::defaultFormat(), attribs);
+
+    GLXFBConfig *configs = glXChooseFBConfig(X11->display, X11->defaultScreen, attribs, &num_configs);
+    GLXPbuffer pbuf = 0;
+    GLXContext ctx = 0;
+
+    if (configs && num_configs) {
+        int pb_attribs[] = {GLX_PBUFFER_WIDTH, 128, GLX_PBUFFER_HEIGHT, 128, XNone};
+        pbuf = glXCreatePbuffer(X11->display, configs[0], pb_attribs);
+        ctx = glXCreateNewContext(X11->display, configs[0], GLX_RGBA_TYPE, 0, true);
+        XFree(configs);
+	glXDestroyContext(X11->display, ctx);
+	glXDestroyPbuffer(X11->display, pbuf);
+    }
+    return pbuf && ctx;
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/qglpixmapfilter.cpp b/src/opengl/qglpixmapfilter.cpp
new file mode 100644
index 0000000000..aa075617bb
--- /dev/null
+++ b/src/opengl/qglpixmapfilter.cpp
@@ -0,0 +1,621 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "private/qpixmapfilter_p.h"
+#include "private/qpixmapdata_gl_p.h"
+#include "private/qpaintengineex_opengl2_p.h"
+#include "private/qglengineshadermanager_p.h"
+#include "private/qpixmapdata_p.h"
+#include "private/qimagepixmapcleanuphooks_p.h"
+#include "qglpixmapfilter_p.h"
+#include "qgraphicssystem_gl_p.h"
+#include "qpaintengine_opengl_p.h"
+#include "qcache.h"
+
+#include "qglframebufferobject.h"
+#include "qglshaderprogram.h"
+#include "qgl_p.h"
+
+#include "private/qapplication_p.h"
+#include "private/qdrawhelper_p.h"
+#include "private/qmemrotate_p.h"
+#include "private/qmath_p.h"
+#include "qmath.h"
+
+QT_BEGIN_NAMESPACE
+
+// qpixmapfilter.cpp
+Q_GUI_EXPORT void qt_blurImage(QImage &blurImage, qreal radius, bool quality, int transposed = 0);
+Q_GUI_EXPORT QImage qt_halfScaled(const QImage &source);
+
+void QGLPixmapFilterBase::bindTexture(const QPixmap &src) const
+{
+    const_cast<QGLContext *>(QGLContext::currentContext())->d_func()->bindTexture(src, GL_TEXTURE_2D, GL_RGBA, QGLContext::BindOptions(QGLContext::DefaultBindOption | QGLContext::MemoryManagedBindOption));
+}
+
+void QGLPixmapFilterBase::drawImpl(QPainter *painter, const QPointF &pos, const QPixmap &src, const QRectF& source) const
+{
+    processGL(painter, pos, src, source);
+}
+
+class QGLPixmapColorizeFilter: public QGLCustomShaderStage, public QGLPixmapFilter<QPixmapColorizeFilter>
+{
+public:
+    QGLPixmapColorizeFilter();
+
+    void setUniforms(QGLShaderProgram *program);
+
+protected:
+    bool processGL(QPainter *painter, const QPointF &pos, const QPixmap &pixmap, const QRectF &srcRect) const;
+};
+
+class QGLPixmapConvolutionFilter: public QGLCustomShaderStage, public QGLPixmapFilter<QPixmapConvolutionFilter>
+{
+public:
+    QGLPixmapConvolutionFilter();
+    ~QGLPixmapConvolutionFilter();
+
+    void setUniforms(QGLShaderProgram *program);
+
+protected:
+    bool processGL(QPainter *painter, const QPointF &pos, const QPixmap &src, const QRectF &srcRect) const;
+
+private:
+    QByteArray generateConvolutionShader() const;
+
+    mutable QSize m_srcSize;
+    mutable int m_prevKernelSize;
+};
+
+class QGLPixmapBlurFilter : public QGLCustomShaderStage, public QGLPixmapFilter<QPixmapBlurFilter>
+{
+public:
+    QGLPixmapBlurFilter();
+
+protected:
+    bool processGL(QPainter *painter, const QPointF &pos, const QPixmap &src, const QRectF &srcRect) const;
+};
+
+class QGLPixmapDropShadowFilter : public QGLCustomShaderStage, public QGLPixmapFilter<QPixmapDropShadowFilter>
+{
+public:
+    QGLPixmapDropShadowFilter();
+
+    void setUniforms(QGLShaderProgram *program);
+
+protected:
+    bool processGL(QPainter *painter, const QPointF &pos, const QPixmap &src, const QRectF &srcRect) const;
+};
+
+extern const QGLContext *qt_gl_share_context();
+
+QPixmapFilter *QGL2PaintEngineEx::pixmapFilter(int type, const QPixmapFilter *prototype)
+{
+    Q_D(QGL2PaintEngineEx);
+    switch (type) {
+    case QPixmapFilter::ColorizeFilter:
+        if (!d->colorizeFilter)
+            d->colorizeFilter.reset(new QGLPixmapColorizeFilter);
+        return d->colorizeFilter.data();
+
+    case QPixmapFilter::BlurFilter: {
+        if (!d->blurFilter)
+            d->blurFilter.reset(new QGLPixmapBlurFilter());
+        return d->blurFilter.data();
+        }
+
+    case QPixmapFilter::DropShadowFilter: {
+        if (!d->dropShadowFilter)
+            d->dropShadowFilter.reset(new QGLPixmapDropShadowFilter());
+        return d->dropShadowFilter.data();
+        }
+
+    case QPixmapFilter::ConvolutionFilter:
+        if (!d->convolutionFilter)
+            d->convolutionFilter.reset(new QGLPixmapConvolutionFilter);
+        return d->convolutionFilter.data();
+
+    default: break;
+    }
+    return QPaintEngineEx::pixmapFilter(type, prototype);
+}
+
+static const char *qt_gl_colorize_filter =
+        "uniform lowp vec4 colorizeColor;"
+        "uniform lowp float colorizeStrength;"
+        "lowp vec4 customShader(lowp sampler2D src, highp vec2 srcCoords)"
+        "{"
+        "        lowp vec4 srcPixel = texture2D(src, srcCoords);"
+        "        lowp float gray = dot(srcPixel.rgb, vec3(0.212671, 0.715160, 0.072169));"
+        "        lowp vec3 colorized = 1.0-((1.0-gray)*(1.0-colorizeColor.rgb));"
+        "        return vec4(mix(srcPixel.rgb, colorized * srcPixel.a, colorizeStrength), srcPixel.a);"
+        "}";
+
+QGLPixmapColorizeFilter::QGLPixmapColorizeFilter()
+{
+    setSource(qt_gl_colorize_filter);
+}
+
+bool QGLPixmapColorizeFilter::processGL(QPainter *painter, const QPointF &pos, const QPixmap &src, const QRectF &) const
+{
+    QGLPixmapColorizeFilter *filter = const_cast<QGLPixmapColorizeFilter *>(this);
+
+    filter->setOnPainter(painter);
+    painter->drawPixmap(pos, src);
+    filter->removeFromPainter(painter);
+
+    return true;
+}
+
+void QGLPixmapColorizeFilter::setUniforms(QGLShaderProgram *program)
+{
+    program->setUniformValue("colorizeColor", color());
+    program->setUniformValue("colorizeStrength", float(strength()));
+}
+
+void QGLPixmapConvolutionFilter::setUniforms(QGLShaderProgram *program)
+{
+    const qreal *kernel = convolutionKernel();
+    int kernelWidth = columns();
+    int kernelHeight = rows();
+    int kernelSize = kernelWidth * kernelHeight;
+
+    QVarLengthArray<GLfloat> matrix(kernelSize);
+    QVarLengthArray<GLfloat> offset(kernelSize * 2);
+
+    for(int i = 0; i < kernelSize; ++i)
+        matrix[i] = kernel[i];
+
+    for(int y = 0; y < kernelHeight; ++y) {
+        for(int x = 0; x < kernelWidth; ++x) {
+            offset[(y * kernelWidth + x) * 2] = x - (kernelWidth / 2);
+            offset[(y * kernelWidth + x) * 2 + 1] = (kernelHeight / 2) - y;
+        }
+    }
+
+    const qreal iw = 1.0 / m_srcSize.width();
+    const qreal ih = 1.0 / m_srcSize.height();
+    program->setUniformValue("inv_texture_size", iw, ih);
+    program->setUniformValueArray("matrix", matrix.constData(), kernelSize, 1);
+    program->setUniformValueArray("offset", offset.constData(), kernelSize, 2);
+}
+
+// generates convolution filter code for arbitrary sized kernel
+QByteArray QGLPixmapConvolutionFilter::generateConvolutionShader() const {
+    QByteArray code;
+    int kernelWidth = columns();
+    int kernelHeight = rows();
+    int kernelSize = kernelWidth * kernelHeight;
+    code.append("uniform highp vec2 inv_texture_size;\n"
+                "uniform mediump float matrix[");
+    code.append(QByteArray::number(kernelSize));
+    code.append("];\n"
+                "uniform highp vec2 offset[");
+    code.append(QByteArray::number(kernelSize));
+    code.append("];\n");
+    code.append("lowp vec4 customShader(lowp sampler2D src, highp vec2 srcCoords) {\n");
+
+    code.append("  int i = 0;\n"
+                "  lowp vec4 sum = vec4(0.0);\n"
+                "  for (i = 0; i < ");
+    code.append(QByteArray::number(kernelSize));
+    code.append("; i++) {\n"
+                "    sum += matrix[i] * texture2D(src,srcCoords+inv_texture_size*offset[i]);\n"
+                "  }\n"
+                "  return sum;\n"
+                "}");
+    return code;
+}
+
+QGLPixmapConvolutionFilter::QGLPixmapConvolutionFilter()
+    : m_prevKernelSize(-1)
+{
+}
+
+QGLPixmapConvolutionFilter::~QGLPixmapConvolutionFilter()
+{
+}
+
+bool QGLPixmapConvolutionFilter::processGL(QPainter *painter, const QPointF &pos, const QPixmap &src, const QRectF &srcRect) const
+{
+    QGLPixmapConvolutionFilter *filter = const_cast<QGLPixmapConvolutionFilter *>(this);
+
+    m_srcSize = src.size();
+
+    int kernelSize = rows() * columns();
+    if (m_prevKernelSize == -1 || m_prevKernelSize != kernelSize) {
+        filter->setSource(generateConvolutionShader());
+        m_prevKernelSize = kernelSize;
+    }
+
+    filter->setOnPainter(painter);
+    painter->drawPixmap(pos, src, srcRect);
+    filter->removeFromPainter(painter);
+
+    return true;
+}
+
+QGLPixmapBlurFilter::QGLPixmapBlurFilter()
+{
+}
+
+class QGLBlurTextureInfo
+{
+public:
+    QGLBlurTextureInfo(const QImage &image, GLuint tex, qreal r)
+        : m_texture(tex)
+        , m_radius(r)
+    {
+        m_paddedImage << image;
+    }
+
+    ~QGLBlurTextureInfo()
+    {
+        glDeleteTextures(1, &m_texture);
+    }
+
+    QImage paddedImage(int scaleLevel = 0) const;
+    GLuint texture() const { return m_texture; }
+    qreal radius() const { return m_radius; }
+
+private:
+    mutable QList<QImage> m_paddedImage;
+    GLuint m_texture;
+    qreal m_radius;
+};
+
+QImage QGLBlurTextureInfo::paddedImage(int scaleLevel) const
+{
+    for (int i = m_paddedImage.size() - 1; i <= scaleLevel; ++i)
+        m_paddedImage << qt_halfScaled(m_paddedImage.at(i));
+
+    return m_paddedImage.at(scaleLevel);
+}
+
+class QGLBlurTextureCache : public QObject
+{
+public:
+    static QGLBlurTextureCache *cacheForContext(const QGLContext *context);
+
+    QGLBlurTextureCache(const QGLContext *);
+    ~QGLBlurTextureCache();
+
+    QGLBlurTextureInfo *takeBlurTextureInfo(const QPixmap &pixmap);
+    bool hasBlurTextureInfo(quint64 cacheKey) const;
+    void insertBlurTextureInfo(const QPixmap &pixmap, QGLBlurTextureInfo *info);
+    void clearBlurTextureInfo(quint64 cacheKey);
+
+    void timerEvent(QTimerEvent *event);
+
+private:
+    static void pixmapDestroyed(QPixmapData *pixmap);
+
+    QCache<quint64, QGLBlurTextureInfo > cache;
+
+    static QList<QGLBlurTextureCache *> blurTextureCaches;
+
+    int timerId;
+};
+
+QList<QGLBlurTextureCache *> QGLBlurTextureCache::blurTextureCaches;
+Q_GLOBAL_STATIC(QGLContextGroupResource<QGLBlurTextureCache>, qt_blur_texture_caches)
+
+QGLBlurTextureCache::QGLBlurTextureCache(const QGLContext *)
+    : timerId(0)
+{
+    cache.setMaxCost(4 * 1024 * 1024);
+    blurTextureCaches.append(this);
+}
+
+QGLBlurTextureCache::~QGLBlurTextureCache()
+{
+    blurTextureCaches.removeAt(blurTextureCaches.indexOf(this));
+}
+
+void QGLBlurTextureCache::timerEvent(QTimerEvent *)
+{
+    killTimer(timerId);
+    timerId = 0;
+
+    cache.clear();
+}
+
+QGLBlurTextureCache *QGLBlurTextureCache::cacheForContext(const QGLContext *context)
+{
+    return qt_blur_texture_caches()->value(context);
+}
+
+QGLBlurTextureInfo *QGLBlurTextureCache::takeBlurTextureInfo(const QPixmap &pixmap)
+{
+    return cache.take(pixmap.cacheKey());
+}
+
+void QGLBlurTextureCache::clearBlurTextureInfo(quint64 cacheKey)
+{
+    cache.remove(cacheKey);
+}
+
+bool QGLBlurTextureCache::hasBlurTextureInfo(quint64 cacheKey) const
+{
+    return cache.contains(cacheKey);
+}
+
+void QGLBlurTextureCache::insertBlurTextureInfo(const QPixmap &pixmap, QGLBlurTextureInfo *info)
+{
+    static bool hookAdded = false;
+    if (!hookAdded) {
+        QImagePixmapCleanupHooks::instance()->addPixmapDataDestructionHook(pixmapDestroyed);
+        QImagePixmapCleanupHooks::instance()->addPixmapDataModificationHook(pixmapDestroyed);
+        hookAdded = true;
+    }
+
+    QImagePixmapCleanupHooks::enableCleanupHooks(pixmap);
+    cache.insert(pixmap.cacheKey(), info, pixmap.width() * pixmap.height());
+
+    if (timerId)
+        killTimer(timerId);
+
+    timerId = startTimer(8000);
+}
+
+void QGLBlurTextureCache::pixmapDestroyed(QPixmapData *pmd)
+{
+    foreach (QGLBlurTextureCache *cache, blurTextureCaches) {
+        if (cache->hasBlurTextureInfo(pmd->cacheKey()))
+            cache->clearBlurTextureInfo(pmd->cacheKey());
+    }
+}
+
+static const int qAnimatedBlurLevelIncrement = 16;
+static const int qMaxBlurHalfScaleLevel = 1;
+
+static GLuint generateBlurTexture(const QSize &size, GLenum format = GL_RGBA)
+{
+    GLuint texture;
+    glGenTextures(1, &texture);
+    glBindTexture(GL_TEXTURE_2D, texture);
+    glTexImage2D(GL_TEXTURE_2D, 0, format, size.width(), size.height(), 0, format,
+                 GL_UNSIGNED_BYTE, 0);
+    return texture;
+}
+
+static inline uint nextMultiple(uint x, uint multiplier)
+{
+    uint mod = x % multiplier;
+    if (mod == 0)
+        return x;
+    return x + multiplier - mod;
+}
+
+Q_GUI_EXPORT void qt_memrotate90_gl(const quint32 *src, int srcWidth, int srcHeight, int srcStride,
+                       quint32 *dest, int dstStride);
+
+bool QGLPixmapBlurFilter::processGL(QPainter *painter, const QPointF &pos, const QPixmap &src, const QRectF &) const
+{
+    if (radius() < 1) {
+        painter->drawPixmap(pos, src);
+        return true;
+    }
+
+    qreal actualRadius = radius();
+
+    QGLContext *ctx = const_cast<QGLContext *>(QGLContext::currentContext());
+
+    QGLBlurTextureCache *blurTextureCache = QGLBlurTextureCache::cacheForContext(ctx);
+    QGLBlurTextureInfo *info = 0;
+    int padding = nextMultiple(qCeil(actualRadius), qAnimatedBlurLevelIncrement);
+    QRect targetRect = src.rect().adjusted(-padding, -padding, padding, padding);
+
+    // pad so that we'll be able to half-scale qMaxBlurHalfScaleLevel times
+    targetRect.setWidth((targetRect.width() + (qMaxBlurHalfScaleLevel-1)) & ~(qMaxBlurHalfScaleLevel-1));
+    targetRect.setHeight((targetRect.height() + (qMaxBlurHalfScaleLevel-1)) & ~(qMaxBlurHalfScaleLevel-1));
+
+    QSize textureSize;
+
+    info = blurTextureCache->takeBlurTextureInfo(src);
+    if (!info || info->radius() < actualRadius) {
+        QSize paddedSize = targetRect.size() / 2;
+
+        QImage padded(paddedSize.height(), paddedSize.width(), QImage::Format_ARGB32_Premultiplied);
+        padded.fill(0);
+
+        if (info) {
+            int oldPadding = qRound(info->radius());
+
+            QPainter p(&padded);
+            p.setCompositionMode(QPainter::CompositionMode_Source);
+            p.drawImage((padding - oldPadding) / 2, (padding - oldPadding) / 2, info->paddedImage());
+            p.end();
+        } else {
+            // TODO: combine byteswapping and memrotating into one by declaring
+            // custom GL_RGBA pixel type and qt_colorConvert template for it
+            QImage prepadded = qt_halfScaled(src.toImage()).convertToFormat(QImage::Format_ARGB32_Premultiplied);
+
+            // byte-swap and memrotates in one go
+            qt_memrotate90_gl(reinterpret_cast<const quint32*>(prepadded.bits()),
+                              prepadded.width(), prepadded.height(), prepadded.bytesPerLine(),
+                              reinterpret_cast<quint32*>(padded.scanLine(padding / 2)) + padding / 2,
+                              padded.bytesPerLine());
+        }
+
+        delete info;
+        info = new QGLBlurTextureInfo(padded, generateBlurTexture(paddedSize), padding);
+
+        textureSize = paddedSize;
+    } else {
+        textureSize = QSize(info->paddedImage().height(), info->paddedImage().width());
+    }
+
+    actualRadius *= qreal(0.5);
+    int level = 1;
+    for (; level < qMaxBlurHalfScaleLevel; ++level) {
+        if (actualRadius <= 16)
+            break;
+        actualRadius *= qreal(0.5);
+    }
+
+    const int s = (1 << level);
+
+    int prepadding = qRound(info->radius());
+    padding = qMin(prepadding, qCeil(actualRadius) << level);
+    targetRect = src.rect().adjusted(-padding, -padding, padding, padding);
+
+    targetRect.setWidth(targetRect.width() & ~(s-1));
+    targetRect.setHeight(targetRect.height() & ~(s-1));
+
+    int paddingDelta = (prepadding - padding) >> level;
+
+    QRect subRect(paddingDelta, paddingDelta, targetRect.width() >> level, targetRect.height() >> level);
+    QImage sourceImage = info->paddedImage(level-1);
+
+    QImage subImage(subRect.height(), subRect.width(), QImage::Format_ARGB32_Premultiplied);
+    qt_rectcopy((QRgb *)subImage.bits(), ((QRgb *)sourceImage.scanLine(paddingDelta)) + paddingDelta,
+                0, 0, subRect.height(), subRect.width(), subImage.bytesPerLine(), sourceImage.bytesPerLine());
+
+    GLuint texture = info->texture();
+
+    qt_blurImage(subImage, actualRadius, blurHints() & QGraphicsBlurEffect::QualityHint, 1);
+
+    // subtract one pixel off the end to prevent the bilinear sampling from sampling uninitialized data
+    QRect textureSubRect = subImage.rect().adjusted(0, 0, -1, -1);
+    QRectF targetRectF = QRectF(targetRect).adjusted(0, 0, -targetRect.width() / qreal(textureSize.width()), -targetRect.height() / qreal(textureSize.height()));
+
+    glBindTexture(GL_TEXTURE_2D, texture);
+    glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, subImage.width(), subImage.height(), GL_RGBA,
+            GL_UNSIGNED_BYTE, const_cast<const QImage &>(subImage).bits());
+
+    QGL2PaintEngineEx *engine = static_cast<QGL2PaintEngineEx *>(painter->paintEngine());
+    painter->setRenderHint(QPainter::SmoothPixmapTransform);
+
+    // texture is flipped on the y-axis
+    targetRectF = QRectF(targetRectF.x(), targetRectF.bottom(), targetRectF.width(), -targetRectF.height());
+    engine->drawTexture(targetRectF.translated(pos), texture, textureSize, textureSubRect);
+
+    blurTextureCache->insertBlurTextureInfo(src, info);
+
+    return true;
+}
+
+static const char *qt_gl_drop_shadow_filter =
+        "uniform lowp vec4 shadowColor;"
+        "lowp vec4 customShader(lowp sampler2D src, highp vec2 srcCoords)"
+        "{"
+        "    return shadowColor * texture2D(src, srcCoords.yx).a;"
+        "}";
+
+
+QGLPixmapDropShadowFilter::QGLPixmapDropShadowFilter()
+{
+    setSource(qt_gl_drop_shadow_filter);
+}
+
+bool QGLPixmapDropShadowFilter::processGL(QPainter *painter, const QPointF &pos, const QPixmap &src, const QRectF &srcRect) const
+{
+    QGLPixmapDropShadowFilter *filter = const_cast<QGLPixmapDropShadowFilter *>(this);
+
+    qreal r = blurRadius();
+    QRectF targetRectUnaligned = QRectF(src.rect()).translated(pos + offset()).adjusted(-r, -r, r, r);
+    QRect targetRect = targetRectUnaligned.toAlignedRect();
+
+    // ensure even dimensions (going to divide by two)
+    targetRect.setWidth((targetRect.width() + 1) & ~1);
+    targetRect.setHeight((targetRect.height() + 1) & ~1);
+
+    QGLContext *ctx = const_cast<QGLContext *>(QGLContext::currentContext());
+    QGLBlurTextureCache *blurTextureCache = QGLBlurTextureCache::cacheForContext(ctx);
+
+    QGLBlurTextureInfo *info = blurTextureCache->takeBlurTextureInfo(src);
+    if (!info || info->radius() != r) {
+        QImage half = qt_halfScaled(src.toImage().alphaChannel());
+
+        qreal rx = r + targetRect.left() - targetRectUnaligned.left();
+        qreal ry = r + targetRect.top() - targetRectUnaligned.top();
+
+        QImage image = QImage(targetRect.size() / 2, QImage::Format_Indexed8);
+        image.setColorTable(half.colorTable());
+        image.fill(0);
+        int dx = qRound(rx * qreal(0.5));
+        int dy = qRound(ry * qreal(0.5));
+        qt_rectcopy(image.bits(), half.bits(), dx, dy,
+                    half.width(), half.height(),
+                    image.bytesPerLine(), half.bytesPerLine());
+
+        qt_blurImage(image, r * qreal(0.5), false, 1);
+
+        GLuint texture;
+        glGenTextures(1, &texture);
+        glBindTexture(GL_TEXTURE_2D, texture);
+        glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, image.width(), image.height(),
+                     0, GL_ALPHA, GL_UNSIGNED_BYTE, image.bits());
+
+        info = new QGLBlurTextureInfo(image, texture, r);
+    }
+
+    GLuint texture = info->texture();
+
+    filter->setOnPainter(painter);
+
+    QGL2PaintEngineEx *engine = static_cast<QGL2PaintEngineEx *>(painter->paintEngine());
+    painter->setRenderHint(QPainter::SmoothPixmapTransform);
+
+    engine->drawTexture(targetRect, texture, info->paddedImage().size(), info->paddedImage().rect());
+
+    filter->removeFromPainter(painter);
+
+    // Now draw the actual pixmap over the top.
+    painter->drawPixmap(pos, src, srcRect);
+
+    blurTextureCache->insertBlurTextureInfo(src, info);
+
+    return true;
+}
+
+void QGLPixmapDropShadowFilter::setUniforms(QGLShaderProgram *program)
+{
+    QColor col = color();
+    qreal alpha = col.alphaF();
+    program->setUniformValue("shadowColor", col.redF() * alpha,
+                                            col.greenF() * alpha,
+                                            col.blueF() * alpha,
+                                            alpha);
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/qglpixmapfilter_p.h b/src/opengl/qglpixmapfilter_p.h
new file mode 100644
index 0000000000..9eab9a750a
--- /dev/null
+++ b/src/opengl/qglpixmapfilter_p.h
@@ -0,0 +1,94 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QGLPIXMAPFILTER_P_H
+#define QGLPIXMAPFILTER_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <private/qpixmapfilter_p.h>
+
+#include <QtOpenGL/qgl.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+class QGLPixelBuffer;
+
+QT_MODULE(OpenGL)
+
+class QGLPixmapFilterBase
+{
+public:
+    virtual ~QGLPixmapFilterBase() {}
+protected:
+    void bindTexture(const QPixmap &src) const;
+    void drawImpl(QPainter *painter, const QPointF &pos, const QPixmap &src, const QRectF &srcRect = QRectF()) const;
+
+    virtual bool processGL(QPainter *painter, const QPointF &pos, const QPixmap &src, const QRectF &srcRect) const = 0;
+};
+
+template <typename Filter>
+class QGLPixmapFilter : public Filter, public QGLPixmapFilterBase
+{
+public:
+    void draw(QPainter *painter, const QPointF &pos, const QPixmap &src, const QRectF &srcRect = QRectF())  const {
+        const QRectF source = srcRect.isNull() ? QRectF(src.rect()) : srcRect;
+        if (painter)
+           drawImpl(painter, pos, src, source);
+    }
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QGLPIXMAPFILTER_P_H
diff --git a/src/opengl/qglscreen_qws.cpp b/src/opengl/qglscreen_qws.cpp
new file mode 100644
index 0000000000..badb581844
--- /dev/null
+++ b/src/opengl/qglscreen_qws.cpp
@@ -0,0 +1,242 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QGLScreen>
+#include <QGLContext>
+#include <QGLWidget>
+#include "private/qglwindowsurface_qws_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QGLScreenPrivate
+{
+public:
+    QGLScreen::Options options;
+    QGLScreenSurfaceFunctions *functions;
+};
+
+/*!
+  \internal
+  \preliminary
+  \class QGLScreen
+
+  \brief This class encapsulates an OpenGL screen driver.
+*/
+
+QGLScreen::QGLScreen(int displayId)
+    : QScreen(displayId, GLClass), d_ptr(new QGLScreenPrivate)
+{
+    d_ptr->options = NoOptions;
+    d_ptr->functions = new QGLScreenSurfaceFunctions();
+}
+
+QGLScreen::~QGLScreen()
+{
+    delete d_ptr->functions;
+    delete d_ptr;
+}
+
+/*!
+    \since 4.3
+    \obsolete
+
+    Initializes the \a context and sets up the QGLWindowSurface of the
+    QWidget of \a context based on the parameters of \a context and
+    based on its own requirements.  The format() of \a context needs
+    to be updated with the actual parameters of the OpenGLES drawable
+    that was set up.
+
+    \a shareContext is used in the same way as for QGLContext. It is
+    the context with which \a context shares display lists and texture
+    ids etc. The window surface must be set up so that this sharing
+    works.
+
+    Returns true in case of success and false if it is not possible to
+    create the necessary OpenGLES drawable/context.
+
+    Since 4.4.2, this function will be not be called if options()
+    indicates that a native window or pixmap drawable can be created
+    via the functions in the surfaceFunctions() object.
+
+    This function is obsolete in Qt 4.5 and higher.  Use surfaceFunctions()
+    instead.
+
+    \sa options(), surfaceFunctions()
+*/
+bool
+QGLScreen::chooseContext(QGLContext *context, const QGLContext *shareContext)
+{
+    Q_UNUSED(context);
+    Q_UNUSED(shareContext);
+    return false;
+}
+
+/*!
+    \enum QGLScreen::Option
+    This enum defines options that can be set on QGLScreen instances.
+
+    \value NoOptions There are no special options on the screen.  This is the default.
+    \value NativeWindows Native windows can be created with QGLScreenSurfaceFunctions::createNativeWindow().
+    \value NativePixmaps Native pixmaps can be created with QGLScreenSurfaceFunctions::createNativePixmap().
+    \value NativeImages Native images can be created with QGLScreenSurfaceFunctions::createNativeImage().
+    \value Overlays The screen supports GL overlays.
+*/
+
+/*!
+    \since 4.4.2
+
+    Returns the options associated with this QGLScreen.
+
+    \sa setOptions()
+*/
+QGLScreen::Options QGLScreen::options() const
+{
+    return d_ptr->options;
+}
+
+/*!
+    \since 4.4.2
+
+    Sets the options associated with this QGLScreen to \a value.
+
+    \sa options()
+*/
+void QGLScreen::setOptions(QGLScreen::Options value)
+{
+    d_ptr->options = value;
+}
+
+/*!
+    \since 4.4.2
+
+    Returns the surface functions object for this QGLScreen.
+
+    \sa setSurfaceFunctions()
+*/
+QGLScreenSurfaceFunctions *QGLScreen::surfaceFunctions() const
+{
+    return d_ptr->functions;
+}
+
+/*!
+    \since 4.4.2
+
+    Sets the surface functions object for this QGLScreen to \a functions.
+    The QGLScreen will take over ownership of \a functions and delete
+    it when the QGLScreen is deleted.
+
+    \sa setSurfaceFunctions()
+*/
+void QGLScreen::setSurfaceFunctions(QGLScreenSurfaceFunctions *functions)
+{
+    if (functions && functions != d_ptr->functions) {
+        delete d_ptr->functions;
+        d_ptr->functions = functions;
+    }
+}
+
+/*!
+    \internal
+    \preliminary
+    \class QGLScreenSurfaceFunctions
+    \brief The QGLScreenSurfaceFunctions class encapsulates the functions for creating native windows and pixmaps for OpenGL ES.
+*/
+
+/*!
+    \since 4.4.2
+
+    Creates a native OpenGLES drawable for the surface of \a widget and
+    returns it in \a native.  Returns true if the OpenGLES drawable could
+    be created, or false if windows are not supported.
+
+    This function will be called if the NativeWindows option is set on
+    the screen.
+
+    \sa createNativePixmap(), createNativeImage(), QGLScreen::options()
+*/
+bool QGLScreenSurfaceFunctions::createNativeWindow(QWidget *widget, EGLNativeWindowType *native)
+{
+    Q_UNUSED(widget);
+    Q_UNUSED(native);
+    return false;
+}
+
+/*!
+    \since 4.4.2
+
+    Creates a native OpenGLES drawable for directly rendering into
+    \a pixmap and returns it in \a native.  Returns true if the OpenGLES
+    drawable could be created, or false if direct rendering into pixmaps
+    is not supported.
+
+    This function will be called if the NativePixmaps option is set on
+    the screen.
+
+    \sa createNativeWindow(), createNativeImage(), QGLScreen::options()
+*/
+bool QGLScreenSurfaceFunctions::createNativePixmap(QPixmap *pixmap, EGLNativePixmapType *native)
+{
+    Q_UNUSED(pixmap);
+    Q_UNUSED(native);
+    return false;
+}
+
+/*!
+    \since 4.4.2
+
+    Creates a native OpenGLES drawable for directly rendering into
+    \a image and returns it in \a native.  Returns true if the OpenGLES
+    drawable could be created, or false if direct rendering into images
+    is not supported.
+
+    This function will be called if the NativeImages option is set on
+    the screen.
+
+    \sa createNativeWindow(), createNativePixmap(), QGLScreen::options()
+*/
+bool QGLScreenSurfaceFunctions::createNativeImage(QImage *image, EGLNativePixmapType *native)
+{
+    Q_UNUSED(image);
+    Q_UNUSED(native);
+    return false;
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/qglscreen_qws.h b/src/opengl/qglscreen_qws.h
new file mode 100644
index 0000000000..1fefc1ce6e
--- /dev/null
+++ b/src/opengl/qglscreen_qws.h
@@ -0,0 +1,127 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCREENEGL_P_H
+#define QSCREENEGL_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of the QScreenEGL class.  This header file may change from
+// version to version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtGui/QScreen>
+#include <QtOpenGL/qgl.h>
+#if defined(QT_OPENGL_ES_2)
+#include <EGL/egl.h>
+#else
+#include <GLES/egl.h>
+#endif
+#if !defined(EGL_VERSION_1_3) && !defined(QEGL_NATIVE_TYPES_DEFINED)
+#undef EGLNativeWindowType
+#undef EGLNativePixmapType
+#undef EGLNativeDisplayType
+typedef NativeWindowType EGLNativeWindowType;
+typedef NativePixmapType EGLNativePixmapType;
+typedef NativeDisplayType EGLNativeDisplayType;
+#define QEGL_NATIVE_TYPES_DEFINED 1
+#endif
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(OpenGL)
+
+class QGLScreenPrivate;
+
+class Q_OPENGL_EXPORT QGLScreenSurfaceFunctions
+{
+public:
+    virtual bool createNativeWindow(QWidget *widget, EGLNativeWindowType *native);
+    virtual bool createNativePixmap(QPixmap *pixmap, EGLNativePixmapType *native);
+    virtual bool createNativeImage(QImage *image, EGLNativePixmapType *native);
+};
+
+class Q_OPENGL_EXPORT QGLScreen : public QScreen
+{
+    Q_DECLARE_PRIVATE(QGLScreen)
+public:
+    QGLScreen(int displayId);
+    virtual ~QGLScreen();
+
+    enum Option
+    {
+        NoOptions       = 0,
+        NativeWindows   = 1,
+        NativePixmaps   = 2,
+        NativeImages    = 4,
+        Overlays        = 8
+    };
+    Q_DECLARE_FLAGS(Options, Option)
+
+    QGLScreen::Options options() const;
+
+    virtual bool chooseContext(QGLContext *context, const QGLContext *shareContext);
+    virtual bool hasOpenGL() = 0;
+
+    QGLScreenSurfaceFunctions *surfaceFunctions() const;
+
+protected:
+    void setOptions(QGLScreen::Options value);
+    void setSurfaceFunctions(QGLScreenSurfaceFunctions *functions);
+
+private:
+    QGLScreenPrivate *d_ptr;
+};
+
+Q_DECLARE_OPERATORS_FOR_FLAGS(QGLScreen::Options)
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QSCREENEGL_P_H
diff --git a/src/opengl/qglshaderprogram.cpp b/src/opengl/qglshaderprogram.cpp
new file mode 100644
index 0000000000..4598bffabb
--- /dev/null
+++ b/src/opengl/qglshaderprogram.cpp
@@ -0,0 +1,3354 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qglshaderprogram.h"
+#include "qglextensions_p.h"
+#include "qgl_p.h"
+#include <QtCore/private/qobject_p.h>
+#include <QtCore/qdebug.h>
+#include <QtCore/qfile.h>
+#include <QtCore/qvarlengtharray.h>
+#include <QtCore/qvector.h>
+
+QT_BEGIN_NAMESPACE
+
+#if !defined(QT_OPENGL_ES_1)
+
+/*!
+    \class QGLShaderProgram
+    \brief The QGLShaderProgram class allows OpenGL shader programs to be linked and used.
+    \since 4.6
+    \ingroup painting-3D
+
+    \section1 Introduction
+
+    This class supports shader programs written in the OpenGL Shading
+    Language (GLSL) and in the OpenGL/ES Shading Language (GLSL/ES).
+
+    QGLShader and QGLShaderProgram shelter the programmer from the details of
+    compiling and linking vertex and fragment shaders.
+
+    The following example creates a vertex shader program using the
+    supplied source \c{code}.  Once compiled and linked, the shader
+    program is activated in the current QGLContext by calling
+    QGLShaderProgram::bind():
+
+    \snippet doc/src/snippets/code/src_opengl_qglshaderprogram.cpp 0
+
+    \section1 Writing portable shaders
+
+    Shader programs can be difficult to reuse across OpenGL implementations
+    because of varying levels of support for standard vertex attributes and
+    uniform variables.  In particular, GLSL/ES lacks all of the
+    standard variables that are present on desktop OpenGL systems:
+    \c{gl_Vertex}, \c{gl_Normal}, \c{gl_Color}, and so on.  Desktop OpenGL
+    lacks the variable qualifiers \c{highp}, \c{mediump}, and \c{lowp}.
+
+    The QGLShaderProgram class makes the process of writing portable shaders
+    easier by prefixing all shader programs with the following lines on
+    desktop OpenGL:
+
+    \code
+    #define highp
+    #define mediump
+    #define lowp
+    \endcode
+
+    This makes it possible to run most GLSL/ES shader programs
+    on desktop systems.  The programmer should restrict themselves
+    to just features that are present in GLSL/ES, and avoid
+    standard variable names that only work on the desktop.
+
+    \section1 Simple shader example
+
+    \snippet doc/src/snippets/code/src_opengl_qglshaderprogram.cpp 1
+
+    With the above shader program active, we can draw a green triangle
+    as follows:
+
+    \snippet doc/src/snippets/code/src_opengl_qglshaderprogram.cpp 2
+
+    \section1 Binary shaders and programs
+
+    Binary shaders may be specified using \c{glShaderBinary()} on
+    the return value from QGLShader::shaderId().  The QGLShader instance
+    containing the binary can then be added to the shader program with
+    addShader() and linked in the usual fashion with link().
+
+    Binary programs may be specified using \c{glProgramBinaryOES()}
+    on the return value from programId().  Then the application should
+    call link(), which will notice that the program has already been
+    specified and linked, allowing other operations to be performed
+    on the shader program.
+
+    \sa QGLShader
+*/
+
+/*!
+    \class QGLShader
+    \brief The QGLShader class allows OpenGL shaders to be compiled.
+    \since 4.6
+    \ingroup painting-3D
+
+    This class supports shaders written in the OpenGL Shading Language (GLSL)
+    and in the OpenGL/ES Shading Language (GLSL/ES).
+
+    QGLShader and QGLShaderProgram shelter the programmer from the details of
+    compiling and linking vertex and fragment shaders.
+
+    \sa QGLShaderProgram
+*/
+
+/*!
+    \enum QGLShader::ShaderTypeBit
+    This enum specifies the type of QGLShader that is being created.
+
+    \value Vertex Vertex shader written in the OpenGL Shading Language (GLSL).
+    \value Fragment Fragment shader written in the OpenGL Shading Language (GLSL).
+    \value Geometry Geometry shaders written in the OpenGL Shading
+           Language (GLSL), based on the GL_EXT_geometry_shader4 extension.
+*/
+
+#ifndef GL_FRAGMENT_SHADER
+#define GL_FRAGMENT_SHADER 0x8B30
+#endif
+#ifndef GL_VERTEX_SHADER
+#define GL_VERTEX_SHADER 0x8B31
+#endif
+#ifndef GL_COMPILE_STATUS
+#define GL_COMPILE_STATUS 0x8B81
+#endif
+#ifndef GL_LINK_STATUS
+#define GL_LINK_STATUS 0x8B82
+#endif
+#ifndef GL_INFO_LOG_LENGTH
+#define GL_INFO_LOG_LENGTH 0x8B84
+#endif
+#ifndef GL_ACTIVE_UNIFORMS
+#define GL_ACTIVE_UNIFORMS 0x8B86
+#endif
+#ifndef GL_ACTIVE_UNIFORM_MAX_LENGTH
+#define GL_ACTIVE_UNIFORM_MAX_LENGTH 0x8B87
+#endif
+#ifndef GL_ACTIVE_ATTRIBUTES
+#define GL_ACTIVE_ATTRIBUTES 0x8B89
+#endif
+#ifndef GL_ACTIVE_ATTRIBUTE_MAX_LENGTH
+#define GL_ACTIVE_ATTRIBUTE_MAX_LENGTH 0x8B8A
+#endif
+#ifndef GL_CURRENT_VERTEX_ATTRIB
+#define GL_CURRENT_VERTEX_ATTRIB 0x8626
+#endif
+#ifndef GL_SHADER_SOURCE_LENGTH
+#define GL_SHADER_SOURCE_LENGTH 0x8B88
+#endif
+#ifndef GL_SHADER_BINARY_FORMATS
+#define GL_SHADER_BINARY_FORMATS          0x8DF8
+#endif
+#ifndef GL_NUM_SHADER_BINARY_FORMATS
+#define GL_NUM_SHADER_BINARY_FORMATS      0x8DF9
+#endif
+
+class QGLShaderPrivate : public QObjectPrivate
+{
+    Q_DECLARE_PUBLIC(QGLShader)
+public:
+    QGLShaderPrivate(const QGLContext *context, QGLShader::ShaderType type)
+        : shaderGuard(context)
+        , shaderType(type)
+        , compiled(false)
+    {
+    }
+    ~QGLShaderPrivate();
+
+    QGLSharedResourceGuard shaderGuard;
+    QGLShader::ShaderType shaderType;
+    bool compiled;
+    QString log;
+
+    bool create();
+    bool compile(QGLShader *q);
+    void deleteShader();
+};
+
+#define ctx shaderGuard.context()
+
+QGLShaderPrivate::~QGLShaderPrivate()
+{
+    if (shaderGuard.id()) {
+        QGLShareContextScope scope(shaderGuard.context());
+        glDeleteShader(shaderGuard.id());
+    }
+}
+
+bool QGLShaderPrivate::create()
+{
+    const QGLContext *context = shaderGuard.context();
+    if (!context)
+        return false;
+    if (qt_resolve_glsl_extensions(const_cast<QGLContext *>(context))) {
+        GLuint shader;
+        if (shaderType == QGLShader::Vertex)
+            shader = glCreateShader(GL_VERTEX_SHADER);
+        else if (shaderType == QGLShader::Geometry)
+            shader = glCreateShader(GL_GEOMETRY_SHADER_EXT);
+        else
+            shader = glCreateShader(GL_FRAGMENT_SHADER);
+        if (!shader) {
+            qWarning() << "QGLShader: could not create shader";
+            return false;
+        }
+        shaderGuard.setId(shader);
+        return true;
+    } else {
+        return false;
+    }
+}
+
+bool QGLShaderPrivate::compile(QGLShader *q)
+{
+    GLuint shader = shaderGuard.id();
+    if (!shader)
+        return false;
+    glCompileShader(shader);
+    GLint value = 0;
+    glGetShaderiv(shader, GL_COMPILE_STATUS, &value);
+    compiled = (value != 0);
+    value = 0;
+    glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &value);
+    if (!compiled && value > 1) {
+        char *logbuf = new char [value];
+        GLint len;
+        glGetShaderInfoLog(shader, value, &len, logbuf);
+        log = QString::fromLatin1(logbuf);
+        QString name = q->objectName();
+
+        const char *types[] = {
+            "Fragment",
+            "Vertex",
+            "Geometry",
+            ""
+        };
+
+        const char *type = types[3];
+        if (shaderType == QGLShader::Fragment)
+            type = types[0];
+        else if (shaderType == QGLShader::Vertex)
+            type = types[1];
+        else if (shaderType == QGLShader::Geometry)
+            type = types[2];
+
+        if (name.isEmpty())
+            qWarning("QGLShader::compile(%s): %s", type, qPrintable(log));
+        else
+            qWarning("QGLShader::compile(%s)[%s]: %s", type, qPrintable(name), qPrintable(log));
+
+        delete [] logbuf;
+    }
+    return compiled;
+}
+
+void QGLShaderPrivate::deleteShader()
+{
+    if (shaderGuard.id()) {
+        glDeleteShader(shaderGuard.id());
+        shaderGuard.setId(0);
+    }
+}
+
+#undef ctx
+#define ctx d->shaderGuard.context()
+
+/*!
+    Constructs a new QGLShader object of the specified \a type
+    and attaches it to \a parent.  If shader programs are not supported,
+    QGLShaderProgram::hasOpenGLShaderPrograms() will return false.
+
+    This constructor is normally followed by a call to compileSourceCode()
+    or compileSourceFile().
+
+    The shader will be associated with the current QGLContext.
+
+    \sa compileSourceCode(), compileSourceFile()
+*/
+QGLShader::QGLShader(QGLShader::ShaderType type, QObject *parent)
+    : QObject(*new QGLShaderPrivate(QGLContext::currentContext(), type), parent)
+{
+    Q_D(QGLShader);
+    d->create();
+}
+
+/*!
+    Constructs a new QGLShader object of the specified \a type
+    and attaches it to \a parent.  If shader programs are not supported,
+    then QGLShaderProgram::hasOpenGLShaderPrograms() will return false.
+
+    This constructor is normally followed by a call to compileSourceCode()
+    or compileSourceFile().
+
+    The shader will be associated with \a context.
+
+    \sa compileSourceCode(), compileSourceFile()
+*/
+QGLShader::QGLShader(QGLShader::ShaderType type, const QGLContext *context, QObject *parent)
+    : QObject(*new QGLShaderPrivate(context ? context : QGLContext::currentContext(), type), parent)
+{
+    Q_D(QGLShader);
+#ifndef QT_NO_DEBUG
+    if (context && !QGLContext::areSharing(context, QGLContext::currentContext())) {
+        qWarning("QGLShader::QGLShader: \'context\' must be the current context or sharing with it.");
+        return;
+    }
+#endif
+    d->create();
+}
+
+/*!
+    Deletes this shader.  If the shader has been attached to a
+    QGLShaderProgram object, then the actual shader will stay around
+    until the QGLShaderProgram is destroyed.
+*/
+QGLShader::~QGLShader()
+{
+}
+
+/*!
+    Returns the type of this shader.
+*/
+QGLShader::ShaderType QGLShader::shaderType() const
+{
+    Q_D(const QGLShader);
+    return d->shaderType;
+}
+
+// The precision qualifiers are useful on OpenGL/ES systems,
+// but usually not present on desktop systems.  Define the
+// keywords to empty strings on desktop systems.
+#ifndef QT_OPENGL_ES
+#define QGL_DEFINE_QUALIFIERS 1
+static const char qualifierDefines[] =
+    "#define lowp\n"
+    "#define mediump\n"
+    "#define highp\n";
+#endif
+
+// The "highp" qualifier doesn't exist in fragment shaders
+// on all ES platforms.  When it doesn't exist, use "mediump".
+#ifdef QT_OPENGL_ES
+#define QGL_REDEFINE_HIGHP 1
+static const char redefineHighp[] =
+    "#ifndef GL_FRAGMENT_PRECISION_HIGH\n"
+    "#define highp mediump\n"
+    "#endif\n";
+#endif
+
+/*!
+    Sets the \a source code for this shader and compiles it.
+    Returns true if the source was successfully compiled, false otherwise.
+
+    \sa compileSourceFile()
+*/
+bool QGLShader::compileSourceCode(const char *source)
+{
+    Q_D(QGLShader);
+    if (d->shaderGuard.id()) {
+        QVarLengthArray<const char *, 4> src;
+        QVarLengthArray<GLint, 4> srclen;
+        int headerLen = 0;
+        while (source && source[headerLen] == '#') {
+            // Skip #version and #extension directives at the start of
+            // the shader code.  We need to insert the qualifierDefines
+            // and redefineHighp just after them.
+            if (qstrncmp(source + headerLen, "#version", 8) != 0 &&
+                    qstrncmp(source + headerLen, "#extension", 10) != 0) {
+                break;
+            }
+            while (source[headerLen] != '\0' && source[headerLen] != '\n')
+                ++headerLen;
+            if (source[headerLen] == '\n')
+                ++headerLen;
+        }
+        if (headerLen > 0) {
+            src.append(source);
+            srclen.append(GLint(headerLen));
+        }
+#ifdef QGL_DEFINE_QUALIFIERS
+        src.append(qualifierDefines);
+        srclen.append(GLint(sizeof(qualifierDefines) - 1));
+#endif
+#ifdef QGL_REDEFINE_HIGHP
+        if (d->shaderType == Fragment) {
+            src.append(redefineHighp);
+            srclen.append(GLint(sizeof(redefineHighp) - 1));
+        }
+#endif
+        src.append(source + headerLen);
+        srclen.append(GLint(qstrlen(source + headerLen)));
+        glShaderSource(d->shaderGuard.id(), src.size(), src.data(), srclen.data());
+        return d->compile(this);
+    } else {
+        return false;
+    }
+}
+
+/*!
+    \overload
+
+    Sets the \a source code for this shader and compiles it.
+    Returns true if the source was successfully compiled, false otherwise.
+
+    \sa compileSourceFile()
+*/
+bool QGLShader::compileSourceCode(const QByteArray& source)
+{
+    return compileSourceCode(source.constData());
+}
+
+/*!
+    \overload
+
+    Sets the \a source code for this shader and compiles it.
+    Returns true if the source was successfully compiled, false otherwise.
+
+    \sa compileSourceFile()
+*/
+bool QGLShader::compileSourceCode(const QString& source)
+{
+    return compileSourceCode(source.toLatin1().constData());
+}
+
+/*!
+    Sets the source code for this shader to the contents of \a fileName
+    and compiles it.  Returns true if the file could be opened and the
+    source compiled, false otherwise.
+
+    \sa compileSourceCode()
+*/
+bool QGLShader::compileSourceFile(const QString& fileName)
+{
+    QFile file(fileName);
+    if (!file.open(QFile::ReadOnly)) {
+        qWarning() << "QGLShader: Unable to open file" << fileName;
+        return false;
+    }
+
+    QByteArray contents = file.readAll();
+    return compileSourceCode(contents.constData());
+}
+
+/*!
+    Returns the source code for this shader.
+
+    \sa compileSourceCode()
+*/
+QByteArray QGLShader::sourceCode() const
+{
+    Q_D(const QGLShader);
+    GLuint shader = d->shaderGuard.id();
+    if (!shader)
+        return QByteArray();
+    GLint size = 0;
+    glGetShaderiv(shader, GL_SHADER_SOURCE_LENGTH, &size);
+    if (size <= 0)
+        return QByteArray();
+    GLint len = 0;
+    char *source = new char [size];
+    glGetShaderSource(shader, size, &len, source);
+    QByteArray src(source);
+    delete [] source;
+    return src;
+}
+
+/*!
+    Returns true if this shader has been compiled; false otherwise.
+
+    \sa compileSourceCode(), compileSourceFile()
+*/
+bool QGLShader::isCompiled() const
+{
+    Q_D(const QGLShader);
+    return d->compiled;
+}
+
+/*!
+    Returns the errors and warnings that occurred during the last compile.
+
+    \sa compileSourceCode(), compileSourceFile()
+*/
+QString QGLShader::log() const
+{
+    Q_D(const QGLShader);
+    return d->log;
+}
+
+/*!
+    Returns the OpenGL identifier associated with this shader.
+
+    \sa QGLShaderProgram::programId()
+*/
+GLuint QGLShader::shaderId() const
+{
+    Q_D(const QGLShader);
+    return d->shaderGuard.id();
+}
+
+
+
+
+
+#undef ctx
+#define ctx programGuard.context()
+
+class QGLShaderProgramPrivate : public QObjectPrivate
+{
+    Q_DECLARE_PUBLIC(QGLShaderProgram)
+public:
+    QGLShaderProgramPrivate(const QGLContext *context)
+        : programGuard(context)
+        , linked(false)
+        , inited(false)
+        , removingShaders(false)
+        , geometryVertexCount(64)
+        , geometryInputType(0)
+        , geometryOutputType(0)
+    {
+    }
+    ~QGLShaderProgramPrivate();
+
+    QGLSharedResourceGuard programGuard;
+    bool linked;
+    bool inited;
+    bool removingShaders;
+
+    int geometryVertexCount;
+    GLenum geometryInputType;
+    GLenum geometryOutputType;
+
+    QString log;
+    QList<QGLShader *> shaders;
+    QList<QGLShader *> anonShaders;
+
+    bool hasShader(QGLShader::ShaderType type) const;
+};
+
+QGLShaderProgramPrivate::~QGLShaderProgramPrivate()
+{
+    if (programGuard.id()) {
+        QGLShareContextScope scope(programGuard.context());
+        glDeleteProgram(programGuard.id());
+    }
+}
+
+bool QGLShaderProgramPrivate::hasShader(QGLShader::ShaderType type) const
+{
+    foreach (QGLShader *shader, shaders) {
+        if (shader->shaderType() == type)
+            return true;
+    }
+    return false;
+}
+
+#undef ctx
+#define ctx d->programGuard.context()
+
+/*!
+    Constructs a new shader program and attaches it to \a parent.
+    The program will be invalid until addShader() is called.
+
+    The shader program will be associated with the current QGLContext.
+
+    \sa addShader()
+*/
+QGLShaderProgram::QGLShaderProgram(QObject *parent)
+    : QObject(*new QGLShaderProgramPrivate(QGLContext::currentContext()), parent)
+{
+}
+
+/*!
+    Constructs a new shader program and attaches it to \a parent.
+    The program will be invalid until addShader() is called.
+
+    The shader program will be associated with \a context.
+
+    \sa addShader()
+*/
+QGLShaderProgram::QGLShaderProgram(const QGLContext *context, QObject *parent)
+    : QObject(*new QGLShaderProgramPrivate(context), parent)
+{
+}
+
+/*!
+    Deletes this shader program.
+*/
+QGLShaderProgram::~QGLShaderProgram()
+{
+}
+
+bool QGLShaderProgram::init()
+{
+    Q_D(QGLShaderProgram);
+    if (d->programGuard.id() || d->inited)
+        return true;
+    d->inited = true;
+    const QGLContext *context = d->programGuard.context();
+    if (!context) {
+        context = QGLContext::currentContext();
+        d->programGuard.setContext(context);
+    }
+
+    if (!context)
+        return false;
+    if (qt_resolve_glsl_extensions(const_cast<QGLContext *>(context))) {
+        GLuint program = glCreateProgram();
+        if (!program) {
+            qWarning() << "QGLShaderProgram: could not create shader program";
+            return false;
+        }
+        d->programGuard.setId(program);
+        return true;
+    } else {
+        qWarning() << "QGLShaderProgram: shader programs are not supported";
+        return false;
+    }
+}
+
+/*!
+    Adds a compiled \a shader to this shader program.  Returns true
+    if the shader could be added, or false otherwise.
+
+    Ownership of the \a shader object remains with the caller.
+    It will not be deleted when this QGLShaderProgram instance
+    is deleted.  This allows the caller to add the same shader
+    to multiple shader programs.
+
+    \sa addShaderFromSourceCode(), addShaderFromSourceFile()
+    \sa removeShader(), link(), removeAllShaders()
+*/
+bool QGLShaderProgram::addShader(QGLShader *shader)
+{
+    Q_D(QGLShaderProgram);
+    if (!init())
+        return false;
+    if (d->shaders.contains(shader))
+        return true;    // Already added to this shader program.
+    if (d->programGuard.id() && shader) {
+        if (!QGLContext::areSharing(shader->d_func()->shaderGuard.context(),
+                                    d->programGuard.context())) {
+            qWarning("QGLShaderProgram::addShader: Program and shader are not associated with same context.");
+            return false;
+        }
+        if (!shader->d_func()->shaderGuard.id())
+            return false;
+        glAttachShader(d->programGuard.id(), shader->d_func()->shaderGuard.id());
+        d->linked = false;  // Program needs to be relinked.
+        d->shaders.append(shader);
+        connect(shader, SIGNAL(destroyed()), this, SLOT(shaderDestroyed()));
+        return true;
+    } else {
+        return false;
+    }
+}
+
+/*!
+    Compiles \a source as a shader of the specified \a type and
+    adds it to this shader program.  Returns true if compilation
+    was successful, false otherwise.  The compilation errors
+    and warnings will be made available via log().
+
+    This function is intended to be a short-cut for quickly
+    adding vertex and fragment shaders to a shader program without
+    creating an instance of QGLShader first.
+
+    \sa addShader(), addShaderFromSourceFile()
+    \sa removeShader(), link(), log(), removeAllShaders()
+*/
+bool QGLShaderProgram::addShaderFromSourceCode(QGLShader::ShaderType type, const char *source)
+{
+    Q_D(QGLShaderProgram);
+    if (!init())
+        return false;
+    QGLShader *shader = new QGLShader(type, this);
+    if (!shader->compileSourceCode(source)) {
+        d->log = shader->log();
+        delete shader;
+        return false;
+    }
+    d->anonShaders.append(shader);
+    return addShader(shader);
+}
+
+/*!
+    \overload
+
+    Compiles \a source as a shader of the specified \a type and
+    adds it to this shader program.  Returns true if compilation
+    was successful, false otherwise.  The compilation errors
+    and warnings will be made available via log().
+
+    This function is intended to be a short-cut for quickly
+    adding vertex and fragment shaders to a shader program without
+    creating an instance of QGLShader first.
+
+    \sa addShader(), addShaderFromSourceFile()
+    \sa removeShader(), link(), log(), removeAllShaders()
+*/
+bool QGLShaderProgram::addShaderFromSourceCode(QGLShader::ShaderType type, const QByteArray& source)
+{
+    return addShaderFromSourceCode(type, source.constData());
+}
+
+/*!
+    \overload
+
+    Compiles \a source as a shader of the specified \a type and
+    adds it to this shader program.  Returns true if compilation
+    was successful, false otherwise.  The compilation errors
+    and warnings will be made available via log().
+
+    This function is intended to be a short-cut for quickly
+    adding vertex and fragment shaders to a shader program without
+    creating an instance of QGLShader first.
+
+    \sa addShader(), addShaderFromSourceFile()
+    \sa removeShader(), link(), log(), removeAllShaders()
+*/
+bool QGLShaderProgram::addShaderFromSourceCode(QGLShader::ShaderType type, const QString& source)
+{
+    return addShaderFromSourceCode(type, source.toLatin1().constData());
+}
+
+/*!
+    Compiles the contents of \a fileName as a shader of the specified
+    \a type and adds it to this shader program.  Returns true if
+    compilation was successful, false otherwise.  The compilation errors
+    and warnings will be made available via log().
+
+    This function is intended to be a short-cut for quickly
+    adding vertex and fragment shaders to a shader program without
+    creating an instance of QGLShader first.
+
+    \sa addShader(), addShaderFromSourceCode()
+*/
+bool QGLShaderProgram::addShaderFromSourceFile
+    (QGLShader::ShaderType type, const QString& fileName)
+{
+    Q_D(QGLShaderProgram);
+    if (!init())
+        return false;
+    QGLShader *shader = new QGLShader(type, this);
+    if (!shader->compileSourceFile(fileName)) {
+        d->log = shader->log();
+        delete shader;
+        return false;
+    }
+    d->anonShaders.append(shader);
+    return addShader(shader);
+}
+
+/*!
+    Removes \a shader from this shader program.  The object is not deleted.
+
+    \sa addShader(), link(), removeAllShaders()
+*/
+void QGLShaderProgram::removeShader(QGLShader *shader)
+{
+    Q_D(QGLShaderProgram);
+    if (d->programGuard.id() && shader && shader->d_func()->shaderGuard.id()) {
+        QGLShareContextScope scope(d->programGuard.context());
+        glDetachShader(d->programGuard.id(), shader->d_func()->shaderGuard.id());
+    }
+    d->linked = false;  // Program needs to be relinked.
+    if (shader) {
+        d->shaders.removeAll(shader);
+        d->anonShaders.removeAll(shader);
+        disconnect(shader, SIGNAL(destroyed()), this, SLOT(shaderDestroyed()));
+    }
+}
+
+/*!
+    Returns a list of all shaders that have been added to this shader
+    program using addShader().
+
+    \sa addShader(), removeShader()
+*/
+QList<QGLShader *> QGLShaderProgram::shaders() const
+{
+    Q_D(const QGLShaderProgram);
+    return d->shaders;
+}
+
+/*!
+    Removes all of the shaders that were added to this program previously.
+    The QGLShader objects for the shaders will not be deleted if they
+    were constructed externally.  QGLShader objects that are constructed
+    internally by QGLShaderProgram will be deleted.
+
+    \sa addShader(), removeShader()
+*/
+void QGLShaderProgram::removeAllShaders()
+{
+    Q_D(QGLShaderProgram);
+    d->removingShaders = true;
+    foreach (QGLShader *shader, d->shaders) {
+        if (d->programGuard.id() && shader && shader->d_func()->shaderGuard.id())
+            glDetachShader(d->programGuard.id(), shader->d_func()->shaderGuard.id());
+    }
+    foreach (QGLShader *shader, d->anonShaders) {
+        // Delete shader objects that were created anonymously.
+        delete shader;
+    }
+    d->shaders.clear();
+    d->anonShaders.clear();
+    d->linked = false;  // Program needs to be relinked.
+    d->removingShaders = false;
+}
+
+/*!
+    Links together the shaders that were added to this program with
+    addShader().  Returns true if the link was successful or
+    false otherwise.  If the link failed, the error messages can
+    be retrieved with log().
+
+    Subclasses can override this function to initialize attributes
+    and uniform variables for use in specific shader programs.
+
+    If the shader program was already linked, calling this
+    function again will force it to be re-linked.
+
+    \sa addShader(), log()
+*/
+bool QGLShaderProgram::link()
+{
+    Q_D(QGLShaderProgram);
+    GLuint program = d->programGuard.id();
+    if (!program)
+        return false;
+
+    GLint value;
+    if (d->shaders.isEmpty()) {
+        // If there are no explicit shaders, then it is possible that the
+        // application added a program binary with glProgramBinaryOES(),
+        // or otherwise populated the shaders itself.  Check to see if the
+        // program is already linked and bail out if so.
+        value = 0;
+        glGetProgramiv(program, GL_LINK_STATUS, &value);
+        d->linked = (value != 0);
+        if (d->linked)
+            return true;
+    }
+
+    // Set up the geometry shader parameters
+    if (glProgramParameteriEXT) {
+        foreach (QGLShader *shader, d->shaders) {
+            if (shader->shaderType() & QGLShader::Geometry) {
+                glProgramParameteriEXT(program, GL_GEOMETRY_INPUT_TYPE_EXT,
+                                       d->geometryInputType);
+                glProgramParameteriEXT(program, GL_GEOMETRY_OUTPUT_TYPE_EXT,
+                                       d->geometryOutputType);
+                glProgramParameteriEXT(program, GL_GEOMETRY_VERTICES_OUT_EXT,
+                                       d->geometryVertexCount);
+                break;
+            }
+        }
+    }
+
+    glLinkProgram(program);
+    value = 0;
+    glGetProgramiv(program, GL_LINK_STATUS, &value);
+    d->linked = (value != 0);
+    value = 0;
+    glGetProgramiv(program, GL_INFO_LOG_LENGTH, &value);
+    d->log = QString();
+    if (value > 1) {
+        char *logbuf = new char [value];
+        GLint len;
+        glGetProgramInfoLog(program, value, &len, logbuf);
+        d->log = QString::fromLatin1(logbuf);
+        QString name = objectName();
+        if (name.isEmpty())
+            qWarning() << "QGLShader::link:" << d->log;
+        else
+            qWarning() << "QGLShader::link[" << name << "]:" << d->log;
+        delete [] logbuf;
+    }
+    return d->linked;
+}
+
+/*!
+    Returns true if this shader program has been linked; false otherwise.
+
+    \sa link()
+*/
+bool QGLShaderProgram::isLinked() const
+{
+    Q_D(const QGLShaderProgram);
+    return d->linked;
+}
+
+/*!
+    Returns the errors and warnings that occurred during the last link()
+    or addShader() with explicitly specified source code.
+
+    \sa link()
+*/
+QString QGLShaderProgram::log() const
+{
+    Q_D(const QGLShaderProgram);
+    return d->log;
+}
+
+/*!
+    Binds this shader program to the active QGLContext and makes
+    it the current shader program.  Any previously bound shader program
+    is released.  This is equivalent to calling \c{glUseProgram()} on
+    programId().  Returns true if the program was successfully bound;
+    false otherwise.  If the shader program has not yet been linked,
+    or it needs to be re-linked, this function will call link().
+
+    \sa link(), release()
+*/
+bool QGLShaderProgram::bind()
+{
+    Q_D(QGLShaderProgram);
+    GLuint program = d->programGuard.id();
+    if (!program)
+        return false;
+    if (!d->linked && !link())
+        return false;
+#ifndef QT_NO_DEBUG
+    if (!QGLContext::areSharing(d->programGuard.context(), QGLContext::currentContext())) {
+        qWarning("QGLShaderProgram::bind: program is not valid in the current context.");
+        return false;
+    }
+#endif
+    glUseProgram(program);
+    return true;
+}
+
+#undef ctx
+#define ctx QGLContext::currentContext()
+
+/*!
+    Releases the active shader program from the current QGLContext.
+    This is equivalent to calling \c{glUseProgram(0)}.
+
+    \sa bind()
+*/
+void QGLShaderProgram::release()
+{
+#ifndef QT_NO_DEBUG
+    Q_D(QGLShaderProgram);
+    if (!QGLContext::areSharing(d->programGuard.context(), QGLContext::currentContext()))
+        qWarning("QGLShaderProgram::release: program is not valid in the current context.");
+#endif
+#if defined(QT_OPENGL_ES_2)
+    glUseProgram(0);
+#else
+    if (glUseProgram)
+        glUseProgram(0);
+#endif
+}
+
+#undef ctx
+#define ctx d->programGuard.context()
+
+/*!
+    Returns the OpenGL identifier associated with this shader program.
+
+    \sa QGLShader::shaderId()
+*/
+GLuint QGLShaderProgram::programId() const
+{
+    Q_D(const QGLShaderProgram);
+    GLuint id = d->programGuard.id();
+    if (id)
+        return id;
+
+    // Create the identifier if we don't have one yet.  This is for
+    // applications that want to create the attached shader configuration
+    // themselves, particularly those using program binaries.
+    if (!const_cast<QGLShaderProgram *>(this)->init())
+        return 0;
+    return d->programGuard.id();
+}
+
+/*!
+    Binds the attribute \a name to the specified \a location.  This
+    function can be called before or after the program has been linked.
+    Any attributes that have not been explicitly bound when the program
+    is linked will be assigned locations automatically.
+
+    When this function is called after the program has been linked,
+    the program will need to be relinked for the change to take effect.
+
+    \sa attributeLocation()
+*/
+void QGLShaderProgram::bindAttributeLocation(const char *name, int location)
+{
+    Q_D(QGLShaderProgram);
+    if (!init())
+        return;
+    glBindAttribLocation(d->programGuard.id(), location, name);
+    d->linked = false;  // Program needs to be relinked.
+}
+
+/*!
+    \overload
+
+    Binds the attribute \a name to the specified \a location.  This
+    function can be called before or after the program has been linked.
+    Any attributes that have not been explicitly bound when the program
+    is linked will be assigned locations automatically.
+
+    When this function is called after the program has been linked,
+    the program will need to be relinked for the change to take effect.
+
+    \sa attributeLocation()
+*/
+void QGLShaderProgram::bindAttributeLocation(const QByteArray& name, int location)
+{
+    bindAttributeLocation(name.constData(), location);
+}
+
+/*!
+    \overload
+
+    Binds the attribute \a name to the specified \a location.  This
+    function can be called before or after the program has been linked.
+    Any attributes that have not been explicitly bound when the program
+    is linked will be assigned locations automatically.
+
+    When this function is called after the program has been linked,
+    the program will need to be relinked for the change to take effect.
+
+    \sa attributeLocation()
+*/
+void QGLShaderProgram::bindAttributeLocation(const QString& name, int location)
+{
+    bindAttributeLocation(name.toLatin1().constData(), location);
+}
+
+/*!
+    Returns the location of the attribute \a name within this shader
+    program's parameter list.  Returns -1 if \a name is not a valid
+    attribute for this shader program.
+
+    \sa uniformLocation(), bindAttributeLocation()
+*/
+int QGLShaderProgram::attributeLocation(const char *name) const
+{
+    Q_D(const QGLShaderProgram);
+    if (d->linked) {
+        return glGetAttribLocation(d->programGuard.id(), name);
+    } else {
+        qWarning() << "QGLShaderProgram::attributeLocation(" << name
+                   << "): shader program is not linked";
+        return -1;
+    }
+}
+
+/*!
+    \overload
+
+    Returns the location of the attribute \a name within this shader
+    program's parameter list.  Returns -1 if \a name is not a valid
+    attribute for this shader program.
+
+    \sa uniformLocation(), bindAttributeLocation()
+*/
+int QGLShaderProgram::attributeLocation(const QByteArray& name) const
+{
+    return attributeLocation(name.constData());
+}
+
+/*!
+    \overload
+
+    Returns the location of the attribute \a name within this shader
+    program's parameter list.  Returns -1 if \a name is not a valid
+    attribute for this shader program.
+
+    \sa uniformLocation(), bindAttributeLocation()
+*/
+int QGLShaderProgram::attributeLocation(const QString& name) const
+{
+    return attributeLocation(name.toLatin1().constData());
+}
+
+/*!
+    Sets the attribute at \a location in the current context to \a value.
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue(int location, GLfloat value)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1)
+        glVertexAttrib1fv(location, &value);
+}
+
+/*!
+    \overload
+
+    Sets the attribute called \a name in the current context to \a value.
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue(const char *name, GLfloat value)
+{
+    setAttributeValue(attributeLocation(name), value);
+}
+
+/*!
+    Sets the attribute at \a location in the current context to
+    the 2D vector (\a x, \a y).
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue(int location, GLfloat x, GLfloat y)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1) {
+        GLfloat values[2] = {x, y};
+        glVertexAttrib2fv(location, values);
+    }
+}
+
+/*!
+    \overload
+
+    Sets the attribute called \a name in the current context to
+    the 2D vector (\a x, \a y).
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue(const char *name, GLfloat x, GLfloat y)
+{
+    setAttributeValue(attributeLocation(name), x, y);
+}
+
+/*!
+    Sets the attribute at \a location in the current context to
+    the 3D vector (\a x, \a y, \a z).
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue
+        (int location, GLfloat x, GLfloat y, GLfloat z)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1) {
+        GLfloat values[3] = {x, y, z};
+        glVertexAttrib3fv(location, values);
+    }
+}
+
+/*!
+    \overload
+
+    Sets the attribute called \a name in the current context to
+    the 3D vector (\a x, \a y, \a z).
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue
+        (const char *name, GLfloat x, GLfloat y, GLfloat z)
+{
+    setAttributeValue(attributeLocation(name), x, y, z);
+}
+
+/*!
+    Sets the attribute at \a location in the current context to
+    the 4D vector (\a x, \a y, \a z, \a w).
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue
+        (int location, GLfloat x, GLfloat y, GLfloat z, GLfloat w)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1) {
+        GLfloat values[4] = {x, y, z, w};
+        glVertexAttrib4fv(location, values);
+    }
+}
+
+/*!
+    \overload
+
+    Sets the attribute called \a name in the current context to
+    the 4D vector (\a x, \a y, \a z, \a w).
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue
+        (const char *name, GLfloat x, GLfloat y, GLfloat z, GLfloat w)
+{
+    setAttributeValue(attributeLocation(name), x, y, z, w);
+}
+
+/*!
+    Sets the attribute at \a location in the current context to \a value.
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue(int location, const QVector2D& value)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1)
+        glVertexAttrib2fv(location, reinterpret_cast<const GLfloat *>(&value));
+}
+
+/*!
+    \overload
+
+    Sets the attribute called \a name in the current context to \a value.
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue(const char *name, const QVector2D& value)
+{
+    setAttributeValue(attributeLocation(name), value);
+}
+
+/*!
+    Sets the attribute at \a location in the current context to \a value.
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue(int location, const QVector3D& value)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1)
+        glVertexAttrib3fv(location, reinterpret_cast<const GLfloat *>(&value));
+}
+
+/*!
+    \overload
+
+    Sets the attribute called \a name in the current context to \a value.
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue(const char *name, const QVector3D& value)
+{
+    setAttributeValue(attributeLocation(name), value);
+}
+
+/*!
+    Sets the attribute at \a location in the current context to \a value.
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue(int location, const QVector4D& value)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1)
+        glVertexAttrib4fv(location, reinterpret_cast<const GLfloat *>(&value));
+}
+
+/*!
+    \overload
+
+    Sets the attribute called \a name in the current context to \a value.
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue(const char *name, const QVector4D& value)
+{
+    setAttributeValue(attributeLocation(name), value);
+}
+
+/*!
+    Sets the attribute at \a location in the current context to \a value.
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue(int location, const QColor& value)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1) {
+        GLfloat values[4] = {GLfloat(value.redF()), GLfloat(value.greenF()),
+                             GLfloat(value.blueF()), GLfloat(value.alphaF())};
+        glVertexAttrib4fv(location, values);
+    }
+}
+
+/*!
+    \overload
+
+    Sets the attribute called \a name in the current context to \a value.
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue(const char *name, const QColor& value)
+{
+    setAttributeValue(attributeLocation(name), value);
+}
+
+/*!
+    Sets the attribute at \a location in the current context to the
+    contents of \a values, which contains \a columns elements, each
+    consisting of \a rows elements.  The \a rows value should be
+    1, 2, 3, or 4.  This function is typically used to set matrix
+    values and column vectors.
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue
+    (int location, const GLfloat *values, int columns, int rows)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (rows < 1 || rows > 4) {
+        qWarning() << "QGLShaderProgram::setAttributeValue: rows" << rows << "not supported";
+        return;
+    }
+    if (location != -1) {
+        while (columns-- > 0) {
+            if (rows == 1)
+                glVertexAttrib1fv(location, values);
+            else if (rows == 2)
+                glVertexAttrib2fv(location, values);
+            else if (rows == 3)
+                glVertexAttrib3fv(location, values);
+            else
+                glVertexAttrib4fv(location, values);
+            values += rows;
+            ++location;
+        }
+    }
+}
+
+/*!
+    \overload
+
+    Sets the attribute called \a name in the current context to the
+    contents of \a values, which contains \a columns elements, each
+    consisting of \a rows elements.  The \a rows value should be
+    1, 2, 3, or 4.  This function is typically used to set matrix
+    values and column vectors.
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue
+    (const char *name, const GLfloat *values, int columns, int rows)
+{
+    setAttributeValue(attributeLocation(name), values, columns, rows);
+}
+
+/*!
+    Sets an array of vertex \a values on the attribute at \a location
+    in this shader program.  The \a tupleSize indicates the number of
+    components per vertex (1, 2, 3, or 4), and the \a stride indicates
+    the number of bytes between vertices.  A default \a stride value
+    of zero indicates that the vertices are densely packed in \a values.
+
+    The array will become active when enableAttributeArray() is called
+    on the \a location.  Otherwise the value specified with
+    setAttributeValue() for \a location will be used.
+
+    \sa setAttributeValue(), setUniformValue(), enableAttributeArray()
+    \sa disableAttributeArray()
+*/
+void QGLShaderProgram::setAttributeArray
+    (int location, const GLfloat *values, int tupleSize, int stride)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1) {
+        glVertexAttribPointer(location, tupleSize, GL_FLOAT, GL_FALSE,
+                              stride, values);
+    }
+}
+
+/*!
+    Sets an array of 2D vertex \a values on the attribute at \a location
+    in this shader program.  The \a stride indicates the number of bytes
+    between vertices.  A default \a stride value of zero indicates that
+    the vertices are densely packed in \a values.
+
+    The array will become active when enableAttributeArray() is called
+    on the \a location.  Otherwise the value specified with
+    setAttributeValue() for \a location will be used.
+
+    \sa setAttributeValue(), setUniformValue(), enableAttributeArray()
+    \sa disableAttributeArray()
+*/
+void QGLShaderProgram::setAttributeArray
+        (int location, const QVector2D *values, int stride)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1) {
+        glVertexAttribPointer(location, 2, GL_FLOAT, GL_FALSE,
+                              stride, values);
+    }
+}
+
+/*!
+    Sets an array of 3D vertex \a values on the attribute at \a location
+    in this shader program.  The \a stride indicates the number of bytes
+    between vertices.  A default \a stride value of zero indicates that
+    the vertices are densely packed in \a values.
+
+    The array will become active when enableAttributeArray() is called
+    on the \a location.  Otherwise the value specified with
+    setAttributeValue() for \a location will be used.
+
+    \sa setAttributeValue(), setUniformValue(), enableAttributeArray()
+    \sa disableAttributeArray()
+*/
+void QGLShaderProgram::setAttributeArray
+        (int location, const QVector3D *values, int stride)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1) {
+        glVertexAttribPointer(location, 3, GL_FLOAT, GL_FALSE,
+                              stride, values);
+    }
+}
+
+/*!
+    Sets an array of 4D vertex \a values on the attribute at \a location
+    in this shader program.  The \a stride indicates the number of bytes
+    between vertices.  A default \a stride value of zero indicates that
+    the vertices are densely packed in \a values.
+
+    The array will become active when enableAttributeArray() is called
+    on the \a location.  Otherwise the value specified with
+    setAttributeValue() for \a location will be used.
+
+    \sa setAttributeValue(), setUniformValue(), enableAttributeArray()
+    \sa disableAttributeArray()
+*/
+void QGLShaderProgram::setAttributeArray
+        (int location, const QVector4D *values, int stride)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1) {
+        glVertexAttribPointer(location, 4, GL_FLOAT, GL_FALSE,
+                              stride, values);
+    }
+}
+
+/*!
+    Sets an array of vertex \a values on the attribute at \a location
+    in this shader program.  The \a stride indicates the number of bytes
+    between vertices.  A default \a stride value of zero indicates that
+    the vertices are densely packed in \a values.
+
+    The \a type indicates the type of elements in the \a values array,
+    usually \c{GL_FLOAT}, \c{GL_UNSIGNED_BYTE}, etc.  The \a tupleSize
+    indicates the number of components per vertex: 1, 2, 3, or 4.
+
+    The array will become active when enableAttributeArray() is called
+    on the \a location.  Otherwise the value specified with
+    setAttributeValue() for \a location will be used.
+
+    The setAttributeBuffer() function can be used to set the attribute
+    array to an offset within a vertex buffer.
+
+    \sa setAttributeValue(), setUniformValue(), enableAttributeArray()
+    \sa disableAttributeArray(), setAttributeBuffer()
+    \since 4.7
+*/
+void QGLShaderProgram::setAttributeArray
+    (int location, GLenum type, const void *values, int tupleSize, int stride)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1) {
+        glVertexAttribPointer(location, tupleSize, type, GL_TRUE,
+                              stride, values);
+    }
+}
+
+/*!
+    \overload
+
+    Sets an array of vertex \a values on the attribute called \a name
+    in this shader program.  The \a tupleSize indicates the number of
+    components per vertex (1, 2, 3, or 4), and the \a stride indicates
+    the number of bytes between vertices.  A default \a stride value
+    of zero indicates that the vertices are densely packed in \a values.
+
+    The array will become active when enableAttributeArray() is called
+    on \a name.  Otherwise the value specified with setAttributeValue()
+    for \a name will be used.
+
+    \sa setAttributeValue(), setUniformValue(), enableAttributeArray()
+    \sa disableAttributeArray()
+*/
+void QGLShaderProgram::setAttributeArray
+    (const char *name, const GLfloat *values, int tupleSize, int stride)
+{
+    setAttributeArray(attributeLocation(name), values, tupleSize, stride);
+}
+
+/*!
+    \overload
+
+    Sets an array of 2D vertex \a values on the attribute called \a name
+    in this shader program.  The \a stride indicates the number of bytes
+    between vertices.  A default \a stride value of zero indicates that
+    the vertices are densely packed in \a values.
+
+    The array will become active when enableAttributeArray() is called
+    on \a name.  Otherwise the value specified with setAttributeValue()
+    for \a name will be used.
+
+    \sa setAttributeValue(), setUniformValue(), enableAttributeArray()
+    \sa disableAttributeArray()
+*/
+void QGLShaderProgram::setAttributeArray
+        (const char *name, const QVector2D *values, int stride)
+{
+    setAttributeArray(attributeLocation(name), values, stride);
+}
+
+/*!
+    \overload
+
+    Sets an array of 3D vertex \a values on the attribute called \a name
+    in this shader program.  The \a stride indicates the number of bytes
+    between vertices.  A default \a stride value of zero indicates that
+    the vertices are densely packed in \a values.
+
+    The array will become active when enableAttributeArray() is called
+    on \a name.  Otherwise the value specified with setAttributeValue()
+    for \a name will be used.
+
+    \sa setAttributeValue(), setUniformValue(), enableAttributeArray()
+    \sa disableAttributeArray()
+*/
+void QGLShaderProgram::setAttributeArray
+        (const char *name, const QVector3D *values, int stride)
+{
+    setAttributeArray(attributeLocation(name), values, stride);
+}
+
+/*!
+    \overload
+
+    Sets an array of 4D vertex \a values on the attribute called \a name
+    in this shader program.  The \a stride indicates the number of bytes
+    between vertices.  A default \a stride value of zero indicates that
+    the vertices are densely packed in \a values.
+
+    The array will become active when enableAttributeArray() is called
+    on \a name.  Otherwise the value specified with setAttributeValue()
+    for \a name will be used.
+
+    \sa setAttributeValue(), setUniformValue(), enableAttributeArray()
+    \sa disableAttributeArray()
+*/
+void QGLShaderProgram::setAttributeArray
+        (const char *name, const QVector4D *values, int stride)
+{
+    setAttributeArray(attributeLocation(name), values, stride);
+}
+
+/*!
+    \overload
+
+    Sets an array of vertex \a values on the attribute called \a name
+    in this shader program.  The \a stride indicates the number of bytes
+    between vertices.  A default \a stride value of zero indicates that
+    the vertices are densely packed in \a values.
+
+    The \a type indicates the type of elements in the \a values array,
+    usually \c{GL_FLOAT}, \c{GL_UNSIGNED_BYTE}, etc.  The \a tupleSize
+    indicates the number of components per vertex: 1, 2, 3, or 4.
+
+    The array will become active when enableAttributeArray() is called
+    on the \a name.  Otherwise the value specified with
+    setAttributeValue() for \a name will be used.
+
+    The setAttributeBuffer() function can be used to set the attribute
+    array to an offset within a vertex buffer.
+
+    \sa setAttributeValue(), setUniformValue(), enableAttributeArray()
+    \sa disableAttributeArray(), setAttributeBuffer()
+    \since 4.7
+*/
+void QGLShaderProgram::setAttributeArray
+    (const char *name, GLenum type, const void *values, int tupleSize, int stride)
+{
+    setAttributeArray(attributeLocation(name), type, values, tupleSize, stride);
+}
+
+/*!
+    Sets an array of vertex values on the attribute at \a location in
+    this shader program, starting at a specific \a offset in the
+    currently bound vertex buffer.  The \a stride indicates the number
+    of bytes between vertices.  A default \a stride value of zero
+    indicates that the vertices are densely packed in the value array.
+
+    The \a type indicates the type of elements in the vertex value
+    array, usually \c{GL_FLOAT}, \c{GL_UNSIGNED_BYTE}, etc.  The \a
+    tupleSize indicates the number of components per vertex: 1, 2, 3,
+    or 4.
+
+    The array will become active when enableAttributeArray() is called
+    on the \a location.  Otherwise the value specified with
+    setAttributeValue() for \a location will be used.
+
+    \sa setAttributeArray()
+    \since 4.7
+*/
+void QGLShaderProgram::setAttributeBuffer
+    (int location, GLenum type, int offset, int tupleSize, int stride)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1) {
+        glVertexAttribPointer(location, tupleSize, type, GL_TRUE, stride,
+                              reinterpret_cast<const void *>(offset));
+    }
+}
+
+/*!
+    \overload
+
+    Sets an array of vertex values on the attribute called \a name
+    in this shader program, starting at a specific \a offset in the
+    currently bound vertex buffer.  The \a stride indicates the number
+    of bytes between vertices.  A default \a stride value of zero
+    indicates that the vertices are densely packed in the value array.
+
+    The \a type indicates the type of elements in the vertex value
+    array, usually \c{GL_FLOAT}, \c{GL_UNSIGNED_BYTE}, etc.  The \a
+    tupleSize indicates the number of components per vertex: 1, 2, 3,
+    or 4.
+
+    The array will become active when enableAttributeArray() is called
+    on the \a name.  Otherwise the value specified with
+    setAttributeValue() for \a name will be used.
+
+    \sa setAttributeArray()
+    \since 4.7
+*/
+void QGLShaderProgram::setAttributeBuffer
+    (const char *name, GLenum type, int offset, int tupleSize, int stride)
+{
+    setAttributeBuffer(attributeLocation(name), type, offset, tupleSize, stride);
+}
+
+/*!
+    Enables the vertex array at \a location in this shader program
+    so that the value set by setAttributeArray() on \a location
+    will be used by the shader program.
+
+    \sa disableAttributeArray(), setAttributeArray(), setAttributeValue()
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::enableAttributeArray(int location)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1)
+        glEnableVertexAttribArray(location);
+}
+
+/*!
+    \overload
+
+    Enables the vertex array called \a name in this shader program
+    so that the value set by setAttributeArray() on \a name
+    will be used by the shader program.
+
+    \sa disableAttributeArray(), setAttributeArray(), setAttributeValue()
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::enableAttributeArray(const char *name)
+{
+    enableAttributeArray(attributeLocation(name));
+}
+
+/*!
+    Disables the vertex array at \a location in this shader program
+    that was enabled by a previous call to enableAttributeArray().
+
+    \sa enableAttributeArray(), setAttributeArray(), setAttributeValue()
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::disableAttributeArray(int location)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1)
+        glDisableVertexAttribArray(location);
+}
+
+/*!
+    \overload
+
+    Disables the vertex array called \a name in this shader program
+    that was enabled by a previous call to enableAttributeArray().
+
+    \sa enableAttributeArray(), setAttributeArray(), setAttributeValue()
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::disableAttributeArray(const char *name)
+{
+    disableAttributeArray(attributeLocation(name));
+}
+
+/*!
+    Returns the location of the uniform variable \a name within this shader
+    program's parameter list.  Returns -1 if \a name is not a valid
+    uniform variable for this shader program.
+
+    \sa attributeLocation()
+*/
+int QGLShaderProgram::uniformLocation(const char *name) const
+{
+    Q_D(const QGLShaderProgram);
+    Q_UNUSED(d);
+    if (d->linked) {
+        return glGetUniformLocation(d->programGuard.id(), name);
+    } else {
+        qWarning() << "QGLShaderProgram::uniformLocation(" << name
+                   << "): shader program is not linked";
+        return -1;
+    }
+}
+
+/*!
+    \overload
+
+    Returns the location of the uniform variable \a name within this shader
+    program's parameter list.  Returns -1 if \a name is not a valid
+    uniform variable for this shader program.
+
+    \sa attributeLocation()
+*/
+int QGLShaderProgram::uniformLocation(const QByteArray& name) const
+{
+    return uniformLocation(name.constData());
+}
+
+/*!
+    \overload
+
+    Returns the location of the uniform variable \a name within this shader
+    program's parameter list.  Returns -1 if \a name is not a valid
+    uniform variable for this shader program.
+
+    \sa attributeLocation()
+*/
+int QGLShaderProgram::uniformLocation(const QString& name) const
+{
+    return uniformLocation(name.toLatin1().constData());
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context to \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, GLfloat value)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1)
+        glUniform1fv(location, 1, &value);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, GLfloat value)
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context to \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, GLint value)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1)
+        glUniform1i(location, value);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, GLint value)
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context to \a value.
+    This function should be used when setting sampler values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, GLuint value)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1)
+        glUniform1i(location, value);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to \a value.  This function should be used when setting sampler values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, GLuint value)
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context to
+    the 2D vector (\a x, \a y).
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, GLfloat x, GLfloat y)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1) {
+        GLfloat values[2] = {x, y};
+        glUniform2fv(location, 1, values);
+    }
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context to
+    the 2D vector (\a x, \a y).
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, GLfloat x, GLfloat y)
+{
+    setUniformValue(uniformLocation(name), x, y);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context to
+    the 3D vector (\a x, \a y, \a z).
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue
+        (int location, GLfloat x, GLfloat y, GLfloat z)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1) {
+        GLfloat values[3] = {x, y, z};
+        glUniform3fv(location, 1, values);
+    }
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context to
+    the 3D vector (\a x, \a y, \a z).
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue
+        (const char *name, GLfloat x, GLfloat y, GLfloat z)
+{
+    setUniformValue(uniformLocation(name), x, y, z);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context to
+    the 4D vector (\a x, \a y, \a z, \a w).
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue
+        (int location, GLfloat x, GLfloat y, GLfloat z, GLfloat w)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1) {
+        GLfloat values[4] = {x, y, z, w};
+        glUniform4fv(location, 1, values);
+    }
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context to
+    the 4D vector (\a x, \a y, \a z, \a w).
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue
+        (const char *name, GLfloat x, GLfloat y, GLfloat z, GLfloat w)
+{
+    setUniformValue(uniformLocation(name), x, y, z, w);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context to \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const QVector2D& value)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1)
+        glUniform2fv(location, 1, reinterpret_cast<const GLfloat *>(&value));
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const QVector2D& value)
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context to \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const QVector3D& value)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1)
+        glUniform3fv(location, 1, reinterpret_cast<const GLfloat *>(&value));
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const QVector3D& value)
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context to \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const QVector4D& value)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1)
+        glUniform4fv(location, 1, reinterpret_cast<const GLfloat *>(&value));
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const QVector4D& value)
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context to
+    the red, green, blue, and alpha components of \a color.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const QColor& color)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1) {
+        GLfloat values[4] = {GLfloat(color.redF()), GLfloat(color.greenF()),
+                             GLfloat(color.blueF()), GLfloat(color.alphaF())};
+        glUniform4fv(location, 1, values);
+    }
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context to
+    the red, green, blue, and alpha components of \a color.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const QColor& color)
+{
+    setUniformValue(uniformLocation(name), color);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context to
+    the x and y coordinates of \a point.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const QPoint& point)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1) {
+        GLfloat values[4] = {GLfloat(point.x()), GLfloat(point.y())};
+        glUniform2fv(location, 1, values);
+    }
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable associated with \a name in the current
+    context to the x and y coordinates of \a point.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const QPoint& point)
+{
+    setUniformValue(uniformLocation(name), point);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context to
+    the x and y coordinates of \a point.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const QPointF& point)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1) {
+        GLfloat values[4] = {GLfloat(point.x()), GLfloat(point.y())};
+        glUniform2fv(location, 1, values);
+    }
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable associated with \a name in the current
+    context to the x and y coordinates of \a point.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const QPointF& point)
+{
+    setUniformValue(uniformLocation(name), point);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context to
+    the width and height of the given \a size.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const QSize& size)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1) {
+        GLfloat values[4] = {GLfloat(size.width()), GLfloat(size.height())};
+        glUniform2fv(location, 1, values);
+    }
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable associated with \a name in the current
+    context to the width and height of the given \a size.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const QSize& size)
+{
+    setUniformValue(uniformLocation(name), size);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context to
+    the width and height of the given \a size.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const QSizeF& size)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1) {
+        GLfloat values[4] = {GLfloat(size.width()), GLfloat(size.height())};
+        glUniform2fv(location, 1, values);
+    }
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable associated with \a name in the current
+    context to the width and height of the given \a size.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const QSizeF& size)
+{
+    setUniformValue(uniformLocation(name), size);
+}
+
+// We have to repack matrices from qreal to GLfloat.
+#define setUniformMatrix(func,location,value,cols,rows) \
+    if (location == -1) \
+        return; \
+    if (sizeof(qreal) == sizeof(GLfloat)) { \
+        func(location, 1, GL_FALSE, \
+             reinterpret_cast<const GLfloat *>(value.constData())); \
+    } else { \
+        GLfloat mat[cols * rows]; \
+        const qreal *data = value.constData(); \
+        for (int i = 0; i < cols * rows; ++i) \
+            mat[i] = data[i]; \
+        func(location, 1, GL_FALSE, mat); \
+    }
+#if !defined(QT_OPENGL_ES_2)
+#define setUniformGenericMatrix(func,colfunc,location,value,cols,rows) \
+    if (location == -1) \
+        return; \
+    if (sizeof(qreal) == sizeof(GLfloat)) { \
+        const GLfloat *data = reinterpret_cast<const GLfloat *> \
+            (value.constData());  \
+        if (func) \
+            func(location, 1, GL_FALSE, data); \
+        else \
+            colfunc(location, cols, data); \
+    } else { \
+        GLfloat mat[cols * rows]; \
+        const qreal *data = value.constData(); \
+        for (int i = 0; i < cols * rows; ++i) \
+            mat[i] = data[i]; \
+        if (func) \
+            func(location, 1, GL_FALSE, mat); \
+        else \
+            colfunc(location, cols, mat); \
+    }
+#else
+#define setUniformGenericMatrix(func,colfunc,location,value,cols,rows) \
+    if (location == -1) \
+        return; \
+    if (sizeof(qreal) == sizeof(GLfloat)) { \
+        const GLfloat *data = reinterpret_cast<const GLfloat *> \
+            (value.constData());  \
+        colfunc(location, cols, data); \
+    } else { \
+        GLfloat mat[cols * rows]; \
+        const qreal *data = value.constData(); \
+        for (int i = 0; i < cols * rows; ++i) \
+            mat[i] = data[i]; \
+        colfunc(location, cols, mat); \
+    }
+#endif
+
+/*!
+    Sets the uniform variable at \a location in the current context
+    to a 2x2 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const QMatrix2x2& value)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    setUniformMatrix(glUniformMatrix2fv, location, value, 2, 2);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to a 2x2 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const QMatrix2x2& value)
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context
+    to a 2x3 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const QMatrix2x3& value)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    setUniformGenericMatrix
+        (glUniformMatrix2x3fv, glUniform3fv, location, value, 2, 3);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to a 2x3 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const QMatrix2x3& value)
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context
+    to a 2x4 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const QMatrix2x4& value)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    setUniformGenericMatrix
+        (glUniformMatrix2x4fv, glUniform4fv, location, value, 2, 4);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to a 2x4 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const QMatrix2x4& value)
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context
+    to a 3x2 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const QMatrix3x2& value)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    setUniformGenericMatrix
+        (glUniformMatrix3x2fv, glUniform2fv, location, value, 3, 2);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to a 3x2 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const QMatrix3x2& value)
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context
+    to a 3x3 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const QMatrix3x3& value)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    setUniformMatrix(glUniformMatrix3fv, location, value, 3, 3);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to a 3x3 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const QMatrix3x3& value)
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context
+    to a 3x4 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const QMatrix3x4& value)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    setUniformGenericMatrix
+        (glUniformMatrix3x4fv, glUniform4fv, location, value, 3, 4);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to a 3x4 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const QMatrix3x4& value)
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context
+    to a 4x2 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const QMatrix4x2& value)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    setUniformGenericMatrix
+        (glUniformMatrix4x2fv, glUniform2fv, location, value, 4, 2);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to a 4x2 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const QMatrix4x2& value)
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context
+    to a 4x3 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const QMatrix4x3& value)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    setUniformGenericMatrix
+        (glUniformMatrix4x3fv, glUniform3fv, location, value, 4, 3);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to a 4x3 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const QMatrix4x3& value)
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context
+    to a 4x4 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const QMatrix4x4& value)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    setUniformMatrix(glUniformMatrix4fv, location, value, 4, 4);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to a 4x4 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const QMatrix4x4& value)
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable at \a location in the current context
+    to a 2x2 matrix \a value.  The matrix elements must be specified
+    in column-major order.
+
+    \sa setAttributeValue()
+    \since 4.7
+*/
+void QGLShaderProgram::setUniformValue(int location, const GLfloat value[2][2])
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1)
+        glUniformMatrix2fv(location, 1, GL_FALSE, value[0]);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable at \a location in the current context
+    to a 3x3 matrix \a value.  The matrix elements must be specified
+    in column-major order.
+
+    \sa setAttributeValue()
+    \since 4.7
+*/
+void QGLShaderProgram::setUniformValue(int location, const GLfloat value[3][3])
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1)
+        glUniformMatrix3fv(location, 1, GL_FALSE, value[0]);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable at \a location in the current context
+    to a 4x4 matrix \a value.  The matrix elements must be specified
+    in column-major order.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const GLfloat value[4][4])
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1)
+        glUniformMatrix4fv(location, 1, GL_FALSE, value[0]);
+}
+
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to a 2x2 matrix \a value.  The matrix elements must be specified
+    in column-major order.
+
+    \sa setAttributeValue()
+    \since 4.7
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const GLfloat value[2][2])
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to a 3x3 matrix \a value.  The matrix elements must be specified
+    in column-major order.
+
+    \sa setAttributeValue()
+    \since 4.7
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const GLfloat value[3][3])
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to a 4x4 matrix \a value.  The matrix elements must be specified
+    in column-major order.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const GLfloat value[4][4])
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context to a
+    3x3 transformation matrix \a value that is specified as a QTransform value.
+
+    To set a QTransform value as a 4x4 matrix in a shader, use
+    \c{setUniformValue(location, QMatrix4x4(value))}.
+*/
+void QGLShaderProgram::setUniformValue(int location, const QTransform& value)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1) {
+        GLfloat mat[3][3] = {
+            {GLfloat(value.m11()), GLfloat(value.m12()), GLfloat(value.m13())},
+            {GLfloat(value.m21()), GLfloat(value.m22()), GLfloat(value.m23())},
+            {GLfloat(value.m31()), GLfloat(value.m32()), GLfloat(value.m33())}
+        };
+        glUniformMatrix3fv(location, 1, GL_FALSE, mat[0]);
+    }
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context to a
+    3x3 transformation matrix \a value that is specified as a QTransform value.
+
+    To set a QTransform value as a 4x4 matrix in a shader, use
+    \c{setUniformValue(name, QMatrix4x4(value))}.
+*/
+void QGLShaderProgram::setUniformValue
+        (const char *name, const QTransform& value)
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    Sets the uniform variable array at \a location in the current
+    context to the \a count elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(int location, const GLint *values, int count)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1)
+        glUniform1iv(location, count, values);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable array called \a name in the current
+    context to the \a count elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray
+        (const char *name, const GLint *values, int count)
+{
+    setUniformValueArray(uniformLocation(name), values, count);
+}
+
+/*!
+    Sets the uniform variable array at \a location in the current
+    context to the \a count elements of \a values.  This overload
+    should be used when setting an array of sampler values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(int location, const GLuint *values, int count)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1)
+        glUniform1iv(location, count, reinterpret_cast<const GLint *>(values));
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable array called \a name in the current
+    context to the \a count elements of \a values.  This overload
+    should be used when setting an array of sampler values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray
+        (const char *name, const GLuint *values, int count)
+{
+    setUniformValueArray(uniformLocation(name), values, count);
+}
+
+/*!
+    Sets the uniform variable array at \a location in the current
+    context to the \a count elements of \a values.  Each element
+    has \a tupleSize components.  The \a tupleSize must be 1, 2, 3, or 4.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(int location, const GLfloat *values, int count, int tupleSize)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1) {
+        if (tupleSize == 1)
+            glUniform1fv(location, count, values);
+        else if (tupleSize == 2)
+            glUniform2fv(location, count, values);
+        else if (tupleSize == 3)
+            glUniform3fv(location, count, values);
+        else if (tupleSize == 4)
+            glUniform4fv(location, count, values);
+        else
+            qWarning() << "QGLShaderProgram::setUniformValue: size" << tupleSize << "not supported";
+    }
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable array called \a name in the current
+    context to the \a count elements of \a values.  Each element
+    has \a tupleSize components.  The \a tupleSize must be 1, 2, 3, or 4.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray
+        (const char *name, const GLfloat *values, int count, int tupleSize)
+{
+    setUniformValueArray(uniformLocation(name), values, count, tupleSize);
+}
+
+/*!
+    Sets the uniform variable array at \a location in the current
+    context to the \a count 2D vector elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(int location, const QVector2D *values, int count)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1)
+        glUniform2fv(location, count, reinterpret_cast<const GLfloat *>(values));
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable array called \a name in the current
+    context to the \a count 2D vector elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(const char *name, const QVector2D *values, int count)
+{
+    setUniformValueArray(uniformLocation(name), values, count);
+}
+
+/*!
+    Sets the uniform variable array at \a location in the current
+    context to the \a count 3D vector elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(int location, const QVector3D *values, int count)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1)
+        glUniform3fv(location, count, reinterpret_cast<const GLfloat *>(values));
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable array called \a name in the current
+    context to the \a count 3D vector elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(const char *name, const QVector3D *values, int count)
+{
+    setUniformValueArray(uniformLocation(name), values, count);
+}
+
+/*!
+    Sets the uniform variable array at \a location in the current
+    context to the \a count 4D vector elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(int location, const QVector4D *values, int count)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1)
+        glUniform4fv(location, count, reinterpret_cast<const GLfloat *>(values));
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable array called \a name in the current
+    context to the \a count 4D vector elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(const char *name, const QVector4D *values, int count)
+{
+    setUniformValueArray(uniformLocation(name), values, count);
+}
+
+// We have to repack matrix arrays from qreal to GLfloat.
+#define setUniformMatrixArray(func,location,values,count,type,cols,rows) \
+    if (location == -1 || count <= 0) \
+        return; \
+    if (sizeof(type) == sizeof(GLfloat) * cols * rows) { \
+        func(location, count, GL_FALSE, \
+             reinterpret_cast<const GLfloat *>(values[0].constData())); \
+    } else { \
+        QVarLengthArray<GLfloat> temp(cols * rows * count); \
+        for (int index = 0; index < count; ++index) { \
+            for (int index2 = 0; index2 < (cols * rows); ++index2) { \
+                temp.data()[cols * rows * index + index2] = \
+                    values[index].constData()[index2]; \
+            } \
+        } \
+        func(location, count, GL_FALSE, temp.constData()); \
+    }
+#if !defined(QT_OPENGL_ES_2)
+#define setUniformGenericMatrixArray(func,colfunc,location,values,count,type,cols,rows) \
+    if (location == -1 || count <= 0) \
+        return; \
+    if (sizeof(type) == sizeof(GLfloat) * cols * rows) { \
+        const GLfloat *data = reinterpret_cast<const GLfloat *> \
+            (values[0].constData());  \
+        if (func) \
+            func(location, count, GL_FALSE, data); \
+        else \
+            colfunc(location, count * cols, data); \
+    } else { \
+        QVarLengthArray<GLfloat> temp(cols * rows * count); \
+        for (int index = 0; index < count; ++index) { \
+            for (int index2 = 0; index2 < (cols * rows); ++index2) { \
+                temp.data()[cols * rows * index + index2] = \
+                    values[index].constData()[index2]; \
+            } \
+        } \
+        if (func) \
+            func(location, count, GL_FALSE, temp.constData()); \
+        else \
+            colfunc(location, count * cols, temp.constData()); \
+    }
+#else
+#define setUniformGenericMatrixArray(func,colfunc,location,values,count,type,cols,rows) \
+    if (location == -1 || count <= 0) \
+        return; \
+    if (sizeof(type) == sizeof(GLfloat) * cols * rows) { \
+        const GLfloat *data = reinterpret_cast<const GLfloat *> \
+            (values[0].constData());  \
+        colfunc(location, count * cols, data); \
+    } else { \
+        QVarLengthArray<GLfloat> temp(cols * rows * count); \
+        for (int index = 0; index < count; ++index) { \
+            for (int index2 = 0; index2 < (cols * rows); ++index2) { \
+                temp.data()[cols * rows * index + index2] = \
+                    values[index].constData()[index2]; \
+            } \
+        } \
+        colfunc(location, count * cols, temp.constData()); \
+    }
+#endif
+
+/*!
+    Sets the uniform variable array at \a location in the current
+    context to the \a count 2x2 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(int location, const QMatrix2x2 *values, int count)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    setUniformMatrixArray
+        (glUniformMatrix2fv, location, values, count, QMatrix2x2, 2, 2);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable array called \a name in the current
+    context to the \a count 2x2 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(const char *name, const QMatrix2x2 *values, int count)
+{
+    setUniformValueArray(uniformLocation(name), values, count);
+}
+
+/*!
+    Sets the uniform variable array at \a location in the current
+    context to the \a count 2x3 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(int location, const QMatrix2x3 *values, int count)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    setUniformGenericMatrixArray
+        (glUniformMatrix2x3fv, glUniform3fv, location, values, count,
+         QMatrix2x3, 2, 3);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable array called \a name in the current
+    context to the \a count 2x3 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(const char *name, const QMatrix2x3 *values, int count)
+{
+    setUniformValueArray(uniformLocation(name), values, count);
+}
+
+/*!
+    Sets the uniform variable array at \a location in the current
+    context to the \a count 2x4 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(int location, const QMatrix2x4 *values, int count)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    setUniformGenericMatrixArray
+        (glUniformMatrix2x4fv, glUniform4fv, location, values, count,
+         QMatrix2x4, 2, 4);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable array called \a name in the current
+    context to the \a count 2x4 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(const char *name, const QMatrix2x4 *values, int count)
+{
+    setUniformValueArray(uniformLocation(name), values, count);
+}
+
+/*!
+    Sets the uniform variable array at \a location in the current
+    context to the \a count 3x2 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(int location, const QMatrix3x2 *values, int count)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    setUniformGenericMatrixArray
+        (glUniformMatrix3x2fv, glUniform2fv, location, values, count,
+         QMatrix3x2, 3, 2);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable array called \a name in the current
+    context to the \a count 3x2 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(const char *name, const QMatrix3x2 *values, int count)
+{
+    setUniformValueArray(uniformLocation(name), values, count);
+}
+
+/*!
+    Sets the uniform variable array at \a location in the current
+    context to the \a count 3x3 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(int location, const QMatrix3x3 *values, int count)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    setUniformMatrixArray
+        (glUniformMatrix3fv, location, values, count, QMatrix3x3, 3, 3);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable array called \a name in the current
+    context to the \a count 3x3 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(const char *name, const QMatrix3x3 *values, int count)
+{
+    setUniformValueArray(uniformLocation(name), values, count);
+}
+
+/*!
+    Sets the uniform variable array at \a location in the current
+    context to the \a count 3x4 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(int location, const QMatrix3x4 *values, int count)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    setUniformGenericMatrixArray
+        (glUniformMatrix3x4fv, glUniform4fv, location, values, count,
+         QMatrix3x4, 3, 4);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable array called \a name in the current
+    context to the \a count 3x4 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(const char *name, const QMatrix3x4 *values, int count)
+{
+    setUniformValueArray(uniformLocation(name), values, count);
+}
+
+/*!
+    Sets the uniform variable array at \a location in the current
+    context to the \a count 4x2 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(int location, const QMatrix4x2 *values, int count)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    setUniformGenericMatrixArray
+        (glUniformMatrix4x2fv, glUniform2fv, location, values, count,
+         QMatrix4x2, 4, 2);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable array called \a name in the current
+    context to the \a count 4x2 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(const char *name, const QMatrix4x2 *values, int count)
+{
+    setUniformValueArray(uniformLocation(name), values, count);
+}
+
+/*!
+    Sets the uniform variable array at \a location in the current
+    context to the \a count 4x3 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(int location, const QMatrix4x3 *values, int count)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    setUniformGenericMatrixArray
+        (glUniformMatrix4x3fv, glUniform3fv, location, values, count,
+         QMatrix4x3, 4, 3);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable array called \a name in the current
+    context to the \a count 4x3 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(const char *name, const QMatrix4x3 *values, int count)
+{
+    setUniformValueArray(uniformLocation(name), values, count);
+}
+
+/*!
+    Sets the uniform variable array at \a location in the current
+    context to the \a count 4x4 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(int location, const QMatrix4x4 *values, int count)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    setUniformMatrixArray
+        (glUniformMatrix4fv, location, values, count, QMatrix4x4, 4, 4);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable array called \a name in the current
+    context to the \a count 4x4 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(const char *name, const QMatrix4x4 *values, int count)
+{
+    setUniformValueArray(uniformLocation(name), values, count);
+}
+
+#undef ctx
+
+/*!
+    Returns the hardware limit for how many vertices a geometry shader
+    can output.
+
+    \since 4.7
+
+    \sa setGeometryOutputVertexCount()
+*/
+int QGLShaderProgram::maxGeometryOutputVertices() const
+{
+    GLint n;
+    glGetIntegerv(GL_MAX_GEOMETRY_OUTPUT_VERTICES_EXT, &n);
+    return n;
+}
+
+/*!
+    Sets the maximum number of vertices the current geometry shader
+    program will produce, if active, to \a count.
+
+    \since 4.7
+
+    This parameter takes effect the next time the program is linked.
+*/
+void QGLShaderProgram::setGeometryOutputVertexCount(int count)
+{
+#ifndef QT_NO_DEBUG
+    int max = maxGeometryOutputVertices();
+    if (count > max) {
+        qWarning("QGLShaderProgram::setGeometryOutputVertexCount: count: %d higher than maximum: %d",
+                 count, max);
+    }
+#endif
+    d_func()->geometryVertexCount = count;
+}
+
+
+/*!
+    Returns the maximum number of vertices the current geometry shader
+    program will produce, if active.
+
+    \since 4.7
+
+    This parameter takes effect the ntext time the program is linked.
+*/
+int QGLShaderProgram::geometryOutputVertexCount() const
+{
+    return d_func()->geometryVertexCount;
+}
+
+
+/*!
+    Sets the input type from \a inputType.
+
+    This parameter takes effect the next time the program is linked.
+*/
+void QGLShaderProgram::setGeometryInputType(GLenum inputType)
+{
+    d_func()->geometryInputType = inputType;
+}
+
+
+/*!
+    Returns the geometry shader input type, if active.
+
+    This parameter takes effect the next time the program is linked.
+
+    \since 4.7
+ */
+
+GLenum QGLShaderProgram::geometryInputType() const
+{
+    return d_func()->geometryInputType;
+}
+
+
+/*!
+    Sets the output type from the geometry shader, if active, to
+    \a outputType.
+
+    This parameter takes effect the next time the program is linked.
+
+    \since 4.7
+*/
+void QGLShaderProgram::setGeometryOutputType(GLenum outputType)
+{
+    d_func()->geometryOutputType = outputType;
+}
+
+
+/*!
+    Returns the geometry shader output type, if active.
+
+    This parameter takes effect the next time the program is linked.
+
+    \since 4.7
+ */
+GLenum QGLShaderProgram::geometryOutputType() const
+{
+    return d_func()->geometryOutputType;
+}
+
+
+/*!
+    Returns true if shader programs written in the OpenGL Shading
+    Language (GLSL) are supported on this system; false otherwise.
+
+    The \a context is used to resolve the GLSL extensions.
+    If \a context is null, then QGLContext::currentContext() is used.
+*/
+bool QGLShaderProgram::hasOpenGLShaderPrograms(const QGLContext *context)
+{
+#if !defined(QT_OPENGL_ES_2)
+    if (!context)
+        context = QGLContext::currentContext();
+    if (!context)
+        return false;
+    return qt_resolve_glsl_extensions(const_cast<QGLContext *>(context));
+#else
+    Q_UNUSED(context);
+    return true;
+#endif
+}
+
+/*!
+    \internal
+*/
+void QGLShaderProgram::shaderDestroyed()
+{
+    Q_D(QGLShaderProgram);
+    QGLShader *shader = qobject_cast<QGLShader *>(sender());
+    if (shader && !d->removingShaders)
+        removeShader(shader);
+}
+
+
+#undef ctx
+#undef context
+
+/*!
+    Returns true if shader programs of type \a type are supported on
+    this system; false otherwise.
+
+    The \a context is used to resolve the GLSL extensions.
+    If \a context is null, then QGLContext::currentContext() is used.
+
+    \since 4.7
+*/
+bool QGLShader::hasOpenGLShaders(ShaderType type, const QGLContext *context)
+{
+    if (!context)
+        context = QGLContext::currentContext();
+    if (!context)
+        return false;
+
+    if ((type & ~(Geometry | Vertex | Fragment)) || type == 0)
+        return false;
+
+    bool resolved = qt_resolve_glsl_extensions(const_cast<QGLContext *>(context));
+    if (!resolved)
+        return false;
+
+    if ((type & Geometry) && !QByteArray((const char *) glGetString(GL_EXTENSIONS)).contains("GL_EXT_geometry_shader4"))
+        return false;
+
+    return true;
+}
+
+
+
+#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
+/*! \internal */
+void QGLShaderProgram::setAttributeArray
+    (int location, QMacCompatGLenum type, const void *values, int tupleSize, int stride)
+{
+    setAttributeArray(location, GLenum(type), values, tupleSize, stride);
+}
+
+/*! \internal */
+void QGLShaderProgram::setAttributeArray
+    (const char *name, QMacCompatGLenum type, const void *values, int tupleSize, int stride)
+{
+    setAttributeArray(name, GLenum(type), values, tupleSize, stride);
+}
+
+/*! \internal */
+void QGLShaderProgram::setAttributeBuffer
+    (int location, QMacCompatGLenum type, int offset, int tupleSize, int stride)
+{
+    setAttributeBuffer(location, GLenum(type), offset, tupleSize, stride);
+}
+
+/*! \internal */
+void QGLShaderProgram::setAttributeBuffer
+    (const char *name, QMacCompatGLenum type, int offset, int tupleSize, int stride)
+{
+    setAttributeBuffer(name, GLenum(type), offset, tupleSize, stride);
+}
+
+/*! \internal */
+void QGLShaderProgram::setUniformValue(int location, QMacCompatGLint value)
+{
+    setUniformValue(location, GLint(value));
+}
+
+/*! \internal */
+void QGLShaderProgram::setUniformValue(int location, QMacCompatGLuint value)
+{
+    setUniformValue(location, GLuint(value));
+}
+
+/*! \internal */
+void QGLShaderProgram::setUniformValue(const char *name, QMacCompatGLint value)
+{
+    setUniformValue(name, GLint(value));
+}
+
+/*! \internal */
+void QGLShaderProgram::setUniformValue(const char *name, QMacCompatGLuint value)
+{
+    setUniformValue(name, GLuint(value));
+}
+
+/*! \internal */
+void QGLShaderProgram::setUniformValueArray(int location, const QMacCompatGLint *values, int count)
+{
+    setUniformValueArray(location, (const GLint *)values, count);
+}
+
+/*! \internal */
+void QGLShaderProgram::setUniformValueArray(int location, const QMacCompatGLuint *values, int count)
+{
+    setUniformValueArray(location, (const GLuint *)values, count);
+}
+
+/*! \internal */
+void QGLShaderProgram::setUniformValueArray(const char *name, const QMacCompatGLint *values, int count)
+{
+    setUniformValueArray(name, (const GLint *)values, count);
+}
+
+/*! \internal */
+void QGLShaderProgram::setUniformValueArray(const char *name, const QMacCompatGLuint *values, int count)
+{
+    setUniformValueArray(name, (const GLuint *)values, count);
+}
+#endif
+
+#endif // !defined(QT_OPENGL_ES_1)
+
+QT_END_NAMESPACE
diff --git a/src/opengl/qglshaderprogram.h b/src/opengl/qglshaderprogram.h
new file mode 100644
index 0000000000..83a4f04db0
--- /dev/null
+++ b/src/opengl/qglshaderprogram.h
@@ -0,0 +1,344 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QGLSHADERPROGRAM_H
+#define QGLSHADERPROGRAM_H
+
+#include <QtOpenGL/qgl.h>
+#include <QtGui/qvector2d.h>
+#include <QtGui/qvector3d.h>
+#include <QtGui/qvector4d.h>
+#include <QtGui/qmatrix4x4.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(OpenGL)
+
+#if !defined(QT_OPENGL_ES_1)
+
+class QGLShaderProgram;
+class QGLShaderPrivate;
+
+class Q_OPENGL_EXPORT QGLShader : public QObject
+{
+    Q_OBJECT
+public:
+    enum ShaderTypeBit
+    {
+        Vertex          = 0x0001,
+        Fragment        = 0x0002,
+        Geometry        = 0x0004
+    };
+    Q_DECLARE_FLAGS(ShaderType, ShaderTypeBit)
+
+    explicit QGLShader(QGLShader::ShaderType type, QObject *parent = 0);
+    QGLShader(QGLShader::ShaderType type, const QGLContext *context, QObject *parent = 0);
+    virtual ~QGLShader();
+
+    QGLShader::ShaderType shaderType() const;
+
+    bool compileSourceCode(const char *source);
+    bool compileSourceCode(const QByteArray& source);
+    bool compileSourceCode(const QString& source);
+    bool compileSourceFile(const QString& fileName);
+
+    QByteArray sourceCode() const;
+
+    bool isCompiled() const;
+    QString log() const;
+
+    GLuint shaderId() const;
+
+    static bool hasOpenGLShaders(ShaderType type, const QGLContext *context = 0);
+
+private:
+    friend class QGLShaderProgram;
+
+    Q_DISABLE_COPY(QGLShader)
+    Q_DECLARE_PRIVATE(QGLShader)
+};
+
+Q_DECLARE_OPERATORS_FOR_FLAGS(QGLShader::ShaderType)
+
+
+class QGLShaderProgramPrivate;
+
+#ifndef GL_EXT_geometry_shader4
+#  define GL_LINES_ADJACENCY_EXT 0xA
+#  define GL_LINE_STRIP_ADJACENCY_EXT 0xB
+#  define GL_TRIANGLES_ADJACENCY_EXT 0xC
+#  define GL_TRIANGLE_STRIP_ADJACENCY_EXT 0xD
+#endif
+
+
+class Q_OPENGL_EXPORT QGLShaderProgram : public QObject
+{
+    Q_OBJECT
+public:
+    explicit QGLShaderProgram(QObject *parent = 0);
+    explicit QGLShaderProgram(const QGLContext *context, QObject *parent = 0);
+    virtual ~QGLShaderProgram();
+
+    bool addShader(QGLShader *shader);
+    void removeShader(QGLShader *shader);
+    QList<QGLShader *> shaders() const;
+
+    bool addShaderFromSourceCode(QGLShader::ShaderType type, const char *source);
+    bool addShaderFromSourceCode(QGLShader::ShaderType type, const QByteArray& source);
+    bool addShaderFromSourceCode(QGLShader::ShaderType type, const QString& source);
+    bool addShaderFromSourceFile(QGLShader::ShaderType type, const QString& fileName);
+
+    void removeAllShaders();
+
+    virtual bool link();
+    bool isLinked() const;
+    QString log() const;
+
+    bool bind();
+    void release();
+
+    GLuint programId() const;
+
+    int maxGeometryOutputVertices() const;
+
+    void setGeometryOutputVertexCount(int count);
+    int geometryOutputVertexCount() const;
+
+    void setGeometryInputType(GLenum inputType);
+    GLenum geometryInputType() const;
+
+    void setGeometryOutputType(GLenum outputType);
+    GLenum geometryOutputType() const;
+
+    void bindAttributeLocation(const char *name, int location);
+    void bindAttributeLocation(const QByteArray& name, int location);
+    void bindAttributeLocation(const QString& name, int location);
+
+    int attributeLocation(const char *name) const;
+    int attributeLocation(const QByteArray& name) const;
+    int attributeLocation(const QString& name) const;
+
+    void setAttributeValue(int location, GLfloat value);
+    void setAttributeValue(int location, GLfloat x, GLfloat y);
+    void setAttributeValue(int location, GLfloat x, GLfloat y, GLfloat z);
+    void setAttributeValue(int location, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
+    void setAttributeValue(int location, const QVector2D& value);
+    void setAttributeValue(int location, const QVector3D& value);
+    void setAttributeValue(int location, const QVector4D& value);
+    void setAttributeValue(int location, const QColor& value);
+    void setAttributeValue(int location, const GLfloat *values, int columns, int rows);
+
+    void setAttributeValue(const char *name, GLfloat value);
+    void setAttributeValue(const char *name, GLfloat x, GLfloat y);
+    void setAttributeValue(const char *name, GLfloat x, GLfloat y, GLfloat z);
+    void setAttributeValue(const char *name, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
+    void setAttributeValue(const char *name, const QVector2D& value);
+    void setAttributeValue(const char *name, const QVector3D& value);
+    void setAttributeValue(const char *name, const QVector4D& value);
+    void setAttributeValue(const char *name, const QColor& value);
+    void setAttributeValue(const char *name, const GLfloat *values, int columns, int rows);
+
+    void setAttributeArray
+        (int location, const GLfloat *values, int tupleSize, int stride = 0);
+    void setAttributeArray
+        (int location, const QVector2D *values, int stride = 0);
+    void setAttributeArray
+        (int location, const QVector3D *values, int stride = 0);
+    void setAttributeArray
+        (int location, const QVector4D *values, int stride = 0);
+    void setAttributeArray
+        (int location, GLenum type, const void *values, int tupleSize, int stride = 0);
+    void setAttributeArray
+        (const char *name, const GLfloat *values, int tupleSize, int stride = 0);
+    void setAttributeArray
+        (const char *name, const QVector2D *values, int stride = 0);
+    void setAttributeArray
+        (const char *name, const QVector3D *values, int stride = 0);
+    void setAttributeArray
+        (const char *name, const QVector4D *values, int stride = 0);
+    void setAttributeArray
+        (const char *name, GLenum type, const void *values, int tupleSize, int stride = 0);
+
+    void setAttributeBuffer
+        (int location, GLenum type, int offset, int tupleSize, int stride = 0);
+    void setAttributeBuffer
+        (const char *name, GLenum type, int offset, int tupleSize, int stride = 0);
+
+#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
+    void setAttributeArray
+        (int location, QMacCompatGLenum type, const void *values, int tupleSize, int stride = 0);
+    void setAttributeArray
+        (const char *name, QMacCompatGLenum type, const void *values, int tupleSize, int stride = 0);
+    void setAttributeBuffer
+        (int location, QMacCompatGLenum type, int offset, int tupleSize, int stride = 0);
+    void setAttributeBuffer
+        (const char *name, QMacCompatGLenum type, int offset, int tupleSize, int stride = 0);
+#endif
+
+    void enableAttributeArray(int location);
+    void enableAttributeArray(const char *name);
+    void disableAttributeArray(int location);
+    void disableAttributeArray(const char *name);
+
+    int uniformLocation(const char *name) const;
+    int uniformLocation(const QByteArray& name) const;
+    int uniformLocation(const QString& name) const;
+
+#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
+    void setUniformValue(int location, QMacCompatGLint value);
+    void setUniformValue(int location, QMacCompatGLuint value);
+    void setUniformValue(const char *name, QMacCompatGLint value);
+    void setUniformValue(const char *name, QMacCompatGLuint value);
+    void setUniformValueArray(int location, const QMacCompatGLint *values, int count);
+    void setUniformValueArray(int location, const QMacCompatGLuint *values, int count);
+    void setUniformValueArray(const char *name, const QMacCompatGLint *values, int count);
+    void setUniformValueArray(const char *name, const QMacCompatGLuint *values, int count);
+#endif
+
+    void setUniformValue(int location, GLfloat value);
+    void setUniformValue(int location, GLint value);
+    void setUniformValue(int location, GLuint value);
+    void setUniformValue(int location, GLfloat x, GLfloat y);
+    void setUniformValue(int location, GLfloat x, GLfloat y, GLfloat z);
+    void setUniformValue(int location, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
+    void setUniformValue(int location, const QVector2D& value);
+    void setUniformValue(int location, const QVector3D& value);
+    void setUniformValue(int location, const QVector4D& value);
+    void setUniformValue(int location, const QColor& color);
+    void setUniformValue(int location, const QPoint& point);
+    void setUniformValue(int location, const QPointF& point);
+    void setUniformValue(int location, const QSize& size);
+    void setUniformValue(int location, const QSizeF& size);
+    void setUniformValue(int location, const QMatrix2x2& value);
+    void setUniformValue(int location, const QMatrix2x3& value);
+    void setUniformValue(int location, const QMatrix2x4& value);
+    void setUniformValue(int location, const QMatrix3x2& value);
+    void setUniformValue(int location, const QMatrix3x3& value);
+    void setUniformValue(int location, const QMatrix3x4& value);
+    void setUniformValue(int location, const QMatrix4x2& value);
+    void setUniformValue(int location, const QMatrix4x3& value);
+    void setUniformValue(int location, const QMatrix4x4& value);
+    void setUniformValue(int location, const GLfloat value[2][2]);
+    void setUniformValue(int location, const GLfloat value[3][3]);
+    void setUniformValue(int location, const GLfloat value[4][4]);
+    void setUniformValue(int location, const QTransform& value);
+
+    void setUniformValue(const char *name, GLfloat value);
+    void setUniformValue(const char *name, GLint value);
+    void setUniformValue(const char *name, GLuint value);
+    void setUniformValue(const char *name, GLfloat x, GLfloat y);
+    void setUniformValue(const char *name, GLfloat x, GLfloat y, GLfloat z);
+    void setUniformValue(const char *name, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
+    void setUniformValue(const char *name, const QVector2D& value);
+    void setUniformValue(const char *name, const QVector3D& value);
+    void setUniformValue(const char *name, const QVector4D& value);
+    void setUniformValue(const char *name, const QColor& color);
+    void setUniformValue(const char *name, const QPoint& point);
+    void setUniformValue(const char *name, const QPointF& point);
+    void setUniformValue(const char *name, const QSize& size);
+    void setUniformValue(const char *name, const QSizeF& size);
+    void setUniformValue(const char *name, const QMatrix2x2& value);
+    void setUniformValue(const char *name, const QMatrix2x3& value);
+    void setUniformValue(const char *name, const QMatrix2x4& value);
+    void setUniformValue(const char *name, const QMatrix3x2& value);
+    void setUniformValue(const char *name, const QMatrix3x3& value);
+    void setUniformValue(const char *name, const QMatrix3x4& value);
+    void setUniformValue(const char *name, const QMatrix4x2& value);
+    void setUniformValue(const char *name, const QMatrix4x3& value);
+    void setUniformValue(const char *name, const QMatrix4x4& value);
+    void setUniformValue(const char *name, const GLfloat value[2][2]);
+    void setUniformValue(const char *name, const GLfloat value[3][3]);
+    void setUniformValue(const char *name, const GLfloat value[4][4]);
+    void setUniformValue(const char *name, const QTransform& value);
+
+    void setUniformValueArray(int location, const GLfloat *values, int count, int tupleSize);
+    void setUniformValueArray(int location, const GLint *values, int count);
+    void setUniformValueArray(int location, const GLuint *values, int count);
+    void setUniformValueArray(int location, const QVector2D *values, int count);
+    void setUniformValueArray(int location, const QVector3D *values, int count);
+    void setUniformValueArray(int location, const QVector4D *values, int count);
+    void setUniformValueArray(int location, const QMatrix2x2 *values, int count);
+    void setUniformValueArray(int location, const QMatrix2x3 *values, int count);
+    void setUniformValueArray(int location, const QMatrix2x4 *values, int count);
+    void setUniformValueArray(int location, const QMatrix3x2 *values, int count);
+    void setUniformValueArray(int location, const QMatrix3x3 *values, int count);
+    void setUniformValueArray(int location, const QMatrix3x4 *values, int count);
+    void setUniformValueArray(int location, const QMatrix4x2 *values, int count);
+    void setUniformValueArray(int location, const QMatrix4x3 *values, int count);
+    void setUniformValueArray(int location, const QMatrix4x4 *values, int count);
+
+    void setUniformValueArray(const char *name, const GLfloat *values, int count, int tupleSize);
+    void setUniformValueArray(const char *name, const GLint *values, int count);
+    void setUniformValueArray(const char *name, const GLuint *values, int count);
+    void setUniformValueArray(const char *name, const QVector2D *values, int count);
+    void setUniformValueArray(const char *name, const QVector3D *values, int count);
+    void setUniformValueArray(const char *name, const QVector4D *values, int count);
+    void setUniformValueArray(const char *name, const QMatrix2x2 *values, int count);
+    void setUniformValueArray(const char *name, const QMatrix2x3 *values, int count);
+    void setUniformValueArray(const char *name, const QMatrix2x4 *values, int count);
+    void setUniformValueArray(const char *name, const QMatrix3x2 *values, int count);
+    void setUniformValueArray(const char *name, const QMatrix3x3 *values, int count);
+    void setUniformValueArray(const char *name, const QMatrix3x4 *values, int count);
+    void setUniformValueArray(const char *name, const QMatrix4x2 *values, int count);
+    void setUniformValueArray(const char *name, const QMatrix4x3 *values, int count);
+    void setUniformValueArray(const char *name, const QMatrix4x4 *values, int count);
+
+    static bool hasOpenGLShaderPrograms(const QGLContext *context = 0);
+
+private Q_SLOTS:
+    void shaderDestroyed();
+
+private:
+    Q_DISABLE_COPY(QGLShaderProgram)
+    Q_DECLARE_PRIVATE(QGLShaderProgram)
+
+    bool init();
+};
+
+#endif
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif
diff --git a/src/opengl/qgltexturepool.cpp b/src/opengl/qgltexturepool.cpp
new file mode 100644
index 0000000000..a5472ece7f
--- /dev/null
+++ b/src/opengl/qgltexturepool.cpp
@@ -0,0 +1,244 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenVG module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qgltexturepool_p.h"
+#include "qpixmapdata_gl_p.h"
+
+QT_BEGIN_NAMESPACE
+
+Q_OPENGL_EXPORT extern QGLWidget* qt_gl_share_widget();
+
+static QGLTexturePool *qt_gl_texture_pool = 0;
+
+class QGLTexturePoolPrivate
+{
+public:
+    QGLTexturePoolPrivate() : lruFirst(0), lruLast(0) {}
+
+    QGLPixmapData *lruFirst;
+    QGLPixmapData *lruLast;
+};
+
+QGLTexturePool::QGLTexturePool()
+    : d_ptr(new QGLTexturePoolPrivate())
+{
+}
+
+QGLTexturePool::~QGLTexturePool()
+{
+}
+
+QGLTexturePool *QGLTexturePool::instance()
+{
+    if (!qt_gl_texture_pool)
+        qt_gl_texture_pool = new QGLTexturePool();
+    return qt_gl_texture_pool;
+}
+
+GLuint QGLTexturePool::createTextureForPixmap(GLenum target,
+                                            GLint level,
+                                            GLint internalformat,
+                                            GLsizei width,
+                                            GLsizei height,
+                                            GLenum format,
+                                            GLenum type,
+                                            QGLPixmapData *data)
+{
+    GLuint texture;
+    glGenTextures(1, &texture);
+    glBindTexture(target, texture);
+    do {
+        glTexImage2D(target, level, internalformat, width, height, 0, format, type, 0);
+        GLenum error = glGetError();
+        if (error == GL_NO_ERROR) {
+            if (data)
+                moveToHeadOfLRU(data);
+            return texture;
+        } else if (error != GL_OUT_OF_MEMORY) {
+            qWarning("QGLTexturePool: cannot create temporary texture because of invalid params");
+            return 0;
+        }
+    } while (reclaimSpace(internalformat, width, height, format, type, data));
+    qWarning("QGLTexturePool: cannot reclaim sufficient space for a %dx%d pixmap",
+             width, height);
+    return 0;
+}
+
+bool QGLTexturePool::createPermanentTexture(GLuint texture,
+                                            GLenum target,
+                                            GLint level,
+                                            GLint internalformat,
+                                            GLsizei width,
+                                            GLsizei height,
+                                            GLenum format,
+                                            GLenum type,
+                                            const GLvoid *data)
+{
+    glBindTexture(target, texture);
+    do {
+        glTexImage2D(target, level, internalformat, width, height, 0, format, type, data);
+
+        GLenum error = glGetError();
+        if (error == GL_NO_ERROR) {
+            return true;
+        } else if (error != GL_OUT_OF_MEMORY) {
+            qWarning("QGLTexturePool: cannot create permanent texture because of invalid params");
+            return false;
+        }
+    } while (reclaimSpace(internalformat, width, height, format, type, 0));
+    qWarning("QGLTexturePool: cannot reclaim sufficient space for a %dx%d pixmap",
+             width, height);
+    return 0;
+}
+
+void QGLTexturePool::releaseTexture(QGLPixmapData *data, GLuint texture)
+{
+    // Very simple strategy at the moment: just destroy the texture.
+    if (data)
+        removeFromLRU(data);
+
+    QGLWidget *shareWidget = qt_gl_share_widget();
+    if (shareWidget) {
+        QGLShareContextScope ctx(shareWidget->context());
+        glDeleteTextures(1, &texture);
+    }
+}
+
+void QGLTexturePool::useTexture(QGLPixmapData *data)
+{
+    moveToHeadOfLRU(data);
+}
+
+void QGLTexturePool::detachTexture(QGLPixmapData *data)
+{
+    removeFromLRU(data);
+}
+
+bool QGLTexturePool::reclaimSpace(GLint internalformat,
+                                    GLsizei width,
+                                    GLsizei height,
+                                    GLenum format,
+                                    GLenum type,
+                                    QGLPixmapData *data)
+{
+    Q_UNUSED(internalformat);   // For future use in picking the best texture to eject.
+    Q_UNUSED(width);
+    Q_UNUSED(height);
+    Q_UNUSED(format);
+    Q_UNUSED(type);
+
+    bool succeeded = false;
+    bool wasInLRU = false;
+    if (data) {
+        wasInLRU = data->inLRU;
+        moveToHeadOfLRU(data);
+    }
+
+    QGLPixmapData *lrudata = pixmapLRU();
+    if (lrudata && lrudata != data) {
+        lrudata->reclaimTexture();
+        succeeded = true;
+    }
+
+    if (data && !wasInLRU)
+        removeFromLRU(data);
+
+    return succeeded;
+}
+
+void QGLTexturePool::hibernate()
+{
+    Q_D(QGLTexturePool);
+    QGLPixmapData *pd = d->lruLast;
+    while (pd) {
+        QGLPixmapData *prevLRU = pd->prevLRU;
+        pd->inTexturePool = false;
+        pd->inLRU = false;
+        pd->nextLRU = 0;
+        pd->prevLRU = 0;
+        pd->hibernate();
+        pd = prevLRU;
+    }
+    d->lruFirst = 0;
+    d->lruLast = 0;
+}
+
+void QGLTexturePool::moveToHeadOfLRU(QGLPixmapData *data)
+{
+    Q_D(QGLTexturePool);
+    if (data->inLRU) {
+        if (!data->prevLRU)
+            return;     // Already at the head of the list.
+        removeFromLRU(data);
+    }
+    data->inLRU = true;
+    data->nextLRU = d->lruFirst;
+    data->prevLRU = 0;
+    if (d->lruFirst)
+        d->lruFirst->prevLRU = data;
+    else
+        d->lruLast = data;
+    d->lruFirst = data;
+}
+
+void QGLTexturePool::removeFromLRU(QGLPixmapData *data)
+{
+    Q_D(QGLTexturePool);
+    if (!data->inLRU)
+        return;
+    if (data->nextLRU)
+        data->nextLRU->prevLRU = data->prevLRU;
+    else
+        d->lruLast = data->prevLRU;
+    if (data->prevLRU)
+        data->prevLRU->nextLRU = data->nextLRU;
+    else
+        d->lruFirst = data->nextLRU;
+    data->inLRU = false;
+}
+
+QGLPixmapData *QGLTexturePool::pixmapLRU()
+{
+    Q_D(QGLTexturePool);
+    return d->lruLast;
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/qgltexturepool_p.h b/src/opengl/qgltexturepool_p.h
new file mode 100644
index 0000000000..8b6f726316
--- /dev/null
+++ b/src/opengl/qgltexturepool_p.h
@@ -0,0 +1,147 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenVG module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QGLTEXTUREPOOL_P_H
+#define QGLTEXTUREPOOL_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of other Qt classes.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qgl.h"
+#include <QtCore/qscopedpointer.h>
+
+QT_BEGIN_NAMESPACE
+
+class QGLPixmapData;
+class QGLTexturePoolPrivate;
+
+class QGLTexturePool
+{
+public:
+    QGLTexturePool();
+    virtual ~QGLTexturePool();
+
+    static QGLTexturePool *instance();
+
+    // Create a new texture with the specified parameters and associate
+    // it with "data".  The QGLPixmapData will be notified when the
+    // texture needs to be reclaimed by the pool.
+    //
+    // This function will call reclaimSpace() when texture creation fails.
+    GLuint createTextureForPixmap(GLenum target,
+                                            GLint level,
+                                            GLint internalformat,
+                                            GLsizei width,
+                                            GLsizei height,
+                                            GLenum format,
+                                            GLenum type,
+                                            QGLPixmapData *data);
+
+    // Create a permanent texture with the specified parameters.
+    // If there is insufficient space for the texture,
+    // then this function will call reclaimSpace() and try again.
+    //
+    // The caller is responsible for calling glDeleteTextures()
+    // when it no longer needs the texture, as the texture is not
+    // recorded in the texture pool.
+    bool createPermanentTexture(GLuint texture,
+                                            GLenum target,
+                                            GLint level,
+                                            GLint internalformat,
+                                            GLsizei width,
+                                            GLsizei height,
+                                            GLenum format,
+                                            GLenum type,
+                                            const GLvoid *data);
+
+    // Release a texture that is no longer required.
+    void releaseTexture(QGLPixmapData *data, GLuint texture);
+
+    // Notify the pool that a QGLPixmapData object is using
+    // an texture again.  This allows the pool to move the texture
+    // within a least-recently-used list of QGLPixmapData objects.
+    void useTexture(QGLPixmapData *data);
+
+    // Notify the pool that the texture associated with a
+    // QGLPixmapData is being detached from the pool.  The caller
+    // will become responsible for calling glDeleteTextures().
+    void detachTexture(QGLPixmapData *data);
+
+    // Reclaim space for an image allocation with the specified parameters.
+    // Returns true if space was reclaimed, or false if there is no
+    // further space that can be reclaimed.  The "data" parameter
+    // indicates the pixmap that is trying to obtain space which should
+    // not itself be reclaimed.
+    bool reclaimSpace(GLint internalformat,
+                                GLsizei width,
+                                GLsizei height,
+                                GLenum format,
+                                GLenum type,
+                                QGLPixmapData *data);
+
+    // Hibernate the image pool because the context is about to be
+    // destroyed.  All textures left in the pool should be released.
+    void hibernate();
+
+protected:
+    // Helper functions for managing the LRU list of QGLPixmapData objects.
+    void moveToHeadOfLRU(QGLPixmapData *data);
+    void removeFromLRU(QGLPixmapData *data);
+    QGLPixmapData *pixmapLRU();
+
+private:
+    QScopedPointer<QGLTexturePoolPrivate> d_ptr;
+
+    Q_DECLARE_PRIVATE(QGLTexturePool)
+    Q_DISABLE_COPY(QGLTexturePool)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/opengl/qglwindowsurface_qws.cpp b/src/opengl/qglwindowsurface_qws.cpp
new file mode 100644
index 0000000000..8d1d733d79
--- /dev/null
+++ b/src/opengl/qglwindowsurface_qws.cpp
@@ -0,0 +1,133 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui/QPaintDevice>
+#include <QtGui/QWidget>
+#include <QtOpenGL/QGLWidget>
+#include "private/qglwindowsurface_qws_p.h"
+#include "private/qpaintengine_opengl_p.h"
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \class QWSGLWindowSurface
+    \since 4.3
+    \ingroup qws
+    \preliminary
+
+    \brief The QWSGLWindowSurface class provides the drawing area for top-level
+    windows with Qt for Embedded Linux on EGL/OpenGL ES. It also provides the
+    drawing area for \l{QGLWidget}s whether they are top-level windows or
+    children of another QWidget.
+
+    Note that this class is only available in Qt for Embedded Linux and only
+    available if Qt is configured with OpenGL support.
+*/
+
+class QWSGLWindowSurfacePrivate
+{
+public:
+    QWSGLWindowSurfacePrivate() :
+        qglContext(0), ownsContext(false) {}
+
+    QGLContext *qglContext;
+    bool ownsContext;
+};
+
+/*!
+    Constructs an empty QWSGLWindowSurface for the given top-level \a window.
+    The window surface is later initialized from chooseContext() and resources for it
+    is typically allocated in setGeometry().
+*/
+QWSGLWindowSurface::QWSGLWindowSurface(QWidget *window)
+    : QWSWindowSurface(window),
+      d_ptr(new QWSGLWindowSurfacePrivate)
+{
+}
+
+/*!
+    Constructs an empty QWSGLWindowSurface.
+*/
+QWSGLWindowSurface::QWSGLWindowSurface()
+    : d_ptr(new QWSGLWindowSurfacePrivate)
+{
+}
+
+/*!
+    Destroys the QWSGLWindowSurface object and frees any
+    allocated resources.
+ */
+QWSGLWindowSurface::~QWSGLWindowSurface()
+{
+    Q_D(QWSGLWindowSurface);
+    if (d->ownsContext)
+        delete d->qglContext;
+    delete d;
+}
+
+/*!
+    Returns the QGLContext of the window surface.
+*/
+QGLContext *QWSGLWindowSurface::context() const
+{
+    Q_D(const QWSGLWindowSurface);
+    if (!d->qglContext) {
+        QWSGLWindowSurface *that = const_cast<QWSGLWindowSurface*>(this);
+        that->setContext(new QGLContext(QGLFormat::defaultFormat()));
+        that->d_func()->ownsContext = true;
+    }
+    return d->qglContext;
+}
+
+/*!
+    Sets the QGLContext for this window surface to \a context.
+*/
+void QWSGLWindowSurface::setContext(QGLContext *context)
+{
+    Q_D(QWSGLWindowSurface);
+    if (d->ownsContext) {
+        delete d->qglContext;
+        d->ownsContext = false;
+    }
+    d->qglContext = context;
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/qglwindowsurface_qws_p.h b/src/opengl/qglwindowsurface_qws_p.h
new file mode 100644
index 0000000000..41d77e8e2d
--- /dev/null
+++ b/src/opengl/qglwindowsurface_qws_p.h
@@ -0,0 +1,90 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QGLWINDOWSURFACE_QWS_P_H
+#define QGLWINDOWSURFACE_QWS_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of the QWSGLWindowSurface class.  This header file may change from
+// version to version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qglobal.h>
+#include <QPaintDevice>
+#include "private/qwindowsurface_qws_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QPaintDevice;
+class QPoint;
+class QRegion;
+class QSize;
+class QWidget;
+class QGLContext;
+
+class QWSGLWindowSurfacePrivate;
+
+class Q_OPENGL_EXPORT QWSGLWindowSurface : public QWSWindowSurface
+{
+    Q_DECLARE_PRIVATE(QWSGLWindowSurface)
+
+public:
+    QWSGLWindowSurface(QWidget *widget);
+    QWSGLWindowSurface();
+    ~QWSGLWindowSurface();
+
+    QGLContext *context() const;
+    void setContext(QGLContext *context);
+
+private:
+    QWSGLWindowSurfacePrivate *d_ptr;
+};
+
+
+QT_END_NAMESPACE
+
+#endif // QGLWINDOWSURFACE_QWS_P_H
diff --git a/src/opengl/qgraphicsshadereffect.cpp b/src/opengl/qgraphicsshadereffect.cpp
new file mode 100644
index 0000000000..6983d9057e
--- /dev/null
+++ b/src/opengl/qgraphicsshadereffect.cpp
@@ -0,0 +1,314 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qgraphicsshadereffect_p.h"
+#if !defined(QT_OPENGL_ES_1)
+#include "qglshaderprogram.h"
+#include "gl2paintengineex/qglcustomshaderstage_p.h"
+#define QGL_HAVE_CUSTOM_SHADERS 1
+#endif
+#include <QtGui/qpainter.h>
+#include <QtGui/qgraphicsitem.h>
+#include <QtGui/private/qgraphicseffect_p.h>
+
+QT_BEGIN_NAMESPACE
+
+/*#
+    \class QGraphicsShaderEffect
+    \brief The QGraphicsShaderEffect class is the base class for creating
+    custom GLSL shader effects in a QGraphicsScene.
+    \since 4.6
+    \ingroup multimedia
+    \ingroup graphicsview-api
+
+    The specific effect is defined by a fragment of GLSL source code
+    supplied to setPixelShaderFragment().  This source code must define a
+    function with the signature
+    \c{lowp vec4 customShader(lowp sampler2D imageTexture, highp vec2 textureCoords)}
+    that returns the source pixel value
+    to use in the paint engine's shader program.  The shader fragment
+    is linked with the regular shader code used by the GL2 paint engine
+    to construct a complete QGLShaderProgram.
+
+    The following example shader converts the incoming pixmap to
+    grayscale and then applies a colorize operation using the
+    \c effectColor value:
+
+    \code
+    static char const colorizeShaderCode[] =
+        "uniform lowp vec4 effectColor;\n"
+        "lowp vec4 customShader(lowp sampler2D imageTexture, highp vec2 textureCoords) {\n"
+        "    vec4 src = texture2D(imageTexture, textureCoords);\n"
+        "    float gray = dot(src.rgb, vec3(0.212671, 0.715160, 0.072169));\n"
+        "    vec4 colorize = 1.0-((1.0-gray)*(1.0-effectColor));\n"
+        "    return vec4(colorize.rgb, src.a);\n"
+        "}";
+    \endcode
+
+    To use this shader code, it is necessary to define a subclass
+    of QGraphicsShaderEffect as follows:
+
+    \code
+    class ColorizeEffect : public QGraphicsShaderEffect
+    {
+        Q_OBJECT
+    public:
+        ColorizeEffect(QObject *parent = 0)
+            : QGraphicsShaderEffect(parent), color(Qt::black)
+        {
+            setPixelShaderFragment(colorizeShaderCode);
+        }
+
+        QColor effectColor() const { return color; }
+        void setEffectColor(const QColor& c)
+        {
+            color = c;
+            setUniformsDirty();
+        }
+
+    protected:
+        void setUniforms(QGLShaderProgram *program)
+        {
+            program->setUniformValue("effectColor", color);
+        }
+
+    private:
+        QColor color;
+    };
+    \endcode
+
+    The setUniforms() function is called when the effect is about
+    to be used for drawing to give the subclass the opportunity to
+    set effect-specific uniform variables.
+
+    QGraphicsShaderEffect is only supported when the GL2 paint engine
+    is in use.  When any other paint engine is in use (GL1, raster, etc),
+    the drawItem() method will draw its item argument directly with
+    no effect applied.
+
+    \sa QGraphicsEffect
+*/
+
+static const char qglslDefaultImageFragmentShader[] = "\
+    lowp vec4 customShader(lowp sampler2D imageTexture, highp vec2 textureCoords) { \
+        return texture2D(imageTexture, textureCoords); \
+    }\n";
+
+#ifdef QGL_HAVE_CUSTOM_SHADERS
+
+class QGLCustomShaderEffectStage : public QGLCustomShaderStage
+{
+public:
+    QGLCustomShaderEffectStage
+            (QGraphicsShaderEffect *e, const QByteArray& source)
+        : QGLCustomShaderStage(),
+          effect(e)
+    {
+        setSource(source);
+    }
+
+    void setUniforms(QGLShaderProgram *program);
+
+    QGraphicsShaderEffect *effect;
+};
+
+void QGLCustomShaderEffectStage::setUniforms(QGLShaderProgram *program)
+{
+    effect->setUniforms(program);
+}
+
+#endif
+
+class QGraphicsShaderEffectPrivate : public QGraphicsEffectPrivate
+{
+    Q_DECLARE_PUBLIC(QGraphicsShaderEffect)
+public:
+    QGraphicsShaderEffectPrivate()
+        : pixelShaderFragment(qglslDefaultImageFragmentShader)
+#ifdef QGL_HAVE_CUSTOM_SHADERS
+          , customShaderStage(0)
+#endif
+    {
+    }
+
+    QByteArray pixelShaderFragment;
+#ifdef QGL_HAVE_CUSTOM_SHADERS
+    QGLCustomShaderEffectStage *customShaderStage;
+#endif
+};
+
+/*#
+    Constructs a shader effect and attaches it to \a parent.
+*/
+QGraphicsShaderEffect::QGraphicsShaderEffect(QObject *parent)
+    : QGraphicsEffect(*new QGraphicsShaderEffectPrivate(), parent)
+{
+}
+
+/*#
+    Destroys this shader effect.
+*/
+QGraphicsShaderEffect::~QGraphicsShaderEffect()
+{
+#ifdef QGL_HAVE_CUSTOM_SHADERS
+    Q_D(QGraphicsShaderEffect);
+    delete d->customShaderStage;
+#endif
+}
+
+/*#
+    Returns the source code for the pixel shader fragment for
+    this shader effect.  The default is a shader that copies
+    its incoming pixmap directly to the output with no effect
+    applied.
+
+    \sa setPixelShaderFragment()
+*/
+QByteArray QGraphicsShaderEffect::pixelShaderFragment() const
+{
+    Q_D(const QGraphicsShaderEffect);
+    return d->pixelShaderFragment;
+}
+
+/*#
+    Sets the source code for the pixel shader fragment for
+    this shader effect to \a code.
+
+    The \a code must define a GLSL function with the signature
+    \c{lowp vec4 customShader(lowp sampler2D imageTexture, highp vec2 textureCoords)}
+    that returns the source pixel value to use in the paint engine's
+    shader program.  The following is the default pixel shader fragment,
+    which draws a pixmap with no effect applied:
+
+    \code
+    lowp vec4 customShader(lowp sampler2D imageTexture, highp vec2 textureCoords) {
+        return texture2D(imageTexture, textureCoords);
+    }
+    \endcode
+
+    \sa pixelShaderFragment(), setUniforms()
+*/
+void QGraphicsShaderEffect::setPixelShaderFragment(const QByteArray& code)
+{
+    Q_D(QGraphicsShaderEffect);
+    if (d->pixelShaderFragment != code) {
+        d->pixelShaderFragment = code;
+#ifdef QGL_HAVE_CUSTOM_SHADERS
+        delete d->customShaderStage;
+        d->customShaderStage = 0;
+#endif
+    }
+}
+
+/*#
+    \reimp
+*/
+void QGraphicsShaderEffect::draw(QPainter *painter)
+{
+    Q_D(QGraphicsShaderEffect);
+
+#ifdef QGL_HAVE_CUSTOM_SHADERS
+    // Set the custom shader on the paint engine.  The setOnPainter()
+    // call may fail if the paint engine is not GL2.  In that case,
+    // we fall through to drawing the pixmap normally.
+    if (!d->customShaderStage) {
+        d->customShaderStage = new QGLCustomShaderEffectStage
+            (this, d->pixelShaderFragment);
+    }
+    bool usingShader = d->customShaderStage->setOnPainter(painter);
+
+    QPoint offset;
+    if (sourceIsPixmap()) {
+        // No point in drawing in device coordinates (pixmap will be scaled anyways).
+        const QPixmap pixmap = sourcePixmap(Qt::LogicalCoordinates, &offset);
+        painter->drawPixmap(offset, pixmap);
+    } else {
+        // Draw pixmap in device coordinates to avoid pixmap scaling.
+        const QPixmap pixmap = sourcePixmap(Qt::DeviceCoordinates, &offset);
+        QTransform restoreTransform = painter->worldTransform();
+        painter->setWorldTransform(QTransform());
+        painter->drawPixmap(offset, pixmap);
+        painter->setWorldTransform(restoreTransform);
+    }
+
+    // Remove the custom shader to return to normal painting operations.
+    if (usingShader)
+        d->customShaderStage->removeFromPainter(painter);
+#else
+    drawSource(painter);
+#endif
+}
+
+/*#
+    Sets the custom uniform variables on this shader effect to
+    be dirty.  The setUniforms() function will be called the next
+    time the shader program corresponding to this effect is used.
+
+    This function is typically called by subclasses when an
+    effect-specific parameter is changed by the application.
+
+    \sa setUniforms()
+*/
+void QGraphicsShaderEffect::setUniformsDirty()
+{
+#ifdef QGL_HAVE_CUSTOM_SHADERS
+    Q_D(QGraphicsShaderEffect);
+    if (d->customShaderStage)
+        d->customShaderStage->setUniformsDirty();
+#endif
+}
+
+/*#
+    Sets custom uniform variables on the current GL context when
+    \a program is about to be used by the paint engine.
+
+    This function should be overridden if the shader set with
+    setPixelShaderFragment() has additional parameters beyond
+    those that the paint engine normally sets itself.
+
+    \sa setUniformsDirty()
+*/
+void QGraphicsShaderEffect::setUniforms(QGLShaderProgram *program)
+{
+    Q_UNUSED(program);
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/qgraphicsshadereffect_p.h b/src/opengl/qgraphicsshadereffect_p.h
new file mode 100644
index 0000000000..3b319fdbf0
--- /dev/null
+++ b/src/opengl/qgraphicsshadereffect_p.h
@@ -0,0 +1,94 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QGRAPHICSSHADEREFFECT_P_H
+#define QGRAPHICSSHADEREFFECT_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtGui/qgraphicseffect.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(OpenGL)
+
+class QGLShaderProgram;
+class QGLCustomShaderEffectStage;
+class QGraphicsShaderEffectPrivate;
+
+class Q_OPENGL_EXPORT QGraphicsShaderEffect : public QGraphicsEffect
+{
+    Q_OBJECT
+public:
+    QGraphicsShaderEffect(QObject *parent = 0);
+    virtual ~QGraphicsShaderEffect();
+
+    QByteArray pixelShaderFragment() const;
+    void setPixelShaderFragment(const QByteArray& code);
+
+protected:
+    void draw(QPainter *painter);
+    void setUniformsDirty();
+    virtual void setUniforms(QGLShaderProgram *program);
+
+private:
+    Q_DECLARE_PRIVATE(QGraphicsShaderEffect)
+    Q_DISABLE_COPY(QGraphicsShaderEffect)
+
+    friend class QGLCustomShaderEffectStage;
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QGRAPHICSSHADEREFFECT_P_H
diff --git a/src/opengl/qgraphicssystem_gl.cpp b/src/opengl/qgraphicssystem_gl.cpp
new file mode 100644
index 0000000000..0aa3c2e6c7
--- /dev/null
+++ b/src/opengl/qgraphicssystem_gl.cpp
@@ -0,0 +1,114 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qgraphicssystem_gl_p.h"
+#include <QGraphicsView>
+
+#include "private/qpixmap_raster_p.h"
+#include "private/qpixmapdata_gl_p.h"
+#include "private/qwindowsurface_gl_p.h"
+#include "private/qgl_p.h"
+#include <private/qwindowsurface_raster_p.h>
+
+#if defined(Q_WS_X11) && !defined(QT_NO_EGL)
+#include "private/qpixmapdata_x11gl_p.h"
+#include "private/qwindowsurface_x11gl_p.h"
+#endif
+
+#if defined(Q_OS_SYMBIAN)
+#include <QtGui/private/qapplication_p.h>
+#endif
+
+#ifdef QGL_USE_TEXTURE_POOL
+#include "private/qgltexturepool_p.h"
+#endif
+
+QT_BEGIN_NAMESPACE
+
+extern QGLWidget *qt_gl_getShareWidget();
+
+QPixmapData *QGLGraphicsSystem::createPixmapData(QPixmapData::PixelType type) const
+{
+    return new QGLPixmapData(type);
+}
+
+QWindowSurface *QGLGraphicsSystem::createWindowSurface(QWidget *widget) const
+{
+#ifdef Q_WS_WIN
+    // On Windows the QGLWindowSurface class can't handle
+    // drop shadows and native effects, e.g. fading a menu in/out using
+    // top level window opacity.
+    if (widget->windowType() == Qt::Popup)
+        return new QRasterWindowSurface(widget);
+#endif
+
+#if defined(Q_WS_X11) && !defined(QT_NO_EGL)
+    if (m_useX11GL && QX11GLPixmapData::hasX11GLPixmaps()) {
+        // If the widget is a QGraphicsView which will be re-drawing the entire
+        // scene each frame anyway, we should use QGLWindowSurface as this may
+        // provide proper buffer flipping, which should be faster than QX11GL's
+        // blitting approach:
+        QGraphicsView* qgv = qobject_cast<QGraphicsView*>(widget);
+        if (qgv && qgv->viewportUpdateMode() == QGraphicsView::FullViewportUpdate)
+            return new QGLWindowSurface(widget);
+        else
+            return new QX11GLWindowSurface(widget);
+    }
+#endif
+
+#if defined(Q_OS_SYMBIAN)
+    if (!QApplicationPrivate::instance()->useTranslucentEGLSurfaces) {
+        QWidgetPrivate *d = qt_widget_private(widget);
+        if (!d->isOpaque && widget->testAttribute(Qt::WA_TranslucentBackground))
+            return d->createDefaultWindowSurface_sys();
+    }
+#endif
+
+    return new QGLWindowSurface(widget);
+}
+#ifdef QGL_USE_TEXTURE_POOL
+void QGLGraphicsSystem::releaseCachedResources()
+{
+    QGLTexturePool::instance()->hibernate();
+}
+#endif
+QT_END_NAMESPACE
+
diff --git a/src/opengl/qgraphicssystem_gl_p.h b/src/opengl/qgraphicssystem_gl_p.h
new file mode 100644
index 0000000000..5829dccea9
--- /dev/null
+++ b/src/opengl/qgraphicssystem_gl_p.h
@@ -0,0 +1,80 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QGRAPHICSSYSTEM_RASTER_P_H
+#define QGRAPHICSSYSTEM_RASTER_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of other Qt classes.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "private/qgraphicssystem_p.h"
+
+#include <QMap>
+
+QT_BEGIN_NAMESPACE
+
+class Q_OPENGL_EXPORT QGLGraphicsSystem : public QGraphicsSystem
+{
+public:
+    QGLGraphicsSystem(bool useX11GL);
+
+    QPixmapData *createPixmapData(QPixmapData::PixelType type) const;
+    QWindowSurface *createWindowSurface(QWidget *widget) const;
+
+#ifdef QGL_USE_TEXTURE_POOL
+    void releaseCachedResources();
+#endif
+private:
+    bool m_useX11GL;
+};
+
+QT_END_NAMESPACE
+
+#endif
+
diff --git a/src/opengl/qpaintengine_opengl.cpp b/src/opengl/qpaintengine_opengl.cpp
new file mode 100644
index 0000000000..9da811a9d0
--- /dev/null
+++ b/src/opengl/qpaintengine_opengl.cpp
@@ -0,0 +1,5680 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <qdebug.h>
+#include <private/qfontengine_p.h>
+#include <qmath.h>
+#include <private/qmath_p.h>
+#include <private/qdrawhelper_p.h>
+#include <private/qpaintengine_p.h>
+#include "qapplication.h"
+#include "qbrush.h"
+#include "qgl.h"
+#include <private/qgl_p.h>
+#include <private/qglpaintdevice_p.h>
+#include <private/qpainter_p.h>
+#include "qmap.h"
+#include <private/qpaintengine_opengl_p.h>
+#include <private/qdatabuffer_p.h>
+#include "qpen.h"
+#include "qvarlengtharray.h"
+#include <private/qpainter_p.h>
+#include <private/qglpixelbuffer_p.h>
+#include <private/qbezier_p.h>
+#include <qglframebufferobject.h>
+#include <private/qstatictext_p.h>
+
+#include "private/qtessellator_p.h"
+
+#include "util/fragmentprograms_p.h"
+
+#ifdef Q_WS_QWS
+#include "private/qglwindowsurface_qws_p.h"
+#include "qwsmanager_qws.h"
+#include "private/qwsmanager_p.h"
+#endif
+
+#define QGL_FUNC_CONTEXT QGLContext *ctx = const_cast<QGLContext *>(device->context());
+
+#include <stdlib.h>
+#include "qpaintengine_opengl_p.h"
+
+QT_BEGIN_NAMESPACE
+
+Q_GUI_EXPORT QImage qt_imageForBrush(int brushStyle, bool invert); //in qbrush.cpp
+#ifdef QT_MAC_USE_COCOA
+extern void *qt_current_nsopengl_context(); // qgl_mac.mm
+#endif
+
+#define QREAL_MAX 9e100
+#define QREAL_MIN -9e100
+
+extern int qt_next_power_of_two(int v);
+
+#define DISABLE_DEBUG_ONCE
+
+//#define DEBUG_DISPLAY_MASK_TEXTURE
+
+#ifdef DISABLE_DEBUG_ONCE
+#define DEBUG_OVERRIDE(state) ;
+#define DEBUG_ONCE_STR(str) ;
+#define DEBUG_ONCE if (0)
+#else
+static int DEBUG_OVERRIDE_FLAG = 0;
+static bool DEBUG_TEMP_FLAG;
+#define DEBUG_OVERRIDE(state) { state ? ++DEBUG_OVERRIDE_FLAG : --DEBUG_OVERRIDE_FLAG; }
+#define DEBUG_ONCE if ((DEBUG_TEMP_FLAG = DEBUG_OVERRIDE_FLAG) && 0) ; else for (static int DEBUG_ONCE_FLAG = false; !DEBUG_ONCE_FLAG || DEBUG_TEMP_FLAG; DEBUG_ONCE_FLAG = true, DEBUG_TEMP_FLAG = false)
+#define DEBUG_ONCE_STR(str) DEBUG_ONCE qDebug() << (str);
+#endif
+
+#ifdef Q_WS_X11
+static bool qt_nvidiaFboNeedsFinish = false;
+#endif
+
+static inline void qt_glColor4ubv(unsigned char *col)
+{
+    glColor4f(col[0]/255.0f, col[1]/255.0f, col[2]/255.0f, col[3]/255.0f);
+}
+
+struct QT_PointF {
+    qreal x;
+    qreal y;
+};
+
+struct QGLTrapezoid
+{
+    QGLTrapezoid()
+    {}
+
+    QGLTrapezoid(qreal top_, qreal bottom_, qreal topLeftX_, qreal topRightX_, qreal bottomLeftX_, qreal bottomRightX_)
+        : top(top_),
+          bottom(bottom_),
+          topLeftX(topLeftX_),
+          topRightX(topRightX_),
+          bottomLeftX(bottomLeftX_),
+          bottomRightX(bottomRightX_)
+    {}
+
+    const QGLTrapezoid translated(const QPointF &delta) const;
+
+    qreal top;
+    qreal bottom;
+    qreal topLeftX;
+    qreal topRightX;
+    qreal bottomLeftX;
+    qreal bottomRightX;
+};
+
+const QGLTrapezoid QGLTrapezoid::translated(const QPointF &delta) const
+{
+    QGLTrapezoid trap(*this);
+    trap.top += delta.y();
+    trap.bottom += delta.y();
+    trap.topLeftX += delta.x();
+    trap.topRightX += delta.x();
+    trap.bottomLeftX += delta.x();
+    trap.bottomRightX += delta.x();
+    return trap;
+}
+
+
+class QOpenGLImmediateModeTessellator;
+class QGLMaskGenerator;
+class QGLOffscreen;
+
+class QGLMaskTextureCache
+{
+public:
+    void setOffscreenSize(const QSize &offscreenSize);
+    void setDrawableSize(const QSize &drawableSize);
+
+    struct CacheLocation {
+        QRect rect;
+        int channel;
+
+        QRect screen_rect;
+    };
+
+    struct CacheInfo {
+        inline CacheInfo(const QPainterPath &p, const QTransform &m, qreal w = -1) :
+            path(p), matrix(m), stroke_width(w), age(0) {}
+
+        QPainterPath path;
+        QTransform matrix;
+        qreal stroke_width;
+
+        CacheLocation loc;
+
+        int age;
+    };
+
+    struct QuadTreeNode {
+        quint64 key;
+
+        int largest_available_block;
+        int largest_used_block;
+    };
+
+    CacheLocation getMask(QGLMaskGenerator &maskGenerator, QOpenGLPaintEnginePrivate *engine);
+
+    typedef QMultiHash<quint64, CacheInfo> QGLTextureCacheHash;
+
+    enum {block_size = 64};
+
+    // throw out keys that are too old
+    void maintainCache();
+    void clearCache();
+
+private:
+    quint64 hash(const QPainterPath &p, const QTransform &m, qreal w);
+
+    void createMask(quint64 key, CacheInfo &info, QGLMaskGenerator &maskGenerator);
+
+    QSize offscreenSize;
+    QSize drawableSize;
+
+    QGLTextureCacheHash cache;
+
+    QVector<QuadTreeNode> occupied_quadtree[4];
+
+    void quadtreeUpdate(int channel, int node, int current_block_size);
+    void quadtreeAllocate(quint64 key, const QSize &size, QRect *rect, int *channel);
+
+    bool quadtreeFindAvailableLocation(const QSize &size, QRect *rect, int *channel);
+    void quadtreeFindExistingLocation(const QSize &size, QRect *rect, int *channel);
+
+    void quadtreeInsert(int channel, quint64 key, const QRect &rect, int node = 0);
+    void quadtreeClear(int channel, const QRect &rect, int node = 0);
+
+    int quadtreeBlocksize(int node);
+    QPoint quadtreeLocation(int node);
+
+    QOpenGLPaintEnginePrivate *engine;
+};
+
+Q_GLOBAL_STATIC(QGLMaskTextureCache, qt_mask_texture_cache)
+
+class QGLOffscreen : public QObject
+{
+    Q_OBJECT
+public:
+    QGLOffscreen()
+        : QObject(),
+          offscreen(0),
+          ctx(0),
+          mask_dim(0),
+          activated(false),
+          bound(false)
+    {
+        connect(QGLSignalProxy::instance(),
+                SIGNAL(aboutToDestroyContext(const QGLContext*)),
+                SLOT(cleanupGLContextRefs(const QGLContext*)));
+    }
+
+    inline void setDevice(QPaintDevice *pdev);
+
+    void begin();
+    void end();
+
+    inline void bind();
+    inline void release();
+
+    inline bool isBound() const;
+
+    inline QSize drawableSize() const;
+    inline QSize offscreenSize() const;
+
+    inline GLuint offscreenTexture() const;
+
+    QGLContext *context() const;
+
+    static bool isSupported();
+
+    inline void initialize();
+
+    inline bool isValid() const;
+
+public Q_SLOTS:
+    void cleanupGLContextRefs(const QGLContext *context) {
+        if (context == ctx) {
+            delete offscreen;
+            ctx = 0;
+            offscreen = 0;
+            mask_dim = 0;
+        }
+    }
+
+private:
+    QGLPaintDevice* device;
+
+    QGLFramebufferObject *offscreen;
+    QGLContext *ctx;
+
+    // dimensions of mask texture (square)
+    int mask_dim;
+    QSize last_failed_size;
+
+    bool drawable_fbo;
+
+    bool activated;
+    bool initialized;
+
+    bool bound;
+};
+
+inline void QGLOffscreen::setDevice(QPaintDevice *pdev)
+{
+    if (pdev->devType() == QInternal::OpenGL)
+        device = static_cast<QGLPaintDevice*>(pdev);
+    else
+        device = QGLPaintDevice::getDevice(pdev);
+
+    if (!device)
+        return;
+
+    drawable_fbo = (pdev->devType() == QInternal::FramebufferObject);
+}
+
+void QGLOffscreen::begin()
+{
+#ifndef QT_OPENGL_ES
+    initialized = false;
+
+    if (activated)
+        initialize();
+#endif
+}
+
+void QGLOffscreen::initialize()
+{
+#ifndef QT_OPENGL_ES
+    if (initialized)
+        return;
+
+    activated = true;
+    initialized = true;
+
+    int dim = qMax(2048, static_cast<int>(qt_next_power_of_two(qMax(device->size().width(), device->size().height()))));
+
+    bool shared_context = QGLContext::areSharing(device->context(), ctx);
+    bool would_fail = last_failed_size.isValid() &&
+                      (device->size().width() >= last_failed_size.width() ||
+                       device->size().height() >= last_failed_size.height());
+    bool needs_refresh = dim > mask_dim || !shared_context;
+
+    if (needs_refresh && !would_fail) {
+        DEBUG_ONCE qDebug() << "QGLOffscreen::initialize(): creating offscreen of size" << dim;
+        delete offscreen;
+        offscreen = new QGLFramebufferObject(dim, dim, GLenum(GL_TEXTURE_2D));
+        mask_dim = dim;
+
+        if (!offscreen->isValid()) {
+            qWarning("QGLOffscreen: Invalid offscreen fbo (size %dx%d)", mask_dim, mask_dim);
+            delete offscreen;
+            offscreen = 0;
+            mask_dim = 0;
+            last_failed_size = device->size();
+        }
+    }
+
+    qt_mask_texture_cache()->setOffscreenSize(offscreenSize());
+    qt_mask_texture_cache()->setDrawableSize(device->size());
+    ctx = device->context();
+#endif
+}
+
+inline bool QGLOffscreen::isValid() const
+{
+    return offscreen;
+}
+
+void QGLOffscreen::end()
+{
+    if (bound)
+        release();
+#ifdef DEBUG_DISPLAY_MASK_TEXTURE
+    glReadBuffer(GL_BACK);
+    glDrawBuffer(GL_BACK);
+    glMatrixMode(GL_MODELVIEW);
+    glLoadIdentity();
+    glColor4f(1, 1, 1, 1);
+    glDisable(GL_DEPTH_TEST);
+    glBlendFunc(GL_ONE, GL_ZERO);
+    glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
+    glEnable(GL_TEXTURE_2D);
+    glBindTexture(GL_TEXTURE_2D, offscreen->texture());
+
+    glBegin(GL_QUADS);
+    glTexCoord2f(0.0, 1.0); glVertex2f(0.0, 0.0);
+    glTexCoord2f(1.0, 1.0); glVertex2f(drawable.size().width(), 0.0);
+    glTexCoord2f(1.0, 0.0); glVertex2f(drawable.size().width(), drawable.size().height());
+    glTexCoord2f(0.0, 0.0); glVertex2f(0.0, drawable.size().height());
+    glEnd();
+
+    glBindTexture(GL_TEXTURE_2D, 0);
+    glDisable(GL_TEXTURE_2D);
+#endif
+}
+
+inline void QGLOffscreen::bind()
+{
+#ifndef QT_OPENGL_ES
+    Q_ASSERT(initialized);
+
+    if (!offscreen || bound)
+        return;
+
+    DEBUG_ONCE qDebug() << "QGLOffscreen: binding offscreen";
+    offscreen->bind();
+
+    bound = true;
+
+    glViewport(0, 0, offscreenSize().width(), offscreenSize().height());
+
+    glMatrixMode(GL_PROJECTION);
+    glLoadIdentity();
+    glOrtho(0, offscreenSize().width(), offscreenSize().height(), 0, -999999, 999999);
+    glMatrixMode(GL_MODELVIEW);
+#endif
+}
+
+inline void QGLOffscreen::release()
+{
+#ifndef QT_OPENGL_ES
+    if (!offscreen || !bound)
+        return;
+
+#ifdef Q_WS_X11
+    // workaround for bug in nvidia driver versions 9x.xx
+    if (qt_nvidiaFboNeedsFinish)
+        glFinish();
+#endif
+
+    DEBUG_ONCE_STR("QGLOffscreen: releasing offscreen");
+
+    if (drawable_fbo)
+        device->ensureActiveTarget(); //###
+    else
+        offscreen->release();
+
+    QSize sz(device->size());
+    glViewport(0, 0, sz.width(), sz.height());
+
+    glMatrixMode(GL_PROJECTION);
+    glLoadIdentity();
+#ifndef QT_OPENGL_ES
+    glOrtho(0, sz.width(), sz.height(), 0, -999999, 999999);
+#else
+    glOrthof(0, sz.width(), sz.height(), 0, -999999, 999999);
+#endif
+    glMatrixMode(GL_MODELVIEW);
+
+    bound = false;
+#endif
+}
+
+inline bool QGLOffscreen::isBound() const
+{
+    return bound;
+}
+
+inline QSize QGLOffscreen::drawableSize() const
+{
+    return device->size();
+}
+
+inline QSize QGLOffscreen::offscreenSize() const
+{
+    return QSize(mask_dim, mask_dim);
+}
+
+inline GLuint QGLOffscreen::offscreenTexture() const
+{
+    return offscreen ? offscreen->texture() : 0;
+}
+
+inline QGLContext *QGLOffscreen::context() const
+{
+    return ctx;
+}
+
+bool QGLOffscreen::isSupported()
+{
+    return (QGLExtensions::glExtensions() & QGLExtensions::FramebufferObject); // for fbo
+}
+
+struct QDrawQueueItem
+{
+    QDrawQueueItem(qreal _opacity,
+                   QBrush _brush,
+                   const QPointF &_brush_origion,
+                   QPainter::CompositionMode _composition_mode,
+                   const QTransform &_matrix,
+                   QGLMaskTextureCache::CacheLocation _location)
+        : opacity(_opacity),
+          brush(_brush),
+          brush_origin(_brush_origion),
+          composition_mode(_composition_mode),
+          matrix(_matrix),
+          location(_location) {}
+    qreal opacity;
+    QBrush brush;
+    QPointF brush_origin;
+    QPainter::CompositionMode composition_mode;
+
+    QTransform matrix;
+    QGLMaskTextureCache::CacheLocation location;
+};
+
+////////// GL program cache: start
+
+struct GLProgram {
+    int brush; // brush index or mask index
+    int mode;  // composition mode index
+    bool mask;
+    GLuint program;
+};
+
+typedef QMultiHash<const QGLContext *, GLProgram> QGLProgramHash;
+
+class QGLProgramCache : public QObject
+{
+    Q_OBJECT
+public:
+    QGLProgramCache() {
+        // we have to know when a context is deleted so we can free
+        // any program handles it holds
+        connect(QGLSignalProxy::instance(), SIGNAL(aboutToDestroyContext(const QGLContext*)),
+                SLOT(cleanupPrograms(const QGLContext*)));
+
+    }
+    ~QGLProgramCache() {
+        // at this point the cache should contain 0 elements
+        // Q_ASSERT(program.size() == 0);
+    }
+
+    GLuint getProgram(const QGLContext *ctx, int brush, int mode, bool mask_mode)
+    {
+        // 1. see if we have an entry for the ctx context
+        QList<GLProgram> progs = programs.values(ctx);
+        for (int i=0; i<progs.size(); ++i) {
+            const GLProgram &prg = progs.at(i);
+            if (mask_mode) {
+                if (prg.mask && prg.brush == brush)
+                    return prg.program;
+            } else {
+                if (!prg.mask && prg.brush == brush && prg.mode == mode)
+                    return prg.program;
+            }
+        }
+
+        // 2. try to find a match in a shared context, and update the
+        // hash with the entry found
+        QList<const QGLContext *> contexts = programs.uniqueKeys();
+        for (int i=0; i<contexts.size(); ++i) {
+            const QGLContext *cx = contexts.at(i);
+            if (cx != ctx && QGLContext::areSharing(cx, ctx)) {
+                QList<GLProgram> progs = programs.values(cx);
+                for (int k=0; k<progs.size(); ++k) {
+                    const GLProgram &prg = progs.at(k);
+                    if (mask_mode) {
+                        if (prg.mask && prg.brush == brush) {
+                            programs.insert(ctx, prg);
+                            return prg.program;
+                        }
+                    } else {
+                        if (!prg.mask && prg.brush == brush && prg.mode == mode) {
+                            programs.insert(ctx, prg);
+                            return prg.program;
+                        }
+                    }
+                }
+            }
+        }
+
+        // 3. compile a new program and place it into the cache
+        // NB! assumes ctx is the current GL context
+        GLProgram prg;
+        prg.brush = brush;
+        prg.mode = mode;
+        prg.mask = mask_mode;
+        glGenProgramsARB(1, &prg.program);
+        glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, prg.program);
+        const char *src = mask_mode
+                          ? mask_fragment_program_sources[brush]
+                          : painter_fragment_program_sources[brush][mode];
+        // necessary for .NET 2002, apparently
+        const GLbyte *gl_src = reinterpret_cast<const GLbyte *>(src);
+
+        while (glGetError() != GL_NO_ERROR) {} // reset error state
+        glProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB,
+                           int(strlen(src)), gl_src);
+        if (glGetError() != GL_NO_ERROR) {
+//            qDebug() << "QGLProgramCache: Unable to compile fragment program.";
+            glDeleteProgramsARB(1, &prg.program);
+            return 0;
+        }
+
+//        qDebug() << "QGLProgramCache: Creating GL program:" << prg.program << hex << ctx;
+        programs.insert(ctx, prg);
+        return prg.program;
+    }
+
+public Q_SLOTS:
+    void cleanupPrograms(const QGLContext *context)
+    {
+        QGLProgramHash::iterator it = programs.begin();
+        while (it != programs.end()) {
+            if (it.key() == context) {
+                if (!context->isSharing()) {
+                    // the ctx variable below is needed for the glDeleteProgramARB call
+                    // since it is resolved from our extension system
+                    // NB! assumes context is the current GL context
+                    const QGLContext *ctx = context;
+                    // qDebug() << "QGLProgramHash: Deleting GL program:" << it.value().program << hex << it.key();
+                    glDeleteProgramsARB(1, &it.value().program);
+                }
+                it = programs.erase(it);
+            } else {
+                ++it;
+            }
+        }
+    }
+
+private:
+    QGLProgramHash programs;
+};
+
+Q_GLOBAL_STATIC(QGLProgramCache, qt_gl_program_cache)
+
+////////// GL program cache: end
+
+class QOpenGLPaintEnginePrivate;
+class QGLPrivateCleanup : public QObject
+{
+    Q_OBJECT
+public:
+    QGLPrivateCleanup(QOpenGLPaintEnginePrivate *priv)
+        : p(priv)
+    {
+        connect(QGLSignalProxy::instance(),
+                SIGNAL(aboutToDestroyContext(const QGLContext*)),
+                SLOT(cleanupGLContextRefs(const QGLContext*)));
+    }
+
+public Q_SLOTS:
+    void cleanupGLContextRefs(const QGLContext *context);
+
+private:
+    QOpenGLPaintEnginePrivate *p;
+};
+
+class QOpenGLPaintEnginePrivate : public QPaintEngineExPrivate
+{
+    Q_DECLARE_PUBLIC(QOpenGLPaintEngine)
+public:
+    QOpenGLPaintEnginePrivate()
+        : opacity(1)
+        , composition_mode(QPainter::CompositionMode_SourceOver)
+        , has_fast_pen(false)
+        , use_stencil_method(false)
+        , dirty_drawable_texture(false)
+        , has_stencil_face_ext(false)
+        , use_fragment_programs(false)
+        , high_quality_antialiasing(false)
+        , use_smooth_pixmap_transform(false)
+        , use_emulation(false)
+        , txop(QTransform::TxNone)
+        , inverseScale(1)
+        , moveToCount(0)
+        , last_created_state(0)
+        , shader_ctx(0)
+        , grad_palette(0)
+        , tess_points(0)
+        , drawable_texture(0)
+        , ref_cleaner(this)
+        {}
+
+    inline void setGLPen(const QColor &c) {
+        uint alpha = qRound(c.alpha() * opacity);
+        pen_color[0] = qt_div_255(c.red() * alpha);
+        pen_color[1] = qt_div_255(c.green() * alpha);
+        pen_color[2] = qt_div_255(c.blue() * alpha);
+        pen_color[3] = alpha;
+    }
+
+    inline void setGLBrush(const QColor &c) {
+        uint alpha = qRound(c.alpha() * opacity);
+        brush_color[0] = qt_div_255(c.red() * alpha);
+        brush_color[1] = qt_div_255(c.green() * alpha);
+        brush_color[2] = qt_div_255(c.blue() * alpha);
+        brush_color[3] = alpha;
+    }
+
+    inline void setGradientOps(const QBrush &brush, const QRectF &bounds);
+    void createGradientPaletteTexture(const QGradient& g);
+
+    void updateGradient(const QBrush &brush, const QRectF &bounds);
+
+    inline void lineToStencil(qreal x, qreal y);
+    inline void curveToStencil(const QPointF &cp1, const QPointF &cp2, const QPointF &ep);
+    void pathToVertexArrays(const QPainterPath &path);
+    void fillVertexArray(Qt::FillRule fillRule);
+    void drawVertexArrays();
+    void fillPath(const QPainterPath &path);
+    void fillPolygon_dev(const QPointF *polygonPoints, int pointCount,
+                         Qt::FillRule fill);
+
+    void drawFastRect(const QRectF &rect);
+    void strokePath(const QPainterPath &path, bool use_cache);
+    void strokePathFastPen(const QPainterPath &path, bool needsResolving);
+    void strokeLines(const QPainterPath &path);
+
+    void updateDepthClip();
+    void systemStateChanged();
+
+    void cleanupGLContextRefs(const QGLContext *context) {
+        if (context == shader_ctx)
+            shader_ctx = 0;
+    }
+
+    inline void updateFastPen() {
+        qreal pen_width = cpen.widthF();
+        has_fast_pen =
+            ((pen_width == 0 || (pen_width <= 1 && matrix.type() <= QTransform::TxTranslate))
+             || cpen.isCosmetic())
+            && cpen.style() == Qt::SolidLine
+            && cpen.isSolid();
+
+    }
+
+    void disableClipping();
+    void enableClipping();
+    void ensureDrawableTexture();
+
+    QPen cpen;
+    QBrush cbrush;
+    Qt::BrushStyle brush_style;
+    QPointF brush_origin;
+    Qt::BrushStyle pen_brush_style;
+    qreal opacity;
+    QPainter::CompositionMode composition_mode;
+
+    Qt::BrushStyle current_style;
+
+    uint has_pen : 1;
+    uint has_brush : 1;
+    uint has_fast_pen : 1;
+    uint use_stencil_method : 1;
+    uint dirty_drawable_texture : 1;
+    uint has_stencil_face_ext : 1;
+    uint use_fragment_programs : 1;
+    uint high_quality_antialiasing : 1;
+    uint has_antialiasing : 1;
+    uint has_fast_composition_mode : 1;
+    uint use_smooth_pixmap_transform : 1;
+    uint use_system_clip : 1;
+    uint use_emulation : 1;
+
+    QRegion dirty_stencil;
+
+    void updateUseEmulation();
+
+    QTransform matrix;
+    GLubyte pen_color[4];
+    GLubyte brush_color[4];
+    QTransform::TransformationType txop;
+    QGLPaintDevice* device;
+    QGLOffscreen offscreen;
+
+    qreal inverseScale;
+
+    int moveToCount;
+    QPointF path_start;
+
+    bool isFastRect(const QRectF &r);
+
+    void drawImageAsPath(const QRectF &r, const QImage &img, const QRectF &sr);
+    void drawTiledImageAsPath(const QRectF &r, const QImage &img, qreal sx, qreal sy, const QPointF &offset);
+
+    void drawOffscreenPath(const QPainterPath &path);
+
+    void composite(const QRectF &rect, const QPoint &maskOffset = QPoint());
+    void composite(GLuint primitive, const GLfloat *vertexArray, int vertexCount, const QPoint &maskOffset = QPoint());
+
+    bool createFragmentPrograms();
+    void deleteFragmentPrograms();
+    void updateFragmentProgramData(int locations[]);
+
+    void cacheItemErased(int channel, const QRect &rect);
+
+    void addItem(const QGLMaskTextureCache::CacheLocation &location);
+    void drawItem(const QDrawQueueItem &item);
+    void flushDrawQueue();
+
+    void copyDrawable(const QRectF &rect);
+
+    void updateGLMatrix() const;
+
+    mutable QPainterState *last_created_state;
+
+    QGLContext *shader_ctx;
+    GLuint grad_palette;
+
+    GLuint painter_fragment_programs[num_fragment_brushes][num_fragment_composition_modes];
+    GLuint mask_fragment_programs[num_fragment_masks];
+
+    float inv_matrix_data[3][4];
+    float fmp_data[4];
+    float fmp2_m_radius2_data[4];
+    float angle_data[4];
+    float linear_data[4];
+
+    float porterduff_ab_data[4];
+    float porterduff_xyz_data[4];
+
+    float mask_offset_data[4];
+    float mask_channel_data[4];
+
+    FragmentBrushType fragment_brush;
+    FragmentCompositionModeType fragment_composition_mode;
+
+    void setPorterDuffData(float a, float b, float x, float y, float z);
+    void setInvMatrixData(const QTransform &inv_matrix);
+
+    qreal max_x;
+    qreal max_y;
+    qreal min_x;
+    qreal min_y;
+
+    QDataBuffer<QPointF> tess_points;
+    QVector<int> tess_points_stops;
+
+    GLdouble projection_matrix[4][4];
+
+#if defined(QT_OPENGL_ES_1) || defined(QT_OPENGL_ES_2)
+    GLfloat mv_matrix[4][4];
+#else
+    GLdouble mv_matrix[4][4];
+#endif
+
+    QList<QDrawQueueItem> drawQueue;
+
+    GLuint drawable_texture;
+    QSize drawable_texture_size;
+
+    int max_texture_size;
+
+    QGLPrivateCleanup ref_cleaner;
+    friend class QGLMaskTextureCache;
+};
+
+class QOpenGLCoordinateOffset
+{
+public:
+    QOpenGLCoordinateOffset(QOpenGLPaintEnginePrivate *d);
+    ~QOpenGLCoordinateOffset();
+
+    static void enableOffset(QOpenGLPaintEnginePrivate *d);
+    static void disableOffset(QOpenGLPaintEnginePrivate *d);
+
+private:
+    QOpenGLPaintEnginePrivate *d;
+};
+
+QOpenGLCoordinateOffset::QOpenGLCoordinateOffset(QOpenGLPaintEnginePrivate *d_)
+    : d(d_)
+{
+    enableOffset(d);
+}
+
+void QOpenGLCoordinateOffset::enableOffset(QOpenGLPaintEnginePrivate *d)
+{
+    if (!d->has_antialiasing) {
+        glMatrixMode(GL_MODELVIEW);
+        glPushMatrix();
+        d->mv_matrix[3][0] += 0.5;
+        d->mv_matrix[3][1] += 0.5;
+        d->updateGLMatrix();
+    }
+}
+
+QOpenGLCoordinateOffset::~QOpenGLCoordinateOffset()
+{
+    disableOffset(d);
+}
+
+void QOpenGLCoordinateOffset::disableOffset(QOpenGLPaintEnginePrivate *d)
+{
+    if (!d->has_antialiasing) {
+        glMatrixMode(GL_MODELVIEW);
+        glPopMatrix();
+        d->mv_matrix[3][0] -= 0.5;
+        d->mv_matrix[3][1] -= 0.5;
+    }
+}
+
+void QGLPrivateCleanup::cleanupGLContextRefs(const QGLContext *context)
+{
+    p->cleanupGLContextRefs(context);
+}
+
+
+static inline void updateTextureFilter(GLenum target, GLenum wrapMode, bool smoothPixmapTransform)
+{
+    if (smoothPixmapTransform) {
+        glTexParameterf(target, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+        glTexParameterf(target, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+    } else {
+        glTexParameterf(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+        glTexParameterf(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+    }
+    glTexParameterf(target, GL_TEXTURE_WRAP_S, wrapMode);
+    glTexParameterf(target, GL_TEXTURE_WRAP_T, wrapMode);
+}
+
+static inline QPainterPath strokeForPath(const QPainterPath &path, const QPen &cpen) {
+    QPainterPathStroker stroker;
+    if (cpen.style() == Qt::CustomDashLine)
+        stroker.setDashPattern(cpen.dashPattern());
+    else
+        stroker.setDashPattern(cpen.style());
+
+    stroker.setCapStyle(cpen.capStyle());
+    stroker.setJoinStyle(cpen.joinStyle());
+    stroker.setMiterLimit(cpen.miterLimit());
+    stroker.setDashOffset(cpen.dashOffset());
+
+    qreal width = cpen.widthF();
+    if (width == 0)
+        stroker.setWidth(1);
+    else
+        stroker.setWidth(width);
+
+    QPainterPath stroke = stroker.createStroke(path);
+    stroke.setFillRule(Qt::WindingFill);
+    return stroke;
+}
+
+class QGLStrokeCache
+{
+    struct CacheInfo
+    {
+        inline CacheInfo(QPainterPath p, QPainterPath sp, QPen stroke_pen) :
+            path(p), stroked_path(sp), pen(stroke_pen) {}
+        QPainterPath path;
+        QPainterPath stroked_path;
+        QPen pen;
+    };
+
+    typedef QMultiHash<quint64, CacheInfo> QGLStrokeTableHash;
+
+public:
+    inline QPainterPath getStrokedPath(const QPainterPath &path, const QPen &pen) {
+        quint64 hash_val = 0;
+
+        for (int i = 0; i < path.elementCount() && i <= 2; i++) {
+            hash_val += quint64(path.elementAt(i).x);
+            hash_val += quint64(path.elementAt(i).y);
+        }
+
+        QGLStrokeTableHash::const_iterator it = cache.constFind(hash_val);
+
+        if (it == cache.constEnd())
+            return addCacheElement(hash_val, path, pen);
+        else {
+            do {
+                const CacheInfo &cache_info = it.value();
+                if (cache_info.path == path && cache_info.pen == pen)
+                    return cache_info.stroked_path;
+                ++it;
+            } while (it != cache.constEnd() && it.key() == hash_val);
+            // an exact match for this path was not found, create new cache element
+            return addCacheElement(hash_val, path, pen);
+        }
+    }
+
+protected:
+    inline int maxCacheSize() const { return 500; }
+    QPainterPath addCacheElement(quint64 hash_val, QPainterPath path, const QPen &pen) {
+        if (cache.size() == maxCacheSize()) {
+            int elem_to_remove = qrand() % maxCacheSize();
+            cache.remove(cache.keys()[elem_to_remove]); // may remove more than 1, but OK
+        }
+        QPainterPath stroke = strokeForPath(path, pen);
+        CacheInfo cache_entry(path, stroke, pen);
+        return cache.insert(hash_val, cache_entry).value().stroked_path;
+    }
+
+    QGLStrokeTableHash cache;
+};
+
+Q_GLOBAL_STATIC(QGLStrokeCache, qt_opengl_stroke_cache)
+
+class QGLGradientCache : public QObject
+{
+    Q_OBJECT
+    struct CacheInfo
+    {
+        inline CacheInfo(QGradientStops s, qreal op, QGradient::InterpolationMode mode) :
+            stops(s), opacity(op), interpolationMode(mode) {}
+
+        GLuint texId;
+        QGradientStops stops;
+        qreal opacity;
+        QGradient::InterpolationMode interpolationMode;
+    };
+
+    typedef QMultiHash<quint64, CacheInfo> QGLGradientColorTableHash;
+
+public:
+    QGLGradientCache() : QObject(), buffer_ctx(0)
+    {
+        connect(QGLSignalProxy::instance(),
+                SIGNAL(aboutToDestroyContext(const QGLContext*)),
+                SLOT(cleanupGLContextRefs(const QGLContext*)));
+    }
+
+    inline GLuint getBuffer(const QGradient &gradient, qreal opacity, QGLContext *ctx) {
+        if (buffer_ctx && !QGLContext::areSharing(buffer_ctx, ctx))
+            cleanCache();
+
+        buffer_ctx = ctx;
+
+        quint64 hash_val = 0;
+
+        QGradientStops stops = gradient.stops();
+        for (int i = 0; i < stops.size() && i <= 2; i++)
+            hash_val += stops[i].second.rgba();
+
+        QGLGradientColorTableHash::const_iterator it = cache.constFind(hash_val);
+
+        if (it == cache.constEnd())
+            return addCacheElement(hash_val, gradient, opacity);
+        else {
+            do {
+                const CacheInfo &cache_info = it.value();
+                if (cache_info.stops == stops && cache_info.opacity == opacity && cache_info.interpolationMode == gradient.interpolationMode()) {
+                    return cache_info.texId;
+                }
+                ++it;
+            } while (it != cache.constEnd() && it.key() == hash_val);
+            // an exact match for these stops and opacity was not found, create new cache
+            return addCacheElement(hash_val, gradient, opacity);
+        }
+    }
+
+    inline int paletteSize() const { return 1024; }
+
+protected:
+    inline int maxCacheSize() const { return 60; }
+    inline void generateGradientColorTable(const QGradient& g,
+                                           uint *colorTable,
+                                           int size, qreal opacity) const;
+    GLuint addCacheElement(quint64 hash_val, const QGradient &gradient, qreal opacity) {
+        if (cache.size() == maxCacheSize()) {
+            int elem_to_remove = qrand() % maxCacheSize();
+            quint64 key = cache.keys()[elem_to_remove];
+
+            // need to call glDeleteTextures on each removed cache entry:
+            QGLGradientColorTableHash::const_iterator it = cache.constFind(key);
+            do {
+                glDeleteTextures(1, &it.value().texId);
+            } while (++it != cache.constEnd() && it.key() == key);
+            cache.remove(key); // may remove more than 1, but OK
+        }
+        CacheInfo cache_entry(gradient.stops(), opacity, gradient.interpolationMode());
+        uint buffer[1024];
+        generateGradientColorTable(gradient, buffer, paletteSize(), opacity);
+        glGenTextures(1, &cache_entry.texId);
+#ifndef QT_OPENGL_ES
+        glBindTexture(GL_TEXTURE_1D, cache_entry.texId);
+        glTexImage1D(GL_TEXTURE_1D, 0, GL_RGBA, paletteSize(),
+                     0, GL_BGRA, GL_UNSIGNED_BYTE, buffer);
+#else
+        // create 2D one-line texture instead. This requires an impl of manual GL_TEXGEN for all primitives
+#endif
+        return cache.insert(hash_val, cache_entry).value().texId;
+    }
+
+    void cleanCache() {
+        QGLShareContextScope scope(buffer_ctx);
+        QGLGradientColorTableHash::const_iterator it = cache.constBegin();
+        for (; it != cache.constEnd(); ++it) {
+            const CacheInfo &cache_info = it.value();
+            glDeleteTextures(1, &cache_info.texId);
+        }
+        cache.clear();
+    }
+
+    QGLGradientColorTableHash cache;
+
+    QGLContext *buffer_ctx;
+
+public Q_SLOTS:
+    void cleanupGLContextRefs(const QGLContext *context) {
+        if (context == buffer_ctx) {
+            cleanCache();
+            buffer_ctx = 0;
+        }
+    }
+};
+
+static inline uint endianColor(uint c)
+{
+#if Q_BYTE_ORDER == Q_LITTLE_ENDIAN
+    return c;
+#else
+    return ( (c << 24) & 0xff000000)
+           | ((c >> 24) & 0x000000ff)
+           | ((c << 8) & 0x00ff0000)
+           | ((c >> 8) & 0x0000ff00);
+#endif // Q_BYTE_ORDER
+}
+
+void QGLGradientCache::generateGradientColorTable(const QGradient& gradient, uint *colorTable, int size, qreal opacity) const
+{
+    int pos = 0;
+    QGradientStops s = gradient.stops();
+    QVector<uint> colors(s.size());
+
+    for (int i = 0; i < s.size(); ++i)
+        colors[i] = s[i].second.rgba();
+
+    bool colorInterpolation = (gradient.interpolationMode() == QGradient::ColorInterpolation);
+
+    uint alpha = qRound(opacity * 256);
+    uint current_color = ARGB_COMBINE_ALPHA(colors[0], alpha);
+    qreal incr = 1.0 / qreal(size);
+    qreal fpos = 1.5 * incr;
+    colorTable[pos++] = endianColor(PREMUL(current_color));
+
+    while (fpos <= s.first().first) {
+        colorTable[pos] = colorTable[pos - 1];
+        pos++;
+        fpos += incr;
+    }
+
+    if (colorInterpolation)
+        current_color = PREMUL(current_color);
+
+    for (int i = 0; i < s.size() - 1; ++i) {
+        qreal delta = 1/(s[i+1].first - s[i].first);
+        uint next_color = ARGB_COMBINE_ALPHA(colors[i+1], alpha);
+        if (colorInterpolation)
+            next_color = PREMUL(next_color);
+
+        while (fpos < s[i+1].first && pos < size) {
+            int dist = int(256 * ((fpos - s[i].first) * delta));
+            int idist = 256 - dist;
+            if (colorInterpolation)
+                colorTable[pos] = endianColor(INTERPOLATE_PIXEL_256(current_color, idist, next_color, dist));
+            else
+                colorTable[pos] = endianColor(PREMUL(INTERPOLATE_PIXEL_256(current_color, idist, next_color, dist)));
+            ++pos;
+            fpos += incr;
+        }
+        current_color = next_color;
+    }
+
+    Q_ASSERT(s.size() > 0);
+
+    uint last_color = endianColor(PREMUL(ARGB_COMBINE_ALPHA(colors[s.size() - 1], alpha)));
+    for (;pos < size; ++pos)
+        colorTable[pos] = last_color;
+
+    // Make sure the last color stop is represented at the end of the table
+    colorTable[size-1] = last_color;
+}
+
+#ifndef Q_WS_QWS
+Q_GLOBAL_STATIC(QGLGradientCache, qt_opengl_gradient_cache)
+#endif
+
+void QOpenGLPaintEnginePrivate::createGradientPaletteTexture(const QGradient& g)
+{
+#ifdef QT_OPENGL_ES //###
+    Q_UNUSED(g);
+#else
+    GLuint texId = qt_opengl_gradient_cache()->getBuffer(g, opacity, device->context());
+    glBindTexture(GL_TEXTURE_1D, texId);
+    grad_palette = texId;
+    if (g.spread() == QGradient::RepeatSpread || g.type() == QGradient::ConicalGradient)
+        glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+    else if (g.spread() == QGradient::ReflectSpread)
+        glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, GL_MIRRORED_REPEAT_IBM);
+    else
+        glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+
+    glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+    glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
+#endif
+}
+
+
+inline void QOpenGLPaintEnginePrivate::setGradientOps(const QBrush &brush, const QRectF &bounds)
+{
+    current_style = brush.style();
+
+    if (current_style < Qt::LinearGradientPattern || current_style > Qt::ConicalGradientPattern) {
+        setGLBrush(brush.color());
+        qt_glColor4ubv(brush_color);
+    }
+
+    updateGradient(brush, bounds);
+
+#ifndef QT_OPENGL_ES //### GLES does not have GL_TEXTURE_GEN_ so we are falling back for gradients
+    glDisable(GL_TEXTURE_GEN_S);
+    glDisable(GL_TEXTURE_1D);
+
+    if (current_style == Qt::LinearGradientPattern) {
+        if (high_quality_antialiasing || !has_fast_composition_mode) {
+            fragment_brush = FRAGMENT_PROGRAM_BRUSH_LINEAR;
+        } else {
+            glEnable(GL_TEXTURE_GEN_S);
+            glEnable(GL_TEXTURE_1D);
+        }
+    } else {
+        if (use_fragment_programs) {
+            if (current_style == Qt::RadialGradientPattern)
+                fragment_brush = FRAGMENT_PROGRAM_BRUSH_RADIAL;
+            else if (current_style == Qt::ConicalGradientPattern)
+                fragment_brush = FRAGMENT_PROGRAM_BRUSH_CONICAL;
+            else if (current_style == Qt::SolidPattern)
+                fragment_brush = FRAGMENT_PROGRAM_BRUSH_SOLID;
+            else if (current_style == Qt::TexturePattern && !brush.texture().isQBitmap())
+                fragment_brush = FRAGMENT_PROGRAM_BRUSH_TEXTURE;
+            else
+                fragment_brush = FRAGMENT_PROGRAM_BRUSH_PATTERN;
+        }
+    }
+#endif
+}
+
+QOpenGLPaintEngine::QOpenGLPaintEngine()
+    : QPaintEngineEx(*(new QOpenGLPaintEnginePrivate))
+{
+}
+
+QOpenGLPaintEngine::~QOpenGLPaintEngine()
+{
+}
+
+bool QOpenGLPaintEngine::begin(QPaintDevice *pdev)
+{
+    Q_D(QOpenGLPaintEngine);
+
+    if (pdev->devType() == QInternal::OpenGL)
+        d->device = static_cast<QGLPaintDevice*>(pdev);
+    else
+        d->device = QGLPaintDevice::getDevice(pdev);
+
+    if (!d->device)
+        return false;
+
+    d->offscreen.setDevice(pdev);
+    d->has_fast_pen = false;
+    d->inverseScale = 1;
+    d->opacity = 1;
+    d->device->beginPaint();
+    d->matrix = QTransform();
+    d->has_antialiasing = false;
+    d->high_quality_antialiasing = false;
+
+    QSize sz(d->device->size());
+    d->dirty_stencil = QRect(0, 0, sz.width(), sz.height());
+
+    d->use_emulation = false;
+
+    for (int i = 0; i < 4; ++i)
+        for (int j = 0; j < 4; ++j)
+            d->mv_matrix[i][j] = (i == j ? qreal(1) : qreal(0));
+
+    bool has_frag_program = (QGLExtensions::glExtensions() & QGLExtensions::FragmentProgram)
+                            && (pdev->devType() != QInternal::Pixmap);
+
+    QGLContext *ctx = const_cast<QGLContext *>(d->device->context());
+    if (!ctx) {
+        qWarning() << "QOpenGLPaintEngine: paint device doesn't have a valid GL context.";
+        return false;
+    }
+
+    if (has_frag_program)
+        has_frag_program = qt_resolve_frag_program_extensions(ctx) && qt_resolve_version_1_3_functions(ctx);
+
+    d->use_stencil_method = d->device->format().stencil()
+                            && (QGLExtensions::glExtensions() & QGLExtensions::StencilWrap);
+    if (d->device->format().directRendering()
+        && (d->use_stencil_method && QGLExtensions::glExtensions() & QGLExtensions::StencilTwoSide))
+        d->has_stencil_face_ext = qt_resolve_stencil_face_extension(ctx);
+
+#ifdef Q_WS_X11
+    static bool nvidia_workaround_needs_init = true;
+    if (nvidia_workaround_needs_init) {
+        // nvidia 9x.xx unix drivers contain a bug which requires us to
+        // call glFinish before releasing an fbo to avoid painting
+        // artifacts
+        const QByteArray versionString(reinterpret_cast<const char*>(glGetString(GL_VERSION)));
+        const int pos = versionString.indexOf("NVIDIA");
+        if (pos >= 0) {
+            const float nvidiaDriverVersion = versionString.mid(pos + strlen("NVIDIA")).toFloat();
+            qt_nvidiaFboNeedsFinish = nvidiaDriverVersion >= 90.0 && nvidiaDriverVersion < 100.0;
+        }
+        nvidia_workaround_needs_init = false;
+    }
+#endif
+
+#ifndef QT_OPENGL_ES
+    if (!ctx->d_ptr->internal_context) {
+        glGetDoublev(GL_PROJECTION_MATRIX, &d->projection_matrix[0][0]);
+        glPushClientAttrib(GL_CLIENT_ALL_ATTRIB_BITS);
+        glPushAttrib(GL_ALL_ATTRIB_BITS);
+
+        glDisableClientState(GL_EDGE_FLAG_ARRAY);
+        glDisableClientState(GL_INDEX_ARRAY);
+        glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+        glDisable(GL_TEXTURE_1D);
+        glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
+        glPixelTransferi(GL_MAP_COLOR, false);
+        glPixelTransferi(GL_MAP_STENCIL, false);
+        glDisable(GL_TEXTURE_GEN_S);
+
+        glPixelStorei(GL_PACK_SWAP_BYTES, false);
+        glPixelStorei(GL_PACK_LSB_FIRST, false);
+        glPixelStorei(GL_PACK_ROW_LENGTH, 0);
+        glPixelStorei(GL_PACK_SKIP_ROWS, 0);
+        glPixelStorei(GL_PACK_SKIP_PIXELS, 0);
+        glPixelStorei(GL_PACK_ALIGNMENT, 4);
+
+        glPixelStorei(GL_UNPACK_SWAP_BYTES, false);
+        glPixelStorei(GL_UNPACK_LSB_FIRST, false);
+        glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
+        glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
+        glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
+        glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
+
+        if (QGLFormat::openGLVersionFlags() & QGLFormat::OpenGL_Version_1_2) {
+            glPixelStorei(GL_PACK_IMAGE_HEIGHT, 0);
+            glPixelStorei(GL_PACK_SKIP_IMAGES, 0);
+            glPixelStorei(GL_UNPACK_IMAGE_HEIGHT, 0);
+            glPixelStorei(GL_UNPACK_SKIP_IMAGES, 0);
+        }
+    }
+#endif
+
+    if (!ctx->d_ptr->internal_context) {
+        glMatrixMode(GL_MODELVIEW);
+        glPushMatrix();
+        glMatrixMode(GL_TEXTURE);
+        glPushMatrix();
+        glLoadIdentity();
+        glDisableClientState(GL_COLOR_ARRAY);
+        glDisableClientState(GL_NORMAL_ARRAY);
+        glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+        glDisableClientState(GL_VERTEX_ARRAY);
+
+        if (QGLExtensions::glExtensions() & QGLExtensions::SampleBuffers)
+            glDisable(GL_MULTISAMPLE);
+        glDisable(GL_TEXTURE_2D);
+        if (QGLExtensions::glExtensions() & QGLExtensions::TextureRectangle)
+            glDisable(GL_TEXTURE_RECTANGLE_NV);
+        glDisable(GL_STENCIL_TEST);
+        glDisable(GL_CULL_FACE);
+        glDisable(GL_LIGHTING);
+        glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
+    }
+
+    d->offscreen.begin();
+
+    glViewport(0, 0, sz.width(), sz.height()); // XXX (Embedded): We need a solution for GLWidgets that draw in a part or a bigger surface...
+    glMatrixMode(GL_PROJECTION);
+    glLoadIdentity();
+#ifdef QT_OPENGL_ES
+    glOrthof(0, sz.width(), sz.height(), 0, -999999, 999999);
+#else
+    glOrtho(0, sz.width(), sz.height(), 0, -999999, 999999);
+#endif
+    glMatrixMode(GL_MODELVIEW);
+    glLoadIdentity();
+    glEnable(GL_BLEND);
+    d->composition_mode = QPainter::CompositionMode_SourceOver;
+
+#ifdef QT_OPENGL_ES
+    d->max_texture_size = ctx->d_func()->maxTextureSize();
+#else
+    bool shared_ctx = QGLContext::areSharing(d->device->context(), d->shader_ctx);
+
+    if (shared_ctx) {
+        d->max_texture_size = d->shader_ctx->d_func()->maxTextureSize();
+    } else {
+        d->max_texture_size = ctx->d_func()->maxTextureSize();
+
+        if (d->shader_ctx) {
+            d->shader_ctx->makeCurrent();
+            glBindTexture(GL_TEXTURE_1D, 0);
+            glDeleteTextures(1, &d->grad_palette);
+
+            if (has_frag_program && d->use_fragment_programs)
+                glDeleteTextures(1, &d->drawable_texture);
+            ctx->makeCurrent();
+        }
+        d->shader_ctx = d->device->context();
+        glGenTextures(1, &d->grad_palette);
+
+        qt_mask_texture_cache()->clearCache();
+        d->use_fragment_programs = has_frag_program;
+    }
+
+    if (d->use_fragment_programs && (!shared_ctx || sz.width() > d->drawable_texture_size.width()
+                                     || sz.height() > d->drawable_texture_size.height()))
+    {
+        // delete old texture if size has increased, otherwise it was deleted earlier
+        if (shared_ctx)
+            glDeleteTextures(1, &d->drawable_texture);
+
+        d->dirty_drawable_texture = true;
+        d->drawable_texture_size = QSize(qt_next_power_of_two(sz.width()),
+                                         qt_next_power_of_two(sz.height()));
+    }
+#endif
+
+    updateClipRegion(QRegion(), Qt::NoClip);
+    penChanged();
+    brushChanged();
+    opacityChanged();
+    compositionModeChanged();
+    renderHintsChanged();
+    transformChanged();
+    return true;
+}
+
+bool QOpenGLPaintEngine::end()
+{
+    Q_D(QOpenGLPaintEngine);
+    d->flushDrawQueue();
+    d->offscreen.end();
+    QGLContext *ctx = const_cast<QGLContext *>(d->device->context());
+    if (!ctx->d_ptr->internal_context) {
+        glMatrixMode(GL_TEXTURE);
+        glPopMatrix();
+        glMatrixMode(GL_MODELVIEW);
+        glPopMatrix();
+    }
+#ifndef QT_OPENGL_ES
+    if (ctx->d_ptr->internal_context) {
+        glDisable(GL_SCISSOR_TEST);
+    } else {
+        glMatrixMode(GL_PROJECTION);
+        glLoadMatrixd(&d->projection_matrix[0][0]);
+        glPopAttrib();
+        glPopClientAttrib();
+    }
+#endif
+    d->device->endPaint();
+    qt_mask_texture_cache()->maintainCache();
+
+#if defined(Q_WS_X11)
+    // clear out the references we hold for textures bound with the
+    // texture_from_pixmap extension
+    ctx->d_func()->boundPixmaps.clear();
+#endif
+    return true;
+}
+
+void QOpenGLPaintEngine::updateState(const QPaintEngineState &state)
+{
+    Q_D(QOpenGLPaintEngine);
+    QPaintEngine::DirtyFlags flags = state.state();
+
+    bool update_fast_pen = false;
+
+    if (flags & DirtyOpacity) {
+        update_fast_pen = true;
+        d->opacity = state.opacity();
+        if (d->opacity > 1.0f)
+            d->opacity = 1.0f;
+        if (d->opacity < 0.f)
+            d->opacity = 0.f;
+        // force update
+        flags |= DirtyPen;
+        flags |= DirtyBrush;
+    }
+
+    if (flags & DirtyTransform) {
+        update_fast_pen = true;
+        updateMatrix(state.transform());
+        // brush setup depends on transform state
+        if (state.brush().style() != Qt::NoBrush)
+            flags |= DirtyBrush;
+    }
+
+    if (flags & DirtyPen) {
+        update_fast_pen = true;
+        updatePen(state.pen());
+    }
+
+    if (flags & (DirtyBrush | DirtyBrushOrigin)) {
+        updateBrush(state.brush(), state.brushOrigin());
+    }
+
+    if (flags & DirtyFont) {
+        updateFont(state.font());
+    }
+
+    if (state.state() & DirtyClipEnabled) {
+        if (state.isClipEnabled())
+            updateClipRegion(painter()->clipRegion(), Qt::ReplaceClip);
+        else
+            updateClipRegion(QRegion(), Qt::NoClip);
+    }
+
+    if (flags & DirtyClipPath) {
+        updateClipRegion(QRegion(state.clipPath().toFillPolygon().toPolygon(),
+                                 state.clipPath().fillRule()),
+                         state.clipOperation());
+    }
+
+    if (flags & DirtyClipRegion) {
+        updateClipRegion(state.clipRegion(), state.clipOperation());
+    }
+
+    if (flags & DirtyHints) {
+        updateRenderHints(state.renderHints());
+    }
+
+    if (flags & DirtyCompositionMode) {
+        updateCompositionMode(state.compositionMode());
+    }
+
+    if (update_fast_pen) {
+        Q_D(QOpenGLPaintEngine);
+        qreal pen_width = d->cpen.widthF();
+        d->has_fast_pen =
+            ((pen_width == 0 || (pen_width <= 1 && d->txop <= QTransform::TxTranslate))
+             || d->cpen.isCosmetic())
+            && d->cpen.style() == Qt::SolidLine
+            && d->cpen.isSolid();
+    }
+}
+
+
+void QOpenGLPaintEnginePrivate::setInvMatrixData(const QTransform &inv_matrix)
+{
+    inv_matrix_data[0][0] = inv_matrix.m11();
+    inv_matrix_data[1][0] = inv_matrix.m21();
+    inv_matrix_data[2][0] = inv_matrix.m31();
+
+    inv_matrix_data[0][1] = inv_matrix.m12();
+    inv_matrix_data[1][1] = inv_matrix.m22();
+    inv_matrix_data[2][1] = inv_matrix.m32();
+
+    inv_matrix_data[0][2] = inv_matrix.m13();
+    inv_matrix_data[1][2] = inv_matrix.m23();
+    inv_matrix_data[2][2] = inv_matrix.m33();
+}
+
+
+void QOpenGLPaintEnginePrivate::updateGradient(const QBrush &brush, const QRectF &)
+{
+#ifdef QT_OPENGL_ES
+    Q_UNUSED(brush);
+#else
+    bool has_mirrored_repeat = QGLExtensions::glExtensions() & QGLExtensions::MirroredRepeat;
+    Qt::BrushStyle style = brush.style();
+
+    QTransform m = brush.transform();
+
+    if (has_mirrored_repeat && style == Qt::LinearGradientPattern) {
+        const QLinearGradient *g = static_cast<const QLinearGradient *>(brush.gradient());
+        QTransform m = brush.transform();
+        QPointF realStart = g->start();
+        QPointF realFinal = g->finalStop();
+        QPointF start = m.map(realStart);
+        QPointF stop;
+
+        if (qFuzzyCompare(m.m11(), m.m22()) && m.m12() == 0.0 && m.m21() == 0.0) {
+            // It is a simple uniform scale and/or translation
+            stop = m.map(realFinal);
+        } else {
+            // It is not enough to just transform the endpoints.
+            // We have to make sure the _pattern_ is transformed correctly.
+
+            qreal odx = realFinal.x() - realStart.x();
+            qreal ody = realFinal.y() - realStart.y();
+
+            // nx, ny and dx, dy are normal and gradient direction after transform:
+            qreal nx = m.m11()*ody - m.m21()*odx;
+            qreal ny = m.m12()*ody - m.m22()*odx;
+
+            qreal dx = m.m11()*odx + m.m21()*ody;
+            qreal dy = m.m12()*odx + m.m22()*ody;
+
+            qreal lx = 1 / (dx - dy*nx/ny);
+            qreal ly = 1 / (dy - dx*ny/nx);
+            qreal l = 1 / qSqrt(lx*lx+ly*ly);
+
+            stop = start + QPointF(-ny, nx) * l/qSqrt(nx*nx+ny*ny);
+        }
+
+        float tr[4], f;
+        tr[0] = stop.x() - start.x();
+        tr[1] = stop.y() - start.y();
+        f = 1.0 / (tr[0]*tr[0] + tr[1]*tr[1]);
+        tr[0] *= f;
+        tr[1] *= f;
+        tr[2] = 0;
+        tr[3] = -(start.x()*tr[0] + start.y()*tr[1]);
+        brush_color[0] = brush_color[1] = brush_color[2] = brush_color[3] = 255;
+        qt_glColor4ubv(brush_color);
+        glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
+        glTexGenfv(GL_S, GL_OBJECT_PLANE, tr);
+    }
+
+    if (use_fragment_programs) {
+        if (style == Qt::RadialGradientPattern) {
+            const QRadialGradient *g = static_cast<const QRadialGradient *>(brush.gradient());
+            QPointF realCenter = g->center();
+            QPointF realFocal  = g->focalPoint();
+            qreal   realRadius = g->radius();
+            QTransform translate(1, 0, 0, 1, -realFocal.x(), -realFocal.y());
+            QTransform gl_to_qt(1, 0, 0, -1, 0, pdev->height());
+            QTransform m = QTransform(matrix).translate(brush_origin.x(), brush_origin.y());
+            QTransform inv_matrix = gl_to_qt * (brush.transform() * m).inverted() * translate;
+
+            setInvMatrixData(inv_matrix);
+
+            fmp_data[0] = realCenter.x() - realFocal.x();
+            fmp_data[1] = realCenter.y() - realFocal.y();
+
+            fmp2_m_radius2_data[0] = -fmp_data[0] * fmp_data[0] - fmp_data[1] * fmp_data[1] + realRadius * realRadius;
+        } else if (style == Qt::ConicalGradientPattern) {
+            const QConicalGradient *g = static_cast<const QConicalGradient *>(brush.gradient());
+            QPointF realCenter = g->center();
+            QTransform translate(1, 0, 0, 1, -realCenter.x(), -realCenter.y());
+            QTransform gl_to_qt(1, 0, 0, -1, 0, pdev->height());
+            QTransform m = QTransform(matrix).translate(brush_origin.x(), brush_origin.y());
+            QTransform inv_matrix = gl_to_qt * (brush.transform() * m).inverted() * translate;
+
+            setInvMatrixData(inv_matrix);
+
+            angle_data[0] = -(g->angle() * 2 * Q_PI) / 360.0;
+        } else if (style == Qt::LinearGradientPattern) {
+            const QLinearGradient *g = static_cast<const QLinearGradient *>(brush.gradient());
+
+            QPointF realStart = g->start();
+            QPointF realFinal = g->finalStop();
+            QTransform translate(1, 0, 0, 1, -realStart.x(), -realStart.y());
+            QTransform gl_to_qt(1, 0, 0, -1, 0, pdev->height());
+            QTransform m = QTransform(matrix).translate(brush_origin.x(), brush_origin.y());
+            QTransform inv_matrix = gl_to_qt * (brush.transform() * m).inverted() * translate;
+
+            setInvMatrixData(inv_matrix);
+
+            QPointF l = realFinal - realStart;
+
+            linear_data[0] = l.x();
+            linear_data[1] = l.y();
+
+            linear_data[2] = 1.0f / (l.x() * l.x() + l.y() * l.y());
+        } else if (style != Qt::SolidPattern) {
+            QTransform gl_to_qt(1, 0, 0, -1, 0, pdev->height());
+            QTransform m = QTransform(matrix).translate(brush_origin.x(), brush_origin.y());
+            QTransform inv_matrix = gl_to_qt * (brush.transform() * m).inverted();
+
+            setInvMatrixData(inv_matrix);
+        }
+    }
+
+    if (style >= Qt::LinearGradientPattern && style <= Qt::ConicalGradientPattern) {
+        createGradientPaletteTexture(*brush.gradient());
+    }
+#endif
+}
+
+
+class QOpenGLTessellator : public QTessellator
+{
+public:
+    QOpenGLTessellator() {}
+    ~QOpenGLTessellator() { }
+    QGLTrapezoid toGLTrapezoid(const Trapezoid &trap);
+};
+
+QGLTrapezoid QOpenGLTessellator::toGLTrapezoid(const Trapezoid &trap)
+{
+    QGLTrapezoid t;
+
+    t.top = Q27Dot5ToDouble(trap.top);
+    t.bottom = Q27Dot5ToDouble(trap.bottom);
+
+    Q27Dot5 y = trap.topLeft->y - trap.bottomLeft->y;
+
+    qreal topLeftY = Q27Dot5ToDouble(trap.topLeft->y);
+
+    qreal tx = Q27Dot5ToDouble(trap.topLeft->x);
+    qreal m = (-tx + Q27Dot5ToDouble(trap.bottomLeft->x)) / Q27Dot5ToDouble(y);
+    t.topLeftX = tx + m * (topLeftY - t.top);
+    t.bottomLeftX = tx + m * (topLeftY - t.bottom);
+
+    y = trap.topRight->y - trap.bottomRight->y;
+
+    qreal topRightY = Q27Dot5ToDouble(trap.topRight->y);
+
+    tx = Q27Dot5ToDouble(trap.topRight->x);
+    m = (-tx + Q27Dot5ToDouble(trap.bottomRight->x)) / Q27Dot5ToDouble(y);
+
+    t.topRightX = tx + m * (topRightY - Q27Dot5ToDouble(trap.top));
+    t.bottomRightX = tx + m * (topRightY - Q27Dot5ToDouble(trap.bottom));
+
+    return t;
+}
+
+class QOpenGLImmediateModeTessellator : public QOpenGLTessellator
+{
+public:
+    void addTrap(const Trapezoid &trap);
+    void tessellate(const QPointF *points, int nPoints, bool winding) {
+        trapezoids.reserve(trapezoids.size() + nPoints);
+        setWinding(winding);
+        QTessellator::tessellate(points, nPoints);
+    }
+
+    QVector<QGLTrapezoid> trapezoids;
+};
+
+void QOpenGLImmediateModeTessellator::addTrap(const Trapezoid &trap)
+{
+    trapezoids.append(toGLTrapezoid(trap));
+}
+
+#ifndef QT_OPENGL_ES
+static void drawTrapezoid(const QGLTrapezoid &trap, const qreal offscreenHeight, QGLContext *ctx)
+{
+    qreal minX = qMin(trap.topLeftX, trap.bottomLeftX);
+    qreal maxX = qMax(trap.topRightX, trap.bottomRightX);
+
+    if (qFuzzyCompare(trap.top, trap.bottom) || qFuzzyCompare(minX, maxX) ||
+        (qFuzzyCompare(trap.topLeftX, trap.topRightX) && qFuzzyCompare(trap.bottomLeftX, trap.bottomRightX)))
+        return;
+
+    const qreal xpadding = 1.0;
+    const qreal ypadding = 1.0;
+
+    qreal topDist = offscreenHeight - trap.top;
+    qreal bottomDist = offscreenHeight - trap.bottom;
+
+    qreal reciprocal = bottomDist / (bottomDist - topDist);
+
+    qreal leftB = trap.bottomLeftX + (trap.topLeftX - trap.bottomLeftX) * reciprocal;
+    qreal rightB = trap.bottomRightX + (trap.topRightX - trap.bottomRightX) * reciprocal;
+
+    const bool topZero = qFuzzyIsNull(topDist);
+
+    reciprocal = topZero ? 1.0 / bottomDist : 1.0 / topDist;
+
+    qreal leftA = topZero ? (trap.bottomLeftX - leftB) * reciprocal : (trap.topLeftX - leftB) * reciprocal;
+    qreal rightA = topZero ? (trap.bottomRightX - rightB) * reciprocal : (trap.topRightX - rightB) * reciprocal;
+
+    qreal invLeftA = qFuzzyIsNull(leftA) ? 0.0 : 1.0 / leftA;
+    qreal invRightA = qFuzzyIsNull(rightA) ? 0.0 : 1.0 / rightA;
+
+    // fragment program needs the negative of invRightA as it mirrors the line
+    glTexCoord4f(topDist, bottomDist, invLeftA, -invRightA);
+    glMultiTexCoord4f(GL_TEXTURE1, leftA, leftB, rightA, rightB);
+
+    qreal topY = trap.top - ypadding;
+    qreal bottomY = trap.bottom + ypadding;
+
+    qreal bounds_bottomLeftX = leftA * (offscreenHeight - bottomY) + leftB;
+    qreal bounds_bottomRightX = rightA * (offscreenHeight - bottomY) + rightB;
+    qreal bounds_topLeftX = leftA * (offscreenHeight - topY) + leftB;
+    qreal bounds_topRightX = rightA * (offscreenHeight - topY) + rightB;
+
+    QPointF leftNormal(1, -leftA);
+    leftNormal /= qSqrt(leftNormal.x() * leftNormal.x() + leftNormal.y() * leftNormal.y());
+    QPointF rightNormal(1, -rightA);
+    rightNormal /= qSqrt(rightNormal.x() * rightNormal.x() + rightNormal.y() * rightNormal.y());
+
+    qreal left_padding = xpadding / qAbs(leftNormal.x());
+    qreal right_padding = xpadding / qAbs(rightNormal.x());
+
+    glVertex2d(bounds_topLeftX - left_padding, topY);
+    glVertex2d(bounds_topRightX + right_padding, topY);
+    glVertex2d(bounds_bottomRightX + right_padding, bottomY);
+    glVertex2d(bounds_bottomLeftX - left_padding, bottomY);
+
+    glTexCoord4f(0.0f, 0.0f, 0.0f, 1.0f);
+}
+#endif // !Q_WS_QWS
+
+class QOpenGLTrapezoidToArrayTessellator : public QOpenGLTessellator
+{
+public:
+    QOpenGLTrapezoidToArrayTessellator() : vertices(0), allocated(0), size(0) {}
+    ~QOpenGLTrapezoidToArrayTessellator() { free(vertices); }
+    GLfloat *vertices;
+    int allocated;
+    int size;
+    QRectF bounds;
+    void addTrap(const Trapezoid &trap);
+    void tessellate(const QPointF *points, int nPoints, bool winding) {
+        size = 0;
+        setWinding(winding);
+        bounds = QTessellator::tessellate(points, nPoints);
+    }
+};
+
+void QOpenGLTrapezoidToArrayTessellator::addTrap(const Trapezoid &trap)
+{
+    // On OpenGL ES we convert the trap to 2 triangles
+#ifndef QT_OPENGL_ES
+    if (size > allocated - 8) {
+#else
+    if (size > allocated - 12) {
+#endif
+        allocated = qMax(2*allocated, 512);
+        vertices = (GLfloat *)realloc(vertices, allocated * sizeof(GLfloat));
+    }
+
+    QGLTrapezoid t = toGLTrapezoid(trap);
+
+#ifndef QT_OPENGL_ES
+    vertices[size++] = t.topLeftX;
+    vertices[size++] = t.top;
+    vertices[size++] = t.topRightX;
+    vertices[size++] = t.top;
+    vertices[size++] = t.bottomRightX;
+    vertices[size++] = t.bottom;
+    vertices[size++] = t.bottomLeftX;
+    vertices[size++] = t.bottom;
+#else
+    // First triangle
+    vertices[size++] = t.topLeftX;
+    vertices[size++] = t.top;
+    vertices[size++] = t.topRightX;
+    vertices[size++] = t.top;
+    vertices[size++] = t.bottomRightX;
+    vertices[size++] = t.bottom;
+
+    // Second triangle
+    vertices[size++] = t.bottomLeftX;
+    vertices[size++] = t.bottom;
+    vertices[size++] = t.topLeftX;
+    vertices[size++] = t.top;
+    vertices[size++] = t.bottomRightX;
+    vertices[size++] = t.bottom;
+#endif
+}
+
+
+void QOpenGLPaintEnginePrivate::fillPolygon_dev(const QPointF *polygonPoints, int pointCount,
+                                                Qt::FillRule fill)
+{
+    QOpenGLTrapezoidToArrayTessellator tessellator;
+    tessellator.tessellate(polygonPoints, pointCount, fill == Qt::WindingFill);
+
+    DEBUG_ONCE qDebug() << "QOpenGLPaintEnginePrivate: Drawing polygon with" << pointCount << "points using fillPolygon_dev";
+
+    setGradientOps(cbrush, tessellator.bounds);
+
+    bool fast_style = current_style == Qt::LinearGradientPattern
+                      || current_style == Qt::SolidPattern;
+
+#ifndef QT_OPENGL_ES
+    GLenum geometry_mode = GL_QUADS;
+#else
+    GLenum geometry_mode = GL_TRIANGLES;
+#endif
+
+    if (use_fragment_programs && !(fast_style && has_fast_composition_mode)) {
+        composite(geometry_mode, tessellator.vertices, tessellator.size / 2);
+    } else {
+        glVertexPointer(2, GL_FLOAT, 0, tessellator.vertices);
+        glEnableClientState(GL_VERTEX_ARRAY);
+        glDrawArrays(geometry_mode, 0, tessellator.size/2);
+        glDisableClientState(GL_VERTEX_ARRAY);
+    }
+}
+
+
+inline void QOpenGLPaintEnginePrivate::lineToStencil(qreal x, qreal y)
+{
+    tess_points.add(QPointF(x, y));
+
+    if (x > max_x)
+        max_x = x;
+    else if (x < min_x)
+        min_x = x;
+    if (y > max_y)
+        max_y = y;
+    else if (y < min_y)
+        min_y = y;
+}
+
+inline void QOpenGLPaintEnginePrivate::curveToStencil(const QPointF &cp1, const QPointF &cp2, const QPointF &ep)
+{
+    qreal inverseScaleHalf = inverseScale / 2;
+
+    QBezier beziers[32];
+    beziers[0] = QBezier::fromPoints(tess_points.last(), cp1, cp2, ep);
+    QBezier *b = beziers;
+    while (b >= beziers) {
+        // check if we can pop the top bezier curve from the stack
+        qreal l = qAbs(b->x4 - b->x1) + qAbs(b->y4 - b->y1);
+        qreal d;
+        if (l > inverseScale) {
+            d = qAbs( (b->x4 - b->x1)*(b->y1 - b->y2) - (b->y4 - b->y1)*(b->x1 - b->x2) )
+                + qAbs( (b->x4 - b->x1)*(b->y1 - b->y3) - (b->y4 - b->y1)*(b->x1 - b->x3) );
+            d /= l;
+        } else {
+            d = qAbs(b->x1 - b->x2) + qAbs(b->y1 - b->y2) +
+                qAbs(b->x1 - b->x3) + qAbs(b->y1 - b->y3);
+        }
+        if (d < inverseScaleHalf || b == beziers + 31) {
+            // good enough, we pop it off and add the endpoint
+            lineToStencil(b->x4, b->y4);
+            --b;
+        } else {
+            // split, second half of the polygon goes lower into the stack
+            b->split(b+1, b);
+           ++b;
+        }
+    }
+}
+
+
+void QOpenGLPaintEnginePrivate::pathToVertexArrays(const QPainterPath &path)
+{
+    const QPainterPath::Element &first = path.elementAt(0);
+    min_x = max_x = first.x;
+    min_y = max_y = first.y;
+
+    tess_points.reset();
+    tess_points_stops.clear();
+    lineToStencil(first.x, first.y);
+
+    for (int i=1; i<path.elementCount(); ++i) {
+        const QPainterPath::Element &e = path.elementAt(i);
+        switch (e.type) {
+        case QPainterPath::MoveToElement:
+            tess_points_stops.append(tess_points.size());
+            lineToStencil(e.x, e.y);
+            break;
+        case QPainterPath::LineToElement:
+            lineToStencil(e.x, e.y);
+            break;
+        case QPainterPath::CurveToElement:
+            curveToStencil(e, path.elementAt(i+1), path.elementAt(i+2));
+            i+=2;
+            break;
+        default:
+            break;
+        }
+    }
+    lineToStencil(first.x, first.y);
+    tess_points_stops.append(tess_points.size());
+}
+
+
+void QOpenGLPaintEnginePrivate::drawVertexArrays()
+{
+    if (tess_points_stops.count() == 0)
+        return;
+    glEnableClientState(GL_VERTEX_ARRAY);
+    glVertexPointer(2, GL_DOUBLE, 0, tess_points.data());
+    int previous_stop = 0;
+    foreach(int stop, tess_points_stops) {
+        glDrawArrays(GL_TRIANGLE_FAN, previous_stop, stop-previous_stop);
+        previous_stop = stop;
+    }
+    glDisableClientState(GL_VERTEX_ARRAY);
+}
+
+void QOpenGLPaintEnginePrivate::fillVertexArray(Qt::FillRule fillRule)
+{
+    Q_Q(QOpenGLPaintEngine);
+
+    QRect rect = dirty_stencil.boundingRect();
+
+    if (use_system_clip)
+        rect = q->systemClip().intersected(dirty_stencil).boundingRect();
+
+    glStencilMask(~0);
+
+    if (!rect.isEmpty()) {
+        disableClipping();
+
+        glEnable(GL_SCISSOR_TEST);
+
+        const int left = rect.left();
+        const int width = rect.width();
+        const int bottom = device->size().height() - (rect.bottom() + 1);
+        const int height = rect.height();
+
+        glScissor(left, bottom, width, height);
+
+        glClearStencil(0);
+        glClear(GL_STENCIL_BUFFER_BIT);
+        dirty_stencil -= rect;
+
+        glDisable(GL_SCISSOR_TEST);
+
+        enableClipping();
+    }
+
+    // Enable stencil.
+    glEnable(GL_STENCIL_TEST);
+
+    // Disable color writes.
+    glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
+
+    GLuint stencilMask = 0;
+
+    if (fillRule == Qt::OddEvenFill) {
+        stencilMask = 1;
+
+        // Enable stencil writes.
+        glStencilMask(stencilMask);
+
+        // Set stencil xor mode.
+        glStencilOp(GL_KEEP, GL_KEEP, GL_INVERT);
+
+        // Disable stencil func.
+        glStencilFunc(GL_ALWAYS, 0, ~0);
+
+        drawVertexArrays();
+    } else if (fillRule == Qt::WindingFill) {
+        stencilMask = ~0;
+
+        if (has_stencil_face_ext) {
+            QGL_FUNC_CONTEXT;
+            glEnable(GL_STENCIL_TEST_TWO_SIDE_EXT);
+
+            glActiveStencilFaceEXT(GL_BACK);
+            glStencilOp(GL_KEEP, GL_KEEP, GL_DECR_WRAP_EXT);
+            glStencilFunc(GL_ALWAYS, 0, ~0);
+
+            glActiveStencilFaceEXT(GL_FRONT);
+            glStencilOp(GL_KEEP, GL_KEEP, GL_INCR_WRAP_EXT);
+            glStencilFunc(GL_ALWAYS, 0, ~0);
+
+            drawVertexArrays();
+
+            glDisable(GL_STENCIL_TEST_TWO_SIDE_EXT);
+        } else {
+            glStencilFunc(GL_ALWAYS, 0, ~0);
+            glEnable(GL_CULL_FACE);
+
+            glCullFace(GL_BACK);
+            glStencilOp(GL_KEEP, GL_KEEP, GL_INCR_WRAP_EXT);
+            drawVertexArrays();
+
+            glCullFace(GL_FRONT);
+            glStencilOp(GL_KEEP, GL_KEEP, GL_DECR_WRAP_EXT);
+            drawVertexArrays();
+
+            glDisable(GL_CULL_FACE);
+        }
+    }
+
+    // Enable color writes.
+    glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
+    glStencilMask(stencilMask);
+
+    setGradientOps(cbrush, QRectF(QPointF(min_x, min_y), QSizeF(max_x - min_x, max_y - min_y)));
+
+    bool fast_fill = has_fast_composition_mode && (current_style == Qt::LinearGradientPattern || current_style == Qt::SolidPattern);
+
+    if (use_fragment_programs && !fast_fill) {
+        DEBUG_ONCE qDebug() << "QOpenGLPaintEnginePrivate: Drawing polygon using stencil method (fragment programs)";
+        QRectF rect(QPointF(min_x, min_y), QSizeF(max_x - min_x, max_y - min_y));
+
+        // Enable stencil func.
+        glStencilFunc(GL_NOTEQUAL, 0, stencilMask);
+        glStencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE);
+        composite(rect);
+    } else {
+        DEBUG_ONCE qDebug() << "QOpenGLPaintEnginePrivate: Drawing polygon using stencil method (no fragment programs)";
+
+        // Enable stencil func.
+        glStencilFunc(GL_NOTEQUAL, 0, stencilMask);
+        glStencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE);
+#ifndef QT_OPENGL_ES
+        glBegin(GL_QUADS);
+        glVertex2f(min_x, min_y);
+        glVertex2f(max_x, min_y);
+        glVertex2f(max_x, max_y);
+        glVertex2f(min_x, max_y);
+        glEnd();
+#endif
+    }
+
+    // Disable stencil writes.
+    glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
+    glStencilMask(0);
+    glDisable(GL_STENCIL_TEST);
+}
+
+void QOpenGLPaintEnginePrivate::fillPath(const QPainterPath &path)
+{
+    if (path.isEmpty())
+        return;
+
+    if (use_stencil_method && !high_quality_antialiasing) {
+        pathToVertexArrays(path);
+        fillVertexArray(path.fillRule());
+        return;
+    }
+
+    glMatrixMode(GL_MODELVIEW);
+    glLoadIdentity();
+
+    if (high_quality_antialiasing)
+        drawOffscreenPath(path);
+    else {
+        QPolygonF poly = path.toFillPolygon(matrix);
+        fillPolygon_dev(poly.data(), poly.count(),
+                        path.fillRule());
+    }
+
+    updateGLMatrix();
+}
+
+
+static inline bool needsEmulation(Qt::BrushStyle style)
+{
+    return !(style == Qt::SolidPattern
+             || (style == Qt::LinearGradientPattern
+                 && (QGLExtensions::glExtensions() & QGLExtensions::MirroredRepeat)));
+}
+
+void QOpenGLPaintEnginePrivate::updateUseEmulation()
+{
+    use_emulation = !use_fragment_programs
+                    && ((has_pen && needsEmulation(pen_brush_style))
+                        || (has_brush && needsEmulation(brush_style)));
+}
+
+void QOpenGLPaintEngine::updatePen(const QPen &pen)
+{
+    Q_D(QOpenGLPaintEngine);
+    Qt::PenStyle pen_style = pen.style();
+    d->pen_brush_style = pen.brush().style();
+    d->cpen = pen;
+    d->has_pen = (pen_style != Qt::NoPen) && (d->pen_brush_style != Qt::NoBrush);
+    d->updateUseEmulation();
+
+    if (pen.isCosmetic()) {
+        GLfloat width = pen.widthF() == 0.0f ? 1.0f : pen.widthF();
+        glLineWidth(width);
+        glPointSize(width);
+    }
+
+    if (d->pen_brush_style >= Qt::LinearGradientPattern
+        && d->pen_brush_style <= Qt::ConicalGradientPattern)
+    {
+        d->setGLPen(Qt::white);
+    } else {
+        d->setGLPen(pen.color());
+    }
+
+    d->updateFastPen();
+}
+
+void QOpenGLPaintEngine::updateBrush(const QBrush &brush, const QPointF &origin)
+{
+    Q_D(QOpenGLPaintEngine);
+    d->cbrush = brush;
+    d->brush_style = brush.style();
+    d->brush_origin = origin;
+    d->has_brush = (d->brush_style != Qt::NoBrush);
+    d->updateUseEmulation();
+}
+
+void QOpenGLPaintEngine::updateFont(const QFont &)
+{
+}
+
+void QOpenGLPaintEngine::updateMatrix(const QTransform &mtx)
+{
+    Q_D(QOpenGLPaintEngine);
+
+    d->matrix = mtx;
+
+    d->mv_matrix[0][0] = mtx.m11();
+    d->mv_matrix[0][1] = mtx.m12();
+    d->mv_matrix[0][2] = 0;
+    d->mv_matrix[0][3] = mtx.m13();
+
+    d->mv_matrix[1][0] = mtx.m21();
+    d->mv_matrix[1][1] = mtx.m22();
+    d->mv_matrix[1][2] = 0;
+    d->mv_matrix[1][3] = mtx.m23();
+
+    d->mv_matrix[2][0] = 0;
+    d->mv_matrix[2][1] = 0;
+    d->mv_matrix[2][2] = 1;
+    d->mv_matrix[2][3] = 0;
+
+    d->mv_matrix[3][0] = mtx.dx();
+    d->mv_matrix[3][1] = mtx.dy();
+    d->mv_matrix[3][2] = 0;
+    d->mv_matrix[3][3] = mtx.m33();
+
+    d->txop = mtx.type();
+
+    // 1/10000 == 0.0001, so we have good enough res to cover curves
+    // that span the entire widget...
+    d->inverseScale = qMax(1 / qMax( qMax(qAbs(mtx.m11()), qAbs(mtx.m22())),
+                                     qMax(qAbs(mtx.m12()), qAbs(mtx.m21())) ),
+                           qreal(0.0001));
+
+    d->updateGLMatrix();
+    d->updateFastPen();
+}
+
+void QOpenGLPaintEnginePrivate::updateGLMatrix() const
+{
+    glMatrixMode(GL_MODELVIEW);
+#ifndef QT_OPENGL_ES
+    glLoadMatrixd(&mv_matrix[0][0]);
+#else
+    glLoadMatrixf(&mv_matrix[0][0]);
+#endif
+}
+
+void QOpenGLPaintEnginePrivate::disableClipping()
+{
+    glDisable(GL_DEPTH_TEST);
+    glDisable(GL_SCISSOR_TEST);
+}
+
+void QOpenGLPaintEnginePrivate::enableClipping()
+{
+    Q_Q(QOpenGLPaintEngine);
+    if (!q->state()->hasClipping)
+        return;
+
+    if (q->state()->fastClip.isEmpty())
+        glEnable(GL_DEPTH_TEST);
+    else
+        updateDepthClip(); // this will enable the scissor test
+}
+
+void QOpenGLPaintEnginePrivate::updateDepthClip()
+{
+    Q_Q(QOpenGLPaintEngine);
+
+    ++q->state()->depthClipId;
+
+    glDisable(GL_DEPTH_TEST);
+    glDisable(GL_SCISSOR_TEST);
+
+    if (!q->state()->hasClipping)
+        return;
+
+    QRect fastClip;
+    if (q->state()->clipEnabled) {
+        fastClip = q->state()->fastClip;
+    } else if (use_system_clip && q->systemClip().rects().count() == 1) {
+        fastClip = q->systemClip().rects().at(0);
+    }
+
+    if (!fastClip.isEmpty()) {
+        glEnable(GL_SCISSOR_TEST);
+
+        const int left = fastClip.left();
+        const int width = fastClip.width();
+        const int bottom = device->size().height() - (fastClip.bottom() + 1);
+        const int height = fastClip.height();
+
+        glScissor(left, bottom, width, height);
+        return;
+    }
+
+#if defined(QT_OPENGL_ES_1) || defined(QT_OPENGL_ES_2)
+    glClearDepthf(0.0f);
+#else
+    glClearDepth(0.0f);
+#endif
+
+    glEnable(GL_DEPTH_TEST);
+    glDepthMask(GL_TRUE);
+    glClear(GL_DEPTH_BUFFER_BIT);
+
+    glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
+    glDepthFunc(GL_ALWAYS);
+
+    const QVector<QRect> rects = q->state()->clipEnabled ? q->state()->clipRegion.rects() : q->systemClip().rects();
+
+    // rectangle count * 2 (triangles) * vertex count * component count (Z omitted)
+    QDataBuffer<GLfloat> clipVertex(rects.size()*2*3*2);
+    for (int i = 0; i < rects.size(); ++i) {
+        GLfloat x = GLfloat(rects.at(i).left());
+        GLfloat w = GLfloat(rects.at(i).width());
+        GLfloat h = GLfloat(rects.at(i).height());
+        GLfloat y = GLfloat(rects.at(i).top());
+
+        // First triangle
+        clipVertex.add(x);
+        clipVertex.add(y);
+
+        clipVertex.add(x);
+        clipVertex.add(y + h);
+
+        clipVertex.add(x + w);
+        clipVertex.add(y);
+
+        // Second triangle
+        clipVertex.add(x);
+        clipVertex.add(y + h);
+
+        clipVertex.add(x + w);
+        clipVertex.add(y + h);
+
+        clipVertex.add (x + w);
+        clipVertex.add(y);
+    }
+
+    if (rects.size()) {
+        glMatrixMode(GL_MODELVIEW);
+        glLoadIdentity();
+
+        glEnableClientState(GL_VERTEX_ARRAY);
+        glVertexPointer(2, GL_FLOAT, 0, clipVertex.data());
+
+        glDrawArrays(GL_TRIANGLES, 0, rects.size()*2*3);
+        glDisableClientState(GL_VERTEX_ARRAY);
+        updateGLMatrix();
+    }
+
+    glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
+    glDepthMask(GL_FALSE);
+    glDepthFunc(GL_LEQUAL);
+}
+
+void QOpenGLPaintEnginePrivate::systemStateChanged()
+{
+    Q_Q(QOpenGLPaintEngine);
+    if (q->painter()->hasClipping())
+        q->updateClipRegion(q->painter()->clipRegion(), Qt::ReplaceClip);
+    else
+        q->updateClipRegion(QRegion(), Qt::NoClip);
+}
+
+void QOpenGLPaintEngine::updateClipRegion(const QRegion &clipRegion, Qt::ClipOperation op)
+{
+    Q_D(QOpenGLPaintEngine);
+
+    // clipping is only supported when a stencil or depth buffer is
+    // available
+    if (!d->device->format().depth())
+        return;
+
+    d->use_system_clip = false;
+    QRegion sysClip = systemClip();
+    if (!sysClip.isEmpty()) {
+        if (d->pdev->devType() != QInternal::Widget) {
+            d->use_system_clip = true;
+        } else {
+#ifndef Q_WS_QWS
+            // Only use the system clip if we're currently rendering a widget with a GL painter.
+            if (d->currentClipWidget) {
+                QWidgetPrivate *widgetPrivate = qt_widget_private(d->currentClipWidget->window());
+                d->use_system_clip = widgetPrivate->extra && widgetPrivate->extra->inRenderWithPainter;
+            }
+#endif
+        }
+    }
+
+    d->flushDrawQueue();
+
+    if (op == Qt::NoClip && !d->use_system_clip) {
+        state()->hasClipping = false;
+        state()->clipRegion = QRegion();
+        d->updateDepthClip();
+        return;
+    }
+
+    bool isScreenClip = false;
+    if (!d->use_system_clip) {
+        QVector<QRect> untransformedRects = clipRegion.rects();
+
+        if (untransformedRects.size() == 1) {
+            QPainterPath path;
+            path.addRect(untransformedRects[0]);
+            path = d->matrix.map(path);
+
+            if (path.contains(QRectF(QPointF(), d->device->size())))
+                isScreenClip = true;
+        }
+    }
+
+    QRegion region = isScreenClip ? QRegion() : clipRegion * d->matrix;
+    switch (op) {
+    case Qt::NoClip:
+        if (!d->use_system_clip)
+            break;
+        state()->clipRegion = sysClip;
+        break;
+    case Qt::IntersectClip:
+        if (isScreenClip)
+            return;
+        if (state()->hasClipping) {
+            state()->clipRegion &= region;
+            break;
+        }
+        // fall through
+    case Qt::ReplaceClip:
+        if (d->use_system_clip)
+            state()->clipRegion = region & sysClip;
+        else
+            state()->clipRegion = region;
+        break;
+    case Qt::UniteClip:
+        state()->clipRegion |= region;
+        if (d->use_system_clip)
+            state()->clipRegion &= sysClip;
+        break;
+    default:
+        break;
+    }
+
+    if (isScreenClip) {
+        state()->hasClipping = false;
+        state()->clipRegion = QRegion();
+    } else {
+        state()->hasClipping = op != Qt::NoClip || d->use_system_clip;
+    }
+
+    if (state()->hasClipping && state()->clipRegion.rects().size() == 1)
+        state()->fastClip = state()->clipRegion.rects().at(0);
+    else
+        state()->fastClip = QRect();
+
+    d->updateDepthClip();
+}
+
+void QOpenGLPaintEngine::updateRenderHints(QPainter::RenderHints hints)
+{
+    Q_D(QOpenGLPaintEngine);
+
+    d->flushDrawQueue();
+    d->use_smooth_pixmap_transform = bool(hints & QPainter::SmoothPixmapTransform);
+    if ((hints & QPainter::Antialiasing) || (hints & QPainter::HighQualityAntialiasing)) {
+        if (d->use_fragment_programs && QGLOffscreen::isSupported()
+            && (hints & QPainter::HighQualityAntialiasing)) {
+            d->high_quality_antialiasing = true;
+        } else {
+            d->high_quality_antialiasing = false;
+            if (QGLExtensions::glExtensions() & QGLExtensions::SampleBuffers)
+                glEnable(GL_MULTISAMPLE);
+        }
+    } else {
+        d->high_quality_antialiasing = false;
+        if (QGLExtensions::glExtensions() & QGLExtensions::SampleBuffers)
+            glDisable(GL_MULTISAMPLE);
+    }
+
+    if (d->high_quality_antialiasing) {
+        d->offscreen.initialize();
+
+        if (!d->offscreen.isValid()) {
+            DEBUG_ONCE_STR("Unable to initialize offscreen, disabling high quality antialiasing");
+            d->high_quality_antialiasing = false;
+            if (QGLExtensions::glExtensions() & QGLExtensions::SampleBuffers)
+                glEnable(GL_MULTISAMPLE);
+        }
+    }
+
+    d->has_antialiasing = d->high_quality_antialiasing
+                          || ((hints & QPainter::Antialiasing)
+                              && (QGLExtensions::glExtensions() & QGLExtensions::SampleBuffers));
+}
+
+
+void QOpenGLPaintEnginePrivate::setPorterDuffData(float a, float b, float x, float y, float z)
+{
+    porterduff_ab_data[0] = a;
+    porterduff_ab_data[1] = b;
+
+    porterduff_xyz_data[0] = x;
+    porterduff_xyz_data[1] = y;
+    porterduff_xyz_data[2] = z;
+}
+
+
+void QOpenGLPaintEngine::updateCompositionMode(QPainter::CompositionMode composition_mode)
+{
+    Q_D(QOpenGLPaintEngine);
+
+    if (!d->use_fragment_programs && composition_mode > QPainter::CompositionMode_Plus)
+        composition_mode = QPainter::CompositionMode_SourceOver;
+
+    d->composition_mode = composition_mode;
+
+    d->has_fast_composition_mode = (!d->high_quality_antialiasing && composition_mode <= QPainter::CompositionMode_Plus)
+                                   || composition_mode == QPainter::CompositionMode_SourceOver
+                                   || composition_mode == QPainter::CompositionMode_Destination
+                                   || composition_mode == QPainter::CompositionMode_DestinationOver
+                                   || composition_mode == QPainter::CompositionMode_DestinationOut
+                                   || composition_mode == QPainter::CompositionMode_SourceAtop
+                                   || composition_mode == QPainter::CompositionMode_Xor
+                                   || composition_mode == QPainter::CompositionMode_Plus;
+
+    if (d->has_fast_composition_mode)
+        d->fragment_composition_mode = d->high_quality_antialiasing ? COMPOSITION_MODE_BLEND_MODE_MASK : COMPOSITION_MODE_BLEND_MODE_NOMASK;
+    else if (composition_mode <= QPainter::CompositionMode_Plus)
+        d->fragment_composition_mode = d->high_quality_antialiasing ? COMPOSITION_MODES_SIMPLE_PORTER_DUFF : COMPOSITION_MODES_SIMPLE_PORTER_DUFF_NOMASK;
+    else
+        switch (composition_mode) {
+        case QPainter::CompositionMode_Multiply:
+            d->fragment_composition_mode = d->high_quality_antialiasing ? COMPOSITION_MODES_MULTIPLY : COMPOSITION_MODES_MULTIPLY_NOMASK;
+            break;
+        case QPainter::CompositionMode_Screen:
+            d->fragment_composition_mode = d->high_quality_antialiasing ? COMPOSITION_MODES_SCREEN : COMPOSITION_MODES_SCREEN_NOMASK;
+            break;
+        case QPainter::CompositionMode_Overlay:
+            d->fragment_composition_mode = d->high_quality_antialiasing ? COMPOSITION_MODES_OVERLAY : COMPOSITION_MODES_OVERLAY_NOMASK;
+            break;
+        case QPainter::CompositionMode_Darken:
+            d->fragment_composition_mode = d->high_quality_antialiasing ? COMPOSITION_MODES_DARKEN : COMPOSITION_MODES_DARKEN_NOMASK;
+            break;
+        case QPainter::CompositionMode_Lighten:
+            d->fragment_composition_mode = d->high_quality_antialiasing ? COMPOSITION_MODES_LIGHTEN : COMPOSITION_MODES_LIGHTEN_NOMASK;
+            break;
+        case QPainter::CompositionMode_ColorDodge:
+            d->fragment_composition_mode = d->high_quality_antialiasing ? COMPOSITION_MODES_COLORDODGE : COMPOSITION_MODES_COLORDODGE_NOMASK;
+            break;
+        case QPainter::CompositionMode_ColorBurn:
+            d->fragment_composition_mode = d->high_quality_antialiasing ? COMPOSITION_MODES_COLORBURN : COMPOSITION_MODES_COLORBURN_NOMASK;
+            break;
+        case QPainter::CompositionMode_HardLight:
+            d->fragment_composition_mode = d->high_quality_antialiasing ? COMPOSITION_MODES_HARDLIGHT : COMPOSITION_MODES_HARDLIGHT_NOMASK;
+            break;
+        case QPainter::CompositionMode_SoftLight:
+            d->fragment_composition_mode = d->high_quality_antialiasing ? COMPOSITION_MODES_SOFTLIGHT : COMPOSITION_MODES_SOFTLIGHT_NOMASK;
+            break;
+        case QPainter::CompositionMode_Difference:
+            d->fragment_composition_mode = d->high_quality_antialiasing ? COMPOSITION_MODES_DIFFERENCE : COMPOSITION_MODES_DIFFERENCE_NOMASK;
+            break;
+        case QPainter::CompositionMode_Exclusion:
+            d->fragment_composition_mode = d->high_quality_antialiasing ? COMPOSITION_MODES_EXCLUSION : COMPOSITION_MODES_EXCLUSION_NOMASK;
+            break;
+        default:
+            Q_ASSERT(false);
+        }
+
+    switch(composition_mode) {
+    case QPainter::CompositionMode_DestinationOver:
+        glBlendFunc(GL_ONE_MINUS_DST_ALPHA, GL_ONE);
+        d->setPorterDuffData(0, 1, 1, 1, 1);
+        break;
+    case QPainter::CompositionMode_Clear:
+        glBlendFunc(GL_ZERO, GL_ZERO);
+        d->setPorterDuffData(0, 0, 0, 0, 0);
+        break;
+    case QPainter::CompositionMode_Source:
+        glBlendFunc(GL_ONE, GL_ZERO);
+        d->setPorterDuffData(1, 0, 1, 1, 0);
+        break;
+    case QPainter::CompositionMode_Destination:
+        glBlendFunc(GL_ZERO, GL_ONE);
+        d->setPorterDuffData(0, 1, 1, 0, 1);
+        break;
+    case QPainter::CompositionMode_SourceIn:
+        glBlendFunc(GL_DST_ALPHA, GL_ZERO);
+        d->setPorterDuffData(1, 0, 1, 0, 0);
+        break;
+    case QPainter::CompositionMode_DestinationIn:
+        glBlendFunc(GL_ZERO, GL_SRC_ALPHA);
+        d->setPorterDuffData(0, 1, 1, 0, 0);
+        break;
+    case QPainter::CompositionMode_SourceOut:
+        glBlendFunc(GL_ONE_MINUS_DST_ALPHA, GL_ZERO);
+        d->setPorterDuffData(0, 0, 0, 1, 0);
+        break;
+    case QPainter::CompositionMode_DestinationOut:
+        glBlendFunc(GL_ZERO, GL_ONE_MINUS_SRC_ALPHA);
+        d->setPorterDuffData(0, 0, 0, 0, 1);
+        break;
+    case QPainter::CompositionMode_SourceAtop:
+        glBlendFunc(GL_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+        d->setPorterDuffData(1, 0, 1, 0, 1);
+        break;
+    case QPainter::CompositionMode_DestinationAtop:
+        glBlendFunc(GL_ONE_MINUS_DST_ALPHA, GL_SRC_ALPHA);
+        d->setPorterDuffData(0, 1, 1, 1, 0);
+        break;
+    case QPainter::CompositionMode_Xor:
+        glBlendFunc(GL_ONE_MINUS_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+        d->setPorterDuffData(0, 0, 0, 1, 1);
+        break;
+    case QPainter::CompositionMode_SourceOver:
+        glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
+        d->setPorterDuffData(1, 0, 1, 1, 1);
+        break;
+    case QPainter::CompositionMode_Plus:
+        glBlendFunc(GL_ONE, GL_ONE);
+        d->setPorterDuffData(1, 1, 1, 1, 1);
+        break;
+    default:
+        break;
+    }
+}
+
+class QGLMaskGenerator
+{
+public:
+    QGLMaskGenerator(const QPainterPath &path, const QTransform &matrix, qreal stroke_width = -1)
+        : p(path),
+          m(matrix),
+          w(stroke_width)
+    {
+    }
+
+    virtual QRect screenRect() = 0;
+    virtual void drawMask(const QRect &rect) = 0;
+
+    QPainterPath path() const { return p; }
+    QTransform matrix() const { return m; }
+    qreal strokeWidth() const { return w; }
+
+    virtual ~QGLMaskGenerator() {}
+
+private:
+    QPainterPath p;
+    QTransform m;
+    qreal w;
+};
+
+void QGLMaskTextureCache::setOffscreenSize(const QSize &sz)
+{
+    Q_ASSERT(sz.width() == sz.height());
+
+    if (offscreenSize != sz) {
+        offscreenSize = sz;
+        clearCache();
+    }
+}
+
+void QGLMaskTextureCache::clearCache()
+{
+    cache.clear();
+
+    int quad_tree_size = 1;
+
+    for (int i = block_size; i < offscreenSize.width(); i *= 2)
+        quad_tree_size += quad_tree_size * 4;
+
+    for (int i = 0; i < 4; ++i) {
+        occupied_quadtree[i].resize(quad_tree_size);
+
+        occupied_quadtree[i][0].key = 0;
+        occupied_quadtree[i][0].largest_available_block = offscreenSize.width();
+        occupied_quadtree[i][0].largest_used_block = 0;
+
+        DEBUG_ONCE qDebug() << "QGLMaskTextureCache:: created quad tree of size" << quad_tree_size;
+    }
+}
+
+void QGLMaskTextureCache::setDrawableSize(const QSize &sz)
+{
+    drawableSize = sz;
+}
+
+void QGLMaskTextureCache::maintainCache()
+{
+    QGLTextureCacheHash::iterator it = cache.begin();
+    QGLTextureCacheHash::iterator end = cache.end();
+
+    while (it != end) {
+        CacheInfo &cache_info = it.value();
+        ++cache_info.age;
+
+        if (cache_info.age > 1) {
+            quadtreeInsert(cache_info.loc.channel, 0, cache_info.loc.rect);
+            it = cache.erase(it);
+        } else {
+            ++it;
+        }
+    }
+}
+
+//#define DISABLE_MASK_CACHE
+
+QGLMaskTextureCache::CacheLocation QGLMaskTextureCache::getMask(QGLMaskGenerator &maskGenerator, QOpenGLPaintEnginePrivate *e)
+{
+#ifndef DISABLE_MASK_CACHE
+    engine = e;
+
+    quint64 key = hash(maskGenerator.path(), maskGenerator.matrix(), maskGenerator.strokeWidth());
+
+    if (key == 0)
+        key = 1;
+
+    CacheInfo info(maskGenerator.path(), maskGenerator.matrix(), maskGenerator.strokeWidth());
+
+    QGLTextureCacheHash::iterator it = cache.find(key);
+
+    while (it != cache.end() && it.key() == key) {
+        CacheInfo &cache_info = it.value();
+        if (info.stroke_width == cache_info.stroke_width && info.matrix == cache_info.matrix && info.path == cache_info.path) {
+            DEBUG_ONCE_STR("QGLMaskTextureCache::getMask(): Using cached mask");
+
+            cache_info.age = 0;
+            return cache_info.loc;
+        }
+        ++it;
+    }
+
+    // mask was not found, create new mask
+
+    DEBUG_ONCE_STR("QGLMaskTextureCache::getMask(): Creating new mask...");
+
+    createMask(key, info, maskGenerator);
+
+    cache.insert(key, info);
+
+    return info.loc;
+#else
+    CacheInfo info(maskGenerator.path(), maskGenerator.matrix());
+    createMask(0, info, maskGenerator);
+    return info.loc;
+#endif
+}
+
+#ifndef FloatToQuint64
+#define FloatToQuint64(i) (quint64)((i) * 32)
+#endif
+
+quint64 QGLMaskTextureCache::hash(const QPainterPath &p, const QTransform &m, qreal w)
+{
+    Q_ASSERT(sizeof(quint64) == 8);
+
+    quint64 h = 0;
+
+    for (int i = 0; i < p.elementCount(); ++i) {
+        h += FloatToQuint64(p.elementAt(i).x) << 32;
+        h += FloatToQuint64(p.elementAt(i).y);
+        h += p.elementAt(i).type;
+    }
+
+    h += FloatToQuint64(m.m11());
+#ifndef Q_OS_WINCE    //  ###
+    //Compiler crashes for arm on WinCE
+    h += FloatToQuint64(m.m12()) << 4;
+    h += FloatToQuint64(m.m13()) << 8;
+    h += FloatToQuint64(m.m21()) << 12;
+    h += FloatToQuint64(m.m22()) << 16;
+    h += FloatToQuint64(m.m23()) << 20;
+    h += FloatToQuint64(m.m31()) << 24;
+    h += FloatToQuint64(m.m32()) << 28;
+#endif
+    h += FloatToQuint64(m.m33()) << 32;
+
+    h += FloatToQuint64(w);
+
+    return h;
+}
+
+void QGLMaskTextureCache::createMask(quint64 key, CacheInfo &info, QGLMaskGenerator &maskGenerator)
+{
+    info.loc.screen_rect = maskGenerator.screenRect();
+
+    if (info.loc.screen_rect.isEmpty()) {
+        info.loc.channel = 0;
+        info.loc.rect = QRect();
+        return;
+    }
+
+    quadtreeAllocate(key, info.loc.screen_rect.size(), &info.loc.rect, &info.loc.channel);
+
+    int ch = info.loc.channel;
+    glColorMask(ch == 0, ch == 1, ch == 2, ch == 3);
+
+    maskGenerator.drawMask(info.loc.rect);
+
+    glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
+}
+
+int QGLMaskTextureCache::quadtreeBlocksize(int node)
+{
+    DEBUG_ONCE qDebug() << "Offscreen size:" << offscreenSize.width();
+
+    int blocksize = offscreenSize.width();
+
+    while (node) {
+        node = (node - 1) / 4;
+        blocksize /= 2;
+    }
+
+    return blocksize;
+}
+
+QPoint QGLMaskTextureCache::quadtreeLocation(int node)
+{
+    QPoint location;
+    int blocksize = quadtreeBlocksize(node);
+
+    while (node) {
+        --node;
+
+        if (node & 1)
+            location.setX(location.x() + blocksize);
+
+        if (node & 2)
+            location.setY(location.y() + blocksize);
+
+        node /= 4;
+        blocksize *= 2;
+    }
+
+    return location;
+}
+
+void QGLMaskTextureCache::quadtreeUpdate(int channel, int node, int current_block_size)
+{
+    while (node) {
+        node = (node - 1) / 4;
+
+        int first_child = node * 4 + 1;
+
+        int largest_available = 0;
+        int largest_used = 0;
+
+        bool all_empty = true;
+
+        for (int i = 0; i < 4; ++i) {
+            largest_available = qMax(largest_available, occupied_quadtree[channel][first_child + i].largest_available_block);
+            largest_used = qMax(largest_used, occupied_quadtree[channel][first_child + i].largest_used_block);
+
+            if (occupied_quadtree[channel][first_child + i].largest_available_block < current_block_size)
+                all_empty = false;
+        }
+
+        current_block_size *= 2;
+
+        if (all_empty) {
+            occupied_quadtree[channel][node].largest_available_block = current_block_size;
+            occupied_quadtree[channel][node].largest_used_block = 0;
+        } else {
+            occupied_quadtree[channel][node].largest_available_block = largest_available;
+            occupied_quadtree[channel][node].largest_used_block = largest_used;
+        }
+    }
+}
+
+void QGLMaskTextureCache::quadtreeInsert(int channel, quint64 key, const QRect &rect, int node)
+{
+    int current_block_size = quadtreeBlocksize(node);
+    QPoint location = quadtreeLocation(node);
+    QRect relative = rect.translated(-location);
+
+    if (relative.left() >= current_block_size || relative.top() >= current_block_size
+        || relative.right() < 0 || relative.bottom() < 0)
+        return;
+
+    if (current_block_size == block_size // no more refining possible
+        || (relative.top() < block_size && relative.bottom() >= (current_block_size - block_size)
+            && relative.left() < block_size && relative.right() >= (current_block_size - block_size)))
+    {
+        if (key != 0) {
+            occupied_quadtree[channel][node].largest_available_block = 0;
+            occupied_quadtree[channel][node].largest_used_block = rect.width() * rect.height();
+        } else {
+            occupied_quadtree[channel][node].largest_available_block = current_block_size;
+            occupied_quadtree[channel][node].largest_used_block = 0;
+        }
+
+        occupied_quadtree[channel][node].key = key;
+
+        quadtreeUpdate(channel, node, current_block_size);
+    } else {
+        if (key && occupied_quadtree[channel][node].largest_available_block == current_block_size) {
+            // refining the quad tree, initialize child nodes
+            int half_block_size = current_block_size / 2;
+
+            int temp = node * 4 + 1;
+            for (int sibling = 0; sibling < 4; ++sibling) {
+                occupied_quadtree[channel][temp + sibling].largest_available_block = half_block_size;
+                occupied_quadtree[channel][temp + sibling].largest_used_block = 0;
+                occupied_quadtree[channel][temp + sibling].key = 0;
+            }
+        }
+
+        node = node * 4 + 1;
+
+        for (int sibling = 0; sibling < 4; ++sibling)
+            quadtreeInsert(channel, key, rect, node + sibling);
+    }
+}
+
+void QGLMaskTextureCache::quadtreeClear(int channel, const QRect &rect, int node)
+{
+    const quint64 &key = occupied_quadtree[channel][node].key;
+
+    int current_block_size = quadtreeBlocksize(node);
+    QPoint location = quadtreeLocation(node);
+
+    QRect relative = rect.translated(-location);
+
+    if (relative.left() >= current_block_size || relative.top() >= current_block_size
+        || relative.right() < 0 || relative.bottom() < 0)
+        return;
+
+    if (key != 0) {
+        QGLTextureCacheHash::iterator it = cache.find(key);
+
+        Q_ASSERT(it != cache.end());
+
+        while (it != cache.end() && it.key() == key) {
+            const CacheInfo &cache_info = it.value();
+
+            if (cache_info.loc.channel == channel
+                && cache_info.loc.rect.left() <= location.x()
+                && cache_info.loc.rect.top() <= location.y()
+                && cache_info.loc.rect.right() >= location.x()
+                && cache_info.loc.rect.bottom() >= location.y())
+            {
+                quadtreeInsert(channel, 0, cache_info.loc.rect);
+                engine->cacheItemErased(channel, cache_info.loc.rect);
+                cache.erase(it);
+                goto found;
+            } else {
+                ++it;
+            }
+        }
+
+        // if we don't find the key there's an error in the quadtree
+        Q_ASSERT(false);
+found:
+        Q_ASSERT(occupied_quadtree[channel][node].key == 0);
+    } else if (occupied_quadtree[channel][node].largest_available_block < current_block_size) {
+        Q_ASSERT(current_block_size >= block_size);
+
+        node = node * 4 + 1;
+
+        for (int sibling = 0; sibling < 4; ++sibling)
+            quadtreeClear(channel, rect, node + sibling);
+    }
+}
+
+bool QGLMaskTextureCache::quadtreeFindAvailableLocation(const QSize &size, QRect *rect, int *channel)
+{
+    int needed_block_size = qMax(1, qMax(size.width(), size.height()));
+
+    for (int i = 0; i < 4; ++i) {
+        int current_block_size = offscreenSize.width();
+
+        if (occupied_quadtree[i][0].largest_available_block >= needed_block_size) {
+            int node = 0;
+
+            while (current_block_size != occupied_quadtree[i][node].largest_available_block) {
+                Q_ASSERT(current_block_size > block_size);
+                Q_ASSERT(current_block_size > occupied_quadtree[i][node].largest_available_block);
+
+                node = node * 4 + 1;
+                current_block_size /= 2;
+
+                int sibling = 0;
+
+                while (occupied_quadtree[i][node + sibling].largest_available_block < needed_block_size)
+                    ++sibling;
+
+                Q_ASSERT(sibling < 4);
+                node += sibling;
+            }
+
+            *channel = i;
+            *rect = QRect(quadtreeLocation(node), size);
+
+            return true;
+        }
+    }
+
+    return false;
+}
+
+void QGLMaskTextureCache::quadtreeFindExistingLocation(const QSize &size, QRect *rect, int *channel)
+{
+    // try to pick small masks to throw out, as large masks are more expensive to recompute
+    *channel = qrand() % 4;
+    for (int i = 0; i < 4; ++i)
+        if (occupied_quadtree[i][0].largest_used_block < occupied_quadtree[*channel][0].largest_used_block)
+            *channel = i;
+
+    int needed_block_size = qt_next_power_of_two(qMax(1, qMax(size.width(), size.height())));
+
+    int node = 0;
+    int current_block_size = offscreenSize.width();
+
+    while (current_block_size > block_size
+           && current_block_size >= needed_block_size * 2
+           && occupied_quadtree[*channel][node].key == 0)
+    {
+        node = node * 4 + 1;
+
+        int sibling = 0;
+
+        for (int i = 1; i < 4; ++i) {
+            if (occupied_quadtree[*channel][node + i].largest_used_block
+                <= occupied_quadtree[*channel][node + sibling].largest_used_block)
+            {
+                sibling = i;
+            }
+        }
+
+        node += sibling;
+        current_block_size /= 2;
+    }
+
+    *rect = QRect(quadtreeLocation(node), size);
+}
+
+void QGLMaskTextureCache::quadtreeAllocate(quint64 key, const QSize &size, QRect *rect, int *channel)
+{
+#ifndef DISABLE_MASK_CACHE
+    if (!quadtreeFindAvailableLocation(size, rect, channel)) {
+        quadtreeFindExistingLocation(size, rect, channel);
+        quadtreeClear(*channel, *rect);
+    }
+
+    quadtreeInsert(*channel, key, *rect);
+#else
+    *channel = 0;
+    *rect = QRect(QPoint(), size);
+#endif
+}
+
+class QGLTrapezoidMaskGenerator : public QGLMaskGenerator
+{
+public:
+    QGLTrapezoidMaskGenerator(const QPainterPath &path, const QTransform &matrix, QGLOffscreen &offscreen, GLuint maskFragmentProgram, qreal strokeWidth = -1.0);
+
+    QRect screenRect();
+    void drawMask(const QRect &rect);
+
+private:
+    QRect screen_rect;
+    bool has_screen_rect;
+
+    QGLOffscreen *offscreen;
+
+    GLuint maskFragmentProgram;
+
+    virtual QVector<QGLTrapezoid> generateTrapezoids() = 0;
+    virtual QRect computeScreenRect() = 0;
+};
+
+class QGLPathMaskGenerator : public QGLTrapezoidMaskGenerator
+{
+public:
+    QGLPathMaskGenerator(const QPainterPath &path, const QTransform &matrix, QGLOffscreen &offscreen, GLuint maskFragmentProgram);
+
+private:
+    QVector<QGLTrapezoid> generateTrapezoids();
+    QRect computeScreenRect();
+
+    QPolygonF poly;
+};
+
+class QGLLineMaskGenerator : public QGLTrapezoidMaskGenerator
+{
+public:
+    QGLLineMaskGenerator(const QPainterPath &path, const QTransform &matrix, qreal width, QGLOffscreen &offscreen, GLuint maskFragmentProgram);
+
+private:
+    QVector<QGLTrapezoid> generateTrapezoids();
+    QRect computeScreenRect();
+
+    QPainterPath transformedPath;
+};
+
+class QGLRectMaskGenerator : public QGLTrapezoidMaskGenerator
+{
+public:
+    QGLRectMaskGenerator(const QPainterPath &path, const QTransform &matrix, QGLOffscreen &offscreen, GLuint maskFragmentProgram);
+
+private:
+    QVector<QGLTrapezoid> generateTrapezoids();
+    QRect computeScreenRect();
+
+    QPainterPath transformedPath;
+};
+
+class QGLEllipseMaskGenerator : public QGLMaskGenerator
+{
+public:
+    QGLEllipseMaskGenerator(const QRectF &rect, const QTransform &matrix, QGLOffscreen &offscreen, GLuint maskFragmentProgram, int *maskVariableLocations);
+
+    QRect screenRect();
+    void drawMask(const QRect &rect);
+
+private:
+    QRect screen_rect;
+
+    QRectF ellipseRect;
+
+    QGLOffscreen *offscreen;
+
+    GLuint maskFragmentProgram;
+
+    int *maskVariableLocations;
+
+    float vertexArray[4 * 2];
+};
+
+QGLTrapezoidMaskGenerator::QGLTrapezoidMaskGenerator(const QPainterPath &path, const QTransform &matrix, QGLOffscreen &offs, GLuint program, qreal stroke_width)
+    : QGLMaskGenerator(path, matrix, stroke_width)
+    ,  has_screen_rect(false)
+    ,  offscreen(&offs)
+    ,  maskFragmentProgram(program)
+{
+}
+
+extern void qt_add_rect_to_array(const QRectF &r, GLfloat *array);
+extern void qt_add_texcoords_to_array(qreal x1, qreal y1, qreal x2, qreal y2, GLfloat *array);
+
+void QGLTrapezoidMaskGenerator::drawMask(const QRect &rect)
+{
+#ifdef QT_OPENGL_ES
+    Q_UNUSED(rect);
+#else
+    glMatrixMode(GL_MODELVIEW);
+    glPushMatrix();
+    glLoadIdentity();
+
+    QGLContext *ctx = offscreen->context();
+    offscreen->bind();
+
+    glDisable(GL_TEXTURE_GEN_S);
+    glDisable(GL_TEXTURE_1D);
+
+    GLfloat vertexArray[4 * 2];
+    qt_add_rect_to_array(rect, vertexArray);
+
+    bool needs_scissor = rect != screen_rect;
+
+    if (needs_scissor) {
+        glEnable(GL_SCISSOR_TEST);
+        glScissor(rect.left(), offscreen->offscreenSize().height() - rect.bottom() - 1, rect.width(), rect.height());
+    }
+
+    QVector<QGLTrapezoid> trapezoids = generateTrapezoids();
+
+    // clear mask
+    glBlendFunc(GL_ZERO, GL_ZERO); // clear
+    glVertexPointer(2, GL_FLOAT, 0, vertexArray);
+    glEnableClientState(GL_VERTEX_ARRAY);
+    glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
+    glDisableClientState(GL_VERTEX_ARRAY);
+
+    glBlendFunc(GL_ONE, GL_ONE); // add mask
+    glEnable(GL_FRAGMENT_PROGRAM_ARB);
+    glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, maskFragmentProgram);
+
+    QPoint delta = rect.topLeft() - screen_rect.topLeft();
+    glBegin(GL_QUADS);
+    for (int i = 0; i < trapezoids.size(); ++i)
+        drawTrapezoid(trapezoids[i].translated(delta), offscreen->offscreenSize().height(), ctx);
+    glEnd();
+
+    if (needs_scissor)
+        glDisable(GL_SCISSOR_TEST);
+
+    glDisable(GL_FRAGMENT_PROGRAM_ARB);
+
+    glMatrixMode(GL_MODELVIEW);
+    glPopMatrix();
+#endif
+}
+
+QRect QGLTrapezoidMaskGenerator::screenRect()
+{
+    if (!has_screen_rect) {
+        screen_rect = computeScreenRect();
+        has_screen_rect = true;
+    }
+
+    screen_rect = screen_rect.intersected(QRect(QPoint(), offscreen->drawableSize()));
+
+    return screen_rect;
+}
+
+QGLPathMaskGenerator::QGLPathMaskGenerator(const QPainterPath &path, const QTransform &matrix, QGLOffscreen &offs, GLuint program)
+    : QGLTrapezoidMaskGenerator(path, matrix, offs, program)
+{
+}
+
+QRect QGLPathMaskGenerator::computeScreenRect()
+{
+    poly = path().toFillPolygon(matrix());
+    return poly.boundingRect().toAlignedRect();
+}
+
+QVector<QGLTrapezoid> QGLPathMaskGenerator::generateTrapezoids()
+{
+    QOpenGLImmediateModeTessellator tessellator;
+    tessellator.tessellate(poly.data(), poly.count(), path().fillRule() == Qt::WindingFill);
+    return tessellator.trapezoids;
+}
+
+QGLRectMaskGenerator::QGLRectMaskGenerator(const QPainterPath &path, const QTransform &matrix, QGLOffscreen &offs, GLuint program)
+    : QGLTrapezoidMaskGenerator(path, matrix, offs, program)
+{
+}
+
+QGLLineMaskGenerator::QGLLineMaskGenerator(const QPainterPath &path, const QTransform &matrix, qreal width, QGLOffscreen &offs, GLuint program)
+    : QGLTrapezoidMaskGenerator(path, matrix, offs, program, width)
+{
+}
+
+QRect QGLRectMaskGenerator::computeScreenRect()
+{
+    transformedPath = matrix().map(path());
+
+    return transformedPath.controlPointRect().adjusted(-1, -1, 1, 1).toAlignedRect();
+}
+
+QRect QGLLineMaskGenerator::computeScreenRect()
+{
+    transformedPath = matrix().map(path());
+
+    return transformedPath.controlPointRect().adjusted(-1, -1, 1, 1).toAlignedRect();
+}
+
+QVector<QGLTrapezoid> QGLLineMaskGenerator::generateTrapezoids()
+{
+    QOpenGLImmediateModeTessellator tessellator;
+    QPointF last;
+    for (int i = 0; i < transformedPath.elementCount(); ++i) {
+        QPainterPath::Element element = transformedPath.elementAt(i);
+
+        Q_ASSERT(!element.isCurveTo());
+
+        if (element.isLineTo())
+            tessellator.tessellateRect(last, element, strokeWidth());
+
+        last = element;
+    }
+
+    return tessellator.trapezoids;
+}
+
+QVector<QGLTrapezoid> QGLRectMaskGenerator::generateTrapezoids()
+{
+    Q_ASSERT(transformedPath.elementCount() == 5);
+
+    QOpenGLImmediateModeTessellator tessellator;
+    if (matrix().type() <= QTransform::TxScale) {
+        QPointF a = transformedPath.elementAt(0);
+        QPointF b = transformedPath.elementAt(1);
+        QPointF c = transformedPath.elementAt(2);
+        QPointF d = transformedPath.elementAt(3);
+
+        QPointF first = (a + d) * 0.5;
+        QPointF last = (b + c) * 0.5;
+
+        QPointF delta = a - d;
+
+        // manhattan distance (no rotation)
+        qreal width = qAbs(delta.x()) + qAbs(delta.y());
+
+        Q_ASSERT(qFuzzyIsNull(delta.x()) || qFuzzyIsNull(delta.y()));
+
+        tessellator.tessellateRect(first, last, width);
+    } else {
+        QPointF points[5];
+
+        for (int i = 0; i < 5; ++i)
+            points[i] = transformedPath.elementAt(i);
+
+        tessellator.tessellateConvex(points, 5);
+    }
+    return tessellator.trapezoids;
+}
+
+static QPainterPath ellipseRectToPath(const QRectF &rect)
+{
+    QPainterPath path;
+    path.addEllipse(rect);
+    return path;
+}
+
+QGLEllipseMaskGenerator::QGLEllipseMaskGenerator(const QRectF &rect, const QTransform &matrix, QGLOffscreen &offs, GLuint program, int *locations)
+    : QGLMaskGenerator(ellipseRectToPath(rect), matrix),
+      ellipseRect(rect),
+      offscreen(&offs),
+      maskFragmentProgram(program),
+      maskVariableLocations(locations)
+{
+}
+
+QRect QGLEllipseMaskGenerator::screenRect()
+{
+    QPointF center = ellipseRect.center();
+
+    QPointF points[] = {
+        QPointF(ellipseRect.left(), center.y()),
+        QPointF(ellipseRect.right(), center.y()),
+        QPointF(center.x(), ellipseRect.top()),
+        QPointF(center.x(), ellipseRect.bottom())
+    };
+
+    qreal min_screen_delta_len = QREAL_MAX;
+
+    for (int i = 0; i < 4; ++i) {
+        QPointF delta = points[i] - center;
+
+        // normalize
+        delta /= qSqrt(delta.x() * delta.x() + delta.y() * delta.y());
+
+        QPointF screen_delta(matrix().m11() * delta.x() + matrix().m21() * delta.y(),
+                             matrix().m12() * delta.x() + matrix().m22() * delta.y());
+
+        min_screen_delta_len = qMin(min_screen_delta_len,
+                                    qreal(qSqrt(screen_delta.x() * screen_delta.x() + screen_delta.y() * screen_delta.y())));
+    }
+
+    const qreal padding = 2.0f;
+
+    qreal grow = padding / min_screen_delta_len;
+
+    QRectF boundingRect = ellipseRect.adjusted(-grow, -grow, grow, grow);
+
+    boundingRect = matrix().mapRect(boundingRect);
+
+    QPointF p(0.5, 0.5);
+
+    screen_rect = QRect((boundingRect.topLeft() - p).toPoint(),
+                        (boundingRect.bottomRight() + p).toPoint());
+
+    return screen_rect;
+}
+
+void QGLEllipseMaskGenerator::drawMask(const QRect &rect)
+{
+#ifdef QT_OPENGL_ES
+    Q_UNUSED(rect);
+#else
+    QGLContext *ctx = offscreen->context();
+    offscreen->bind();
+
+    glDisable(GL_TEXTURE_GEN_S);
+    glDisable(GL_TEXTURE_1D);
+
+    // fragment program needs the inverse radii of the ellipse
+    glTexCoord2f(1.0f / (ellipseRect.width() * 0.5f),
+                 1.0f / (ellipseRect.height() * 0.5f));
+
+    QTransform translate(1, 0, 0, 1, -ellipseRect.center().x(), -ellipseRect.center().y());
+    QTransform gl_to_qt(1, 0, 0, -1, 0, offscreen->drawableSize().height());
+    QTransform inv_matrix = gl_to_qt * matrix().inverted() * translate;
+
+    float m[3][4] = { { float(inv_matrix.m11()), float(inv_matrix.m12()), float(inv_matrix.m13()) },
+                      { float(inv_matrix.m21()), float(inv_matrix.m22()), float(inv_matrix.m23()) },
+                      { float(inv_matrix.m31()), float(inv_matrix.m32()), float(inv_matrix.m33()) } };
+
+    QPoint offs(screen_rect.left() - rect.left(), (offscreen->drawableSize().height() - screen_rect.top())
+                                                - (offscreen->offscreenSize().height() - rect.top()));
+
+    // last component needs to be 1.0f to avoid Nvidia bug on linux
+    float ellipse_offset[4] = { float(offs.x()), float(offs.y()), 0.0f, 1.0f };
+
+    GLfloat vertexArray[4 * 2];
+    qt_add_rect_to_array(rect, vertexArray);
+
+    glBlendFunc(GL_ONE, GL_ZERO); // set mask
+    glEnable(GL_FRAGMENT_PROGRAM_ARB);
+    glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, maskFragmentProgram);
+
+    glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, maskVariableLocations[VAR_INV_MATRIX_M0], m[0]);
+    glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, maskVariableLocations[VAR_INV_MATRIX_M1], m[1]);
+    glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, maskVariableLocations[VAR_INV_MATRIX_M2], m[2]);
+
+    glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, maskVariableLocations[VAR_ELLIPSE_OFFSET], ellipse_offset);
+
+    glEnableClientState(GL_VERTEX_ARRAY);
+    glVertexPointer(2, GL_FLOAT, 0, vertexArray);
+    glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
+    glDisableClientState(GL_VERTEX_ARRAY);
+    glDisable(GL_FRAGMENT_PROGRAM_ARB);
+#endif
+}
+
+void QOpenGLPaintEnginePrivate::drawOffscreenPath(const QPainterPath &path)
+{
+#ifdef Q_WS_QWS
+    Q_UNUSED(path);
+#else
+    DEBUG_ONCE_STR("QOpenGLPaintEnginePrivate::drawOffscreenPath()");
+
+    disableClipping();
+
+    GLuint program = qt_gl_program_cache()->getProgram(device->context(),
+                                                       FRAGMENT_PROGRAM_MASK_TRAPEZOID_AA, 0, true);
+    QGLPathMaskGenerator maskGenerator(path, matrix, offscreen, program);
+    addItem(qt_mask_texture_cache()->getMask(maskGenerator, this));
+
+    enableClipping();
+#endif
+}
+
+void QOpenGLPaintEnginePrivate::drawFastRect(const QRectF &r)
+{
+    Q_Q(QOpenGLPaintEngine);
+    DEBUG_ONCE_STR("QOpenGLPaintEngine::drawRects(): drawing fast rect");
+
+    GLfloat vertexArray[10];
+    qt_add_rect_to_array(r, vertexArray);
+
+    if (has_pen)
+        QOpenGLCoordinateOffset::enableOffset(this);
+
+    if (has_brush) {
+        flushDrawQueue();
+
+        bool temp = high_quality_antialiasing;
+        high_quality_antialiasing = false;
+
+        q->updateCompositionMode(composition_mode);
+
+        setGradientOps(cbrush, r);
+
+        bool fast_style = current_style == Qt::LinearGradientPattern
+                          || current_style == Qt::SolidPattern;
+
+        if (fast_style && has_fast_composition_mode) {
+            glEnableClientState(GL_VERTEX_ARRAY);
+            glVertexPointer(2, GL_FLOAT, 0, vertexArray);
+            glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
+            glDisableClientState(GL_VERTEX_ARRAY);
+        } else {
+            composite(r);
+        }
+
+        high_quality_antialiasing = temp;
+
+        q->updateCompositionMode(composition_mode);
+    }
+
+    if (has_pen) {
+        if (has_fast_pen && !high_quality_antialiasing) {
+            setGradientOps(cpen.brush(), r);
+
+            vertexArray[8] = vertexArray[0];
+            vertexArray[9] = vertexArray[1];
+
+            glVertexPointer(2, GL_FLOAT, 0, vertexArray);
+            glEnableClientState(GL_VERTEX_ARRAY);
+            glDrawArrays(GL_LINE_STRIP, 0, 5);
+            glDisableClientState(GL_VERTEX_ARRAY);
+        } else {
+            QPainterPath path;
+            path.setFillRule(Qt::WindingFill);
+
+            qreal left = r.left();
+            qreal right = r.right();
+            qreal top = r.top();
+            qreal bottom = r.bottom();
+
+            path.moveTo(left, top);
+            path.lineTo(right, top);
+            path.lineTo(right, bottom);
+            path.lineTo(left, bottom);
+            path.lineTo(left, top);
+
+            strokePath(path, false);
+        }
+
+        QOpenGLCoordinateOffset::disableOffset(this);
+    }
+}
+
+bool QOpenGLPaintEnginePrivate::isFastRect(const QRectF &rect)
+{
+    if (matrix.type() < QTransform::TxRotate) {
+        QRectF r = matrix.mapRect(rect);
+        return r.topLeft().toPoint() == r.topLeft()
+            && r.bottomRight().toPoint() == r.bottomRight();
+    }
+
+    return false;
+}
+
+void QOpenGLPaintEngine::drawRects(const QRect *rects, int rectCount)
+{
+    struct RectF {
+        qreal x;
+        qreal y;
+        qreal w;
+        qreal h;
+    };
+    Q_ASSERT(sizeof(RectF) == sizeof(QRectF));
+    RectF fr[256];
+    while (rectCount) {
+        int i = 0;
+        while (i < rectCount && i < 256) {
+            fr[i].x = rects[i].x();
+            fr[i].y = rects[i].y();
+            fr[i].w = rects[i].width();
+            fr[i].h = rects[i].height();
+            ++i;
+        }
+        drawRects((QRectF *)(void *)fr, i);
+        rects += i;
+        rectCount -= i;
+    }
+}
+
+void QOpenGLPaintEngine::drawRects(const QRectF *rects, int rectCount)
+{
+    Q_D(QOpenGLPaintEngine);
+
+    if (d->use_emulation) {
+        QPaintEngineEx::drawRects(rects, rectCount);
+        return;
+    }
+
+    for (int i=0; i<rectCount; ++i) {
+        const QRectF &r = rects[i];
+
+        // optimization for rects which can be drawn aliased
+        if (!d->high_quality_antialiasing || d->isFastRect(r)) {
+            d->drawFastRect(r);
+        } else {
+            QPainterPath path;
+            path.addRect(r);
+
+            if (d->has_brush) {
+                d->disableClipping();
+                GLuint program = qt_gl_program_cache()->getProgram(d->device->context(),
+                                                                   FRAGMENT_PROGRAM_MASK_TRAPEZOID_AA, 0, true);
+
+                if (d->matrix.type() >= QTransform::TxProject) {
+                    QGLPathMaskGenerator maskGenerator(path, d->matrix, d->offscreen, program);
+                    d->addItem(qt_mask_texture_cache()->getMask(maskGenerator, d));
+                } else {
+                    QGLRectMaskGenerator maskGenerator(path, d->matrix, d->offscreen, program);
+                    d->addItem(qt_mask_texture_cache()->getMask(maskGenerator, d));
+                }
+
+                d->enableClipping();
+            }
+
+            if (d->has_pen) {
+                if (d->has_fast_pen)
+                    d->strokeLines(path);
+                else
+                    d->strokePath(path, false);
+            }
+        }
+    }
+}
+
+static void addQuadAsTriangle(GLfloat *quad, GLfloat *triangle)
+{
+    triangle[0] = quad[0];
+    triangle[1] = quad[1];
+
+    triangle[2] = quad[2];
+    triangle[3] = quad[3];
+
+    triangle[4] = quad[4];
+    triangle[5] = quad[5];
+
+    triangle[6] = quad[4];
+    triangle[7] = quad[5];
+
+    triangle[8] = quad[6];
+    triangle[9] = quad[7];
+
+    triangle[10] = quad[0];
+    triangle[11] = quad[1];
+}
+
+void QOpenGLPaintEngine::drawPoints(const QPoint *points, int pointCount)
+{
+    Q_ASSERT(sizeof(QT_PointF) == sizeof(QPointF));
+    QT_PointF fp[256];
+    while (pointCount) {
+        int i = 0;
+        while (i < pointCount && i < 256) {
+            fp[i].x = points[i].x();
+            fp[i].y = points[i].y();
+            ++i;
+        }
+        drawPoints((QPointF *)(void *)fp, i);
+        points += i;
+        pointCount -= i;
+    }
+}
+
+void QOpenGLPaintEngine::drawPoints(const QPointF *points, int pointCount)
+{
+    Q_D(QOpenGLPaintEngine);
+
+    if (d->use_emulation) {
+        QPaintEngineEx::drawPoints(points, pointCount);
+        return;
+    }
+
+    d->setGradientOps(d->cpen.brush(), QRectF());
+
+    if (!d->cpen.isCosmetic() || d->high_quality_antialiasing) {
+        Qt::PenCapStyle capStyle = d->cpen.capStyle();
+        if (capStyle == Qt::FlatCap)
+            d->cpen.setCapStyle(Qt::SquareCap);
+        QPaintEngine::drawPoints(points, pointCount);
+        d->cpen.setCapStyle(capStyle);
+        return;
+    }
+
+    d->flushDrawQueue();
+
+    if (d->has_fast_pen) {
+        QVarLengthArray<GLfloat> vertexArray(6 * pointCount);
+
+        glMatrixMode(GL_MODELVIEW);
+        glPushMatrix();
+        glLoadIdentity();
+
+        int j = 0;
+        for (int i = 0; i < pointCount; ++i) {
+            QPointF mapped = d->matrix.map(points[i]);
+
+            GLfloat x = GLfloat(qRound(mapped.x()));
+            GLfloat y = GLfloat(qRound(mapped.y()));
+
+            vertexArray[j++] = x;
+            vertexArray[j++] = y - 0.5f;
+
+            vertexArray[j++] = x + 1.5f;
+            vertexArray[j++] = y + 1.0f;
+
+            vertexArray[j++] = x;
+            vertexArray[j++] = y + 1.0f;
+        }
+
+        glEnableClientState(GL_VERTEX_ARRAY);
+
+        glVertexPointer(2, GL_FLOAT, 0, vertexArray.constData());
+        glDrawArrays(GL_TRIANGLES, 0, pointCount*3);
+
+        glDisableClientState(GL_VERTEX_ARRAY);
+
+        glPopMatrix();
+        return;
+    }
+
+    const qreal *vertexArray = reinterpret_cast<const qreal*>(&points[0]);
+
+    if (sizeof(qreal) == sizeof(double)) {
+        Q_ASSERT(sizeof(QPointF) == 16);
+        glVertexPointer(2, GL_DOUBLE, 0, vertexArray);
+    }
+    else {
+        Q_ASSERT(sizeof(QPointF) == 8);
+        glVertexPointer(2, GL_FLOAT, 0, vertexArray);
+    }
+
+    glEnableClientState(GL_VERTEX_ARRAY);
+    glDrawArrays(GL_POINTS, 0, pointCount);
+    glDisableClientState(GL_VERTEX_ARRAY);
+}
+
+void QOpenGLPaintEngine::drawLines(const QLine *lines, int lineCount)
+{
+    struct PointF {
+        qreal x;
+        qreal y;
+    };
+    struct LineF {
+        PointF p1;
+        PointF p2;
+    };
+    Q_ASSERT(sizeof(PointF) == sizeof(QPointF));
+    Q_ASSERT(sizeof(LineF) == sizeof(QLineF));
+    LineF fl[256];
+    while (lineCount) {
+        int i = 0;
+        while (i < lineCount && i < 256) {
+            fl[i].p1.x = lines[i].x1();
+            fl[i].p1.y = lines[i].y1();
+            fl[i].p2.x = lines[i].x2();
+            fl[i].p2.y = lines[i].y2();
+            ++i;
+        }
+        drawLines((QLineF *)(void *)fl, i);
+        lines += i;
+        lineCount -= i;
+    }
+}
+
+void QOpenGLPaintEngine::drawLines(const QLineF *lines, int lineCount)
+{
+    Q_D(QOpenGLPaintEngine);
+
+    if (d->use_emulation) {
+        QPaintEngineEx::drawLines(lines, lineCount);
+        return;
+    }
+
+    if (d->has_pen) {
+        QOpenGLCoordinateOffset offset(d);
+        if (d->has_fast_pen && !d->high_quality_antialiasing) {
+            //### gradient resolving on lines isn't correct
+            d->setGradientOps(d->cpen.brush(), QRectF());
+
+            bool useRects = false;
+            // scale or 90 degree rotation?
+            if (d->matrix.type() <= QTransform::TxTranslate
+                || (!d->cpen.isCosmetic()
+                    && (d->matrix.type() <= QTransform::TxScale
+                        || (d->matrix.type() == QTransform::TxRotate
+                            && d->matrix.m11() == 0 && d->matrix.m22() == 0)))) {
+                useRects = true;
+                for (int i = 0; i < lineCount; ++i) {
+                    if (lines[i].p1().x() != lines[i].p2().x()
+                        && lines[i].p1().y() != lines[i].p2().y()) {
+                        useRects = false;
+                        break;
+                    }
+                }
+            }
+
+            GLfloat endCap = d->cpen.capStyle() == Qt::FlatCap ? 0.0f : 0.5f;
+            if (useRects) {
+                QVarLengthArray<GLfloat> vertexArray(12 * lineCount);
+
+                GLfloat quad[8];
+                for (int i = 0; i < lineCount; ++i) {
+                    GLfloat x1 = lines[i].x1();
+                    GLfloat x2 = lines[i].x2();
+                    GLfloat y1 = lines[i].y1();
+                    GLfloat y2 = lines[i].y2();
+
+                    if (x1 == x2) {
+                        if (y1 > y2)
+                            qSwap(y1, y2);
+
+                        quad[0] = x1 - 0.5f;
+                        quad[1] = y1 - endCap;
+
+                        quad[2] = x1 + 0.5f;
+                        quad[3] = y1 - endCap;
+
+                        quad[4] = x1 + 0.5f;
+                        quad[5] = y2 + endCap;
+
+                        quad[6] = x1 - 0.5f;
+                        quad[7] = y2 + endCap;
+                    } else {
+                        if (x1 > x2)
+                            qSwap(x1, x2);
+
+                        quad[0] = x1 - endCap;
+                        quad[1] = y1 + 0.5f;
+
+                        quad[2] = x1 - endCap;
+                        quad[3] = y1 - 0.5f;
+
+                        quad[4] = x2 + endCap;
+                        quad[5] = y1 - 0.5f;
+
+                        quad[6] = x2 + endCap;
+                        quad[7] = y1 + 0.5f;
+                    }
+
+                    addQuadAsTriangle(quad, &vertexArray[12*i]);
+                }
+
+                glEnableClientState(GL_VERTEX_ARRAY);
+
+                glVertexPointer(2, GL_FLOAT, 0, vertexArray.constData());
+                glDrawArrays(GL_TRIANGLES, 0, lineCount*6);
+
+                glDisableClientState(GL_VERTEX_ARRAY);
+            } else {
+                QVarLengthArray<GLfloat> vertexArray(4 * lineCount);
+                for (int i = 0; i < lineCount; ++i) {
+                    const QPointF a = lines[i].p1();
+                    vertexArray[4*i]   = lines[i].x1();
+                    vertexArray[4*i+1] = lines[i].y1();
+                    vertexArray[4*i+2] = lines[i].x2();
+                    vertexArray[4*i+3] = lines[i].y2();
+                }
+
+                glEnableClientState(GL_VERTEX_ARRAY);
+
+                glVertexPointer(2, GL_FLOAT, 0, vertexArray.constData());
+                glDrawArrays(GL_LINES, 0, lineCount*2);
+
+                glVertexPointer(2, GL_FLOAT, 4*sizeof(GLfloat), vertexArray.constData() + 2);
+                glDrawArrays(GL_POINTS, 0, lineCount);
+
+                glDisableClientState(GL_VERTEX_ARRAY);
+            }
+        } else {
+            QPainterPath path;
+            path.setFillRule(Qt::WindingFill);
+            for (int i=0; i<lineCount; ++i) {
+                const QLineF &l = lines[i];
+
+                if (l.p1() == l.p2()) {
+                    if (d->cpen.capStyle() != Qt::FlatCap) {
+                        QPointF p = l.p1();
+                        drawPoints(&p, 1);
+                    }
+                    continue;
+                }
+
+                path.moveTo(l.x1(), l.y1());
+                path.lineTo(l.x2(), l.y2());
+            }
+
+            if (d->has_fast_pen && d->high_quality_antialiasing)
+                d->strokeLines(path);
+            else
+                d->strokePath(path, false);
+        }
+    }
+}
+
+void QOpenGLPaintEngine::drawPolygon(const QPoint *points, int pointCount, PolygonDrawMode mode)
+{
+    Q_ASSERT(sizeof(QT_PointF) == sizeof(QPointF));
+    QVarLengthArray<QT_PointF> p(pointCount);
+    for (int i=0; i<pointCount; ++i) {
+        p[i].x = points[i].x();
+        p[i].y = points[i].y();
+    }
+    drawPolygon((QPointF *)p.data(), pointCount, mode);
+}
+
+void QOpenGLPaintEngine::drawPolygon(const QPointF *points, int pointCount, PolygonDrawMode mode)
+{
+    Q_D(QOpenGLPaintEngine);
+    if(pointCount < 2)
+        return;
+
+    if (d->use_emulation) {
+        QPaintEngineEx::drawPolygon(points, pointCount, mode);
+        return;
+    }
+
+    QRectF bounds;
+    if ((mode == ConvexMode && !d->high_quality_antialiasing && state()->brushNeedsResolving()) ||
+        ((d->has_fast_pen && !d->high_quality_antialiasing) && state()->penNeedsResolving())) {
+        qreal minx = points[0].x(), miny = points[0].y(),
+              maxx = points[0].x(), maxy = points[0].y();
+        for (int i = 1; i < pointCount; ++i) {
+            const QPointF &pt = points[i];
+            if (minx > pt.x())
+                minx = pt.x();
+            if (miny > pt.y())
+                miny = pt.y();
+            if (maxx < pt.x())
+                maxx = pt.x();
+            if (maxy < pt.y())
+                maxy = pt.y();
+        }
+        bounds = QRectF(minx, maxx, maxx-minx, maxy-miny);
+    }
+
+    QOpenGLCoordinateOffset offset(d);
+
+    if (d->has_brush && mode != PolylineMode) {
+        if (mode == ConvexMode && !d->high_quality_antialiasing) {
+            //### resolving on polygon from points isn't correct
+            d->setGradientOps(d->cbrush, bounds);
+
+            const qreal *vertexArray = reinterpret_cast<const qreal*>(&points[0]);
+
+            if (sizeof(qreal) == sizeof(double)) {
+                Q_ASSERT(sizeof(QPointF) == 16);
+                glVertexPointer(2, GL_DOUBLE, 0, vertexArray);
+            }
+            else {
+                Q_ASSERT(sizeof(QPointF) == 8);
+                glVertexPointer(2, GL_FLOAT, 0, vertexArray);
+            }
+
+            glEnableClientState(GL_VERTEX_ARRAY);
+            glDrawArrays(GL_TRIANGLE_FAN, 0, pointCount);
+            glDisableClientState(GL_VERTEX_ARRAY);
+        } else {
+            QPainterPath path;
+            path.setFillRule(mode == WindingMode ? Qt::WindingFill : Qt::OddEvenFill);
+            path.moveTo(points[0]);
+            for (int i=1; i<pointCount; ++i)
+                path.lineTo(points[i]);
+            d->fillPath(path);
+        }
+    }
+
+    if (d->has_pen) {
+        if (d->has_fast_pen && !d->high_quality_antialiasing) {
+            d->setGradientOps(d->cpen.brush(), bounds);
+            QVarLengthArray<GLfloat> vertexArray(pointCount*2 + 2);
+            glVertexPointer(2, GL_FLOAT, 0, vertexArray.constData());
+            int i;
+            for (i=0; i<pointCount; ++i) {
+                vertexArray[i*2] = points[i].x();
+                vertexArray[i*2+1] = points[i].y();
+            }
+
+            glEnableClientState(GL_VERTEX_ARRAY);
+            if (mode != PolylineMode) {
+                vertexArray[i*2] = vertexArray[0];
+                vertexArray[i*2+1] = vertexArray[1];
+                glDrawArrays(GL_LINE_STRIP, 0, pointCount+1);
+            } else {
+                glDrawArrays(GL_LINE_STRIP, 0, pointCount);
+                glDrawArrays(GL_POINTS, pointCount-1, 1);
+            }
+            glDisableClientState(GL_VERTEX_ARRAY);
+        } else {
+            QPainterPath path(points[0]);
+            for (int i = 1; i < pointCount; ++i)
+                path.lineTo(points[i]);
+            if (mode != PolylineMode)
+                path.lineTo(points[0]);
+
+            if (d->has_fast_pen)
+                d->strokeLines(path);
+            else
+                d->strokePath(path, true);
+        }
+    }
+}
+
+void QOpenGLPaintEnginePrivate::strokeLines(const QPainterPath &path)
+{
+    DEBUG_ONCE_STR("QOpenGLPaintEnginePrivate::strokeLines()");
+
+    qreal penWidth = cpen.widthF();
+
+    GLuint program = qt_gl_program_cache()->getProgram(device->context(),
+                                                       FRAGMENT_PROGRAM_MASK_TRAPEZOID_AA, 0, true);
+    QGLLineMaskGenerator maskGenerator(path, matrix, penWidth == 0 ? 1.0 : penWidth,
+                                       offscreen, program);
+
+    disableClipping();
+
+    QBrush temp = cbrush;
+    QPointF origin = brush_origin;
+
+    cbrush = cpen.brush();
+    brush_origin = QPointF();
+
+    addItem(qt_mask_texture_cache()->getMask(maskGenerator, this));
+
+    cbrush = temp;
+    brush_origin = origin;
+
+    enableClipping();
+}
+
+Q_GUI_EXPORT bool qt_scaleForTransform(const QTransform &transform, qreal *scale); // qtransform.cpp
+
+void QOpenGLPaintEnginePrivate::strokePath(const QPainterPath &path, bool use_cache)
+{
+    QBrush old_brush = cbrush;
+    cbrush = cpen.brush();
+
+    qreal txscale = 1;
+    if (cpen.isCosmetic() || (qt_scaleForTransform(matrix, &txscale) && txscale != 1)) {
+        QTransform temp = matrix;
+        matrix = QTransform();
+        glPushMatrix();
+
+        if (has_antialiasing) {
+            glLoadIdentity();
+        } else {
+            float offs_matrix[] =
+              { 1, 0, 0, 0,
+                0, 1, 0, 0,
+                0, 0, 1, 0,
+                0.5, 0.5, 0, 1 };
+            glLoadMatrixf(offs_matrix);
+        }
+
+        QPen pen = cpen;
+        if (txscale != 1)
+            pen.setWidthF(pen.widthF() * txscale);
+        if (use_cache)
+            fillPath(qt_opengl_stroke_cache()->getStrokedPath(temp.map(path), pen));
+        else
+            fillPath(strokeForPath(temp.map(path), pen));
+
+        glPopMatrix();
+        matrix = temp;
+    } else if (use_cache) {
+        fillPath(qt_opengl_stroke_cache()->getStrokedPath(path, cpen));
+    } else {
+        fillPath(strokeForPath(path, cpen));
+    }
+
+    cbrush = old_brush;
+}
+
+void QOpenGLPaintEnginePrivate::strokePathFastPen(const QPainterPath &path, bool needsResolving)
+{
+#ifndef QT_OPENGL_ES
+    QRectF bounds;
+    if (needsResolving)
+        bounds = path.controlPointRect();
+    setGradientOps(cpen.brush(), bounds);
+
+    QBezier beziers[32];
+    for (int i=0; i<path.elementCount(); ++i) {
+        const QPainterPath::Element &e = path.elementAt(i);
+        switch (e.type) {
+        case QPainterPath::MoveToElement:
+            if (i != 0)
+                glEnd(); // GL_LINE_STRIP
+            glBegin(GL_LINE_STRIP);
+            glVertex2d(e.x, e.y);
+
+            break;
+        case QPainterPath::LineToElement:
+            glVertex2d(e.x, e.y);
+            break;
+
+        case QPainterPath::CurveToElement:
+        {
+            QPointF sp = path.elementAt(i-1);
+            QPointF cp2 = path.elementAt(i+1);
+            QPointF ep = path.elementAt(i+2);
+            i+=2;
+
+            qreal inverseScaleHalf = inverseScale / 2;
+            beziers[0] = QBezier::fromPoints(sp, e, cp2, ep);
+            QBezier *b = beziers;
+            while (b >= beziers) {
+                // check if we can pop the top bezier curve from the stack
+                qreal l = qAbs(b->x4 - b->x1) + qAbs(b->y4 - b->y1);
+                qreal d;
+                if (l > inverseScale) {
+                    d = qAbs( (b->x4 - b->x1)*(b->y1 - b->y2)
+                              - (b->y4 - b->y1)*(b->x1 - b->x2) )
+                        + qAbs( (b->x4 - b->x1)*(b->y1 - b->y3)
+                                - (b->y4 - b->y1)*(b->x1 - b->x3) );
+                    d /= l;
+                } else {
+                    d = qAbs(b->x1 - b->x2) + qAbs(b->y1 - b->y2) +
+                        qAbs(b->x1 - b->x3) + qAbs(b->y1 - b->y3);
+                }
+                if (d < inverseScaleHalf || b == beziers + 31) {
+                    // good enough, we pop it off and add the endpoint
+                    glVertex2d(b->x4, b->y4);
+                    --b;
+                } else {
+                    // split, second half of the polygon goes lower into the stack
+                    b->split(b+1, b);
+                    ++b;
+                }
+            }
+        } // case CurveToElement
+        default:
+            break;
+        } // end of switch
+    }
+    glEnd(); // GL_LINE_STRIP
+#else
+    // have to use vertex arrays on embedded
+    QRectF bounds;
+    if (needsResolving)
+        bounds = path.controlPointRect();
+    setGradientOps(cpen.brush(), bounds);
+
+    glEnableClientState(GL_VERTEX_ARRAY);
+    tess_points.reset();
+    QBezier beziers[32];
+    for (int i=0; i<path.elementCount(); ++i) {
+        const QPainterPath::Element &e = path.elementAt(i);
+        switch (e.type) {
+        case QPainterPath::MoveToElement:
+            if (i != 0) {
+                glVertexPointer(2, GL_FLOAT, 0, tess_points.data());
+                glDrawArrays(GL_LINE_STRIP, 0, tess_points.size());
+                tess_points.reset();
+            }
+            tess_points.add(QPointF(e.x, e.y));
+
+            break;
+        case QPainterPath::LineToElement:
+            tess_points.add(QPointF(e.x, e.y));
+            break;
+
+        case QPainterPath::CurveToElement:
+        {
+            QPointF sp = path.elementAt(i-1);
+            QPointF cp2 = path.elementAt(i+1);
+            QPointF ep = path.elementAt(i+2);
+            i+=2;
+
+            qreal inverseScaleHalf = inverseScale / 2;
+            beziers[0] = QBezier::fromPoints(sp, e, cp2, ep);
+            QBezier *b = beziers;
+            while (b >= beziers) {
+                // check if we can pop the top bezier curve from the stack
+                qreal l = qAbs(b->x4 - b->x1) + qAbs(b->y4 - b->y1);
+                qreal d;
+                if (l > inverseScale) {
+                    d = qAbs( (b->x4 - b->x1)*(b->y1 - b->y2)
+                              - (b->y4 - b->y1)*(b->x1 - b->x2) )
+                        + qAbs( (b->x4 - b->x1)*(b->y1 - b->y3)
+                                - (b->y4 - b->y1)*(b->x1 - b->x3) );
+                    d /= l;
+                } else {
+                    d = qAbs(b->x1 - b->x2) + qAbs(b->y1 - b->y2) +
+                        qAbs(b->x1 - b->x3) + qAbs(b->y1 - b->y3);
+                }
+                if (d < inverseScaleHalf || b == beziers + 31) {
+                    // good enough, we pop it off and add the endpoint
+                    tess_points.add(QPointF(b->x4, b->y4));
+                    --b;
+                } else {
+                    // split, second half of the polygon goes lower into the stack
+                    b->split(b+1, b);
+                    ++b;
+                }
+            }
+        } // case CurveToElement
+        default:
+            break;
+        } // end of switch
+    }
+    glVertexPointer(2, GL_FLOAT, 0, tess_points.data());
+    glDrawArrays(GL_LINE_STRIP, 0, tess_points.size());
+    glDisableClientState(GL_VERTEX_ARRAY);
+#endif
+}
+
+static bool pathClosed(const QPainterPath &path)
+{
+    QPointF lastMoveTo = path.elementAt(0);
+    QPointF lastPoint = lastMoveTo;
+
+    for (int i = 1; i < path.elementCount(); ++i) {
+        const QPainterPath::Element &e = path.elementAt(i);
+        switch (e.type) {
+        case QPainterPath::MoveToElement:
+            if (lastMoveTo != lastPoint)
+                return false;
+            lastMoveTo = lastPoint = e;
+            break;
+        case QPainterPath::LineToElement:
+            lastPoint = e;
+            break;
+        case QPainterPath::CurveToElement:
+            lastPoint = path.elementAt(i + 2);
+            i+=2;
+            break;
+        default:
+            break;
+        }
+    }
+
+    return lastMoveTo == lastPoint;
+}
+
+void QOpenGLPaintEngine::drawPath(const QPainterPath &path)
+{
+    Q_D(QOpenGLPaintEngine);
+
+    if (path.isEmpty())
+        return;
+
+    if (d->use_emulation) {
+        QPaintEngineEx::drawPath(path);
+        return;
+    }
+
+    QOpenGLCoordinateOffset offset(d);
+
+    if (d->has_brush) {
+        bool path_closed = pathClosed(path);
+
+        bool has_thick_pen =
+            path_closed
+            && d->has_pen
+            && d->cpen.style() == Qt::SolidLine
+            && d->cpen.isSolid()
+            && d->cpen.color().alpha() == 255
+            && d->txop < QTransform::TxProject
+            && d->cpen.widthF() >= 2 / qSqrt(qMin(d->matrix.m11() * d->matrix.m11()
+                                                  + d->matrix.m21() * d->matrix.m21(),
+                                                  d->matrix.m12() * d->matrix.m12()
+                                                  + d->matrix.m22() * d->matrix.m22()));
+
+        if (has_thick_pen) {
+            DEBUG_ONCE qDebug() << "QOpenGLPaintEngine::drawPath(): Using thick pen optimization, style:" << d->cbrush.style();
+
+            d->flushDrawQueue();
+
+            bool temp = d->high_quality_antialiasing;
+            d->high_quality_antialiasing = false;
+
+            updateCompositionMode(d->composition_mode);
+
+            d->fillPath(path);
+
+            d->high_quality_antialiasing = temp;
+            updateCompositionMode(d->composition_mode);
+        } else {
+            d->fillPath(path);
+        }
+    }
+
+    if (d->has_pen) {
+        if (d->has_fast_pen && !d->high_quality_antialiasing)
+            d->strokePathFastPen(path, state()->penNeedsResolving());
+        else
+            d->strokePath(path, true);
+    }
+}
+
+void QOpenGLPaintEnginePrivate::drawImageAsPath(const QRectF &r, const QImage &img, const QRectF &sr)
+{
+    QBrush old_brush = cbrush;
+    QPointF old_brush_origin = brush_origin;
+
+    qreal scaleX = r.width() / sr.width();
+    qreal scaleY = r.height() / sr.height();
+
+    QTransform brush_matrix = QTransform::fromTranslate(r.left(), r.top());
+    brush_matrix.scale(scaleX, scaleY);
+    brush_matrix.translate(-sr.left(), -sr.top());
+
+    cbrush = QBrush(img);
+    cbrush.setTransform(brush_matrix);
+    brush_origin = QPointF();
+
+    QPainterPath p;
+    p.addRect(r);
+    fillPath(p);
+
+    cbrush = old_brush;
+    brush_origin = old_brush_origin;
+}
+
+void QOpenGLPaintEnginePrivate::drawTiledImageAsPath(const QRectF &r, const QImage &img, qreal sx, qreal sy,
+                                                     const QPointF &offset)
+{
+    QBrush old_brush = cbrush;
+    QPointF old_brush_origin = brush_origin;
+
+    QTransform brush_matrix = QTransform::fromTranslate(r.left(), r.top());
+    brush_matrix.scale(sx, sy);
+    brush_matrix.translate(-offset.x(), -offset.y());
+
+    cbrush = QBrush(img);
+    cbrush.setTransform(brush_matrix);
+    brush_origin = QPointF();
+
+    QPainterPath p;
+    p.addRect(r);
+    fillPath(p);
+
+    cbrush = old_brush;
+    brush_origin = old_brush_origin;
+}
+
+static const QRectF scaleRect(const QRectF &r, qreal sx, qreal sy)
+{
+    return QRectF(r.x() * sx, r.y() * sy, r.width() * sx, r.height() * sy);
+}
+
+template <typename T>
+static const T qSubImage(const T &image, const QRectF &src, QRectF *srcNew)
+{
+    const int sx1 = qMax(0, qFloor(src.left()));
+    const int sy1 = qMax(0, qFloor(src.top()));
+    const int sx2 = qMin(image.width(), qCeil(src.right()));
+    const int sy2 = qMin(image.height(), qCeil(src.bottom()));
+
+    const T sub = image.copy(sx1, sy1, sx2 - sx1, sy2 - sy1);
+
+    if (srcNew)
+        *srcNew = src.translated(-sx1, -sy1);
+
+    return sub;
+}
+
+void QOpenGLPaintEngine::drawPixmap(const QRectF &r, const QPixmap &pm, const QRectF &sr)
+{
+    Q_D(QOpenGLPaintEngine);
+    if (pm.depth() == 1) {
+        QPixmap tpx(pm.size());
+        tpx.fill(Qt::transparent);
+        QPainter p(&tpx);
+        p.setPen(d->cpen);
+        p.drawPixmap(0, 0, pm);
+        p.end();
+        drawPixmap(r, tpx, sr);
+        return;
+    }
+
+    const int sz = d->max_texture_size;
+    if (pm.width() > sz || pm.height() > sz) {
+        QRectF subsr;
+        const QPixmap sub = qSubImage(pm, sr, &subsr);
+
+        if (sub.width() <= sz && sub.height() <= sz) {
+            drawPixmap(r, sub, subsr);
+        } else {
+            const QPixmap scaled = sub.scaled(sz, sz, Qt::KeepAspectRatio);
+            const qreal sx = scaled.width() / qreal(sub.width());
+            const qreal sy = scaled.height() / qreal(sub.height());
+
+            drawPixmap(r, scaled, scaleRect(subsr, sx, sy));
+        }
+        return;
+    }
+
+
+    if (d->composition_mode > QPainter::CompositionMode_Plus || (d->high_quality_antialiasing && !d->isFastRect(r)))
+        d->drawImageAsPath(r, pm.toImage(), sr);
+    else {
+        GLenum target = qt_gl_preferredTextureTarget();
+        d->flushDrawQueue();
+        QGLTexture *tex =
+            d->device->context()->d_func()->bindTexture(pm, target, GL_RGBA,
+                                                        QGLContext::InternalBindOption);
+        drawTextureRect(pm.width(), pm.height(), r, sr, target, tex);
+    }
+}
+
+void QOpenGLPaintEngine::drawTiledPixmap(const QRectF &r, const QPixmap &pm, const QPointF &offset)
+{
+    Q_D(QOpenGLPaintEngine);
+    if (pm.depth() == 1) {
+        QPixmap tpx(pm.size());
+        tpx.fill(Qt::transparent);
+        QPainter p(&tpx);
+        p.setPen(d->cpen);
+        p.drawPixmap(0, 0, pm);
+        p.end();
+        drawTiledPixmap(r, tpx, offset);
+        return;
+    }
+
+    QImage scaled;
+    const int sz = d->max_texture_size;
+    if (pm.width() > sz || pm.height() > sz) {
+        int rw = qCeil(r.width());
+        int rh = qCeil(r.height());
+        if (rw < pm.width() && rh < pm.height()) {
+            drawTiledPixmap(r, pm.copy(0, 0, rw, rh), offset);
+            return;
+        }
+
+        scaled = pm.toImage().scaled(sz, sz, Qt::KeepAspectRatio);
+    }
+
+    if (d->composition_mode > QPainter::CompositionMode_Plus || (d->high_quality_antialiasing && !d->isFastRect(r))) {
+        if (scaled.isNull())
+            d->drawTiledImageAsPath(r, pm.toImage(), 1, 1, offset);
+        else {
+            const qreal sx = pm.width() / qreal(scaled.width());
+            const qreal sy = pm.height() / qreal(scaled.height());
+            d->drawTiledImageAsPath(r, scaled, sx, sy, offset);
+        }
+    } else {
+        d->flushDrawQueue();
+
+        QGLTexture *tex;
+        if (scaled.isNull())
+            tex = d->device->context()->d_func()->bindTexture(pm, GL_TEXTURE_2D, GL_RGBA,
+                                                              QGLContext::InternalBindOption);
+        else
+            tex = d->device->context()->d_func()->bindTexture(scaled, GL_TEXTURE_2D, GL_RGBA,
+                                                              QGLContext::InternalBindOption);
+        updateTextureFilter(GL_TEXTURE_2D, GL_REPEAT, d->use_smooth_pixmap_transform);
+
+#ifndef QT_OPENGL_ES
+        glPushAttrib(GL_CURRENT_BIT);
+        glDisable(GL_TEXTURE_GEN_S);
+#endif
+        glColor4f(d->opacity, d->opacity, d->opacity, d->opacity);
+        glEnable(GL_TEXTURE_2D);
+
+        GLdouble tc_w = r.width()/pm.width();
+        GLdouble tc_h = r.height()/pm.height();
+
+        // Rotate the texture so that it is aligned correctly and the
+        // wrapping is done correctly
+        if (tex->options & QGLContext::InvertedYBindOption) {
+            glMatrixMode(GL_TEXTURE);
+            glPushMatrix();
+            glRotatef(180.0, 0.0, 1.0, 0.0);
+            glRotatef(180.0, 0.0, 0.0, 1.0);
+        }
+
+        GLfloat vertexArray[4*2];
+        GLfloat texCoordArray[4*2];
+
+        double offset_x = offset.x() / pm.width();
+        double offset_y = offset.y() / pm.height();
+
+        qt_add_rect_to_array(r, vertexArray);
+        qt_add_texcoords_to_array(offset_x, offset_y,
+                                  tc_w + offset_x, tc_h + offset_y, texCoordArray);
+
+        glVertexPointer(2, GL_FLOAT, 0, vertexArray);
+        glTexCoordPointer(2, GL_FLOAT, 0, texCoordArray);
+
+        glEnableClientState(GL_VERTEX_ARRAY);
+        glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+        glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
+        glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+        glDisableClientState(GL_VERTEX_ARRAY);
+        if (tex->options & QGLContext::InvertedYBindOption)
+            glPopMatrix();
+
+        glDisable(GL_TEXTURE_2D);
+#ifndef QT_OPENGL_ES
+        glPopAttrib();
+#endif
+    }
+}
+
+void QOpenGLPaintEngine::drawImage(const QRectF &r, const QImage &image, const QRectF &sr,
+                                   Qt::ImageConversionFlags)
+{
+    Q_D(QOpenGLPaintEngine);
+
+    const int sz = d->max_texture_size;
+    if (image.width() > sz || image.height() > sz) {
+        QRectF subsr;
+        const QImage sub = qSubImage(image, sr, &subsr);
+
+        if (sub.width() <= sz && sub.height() <= sz) {
+            drawImage(r, sub, subsr, 0);
+        } else {
+            const QImage scaled = sub.scaled(sz, sz, Qt::KeepAspectRatio);
+            const qreal sx = scaled.width() / qreal(sub.width());
+            const qreal sy = scaled.height() / qreal(sub.height());
+
+            drawImage(r, scaled, scaleRect(subsr, sx, sy), 0);
+        }
+        return;
+    }
+
+    if (d->composition_mode > QPainter::CompositionMode_Plus || (d->high_quality_antialiasing && !d->isFastRect(r)))
+        d->drawImageAsPath(r, image, sr);
+    else {
+        GLenum target = qt_gl_preferredTextureTarget();
+        d->flushDrawQueue();
+        QGLTexture *tex =
+            d->device->context()->d_func()->bindTexture(image, target, GL_RGBA,
+                                                        QGLContext::InternalBindOption);
+        drawTextureRect(image.width(), image.height(), r, sr, target, tex);
+    }
+}
+
+void QOpenGLPaintEngine::drawTextureRect(int tx_width, int tx_height, const QRectF &r,
+                                         const QRectF &sr, GLenum target, QGLTexture *tex)
+{
+    Q_D(QOpenGLPaintEngine);
+#ifndef QT_OPENGL_ES
+    glPushAttrib(GL_CURRENT_BIT);
+    glDisable(GL_TEXTURE_GEN_S);
+#endif
+    glColor4f(d->opacity, d->opacity, d->opacity, d->opacity);
+    glEnable(target);
+    updateTextureFilter(target, GL_CLAMP_TO_EDGE, d->use_smooth_pixmap_transform);
+
+    qreal x1, x2, y1, y2;
+    if (target == GL_TEXTURE_2D) {
+        x1 = sr.x() / tx_width;
+        x2 = x1 + sr.width() / tx_width;
+        if (tex->options & QGLContext::InvertedYBindOption) {
+            y1 = 1 - (sr.bottom() / tx_height);
+            y2 = 1 - (sr.y() / tx_height);
+        } else {
+            y1 = sr.bottom() / tx_height;
+            y2 = sr.y() / tx_height;
+        }
+    } else {
+        x1 = sr.x();
+        x2 = sr.right();
+        y1 = sr.bottom();
+        y2 = sr.y();
+    }
+
+    GLfloat vertexArray[4*2];
+    GLfloat texCoordArray[4*2];
+
+    qt_add_rect_to_array(r, vertexArray);
+    qt_add_texcoords_to_array(x1, y2, x2, y1, texCoordArray);
+
+    glVertexPointer(2, GL_FLOAT, 0, vertexArray);
+    glTexCoordPointer(2, GL_FLOAT, 0, texCoordArray);
+
+    glEnableClientState(GL_VERTEX_ARRAY);
+    glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+    glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
+    glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+    glDisableClientState(GL_VERTEX_ARRAY);
+
+    glDisable(target);
+#ifndef QT_OPENGL_ES
+    glPopAttrib();
+#endif
+}
+
+#ifdef Q_WS_WIN
+HDC
+#else
+Qt::HANDLE
+#endif
+QOpenGLPaintEngine::handle() const
+{
+    return 0;
+}
+
+static const int x_margin = 1;
+static const int y_margin = 0;
+
+struct QGLGlyphCoord {
+    // stores the offset and size of a glyph texture
+    qreal x;
+    qreal y;
+    qreal width;
+    qreal height;
+    qreal log_width;
+    qreal log_height;
+    QFixed x_offset;
+    QFixed y_offset;
+};
+
+struct QGLFontTexture {
+    int x_offset; // glyph offset within the
+    int y_offset;
+    GLuint texture;
+    int width;
+    int height;
+};
+
+typedef QHash<glyph_t, QGLGlyphCoord*>  QGLGlyphHash;
+typedef QHash<QFontEngine*, QGLGlyphHash*> QGLFontGlyphHash;
+typedef QHash<quint64, QGLFontTexture*> QGLFontTexHash;
+typedef QHash<const QGLContext*, QGLFontGlyphHash*> QGLContextHash;
+
+static inline void qt_delete_glyph_hash(QGLGlyphHash *hash)
+{
+    qDeleteAll(*hash);
+    delete hash;
+}
+
+class QGLGlyphCache : public QObject
+{
+    Q_OBJECT
+public:
+    QGLGlyphCache() : QObject(0) { current_cache = 0; }
+    ~QGLGlyphCache();
+    QGLGlyphCoord *lookup(QFontEngine *, glyph_t);
+    void cacheGlyphs(QGLContext *, QFontEngine *, glyph_t *glyphs, int numGlyphs);
+    void cleanCache();
+    void allocTexture(int width, int height, GLuint texture);
+
+public slots:
+    void cleanupContext(const QGLContext *);
+    void fontEngineDestroyed(QObject *);
+    void widgetDestroyed(QObject *);
+
+protected:
+    QGLGlyphHash *current_cache;
+    QGLFontTexHash qt_font_textures;
+    QGLContextHash qt_context_cache;
+};
+
+QGLGlyphCache::~QGLGlyphCache()
+{
+//     qDebug() << "cleaning out the QGLGlyphCache";
+    cleanCache();
+}
+
+void QGLGlyphCache::fontEngineDestroyed(QObject *o)
+{
+//     qDebug() << "fontEngineDestroyed()";
+    QFontEngine *fe = static_cast<QFontEngine *>(o); // safe, since only the type is used
+    QList<const QGLContext *> keys = qt_context_cache.keys();
+    const QGLContext *ctx = 0;
+
+    for (int i=0; i < keys.size(); ++i) {
+        QGLFontGlyphHash *font_cache = qt_context_cache.value(keys.at(i));
+        if (font_cache->find(fe) != font_cache->end()) {
+            ctx = keys.at(i);
+            QGLGlyphHash *cache = font_cache->take(fe);
+            qt_delete_glyph_hash(cache);
+            break;
+        }
+    }
+
+    quint64 font_key = (reinterpret_cast<quint64>(ctx) << 32) | reinterpret_cast<quint64>(fe);
+    QGLFontTexture *tex = qt_font_textures.take(font_key);
+    if (tex) {
+#ifdef Q_WS_MAC
+        if (
+#  ifndef QT_MAC_USE_COCOA
+            aglGetCurrentContext() != 0
+#  else
+            qt_current_nsopengl_context() != 0
+#  endif
+           )
+#endif
+            glDeleteTextures(1, &tex->texture);
+        delete tex;
+    }
+}
+
+void QGLGlyphCache::widgetDestroyed(QObject *)
+{
+//     qDebug() << "widget destroyed";
+    cleanCache(); // ###
+}
+
+void QGLGlyphCache::cleanupContext(const QGLContext *ctx)
+{
+//     qDebug() << "==> cleaning for: " << hex << ctx;
+    QGLFontGlyphHash *font_cache = qt_context_cache.take(ctx);
+
+    if (font_cache) {
+        QList<QFontEngine *> keys = font_cache->keys();
+        for (int i=0; i < keys.size(); ++i) {
+            QFontEngine *fe = keys.at(i);
+            qt_delete_glyph_hash(font_cache->take(fe));
+            quint64 font_key = (reinterpret_cast<quint64>(ctx) << 32) | reinterpret_cast<quint64>(fe);
+            QGLFontTexture *font_tex = qt_font_textures.take(font_key);
+            if (font_tex) {
+#ifdef Q_WS_MAC
+                if (
+#  ifndef QT_MAC_USE_COCOA
+            aglGetCurrentContext() == 0
+#  else
+            qt_current_nsopengl_context() != 0
+#  endif
+                   )
+#endif
+                    glDeleteTextures(1, &font_tex->texture);
+                delete font_tex;
+            }
+        }
+        delete font_cache;
+    }
+//    qDebug() << "<=== done cleaning, num tex:" << qt_font_textures.size() << "num ctx:" << qt_context_cache.size();
+}
+
+void QGLGlyphCache::cleanCache()
+{
+    QGLFontTexHash::const_iterator it = qt_font_textures.constBegin();
+    if (QGLContext::currentContext()) {
+        while (it != qt_font_textures.constEnd()) {
+#if defined(Q_WS_MAC) && defined(QT_MAC_USE_COCOA)
+            if (qt_current_nsopengl_context() == 0)
+                break;
+#endif
+            glDeleteTextures(1, &it.value()->texture);
+            ++it;
+        }
+    }
+    qDeleteAll(qt_font_textures);
+    qt_font_textures.clear();
+
+    QList<const QGLContext *> keys = qt_context_cache.keys();
+    for (int i=0; i < keys.size(); ++i) {
+        QGLFontGlyphHash *font_cache = qt_context_cache.value(keys.at(i));
+        QGLFontGlyphHash::Iterator it = font_cache->begin();
+        for (; it != font_cache->end(); ++it)
+            qt_delete_glyph_hash(it.value());
+        font_cache->clear();
+    }
+    qDeleteAll(qt_context_cache);
+    qt_context_cache.clear();
+}
+
+void QGLGlyphCache::allocTexture(int width, int height, GLuint texture)
+{
+    uchar *tex_data = (uchar *) malloc(width*height*2);
+    memset(tex_data, 0, width*height*2);
+    glBindTexture(GL_TEXTURE_2D, texture);
+#ifndef QT_OPENGL_ES
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE8_ALPHA8,
+                 width, height, 0, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, tex_data);
+#else
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE_ALPHA,
+                 width, height, 0, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, tex_data);
+#endif
+    free(tex_data);
+}
+
+#if 0
+// useful for debugging the glyph cache
+static QImage getCurrentTexture(const QColor &color, QGLFontTexture *font_tex)
+{
+    ushort *old_tex_data = (ushort *) malloc(font_tex->width*font_tex->height*2);
+    glGetTexImage(GL_TEXTURE_2D, 0, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, old_tex_data);
+    QImage im(font_tex->width, font_tex->height, QImage::Format_ARGB32);
+    for (int y=0; y<font_tex->height; ++y) {
+        for (int x=0; x<font_tex->width; ++x) {
+            im.setPixel(x, y, ((*(old_tex_data+x+y*font_tex->width)) << 24) | (0x00ffffff & color.rgb()));
+        }
+    }
+    delete old_tex_data;
+    return im;
+}
+#endif
+
+void QGLGlyphCache::cacheGlyphs(QGLContext *context, QFontEngine *fontEngine,
+                                glyph_t *glyphs, int numGlyphs)
+{
+    QGLContextHash::const_iterator dev_it = qt_context_cache.constFind(context);
+    QGLFontGlyphHash *font_cache = 0;
+    const QGLContext *context_key = 0;
+
+    if (dev_it == qt_context_cache.constEnd()) {
+        // check for shared contexts
+        QList<const QGLContext *> contexts = qt_context_cache.keys();
+        for (int i=0; i<contexts.size(); ++i) {
+            const QGLContext *ctx = contexts.at(i);
+            if (ctx != context && QGLContext::areSharing(context, ctx)) {
+                context_key = ctx;
+                dev_it = qt_context_cache.constFind(context_key);
+                break;
+            }
+        }
+    }
+
+    if (dev_it == qt_context_cache.constEnd()) {
+        // no shared contexts either - create a new entry
+        font_cache = new QGLFontGlyphHash;
+//         qDebug() << "new context" << context << font_cache;
+        qt_context_cache.insert(context, font_cache);
+        if (context->isValid()) {
+            if (context->device() && context->device()->devType() == QInternal::Widget) {
+                QWidget *widget = static_cast<QWidget *>(context->device());
+                connect(widget, SIGNAL(destroyed(QObject*)), SLOT(widgetDestroyed(QObject*)));
+            }
+            connect(QGLSignalProxy::instance(),
+                    SIGNAL(aboutToDestroyContext(const QGLContext*)),
+                    SLOT(cleanupContext(const QGLContext*)));
+        }
+    } else {
+        font_cache = dev_it.value();
+    }
+    Q_ASSERT(font_cache != 0);
+
+    QGLFontGlyphHash::const_iterator cache_it = font_cache->constFind(fontEngine);
+    QGLGlyphHash *cache = 0;
+    if (cache_it == font_cache->constEnd()) {
+        cache = new QGLGlyphHash;
+        font_cache->insert(fontEngine, cache);
+        connect(fontEngine, SIGNAL(destroyed(QObject*)), SLOT(fontEngineDestroyed(QObject*)));
+    } else {
+        cache = cache_it.value();
+    }
+    current_cache = cache;
+
+    quint64 font_key = (reinterpret_cast<quint64>(context_key ? context_key : context) << 32)
+                       | reinterpret_cast<quint64>(fontEngine);
+    QGLFontTexHash::const_iterator it = qt_font_textures.constFind(font_key);
+    QGLFontTexture *font_tex;
+    if (it == qt_font_textures.constEnd()) {
+        GLuint font_texture;
+        glGenTextures(1, &font_texture);
+        GLint tex_height = qt_next_power_of_two(qRound(fontEngine->ascent().toReal() + fontEngine->descent().toReal())+2);
+        GLint tex_width = qt_next_power_of_two(tex_height*30); // ###
+        GLint max_tex_size;
+        glGetIntegerv(GL_MAX_TEXTURE_SIZE, &max_tex_size);
+        Q_ASSERT(max_tex_size > 0);
+        if (tex_width > max_tex_size)
+            tex_width = max_tex_size;
+        allocTexture(tex_width, tex_height, font_texture);
+        font_tex = new QGLFontTexture;
+        font_tex->texture = font_texture;
+        font_tex->x_offset = x_margin;
+        font_tex->y_offset = y_margin;
+        font_tex->width = tex_width;
+        font_tex->height = tex_height;
+//         qDebug() << "new font tex - width:" << tex_width << "height:"<< tex_height
+//                  << hex << "tex id:" << font_tex->texture << "key:" << font_key << "num cached:" << qt_font_textures.size();
+        qt_font_textures.insert(font_key, font_tex);
+    } else {
+        font_tex = it.value();
+        glBindTexture(GL_TEXTURE_2D, font_tex->texture);
+    }
+
+    for (int i=0; i< numGlyphs; ++i) {
+        QGLGlyphHash::const_iterator it = cache->constFind(glyphs[i]);
+        if (it == cache->constEnd()) {
+            // render new glyph and put it in the cache
+            glyph_metrics_t metrics = fontEngine->boundingBox(glyphs[i]);
+            int glyph_width = qRound(metrics.width.toReal())+2;
+            int glyph_height = qRound(fontEngine->ascent().toReal() + fontEngine->descent().toReal())+2;
+
+            if (font_tex->x_offset + glyph_width + x_margin > font_tex->width) {
+                int strip_height = qt_next_power_of_two(qRound(fontEngine->ascent().toReal() + fontEngine->descent().toReal())+2);
+                font_tex->x_offset = x_margin;
+                font_tex->y_offset += strip_height;
+                if (font_tex->y_offset >= font_tex->height) {
+                    // get hold of the old font texture
+                    uchar *old_tex_data = (uchar *) malloc(font_tex->width*font_tex->height*2);
+                    int old_tex_height = font_tex->height;
+#ifndef QT_OPENGL_ES
+                    glGetTexImage(GL_TEXTURE_2D, 0, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, old_tex_data);
+#endif
+
+                    // realloc a larger texture
+                    glDeleteTextures(1, &font_tex->texture);
+                    glGenTextures(1, &font_tex->texture);
+                    font_tex->height = qt_next_power_of_two(font_tex->height + strip_height);
+                    allocTexture(font_tex->width, font_tex->height, font_tex->texture);
+
+                    // write back the old texture data
+                    glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, font_tex->width, old_tex_height,
+                                    GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, old_tex_data);
+                    free(old_tex_data);
+
+                    // update the texture coords and the y offset for the existing glyphs in
+                    // the cache, because of the texture size change
+                    QGLGlyphHash::iterator it = cache->begin();
+                    while (it != cache->end()) {
+                        it.value()->height = (it.value()->height * old_tex_height) / font_tex->height;
+                        it.value()->y = (it.value()->y * old_tex_height) / font_tex->height;
+                        ++it;
+                    }
+                }
+            }
+
+            QImage glyph_im(fontEngine->alphaMapForGlyph(glyphs[i]));
+            glyph_width = glyph_im.width();
+            Q_ASSERT(glyph_width >= 0);
+            // pad the glyph width to an even number
+            if (glyph_width%2 != 0)
+                ++glyph_width;
+
+            QGLGlyphCoord *qgl_glyph = new QGLGlyphCoord;
+            qgl_glyph->x = qreal(font_tex->x_offset) / font_tex->width;
+            qgl_glyph->y = qreal(font_tex->y_offset) / font_tex->height;
+            qgl_glyph->width = qreal(glyph_width) / font_tex->width;
+            qgl_glyph->height = qreal(glyph_height) / font_tex->height;
+            qgl_glyph->log_width = qreal(glyph_width);
+            qgl_glyph->log_height = qgl_glyph->height * font_tex->height;
+#ifdef Q_WS_MAC
+            qgl_glyph->x_offset = -metrics.x + 1;
+            qgl_glyph->y_offset = metrics.y - 2;
+#else
+            qgl_glyph->x_offset = -metrics.x;
+            qgl_glyph->y_offset = metrics.y;
+#endif
+
+            if (!glyph_im.isNull()) {
+                int idx = 0;
+                uchar *tex_data = (uchar *) malloc(glyph_width*glyph_im.height()*2);
+                memset(tex_data, 0, glyph_width*glyph_im.height()*2);
+
+                bool is8BitGray = false;
+#ifdef Q_WS_QPA
+                if (glyph_im.format() == QImage::Format_Indexed8) {
+                    is8BitGray = true;
+                }
+#endif
+                glyph_im = glyph_im.convertToFormat(QImage::Format_Indexed8);
+                for (int y=0; y<glyph_im.height(); ++y) {
+                    uchar *s = (uchar *) glyph_im.scanLine(y);
+                    for (int x=0; x<glyph_im.width(); ++x) {
+                        uchar alpha = is8BitGray ? *s : qAlpha(glyph_im.color(*s));
+                        tex_data[idx] = alpha;
+                        tex_data[idx+1] = alpha;
+                        ++s;
+                        idx += 2;
+                    }
+                    if (glyph_im.width()%2 != 0)
+                        idx += 2;
+                }
+                glTexSubImage2D(GL_TEXTURE_2D, 0, font_tex->x_offset, font_tex->y_offset,
+                                glyph_width, glyph_im.height(),
+                                GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, tex_data);
+                free(tex_data);
+            }
+            if (font_tex->x_offset + glyph_width + x_margin > font_tex->width) {
+                font_tex->x_offset = x_margin;
+                font_tex->y_offset += glyph_height + y_margin;
+            } else {
+                font_tex->x_offset += glyph_width + x_margin;
+            }
+
+            cache->insert(glyphs[i], qgl_glyph);
+        }
+    }
+}
+
+QGLGlyphCoord *QGLGlyphCache::lookup(QFontEngine *, glyph_t g)
+{
+    Q_ASSERT(current_cache != 0);
+    // ### careful here
+    QGLGlyphHash::const_iterator it = current_cache->constFind(g);
+    if (it == current_cache->constEnd())
+        return 0;
+    else
+        return it.value();
+}
+
+Q_GLOBAL_STATIC(QGLGlyphCache, qt_glyph_cache)
+
+//
+// assumption: the context that this is called for has to be the
+// current context
+//
+void qgl_cleanup_glyph_cache(QGLContext *ctx)
+{
+    qt_glyph_cache()->cleanupContext(ctx);
+}
+
+void QOpenGLPaintEngine::drawStaticTextItem(QStaticTextItem *textItem)
+{
+    Q_D(QOpenGLPaintEngine);
+
+    d->flushDrawQueue();
+
+    // make sure the glyphs we want to draw are in the cache
+    qt_glyph_cache()->cacheGlyphs(d->device->context(), textItem->fontEngine(), textItem->glyphs,
+                                  textItem->numGlyphs);
+
+    d->setGradientOps(Qt::SolidPattern, QRectF()); // turns off gradient ops
+    qt_glColor4ubv(d->pen_color);
+    glEnable(GL_TEXTURE_2D);
+
+#ifdef Q_WS_QWS
+    // XXX: it is necessary to disable alpha writes on GLES/embedded because we don't want
+    // text rendering to update the alpha in the window surface.
+    // XXX: This may not be needed as this behavior does seem to be caused by driver bug
+    glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_FALSE);
+#endif
+
+    // do the actual drawing
+    GLfloat vertexArray[4*2];
+    GLfloat texCoordArray[4*2];
+
+    glVertexPointer(2, GL_FLOAT, 0, vertexArray);
+    glTexCoordPointer(2, GL_FLOAT, 0, texCoordArray);
+
+    glEnableClientState(GL_VERTEX_ARRAY);
+    glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+    bool antialias = !(textItem->fontEngine()->fontDef.styleStrategy & QFont::NoAntialias)
+				   && (d->matrix.type() > QTransform::TxTranslate);
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, antialias ? GL_LINEAR : GL_NEAREST);
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, antialias ? GL_LINEAR : GL_NEAREST);
+
+    for (int i=0; i< textItem->numGlyphs; ++i) {
+        QGLGlyphCoord *g = qt_glyph_cache()->lookup(textItem->fontEngine(), textItem->glyphs[i]);
+
+        // we don't cache glyphs with no width/height
+        if (!g)
+            continue;
+
+        qreal x1, x2, y1, y2;
+        x1 = g->x;
+        y1 = g->y;
+        x2 = x1 + g->width;
+        y2 = y1 + g->height;
+
+        QPointF logical_pos((textItem->glyphPositions[i].x - g->x_offset).toReal(),
+                            (textItem->glyphPositions[i].y + g->y_offset).toReal());
+
+        qt_add_rect_to_array(QRectF(logical_pos, QSizeF(g->log_width, g->log_height)), vertexArray);
+        qt_add_texcoords_to_array(x1, y1, x2, y2, texCoordArray);
+
+        glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
+    }
+
+    glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+    glDisableClientState(GL_VERTEX_ARRAY);
+
+    glDisable(GL_TEXTURE_2D);
+
+#ifdef Q_WS_QWS
+    // XXX: This may not be needed as this behavior does seem to be caused by driver bug
+    glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
+#endif
+
+}
+
+void QOpenGLPaintEngine::drawTextItem(const QPointF &p, const QTextItem &textItem)
+{
+    Q_D(QOpenGLPaintEngine);
+
+    const QTextItemInt &ti = static_cast<const QTextItemInt &>(textItem);
+
+    // fall back to drawing a polygon if the scale factor is large, or
+    // we use a gradient pen
+    if ((d->matrix.det() > 1) || (d->pen_brush_style >= Qt::LinearGradientPattern
+                                  && d->pen_brush_style <= Qt::ConicalGradientPattern)) {
+        QPaintEngine::drawTextItem(p, textItem);
+        return;
+    }
+
+    // add the glyphs used to the glyph texture cache
+    QVarLengthArray<QFixedPoint> positions;
+    QVarLengthArray<glyph_t> glyphs;
+    QTransform matrix = QTransform::fromTranslate(qRound(p.x()), qRound(p.y()));
+    ti.fontEngine->getGlyphPositions(ti.glyphs, matrix, ti.flags, glyphs, positions);
+
+    {
+        QStaticTextItem staticTextItem;
+        staticTextItem.chars = const_cast<QChar *>(ti.chars);
+        staticTextItem.setFontEngine(ti.fontEngine);
+        staticTextItem.glyphs = glyphs.data();
+        staticTextItem.numChars = ti.num_chars;
+        staticTextItem.numGlyphs = glyphs.size();
+        staticTextItem.glyphPositions = positions.data();
+        drawStaticTextItem(&staticTextItem);
+    }
+
+}
+
+
+void QOpenGLPaintEngine::drawEllipse(const QRectF &rect)
+{
+#ifndef Q_WS_QWS
+    Q_D(QOpenGLPaintEngine);
+
+    if (d->use_emulation) {
+        QPaintEngineEx::drawEllipse(rect);
+        return;
+    }
+
+    if (d->high_quality_antialiasing) {
+        if (d->has_brush) {
+            d->disableClipping();
+
+            glMatrixMode(GL_MODELVIEW);
+            glPushMatrix();
+            glLoadIdentity();
+
+            GLuint program = qt_gl_program_cache()->getProgram(d->device->context(),
+                                                               FRAGMENT_PROGRAM_MASK_ELLIPSE_AA, 0, true);
+            QGLEllipseMaskGenerator maskGenerator(rect,
+                                                  d->matrix,
+                                                  d->offscreen,
+                                                  program,
+                                                  mask_variable_locations[FRAGMENT_PROGRAM_MASK_ELLIPSE_AA]);
+
+            d->addItem(qt_mask_texture_cache()->getMask(maskGenerator, d));
+
+            d->enableClipping();
+
+            glMatrixMode(GL_MODELVIEW);
+            glPopMatrix();
+        }
+
+        if (d->has_pen) {
+            QPainterPath path;
+            path.addEllipse(rect);
+
+            d->strokePath(path, false);
+        }
+    } else {
+        DEBUG_ONCE_STR("QOpenGLPaintEngine::drawEllipse(): falling back to drawPath()");
+
+        QPainterPath path;
+        path.addEllipse(rect);
+        drawPath(path);
+    }
+#else
+    QPaintEngineEx::drawEllipse(rect);
+#endif
+}
+
+
+void QOpenGLPaintEnginePrivate::updateFragmentProgramData(int locations[])
+{
+#ifdef Q_WS_QWS
+    Q_UNUSED(locations);
+#else
+    QGL_FUNC_CONTEXT;
+
+    QSize sz = offscreen.offscreenSize();
+
+    float inv_mask_size_data[4] = { 1.0f / sz.width(), 1.0f / sz.height(), 0.0f, 0.0f };
+
+    sz = drawable_texture_size;
+
+    float inv_dst_size_data[4] = { 1.0f / sz.width(), 1.0f / sz.height(), 0.0f, 0.0f };
+
+    // default inv size 0.125f == 1.0f / 8.0f for pattern brushes
+    float inv_brush_texture_size_data[4] = { 0.125f, 0.125f };
+
+    // texture patterns have their own size
+    if (current_style == Qt::TexturePattern) {
+        QSize sz = cbrush.texture().size();
+
+        inv_brush_texture_size_data[0] = 1.0f / sz.width();
+        inv_brush_texture_size_data[1] = 1.0f / sz.height();
+    }
+
+    for (unsigned int i = 0; i < num_fragment_variables; ++i) {
+        int location = locations[i];
+
+        if (location < 0)
+            continue;
+
+        switch (i) {
+        case VAR_ANGLE:
+            glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, location, angle_data);
+            break;
+        case VAR_LINEAR:
+            glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, location, linear_data);
+            break;
+        case VAR_FMP:
+            glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, location, fmp_data);
+            break;
+        case VAR_FMP2_M_RADIUS2:
+            glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, location, fmp2_m_radius2_data);
+            break;
+        case VAR_INV_MASK_SIZE:
+            glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, location, inv_mask_size_data);
+            break;
+        case VAR_INV_DST_SIZE:
+            glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, location, inv_dst_size_data);
+            break;
+        case VAR_INV_MATRIX_M0:
+            glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, location, inv_matrix_data[0]);
+            break;
+        case VAR_INV_MATRIX_M1:
+            glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, location, inv_matrix_data[1]);
+            break;
+        case VAR_INV_MATRIX_M2:
+            glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, location, inv_matrix_data[2]);
+            break;
+        case VAR_PORTERDUFF_AB:
+            glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, location, porterduff_ab_data);
+            break;
+        case VAR_PORTERDUFF_XYZ:
+            glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, location, porterduff_xyz_data);
+            break;
+        case VAR_INV_BRUSH_TEXTURE_SIZE:
+            glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, location, inv_brush_texture_size_data);
+            break;
+        case VAR_MASK_OFFSET:
+            glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, location, mask_offset_data);
+            break;
+        case VAR_MASK_CHANNEL:
+            glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, location, mask_channel_data);
+            break;
+        case VAR_DST_TEXTURE:
+        case VAR_MASK_TEXTURE:
+        case VAR_PALETTE:
+        case VAR_BRUSH_TEXTURE:
+            // texture variables, not handled here
+            break;
+        default:
+            qDebug() << "QOpenGLPaintEnginePrivate: Unhandled fragment variable:" << i;
+        }
+    }
+#endif
+}
+
+
+void QOpenGLPaintEnginePrivate::copyDrawable(const QRectF &rect)
+{
+#ifdef Q_WS_QWS
+    Q_UNUSED(rect);
+#else
+    ensureDrawableTexture();
+
+    DEBUG_ONCE qDebug() << "Refreshing drawable_texture for rectangle" << rect;
+    QRectF screen_rect = rect.adjusted(-1, -1, 1, 1);
+
+    int left = qMax(0, static_cast<int>(screen_rect.left()));
+    int width = qMin(device->size().width() - left, static_cast<int>(screen_rect.width()) + 1);
+
+    int bottom = qMax(0, static_cast<int>(device->size().height() - screen_rect.bottom()));
+    int height = qMin(device->size().height() - bottom, static_cast<int>(screen_rect.height()) + 1);
+
+    glBindTexture(GL_TEXTURE_2D, drawable_texture);
+    glCopyTexSubImage2D(GL_TEXTURE_2D, 0, left, bottom, left, bottom, width, height);
+#endif
+}
+
+
+void QOpenGLPaintEnginePrivate::composite(const QRectF &rect, const QPoint &maskOffset)
+{
+#ifdef Q_WS_QWS
+    Q_UNUSED(rect);
+    Q_UNUSED(maskOffset);
+#else
+    GLfloat vertexArray[8];
+    qt_add_rect_to_array(rect, vertexArray);
+
+    composite(GL_TRIANGLE_FAN, vertexArray, 4, maskOffset);
+#endif
+}
+
+
+void QOpenGLPaintEnginePrivate::composite(GLuint primitive, const GLfloat *vertexArray, int vertexCount, const QPoint &maskOffset)
+{
+#ifdef QT_OPENGL_ES
+    Q_UNUSED(primitive);
+    Q_UNUSED(vertexArray);
+    Q_UNUSED(vertexCount);
+    Q_UNUSED(maskOffset);
+#else
+    Q_Q(QOpenGLPaintEngine);
+    QGL_FUNC_CONTEXT;
+
+    if (current_style == Qt::NoBrush)
+        return;
+
+    DEBUG_ONCE qDebug() << "QOpenGLPaintEnginePrivate: Using compositing program: fragment_brush ="
+                        << fragment_brush << ", fragment_composition_mode =" << fragment_composition_mode;
+
+    if (has_fast_composition_mode)
+        q->updateCompositionMode(composition_mode);
+    else {
+        qreal minX = 1e9, minY = 1e9, maxX = -1e9, maxY = -1e9;
+
+        for (int i = 0; i < vertexCount; ++i) {
+            qreal x = vertexArray[2 * i];
+            qreal y = vertexArray[2 * i + 1];
+
+            qreal tx, ty;
+            matrix.map(x, y, &tx, &ty);
+
+            minX = qMin(minX, tx);
+            minY = qMin(minY, ty);
+            maxX = qMax(maxX, tx);
+            maxY = qMax(maxY, ty);
+        }
+
+        QRectF r(minX, minY, maxX - minX, maxY - minY);
+        copyDrawable(r);
+
+        glBlendFunc(GL_ONE, GL_ZERO);
+    }
+
+    int *locations = painter_variable_locations[fragment_brush][fragment_composition_mode];
+
+    int texture_locations[] = { locations[VAR_DST_TEXTURE],
+                                locations[VAR_MASK_TEXTURE],
+                                locations[VAR_PALETTE] };
+
+    int brush_texture_location = locations[VAR_BRUSH_TEXTURE];
+
+    GLuint texture_targets[] = { GL_TEXTURE_2D,
+                                 GL_TEXTURE_2D,
+                                 GL_TEXTURE_1D };
+
+    GLuint textures[] = { drawable_texture,
+                          offscreen.offscreenTexture(),
+                          grad_palette };
+
+    const int num_textures = sizeof(textures) / sizeof(*textures);
+
+    Q_ASSERT(num_textures == sizeof(texture_locations) / sizeof(*texture_locations));
+    Q_ASSERT(num_textures == sizeof(texture_targets) / sizeof(*texture_targets));
+
+    for (int i = 0; i < num_textures; ++i)
+        if (texture_locations[i] >= 0) {
+            glActiveTexture(GL_TEXTURE0 + texture_locations[i]);
+            glBindTexture(texture_targets[i], textures[i]);
+        }
+
+    if (brush_texture_location >= 0) {
+        glActiveTexture(GL_TEXTURE0 + brush_texture_location);
+
+        if (current_style == Qt::TexturePattern)
+            device->context()->d_func()->bindTexture(cbrush.textureImage(), GL_TEXTURE_2D, GL_RGBA,
+                                                     QGLContext::InternalBindOption);
+        else
+            device->context()->d_func()->bindTexture(qt_imageForBrush(current_style, false),
+                                                     GL_TEXTURE_2D, GL_RGBA,
+                                                     QGLContext::InternalBindOption);
+
+        updateTextureFilter(GL_TEXTURE_2D, GL_REPEAT, use_smooth_pixmap_transform);
+    }
+
+    glEnableClientState(GL_VERTEX_ARRAY);
+    glVertexPointer(2, GL_FLOAT, 0, vertexArray);
+    glEnable(GL_FRAGMENT_PROGRAM_ARB);
+    GLuint program = qt_gl_program_cache()->getProgram(device->context(),
+                                                       fragment_brush,
+                                                       fragment_composition_mode, false);
+    glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, program);
+
+    mask_offset_data[0] = maskOffset.x();
+    mask_offset_data[1] = -maskOffset.y();
+
+    updateFragmentProgramData(locations);
+
+    glDrawArrays(primitive, 0, vertexCount);
+
+    glDisable(GL_FRAGMENT_PROGRAM_ARB);
+    glDisableClientState(GL_VERTEX_ARRAY);
+
+    for (int i = 0; i < num_textures; ++i)
+        if (texture_locations[i] >= 0) {
+            glActiveTexture(GL_TEXTURE0 + texture_locations[i]);
+            glBindTexture(texture_targets[i], 0);
+        }
+
+    if (brush_texture_location >= 0) {
+        glActiveTexture(GL_TEXTURE0 + brush_texture_location);
+        glBindTexture(GL_TEXTURE_2D, 0);
+    }
+
+    glActiveTexture(GL_TEXTURE0);
+
+    if (!has_fast_composition_mode)
+        q->updateCompositionMode(composition_mode);
+#endif
+}
+
+void QOpenGLPaintEnginePrivate::cacheItemErased(int channel, const QRect &rect)
+{
+    bool isInDrawQueue = false;
+
+    foreach (const QDrawQueueItem &item, drawQueue) {
+        if (item.location.channel == channel && item.location.rect == rect) {
+            isInDrawQueue = true;
+            break;
+        }
+    }
+
+    if (isInDrawQueue)
+        flushDrawQueue();
+}
+
+void QOpenGLPaintEnginePrivate::addItem(const QGLMaskTextureCache::CacheLocation &location)
+{
+    drawQueue << QDrawQueueItem(opacity, cbrush, brush_origin, composition_mode, matrix, location);
+}
+
+void QOpenGLPaintEnginePrivate::drawItem(const QDrawQueueItem &item)
+{
+    Q_Q(QOpenGLPaintEngine);
+
+    opacity = item.opacity;
+    brush_origin = item.brush_origin;
+    q->updateCompositionMode(item.composition_mode);
+    matrix = item.matrix;
+    cbrush = item.brush;
+    brush_style = item.brush.style();
+
+    mask_channel_data[0] = item.location.channel == 0;
+    mask_channel_data[1] = item.location.channel == 1;
+    mask_channel_data[2] = item.location.channel == 2;
+    mask_channel_data[3] = item.location.channel == 3;
+
+    setGradientOps(item.brush, item.location.screen_rect);
+
+    composite(item.location.screen_rect, item.location.rect.topLeft() - item.location.screen_rect.topLeft()
+                                         - QPoint(0, offscreen.offscreenSize().height() - device->size().height()));
+}
+
+void QOpenGLPaintEnginePrivate::flushDrawQueue()
+{
+#ifndef QT_OPENGL_ES
+    Q_Q(QOpenGLPaintEngine);
+
+    offscreen.release();
+
+    if (!drawQueue.isEmpty()) {
+        DEBUG_ONCE qDebug() << "QOpenGLPaintEngine::flushDrawQueue():" << drawQueue.size() << "items";
+
+        glPushMatrix();
+        glLoadIdentity();
+        qreal old_opacity = opacity;
+        QPointF old_brush_origin = brush_origin;
+        QPainter::CompositionMode old_composition_mode = composition_mode;
+        QTransform old_matrix = matrix;
+        QBrush old_brush = cbrush;
+
+        bool hqaa_old = high_quality_antialiasing;
+
+        high_quality_antialiasing = true;
+
+        foreach (const QDrawQueueItem &item, drawQueue)
+            drawItem(item);
+
+        opacity = old_opacity;
+        brush_origin = old_brush_origin;
+        q->updateCompositionMode(old_composition_mode);
+        matrix = old_matrix;
+        cbrush = old_brush;
+        brush_style = old_brush.style();
+
+        high_quality_antialiasing = hqaa_old;
+
+        setGLBrush(old_brush.color());
+        qt_glColor4ubv(brush_color);
+
+        drawQueue.clear();
+
+        glPopMatrix();
+    }
+#endif
+}
+
+void QOpenGLPaintEngine::clipEnabledChanged()
+{
+    Q_D(QOpenGLPaintEngine);
+
+    d->updateDepthClip();
+}
+
+void QOpenGLPaintEngine::penChanged()
+{
+    updatePen(state()->pen);
+}
+
+void QOpenGLPaintEngine::brushChanged()
+{
+    updateBrush(state()->brush, state()->brushOrigin);
+}
+
+void QOpenGLPaintEngine::brushOriginChanged()
+{
+    updateBrush(state()->brush, state()->brushOrigin);
+}
+
+void QOpenGLPaintEngine::opacityChanged()
+{
+    Q_D(QOpenGLPaintEngine);
+    QPainterState *s = state();
+    d->opacity = s->opacity;
+    updateBrush(s->brush, s->brushOrigin);
+    updatePen(s->pen);
+}
+
+void QOpenGLPaintEngine::compositionModeChanged()
+{
+    updateCompositionMode(state()->composition_mode);
+}
+
+void QOpenGLPaintEngine::renderHintsChanged()
+{
+    updateRenderHints(state()->renderHints);
+}
+
+void QOpenGLPaintEngine::transformChanged()
+{
+    updateMatrix(state()->matrix);
+}
+
+static QPainterPath painterPathFromVectorPath(const QVectorPath &path)
+{
+    const qreal *points = path.points();
+    const QPainterPath::ElementType *types = path.elements();
+
+    QPainterPath p;
+    if (types) {
+        int id = 0;
+        for (int i=0; i<path.elementCount(); ++i) {
+            switch(types[i]) {
+            case QPainterPath::MoveToElement:
+                p.moveTo(QPointF(points[id], points[id+1]));
+                id+=2;
+                break;
+            case QPainterPath::LineToElement:
+                p.lineTo(QPointF(points[id], points[id+1]));
+                id+=2;
+                break;
+            case QPainterPath::CurveToElement: {
+                QPointF p1(points[id], points[id+1]);
+                QPointF p2(points[id+2], points[id+3]);
+                QPointF p3(points[id+4], points[id+5]);
+                p.cubicTo(p1, p2, p3);
+                id+=6;
+                break;
+            }
+            case QPainterPath::CurveToDataElement:
+                ;
+                break;
+            }
+        }
+    } else {
+        p.moveTo(QPointF(points[0], points[1]));
+        int id = 2;
+        for (int i=1; i<path.elementCount(); ++i) {
+            p.lineTo(QPointF(points[id], points[id+1]));
+            id+=2;
+        }
+    }
+    if (path.hints() & QVectorPath::WindingFill)
+        p.setFillRule(Qt::WindingFill);
+
+    return p;
+}
+
+void QOpenGLPaintEngine::fill(const QVectorPath &path, const QBrush &brush)
+{
+    Q_D(QOpenGLPaintEngine);
+
+    if (brush.style() == Qt::NoBrush)
+        return;
+
+    if (!d->use_fragment_programs && needsEmulation(brush.style())) {
+        QPainter *p = painter();
+        QBrush oldBrush = p->brush();
+        p->setBrush(brush);
+        qt_draw_helper(p->d_ptr.data(), painterPathFromVectorPath(path), QPainterPrivate::FillDraw);
+        p->setBrush(oldBrush);
+        return;
+    }
+
+    QBrush old_brush = state()->brush;
+    updateBrush(brush, state()->brushOrigin);
+
+    const qreal *points = path.points();
+    const QPainterPath::ElementType *types = path.elements();
+    if (!types && path.shape() == QVectorPath::RectangleHint) {
+        QRectF r(points[0], points[1], points[4]-points[0], points[5]-points[1]);
+        QPen old_pen = state()->pen;
+        updatePen(Qt::NoPen);
+        drawRects(&r, 1);
+        updatePen(old_pen);
+    } else {
+        d->fillPath(painterPathFromVectorPath(path));
+    }
+
+    updateBrush(old_brush, state()->brushOrigin);
+}
+
+template <typename T> static inline bool isRect(const T *pts, int elementCount) {
+    return (elementCount == 5 // 5-point polygon, check for closed rect
+            && pts[0] == pts[8] && pts[1] == pts[9] // last point == first point
+            && pts[0] == pts[6] && pts[2] == pts[4] // x values equal
+            && pts[1] == pts[3] && pts[5] == pts[7] // y values equal...
+            ) ||
+           (elementCount == 4 // 4-point polygon, check for unclosed rect
+            && pts[0] == pts[6] && pts[2] == pts[4] // x values equal
+            && pts[1] == pts[3] && pts[5] == pts[7] // y values equal...
+            );
+}
+
+void QOpenGLPaintEngine::clip(const QVectorPath &path, Qt::ClipOperation op)
+{
+    const qreal *points = path.points();
+    const QPainterPath::ElementType *types = path.elements();
+    if (!types && path.shape() == QVectorPath::RectangleHint) {
+        QRectF r(points[0], points[1], points[4]-points[0], points[5]-points[1]);
+        updateClipRegion(QRegion(r.toRect()), op);
+        return;
+    }
+
+    QPainterPath p;
+    if (types) {
+        int id = 0;
+        for (int i=0; i<path.elementCount(); ++i) {
+            switch(types[i]) {
+            case QPainterPath::MoveToElement:
+                p.moveTo(QPointF(points[id], points[id+1]));
+                id+=2;
+                break;
+            case QPainterPath::LineToElement:
+                p.lineTo(QPointF(points[id], points[id+1]));
+                id+=2;
+                break;
+            case QPainterPath::CurveToElement: {
+                QPointF p1(points[id], points[id+1]);
+                QPointF p2(points[id+2], points[id+3]);
+                QPointF p3(points[id+4], points[id+5]);
+                p.cubicTo(p1, p2, p3);
+                id+=6;
+                break;
+            }
+            case QPainterPath::CurveToDataElement:
+                ;
+                break;
+            }
+        }
+    } else if (!path.isEmpty()) {
+        p.moveTo(QPointF(points[0], points[1]));
+        int id = 2;
+        for (int i=1; i<path.elementCount(); ++i) {
+            p.lineTo(QPointF(points[id], points[id+1]));
+            id+=2;
+        }
+    }
+    if (path.hints() & QVectorPath::WindingFill)
+        p.setFillRule(Qt::WindingFill);
+
+    updateClipRegion(QRegion(p.toFillPolygon().toPolygon(), p.fillRule()), op);
+    return;
+}
+
+void QOpenGLPaintEngine::setState(QPainterState *s)
+{
+    Q_D(QOpenGLPaintEngine);
+    QOpenGLPaintEngineState *new_state = static_cast<QOpenGLPaintEngineState *>(s);
+    QOpenGLPaintEngineState *old_state = state();
+
+    QPaintEngineEx::setState(s);
+
+    // are we in a save() ?
+    if (s == d->last_created_state) {
+        d->last_created_state = 0;
+        return;
+    }
+
+    if (isActive()) {
+        if (old_state->depthClipId != new_state->depthClipId)
+            d->updateDepthClip();
+        penChanged();
+        brushChanged();
+        opacityChanged();
+        compositionModeChanged();
+        renderHintsChanged();
+        transformChanged();
+    }
+}
+
+QPainterState *QOpenGLPaintEngine::createState(QPainterState *orig) const
+{
+    const Q_D(QOpenGLPaintEngine);
+
+    QOpenGLPaintEngineState *s;
+    if (!orig)
+        s = new QOpenGLPaintEngineState();
+    else
+        s = new QOpenGLPaintEngineState(*static_cast<QOpenGLPaintEngineState *>(orig));
+
+    d->last_created_state = s;
+    return s;
+}
+
+//
+//  QOpenGLPaintEngineState
+//
+
+QOpenGLPaintEngineState::QOpenGLPaintEngineState(QOpenGLPaintEngineState &other)
+    : QPainterState(other)
+{
+    clipRegion = other.clipRegion;
+    hasClipping = other.hasClipping;
+    fastClip = other.fastClip;
+    depthClipId = other.depthClipId;
+}
+
+QOpenGLPaintEngineState::QOpenGLPaintEngineState()
+{
+    hasClipping = false;
+    depthClipId = 0;
+}
+
+QOpenGLPaintEngineState::~QOpenGLPaintEngineState()
+{
+}
+
+void QOpenGLPaintEnginePrivate::ensureDrawableTexture()
+{
+    if (!dirty_drawable_texture)
+        return;
+
+    dirty_drawable_texture = false;
+
+#ifndef QT_OPENGL_ES
+    glGenTextures(1, &drawable_texture);
+    glBindTexture(GL_TEXTURE_2D, drawable_texture);
+
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8,
+            drawable_texture_size.width(),
+            drawable_texture_size.height(), 0,
+            GL_RGBA, GL_UNSIGNED_BYTE, NULL);
+
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+#endif
+}
+
+QT_END_NAMESPACE
+
+#include "qpaintengine_opengl.moc"
diff --git a/src/opengl/qpaintengine_opengl_p.h b/src/opengl/qpaintengine_opengl_p.h
new file mode 100644
index 0000000000..8f12be40f6
--- /dev/null
+++ b/src/opengl/qpaintengine_opengl_p.h
@@ -0,0 +1,157 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QPAINTENGINE_OPENGL_P_H
+#define QPAINTENGINE_OPENGL_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of the QLibrary class.  This header file may change from
+// version to version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <private/qpaintengineex_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QOpenGLPaintEnginePrivate;
+class QGLTexture;
+
+class QOpenGLPaintEngineState : public QPainterState
+{
+public:
+    QOpenGLPaintEngineState(QOpenGLPaintEngineState &other);
+    QOpenGLPaintEngineState();
+    ~QOpenGLPaintEngineState();
+
+    QRegion clipRegion;
+    bool hasClipping;
+    QRect fastClip;
+    uint depthClipId;
+};
+
+class QOpenGLPaintEngine : public QPaintEngineEx
+{
+    Q_DECLARE_PRIVATE(QOpenGLPaintEngine)
+public:
+    QOpenGLPaintEngine();
+    ~QOpenGLPaintEngine();
+
+    bool begin(QPaintDevice *pdev);
+    bool end();
+
+    // new stuff
+    void clipEnabledChanged();
+    void penChanged();
+    void brushChanged();
+    void brushOriginChanged();
+    void opacityChanged();
+    void compositionModeChanged();
+    void renderHintsChanged();
+    void transformChanged();
+
+    void fill(const QVectorPath &path, const QBrush &brush);
+    void clip(const QVectorPath &path, Qt::ClipOperation op);
+
+    void setState(QPainterState *s);
+    QPainterState *createState(QPainterState *orig) const;
+    inline QOpenGLPaintEngineState *state() {
+        return static_cast<QOpenGLPaintEngineState *>(QPaintEngineEx::state());
+    }
+    inline const QOpenGLPaintEngineState *state() const {
+        return static_cast<const QOpenGLPaintEngineState *>(QPaintEngineEx::state());
+    }
+
+
+    // old stuff
+    void updateState(const QPaintEngineState &state);
+
+    void updatePen(const QPen &pen);
+    void updateBrush(const QBrush &brush, const QPointF &pt);
+    void updateFont(const QFont &font);
+    void updateMatrix(const QTransform &matrix);
+    void updateClipRegion(const QRegion &region, Qt::ClipOperation op);
+    void updateRenderHints(QPainter::RenderHints hints);
+    void updateCompositionMode(QPainter::CompositionMode composition_mode);
+
+    void drawRects(const QRectF *r, int rectCount);
+    void drawLines(const QLineF *lines, int lineCount);
+    void drawPoints(const QPointF *p, int pointCount);
+    void drawRects(const QRect *r, int rectCount);
+    void drawLines(const QLine *lines, int lineCount);
+    void drawPoints(const QPoint *p, int pointCount);
+
+    void drawPixmap(const QRectF &r, const QPixmap &pm, const QRectF &sr);
+
+    void drawPath(const QPainterPath &path);
+    void drawPolygon(const QPointF *points, int pointCount, PolygonDrawMode mode);
+    void drawPolygon(const QPoint *points, int pointCount, PolygonDrawMode mode);
+    void drawTiledPixmap(const QRectF &r, const QPixmap &pixmap, const QPointF &s);
+    void drawImage(const QRectF &r, const QImage &image, const QRectF &sr,
+                   Qt::ImageConversionFlags conversionFlags);
+    void drawTextItem(const QPointF &p, const QTextItem &ti);
+    void drawStaticTextItem(QStaticTextItem *staticTextItem);
+
+    void drawEllipse(const QRectF &rect);
+
+#ifdef Q_WS_WIN
+    HDC handle() const;
+#else
+    Qt::HANDLE handle() const;
+#endif
+    inline Type type() const { return QPaintEngine::OpenGL; }
+
+private:
+    void drawPolyInternal(const QPolygonF &pa, bool close = true);
+    void drawTextureRect(int tx_width, int tx_height, const QRectF &r, const QRectF &sr,
+                         GLenum target, QGLTexture *tex);
+    Q_DISABLE_COPY(QOpenGLPaintEngine)
+};
+
+
+QT_END_NAMESPACE
+
+#endif // QPAINTENGINE_OPENGL_P_H
diff --git a/src/opengl/qpixmapdata_gl.cpp b/src/opengl/qpixmapdata_gl.cpp
new file mode 100644
index 0000000000..45722d1bf9
--- /dev/null
+++ b/src/opengl/qpixmapdata_gl.cpp
@@ -0,0 +1,829 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qpixmap.h"
+#include "qglframebufferobject.h"
+
+#include <private/qpaintengine_raster_p.h>
+
+#include "qpixmapdata_gl_p.h"
+
+#include <private/qgl_p.h>
+#include <private/qdrawhelper_p.h>
+#include <private/qimage_p.h>
+#include <private/qfont_p.h>
+
+#include <private/qpaintengineex_opengl2_p.h>
+
+#include <qdesktopwidget.h>
+#include <qfile.h>
+#include <qimagereader.h>
+#include <qbuffer.h>
+
+QT_BEGIN_NAMESPACE
+
+Q_OPENGL_EXPORT extern const QGLContext* qt_gl_share_context();
+
+/*!
+    \class QGLFramebufferObjectPool
+    \since 4.6
+
+    \brief The QGLFramebufferObject class provides a pool of framebuffer
+    objects for offscreen rendering purposes.
+
+    When requesting an FBO of a given size and format, an FBO of the same
+    format and a size at least as big as the requested size will be returned.
+
+    \internal
+*/
+
+static inline int areaDiff(const QSize &size, const QGLFramebufferObject *fbo)
+{
+    return qAbs(size.width() * size.height() - fbo->width() * fbo->height());
+}
+
+extern int qt_next_power_of_two(int v);
+
+static inline QSize maybeRoundToNextPowerOfTwo(const QSize &sz)
+{
+#ifdef QT_OPENGL_ES_2
+    QSize rounded(qt_next_power_of_two(sz.width()), qt_next_power_of_two(sz.height()));
+    if (rounded.width() * rounded.height() < 1.20 * sz.width() * sz.height())
+        return rounded;
+#endif
+    return sz;
+}
+
+
+QGLFramebufferObject *QGLFramebufferObjectPool::acquire(const QSize &requestSize, const QGLFramebufferObjectFormat &requestFormat, bool strictSize)
+{
+    QGLFramebufferObject *chosen = 0;
+    QGLFramebufferObject *candidate = 0;
+    for (int i = 0; !chosen && i < m_fbos.size(); ++i) {
+        QGLFramebufferObject *fbo = m_fbos.at(i);
+
+        if (strictSize) {
+            if (fbo->size() == requestSize && fbo->format() == requestFormat) {
+                chosen = fbo;
+                break;
+            } else {
+                continue;
+            }
+        }
+
+        if (fbo->format() == requestFormat) {
+            // choose the fbo with a matching format and the closest size
+            if (!candidate || areaDiff(requestSize, candidate) > areaDiff(requestSize, fbo))
+                candidate = fbo;
+        }
+
+        if (candidate) {
+            m_fbos.removeOne(candidate);
+
+            const QSize fboSize = candidate->size();
+            QSize sz = fboSize;
+
+            if (sz.width() < requestSize.width())
+                sz.setWidth(qMax(requestSize.width(), qRound(sz.width() * 1.5)));
+            if (sz.height() < requestSize.height())
+                sz.setHeight(qMax(requestSize.height(), qRound(sz.height() * 1.5)));
+
+            // wasting too much space?
+            if (sz.width() * sz.height() > requestSize.width() * requestSize.height() * 4)
+                sz = requestSize;
+
+            if (sz != fboSize) {
+                delete candidate;
+                candidate = new QGLFramebufferObject(maybeRoundToNextPowerOfTwo(sz), requestFormat);
+            }
+
+            chosen = candidate;
+        }
+    }
+
+    if (!chosen) {
+        if (strictSize)
+            chosen = new QGLFramebufferObject(requestSize, requestFormat);
+        else
+            chosen = new QGLFramebufferObject(maybeRoundToNextPowerOfTwo(requestSize), requestFormat);
+    }
+
+    if (!chosen->isValid()) {
+        delete chosen;
+        chosen = 0;
+    }
+
+    return chosen;
+}
+
+void QGLFramebufferObjectPool::release(QGLFramebufferObject *fbo)
+{
+    if (fbo)
+        m_fbos << fbo;
+}
+
+
+QPaintEngine* QGLPixmapGLPaintDevice::paintEngine() const
+{
+    return data->paintEngine();
+}
+
+void QGLPixmapGLPaintDevice::beginPaint()
+{
+    if (!data->isValid())
+        return;
+
+    // QGLPaintDevice::beginPaint will store the current binding and replace
+    // it with m_thisFBO:
+    m_thisFBO = data->m_renderFbo->handle();
+    QGLPaintDevice::beginPaint();
+
+    Q_ASSERT(data->paintEngine()->type() == QPaintEngine::OpenGL2);
+
+    // QPixmap::fill() is deferred until now, where we actually need to do the fill:
+    if (data->needsFill()) {
+        const QColor &c = data->fillColor();
+        float alpha = c.alphaF();
+        glDisable(GL_SCISSOR_TEST);
+        glClearColor(c.redF() * alpha, c.greenF() * alpha, c.blueF() * alpha, alpha);
+        glClear(GL_COLOR_BUFFER_BIT);
+    }
+    else if (!data->isUninitialized()) {
+        // If the pixmap (GL Texture) has valid content (it has been
+        // uploaded from an image or rendered into before), we need to
+        // copy it from the texture to the render FBO.
+
+        glDisable(GL_DEPTH_TEST);
+        glDisable(GL_SCISSOR_TEST);
+        glDisable(GL_BLEND);
+
+#if !defined(QT_OPENGL_ES_2)
+        glMatrixMode(GL_MODELVIEW);
+        glLoadIdentity();
+
+        glMatrixMode(GL_PROJECTION);
+        glLoadIdentity();
+        glOrtho(0, data->width(), data->height(), 0, -999999, 999999);
+#endif
+
+        glViewport(0, 0, data->width(), data->height());
+
+        // Pass false to bind so it doesn't copy the FBO into the texture!
+        context()->drawTexture(QRect(0, 0, data->width(), data->height()), data->bind(false));
+    }
+}
+
+void QGLPixmapGLPaintDevice::endPaint()
+{
+    if (!data->isValid())
+        return;
+
+    data->copyBackFromRenderFbo(false);
+
+    // Base's endPaint will restore the previous FBO binding
+    QGLPaintDevice::endPaint();
+
+    qgl_fbo_pool()->release(data->m_renderFbo);
+    data->m_renderFbo = 0;
+}
+
+QGLContext* QGLPixmapGLPaintDevice::context() const
+{
+    data->ensureCreated();
+    return data->m_ctx;
+}
+
+QSize QGLPixmapGLPaintDevice::size() const
+{
+    return data->size();
+}
+
+bool QGLPixmapGLPaintDevice::alphaRequested() const
+{
+    return data->m_hasAlpha;
+}
+
+void QGLPixmapGLPaintDevice::setPixmapData(QGLPixmapData* d)
+{
+    data = d;
+}
+
+static int qt_gl_pixmap_serial = 0;
+
+QGLPixmapData::QGLPixmapData(PixelType type)
+    : QPixmapData(type, OpenGLClass)
+    , m_renderFbo(0)
+    , m_engine(0)
+    , m_ctx(0)
+    , m_dirty(false)
+    , m_hasFillColor(false)
+    , m_hasAlpha(false)
+{
+    setSerialNumber(++qt_gl_pixmap_serial);
+    m_glDevice.setPixmapData(this);
+}
+
+QGLPixmapData::~QGLPixmapData()
+{
+    const QGLContext *shareContext = qt_gl_share_context();
+    if (!shareContext)
+        return;
+
+    delete m_engine;
+
+    if (m_texture.id) {
+        QGLShareContextScope ctx(shareContext);
+        glDeleteTextures(1, &m_texture.id);
+    }
+}
+
+QPixmapData *QGLPixmapData::createCompatiblePixmapData() const
+{
+    return new QGLPixmapData(pixelType());
+}
+
+bool QGLPixmapData::isValid() const
+{
+    return w > 0 && h > 0;
+}
+
+bool QGLPixmapData::isValidContext(const QGLContext *ctx) const
+{
+    if (ctx == m_ctx)
+        return true;
+
+    const QGLContext *share_ctx = qt_gl_share_context();
+    return ctx == share_ctx || QGLContext::areSharing(ctx, share_ctx);
+}
+
+void QGLPixmapData::resize(int width, int height)
+{
+    if (width == w && height == h)
+        return;
+
+    if (width <= 0 || height <= 0) {
+        width = 0;
+        height = 0;
+    }
+
+    w = width;
+    h = height;
+    is_null = (w <= 0 || h <= 0);
+    d = pixelType() == QPixmapData::PixmapType ? 32 : 1;
+
+    if (m_texture.id) {
+        QGLShareContextScope ctx(qt_gl_share_context());
+        glDeleteTextures(1, &m_texture.id);
+        m_texture.id = 0;
+    }
+
+    m_source = QImage();
+    m_dirty = isValid();
+    setSerialNumber(++qt_gl_pixmap_serial);
+}
+
+void QGLPixmapData::ensureCreated() const
+{
+    if (!m_dirty)
+        return;
+
+    m_dirty = false;
+
+    QGLShareContextScope ctx(qt_gl_share_context());
+    m_ctx = ctx;
+
+    const GLenum internal_format = m_hasAlpha ? GL_RGBA : GL_RGB;
+#ifdef QT_OPENGL_ES_2
+    const GLenum external_format = internal_format;
+#else
+    const GLenum external_format = qt_gl_preferredTextureFormat();
+#endif
+    const GLenum target = GL_TEXTURE_2D;
+
+    if (!m_texture.id) {
+        glGenTextures(1, &m_texture.id);
+        glBindTexture(target, m_texture.id);
+        glTexImage2D(target, 0, internal_format, w, h, 0, external_format, GL_UNSIGNED_BYTE, 0);
+        glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+        glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+    }
+
+    if (!m_source.isNull()) {
+        if (external_format == GL_RGB) {
+            const QImage tx = m_source.convertToFormat(QImage::Format_RGB888).mirrored(false, true);
+
+            glBindTexture(target, m_texture.id);
+            glTexSubImage2D(target, 0, 0, 0, w, h, external_format,
+                            GL_UNSIGNED_BYTE, tx.bits());
+        } else {
+            const QImage tx = ctx->d_func()->convertToGLFormat(m_source, true, external_format);
+
+            glBindTexture(target, m_texture.id);
+            glTexSubImage2D(target, 0, 0, 0, w, h, external_format,
+                            GL_UNSIGNED_BYTE, tx.bits());
+        }
+
+        if (useFramebufferObjects())
+            m_source = QImage();
+    }
+
+    m_texture.options &= ~QGLContext::MemoryManagedBindOption;
+}
+
+void QGLPixmapData::fromImage(const QImage &image,
+                              Qt::ImageConversionFlags flags)
+{
+    QImage img = image;
+    createPixmapForImage(img, flags, false);
+}
+
+void QGLPixmapData::fromImageReader(QImageReader *imageReader,
+                                 Qt::ImageConversionFlags flags)
+{
+    QImage image = imageReader->read();
+    if (image.isNull())
+        return;
+
+    createPixmapForImage(image, flags, true);
+}
+
+bool QGLPixmapData::fromFile(const QString &filename, const char *format,
+                             Qt::ImageConversionFlags flags)
+{
+    if (pixelType() == QPixmapData::BitmapType)
+        return QPixmapData::fromFile(filename, format, flags);
+    QFile file(filename);
+    if (file.open(QIODevice::ReadOnly)) {
+        QByteArray data = file.peek(64);
+        bool alpha;
+        if (m_texture.canBindCompressedTexture
+                (data.constData(), data.size(), format, &alpha)) {
+            resize(0, 0);
+            data = file.readAll();
+            file.close();
+            QGLShareContextScope ctx(qt_gl_share_context());
+            QSize size = m_texture.bindCompressedTexture
+                (data.constData(), data.size(), format);
+            if (!size.isEmpty()) {
+                w = size.width();
+                h = size.height();
+                is_null = false;
+                d = 32;
+                m_hasAlpha = alpha;
+                m_source = QImage();
+                m_dirty = isValid();
+                return true;
+            }
+            return false;
+        }
+    }
+
+    QImage image = QImageReader(filename, format).read();
+    if (image.isNull())
+        return false;
+
+    createPixmapForImage(image, flags, true);
+
+    return !isNull();
+}
+
+bool QGLPixmapData::fromData(const uchar *buffer, uint len, const char *format,
+                             Qt::ImageConversionFlags flags)
+{
+    bool alpha;
+    const char *buf = reinterpret_cast<const char *>(buffer);
+    if (m_texture.canBindCompressedTexture(buf, int(len), format, &alpha)) {
+        resize(0, 0);
+        QGLShareContextScope ctx(qt_gl_share_context());
+        QSize size = m_texture.bindCompressedTexture(buf, int(len), format);
+        if (!size.isEmpty()) {
+            w = size.width();
+            h = size.height();
+            is_null = false;
+            d = 32;
+            m_hasAlpha = alpha;
+            m_source = QImage();
+            m_dirty = isValid();
+            return true;
+        }
+    }
+
+    QByteArray a = QByteArray::fromRawData(reinterpret_cast<const char *>(buffer), len);
+    QBuffer b(&a);
+    b.open(QIODevice::ReadOnly);
+    QImage image = QImageReader(&b, format).read();
+    if (image.isNull())
+        return false;
+
+    createPixmapForImage(image, flags, true);
+
+    return !isNull();
+}
+
+/*!
+    out-of-place conversion (inPlace == false) will always detach()
+ */
+void QGLPixmapData::createPixmapForImage(QImage &image, Qt::ImageConversionFlags flags, bool inPlace)
+{
+    if (image.size() == QSize(w, h))
+        setSerialNumber(++qt_gl_pixmap_serial);
+
+    resize(image.width(), image.height());
+
+    if (pixelType() == BitmapType) {
+        m_source = image.convertToFormat(QImage::Format_MonoLSB);
+
+    } else {
+        QImage::Format format = QImage::Format_RGB32;
+        if (qApp->desktop()->depth() == 16)
+            format = QImage::Format_RGB16;
+
+        if (image.hasAlphaChannel()
+            && ((flags & Qt::NoOpaqueDetection)
+                || const_cast<QImage &>(image).data_ptr()->checkForAlphaPixels()))
+            format = QImage::Format_ARGB32_Premultiplied;;
+
+        if (inPlace && image.data_ptr()->convertInPlace(format, flags)) {
+            m_source = image;
+        } else {
+            m_source = image.convertToFormat(format);
+
+            // convertToFormat won't detach the image if format stays the same.
+            if (image.format() == format)
+                m_source.detach();
+        }
+    }
+
+    m_dirty = true;
+    m_hasFillColor = false;
+
+    m_hasAlpha = m_source.hasAlphaChannel();
+    w = image.width();
+    h = image.height();
+    is_null = (w <= 0 || h <= 0);
+    d = m_source.depth();
+
+    if (m_texture.id) {
+        QGLShareContextScope ctx(qt_gl_share_context());
+        glDeleteTextures(1, &m_texture.id);
+        m_texture.id = 0;
+    }
+}
+
+bool QGLPixmapData::scroll(int dx, int dy, const QRect &rect)
+{
+    Q_UNUSED(dx);
+    Q_UNUSED(dy);
+    Q_UNUSED(rect);
+    return false;
+}
+
+void QGLPixmapData::copy(const QPixmapData *data, const QRect &rect)
+{
+    if (data->classId() != QPixmapData::OpenGLClass || !static_cast<const QGLPixmapData *>(data)->useFramebufferObjects()) {
+        QPixmapData::copy(data, rect);
+        return;
+    }
+
+    const QGLPixmapData *other = static_cast<const QGLPixmapData *>(data);
+    if (other->m_renderFbo) {
+        QGLShareContextScope ctx(qt_gl_share_context());
+
+        resize(rect.width(), rect.height());
+        m_hasAlpha = other->m_hasAlpha;
+        ensureCreated();
+
+        if (!ctx->d_ptr->fbo)
+            glGenFramebuffers(1, &ctx->d_ptr->fbo);
+
+        glBindFramebuffer(GL_DRAW_FRAMEBUFFER_EXT, ctx->d_ptr->fbo);
+        glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
+                GL_TEXTURE_2D, m_texture.id, 0);
+
+        if (!other->m_renderFbo->isBound())
+            glBindFramebuffer(GL_READ_FRAMEBUFFER_EXT, other->m_renderFbo->handle());
+
+        glDisable(GL_SCISSOR_TEST);
+        if (ctx->d_ptr->active_engine && ctx->d_ptr->active_engine->type() == QPaintEngine::OpenGL2)
+            static_cast<QGL2PaintEngineEx *>(ctx->d_ptr->active_engine)->invalidateState();
+
+        glBlitFramebufferEXT(rect.x(), rect.y(), rect.x() + rect.width(), rect.y() + rect.height(),
+                0, 0, w, h,
+                GL_COLOR_BUFFER_BIT,
+                GL_NEAREST);
+
+        glBindFramebuffer(GL_FRAMEBUFFER_EXT, ctx->d_ptr->current_fbo);
+    } else {
+        QPixmapData::copy(data, rect);
+    }
+}
+
+void QGLPixmapData::fill(const QColor &color)
+{
+    if (!isValid())
+        return;
+
+    bool hasAlpha = color.alpha() != 255;
+    if (hasAlpha && !m_hasAlpha) {
+        if (m_texture.id) {
+            glDeleteTextures(1, &m_texture.id);
+            m_texture.id = 0;
+            m_dirty = true;
+        }
+        m_hasAlpha = color.alpha() != 255;
+    }
+
+    if (useFramebufferObjects()) {
+        m_source = QImage();
+        m_hasFillColor = true;
+        m_fillColor = color;
+    } else {
+
+        if (m_source.isNull()) {
+            m_fillColor = color;
+            m_hasFillColor = true;
+
+        } else if (m_source.depth() == 32) {
+            m_source.fill(PREMUL(color.rgba()));
+
+        } else if (m_source.depth() == 1) {
+            if (color == Qt::color1)
+                m_source.fill(1);
+            else
+                m_source.fill(0);
+        }
+    }
+}
+
+bool QGLPixmapData::hasAlphaChannel() const
+{
+    return m_hasAlpha;
+}
+
+QImage QGLPixmapData::fillImage(const QColor &color) const
+{
+    QImage img;
+    if (pixelType() == BitmapType) {
+        img = QImage(w, h, QImage::Format_MonoLSB);
+
+        img.setColorCount(2);
+        img.setColor(0, QColor(Qt::color0).rgba());
+        img.setColor(1, QColor(Qt::color1).rgba());
+
+        if (color == Qt::color1)
+            img.fill(1);
+        else
+            img.fill(0);
+    } else {
+        img = QImage(w, h,
+                m_hasAlpha
+                ? QImage::Format_ARGB32_Premultiplied
+                : QImage::Format_RGB32);
+        img.fill(PREMUL(color.rgba()));
+    }
+    return img;
+}
+
+extern QImage qt_gl_read_texture(const QSize &size, bool alpha_format, bool include_alpha);
+
+QImage QGLPixmapData::toImage() const
+{
+    if (!isValid())
+        return QImage();
+
+    if (m_renderFbo) {
+        copyBackFromRenderFbo(true);
+    } else if (!m_source.isNull()) {
+        QImageData *data = const_cast<QImage &>(m_source).data_ptr();
+        if (data->paintEngine && data->paintEngine->isActive()
+            && data->paintEngine->paintDevice() == &m_source)
+        {
+            return m_source.copy();
+        }
+        return m_source;
+    } else if (m_dirty || m_hasFillColor) {
+        return fillImage(m_fillColor);
+    } else {
+        ensureCreated();
+    }
+
+    QGLShareContextScope ctx(qt_gl_share_context());
+    glBindTexture(GL_TEXTURE_2D, m_texture.id);
+    return qt_gl_read_texture(QSize(w, h), true, true);
+}
+
+struct TextureBuffer
+{
+    QGLFramebufferObject *fbo;
+    QGL2PaintEngineEx *engine;
+};
+
+Q_GLOBAL_STATIC(QGLFramebufferObjectPool, _qgl_fbo_pool)
+QGLFramebufferObjectPool* qgl_fbo_pool()
+{
+    return _qgl_fbo_pool();
+}
+
+void QGLPixmapData::copyBackFromRenderFbo(bool keepCurrentFboBound) const
+{
+    if (!isValid())
+        return;
+
+    m_hasFillColor = false;
+
+    const QGLContext *share_ctx = qt_gl_share_context();
+    QGLShareContextScope ctx(share_ctx);
+
+    ensureCreated();
+
+    if (!ctx->d_ptr->fbo)
+        glGenFramebuffers(1, &ctx->d_ptr->fbo);
+
+    glBindFramebuffer(GL_DRAW_FRAMEBUFFER_EXT, ctx->d_ptr->fbo);
+    glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
+        GL_TEXTURE_2D, m_texture.id, 0);
+
+    const int x0 = 0;
+    const int x1 = w;
+    const int y0 = 0;
+    const int y1 = h;
+
+    if (!m_renderFbo->isBound())
+        glBindFramebuffer(GL_READ_FRAMEBUFFER_EXT, m_renderFbo->handle());
+
+    glDisable(GL_SCISSOR_TEST);
+
+    glBlitFramebufferEXT(x0, y0, x1, y1,
+            x0, y0, x1, y1,
+            GL_COLOR_BUFFER_BIT,
+            GL_NEAREST);
+
+    if (keepCurrentFboBound) {
+        glBindFramebuffer(GL_FRAMEBUFFER_EXT, ctx->d_ptr->current_fbo);
+    } else {
+        glBindFramebuffer(GL_DRAW_FRAMEBUFFER_EXT, m_renderFbo->handle());
+        ctx->d_ptr->current_fbo = m_renderFbo->handle();
+    }
+}
+
+bool QGLPixmapData::useFramebufferObjects() const
+{
+    return QGLFramebufferObject::hasOpenGLFramebufferObjects()
+           && QGLFramebufferObject::hasOpenGLFramebufferBlit()
+           && qt_gl_preferGL2Engine()
+           && (w * h > 32*32); // avoid overhead of FBOs for small pixmaps
+}
+
+QPaintEngine* QGLPixmapData::paintEngine() const
+{
+    if (!isValid())
+        return 0;
+
+    if (m_renderFbo)
+        return m_engine;
+
+    if (useFramebufferObjects()) {
+        extern QGLWidget* qt_gl_share_widget();
+
+        if (!QGLContext::currentContext())
+            const_cast<QGLContext *>(qt_gl_share_context())->makeCurrent();
+        QGLShareContextScope ctx(qt_gl_share_context());
+
+        QGLFramebufferObjectFormat format;
+        format.setAttachment(QGLFramebufferObject::CombinedDepthStencil);
+        format.setSamples(4);
+        format.setInternalTextureFormat(GLenum(m_hasAlpha ? GL_RGBA : GL_RGB));
+
+        m_renderFbo = qgl_fbo_pool()->acquire(size(), format);
+
+        if (m_renderFbo) {
+            if (!m_engine)
+                m_engine = new QGL2PaintEngineEx;
+            return m_engine;
+        }
+
+        qWarning() << "Failed to create pixmap texture buffer of size " << size() << ", falling back to raster paint engine";
+    }
+
+    m_dirty = true;
+    if (m_source.size() != size())
+        m_source = QImage(size(), QImage::Format_ARGB32_Premultiplied);
+    if (m_hasFillColor) {
+        m_source.fill(PREMUL(m_fillColor.rgba()));
+        m_hasFillColor = false;
+    }
+    return m_source.paintEngine();
+}
+
+extern QRgb qt_gl_convertToGLFormat(QRgb src_pixel, GLenum texture_format);
+
+// If copyBack is true, bind will copy the contents of the render
+// FBO to the texture (which is not bound to the texture, as it's
+// a multisample FBO).
+GLuint QGLPixmapData::bind(bool copyBack) const
+{
+    if (m_renderFbo && copyBack) {
+        copyBackFromRenderFbo(true);
+    } else {
+        ensureCreated();
+    }
+
+    GLuint id = m_texture.id;
+    glBindTexture(GL_TEXTURE_2D, id);
+
+    if (m_hasFillColor) {
+        if (!useFramebufferObjects()) {
+            m_source = QImage(w, h, QImage::Format_ARGB32_Premultiplied);
+            m_source.fill(PREMUL(m_fillColor.rgba()));
+        }
+
+        m_hasFillColor = false;
+
+        GLenum format = qt_gl_preferredTextureFormat();
+        QImage tx(w, h, QImage::Format_ARGB32_Premultiplied);
+        tx.fill(qt_gl_convertToGLFormat(m_fillColor.rgba(), format));
+        glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, w, h, format, GL_UNSIGNED_BYTE, tx.bits());
+    }
+
+    return id;
+}
+
+QGLTexture* QGLPixmapData::texture() const
+{
+    return &m_texture;
+}
+
+int QGLPixmapData::metric(QPaintDevice::PaintDeviceMetric metric) const
+{
+    if (w == 0)
+        return 0;
+
+    switch (metric) {
+    case QPaintDevice::PdmWidth:
+        return w;
+    case QPaintDevice::PdmHeight:
+        return h;
+    case QPaintDevice::PdmNumColors:
+        return 0;
+    case QPaintDevice::PdmDepth:
+        return d;
+    case QPaintDevice::PdmWidthMM:
+        return qRound(w * 25.4 / qt_defaultDpiX());
+    case QPaintDevice::PdmHeightMM:
+        return qRound(h * 25.4 / qt_defaultDpiY());
+    case QPaintDevice::PdmDpiX:
+    case QPaintDevice::PdmPhysicalDpiX:
+        return qt_defaultDpiX();
+    case QPaintDevice::PdmDpiY:
+    case QPaintDevice::PdmPhysicalDpiY:
+        return qt_defaultDpiY();
+    default:
+        qWarning("QGLPixmapData::metric(): Invalid metric");
+        return 0;
+    }
+}
+
+QGLPaintDevice *QGLPixmapData::glDevice() const
+{
+    return &m_glDevice;
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/qpixmapdata_gl_p.h b/src/opengl/qpixmapdata_gl_p.h
new file mode 100644
index 0000000000..8855c20362
--- /dev/null
+++ b/src/opengl/qpixmapdata_gl_p.h
@@ -0,0 +1,247 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QPIXMAPDATA_GL_P_H
+#define QPIXMAPDATA_GL_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qgl_p.h"
+#include "qgl.h"
+
+#include "private/qpixmapdata_p.h"
+#include "private/qglpaintdevice_p.h"
+
+#ifdef Q_OS_SYMBIAN
+#include "private/qvolatileimage_p.h"
+#endif
+
+QT_BEGIN_NAMESPACE
+
+class QPaintEngine;
+class QGLFramebufferObject;
+class QGLFramebufferObjectFormat;
+class QGLPixmapData;
+
+#ifdef QGL_USE_TEXTURE_POOL
+void qt_gl_register_pixmap(QGLPixmapData *pd);
+void qt_gl_unregister_pixmap(QGLPixmapData *pd);
+void qt_gl_hibernate_pixmaps();
+#endif
+
+#ifdef Q_OS_SYMBIAN
+class QNativeImageHandleProvider;
+#endif
+
+class QGLFramebufferObjectPool
+{
+public:
+    QGLFramebufferObject *acquire(const QSize &size, const QGLFramebufferObjectFormat &format, bool strictSize = false);
+    void release(QGLFramebufferObject *fbo);
+
+private:
+    QList<QGLFramebufferObject *> m_fbos;
+};
+
+QGLFramebufferObjectPool* qgl_fbo_pool();
+
+
+class QGLPixmapGLPaintDevice : public QGLPaintDevice
+{
+public:
+    QPaintEngine* paintEngine() const;
+
+    void beginPaint();
+    void endPaint();
+    QGLContext* context() const;
+    QSize size() const;
+    bool alphaRequested() const;
+
+    void setPixmapData(QGLPixmapData*);
+private:
+    QGLPixmapData *data;
+};
+
+
+class Q_OPENGL_EXPORT QGLPixmapData : public QPixmapData
+{
+public:
+    QGLPixmapData(PixelType type);
+    ~QGLPixmapData();
+
+    QPixmapData *createCompatiblePixmapData() const;
+
+    // Re-implemented from QPixmapData:
+    void resize(int width, int height);
+    void fromImage(const QImage &image, Qt::ImageConversionFlags flags);
+    void fromImageReader(QImageReader *imageReader,
+                          Qt::ImageConversionFlags flags);
+    bool fromFile(const QString &filename, const char *format,
+                  Qt::ImageConversionFlags flags);
+    bool fromData(const uchar *buffer, uint len, const char *format,
+                  Qt::ImageConversionFlags flags);
+    void copy(const QPixmapData *data, const QRect &rect);
+    bool scroll(int dx, int dy, const QRect &rect);
+    void fill(const QColor &color);
+    bool hasAlphaChannel() const;
+    QImage toImage() const;
+    QPaintEngine *paintEngine() const;
+    int metric(QPaintDevice::PaintDeviceMetric metric) const;
+
+    // For accessing as a target:
+    QGLPaintDevice *glDevice() const;
+
+    // For accessing as a source:
+    bool isValidContext(const QGLContext *ctx) const;
+    GLuint bind(bool copyBack = true) const;
+    QGLTexture *texture() const;
+
+#ifdef QGL_USE_TEXTURE_POOL
+    void destroyTexture();
+    // Detach this image from the image pool.
+    void detachTextureFromPool();
+    // Release the GL resources associated with this pixmap and copy
+    // the pixmap's contents out of the GPU back into main memory.
+    // The GL resource will be automatically recreated the next time
+    // ensureCreated() is called.  Does nothing if the pixmap cannot be
+    // hibernated for some reason (e.g. texture is shared with another
+    // process via a SgImage).
+    void hibernate();
+    // Called when the QGLTexturePool wants to reclaim this pixmap's
+    // texture objects to reuse storage.
+    void reclaimTexture();
+    void forceToImage();
+#endif
+
+#ifdef Q_OS_SYMBIAN
+    QImage::Format idealFormat(QImage &image, Qt::ImageConversionFlags flags);
+    void* toNativeType(NativeType type);
+    void fromNativeType(void* pixmap, NativeType type);
+    bool initFromNativeImageHandle(void *handle, const QString &type);
+    void createFromNativeImageHandleProvider();
+    void releaseNativeImageHandle();
+#endif
+
+private:
+    bool isValid() const;
+
+    void ensureCreated() const;
+
+    bool isUninitialized() const { return m_dirty && m_source.isNull(); }
+
+    bool needsFill() const { return m_hasFillColor; }
+    QColor fillColor() const { return m_fillColor; }
+
+
+
+    QGLPixmapData(const QGLPixmapData &other);
+    QGLPixmapData &operator=(const QGLPixmapData &other);
+
+    void copyBackFromRenderFbo(bool keepCurrentFboBound) const;
+    QSize size() const { return QSize(w, h); }
+
+    bool useFramebufferObjects() const;
+
+    QImage fillImage(const QColor &color) const;
+
+    void createPixmapForImage(QImage &image, Qt::ImageConversionFlags flags, bool inPlace);
+
+    mutable QGLFramebufferObject *m_renderFbo;
+    mutable QPaintEngine *m_engine;
+    mutable QGLContext *m_ctx;
+#ifdef Q_OS_SYMBIAN
+    mutable QVolatileImage m_source;
+    mutable QNativeImageHandleProvider *nativeImageHandleProvider;
+    void *nativeImageHandle;
+    QString nativeImageType;
+#else
+    mutable QImage m_source;
+#endif
+    mutable QGLTexture m_texture;
+
+    // the texture is not in sync with the source image
+    mutable bool m_dirty;
+
+    // fill has been called and no painting has been done, so the pixmap is
+    // represented by a single fill color
+    mutable QColor m_fillColor;
+    mutable bool m_hasFillColor;
+
+    mutable bool m_hasAlpha;
+
+    mutable QGLPixmapGLPaintDevice m_glDevice;
+
+#ifdef QGL_USE_TEXTURE_POOL
+    QGLPixmapData *nextLRU;
+    QGLPixmapData *prevLRU;
+    mutable bool inLRU;
+    mutable bool failedToAlloc;
+    mutable bool inTexturePool;
+
+    QGLPixmapData *next;
+    QGLPixmapData *prev;
+
+    friend class QGLTexturePool;
+
+    friend void qt_gl_register_pixmap(QGLPixmapData *pd);
+    friend void qt_gl_unregister_pixmap(QGLPixmapData *pd);
+    friend void qt_gl_hibernate_pixmaps();
+#endif
+
+    friend class QGLPixmapGLPaintDevice;
+    friend class QMeeGoPixmapData;
+    friend class QMeeGoLivePixmapData;
+};
+
+QT_END_NAMESPACE
+
+#endif // QPIXMAPDATA_GL_P_H
+
+
diff --git a/src/opengl/qpixmapdata_poolgl.cpp b/src/opengl/qpixmapdata_poolgl.cpp
new file mode 100644
index 0000000000..041210d404
--- /dev/null
+++ b/src/opengl/qpixmapdata_poolgl.cpp
@@ -0,0 +1,934 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qpixmap.h"
+#include "qglframebufferobject.h"
+
+#include <private/qpaintengine_raster_p.h>
+
+#include "qpixmapdata_gl_p.h"
+
+#include <private/qgl_p.h>
+#include <private/qdrawhelper_p.h>
+#include <private/qimage_p.h>
+#include <private/qnativeimagehandleprovider_p.h>
+#include <private/qfont_p.h>
+
+#include <private/qpaintengineex_opengl2_p.h>
+
+#include <qdesktopwidget.h>
+#include <qfile.h>
+#include <qimagereader.h>
+#include <qbuffer.h>
+
+#include "qgltexturepool_p.h"
+
+QT_BEGIN_NAMESPACE
+
+Q_OPENGL_EXPORT extern QGLWidget* qt_gl_share_widget();
+
+static inline int areaDiff(const QSize &size, const QGLFramebufferObject *fbo)
+{
+    return qAbs(size.width() * size.height() - fbo->width() * fbo->height());
+}
+
+extern int qt_next_power_of_two(int v);
+
+static inline QSize maybeRoundToNextPowerOfTwo(const QSize &sz)
+{
+#ifdef QT_OPENGL_ES_2
+    QSize rounded(qt_next_power_of_two(sz.width()), qt_next_power_of_two(sz.height()));
+    if (rounded.width() * rounded.height() < 1.20 * sz.width() * sz.height())
+        return rounded;
+#endif
+    return sz;
+}
+
+
+QGLFramebufferObject *QGLFramebufferObjectPool::acquire(const QSize &requestSize, const QGLFramebufferObjectFormat &requestFormat, bool strictSize)
+{
+    QGLFramebufferObject *chosen = 0;
+    QGLFramebufferObject *candidate = 0;
+    for (int i = 0; !chosen && i < m_fbos.size(); ++i) {
+        QGLFramebufferObject *fbo = m_fbos.at(i);
+
+        if (strictSize) {
+            if (fbo->size() == requestSize && fbo->format() == requestFormat) {
+                chosen = fbo;
+                break;
+            } else {
+                continue;
+            }
+        }
+
+        if (fbo->format() == requestFormat) {
+            // choose the fbo with a matching format and the closest size
+            if (!candidate || areaDiff(requestSize, candidate) > areaDiff(requestSize, fbo))
+                candidate = fbo;
+        }
+
+        if (candidate) {
+            m_fbos.removeOne(candidate);
+
+            const QSize fboSize = candidate->size();
+            QSize sz = fboSize;
+
+            if (sz.width() < requestSize.width())
+                sz.setWidth(qMax(requestSize.width(), qRound(sz.width() * 1.5)));
+            if (sz.height() < requestSize.height())
+                sz.setHeight(qMax(requestSize.height(), qRound(sz.height() * 1.5)));
+
+            // wasting too much space?
+            if (sz.width() * sz.height() > requestSize.width() * requestSize.height() * 4)
+                sz = requestSize;
+
+            if (sz != fboSize) {
+                delete candidate;
+                candidate = new QGLFramebufferObject(maybeRoundToNextPowerOfTwo(sz), requestFormat);
+            }
+
+            chosen = candidate;
+        }
+    }
+
+    if (!chosen) {
+        if (strictSize)
+            chosen = new QGLFramebufferObject(requestSize, requestFormat);
+        else
+            chosen = new QGLFramebufferObject(maybeRoundToNextPowerOfTwo(requestSize), requestFormat);
+    }
+
+    if (!chosen->isValid()) {
+        delete chosen;
+        chosen = 0;
+    }
+
+    return chosen;
+}
+
+void QGLFramebufferObjectPool::release(QGLFramebufferObject *fbo)
+{
+    if (fbo)
+        m_fbos << fbo;
+}
+
+
+QPaintEngine* QGLPixmapGLPaintDevice::paintEngine() const
+{
+    return data->paintEngine();
+}
+
+void QGLPixmapGLPaintDevice::beginPaint()
+{
+    if (!data->isValid())
+        return;
+
+    // QGLPaintDevice::beginPaint will store the current binding and replace
+    // it with m_thisFBO:
+    m_thisFBO = data->m_renderFbo->handle();
+    QGLPaintDevice::beginPaint();
+
+    Q_ASSERT(data->paintEngine()->type() == QPaintEngine::OpenGL2);
+
+    // QPixmap::fill() is deferred until now, where we actually need to do the fill:
+    if (data->needsFill()) {
+        const QColor &c = data->fillColor();
+        float alpha = c.alphaF();
+        glDisable(GL_SCISSOR_TEST);
+        glClearColor(c.redF() * alpha, c.greenF() * alpha, c.blueF() * alpha, alpha);
+        glClear(GL_COLOR_BUFFER_BIT);
+    }
+    else if (!data->isUninitialized()) {
+        // If the pixmap (GL Texture) has valid content (it has been
+        // uploaded from an image or rendered into before), we need to
+        // copy it from the texture to the render FBO.
+
+        glDisable(GL_DEPTH_TEST);
+        glDisable(GL_SCISSOR_TEST);
+        glDisable(GL_BLEND);
+
+#if !defined(QT_OPENGL_ES_2)
+        glMatrixMode(GL_MODELVIEW);
+        glLoadIdentity();
+
+        glMatrixMode(GL_PROJECTION);
+        glLoadIdentity();
+        glOrtho(0, data->width(), data->height(), 0, -999999, 999999);
+#endif
+
+        glViewport(0, 0, data->width(), data->height());
+
+        // Pass false to bind so it doesn't copy the FBO into the texture!
+        context()->drawTexture(QRect(0, 0, data->width(), data->height()), data->bind(false));
+    }
+}
+
+void QGLPixmapGLPaintDevice::endPaint()
+{
+    if (!data->isValid())
+        return;
+
+    data->copyBackFromRenderFbo(false);
+
+    // Base's endPaint will restore the previous FBO binding
+    QGLPaintDevice::endPaint();
+
+    qgl_fbo_pool()->release(data->m_renderFbo);
+    data->m_renderFbo = 0;
+}
+
+QGLContext* QGLPixmapGLPaintDevice::context() const
+{
+    data->ensureCreated();
+    return data->m_ctx;
+}
+
+QSize QGLPixmapGLPaintDevice::size() const
+{
+    return data->size();
+}
+
+bool QGLPixmapGLPaintDevice::alphaRequested() const
+{
+    return data->m_hasAlpha;
+}
+
+void QGLPixmapGLPaintDevice::setPixmapData(QGLPixmapData* d)
+{
+    data = d;
+}
+
+int qt_gl_pixmap_serial = 0;
+
+QGLPixmapData::QGLPixmapData(PixelType type)
+    : QPixmapData(type, OpenGLClass)
+    , m_renderFbo(0)
+    , m_engine(0)
+    , m_ctx(0)
+    , nativeImageHandleProvider(0)
+    , nativeImageHandle(0)
+    , m_dirty(false)
+    , m_hasFillColor(false)
+    , m_hasAlpha(false)
+    , inLRU(false)
+    , failedToAlloc(false)
+    , inTexturePool(false)
+{
+    setSerialNumber(++qt_gl_pixmap_serial);
+    m_glDevice.setPixmapData(this);
+
+    qt_gl_register_pixmap(this);
+}
+
+QGLPixmapData::~QGLPixmapData()
+{
+    delete m_engine;
+
+    destroyTexture();
+    qt_gl_unregister_pixmap(this);
+}
+
+void QGLPixmapData::destroyTexture()
+{
+    if (inTexturePool) {
+        QGLTexturePool *pool = QGLTexturePool::instance();
+        if (m_texture.id)
+            pool->releaseTexture(this, m_texture.id);
+    } else {
+        if (m_texture.id) {
+            QGLWidget *shareWidget = qt_gl_share_widget();
+            if (shareWidget) {
+                QGLShareContextScope ctx(shareWidget->context());
+                glDeleteTextures(1, &m_texture.id);
+            }
+        }
+    }
+    m_texture.id = 0;
+    inTexturePool = false;
+
+    releaseNativeImageHandle();
+}
+
+QPixmapData *QGLPixmapData::createCompatiblePixmapData() const
+{
+    return new QGLPixmapData(pixelType());
+}
+
+bool QGLPixmapData::isValid() const
+{
+    return w > 0 && h > 0;
+}
+
+bool QGLPixmapData::isValidContext(const QGLContext *ctx) const
+{
+    if (ctx == m_ctx)
+        return true;
+
+    const QGLContext *share_ctx = qt_gl_share_widget()->context();
+    return ctx == share_ctx || QGLContext::areSharing(ctx, share_ctx);
+}
+
+void QGLPixmapData::resize(int width, int height)
+{
+    if (width == w && height == h)
+        return;
+
+    if (width <= 0 || height <= 0) {
+        width = 0;
+        height = 0;
+    }
+
+    w = width;
+    h = height;
+    is_null = (w <= 0 || h <= 0);
+    d = pixelType() == QPixmapData::PixmapType ? 32 : 1;
+
+    destroyTexture();
+
+    m_source = QVolatileImage();
+    m_dirty = isValid();
+    setSerialNumber(++qt_gl_pixmap_serial);
+}
+
+void QGLPixmapData::ensureCreated() const
+{
+    if (!m_dirty)
+        return;
+
+    m_dirty = false;
+
+    if (nativeImageHandleProvider && !nativeImageHandle)
+        const_cast<QGLPixmapData *>(this)->createFromNativeImageHandleProvider();
+
+    QGLShareContextScope ctx(qt_gl_share_widget()->context());
+    m_ctx = ctx;
+
+    const GLenum internal_format = m_hasAlpha ? GL_RGBA : GL_RGB;
+#ifdef QT_OPENGL_ES_2
+    const GLenum external_format = internal_format;
+#else
+    const GLenum external_format = qt_gl_preferredTextureFormat();
+#endif
+    const GLenum target = GL_TEXTURE_2D;
+
+    GLenum type = GL_UNSIGNED_BYTE;
+    // Avoid conversion when pixmap is created from CFbsBitmap of EColor64K.
+    if (!m_source.isNull() && m_source.format() == QImage::Format_RGB16)
+        type = GL_UNSIGNED_SHORT_5_6_5;
+
+    m_texture.options &= ~QGLContext::MemoryManagedBindOption;
+
+    if (!m_texture.id) {
+        m_texture.id = QGLTexturePool::instance()->createTextureForPixmap(
+                                                                target,
+                                                                0, internal_format,
+                                                                w, h,
+                                                                external_format,
+                                                                type,
+                                                                const_cast<QGLPixmapData*>(this));
+        if (!m_texture.id) {
+            failedToAlloc = true;
+            return;
+        }
+        glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+        glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+
+        inTexturePool = true;
+    } else if (inTexturePool) {
+        glBindTexture(target, m_texture.id);
+        QGLTexturePool::instance()->useTexture(const_cast<QGLPixmapData*>(this));
+    }
+
+    if (!m_source.isNull() && m_texture.id) {
+        if (external_format == GL_RGB) {
+            m_source.beginDataAccess();
+            QImage tx;
+            if (type == GL_UNSIGNED_BYTE)
+                tx = m_source.imageRef().convertToFormat(QImage::Format_RGB888).mirrored(false, true);
+            else if (type == GL_UNSIGNED_SHORT_5_6_5)
+                tx = m_source.imageRef().mirrored(false, true);
+            m_source.endDataAccess(true);
+
+            glBindTexture(target, m_texture.id);
+            if (!tx.isNull())
+                glTexSubImage2D(target, 0, 0, 0, w, h, external_format,
+                                type, tx.constBits());
+            else
+                qWarning("QGLPixmapData: Failed to create GL_RGB image of size %dx%d", w, h);
+        } else {
+            // do byte swizzling ARGB -> RGBA
+            m_source.beginDataAccess();
+            const QImage tx = ctx->d_func()->convertToGLFormat(m_source.imageRef(), true, external_format);
+            m_source.endDataAccess(true);
+            glBindTexture(target, m_texture.id);
+            if (!tx.isNull())
+                glTexSubImage2D(target, 0, 0, 0, w, h, external_format,
+                                type, tx.constBits());
+            else
+                qWarning("QGLPixmapData: Failed to create GL_RGBA image of size %dx%d", w, h);
+        }
+
+        if (useFramebufferObjects())
+            m_source = QVolatileImage();
+    }
+}
+
+
+void QGLPixmapData::fromImage(const QImage &image,
+                              Qt::ImageConversionFlags flags)
+{
+    QImage img = image;
+    createPixmapForImage(img, flags, false);
+}
+
+void QGLPixmapData::fromImageReader(QImageReader *imageReader,
+                                 Qt::ImageConversionFlags flags)
+{
+    QImage image = imageReader->read();
+    if (image.isNull())
+        return;
+
+    createPixmapForImage(image, flags, true);
+}
+
+bool QGLPixmapData::fromFile(const QString &filename, const char *format,
+                             Qt::ImageConversionFlags flags)
+{
+    if (pixelType() == QPixmapData::BitmapType)
+        return QPixmapData::fromFile(filename, format, flags);
+    QFile file(filename);
+    if (file.open(QIODevice::ReadOnly)) {
+        QByteArray data = file.peek(64);
+        bool alpha;
+        if (m_texture.canBindCompressedTexture
+                (data.constData(), data.size(), format, &alpha)) {
+            resize(0, 0);
+            data = file.readAll();
+            file.close();
+            QGLShareContextScope ctx(qt_gl_share_widget()->context());
+            QSize size = m_texture.bindCompressedTexture
+                (data.constData(), data.size(), format);
+            if (!size.isEmpty()) {
+                w = size.width();
+                h = size.height();
+                is_null = false;
+                d = 32;
+                m_hasAlpha = alpha;
+                m_source = QVolatileImage();
+                m_dirty = isValid();
+                return true;
+            }
+            return false;
+        }
+    }
+
+    QImage image = QImageReader(filename, format).read();
+    if (image.isNull())
+        return false;
+
+    createPixmapForImage(image, flags, true);
+
+    return !isNull();
+}
+
+bool QGLPixmapData::fromData(const uchar *buffer, uint len, const char *format,
+                             Qt::ImageConversionFlags flags)
+{
+    bool alpha;
+    const char *buf = reinterpret_cast<const char *>(buffer);
+    if (m_texture.canBindCompressedTexture(buf, int(len), format, &alpha)) {
+        resize(0, 0);
+        QGLShareContextScope ctx(qt_gl_share_widget()->context());
+        QSize size = m_texture.bindCompressedTexture(buf, int(len), format);
+        if (!size.isEmpty()) {
+            w = size.width();
+            h = size.height();
+            is_null = false;
+            d = 32;
+            m_hasAlpha = alpha;
+            m_source = QVolatileImage();
+            m_dirty = isValid();
+            return true;
+        }
+    }
+
+    QByteArray a = QByteArray::fromRawData(reinterpret_cast<const char *>(buffer), len);
+    QBuffer b(&a);
+    b.open(QIODevice::ReadOnly);
+    QImage image = QImageReader(&b, format).read();
+    if (image.isNull())
+        return false;
+
+    createPixmapForImage(image, flags, true);
+
+    return !isNull();
+}
+
+QImage::Format QGLPixmapData::idealFormat(QImage &image, Qt::ImageConversionFlags flags)
+{
+    QImage::Format format = QImage::Format_RGB32;
+    if (qApp->desktop()->depth() == 16)
+        format = QImage::Format_RGB16;
+
+    if (image.hasAlphaChannel()
+        && ((flags & Qt::NoOpaqueDetection)
+            || const_cast<QImage &>(image).data_ptr()->checkForAlphaPixels()))
+        format = QImage::Format_ARGB32_Premultiplied;
+
+    return format;
+}
+
+void QGLPixmapData::createPixmapForImage(QImage &image, Qt::ImageConversionFlags flags, bool inPlace)
+{
+    if (image.size() == QSize(w, h))
+        setSerialNumber(++qt_gl_pixmap_serial);
+
+    resize(image.width(), image.height());
+
+    if (pixelType() == BitmapType) {
+        QImage convertedImage = image.convertToFormat(QImage::Format_MonoLSB);
+        if (image.format() == QImage::Format_MonoLSB)
+            convertedImage.detach();
+
+        m_source = QVolatileImage(convertedImage);
+
+    } else {
+        QImage::Format format = idealFormat(image, flags);
+
+        if (inPlace && image.data_ptr()->convertInPlace(format, flags)) {
+            m_source = QVolatileImage(image);
+        } else {
+            QImage convertedImage = image.convertToFormat(format);
+
+            // convertToFormat won't detach the image if format stays the same.
+            if (image.format() == format)
+                convertedImage.detach();
+
+            m_source = QVolatileImage(convertedImage);
+        }
+    }
+
+    m_dirty = true;
+    m_hasFillColor = false;
+
+    m_hasAlpha = m_source.hasAlphaChannel();
+    w = image.width();
+    h = image.height();
+    is_null = (w <= 0 || h <= 0);
+    d = m_source.depth();
+
+    destroyTexture();
+}
+
+bool QGLPixmapData::scroll(int dx, int dy, const QRect &rect)
+{
+    Q_UNUSED(dx);
+    Q_UNUSED(dy);
+    Q_UNUSED(rect);
+    return false;
+}
+
+void QGLPixmapData::copy(const QPixmapData *data, const QRect &rect)
+{
+    if (data->classId() != QPixmapData::OpenGLClass || !static_cast<const QGLPixmapData *>(data)->useFramebufferObjects()) {
+        QPixmapData::copy(data, rect);
+        return;
+    }
+
+    const QGLPixmapData *other = static_cast<const QGLPixmapData *>(data);
+    if (other->m_renderFbo) {
+        QGLShareContextScope ctx(qt_gl_share_widget()->context());
+
+        resize(rect.width(), rect.height());
+        m_hasAlpha = other->m_hasAlpha;
+        ensureCreated();
+
+        if (!ctx->d_ptr->fbo)
+            glGenFramebuffers(1, &ctx->d_ptr->fbo);
+
+        glBindFramebuffer(GL_DRAW_FRAMEBUFFER_EXT, ctx->d_ptr->fbo);
+        glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
+                GL_TEXTURE_2D, m_texture.id, 0);
+
+        if (!other->m_renderFbo->isBound())
+            glBindFramebuffer(GL_READ_FRAMEBUFFER_EXT, other->m_renderFbo->handle());
+
+        glDisable(GL_SCISSOR_TEST);
+        if (ctx->d_ptr->active_engine && ctx->d_ptr->active_engine->type() == QPaintEngine::OpenGL2)
+            static_cast<QGL2PaintEngineEx *>(ctx->d_ptr->active_engine)->invalidateState();
+
+        glBlitFramebufferEXT(rect.x(), rect.y(), rect.x() + rect.width(), rect.y() + rect.height(),
+                0, 0, w, h,
+                GL_COLOR_BUFFER_BIT,
+                GL_NEAREST);
+
+        glBindFramebuffer(GL_FRAMEBUFFER_EXT, ctx->d_ptr->current_fbo);
+    } else {
+        QPixmapData::copy(data, rect);
+    }
+}
+
+void QGLPixmapData::fill(const QColor &color)
+{
+    if (!isValid())
+        return;
+
+    bool hasAlpha = color.alpha() != 255;
+    if (hasAlpha && !m_hasAlpha) {
+        if (m_texture.id) {
+            destroyTexture();
+            m_dirty = true;
+        }
+        m_hasAlpha = color.alpha() != 255;
+    }
+
+    if (useFramebufferObjects()) {
+        m_source = QVolatileImage();
+        m_hasFillColor = true;
+        m_fillColor = color;
+    } else {
+        forceToImage();
+
+        if (m_source.depth() == 32) {
+            m_source.fill(PREMUL(color.rgba()));
+
+        } else if (m_source.depth() == 1) {
+            if (color == Qt::color1)
+                m_source.fill(1);
+            else
+                m_source.fill(0);
+        }
+    }
+}
+
+bool QGLPixmapData::hasAlphaChannel() const
+{
+    return m_hasAlpha;
+}
+
+QImage QGLPixmapData::fillImage(const QColor &color) const
+{
+    QImage img;
+    if (pixelType() == BitmapType) {
+        img = QImage(w, h, QImage::Format_MonoLSB);
+
+        img.setColorCount(2);
+        img.setColor(0, QColor(Qt::color0).rgba());
+        img.setColor(1, QColor(Qt::color1).rgba());
+
+        if (color == Qt::color1)
+            img.fill(1);
+        else
+            img.fill(0);
+    } else {
+        img = QImage(w, h,
+                m_hasAlpha
+                ? QImage::Format_ARGB32_Premultiplied
+                : QImage::Format_RGB32);
+        img.fill(PREMUL(color.rgba()));
+    }
+    return img;
+}
+
+extern QImage qt_gl_read_texture(const QSize &size, bool alpha_format, bool include_alpha);
+
+QImage QGLPixmapData::toImage() const
+{
+    if (!isValid())
+        return QImage();
+
+    if (m_renderFbo) {
+        copyBackFromRenderFbo(true);
+    } else if (!m_source.isNull()) {
+        // QVolatileImage::toImage() will make a copy always so no check
+        // for active painting is needed.
+        QImage img = m_source.toImage();
+        if (img.format() == QImage::Format_MonoLSB) {
+            img.setColorCount(2);
+            img.setColor(0, QColor(Qt::color0).rgba());
+            img.setColor(1, QColor(Qt::color1).rgba());
+        }
+        return img;
+    } else if (m_dirty || m_hasFillColor) {
+        return fillImage(m_fillColor);
+    } else {
+        ensureCreated();
+    }
+
+    QGLShareContextScope ctx(qt_gl_share_widget()->context());
+    glBindTexture(GL_TEXTURE_2D, m_texture.id);
+    return qt_gl_read_texture(QSize(w, h), true, true);
+}
+
+struct TextureBuffer
+{
+    QGLFramebufferObject *fbo;
+    QGL2PaintEngineEx *engine;
+};
+
+Q_GLOBAL_STATIC(QGLFramebufferObjectPool, _qgl_fbo_pool)
+QGLFramebufferObjectPool* qgl_fbo_pool()
+{
+    return _qgl_fbo_pool();
+}
+
+void QGLPixmapData::copyBackFromRenderFbo(bool keepCurrentFboBound) const
+{
+    if (!isValid())
+        return;
+
+    m_hasFillColor = false;
+
+    const QGLContext *share_ctx = qt_gl_share_widget()->context();
+    QGLShareContextScope ctx(share_ctx);
+
+    ensureCreated();
+
+    if (!ctx->d_ptr->fbo)
+        glGenFramebuffers(1, &ctx->d_ptr->fbo);
+
+    glBindFramebuffer(GL_DRAW_FRAMEBUFFER_EXT, ctx->d_ptr->fbo);
+    glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
+        GL_TEXTURE_2D, m_texture.id, 0);
+
+    const int x0 = 0;
+    const int x1 = w;
+    const int y0 = 0;
+    const int y1 = h;
+
+    if (!m_renderFbo->isBound())
+        glBindFramebuffer(GL_READ_FRAMEBUFFER_EXT, m_renderFbo->handle());
+
+    glDisable(GL_SCISSOR_TEST);
+
+    glBlitFramebufferEXT(x0, y0, x1, y1,
+            x0, y0, x1, y1,
+            GL_COLOR_BUFFER_BIT,
+            GL_NEAREST);
+
+    if (keepCurrentFboBound) {
+        glBindFramebuffer(GL_FRAMEBUFFER_EXT, ctx->d_ptr->current_fbo);
+    } else {
+        glBindFramebuffer(GL_DRAW_FRAMEBUFFER_EXT, m_renderFbo->handle());
+        ctx->d_ptr->current_fbo = m_renderFbo->handle();
+    }
+}
+
+bool QGLPixmapData::useFramebufferObjects() const
+{
+#ifdef Q_OS_SYMBIAN
+    // We don't want to use FBOs on Symbian
+    return false;
+#else
+    return QGLFramebufferObject::hasOpenGLFramebufferObjects()
+           && QGLFramebufferObject::hasOpenGLFramebufferBlit()
+           && qt_gl_preferGL2Engine()
+           && (w * h > 32*32); // avoid overhead of FBOs for small pixmaps
+#endif
+}
+
+QPaintEngine* QGLPixmapData::paintEngine() const
+{
+    if (!isValid())
+        return 0;
+
+    if (m_renderFbo)
+        return m_engine;
+
+    if (useFramebufferObjects()) {
+        extern QGLWidget* qt_gl_share_widget();
+
+        if (!QGLContext::currentContext())
+            qt_gl_share_widget()->makeCurrent();
+        QGLShareContextScope ctx(qt_gl_share_widget()->context());
+
+        QGLFramebufferObjectFormat format;
+        format.setAttachment(QGLFramebufferObject::CombinedDepthStencil);
+        format.setSamples(4);
+        format.setInternalTextureFormat(GLenum(m_hasAlpha ? GL_RGBA : GL_RGB));
+
+        m_renderFbo = qgl_fbo_pool()->acquire(size(), format);
+
+        if (m_renderFbo) {
+            if (!m_engine)
+                m_engine = new QGL2PaintEngineEx;
+            return m_engine;
+        }
+
+        qWarning() << "Failed to create pixmap texture buffer of size " << size() << ", falling back to raster paint engine";
+    }
+
+    // If the application wants to paint into the QPixmap, we first
+    // force it to QImage format and then paint into that.
+    // This is simpler than juggling multiple GL contexts.
+    const_cast<QGLPixmapData *>(this)->forceToImage();
+
+    if (m_hasFillColor) {
+        m_source.fill(PREMUL(m_fillColor.rgba()));
+        m_hasFillColor = false;
+    }
+    return m_source.paintEngine();
+}
+
+extern QRgb qt_gl_convertToGLFormat(QRgb src_pixel, GLenum texture_format);
+
+// If copyBack is true, bind will copy the contents of the render
+// FBO to the texture (which is not bound to the texture, as it's
+// a multisample FBO).
+GLuint QGLPixmapData::bind(bool copyBack) const
+{
+    if (m_renderFbo && copyBack) {
+        copyBackFromRenderFbo(true);
+    } else {
+        ensureCreated();
+    }
+
+    GLuint id = m_texture.id;
+    glBindTexture(GL_TEXTURE_2D, id);
+
+    if (m_hasFillColor) {
+        if (!useFramebufferObjects()) {
+            m_source = QVolatileImage(w, h, QImage::Format_ARGB32_Premultiplied);
+            m_source.fill(PREMUL(m_fillColor.rgba()));
+        }
+
+        m_hasFillColor = false;
+
+        GLenum format = qt_gl_preferredTextureFormat();
+        QImage tx(w, h, QImage::Format_ARGB32_Premultiplied);
+        tx.fill(qt_gl_convertToGLFormat(m_fillColor.rgba(), format));
+        glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, w, h, format, GL_UNSIGNED_BYTE, tx.constBits());
+    }
+
+    return id;
+}
+
+QGLTexture* QGLPixmapData::texture() const
+{
+    return &m_texture;
+}
+
+void QGLPixmapData::detachTextureFromPool()
+{
+    if (inTexturePool) {
+        QGLTexturePool::instance()->detachTexture(this);
+        inTexturePool = false;
+    }
+}
+
+void QGLPixmapData::hibernate()
+{
+    // If the image was imported (e.g, from an SgImage under Symbian), then
+    // skip the hibernation, there is no sense in copying it back to main
+    // memory because the data is most likely shared between several processes.
+    bool skipHibernate = (m_texture.id && m_source.isNull());
+#if defined(Q_OS_SYMBIAN)
+    // However we have to proceed normally if the image was retrieved via
+    // a handle provider.
+    skipHibernate &= !nativeImageHandleProvider;
+#endif
+    if (skipHibernate)
+        return;
+
+    forceToImage();
+    destroyTexture();
+}
+
+void QGLPixmapData::reclaimTexture()
+{
+    if (!inTexturePool)
+        return;
+    forceToImage();
+    destroyTexture();
+}
+
+int QGLPixmapData::metric(QPaintDevice::PaintDeviceMetric metric) const
+{
+    if (w == 0)
+        return 0;
+
+    switch (metric) {
+    case QPaintDevice::PdmWidth:
+        return w;
+    case QPaintDevice::PdmHeight:
+        return h;
+    case QPaintDevice::PdmNumColors:
+        return 0;
+    case QPaintDevice::PdmDepth:
+        return d;
+    case QPaintDevice::PdmWidthMM:
+        return qRound(w * 25.4 / qt_defaultDpiX());
+    case QPaintDevice::PdmHeightMM:
+        return qRound(h * 25.4 / qt_defaultDpiY());
+    case QPaintDevice::PdmDpiX:
+    case QPaintDevice::PdmPhysicalDpiX:
+        return qt_defaultDpiX();
+    case QPaintDevice::PdmDpiY:
+    case QPaintDevice::PdmPhysicalDpiY:
+        return qt_defaultDpiY();
+    default:
+        qWarning("QGLPixmapData::metric(): Invalid metric");
+        return 0;
+    }
+}
+
+// Force the pixmap data to be backed by some valid data.
+void QGLPixmapData::forceToImage()
+{
+    if (!isValid())
+        return;
+
+    if (m_source.isNull()) {
+        QImage::Format format = QImage::Format_ARGB32_Premultiplied;
+        if (pixelType() == BitmapType)
+            format = QImage::Format_MonoLSB;
+        m_source = QVolatileImage(w, h, format);
+    }
+
+    m_dirty = true;
+}
+
+QGLPaintDevice *QGLPixmapData::glDevice() const
+{
+    return &m_glDevice;
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/qpixmapdata_x11gl_egl.cpp b/src/opengl/qpixmapdata_x11gl_egl.cpp
new file mode 100644
index 0000000000..6126ba46ae
--- /dev/null
+++ b/src/opengl/qpixmapdata_x11gl_egl.cpp
@@ -0,0 +1,403 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QDebug>
+
+#include <QtGui/private/qt_x11_p.h>
+#include <QtGui/private/qegl_p.h>
+#include <QtGui/private/qeglproperties_p.h>
+#include <QtGui/private/qeglcontext_p.h>
+
+#if !defined(QT_OPENGL_ES_1)
+#include <QtOpenGL/private/qpaintengineex_opengl2_p.h>
+#endif
+
+#ifndef QT_OPENGL_ES_2
+#include <QtOpenGL/private/qpaintengine_opengl_p.h>
+#endif
+
+#include <QtOpenGL/private/qgl_p.h>
+#include <QtOpenGL/private/qgl_egl_p.h>
+
+#include "qpixmapdata_x11gl_p.h"
+
+QT_BEGIN_NAMESPACE
+
+
+class QX11GLSharedContexts
+{
+public:
+    QX11GLSharedContexts()
+        : rgbContext(0)
+        , argbContext(0)
+        , sharedQGLContext(0)
+        , sharePixmap(0)
+    {
+        EGLint rgbConfigId;
+        EGLint argbConfigId;
+
+        do {
+            EGLConfig rgbConfig = QEgl::defaultConfig(QInternal::Pixmap, QEgl::OpenGL, QEgl::Renderable);
+            EGLConfig argbConfig = QEgl::defaultConfig(QInternal::Pixmap, QEgl::OpenGL,
+                                                       QEgl::Renderable | QEgl::Translucent);
+
+            eglGetConfigAttrib(QEgl::display(), rgbConfig, EGL_CONFIG_ID, &rgbConfigId);
+            eglGetConfigAttrib(QEgl::display(), argbConfig, EGL_CONFIG_ID, &argbConfigId);
+
+            rgbContext = new QEglContext;
+            rgbContext->setConfig(rgbConfig);
+            rgbContext->createContext();
+
+            if (!rgbContext->isValid())
+                break;
+
+            // If the RGB & ARGB configs are the same, use the same egl context for both:
+            if (rgbConfig == argbConfig)
+                argbContext = rgbContext;
+
+            // Otherwise, create a separate context to be used for ARGB pixmaps:
+            if (!argbContext) {
+                argbContext = new QEglContext;
+                argbContext->setConfig(argbConfig);
+                bool success = argbContext->createContext(rgbContext);
+                if (!success) {
+                    qWarning("QX11GLPixmapData - RGB & ARGB contexts aren't shared");
+                    success = argbContext->createContext();
+                    if (!success)
+                        argbContext = rgbContext; // Might work, worth a shot at least.
+                }
+            }
+
+            if (!argbContext->isValid())
+                break;
+
+            // Create the pixmap which will be used to create the egl surface for the share QGLContext
+            QX11PixmapData *rgbPixmapData = new QX11PixmapData(QPixmapData::PixmapType);
+            rgbPixmapData->resize(8, 8);
+            rgbPixmapData->fill(Qt::red);
+            sharePixmap = new QPixmap(rgbPixmapData);
+            EGLSurface sharePixmapSurface = QEgl::createSurface(sharePixmap, rgbConfig);
+            rgbPixmapData->gl_surface = (void*)sharePixmapSurface;
+
+            // Create the actual QGLContext which will be used for sharing
+            sharedQGLContext = new QGLContext(QX11GLPixmapData::glFormat());
+            sharedQGLContext->d_func()->eglContext = rgbContext;
+            sharedQGLContext->d_func()->eglSurface = sharePixmapSurface;
+            sharedQGLContext->d_func()->valid = true;
+            qt_glformat_from_eglconfig(sharedQGLContext->d_func()->glFormat, rgbConfig);
+
+
+            valid = rgbContext->makeCurrent(sharePixmapSurface);
+
+            // If the ARGB & RGB configs are different, check ARGB works too:
+            if (argbConfig != rgbConfig) {
+                QX11PixmapData *argbPixmapData = new QX11PixmapData(QPixmapData::PixmapType);
+                argbPixmapData->resize(8, 8);
+                argbPixmapData->fill(Qt::transparent); // Force ARGB
+                QPixmap argbPixmap(argbPixmapData); // destroys pixmap data when goes out of scope
+                EGLSurface argbPixmapSurface = QEgl::createSurface(&argbPixmap, argbConfig);
+                valid = argbContext->makeCurrent(argbPixmapSurface);
+                argbContext->doneCurrent();
+                eglDestroySurface(QEgl::display(), argbPixmapSurface);
+                argbPixmapData->gl_surface = 0;
+            }
+
+            if (!valid) {
+                qWarning() << "Unable to make pixmap surface current:" << QEgl::errorString();
+                break;
+            }
+
+            // The pixmap surface destruction hooks are installed by QGLTextureCache, so we
+            // must make sure this is instanciated:
+            QGLTextureCache::instance();
+        } while(0);
+
+        if (!valid)
+            cleanup();
+        else
+            qDebug("Using QX11GLPixmapData with EGL config %d for ARGB and config %d for RGB", argbConfigId, rgbConfigId);
+
+    }
+
+    ~QX11GLSharedContexts() {
+        cleanup();
+    }
+
+    void cleanup() {
+        if (sharedQGLContext) {
+            delete sharedQGLContext;
+            sharedQGLContext = 0;
+        }
+        if (argbContext && argbContext != rgbContext)
+            delete argbContext;
+        argbContext = 0;
+
+        if (rgbContext) {
+            delete rgbContext;
+            rgbContext = 0;
+        }
+
+        // Deleting the QPixmap will fire the pixmap destruction cleanup hooks which in turn
+        // will destroy the egl surface:
+        if (sharePixmap) {
+            delete sharePixmap;
+            sharePixmap = 0;
+        }
+    }
+
+    bool isValid() { return valid;}
+
+    // On 16bpp systems, RGB & ARGB pixmaps are different bit-depths and therefore need
+    // different contexts:
+    QEglContext *rgbContext;
+    QEglContext *argbContext;
+
+    // The share context wraps the rgbContext and is used as the master of the context share
+    // group. As all other contexts will have the same egl context (or a shared one if rgb != argb)
+    // all QGLContexts will actually be sharing and can be in the same context group.
+    QGLContext  *sharedQGLContext;
+private:
+    QPixmap     *sharePixmap;
+    bool         valid;
+};
+
+static void qt_cleanup_x11gl_share_contexts();
+
+Q_GLOBAL_STATIC_WITH_INITIALIZER(QX11GLSharedContexts, qt_x11gl_share_contexts,
+                                 {
+                                     qAddPostRoutine(qt_cleanup_x11gl_share_contexts);
+                                 })
+
+static void qt_cleanup_x11gl_share_contexts()
+{
+    qt_x11gl_share_contexts()->cleanup();
+}
+
+
+QX11GLSharedContexts* QX11GLPixmapData::sharedContexts()
+{
+    return qt_x11gl_share_contexts();
+}
+
+bool QX11GLPixmapData::hasX11GLPixmaps()
+{
+    static bool checkedForX11GLPixmaps = false;
+    static bool haveX11GLPixmaps = false;
+
+    if (checkedForX11GLPixmaps)
+        return haveX11GLPixmaps;
+
+    haveX11GLPixmaps = qt_x11gl_share_contexts()->isValid();
+    checkedForX11GLPixmaps = true;
+
+    return haveX11GLPixmaps;
+}
+
+QX11GLPixmapData::QX11GLPixmapData()
+    : QX11PixmapData(QPixmapData::PixmapType),
+      ctx(0)
+{
+}
+
+QX11GLPixmapData::~QX11GLPixmapData()
+{
+    if (ctx)
+        delete ctx;
+}
+
+
+void QX11GLPixmapData::fill(const QColor &color)
+{
+    if (ctx) {
+        ctx->makeCurrent();
+        glFinish();
+        eglWaitClient();
+    }
+
+    QX11PixmapData::fill(color);
+    XSync(X11->display, False);
+
+    if (ctx) {
+        ctx->makeCurrent();
+        eglWaitNative(EGL_CORE_NATIVE_ENGINE);
+    }
+}
+
+void QX11GLPixmapData::copy(const QPixmapData *data, const QRect &rect)
+{
+    if (ctx) {
+        ctx->makeCurrent();
+        glFinish();
+        eglWaitClient();
+    }
+
+    QX11PixmapData::copy(data, rect);
+    XSync(X11->display, False);
+
+    if (ctx) {
+        ctx->makeCurrent();
+        eglWaitNative(EGL_CORE_NATIVE_ENGINE);
+    }
+}
+
+bool QX11GLPixmapData::scroll(int dx, int dy, const QRect &rect)
+{
+    if (ctx) {
+        ctx->makeCurrent();
+        glFinish();
+        eglWaitClient();
+    }
+
+    bool success = QX11PixmapData::scroll(dx, dy, rect);
+    XSync(X11->display, False);
+
+    if (ctx) {
+        ctx->makeCurrent();
+        eglWaitNative(EGL_CORE_NATIVE_ENGINE);
+    }
+
+    return success;
+}
+
+#if !defined(QT_OPENGL_ES_1)
+Q_GLOBAL_STATIC(QGL2PaintEngineEx, qt_gl_pixmap_2_engine)
+#endif
+
+#ifndef QT_OPENGL_ES_2
+Q_GLOBAL_STATIC(QOpenGLPaintEngine, qt_gl_pixmap_engine)
+#endif
+
+
+QPaintEngine* QX11GLPixmapData::paintEngine() const
+{
+    // We need to create the context before beginPaint - do it here:
+    if (!ctx) {
+        ctx = new QGLContext(glFormat());
+        Q_ASSERT(ctx->d_func()->eglContext == 0);
+        ctx->d_func()->eglContext = hasAlphaChannel() ? sharedContexts()->argbContext : sharedContexts()->rgbContext;
+
+        // While we use a separate QGLContext for each pixmap, the underlying QEglContext is
+        // the same. So we must use a "fake" QGLContext and fool the texture cache into thinking
+        // each pixmap's QGLContext is sharing with this central one. The only place this is
+        // going to fail is where we the underlying EGL RGB and ARGB contexts aren't sharing.
+        ctx->d_func()->sharing = true;
+        QGLContextGroup::addShare(ctx, sharedContexts()->sharedQGLContext);
+
+        // Update the glFormat for the QGLContext:
+        qt_glformat_from_eglconfig(ctx->d_func()->glFormat, ctx->d_func()->eglContext->config());
+    }
+
+    QPaintEngine* engine;
+
+#if defined(QT_OPENGL_ES_1)
+    engine = qt_gl_pixmap_engine();
+#elif defined(QT_OPENGL_ES_2)
+    engine = qt_gl_pixmap_2_engine();
+#else
+    if (qt_gl_preferGL2Engine())
+        engine = qt_gl_pixmap_2_engine();
+    else
+        engine = qt_gl_pixmap_engine();
+#endif
+
+
+
+    // Support multiple painters on multiple pixmaps simultaniously
+    if (engine->isActive()) {
+        qWarning("Pixmap paint engine already active");
+
+#if defined(QT_OPENGL_ES_1)
+        engine = new QOpenGLPaintEngine;
+#elif defined(QT_OPENGL_ES_2)
+        engine = new QGL2PaintEngineEx;
+#else
+        if (qt_gl_preferGL2Engine())
+            engine = new QGL2PaintEngineEx;
+        else
+            engine = new QOpenGLPaintEngine;
+#endif
+
+        engine->setAutoDestruct(true);
+        return engine;
+    }
+
+    return engine;
+}
+
+void QX11GLPixmapData::beginPaint()
+{
+//    qDebug("QX11GLPixmapData::beginPaint()");
+    // TODO: Check to see if the surface is renderable
+    if ((EGLSurface)gl_surface == EGL_NO_SURFACE) {
+        QPixmap tmpPixmap(this);
+        EGLConfig cfg = ctx->d_func()->eglContext->config();
+        Q_ASSERT(cfg != QEGL_NO_CONFIG);
+
+//        qDebug("QX11GLPixmapData - using EGL Config ID %d", ctx->d_func()->eglContext->configAttrib(EGL_CONFIG_ID));
+        EGLSurface surface = QEgl::createSurface(&tmpPixmap, cfg);
+        if (surface == EGL_NO_SURFACE) {
+            qWarning() << "Error creating EGL surface for pixmap:" << QEgl::errorString();
+            return;
+        }
+        gl_surface = (void*)surface;
+        ctx->d_func()->eglSurface = surface;
+        ctx->d_func()->valid = true;
+    }
+    QGLPaintDevice::beginPaint();
+}
+
+QGLContext* QX11GLPixmapData::context() const
+{
+    return ctx;
+}
+
+QSize QX11GLPixmapData::size() const
+{
+    return QSize(w, h);
+}
+
+
+QGLFormat QX11GLPixmapData::glFormat()
+{
+    return QGLFormat::defaultFormat(); //###
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/qpixmapdata_x11gl_p.h b/src/opengl/qpixmapdata_x11gl_p.h
new file mode 100644
index 0000000000..567349a2cb
--- /dev/null
+++ b/src/opengl/qpixmapdata_x11gl_p.h
@@ -0,0 +1,98 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QPIXMAPDATA_X11GL_P_H
+#define QPIXMAPDATA_X11GL_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <private/qpixmapdata_p.h>
+#include <private/qpixmap_x11_p.h>
+#include <private/qglpaintdevice_p.h>
+
+#include <qgl.h>
+
+#ifndef QT_NO_EGL
+#include <QtGui/private/qeglcontext_p.h>
+#endif
+
+QT_BEGIN_NAMESPACE
+
+class QX11GLSharedContexts;
+
+class QX11GLPixmapData : public QX11PixmapData, public QGLPaintDevice
+{
+public:
+    QX11GLPixmapData();
+    virtual ~QX11GLPixmapData();
+
+    // Re-implemented from QX11PixmapData:
+    void fill(const QColor &color);
+    void copy(const QPixmapData *data, const QRect &rect);
+    bool scroll(int dx, int dy, const QRect &rect);
+
+    // Re-implemented from QGLPaintDevice
+    QPaintEngine* paintEngine() const; // Also re-implements QX11PixmapData::paintEngine
+    void beginPaint();
+    QGLContext* context() const;
+    QSize size() const;
+
+    static bool hasX11GLPixmaps();
+    static QGLFormat glFormat();
+    static QX11GLSharedContexts* sharedContexts();
+
+private:
+    mutable QGLContext* ctx;
+};
+
+
+QT_END_NAMESPACE
+
+#endif // QPIXMAPDATA_X11GL_P_H
diff --git a/src/opengl/qwindowsurface_gl.cpp b/src/opengl/qwindowsurface_gl.cpp
new file mode 100644
index 0000000000..56e2c3b517
--- /dev/null
+++ b/src/opengl/qwindowsurface_gl.cpp
@@ -0,0 +1,1149 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui/QApplication>
+#include <QtGui/QColormap>
+#include <QtGui/QDesktopWidget>
+#include <QtGui/QPaintDevice>
+#include <QtGui/QWidget>
+
+#include <qglframebufferobject.h>
+#include <qglpixelbuffer.h>
+#include <qcolormap.h>
+#include <qdesktopwidget.h>
+#include <private/qwidget_p.h>
+#include "qdebug.h"
+
+#ifdef Q_WS_X11
+#include <private/qt_x11_p.h>
+#include <qx11info_x11.h>
+
+#ifndef QT_OPENGL_ES
+#include <GL/glx.h>
+#include <X11/Xlib.h>
+#endif
+#endif //Q_WS_X11
+
+#include <private/qglextensions_p.h>
+#include <private/qwindowsurface_gl_p.h>
+
+#include <private/qgl_p.h>
+
+#include <private/qglpixelbuffer_p.h>
+#include <private/qgraphicssystem_gl_p.h>
+
+#include <private/qpaintengineex_opengl2_p.h>
+#include <private/qpixmapdata_gl_p.h>
+
+#ifndef QT_OPENGL_ES_2
+#include <private/qpaintengine_opengl_p.h>
+#endif
+
+#ifndef GLX_ARB_multisample
+#define GLX_SAMPLE_BUFFERS_ARB  100000
+#define GLX_SAMPLES_ARB         100001
+#endif
+
+#ifndef QT_NO_EGL
+#include <private/qeglcontext_p.h>
+#endif
+
+QT_BEGIN_NAMESPACE
+
+//
+// QGLGraphicsSystem
+//
+#ifdef Q_WS_WIN
+extern Q_GUI_EXPORT bool qt_win_owndc_required;
+#endif
+QGLGraphicsSystem::QGLGraphicsSystem(bool useX11GL)
+    : QGraphicsSystem(), m_useX11GL(useX11GL)
+{
+#if defined(Q_WS_X11) && !defined(QT_OPENGL_ES)
+    // only override the system defaults if the user hasn't already
+    // picked a visual
+    if (X11->visual == 0 && X11->visual_id == -1 && X11->visual_class == -1) {
+        // find a double buffered, RGBA visual that supports OpenGL
+        // and set that as the default visual for windows in Qt
+        int i = 0;
+        int spec[16];
+        spec[i++] = GLX_RGBA;
+        spec[i++] = GLX_DOUBLEBUFFER;
+
+        if (!qgetenv("QT_GL_SWAPBUFFER_PRESERVE").isNull()) {
+            spec[i++] = GLX_DEPTH_SIZE;
+            spec[i++] = 8;
+            spec[i++] = GLX_STENCIL_SIZE;
+            spec[i++] = 8;
+            spec[i++] = GLX_SAMPLE_BUFFERS_ARB;
+            spec[i++] = 1;
+            spec[i++] = GLX_SAMPLES_ARB;
+            spec[i++] = 4;
+        }
+
+        spec[i++] = XNone;
+
+        XVisualInfo *vi = glXChooseVisual(X11->display, X11->defaultScreen, spec);
+        if (vi) {
+            X11->visual_id = vi->visualid;
+            X11->visual_class = vi->c_class;
+
+            QGLFormat format;
+            int res;
+            glXGetConfig(X11->display, vi, GLX_LEVEL, &res);
+            format.setPlane(res);
+            glXGetConfig(X11->display, vi, GLX_DOUBLEBUFFER, &res);
+            format.setDoubleBuffer(res);
+            glXGetConfig(X11->display, vi, GLX_DEPTH_SIZE, &res);
+            format.setDepth(res);
+            if (format.depth())
+                format.setDepthBufferSize(res);
+            glXGetConfig(X11->display, vi, GLX_RGBA, &res);
+            format.setRgba(res);
+            glXGetConfig(X11->display, vi, GLX_RED_SIZE, &res);
+            format.setRedBufferSize(res);
+            glXGetConfig(X11->display, vi, GLX_GREEN_SIZE, &res);
+            format.setGreenBufferSize(res);
+            glXGetConfig(X11->display, vi, GLX_BLUE_SIZE, &res);
+            format.setBlueBufferSize(res);
+            glXGetConfig(X11->display, vi, GLX_ALPHA_SIZE, &res);
+            format.setAlpha(res);
+            if (format.alpha())
+                format.setAlphaBufferSize(res);
+            glXGetConfig(X11->display, vi, GLX_ACCUM_RED_SIZE, &res);
+            format.setAccum(res);
+            if (format.accum())
+                format.setAccumBufferSize(res);
+            glXGetConfig(X11->display, vi, GLX_STENCIL_SIZE, &res);
+            format.setStencil(res);
+            if (format.stencil())
+                format.setStencilBufferSize(res);
+            glXGetConfig(X11->display, vi, GLX_STEREO, &res);
+            format.setStereo(res);
+            glXGetConfig(X11->display, vi, GLX_SAMPLE_BUFFERS_ARB, &res);
+            format.setSampleBuffers(res);
+            if (format.sampleBuffers()) {
+                glXGetConfig(X11->display, vi, GLX_SAMPLES_ARB, &res);
+                format.setSamples(res);
+            }
+
+            QGLWindowSurface::surfaceFormat = format;
+            XFree(vi);
+
+            printf("using visual class %x, id %x\n", X11->visual_class, X11->visual_id);
+        }
+    }
+#elif defined(Q_WS_WIN)
+    QGLWindowSurface::surfaceFormat.setDoubleBuffer(true);
+
+    qt_win_owndc_required = true;
+#endif
+}
+
+//
+// QGLWindowSurface
+//
+class QGLGlobalShareWidget
+{
+public:
+    QGLGlobalShareWidget() : firstPixmap(0), widgetRefCount(0), widget(0), initializing(false) {}
+
+    QGLWidget *shareWidget() {
+        if (!initializing && !widget && !cleanedUp) {
+            initializing = true;
+            widget = new QGLWidget(QGLFormat(QGL::SingleBuffer | QGL::NoDepthBuffer | QGL::NoStencilBuffer));
+            widget->resize(1, 1);
+
+            // We don't need this internal widget to appear in QApplication::topLevelWidgets()
+            if (QWidgetPrivate::allWidgets)
+                QWidgetPrivate::allWidgets->remove(widget);
+            initializing = false;
+        }
+        return widget;
+    }
+
+    // destroys the share widget and prevents recreation
+    void cleanup() {
+        QGLWidget *w = widget;
+        cleanedUp = true;
+        widget = 0;
+        delete w;
+    }
+
+    // destroys the share widget, but allows it to be recreated later on
+    void destroy() {
+        if (cleanedUp)
+            return;
+
+        QGLWidget *w = widget;
+
+        // prevent potential recursions
+        cleanedUp = true;
+        widget = 0;
+        delete w;
+        cleanedUp = false;
+    }
+
+    static bool cleanedUp;
+
+    QGLPixmapData *firstPixmap;
+    int widgetRefCount;
+
+private:
+    QGLWidget *widget;
+    bool initializing;
+};
+
+bool QGLGlobalShareWidget::cleanedUp = false;
+
+static void qt_cleanup_gl_share_widget();
+Q_GLOBAL_STATIC_WITH_INITIALIZER(QGLGlobalShareWidget, _qt_gl_share_widget,
+                                 {
+                                     qAddPostRoutine(qt_cleanup_gl_share_widget);
+                                 })
+
+static void qt_cleanup_gl_share_widget()
+{
+    _qt_gl_share_widget()->cleanup();
+}
+
+QGLWidget* qt_gl_share_widget()
+{
+    if (QGLGlobalShareWidget::cleanedUp)
+        return 0;
+    return _qt_gl_share_widget()->shareWidget();
+}
+
+void qt_destroy_gl_share_widget()
+{
+    _qt_gl_share_widget()->destroy();
+}
+
+const QGLContext *qt_gl_share_context()
+{
+    QGLWidget *widget = qt_gl_share_widget();
+    if (widget)
+        return widget->context();
+    return 0;
+}
+
+#ifdef QGL_USE_TEXTURE_POOL
+void qt_gl_register_pixmap(QGLPixmapData *pd)
+{
+    QGLGlobalShareWidget *shared = _qt_gl_share_widget();
+    pd->next = shared->firstPixmap;
+    pd->prev = 0;
+    if (shared->firstPixmap)
+        shared->firstPixmap->prev = pd;
+    shared->firstPixmap = pd;
+}
+
+void qt_gl_unregister_pixmap(QGLPixmapData *pd)
+{
+    if (pd->next)
+        pd->next->prev = pd->prev;
+    if (pd->prev) {
+        pd->prev->next = pd->next;
+    } else {
+        QGLGlobalShareWidget *shared = _qt_gl_share_widget();
+        if (shared)
+           shared->firstPixmap = pd->next;
+    }
+}
+
+void qt_gl_hibernate_pixmaps()
+{
+    QGLGlobalShareWidget *shared = _qt_gl_share_widget();
+
+    // Scan all QGLPixmapData objects in the system and hibernate them.
+    QGLPixmapData *pd = shared->firstPixmap;
+    while (pd != 0) {
+        pd->hibernate();
+        pd = pd->next;
+    }
+}
+#endif
+
+struct QGLWindowSurfacePrivate
+{
+    QGLFramebufferObject *fbo;
+    QGLPixelBuffer *pb;
+    GLuint tex_id;
+    GLuint pb_tex_id;
+
+    int tried_fbo : 1;
+    int tried_pb : 1;
+    int destructive_swap_buffers : 1;
+    int geometry_updated : 1;
+    int did_paint : 1;
+
+    QGLContext *ctx;
+
+    QList<QGLContext **> contexts;
+
+    QRegion paintedRegion;
+    QSize size;
+
+    QSize textureSize;
+
+    QList<QImage> buffers;
+    QGLWindowSurfaceGLPaintDevice glDevice;
+    QGLWindowSurface* q_ptr;
+
+    bool swap_region_support;
+};
+
+QGLFormat QGLWindowSurface::surfaceFormat;
+QGLWindowSurface::SwapMode QGLWindowSurface::swapBehavior = QGLWindowSurface::AutomaticSwap;
+
+void QGLWindowSurfaceGLPaintDevice::endPaint()
+{
+    glFlush();
+    QGLPaintDevice::endPaint();
+}
+
+QSize QGLWindowSurfaceGLPaintDevice::size() const
+{
+    return d->size;
+}
+
+QGLContext* QGLWindowSurfaceGLPaintDevice::context() const
+{
+    return d->ctx;
+}
+
+
+int QGLWindowSurfaceGLPaintDevice::metric(PaintDeviceMetric m) const
+{
+    return qt_paint_device_metric(d->q_ptr->window(), m);
+}
+
+QPaintEngine *QGLWindowSurfaceGLPaintDevice::paintEngine() const
+{
+    return qt_qgl_paint_engine();
+}
+
+QGLWindowSurface::QGLWindowSurface(QWidget *window)
+    : QWindowSurface(window), d_ptr(new QGLWindowSurfacePrivate)
+{
+//    Q_ASSERT(window->isTopLevel());
+    d_ptr->pb = 0;
+    d_ptr->fbo = 0;
+    d_ptr->ctx = 0;
+    d_ptr->tex_id = 0;
+#if defined (QT_OPENGL_ES_2)
+    d_ptr->tried_fbo = true;
+    d_ptr->tried_pb = true;
+#else
+    d_ptr->tried_fbo = false;
+    d_ptr->tried_pb = false;
+#endif
+    d_ptr->destructive_swap_buffers = qgetenv("QT_GL_SWAPBUFFER_PRESERVE").isNull();
+    d_ptr->glDevice.d = d_ptr;
+    d_ptr->q_ptr = this;
+    d_ptr->geometry_updated = false;
+    d_ptr->did_paint = false;
+    d_ptr->swap_region_support = false;
+}
+
+QGLWindowSurface::~QGLWindowSurface()
+{
+    if (d_ptr->ctx)
+        glDeleteTextures(1, &d_ptr->tex_id);
+#ifndef Q_WS_QPA // Dont delete the contexts. Destroying the window does that for us
+    foreach(QGLContext **ctx, d_ptr->contexts) {
+        delete *ctx;
+        *ctx = 0;
+    }
+#endif
+    delete d_ptr->pb;
+    delete d_ptr->fbo;
+    delete d_ptr;
+
+    if (QGLGlobalShareWidget::cleanedUp)
+        return;
+
+    --(_qt_gl_share_widget()->widgetRefCount);
+
+#ifdef QGL_USE_TEXTURE_POOL
+    if (_qt_gl_share_widget()->widgetRefCount <= 0) {
+        // All of the widget window surfaces have been destroyed
+        // but we still have GL pixmaps active.  Ask them to hibernate
+        // to free up GPU resources until a widget is shown again.
+        // This may eventually cause the EGLContext to be destroyed
+        // because nothing in the system needs a context, which will
+        // free up even more GPU resources.
+        qt_gl_hibernate_pixmaps();
+
+        // Destroy the context if necessary.
+        if (!qt_gl_share_widget()->context()->isSharing())
+            qt_destroy_gl_share_widget();
+    }
+#endif // QGL_USE_TEXTURE_POOL
+}
+
+void QGLWindowSurface::deleted(QObject *object)
+{
+    QWidget *widget = qobject_cast<QWidget *>(object);
+    if (widget) {
+        if (widget == window()) {
+            // Make sure that the fbo is destroyed before destroying its context.
+            delete d_ptr->fbo;
+            d_ptr->fbo = 0;
+        }
+
+#ifndef Q_WS_QPA //no need to specifically delete the QGLContext as it will be deleted by QWidget
+        QWidgetPrivate *widgetPrivate = widget->d_func();
+        if (widgetPrivate->extraData()) {
+            union { QGLContext **ctxPtrPtr; void **voidPtrPtr; };
+            voidPtrPtr = &widgetPrivate->extraData()->glContext;
+            int index = d_ptr->contexts.indexOf(ctxPtrPtr);
+            if (index != -1) {
+                delete *ctxPtrPtr;
+                *ctxPtrPtr = 0;
+                d_ptr->contexts.removeAt(index);
+            }
+        }
+#endif
+    }
+}
+
+void QGLWindowSurface::hijackWindow(QWidget *widget)
+{
+    QWidgetPrivate *widgetPrivate = widget->d_func();
+    widgetPrivate->createExtra();
+    if (widgetPrivate->extraData()->glContext)
+        return;
+
+    QGLContext *ctx = NULL;
+
+    // For translucent top-level widgets we need alpha in the format.
+    if (widget->testAttribute(Qt::WA_TranslucentBackground)) {
+        QGLFormat modFormat(surfaceFormat);
+        modFormat.setSampleBuffers(false);
+        modFormat.setSamples(0);
+        modFormat.setAlpha(true);
+        ctx = new QGLContext(modFormat, widget);
+    } else
+        ctx = new QGLContext(surfaceFormat, widget);
+
+    ctx->create(qt_gl_share_context());
+
+    if (widget != qt_gl_share_widget())
+        ++(_qt_gl_share_widget()->widgetRefCount);
+
+#ifndef QT_NO_EGL
+    static bool checkedForNOKSwapRegion = false;
+    static bool haveNOKSwapRegion = false;
+
+    if (!checkedForNOKSwapRegion) {
+        haveNOKSwapRegion = QEgl::hasExtension("EGL_NOK_swap_region2");
+        checkedForNOKSwapRegion = true;
+
+        if (haveNOKSwapRegion)
+            qDebug() << "Found EGL_NOK_swap_region2 extension. Using partial updates.";
+    }
+
+    d_ptr->destructive_swap_buffers = true;
+    if (ctx->d_func()->eglContext->configAttrib(EGL_SURFACE_TYPE)&EGL_SWAP_BEHAVIOR_PRESERVED_BIT) {
+        EGLint swapBehavior;
+        if (eglQuerySurface(ctx->d_func()->eglContext->display(), ctx->d_func()->eglSurface
+                            , EGL_SWAP_BEHAVIOR, &swapBehavior)) {
+            d_ptr->destructive_swap_buffers = (swapBehavior != EGL_BUFFER_PRESERVED);
+        }
+    }
+
+    d_ptr->swap_region_support = haveNOKSwapRegion;
+#endif
+
+    widgetPrivate->extraData()->glContext = ctx;
+
+    union { QGLContext **ctxPtrPtr; void **voidPtrPtr; };
+
+    connect(widget, SIGNAL(destroyed(QObject*)), this, SLOT(deleted(QObject*)));
+
+    voidPtrPtr = &widgetPrivate->extraData()->glContext;
+    d_ptr->contexts << ctxPtrPtr;
+#ifndef Q_OS_SYMBIAN
+    qDebug() << "hijackWindow() context created for" << widget << d_ptr->contexts.size();
+#endif
+}
+
+QGLContext *QGLWindowSurface::context() const
+{
+    return d_ptr->ctx;
+}
+
+QPaintDevice *QGLWindowSurface::paintDevice()
+{
+    updateGeometry();
+
+    if (d_ptr->pb)
+        return d_ptr->pb;
+
+    if (d_ptr->ctx)
+        return &d_ptr->glDevice;
+
+    QGLContext *ctx = reinterpret_cast<QGLContext *>(window()->d_func()->extraData()->glContext);
+    ctx->makeCurrent();
+
+    Q_ASSERT(d_ptr->fbo);
+    return d_ptr->fbo;
+}
+
+static void drawTexture(const QRectF &rect, GLuint tex_id, const QSize &texSize, const QRectF &src = QRectF());
+
+void QGLWindowSurface::beginPaint(const QRegion &)
+{
+    d_ptr->did_paint = true;
+    updateGeometry();
+
+    if (!context())
+        return;
+
+    int clearFlags = 0;
+
+    if (context()->d_func()->workaround_needsFullClearOnEveryFrame)
+        clearFlags = GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT;
+    else if (context()->format().alpha())
+        clearFlags = GL_COLOR_BUFFER_BIT;
+
+    if (clearFlags) {
+        glClearColor(0.0, 0.0, 0.0, 0.0);
+        glClear(clearFlags);
+    }
+}
+
+void QGLWindowSurface::endPaint(const QRegion &rgn)
+{
+    if (context())
+        d_ptr->paintedRegion |= rgn;
+
+    d_ptr->buffers.clear();
+}
+
+static void blitTexture(QGLContext *ctx, GLuint texture, const QSize &viewport, const QSize &texSize, const QRect &targetRect, const QRect &sourceRect)
+{
+    glDisable(GL_DEPTH_TEST);
+    glDisable(GL_SCISSOR_TEST);
+    glDisable(GL_BLEND);
+
+    glViewport(0, 0, viewport.width(), viewport.height());
+
+    QGLShaderProgram *blitProgram =
+        QGLEngineSharedShaders::shadersForContext(ctx)->blitProgram();
+    blitProgram->bind();
+    blitProgram->setUniformValue("imageTexture", 0 /*QT_IMAGE_TEXTURE_UNIT*/);
+
+    // The shader manager's blit program does not multiply the
+    // vertices by the pmv matrix, so we need to do the effect
+    // of the orthographic projection here ourselves.
+    QRectF r;
+    qreal w = viewport.width();
+    qreal h = viewport.height();
+    r.setLeft((targetRect.left() / w) * 2.0f - 1.0f);
+    if (targetRect.right() == (viewport.width() - 1))
+        r.setRight(1.0f);
+    else
+        r.setRight((targetRect.right() / w) * 2.0f - 1.0f);
+    r.setBottom((targetRect.top() / h) * 2.0f - 1.0f);
+    if (targetRect.bottom() == (viewport.height() - 1))
+        r.setTop(1.0f);
+    else
+        r.setTop((targetRect.bottom() / w) * 2.0f - 1.0f);
+
+    drawTexture(r, texture, texSize, sourceRect);
+}
+
+
+void QGLWindowSurface::flush(QWidget *widget, const QRegion &rgn, const QPoint &offset)
+{
+    //### Find out why d_ptr->geometry_updated isn't always false.
+    // flush() should not be called when d_ptr->geometry_updated is true. It assumes that either
+    // d_ptr->fbo or d_ptr->pb is allocated and has the correct size.
+    if (d_ptr->geometry_updated)
+        return;
+
+    // did_paint is set to true in ::beginPaint. ::beginPaint means that we
+    // at least cleared the background (= painted something). In EGL API it's a
+    // mistake to call swapBuffers if nothing was painted unless
+    // EGL_BUFFER_PRESERVED is set. This check protects the flush func from
+    // being executed if it's for nothing.
+    if (!d_ptr->destructive_swap_buffers && !d_ptr->did_paint)
+        return;
+
+    QWidget *parent = widget->internalWinId() ? widget : widget->nativeParentWidget();
+    Q_ASSERT(parent);
+
+#if !defined(Q_WS_QPA)
+    if (!geometry().isValid())
+        return;
+#else
+    if (!size().isValid())
+        return;
+#endif
+
+    // Needed to support native child-widgets...
+    hijackWindow(parent);
+
+    QRect br = rgn.boundingRect().translated(offset);
+    br = br.intersected(window()->rect());
+    QPoint wOffset = qt_qwidget_data(parent)->wrect.topLeft();
+    QRect rect = br.translated(-offset - wOffset);
+
+    const GLenum target = GL_TEXTURE_2D;
+    Q_UNUSED(target);
+
+    if (QGLWindowSurface::swapBehavior == QGLWindowSurface::KillSwap)
+        return;
+
+    if (context()) {
+        context()->makeCurrent();
+
+        if (context()->format().doubleBuffer()) {
+#if !defined(QT_OPENGL_ES_2)
+            if (d_ptr->destructive_swap_buffers) {
+                glBindTexture(target, d_ptr->tex_id);
+
+                QVector<QRect> rects = d_ptr->paintedRegion.rects();
+                for (int i = 0; i < rects.size(); ++i) {
+                    QRect br = rects.at(i);
+                    if (br.isEmpty())
+                        continue;
+
+                    const uint bottom = window()->height() - (br.y() + br.height());
+                    glCopyTexSubImage2D(target, 0, br.x(), bottom, br.x(), bottom, br.width(), br.height());
+                }
+
+                glBindTexture(target, 0);
+
+                QRegion dirtyRegion = QRegion(window()->rect()) - d_ptr->paintedRegion;
+
+                if (!dirtyRegion.isEmpty()) {
+                    glMatrixMode(GL_MODELVIEW);
+                    glLoadIdentity();
+
+                    glMatrixMode(GL_PROJECTION);
+                    glLoadIdentity();
+#ifndef QT_OPENGL_ES
+                    glOrtho(0, window()->width(), window()->height(), 0, -999999, 999999);
+#else
+                    glOrthof(0, window()->width(), window()->height(), 0, -999999, 999999);
+#endif
+                    glViewport(0, 0, window()->width(), window()->height());
+
+                    QVector<QRect> rects = dirtyRegion.rects();
+                    glColor4f(1, 1, 1, 1);
+                    for (int i = 0; i < rects.size(); ++i) {
+                        QRect rect = rects.at(i);
+                        if (rect.isEmpty())
+                            continue;
+
+                        drawTexture(rect, d_ptr->tex_id, window()->size(), rect);
+                    }
+                }
+            }
+#endif
+            bool doingPartialUpdate = false;
+            if (d_ptr->swap_region_support) {
+                if (QGLWindowSurface::swapBehavior == QGLWindowSurface::AutomaticSwap)
+                    doingPartialUpdate = br.width() * br.height() < parent->geometry().width() * parent->geometry().height() * 0.2;
+                else if (QGLWindowSurface::swapBehavior == QGLWindowSurface::AlwaysPartialSwap)
+                    doingPartialUpdate = true;
+            }
+
+            QGLContext *ctx = reinterpret_cast<QGLContext *>(parent->d_func()->extraData()->glContext);
+            if (widget != window()) {
+                if (initializeOffscreenTexture(window()->size()))
+                    qWarning() << "QGLWindowSurface: Flushing to native child widget, may lead to significant performance loss";
+                glBindTexture(target, d_ptr->tex_id);
+
+                const uint bottom = window()->height() - (br.y() + br.height());
+                glCopyTexSubImage2D(target, 0, br.x(), bottom, br.x(), bottom, br.width(), br.height());
+
+                glBindTexture(target, 0);
+
+                ctx->makeCurrent();
+                if (doingPartialUpdate)
+                    blitTexture(ctx, d_ptr->tex_id, parent->size(), window()->size(), rect, br);
+                else
+                    blitTexture(ctx, d_ptr->tex_id, parent->size(), window()->size(), parent->rect(), parent->rect().translated(offset + wOffset));
+            }
+
+            if (doingPartialUpdate)
+                ctx->d_func()->swapRegion(br);
+            else
+                ctx->swapBuffers();
+
+            d_ptr->paintedRegion = QRegion();
+        } else {
+            glFlush();
+        }
+        return;
+    }
+
+    QGLContext *previous_ctx = const_cast<QGLContext *>(QGLContext::currentContext());
+    QGLContext *ctx = reinterpret_cast<QGLContext *>(parent->d_func()->extraData()->glContext);
+
+    // QPainter::end() should have unbound the fbo, otherwise something is very wrong...
+    Q_ASSERT(!d_ptr->fbo || !d_ptr->fbo->isBound());
+
+    if (ctx != previous_ctx) {
+        ctx->makeCurrent();
+    }
+
+    QSize size = widget->rect().size();
+    if (d_ptr->destructive_swap_buffers && ctx->format().doubleBuffer()) {
+        rect = parent->rect();
+        br = rect.translated(wOffset + offset);
+        size = parent->size();
+    }
+
+    glDisable(GL_SCISSOR_TEST);
+
+    if (d_ptr->fbo && (QGLExtensions::glExtensions() & QGLExtensions::FramebufferBlit)) {
+        const int h = d_ptr->fbo->height();
+
+        const int sx0 = br.left();
+        const int sx1 = br.left() + br.width();
+        const int sy0 = h - (br.top() + br.height());
+        const int sy1 = h - br.top();
+
+        const int tx0 = rect.left();
+        const int tx1 = rect.left() + rect.width();
+        const int ty0 = parent->height() - (rect.top() + rect.height());
+        const int ty1 = parent->height() - rect.top();
+
+        if (window() == parent || d_ptr->fbo->format().samples() <= 1) {
+            if (ctx->d_ptr->current_fbo != 0)
+                glBindFramebuffer(GL_DRAW_FRAMEBUFFER_EXT, 0);
+
+            glBindFramebuffer(GL_READ_FRAMEBUFFER_EXT, d_ptr->fbo->handle());
+
+            glBlitFramebufferEXT(sx0, sy0, sx1, sy1,
+                    tx0, ty0, tx1, ty1,
+                    GL_COLOR_BUFFER_BIT,
+                    GL_NEAREST);
+
+            glBindFramebuffer(GL_READ_FRAMEBUFFER_EXT, 0);
+        } else {
+            // can't do sub-region blits with multisample FBOs
+            QGLFramebufferObject *temp = qgl_fbo_pool()->acquire(d_ptr->fbo->size(), QGLFramebufferObjectFormat());
+
+            glBindFramebuffer(GL_DRAW_FRAMEBUFFER_EXT, temp->handle());
+            glBindFramebuffer(GL_READ_FRAMEBUFFER_EXT, d_ptr->fbo->handle());
+
+            glBlitFramebufferEXT(0, 0, d_ptr->fbo->width(), d_ptr->fbo->height(),
+                    0, 0, d_ptr->fbo->width(), d_ptr->fbo->height(),
+                    GL_COLOR_BUFFER_BIT,
+                    GL_NEAREST);
+
+            glBindFramebuffer(GL_READ_FRAMEBUFFER_EXT, temp->handle());
+            glBindFramebuffer(GL_DRAW_FRAMEBUFFER_EXT, 0);
+
+            glBlitFramebufferEXT(sx0, sy0, sx1, sy1,
+                    tx0, ty0, tx1, ty1,
+                    GL_COLOR_BUFFER_BIT,
+                    GL_NEAREST);
+
+            glBindFramebuffer(GL_READ_FRAMEBUFFER_EXT, 0);
+
+            qgl_fbo_pool()->release(temp);
+        }
+
+        ctx->d_ptr->current_fbo = 0;
+    }
+#if !defined(QT_OPENGL_ES_2)
+    else {
+        GLuint texture;
+    if (d_ptr->fbo) {
+        texture = d_ptr->fbo->texture();
+    } else {
+        d_ptr->pb->makeCurrent();
+        glBindTexture(target, d_ptr->pb_tex_id);
+        const uint bottom = window()->height() - (br.y() + br.height());
+        glCopyTexSubImage2D(target, 0, br.x(), bottom, br.x(), bottom, br.width(), br.height());
+        texture = d_ptr->pb_tex_id;
+        glBindTexture(target, 0);
+    }
+
+        glDisable(GL_DEPTH_TEST);
+
+        if (d_ptr->fbo) {
+            d_ptr->fbo->release();
+        } else {
+            ctx->makeCurrent();
+        }
+
+        glMatrixMode(GL_MODELVIEW);
+        glLoadIdentity();
+
+        glMatrixMode(GL_PROJECTION);
+        glLoadIdentity();
+#ifndef QT_OPENGL_ES
+        glOrtho(0, size.width(), size.height(), 0, -999999, 999999);
+#else
+        glOrthof(0, size.width(), size.height(), 0, -999999, 999999);
+#endif
+        glViewport(0, 0, size.width(), size.height());
+
+        glColor4f(1, 1, 1, 1);
+        drawTexture(rect, texture, window()->size(), br);
+
+        if (d_ptr->fbo)
+            d_ptr->fbo->bind();
+    }
+#else
+    // OpenGL/ES 2.0 version of the fbo blit.
+    else if (d_ptr->fbo) {
+        Q_UNUSED(target);
+
+        if (d_ptr->fbo->isBound())
+            d_ptr->fbo->release();
+
+        blitTexture(ctx, d_ptr->fbo->texture(), size, window()->size(), rect, br);
+    }
+#endif
+
+    if (ctx->format().doubleBuffer())
+        ctx->swapBuffers();
+    else
+        glFlush();
+
+    d_ptr->did_paint = false;
+}
+
+
+#if !defined(Q_WS_QPA)
+void QGLWindowSurface::setGeometry(const QRect &rect)
+{
+    QWindowSurface::setGeometry(rect);
+    d_ptr->geometry_updated = true;
+}
+#else
+void QGLWindowSurface::resize(const QSize &size)
+{
+    QWindowSurface::resize(size);
+    d_ptr->geometry_updated = true;
+}
+#endif
+
+void QGLWindowSurface::updateGeometry() {
+    if (!d_ptr->geometry_updated)
+        return;
+    d_ptr->geometry_updated = false;
+
+    bool hijack(true);
+    QWidgetPrivate *wd = window()->d_func();
+    if (wd->extraData() && wd->extraData()->glContext) {
+#ifdef Q_OS_SYMBIAN // Symbian needs to recreate the context when native window size changes
+        if (d_ptr->size != geometry().size()) {
+            if (window() != qt_gl_share_widget())
+                --(_qt_gl_share_widget()->widgetRefCount);
+
+            delete wd->extraData()->glContext;
+            wd->extraData()->glContext = 0;
+            d_ptr->ctx = 0;
+        }
+        else
+#endif
+        {
+            hijack = false; // we already have gl context for widget
+        }
+    }
+
+    if (hijack)
+        hijackWindow(window());
+
+    QGLContext *ctx = reinterpret_cast<QGLContext *>(wd->extraData()->glContext);
+
+#ifdef Q_WS_MAC
+    ctx->updatePaintDevice();
+#endif
+
+    QSize surfSize = geometry().size();
+
+    if (surfSize.width() <= 0 || surfSize.height() <= 0)
+        return;
+
+    if (d_ptr->size == surfSize)
+        return;
+
+    d_ptr->size = surfSize;
+
+    if (d_ptr->ctx) {
+#ifndef QT_OPENGL_ES_2
+        if (d_ptr->destructive_swap_buffers)
+            initializeOffscreenTexture(surfSize);
+#endif
+        return;
+    }
+
+    const GLenum target = GL_TEXTURE_2D;
+    if (d_ptr->destructive_swap_buffers
+        && (QGLExtensions::glExtensions() & QGLExtensions::FramebufferObject)
+        && (d_ptr->fbo || !d_ptr->tried_fbo)
+        && qt_gl_preferGL2Engine())
+    {
+        d_ptr->tried_fbo = true;
+        ctx->d_ptr->internal_context = true;
+        ctx->makeCurrent();
+        delete d_ptr->fbo;
+
+        QGLFramebufferObjectFormat format;
+        format.setAttachment(QGLFramebufferObject::CombinedDepthStencil);
+        format.setInternalTextureFormat(GLenum(GL_RGBA));
+        format.setTextureTarget(target);
+
+        if (QGLExtensions::glExtensions() & QGLExtensions::FramebufferBlit)
+            format.setSamples(8);
+
+        d_ptr->fbo = new QGLFramebufferObject(surfSize, format);
+
+        if (d_ptr->fbo->isValid()) {
+            qDebug() << "Created Window Surface FBO" << surfSize
+                     << "with samples" << d_ptr->fbo->format().samples();
+            return;
+        } else {
+            qDebug() << "QGLWindowSurface: Failed to create valid FBO, falling back";
+            delete d_ptr->fbo;
+            d_ptr->fbo = 0;
+        }
+    }
+
+#if !defined(QT_OPENGL_ES_2) && !defined(Q_WS_QPA) //QPA doesn't support pixelbuffers
+    if (d_ptr->destructive_swap_buffers && (d_ptr->pb || !d_ptr->tried_pb)) {
+        d_ptr->tried_pb = true;
+
+        if (d_ptr->pb) {
+            d_ptr->pb->makeCurrent();
+            glDeleteTextures(1, &d_ptr->pb_tex_id);
+        }
+
+        delete d_ptr->pb;
+
+        d_ptr->pb = new QGLPixelBuffer(surfSize.width(), surfSize.height(),
+                                        QGLFormat(QGL::SampleBuffers | QGL::StencilBuffer | QGL::DepthBuffer),
+                                        qt_gl_share_widget());
+
+        if (d_ptr->pb->isValid()) {
+            qDebug() << "Created Window Surface Pixelbuffer, Sample buffers:" << d_ptr->pb->format().sampleBuffers();
+            d_ptr->pb->makeCurrent();
+
+            glGenTextures(1, &d_ptr->pb_tex_id);
+            glBindTexture(target, d_ptr->pb_tex_id);
+            glTexImage2D(target, 0, GL_RGBA, surfSize.width(), surfSize.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
+
+            glTexParameterf(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+            glTexParameterf(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+            glBindTexture(target, 0);
+
+            glMatrixMode(GL_PROJECTION);
+            glLoadIdentity();
+            glOrtho(0, d_ptr->pb->width(), d_ptr->pb->height(), 0, -999999, 999999);
+
+            d_ptr->pb->d_ptr->qctx->d_func()->internal_context = true;
+            return;
+        } else {
+            qDebug() << "QGLWindowSurface: Failed to create valid pixelbuffer, falling back";
+            delete d_ptr->pb;
+            d_ptr->pb = 0;
+        }
+    }
+#endif // !defined(QT_OPENGL_ES_2) !defined(Q_WS_QPA)
+
+    ctx->makeCurrent();
+
+#ifndef QT_OPENGL_ES_2
+    if (d_ptr->destructive_swap_buffers)
+        initializeOffscreenTexture(surfSize);
+#endif
+#ifndef Q_OS_SYMBIAN
+    qDebug() << "QGLWindowSurface: Using plain widget as window surface" << this;
+#endif
+    d_ptr->ctx = ctx;
+    d_ptr->ctx->d_ptr->internal_context = true;
+}
+
+bool QGLWindowSurface::initializeOffscreenTexture(const QSize &size)
+{
+    if (size == d_ptr->textureSize)
+        return false;
+
+    glGenTextures(1, &d_ptr->tex_id);
+    glBindTexture(GL_TEXTURE_2D, d_ptr->tex_id);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, size.width(), size.height(), 0, GL_RGB, GL_UNSIGNED_BYTE, 0);
+
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+    glBindTexture(GL_TEXTURE_2D, 0);
+
+    d_ptr->textureSize = size;
+    return true;
+}
+
+bool QGLWindowSurface::scroll(const QRegion &area, int dx, int dy)
+{
+    // this code randomly fails currently for unknown reasons
+    return false;
+
+    if (!d_ptr->pb)
+        return false;
+
+    d_ptr->pb->makeCurrent();
+
+    QRect br = area.boundingRect();
+
+#if 0
+    // ## workaround driver issue (scrolling by these deltas is unbearably slow for some reason)
+    // ## maybe we should use glCopyTexSubImage insteadk
+    if (dx == 1 || dx == -1 || dy == 1 || dy == -1 || dy == 2)
+        return false;
+
+    glRasterPos2i(br.x() + dx, br.y() + br.height() + dy);
+    glCopyPixels(br.x(), d_ptr->pb->height() - (br.y() + br.height()), br.width(), br.height(), GL_COLOR);
+    return true;
+#endif
+
+    const GLenum target = GL_TEXTURE_2D;
+
+    glBindTexture(target, d_ptr->tex_id);
+    glCopyTexImage2D(target, 0, GL_RGBA, br.x(), d_ptr->pb->height() - (br.y() + br.height()), br.width(), br.height(), 0);
+    glBindTexture(target, 0);
+
+    drawTexture(br.translated(dx, dy), d_ptr->tex_id, window()->size());
+
+    return true;
+}
+
+static void drawTexture(const QRectF &rect, GLuint tex_id, const QSize &texSize, const QRectF &br)
+{
+    const GLenum target = GL_TEXTURE_2D;
+    QRectF src = br.isEmpty()
+        ? QRectF(QPointF(), texSize)
+        : QRectF(QPointF(br.x(), texSize.height() - br.bottom()), br.size());
+
+    if (target == GL_TEXTURE_2D) {
+        qreal width = texSize.width();
+        qreal height = texSize.height();
+
+        src.setLeft(src.left() / width);
+        src.setRight(src.right() / width);
+        src.setTop(src.top() / height);
+        src.setBottom(src.bottom() / height);
+    }
+
+    const GLfloat tx1 = src.left();
+    const GLfloat tx2 = src.right();
+    const GLfloat ty1 = src.top();
+    const GLfloat ty2 = src.bottom();
+
+    GLfloat texCoordArray[4*2] = {
+        tx1, ty2, tx2, ty2, tx2, ty1, tx1, ty1
+    };
+
+    GLfloat vertexArray[4*2];
+    extern void qt_add_rect_to_array(const QRectF &r, GLfloat *array); // qpaintengine_opengl.cpp
+    qt_add_rect_to_array(rect, vertexArray);
+
+#if !defined(QT_OPENGL_ES_2)
+    glVertexPointer(2, GL_FLOAT, 0, vertexArray);
+    glTexCoordPointer(2, GL_FLOAT, 0, texCoordArray);
+
+    glBindTexture(target, tex_id);
+    glEnable(target);
+
+    glEnableClientState(GL_VERTEX_ARRAY);
+    glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+    glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
+    glDisableClientState(GL_VERTEX_ARRAY);
+    glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+
+    glDisable(target);
+    glBindTexture(target, 0);
+#else
+    glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, vertexArray);
+    glVertexAttribPointer(QT_TEXTURE_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, texCoordArray);
+
+    glBindTexture(target, tex_id);
+
+    glEnableVertexAttribArray(QT_VERTEX_COORDS_ATTR);
+    glEnableVertexAttribArray(QT_TEXTURE_COORDS_ATTR);
+    glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
+    glDisableVertexAttribArray(QT_VERTEX_COORDS_ATTR);
+    glDisableVertexAttribArray(QT_TEXTURE_COORDS_ATTR);
+
+    glBindTexture(target, 0);
+#endif
+}
+
+QImage *QGLWindowSurface::buffer(const QWidget *widget)
+{
+    QImage image;
+
+    if (d_ptr->pb)
+        image = d_ptr->pb->toImage();
+    else if (d_ptr->fbo)
+        image = d_ptr->fbo->toImage();
+
+    if (image.isNull())
+        return 0;
+
+    QRect rect = widget->rect();
+    rect.translate(widget->mapTo(widget->window(), QPoint()));
+
+    QImage subImage = image.copy(rect);
+    d_ptr->buffers << subImage;
+    return &d_ptr->buffers.last();
+}
+
+QWindowSurface::WindowSurfaceFeatures QGLWindowSurface::features() const
+{
+    WindowSurfaceFeatures features = 0;
+    if (!d_ptr->destructive_swap_buffers || d_ptr->swap_region_support)
+        features |= PartialUpdates;
+    if (!d_ptr->destructive_swap_buffers)
+        features |= PreservedContents;
+    return features;
+}
+
+QT_END_NAMESPACE
+
diff --git a/src/opengl/qwindowsurface_gl_p.h b/src/opengl/qwindowsurface_gl_p.h
new file mode 100644
index 0000000000..c71ce59c4d
--- /dev/null
+++ b/src/opengl/qwindowsurface_gl_p.h
@@ -0,0 +1,129 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QWINDOWSURFACE_GL_P_H
+#define QWINDOWSURFACE_GL_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of the QLibrary class.  This header file may change from
+// version to version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <qglobal.h>
+#include <qgl.h>
+#include <private/qwindowsurface_p.h>
+#include <private/qglpaintdevice_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QPaintDevice;
+class QPoint;
+class QRegion;
+class QWidget;
+struct QGLWindowSurfacePrivate;
+
+Q_OPENGL_EXPORT QGLWidget* qt_gl_share_widget();
+Q_OPENGL_EXPORT void qt_destroy_gl_share_widget();
+
+class QGLWindowSurfaceGLPaintDevice : public QGLPaintDevice
+{
+public:
+    QPaintEngine* paintEngine() const;
+    void endPaint();
+    QSize size() const;
+    int metric(PaintDeviceMetric m) const;
+    QGLContext* context() const;
+    QGLWindowSurfacePrivate* d;
+};
+
+class Q_OPENGL_EXPORT QGLWindowSurface : public QObject, public QWindowSurface // , public QPaintDevice
+{
+    Q_OBJECT
+public:
+    QGLWindowSurface(QWidget *window);
+    ~QGLWindowSurface();
+
+    QPaintDevice *paintDevice();
+    void flush(QWidget *widget, const QRegion &region, const QPoint &offset);
+
+#if !defined(Q_WS_QPA)
+    void setGeometry(const QRect &rect);
+#else
+    virtual void resize(const QSize &size);
+#endif
+
+    void updateGeometry();
+    bool scroll(const QRegion &area, int dx, int dy);
+
+    void beginPaint(const QRegion &region);
+    void endPaint(const QRegion &region);
+
+    QImage *buffer(const QWidget *widget);
+
+    WindowSurfaceFeatures features() const;
+
+    QGLContext *context() const;
+
+    static QGLFormat surfaceFormat;
+
+    enum SwapMode { AutomaticSwap, AlwaysFullSwap, AlwaysPartialSwap, KillSwap };
+    static SwapMode swapBehavior;
+
+private slots:
+    void deleted(QObject *object);
+
+private:
+    void hijackWindow(QWidget *widget);
+    bool initializeOffscreenTexture(const QSize &size);
+
+    QGLWindowSurfacePrivate *d_ptr;
+};
+
+QT_END_NAMESPACE
+
+#endif // QWINDOWSURFACE_GL_P_H
+
diff --git a/src/opengl/qwindowsurface_x11gl.cpp b/src/opengl/qwindowsurface_x11gl.cpp
new file mode 100644
index 0000000000..78603f9d11
--- /dev/null
+++ b/src/opengl/qwindowsurface_x11gl.cpp
@@ -0,0 +1,213 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QTime>
+#include <QDebug>
+
+#include <private/qt_x11_p.h>
+#include <private/qimagepixmapcleanuphooks_p.h>
+
+#include "qwindowsurface_x11gl_p.h"
+#include "qpixmapdata_x11gl_p.h"
+
+QT_BEGIN_NAMESPACE
+
+QX11GLWindowSurface::QX11GLWindowSurface(QWidget* window)
+    : QWindowSurface(window), m_windowGC(0), m_pixmapGC(0), m_window(window)
+{
+}
+
+QX11GLWindowSurface::~QX11GLWindowSurface()
+{
+    if (m_windowGC)
+        XFree(m_windowGC);
+    if (m_pixmapGC)
+        XFree(m_pixmapGC);
+}
+
+QPaintDevice *QX11GLWindowSurface::paintDevice()
+{
+    return &m_backBuffer;
+}
+
+extern void *qt_getClipRects(const QRegion &r, int &num); // in qpaintengine_x11.cpp
+
+void QX11GLWindowSurface::flush(QWidget *widget, const QRegion &widgetRegion, const QPoint &offset)
+{
+    // We don't need to know the widget which initiated the flush. Instead we just use the offset
+    // to translate the widgetRegion:
+    Q_UNUSED(widget);
+
+    if (m_backBuffer.isNull()) {
+        qDebug("QX11GLWindowSurface::flush() - backBuffer is null, not flushing anything");
+        return;
+    }
+
+    Q_ASSERT(window()->size() != m_backBuffer.size());
+
+    // Wait for all GL rendering to the back buffer pixmap to complete before trying to
+    // copy it to the window. We do this by making sure the pixmap's context is current
+    // and then call eglWaitClient. The EGL 1.4 spec says eglWaitClient doesn't have to
+    // block, just that "All rendering calls...are guaranteed to be executed before native
+    // rendering calls". This makes it potentially less expensive than glFinish.
+    QGLContext* ctx = static_cast<QX11GLPixmapData*>(m_backBuffer.data_ptr().data())->context();
+    if (QGLContext::currentContext() != ctx && ctx && ctx->isValid())
+        ctx->makeCurrent();
+    eglWaitClient();
+
+    if (m_windowGC == 0) {
+        XGCValues attribs;
+        attribs.graphics_exposures = False;
+        m_windowGC = XCreateGC(X11->display, m_window->handle(), GCGraphicsExposures, &attribs);
+    }
+
+    int rectCount;
+    XRectangle *rects = (XRectangle *)qt_getClipRects(widgetRegion, rectCount);
+    if (rectCount <= 0)
+        return;
+
+    XSetClipRectangles(X11->display, m_windowGC, 0, 0, rects, rectCount, YXBanded);
+
+    QRect dirtyRect = widgetRegion.boundingRect().translated(-offset);
+    XCopyArea(X11->display, m_backBuffer.handle(), m_window->handle(), m_windowGC,
+              dirtyRect.x(), dirtyRect.y(), dirtyRect.width(), dirtyRect.height(),
+              dirtyRect.x(), dirtyRect.y());
+
+    // Make sure the blit of the update from the back buffer to the window completes
+    // before allowing rendering to start again to the back buffer. Otherwise the GPU
+    // might start rendering to the back buffer again while the blit takes place.
+    eglWaitNative(EGL_CORE_NATIVE_ENGINE);
+}
+
+void QX11GLWindowSurface::setGeometry(const QRect &rect)
+{
+    if (rect.width() > m_backBuffer.size().width() || rect.height() > m_backBuffer.size().height()) {
+        QX11GLPixmapData *pd = new QX11GLPixmapData;
+        QSize newSize = rect.size();
+        pd->resize(newSize.width(), newSize.height());
+        m_backBuffer = QPixmap(pd);
+        if (window()->testAttribute(Qt::WA_TranslucentBackground))
+            m_backBuffer.fill(Qt::transparent);
+        if (m_pixmapGC) {
+            XFreeGC(X11->display, m_pixmapGC);
+            m_pixmapGC = 0;
+        }
+    }
+
+    QWindowSurface::setGeometry(rect);
+}
+
+bool QX11GLWindowSurface::scroll(const QRegion &area, int dx, int dy)
+{
+    if (m_backBuffer.isNull())
+        return false;
+
+    Q_ASSERT(m_backBuffer.data_ptr()->classId() == QPixmapData::X11Class);
+
+    // Make sure all GL rendering is complete before starting the scroll operation:
+    QGLContext* ctx = static_cast<QX11GLPixmapData*>(m_backBuffer.data_ptr().data())->context();
+    if (QGLContext::currentContext() != ctx && ctx && ctx->isValid())
+        ctx->makeCurrent();
+    eglWaitClient();
+
+    if (!m_pixmapGC)
+        m_pixmapGC = XCreateGC(X11->display, m_backBuffer.handle(), 0, 0);
+
+    foreach (const QRect& rect, area.rects()) {
+        XCopyArea(X11->display, m_backBuffer.handle(), m_backBuffer.handle(), m_pixmapGC,
+                  rect.x(), rect.y(), rect.width(), rect.height(),
+                  rect.x()+dx, rect.y()+dy);
+    }
+
+    // Make sure the scroll operation is complete before allowing GL rendering to resume
+    eglWaitNative(EGL_CORE_NATIVE_ENGINE);
+
+    return true;
+}
+
+
+QPixmap QX11GLWindowSurface::grabWidget(const QWidget *widget, const QRect& rect) const
+{
+    if (!widget || m_backBuffer.isNull())
+        return QPixmap();
+
+    QRect srcRect;
+
+    // make sure the rect is inside the widget & clip to widget's rect
+    if (!rect.isEmpty())
+        srcRect = rect & widget->rect();
+    else
+        srcRect = widget->rect();
+
+    if (srcRect.isEmpty())
+        return QPixmap();
+
+    // If it's a child widget we have to translate the coordinates
+    if (widget != window())
+        srcRect.translate(widget->mapTo(window(), QPoint(0, 0)));
+
+    QPixmap::x11SetDefaultScreen(widget->x11Info().screen());
+
+    QX11PixmapData *pmd = new QX11PixmapData(QPixmapData::PixmapType);
+    pmd->resize(srcRect.width(), srcRect.height());
+    QPixmap px(pmd);
+
+    GC tmpGc = XCreateGC(X11->display, m_backBuffer.handle(), 0, 0);
+
+    // Make sure all GL rendering is complete before copying the window
+    QGLContext* ctx = static_cast<QX11GLPixmapData*>(m_backBuffer.pixmapData())->context();
+    if (QGLContext::currentContext() != ctx && ctx && ctx->isValid())
+        ctx->makeCurrent();
+    eglWaitClient();
+
+    // Copy srcRect from the backing store to the new pixmap
+    XSetGraphicsExposures(X11->display, tmpGc, False);
+    XCopyArea(X11->display, m_backBuffer.handle(), px.handle(), tmpGc,
+              srcRect.x(), srcRect.y(), srcRect.width(), srcRect.height(), 0, 0);
+    XFreeGC(X11->display, tmpGc);
+
+    // Wait until the copy has finised before allowing more rendering into the back buffer
+    eglWaitNative(EGL_CORE_NATIVE_ENGINE);
+
+    return px;
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/qwindowsurface_x11gl_p.h b/src/opengl/qwindowsurface_x11gl_p.h
new file mode 100644
index 0000000000..bb65133c94
--- /dev/null
+++ b/src/opengl/qwindowsurface_x11gl_p.h
@@ -0,0 +1,83 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QWINDOWSURFACE_X11GL_P_H
+#define QWINDOWSURFACE_X11GL_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <private/qwindowsurface_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QX11GLWindowSurface : public QWindowSurface
+{
+public:
+    QX11GLWindowSurface(QWidget* window);
+    virtual ~QX11GLWindowSurface();
+
+    // Inherreted from QWindowSurface
+    QPaintDevice *paintDevice();
+    void flush(QWidget *widget, const QRegion &region, const QPoint &offset);
+    void setGeometry(const QRect &rect);
+    bool scroll(const QRegion &area, int dx, int dy);
+    QPixmap grabWidget(const QWidget *widget, const QRect& rectangle = QRect()) const;
+
+private:
+    GC      m_windowGC;
+    GC      m_pixmapGC;
+    QPixmap m_backBuffer;
+    QWidget *m_window;
+};
+
+
+QT_END_NAMESPACE
+
+#endif // QWINDOWSURFACE_X11GL_P_H
diff --git a/src/opengl/util/README-GLSL b/src/opengl/util/README-GLSL
new file mode 100644
index 0000000000..ff20eb45b2
--- /dev/null
+++ b/src/opengl/util/README-GLSL
@@ -0,0 +1,18 @@
+Use of GLSL for vertex and fragment programs in Qt
+---------------------------------------------------
+
+We don't compile the *.glsl files because we don't want the build process of
+Qt to require cgc from nVidia to build the fragment programs.
+
+The script src/opengl/util/glsl_to_include.sh will compile a GLSL program to a file
+that can be included in a C(++) program. The file is the output from cgc
+quoted as a string.
+
+This can be done manually by:
+
+./glsl_to_include.sh radial.glsl
+./glsl_to_include.sh conical.glsl
+
+This will produce the files radial.frag and radial.glsl_quoted.
+(and also conical.frag and conical.glsl_quoted)
+These files are included by qpaintengine_opengl.cpp
diff --git a/src/opengl/util/brush_painter.glsl b/src/opengl/util/brush_painter.glsl
new file mode 100644
index 0000000000..6c4acdf924
--- /dev/null
+++ b/src/opengl/util/brush_painter.glsl
@@ -0,0 +1,7 @@
+// fast brush painter for composition modes which can be implemented with blendfuncs
+// no mask, used for fast filling of aliased primitives (or multisampled)
+
+void main()
+{
+    gl_FragColor = brush();
+}
diff --git a/src/opengl/util/brushes.conf b/src/opengl/util/brushes.conf
new file mode 100644
index 0000000000..93e2b3b295
--- /dev/null
+++ b/src/opengl/util/brushes.conf
@@ -0,0 +1,6 @@
+FRAGMENT_PROGRAM_BRUSH_SOLID solid_brush.glsl
+FRAGMENT_PROGRAM_BRUSH_RADIAL radial_brush.glsl
+FRAGMENT_PROGRAM_BRUSH_CONICAL conical_brush.glsl
+FRAGMENT_PROGRAM_BRUSH_LINEAR linear_brush.glsl
+FRAGMENT_PROGRAM_BRUSH_TEXTURE texture_brush.glsl
+FRAGMENT_PROGRAM_BRUSH_PATTERN pattern_brush.glsl
diff --git a/src/opengl/util/composition_mode_colorburn.glsl b/src/opengl/util/composition_mode_colorburn.glsl
new file mode 100644
index 0000000000..c913b9737f
--- /dev/null
+++ b/src/opengl/util/composition_mode_colorburn.glsl
@@ -0,0 +1,13 @@
+// Dca' = Sca.Da + Dca.Sa <= Sa.Da ?
+//        Sca.(1 - Da) + Dca.(1 - Sa)
+//        Sa.(Sca.Da + Dca.Sa - Sa.Da)/Sca + Sca.(1 - Da) + Dca.(1 - Sa)
+// Da'  = Sa + Da - Sa.Da 
+vec4 composite(vec4 src, vec4 dst)
+{
+    vec4 result;
+    result.rgb = mix(src.rgb * (1.0 - dst.a) + dst.rgb * (1.0 - src.a),
+                     src.a * (src.rgb * dst.a + dst.rgb * src.a - src.a * dst.a) / max(src.rgb, 0.00001) + src.rgb * (1.0 - dst.a) + dst.rgb * (1.0 - src.a),
+                     step(src.a * dst.a, src.rgb * dst.a + dst.rgb * src.a));
+    result.a = src.a + dst.a - src.a * dst.a;
+    return result;
+}
diff --git a/src/opengl/util/composition_mode_colordodge.glsl b/src/opengl/util/composition_mode_colordodge.glsl
new file mode 100644
index 0000000000..b75e83cf4e
--- /dev/null
+++ b/src/opengl/util/composition_mode_colordodge.glsl
@@ -0,0 +1,15 @@
+// Dca' = Sca.Da + Dca.Sa <= Sa.Da ?
+//        Dca.Sa/(1 - Sca/Sa) + Sca.(1 - Da) + Dca.(1 - Sa) :
+//        Sa.Da + Sca.(1 - Da) + Dca.(1 - Sa)
+// Da'  = Sa + Da - Sa.Da 
+vec4 composite(vec4 src, vec4 dst)
+{
+    vec4 result;
+    vec3 temp = src.rgb * (1.0 - dst.a) + dst.rgb * (1.0 - src.a);
+    result.rgb = mix(dst.rgb * src.a / max(1.0 - src.rgb / max(src.a, 0.000001), 0.000001) + temp,
+                     src.a * dst.a + temp,
+                     step(src.a * dst.a, src.rgb * dst.a + dst.rgb * src.a));
+
+    result.a = src.a + dst.a - src.a * dst.a;
+    return result;
+}
diff --git a/src/opengl/util/composition_mode_darken.glsl b/src/opengl/util/composition_mode_darken.glsl
new file mode 100644
index 0000000000..8bbb82b3ce
--- /dev/null
+++ b/src/opengl/util/composition_mode_darken.glsl
@@ -0,0 +1,9 @@
+// Dca' = min(Sca.Da, Dca.Sa) + Sca.(1 - Da) + Dca.(1 - Sa)
+// Da'  = Sa + Da - Sa.Da 
+vec4 composite(vec4 src, vec4 dst)
+{
+    vec4 result;
+    result.rgb = min(src.rgb * dst.a, dst.rgb * src.a) + src.rgb * (1.0 - dst.a) + dst.rgb * (1.0 - src.a);
+    result.a = src.a + dst.a - src.a * dst.a;
+    return result;
+}
diff --git a/src/opengl/util/composition_mode_difference.glsl b/src/opengl/util/composition_mode_difference.glsl
new file mode 100644
index 0000000000..3c46ec71f2
--- /dev/null
+++ b/src/opengl/util/composition_mode_difference.glsl
@@ -0,0 +1,9 @@
+// Dca' = Sca + Dca - 2.min(Sca.Da, Dca.Sa)
+// Da'  = Sa + Da - Sa.Da
+vec4 composite(vec4 src, vec4 dst)
+{
+    vec4 result;
+    result.rgb = src.rgb + dst.rgb - 2.0 * min(src.rgb * dst.a, dst.rgb * src.a);
+    result.a = src.a + dst.a - src.a * dst.a;
+    return result;
+}
diff --git a/src/opengl/util/composition_mode_exclusion.glsl b/src/opengl/util/composition_mode_exclusion.glsl
new file mode 100644
index 0000000000..59c2da99ea
--- /dev/null
+++ b/src/opengl/util/composition_mode_exclusion.glsl
@@ -0,0 +1,9 @@
+// Dca' = (Sca.Da + Dca.Sa - 2.Sca.Dca) + Sca.(1 - Da) + Dca.(1 - Sa)
+// Da'  = Sa + Da - Sa.Da
+vec4 composite(vec4 src, vec4 dst)
+{
+    vec4 result;
+    result.rgb = (src.rgb * dst.a + dst.rgb * src.a - 2.0 * src.rgb * dst.rgb) + src.rgb * (1.0 - dst.a) + dst.rgb * (1.0 - src.a);
+    result.a = src.a + dst.a - src.a * dst.a;
+    return result;
+}
diff --git a/src/opengl/util/composition_mode_hardlight.glsl b/src/opengl/util/composition_mode_hardlight.glsl
new file mode 100644
index 0000000000..4ea355029d
--- /dev/null
+++ b/src/opengl/util/composition_mode_hardlight.glsl
@@ -0,0 +1,14 @@
+// Dca' = 2.Sca < Sa ?
+//        2.Sca.Dca + Sca.(1 - Da) + Dca.(1 - Sa) :
+//        Sa.Da - 2.(Da - Dca).(Sa - Sca) + Sca.(1 - Da) + Dca.(1 - Sa)
+// Da'  = Sa + Da - Sa.Da 
+vec4 composite(vec4 src, vec4 dst)
+{
+    vec4 result;
+    result.rgb = mix(2.0 * src.rgb * dst.rgb + src.rgb * (1.0 - dst.a) + dst.rgb * (1.0 - src.a),
+                     src.a * dst.a - 2.0 * (dst.a - dst.rgb) * (src.a - src.rgb) + src.rgb * (1.0 - dst.a) + dst.rgb * (1.0 - src.a),
+                     step(src.a, 2.0 * src.rgb));
+    result.a = src.a + dst.a - src.a * dst.a;
+
+    return result;
+}
diff --git a/src/opengl/util/composition_mode_lighten.glsl b/src/opengl/util/composition_mode_lighten.glsl
new file mode 100644
index 0000000000..13ef507a4c
--- /dev/null
+++ b/src/opengl/util/composition_mode_lighten.glsl
@@ -0,0 +1,9 @@
+// Dca' = max(Sca.Da, Dca.Sa) + Sca.(1 - Da) + Dca.(1 - Sa)
+// Da'  = Sa + Da - Sa.Da 
+vec4 composite(vec4 src, vec4 dst)
+{
+    vec4 result;
+    result.rgb = max(src.rgb * dst.a, dst.rgb * src.a) + src.rgb * (1.0 - dst.a) + dst.rgb * (1.0 - src.a);
+    result.a = src.a + dst.a - src.a * dst.a;
+    return result;
+}
diff --git a/src/opengl/util/composition_mode_multiply.glsl b/src/opengl/util/composition_mode_multiply.glsl
new file mode 100644
index 0000000000..f90b7f00ad
--- /dev/null
+++ b/src/opengl/util/composition_mode_multiply.glsl
@@ -0,0 +1,9 @@
+// Dca' = Sca.Dca + Sca.(1 - Da) + Dca.(1 - Sa)
+// Da'  = Sa + Da - Sa.Da 
+vec4 composite(vec4 src, vec4 dst)
+{
+    vec4 result;
+    result.rgb = src.rgb * dst.rgb + src.rgb * (1.0 - dst.a) + dst.rgb * (1.0 - src.a);
+    result.a = src.a + dst.a - src.a * dst.a;
+    return result;
+}
diff --git a/src/opengl/util/composition_mode_overlay.glsl b/src/opengl/util/composition_mode_overlay.glsl
new file mode 100644
index 0000000000..f621bdee96
--- /dev/null
+++ b/src/opengl/util/composition_mode_overlay.glsl
@@ -0,0 +1,13 @@
+// Dca' = 2.Dca < Da ?
+//        2.Sca.Dca + Sca.(1 - Da) + Dca.(1 - Sa)
+//        Sa.Da - 2.(Da - Dca).(Sa - Sca) + Sca.(1 - Da) + Dca.(1 - Sa)
+// Da'  = Sa + Da - Sa.Da
+vec4 composite(vec4 src, vec4 dst)
+{
+    vec4 result;
+    result.rgb = mix(2.0 * src.rgb * dst.rgb + src.rgb * (1.0 - dst.a) + dst.rgb * (1.0 - src.a),
+                     src.a * dst.a - 2.0 * (dst.a - dst.rgb) * (src.a - src.rgb) + src.rgb * (1.0 - dst.a) + dst.rgb * (1.0 - src.a),
+                     step(dst.a, 2.0 * dst.rgb));
+    result.a = src.a + dst.a - src.a * dst.a;
+    return result;
+}
diff --git a/src/opengl/util/composition_mode_screen.glsl b/src/opengl/util/composition_mode_screen.glsl
new file mode 100644
index 0000000000..8f4f010032
--- /dev/null
+++ b/src/opengl/util/composition_mode_screen.glsl
@@ -0,0 +1,6 @@
+// Dca' = Sca + Dca - Sca.Dca
+// Da'  = Sa + Da - Sa.Da 
+vec4 composite(vec4 src, vec4 dst)
+{
+    return src + dst - src * dst;
+}
diff --git a/src/opengl/util/composition_mode_softlight.glsl b/src/opengl/util/composition_mode_softlight.glsl
new file mode 100644
index 0000000000..e4c1f89156
--- /dev/null
+++ b/src/opengl/util/composition_mode_softlight.glsl
@@ -0,0 +1,22 @@
+// if 2.Sca <= Sa
+//     Dca' = Dca.(Sa + (2.Sca - Sa).(1 - Dca/Da)) + Sca.(1 - Da) + Dca.(1 - Sa)
+// otherwise if 2.Sca > Sa and 4.Dca <= Da
+//     Dca' = Dca.Sa + Da.(2.Sca - Sa).(4.Dca/Da.(4.Dca/Da + 1).(Dca/Da - 1) + 7.Dca/Da) + Sca.(1 - Da) + Dca.(1 - Sa)
+// otherwise if 2.Sca > Sa and 4.Dca > Da
+//     Dca' = Dca.Sa + Da.(2.Sca - Sa).((Dca/Da)^0.5 - Dca/Da) + Sca.(1 - Da) + Dca.(1 - Sa)
+// Da'  = Sa + Da - Sa.Da 
+
+vec4 composite(vec4 src, vec4 dst)
+{
+    vec4 result;
+    float da = max(dst.a, 0.00001);
+    vec3 dst_np = dst.rgb / da;
+    result.rgb = mix(dst.rgb * (src.a + (2.0 * src.rgb - src.a) * (1.0 - dst_np)),
+                     mix(dst.rgb * src.a + dst.a * (2.0 * src.rgb - src.a) * ((16.0 * dst_np - 12.0) * dst_np + 3.0) * dst_np,
+                         dst.rgb * src.a + dst.a * (2.0 * src.rgb - src.a) * (sqrt(dst_np) - dst_np),
+                         step(dst.a, 4.0 * dst.rgb)),
+                     step(src.a, 2.0 * src.rgb))
+                 + src.rgb * (1.0 - dst.a) + dst.rgb * (1.0 - src.a);
+    result.a = src.a + dst.a - src.a * dst.a;
+    return result;
+}
diff --git a/src/opengl/util/composition_modes.conf b/src/opengl/util/composition_modes.conf
new file mode 100644
index 0000000000..df52830b99
--- /dev/null
+++ b/src/opengl/util/composition_modes.conf
@@ -0,0 +1,12 @@
+COMPOSITION_MODES_SIMPLE_PORTER_DUFF simple_porter_duff.glsl
+COMPOSITION_MODES_MULTIPLY composition_mode_multiply.glsl
+COMPOSITION_MODES_SCREEN composition_mode_screen.glsl
+COMPOSITION_MODES_OVERLAY composition_mode_overlay.glsl
+COMPOSITION_MODES_DARKEN composition_mode_darken.glsl
+COMPOSITION_MODES_LIGHTEN composition_mode_lighten.glsl
+COMPOSITION_MODES_COLORDODGE composition_mode_colordodge.glsl
+COMPOSITION_MODES_COLORBURN composition_mode_colorburn.glsl
+COMPOSITION_MODES_HARDLIGHT composition_mode_hardlight.glsl
+COMPOSITION_MODES_SOFTLIGHT composition_mode_softlight.glsl
+COMPOSITION_MODES_DIFFERENCE composition_mode_difference.glsl
+COMPOSITION_MODES_EXCLUSION composition_mode_exclusion.glsl
diff --git a/src/opengl/util/conical_brush.glsl b/src/opengl/util/conical_brush.glsl
new file mode 100644
index 0000000000..b3ec1d7efe
--- /dev/null
+++ b/src/opengl/util/conical_brush.glsl
@@ -0,0 +1,27 @@
+// conical gradient shader
+#define M_PI  3.14159265358979323846
+uniform sampler1D palette;
+uniform float angle;
+uniform vec3 inv_matrix_m0;
+uniform vec3 inv_matrix_m1;
+uniform vec3 inv_matrix_m2;
+
+vec4 brush()
+{
+    mat3 mat;
+
+    mat[0] = inv_matrix_m0;
+    mat[1] = inv_matrix_m1;
+    mat[2] = inv_matrix_m2;
+
+    vec3 hcoords = mat * vec3(gl_FragCoord.xy, 1);
+    vec2 A = hcoords.xy / hcoords.z;
+
+/*     float val = fmod((atan2(-A.y, A.x) + angle) / (2.0 * M_PI), 1); */
+    if (abs(A.y) == abs(A.x))
+ 	A.y += 0.002;
+    float t = (atan(-A.y, A.x) + angle) / (2.0 * M_PI);
+    float val = t - floor(t);
+    return texture1D(palette, val);
+}
+
diff --git a/src/opengl/util/ellipse_aa.glsl b/src/opengl/util/ellipse_aa.glsl
new file mode 100644
index 0000000000..257e3bbd47
--- /dev/null
+++ b/src/opengl/util/ellipse_aa.glsl
@@ -0,0 +1,58 @@
+uniform vec3 inv_matrix_m0;
+uniform vec3 inv_matrix_m1;
+uniform vec3 inv_matrix_m2;
+
+uniform vec2 ellipse_offset;
+
+// ellipse equation
+
+// s^2/a^2 + t^2/b^2 = 1
+//
+// implicit equation:
+// g(s,t) = 1 - s^2/r_s^2 - t^2/r_t^2
+
+// distance from ellipse:
+// grad = [dg/dx dg/dy]
+// d(s, t) ~= g(s, t) / |grad|
+
+// dg/dx = dg/ds * ds/dx + dg/dt * dt/dx
+// dg/dy = dg/ds * ds/dy + dg/dt * dt/dy
+
+float ellipse_aa()
+{
+    mat3 mat;
+
+    mat[0] = inv_matrix_m0;
+    mat[1] = inv_matrix_m1;
+    mat[2] = inv_matrix_m2;
+
+    vec3 hcoords = mat * vec3(gl_FragCoord.xy + ellipse_offset, 1);
+    float inv_w = 1.0 / hcoords.z;
+    vec2 st = hcoords.xy * inv_w;
+
+    vec4 xy = vec4(mat[0].xy, mat[1].xy);
+    vec2 h = vec2(mat[0].z, mat[1].z);
+
+    vec4 dstdxy = (xy.xzyw - h.xyxy * st.xxyy) * inv_w;
+
+    //dstdxy.x = (mat[0].x - mat[0].z * st.x) * inv_w; // ds/dx
+    //dstdxy.y = (mat[1].x - mat[1].z * st.x) * inv_w; // ds/dy
+    //dstdxy.z = (mat[0].y - mat[0].z * st.y) * inv_w; // dt/dx
+    //dstdxy.w = (mat[1].y - mat[1].z * st.y) * inv_w; // dt/dy
+
+    vec2 inv_r = gl_TexCoord[0].xy;
+    vec2 n = st * inv_r;
+    float g = 1.0 - dot(n, n);
+
+    vec2 dgdst = -2.0 * n * inv_r;
+
+    vec2 grad = vec2(dot(dgdst, dstdxy.xz),
+                     dot(dgdst, dstdxy.yw));
+
+    return smoothstep(-0.5, 0.5, g * inversesqrt(dot(grad, grad)));
+}
+
+void main()
+{
+    gl_FragColor = ellipse_aa().xxxx;
+}
diff --git a/src/opengl/util/fast_painter.glsl b/src/opengl/util/fast_painter.glsl
new file mode 100644
index 0000000000..63f5e5f3be
--- /dev/null
+++ b/src/opengl/util/fast_painter.glsl
@@ -0,0 +1,19 @@
+// fast painter for composition modes which can be implemented with blendfuncs
+
+uniform sampler2D mask_texture;
+uniform vec2 inv_mask_size;
+uniform vec2 mask_offset;
+uniform vec4 mask_channel;
+
+float mask()
+{
+    return dot(mask_channel, texture2D(mask_texture, (gl_FragCoord.xy + mask_offset) * inv_mask_size));
+}
+
+void main()
+{
+    // combine clip and coverage channels
+    float mask_alpha = mask();
+
+    gl_FragColor = brush() * mask_alpha;
+}
diff --git a/src/opengl/util/fragmentprograms_p.h b/src/opengl/util/fragmentprograms_p.h
new file mode 100644
index 0000000000..023b3ac7e8
--- /dev/null
+++ b/src/opengl/util/fragmentprograms_p.h
@@ -0,0 +1,7287 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef FRAGMENTPROGRAMS_P_H
+#define FRAGMENTPROGRAMS_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+enum FragmentVariable {
+    VAR_BRUSH_TEXTURE,
+    VAR_LINEAR,
+    VAR_INV_MATRIX_M1,
+    VAR_INV_MASK_SIZE,
+    VAR_INV_MATRIX_M2,
+    VAR_PORTERDUFF_AB,
+    VAR_MASK_CHANNEL,
+    VAR_ELLIPSE_OFFSET,
+    VAR_PORTERDUFF_XYZ,
+    VAR_INV_DST_SIZE,
+    VAR_MASK_TEXTURE,
+    VAR_DST_TEXTURE,
+    VAR_PALETTE,
+    VAR_MASK_OFFSET,
+    VAR_INV_BRUSH_TEXTURE_SIZE,
+    VAR_FMP2_M_RADIUS2,
+    VAR_FMP,
+    VAR_INV_MATRIX_M0,
+    VAR_ANGLE
+};
+
+enum FragmentBrushType {
+    FRAGMENT_PROGRAM_BRUSH_SOLID,
+    FRAGMENT_PROGRAM_BRUSH_RADIAL,
+    FRAGMENT_PROGRAM_BRUSH_CONICAL,
+    FRAGMENT_PROGRAM_BRUSH_LINEAR,
+    FRAGMENT_PROGRAM_BRUSH_TEXTURE,
+    FRAGMENT_PROGRAM_BRUSH_PATTERN
+};
+
+enum FragmentCompositionModeType {
+    COMPOSITION_MODES_SIMPLE_PORTER_DUFF,
+    COMPOSITION_MODES_MULTIPLY,
+    COMPOSITION_MODES_SCREEN,
+    COMPOSITION_MODES_OVERLAY,
+    COMPOSITION_MODES_DARKEN,
+    COMPOSITION_MODES_LIGHTEN,
+    COMPOSITION_MODES_COLORDODGE,
+    COMPOSITION_MODES_COLORBURN,
+    COMPOSITION_MODES_HARDLIGHT,
+    COMPOSITION_MODES_SOFTLIGHT,
+    COMPOSITION_MODES_DIFFERENCE,
+    COMPOSITION_MODES_EXCLUSION,
+    COMPOSITION_MODES_SIMPLE_PORTER_DUFF_NOMASK,
+    COMPOSITION_MODES_MULTIPLY_NOMASK,
+    COMPOSITION_MODES_SCREEN_NOMASK,
+    COMPOSITION_MODES_OVERLAY_NOMASK,
+    COMPOSITION_MODES_DARKEN_NOMASK,
+    COMPOSITION_MODES_LIGHTEN_NOMASK,
+    COMPOSITION_MODES_COLORDODGE_NOMASK,
+    COMPOSITION_MODES_COLORBURN_NOMASK,
+    COMPOSITION_MODES_HARDLIGHT_NOMASK,
+    COMPOSITION_MODES_SOFTLIGHT_NOMASK,
+    COMPOSITION_MODES_DIFFERENCE_NOMASK,
+    COMPOSITION_MODES_EXCLUSION_NOMASK,
+    COMPOSITION_MODE_BLEND_MODE_MASK,
+    COMPOSITION_MODE_BLEND_MODE_NOMASK
+};
+
+enum FragmentMaskType {
+    FRAGMENT_PROGRAM_MASK_TRAPEZOID_AA,
+    FRAGMENT_PROGRAM_MASK_ELLIPSE_AA
+};
+
+static const unsigned int num_fragment_variables = 19;
+
+static const unsigned int num_fragment_brushes = 6;
+static const unsigned int num_fragment_composition_modes = 26;
+static const unsigned int num_fragment_masks = 2;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_MASK_TRAPEZOID_AA =
+    "!!ARBfp1.0\n"
+    "PARAM c[1] = { { 0.5, 2 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "ADD R3.z, fragment.position.x, c[0].x;\n"
+    "ADD R0.y, fragment.position, -c[0].x;\n"
+    "MAX R4.x, fragment.texcoord[0].y, R0.y;\n"
+    "ADD R0.x, fragment.position.y, c[0];\n"
+    "MIN R3.w, R0.x, fragment.texcoord[0].x;\n"
+    "ADD R2.z, fragment.position.x, -c[0].x;\n"
+    "MOV R2.w, R3.z;\n"
+    "MOV R0.yw, R4.x;\n"
+    "MOV R0.xz, R3.w;\n"
+    "MAD R0, fragment.texcoord[1].xxzz, R0, fragment.texcoord[1].yyww;\n"
+    "MAD R0.zw, fragment.position.x, c[0].y, -R0;\n"
+    "MOV R2.x, R0;\n"
+    "MOV R2.y, R0.z;\n"
+    "MOV R1.w, R0;\n"
+    "MOV R1.z, R0.y;\n"
+    "MIN R1.xy, R2, R1.zwzw;\n"
+    "SGE R0.xy, R1.zwzw, R2;\n"
+    "ADD R0.zw, -fragment.texcoord[0], -fragment.texcoord[0];\n"
+    "MAD R3.xy, R0, R0.zwzw, fragment.texcoord[0].zwzw;\n"
+    "ADD R0, -R1.xxyy, R2.zwzw;\n"
+    "MAD R0, R0, R3.xxyy, R4.x;\n"
+    "ADD R3.xy, R0.ywzw, R0.xzzw;\n"
+    "ADD R4.zw, R3.w, -R0.xyxz;\n"
+    "ADD R0.zw, -R4.x, R0.xyyw;\n"
+    "ADD R0.xy, R3.z, -R1;\n"
+    "MAX R1.zw, R2.xyxy, R1;\n"
+    "MUL R0.xy, R0, R0.zwzw;\n"
+    "MAD R3.xy, -R3, c[0].x, R3.w;\n"
+    "ADD R2.w, R3.z, -R2.z;\n"
+    "MUL R2.xy, R3, R2.w;\n"
+    "ADD R2.w, R3, -R4.x;\n"
+    "ADD R3.xy, -R2.z, R1.zwzw;\n"
+    "MUL R3.xy, R4.zwzw, R3;\n"
+    "ADD R4.zw, R1.xyxy, R1;\n"
+    "MAD R0.zw, R4, c[0].x, -R2.z;\n"
+    "MAD R0.xy, -R0, c[0].x, R2.w;\n"
+    "MAD R4.zw, R0, R2.w, -R0.xyxy;\n"
+    "SGE R0.zw, R3.z, R1;\n"
+    "MAD R0.xy, R0.zwzw, R4.zwzw, R0;\n"
+    "MAD R3.xy, R3, c[0].x, -R2;\n"
+    "MAD R0.zw, R0, R3.xyxy, R2.xyxy;\n"
+    "ADD R2.xy, R0.zwzw, -R0;\n"
+    "SGE R0.zw, R2.z, R1.xyxy;\n"
+    "MAD R0.xy, R0.zwzw, R2, R0;\n"
+    "SGE R0.zw, R1, R2.z;\n"
+    "ADD R0.xy, R0, -R2.w;\n"
+    "SGE R1.xy, R3.z, R1;\n"
+    "MAD R0.xy, R1, R0, R2.w;\n"
+    "MAD R0.x, -R0, R0.z, R2.w;\n"
+    "SGE R0.z, R3.w, R4.x;\n"
+    "MAD R0.x, -R0.y, R0.w, R0;\n"
+    "MUL result.color, R0.x, R0.z;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_MASK_ELLIPSE_AA =
+    "!!ARBfp1.0\n"
+    "PARAM c[6] = { program.local[0..3],\n"
+    "		{ -2, 1, -0.5, 2 },\n"
+    "		{ 3 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "ADD R0.xy, fragment.position, c[3];\n"
+    "MUL R1.xyz, R0.y, c[1];\n"
+    "MAD R0.xyz, R0.x, c[0], R1;\n"
+    "ADD R0.xyz, R0, c[2];\n"
+    "RCP R2.z, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, R2.z;\n"
+    "MUL R2.xy, R0.zwzw, fragment.texcoord[0];\n"
+    "MOV R1.xy, c[0];\n"
+    "MOV R1.zw, c[1].xyxy;\n"
+    "MOV R0.x, c[0].z;\n"
+    "MOV R0.y, c[1].z;\n"
+    "MAD R0, R0.zzww, -R0.xyxy, R1.xzyw;\n"
+    "MUL R1.xy, R2, fragment.texcoord[0];\n"
+    "MUL R0, R2.z, R0;\n"
+    "MUL R1.xy, R1, c[4].x;\n"
+    "MUL R1.zw, R1.xyxy, R0.xyxz;\n"
+    "MUL R0.zw, R1.xyxy, R0.xyyw;\n"
+    "ADD R0.y, R0.z, R0.w;\n"
+    "ADD R0.x, R1.z, R1.w;\n"
+    "MUL R0.xy, R0, R0;\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.zw, R2.xyxy, R2.xyxy;\n"
+    "ADD R0.z, R0, R0.w;\n"
+    "ADD R0.y, -R0.z, c[4];\n"
+    "RSQ R0.x, R0.x;\n"
+    "MAD_SAT R0.x, R0, R0.y, -c[4].z;\n"
+    "MUL R0.y, -R0.x, c[4].w;\n"
+    "ADD R0.y, R0, c[5].x;\n"
+    "MUL R0.x, R0, R0;\n"
+    "MUL result.color, R0.x, R0.y;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_SIMPLE_PORTER_DUFF =
+    "!!ARBfp1.0\n"
+    "PARAM c[7] = { program.local[0..5],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xy, fragment.position, c[3];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "MUL R1.xyz, R0, c[0].y;\n"
+    "MUL R2.xyz, fragment.color.primary.w, R1;\n"
+    "MUL R1.xyz, fragment.color.primary, c[0].x;\n"
+    "MAD R2.xyz, R0.w, R1, R2;\n"
+    "ADD R3.xy, fragment.position, c[4];\n"
+    "ADD R1.w, -R0, c[6].x;\n"
+    "MUL R1.xyz, fragment.color.primary, c[1].y;\n"
+    "MAD R2.xyz, R1.w, R1, R2;\n"
+    "MUL R1.xyz, R0, c[1].z;\n"
+    "ADD R2.w, -fragment.color.primary, c[6].x;\n"
+    "MAD R2.xyz, R2.w, R1, R2;\n"
+    "MUL R1.z, R0.w, R2.w;\n"
+    "MUL R1.x, fragment.color.primary.w, R0.w;\n"
+    "MUL R1.y, fragment.color.primary.w, R1.w;\n"
+    "DP3 R2.w, R1, c[1];\n"
+    "MUL R3.xy, R3, c[2];\n"
+    "TEX R1, R3, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[5];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_MULTIPLY =
+    "!!ARBfp1.0\n"
+    "PARAM c[5] = { program.local[0..3],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "MUL R0.xy, fragment.position, c[1];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "ADD R1.x, -R0.w, c[4];\n"
+    "MUL R1.xyz, fragment.color.primary, R1.x;\n"
+    "MAD R1.xyz, fragment.color.primary, R0, R1;\n"
+    "ADD R1.w, -fragment.color.primary, c[4].x;\n"
+    "MAD R2.xyz, R0, R1.w, R1;\n"
+    "ADD R1.z, fragment.color.primary.w, R0.w;\n"
+    "MAD R2.w, -fragment.color.primary, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[2];\n"
+    "MUL R1.xy, R1, c[0];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[3];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_SCREEN =
+    "!!ARBfp1.0\n"
+    "PARAM c[4] = { program.local[0..3] };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "MUL R0.xy, fragment.position, c[1];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "ADD R1.xy, fragment.position, c[2];\n"
+    "ADD R2, fragment.color.primary, R0;\n"
+    "MUL R1.xy, R1, c[0];\n"
+    "MAD R2, -fragment.color.primary, R0, R2;\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[3];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_OVERLAY =
+    "!!ARBfp1.0\n"
+    "PARAM c[5] = { program.local[0..3],\n"
+    "		{ 2, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xy, fragment.position, c[1];\n"
+    "TEX R1, R0, texture[0], 2D;\n"
+    "ADD R0.w, -R1, c[4].y;\n"
+    "MUL R3.xyz, fragment.color.primary, R0.w;\n"
+    "ADD R2.xyz, fragment.color.primary.w, -fragment.color.primary;\n"
+    "ADD R0.xyz, R1.w, -R1;\n"
+    "MUL R0.xyz, R0, R2;\n"
+    "MUL R0.xyz, R0, c[4].x;\n"
+    "MAD R0.xyz, fragment.color.primary.w, R1.w, -R0;\n"
+    "MAD R0.xyz, fragment.color.primary, R0.w, R0;\n"
+    "MUL R2.xyz, fragment.color.primary, R1;\n"
+    "MAD R2.xyz, R2, c[4].x, R3;\n"
+    "ADD R0.w, -fragment.color.primary, c[4].y;\n"
+    "MAD R3.xyz, R1, R0.w, R0;\n"
+    "MAD R2.xyz, R1, R0.w, R2;\n"
+    "MUL R0.xyz, R1, c[4].x;\n"
+    "SGE R0.xyz, R0, R1.w;\n"
+    "ADD R3.xyz, R3, -R2;\n"
+    "MAD R2.xyz, R0, R3, R2;\n"
+    "ADD R0.z, fragment.color.primary.w, R1.w;\n"
+    "MAD R2.w, -fragment.color.primary, R1, R0.z;\n"
+    "ADD R0.xy, fragment.position, c[2];\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R0, R0, texture[1], 2D;\n"
+    "ADD R2, R2, -R1;\n"
+    "DP4 R0.x, R0, c[3];\n"
+    "MAD result.color, R0.x, R2, R1;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_DARKEN =
+    "!!ARBfp1.0\n"
+    "PARAM c[5] = { program.local[0..3],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "MUL R0.xy, fragment.position, c[1];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "MUL R2.xyz, fragment.color.primary.w, R0;\n"
+    "MUL R1.xyz, fragment.color.primary, R0.w;\n"
+    "MIN R1.xyz, R1, R2;\n"
+    "ADD R1.w, -R0, c[4].x;\n"
+    "MAD R1.xyz, fragment.color.primary, R1.w, R1;\n"
+    "ADD R1.w, -fragment.color.primary, c[4].x;\n"
+    "MAD R2.xyz, R0, R1.w, R1;\n"
+    "ADD R1.z, fragment.color.primary.w, R0.w;\n"
+    "MAD R2.w, -fragment.color.primary, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[2];\n"
+    "MUL R1.xy, R1, c[0];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[3];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_LIGHTEN =
+    "!!ARBfp1.0\n"
+    "PARAM c[5] = { program.local[0..3],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "MUL R0.xy, fragment.position, c[1];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "MUL R2.xyz, fragment.color.primary.w, R0;\n"
+    "MUL R1.xyz, fragment.color.primary, R0.w;\n"
+    "MAX R1.xyz, R1, R2;\n"
+    "ADD R1.w, -R0, c[4].x;\n"
+    "MAD R1.xyz, fragment.color.primary, R1.w, R1;\n"
+    "ADD R1.w, -fragment.color.primary, c[4].x;\n"
+    "MAD R2.xyz, R0, R1.w, R1;\n"
+    "ADD R1.z, fragment.color.primary.w, R0.w;\n"
+    "MAD R2.w, -fragment.color.primary, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[2];\n"
+    "MUL R1.xy, R1, c[0];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[3];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_COLORDODGE =
+    "!!ARBfp1.0\n"
+    "PARAM c[5] = { program.local[0..3],\n"
+    "		{ 1, 1e-006 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xy, fragment.position, c[1];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "ADD R1.x, -fragment.color.primary.w, c[4];\n"
+    "MAX R1.y, fragment.color.primary.w, c[4];\n"
+    "MUL R2.xyz, R0, R1.x;\n"
+    "ADD R1.w, -R0, c[4].x;\n"
+    "MAD R3.xyz, fragment.color.primary, R1.w, R2;\n"
+    "RCP R1.y, R1.y;\n"
+    "MAD R1.xyz, -fragment.color.primary, R1.y, c[4].x;\n"
+    "MAX R1.xyz, R1, c[4].y;\n"
+    "MUL R2.xyz, fragment.color.primary.w, R0;\n"
+    "MUL R1.w, fragment.color.primary, R0;\n"
+    "RCP R1.x, R1.x;\n"
+    "RCP R1.y, R1.y;\n"
+    "RCP R1.z, R1.z;\n"
+    "MAD R1.xyz, R2, R1, R3;\n"
+    "MAD R3.xyz, fragment.color.primary.w, R0.w, R3;\n"
+    "MAD R2.xyz, fragment.color.primary, R0.w, R2;\n"
+    "ADD R3.xyz, R3, -R1;\n"
+    "SGE R2.xyz, R2, R1.w;\n"
+    "MAD R2.xyz, R2, R3, R1;\n"
+    "ADD R1.z, fragment.color.primary.w, R0.w;\n"
+    "MAD R2.w, -fragment.color.primary, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[2];\n"
+    "MUL R1.xy, R1, c[0];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[3];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_COLORBURN =
+    "!!ARBfp1.0\n"
+    "PARAM c[5] = { program.local[0..3],\n"
+    "		{ 1, 9.9999997e-006 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "MUL R0.xy, fragment.position, c[1];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "ADD R1.w, -R0, c[4].x;\n"
+    "MUL R1.xyz, fragment.color.primary.w, R0;\n"
+    "MAD R2.xyz, fragment.color.primary, R0.w, R1;\n"
+    "MAD R1.xyz, -fragment.color.primary.w, R0.w, R2;\n"
+    "MUL R3.xyz, fragment.color.primary.w, R1;\n"
+    "MAX R1.xyz, fragment.color.primary, c[4].y;\n"
+    "ADD R2.w, -fragment.color.primary, c[4].x;\n"
+    "MUL R4.xyz, fragment.color.primary, R1.w;\n"
+    "RCP R1.x, R1.x;\n"
+    "RCP R1.y, R1.y;\n"
+    "RCP R1.z, R1.z;\n"
+    "MAD R3.xyz, R3, R1, R4;\n"
+    "MUL R1.xyz, R0, R2.w;\n"
+    "MAD R1.xyz, fragment.color.primary, R1.w, R1;\n"
+    "MAD R3.xyz, R0, R2.w, R3;\n"
+    "MUL R1.w, fragment.color.primary, R0;\n"
+    "ADD R3.xyz, R3, -R1;\n"
+    "SGE R2.xyz, R2, R1.w;\n"
+    "MAD R2.xyz, R2, R3, R1;\n"
+    "ADD R1.z, fragment.color.primary.w, R0.w;\n"
+    "MAD R2.w, -fragment.color.primary, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[2];\n"
+    "MUL R1.xy, R1, c[0];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[3];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_HARDLIGHT =
+    "!!ARBfp1.0\n"
+    "PARAM c[5] = { program.local[0..3],\n"
+    "		{ 2, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xy, fragment.position, c[1];\n"
+    "TEX R1, R0, texture[0], 2D;\n"
+    "ADD R0.w, -R1, c[4].y;\n"
+    "MUL R3.xyz, fragment.color.primary, R0.w;\n"
+    "ADD R2.xyz, fragment.color.primary.w, -fragment.color.primary;\n"
+    "ADD R0.xyz, R1.w, -R1;\n"
+    "MUL R0.xyz, R0, R2;\n"
+    "MUL R0.xyz, R0, c[4].x;\n"
+    "MAD R0.xyz, fragment.color.primary.w, R1.w, -R0;\n"
+    "MAD R0.xyz, fragment.color.primary, R0.w, R0;\n"
+    "MUL R2.xyz, fragment.color.primary, R1;\n"
+    "MAD R2.xyz, R2, c[4].x, R3;\n"
+    "ADD R0.w, -fragment.color.primary, c[4].y;\n"
+    "MAD R3.xyz, R1, R0.w, R0;\n"
+    "MAD R2.xyz, R1, R0.w, R2;\n"
+    "MUL R0.xyz, fragment.color.primary, c[4].x;\n"
+    "SGE R0.xyz, R0, fragment.color.primary.w;\n"
+    "ADD R3.xyz, R3, -R2;\n"
+    "MAD R2.xyz, R0, R3, R2;\n"
+    "ADD R0.z, fragment.color.primary.w, R1.w;\n"
+    "MAD R2.w, -fragment.color.primary, R1, R0.z;\n"
+    "ADD R0.xy, fragment.position, c[2];\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R0, R0, texture[1], 2D;\n"
+    "ADD R2, R2, -R1;\n"
+    "DP4 R0.x, R0, c[3];\n"
+    "MAD result.color, R0.x, R2, R1;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_SOFTLIGHT =
+    "!!ARBfp1.0\n"
+    "PARAM c[6] = { program.local[0..3],\n"
+    "		{ 1, 2, 9.9999997e-006, 4 },\n"
+    "		{ 16, 12, 3 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "TEMP R5;\n"
+    "MUL R0.xy, fragment.position, c[1];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "MAX R1.x, R0.w, c[4].z;\n"
+    "RCP R1.x, R1.x;\n"
+    "MUL R2.xyz, R0, R1.x;\n"
+    "MAD R1.xyz, R2, c[5].x, -c[5].y;\n"
+    "MAD R3.xyz, R2, R1, c[5].z;\n"
+    "MAD R1.xyz, fragment.color.primary, c[4].y, -fragment.color.primary.w;\n"
+    "MUL R4.xyz, R0.w, R1;\n"
+    "MUL R5.xyz, R4, R3;\n"
+    "RSQ R1.w, R2.x;\n"
+    "RSQ R2.w, R2.z;\n"
+    "RCP R3.x, R1.w;\n"
+    "RSQ R1.w, R2.y;\n"
+    "MUL R5.xyz, R2, R5;\n"
+    "RCP R3.z, R2.w;\n"
+    "RCP R3.y, R1.w;\n"
+    "ADD R3.xyz, -R2, R3;\n"
+    "MUL R3.xyz, R4, R3;\n"
+    "ADD R2.xyz, -R2, c[4].x;\n"
+    "MAD R1.xyz, R1, R2, fragment.color.primary.w;\n"
+    "MUL R2.xyz, fragment.color.primary, c[4].y;\n"
+    "MAD R4.xyz, fragment.color.primary.w, R0, R5;\n"
+    "MAD R3.xyz, fragment.color.primary.w, R0, R3;\n"
+    "ADD R5.xyz, R3, -R4;\n"
+    "MUL R3.xyz, R0, c[4].w;\n"
+    "SGE R3.xyz, R3, R0.w;\n"
+    "MAD R3.xyz, R3, R5, R4;\n"
+    "MAD R3.xyz, -R0, R1, R3;\n"
+    "MUL R1.xyz, R0, R1;\n"
+    "SGE R2.xyz, R2, fragment.color.primary.w;\n"
+    "MAD R2.xyz, R2, R3, R1;\n"
+    "ADD R1.x, -R0.w, c[4];\n"
+    "MAD R2.xyz, fragment.color.primary, R1.x, R2;\n"
+    "ADD R1.x, -fragment.color.primary.w, c[4];\n"
+    "MAD R2.xyz, R0, R1.x, R2;\n"
+    "ADD R1.z, fragment.color.primary.w, R0.w;\n"
+    "MAD R2.w, -fragment.color.primary, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[2];\n"
+    "MUL R1.xy, R1, c[0];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[3];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_DIFFERENCE =
+    "!!ARBfp1.0\n"
+    "PARAM c[5] = { program.local[0..3],\n"
+    "		{ 2 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xy, fragment.position, c[1];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "ADD R1.xyz, fragment.color.primary, R0;\n"
+    "MUL R3.xyz, fragment.color.primary.w, R0;\n"
+    "MUL R2.xyz, fragment.color.primary, R0.w;\n"
+    "MIN R2.xyz, R2, R3;\n"
+    "MAD R2.xyz, -R2, c[4].x, R1;\n"
+    "ADD R1.z, fragment.color.primary.w, R0.w;\n"
+    "MAD R2.w, -fragment.color.primary, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[2];\n"
+    "MUL R1.xy, R1, c[0];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[3];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_EXCLUSION =
+    "!!ARBfp1.0\n"
+    "PARAM c[5] = { program.local[0..3],\n"
+    "		{ 2, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "MUL R0.xy, fragment.position, c[1];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "MUL R1.xyz, fragment.color.primary.w, R0;\n"
+    "MAD R2.xyz, fragment.color.primary, R0.w, R1;\n"
+    "MUL R1.xyz, fragment.color.primary, R0;\n"
+    "MAD R1.xyz, -R1, c[4].x, R2;\n"
+    "ADD R1.w, -R0, c[4].y;\n"
+    "MAD R1.xyz, fragment.color.primary, R1.w, R1;\n"
+    "ADD R1.w, -fragment.color.primary, c[4].y;\n"
+    "MAD R2.xyz, R0, R1.w, R1;\n"
+    "ADD R1.z, fragment.color.primary.w, R0.w;\n"
+    "MAD R2.w, -fragment.color.primary, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[2];\n"
+    "MUL R1.xy, R1, c[0];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[3];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_SIMPLE_PORTER_DUFF_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[4] = { program.local[0..2],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "MUL R0.xy, fragment.position, c[2];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "MUL R1.xyz, R0, c[0].y;\n"
+    "MUL R2.xyz, fragment.color.primary.w, R1;\n"
+    "MUL R1.xyz, fragment.color.primary, c[0].x;\n"
+    "MAD R2.xyz, R0.w, R1, R2;\n"
+    "MUL R0.xyz, R0, c[1].z;\n"
+    "ADD R1.w, -R0, c[3].x;\n"
+    "MUL R1.xyz, fragment.color.primary, c[1].y;\n"
+    "MAD R1.xyz, R1.w, R1, R2;\n"
+    "ADD R2.x, -fragment.color.primary.w, c[3];\n"
+    "MAD result.color.xyz, R2.x, R0, R1;\n"
+    "MUL R0.x, fragment.color.primary.w, R0.w;\n"
+    "MUL R0.z, R0.w, R2.x;\n"
+    "MUL R0.y, fragment.color.primary.w, R1.w;\n"
+    "DP3 result.color.w, R0, c[1];\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_MULTIPLY_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[2] = { program.local[0],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "MUL R0.xy, fragment.position, c[0];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "ADD R1.x, -R0.w, c[1];\n"
+    "MUL R1.xyz, fragment.color.primary, R1.x;\n"
+    "ADD R1.w, fragment.color.primary, R0;\n"
+    "MAD R1.xyz, fragment.color.primary, R0, R1;\n"
+    "ADD R2.x, -fragment.color.primary.w, c[1];\n"
+    "MAD result.color.xyz, R0, R2.x, R1;\n"
+    "MAD result.color.w, -fragment.color.primary, R0, R1;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_SCREEN_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[1] = { program.local[0] };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "MUL R0.xy, fragment.position, c[0];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "ADD R1, fragment.color.primary, R0;\n"
+    "MAD result.color, -fragment.color.primary, R0, R1;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_OVERLAY_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[2] = { program.local[0],\n"
+    "		{ 2, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xy, fragment.position, c[0];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "ADD R1.w, -R0, c[1].y;\n"
+    "ADD R2.xyz, fragment.color.primary.w, -fragment.color.primary;\n"
+    "ADD R1.xyz, R0.w, -R0;\n"
+    "MUL R1.xyz, R1, R2;\n"
+    "MUL R1.xyz, R1, c[1].x;\n"
+    "MAD R1.xyz, fragment.color.primary.w, R0.w, -R1;\n"
+    "MUL R3.xyz, fragment.color.primary, R1.w;\n"
+    "MUL R2.xyz, fragment.color.primary, R0;\n"
+    "MAD R1.xyz, fragment.color.primary, R1.w, R1;\n"
+    "ADD R1.w, -fragment.color.primary, c[1].y;\n"
+    "MAD R2.xyz, R2, c[1].x, R3;\n"
+    "MAD R2.xyz, R0, R1.w, R2;\n"
+    "MAD R1.xyz, R0, R1.w, R1;\n"
+    "MUL R0.xyz, R0, c[1].x;\n"
+    "ADD R1.w, fragment.color.primary, R0;\n"
+    "ADD R1.xyz, R1, -R2;\n"
+    "SGE R0.xyz, R0, R0.w;\n"
+    "MAD result.color.xyz, R0, R1, R2;\n"
+    "MAD result.color.w, -fragment.color.primary, R0, R1;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_DARKEN_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[2] = { program.local[0],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "MUL R0.xy, fragment.position, c[0];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "MUL R2.xyz, fragment.color.primary.w, R0;\n"
+    "MUL R1.xyz, fragment.color.primary, R0.w;\n"
+    "MIN R1.xyz, R1, R2;\n"
+    "ADD R1.w, -R0, c[1].x;\n"
+    "MAD R1.xyz, fragment.color.primary, R1.w, R1;\n"
+    "ADD R1.w, fragment.color.primary, R0;\n"
+    "ADD R2.x, -fragment.color.primary.w, c[1];\n"
+    "MAD result.color.xyz, R0, R2.x, R1;\n"
+    "MAD result.color.w, -fragment.color.primary, R0, R1;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_LIGHTEN_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[2] = { program.local[0],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "MUL R0.xy, fragment.position, c[0];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "MUL R2.xyz, fragment.color.primary.w, R0;\n"
+    "MUL R1.xyz, fragment.color.primary, R0.w;\n"
+    "MAX R1.xyz, R1, R2;\n"
+    "ADD R1.w, -R0, c[1].x;\n"
+    "MAD R1.xyz, fragment.color.primary, R1.w, R1;\n"
+    "ADD R1.w, fragment.color.primary, R0;\n"
+    "ADD R2.x, -fragment.color.primary.w, c[1];\n"
+    "MAD result.color.xyz, R0, R2.x, R1;\n"
+    "MAD result.color.w, -fragment.color.primary, R0, R1;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_COLORDODGE_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[2] = { program.local[0],\n"
+    "		{ 1, 1e-006 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "MAX R1.y, fragment.color.primary.w, c[1];\n"
+    "RCP R2.x, R1.y;\n"
+    "MUL R0.xy, fragment.position, c[0];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "ADD R1.x, -fragment.color.primary.w, c[1];\n"
+    "MUL R1.xyz, R0, R1.x;\n"
+    "ADD R1.w, -R0, c[1].x;\n"
+    "MAD R1.xyz, fragment.color.primary, R1.w, R1;\n"
+    "MAD R2.xyz, -fragment.color.primary, R2.x, c[1].x;\n"
+    "MAX R2.xyz, R2, c[1].y;\n"
+    "MUL R0.xyz, fragment.color.primary.w, R0;\n"
+    "MUL R1.w, fragment.color.primary, R0;\n"
+    "RCP R2.x, R2.x;\n"
+    "RCP R2.y, R2.y;\n"
+    "RCP R2.z, R2.z;\n"
+    "MAD R2.xyz, R0, R2, R1;\n"
+    "MAD R1.xyz, fragment.color.primary.w, R0.w, R1;\n"
+    "MAD R0.xyz, fragment.color.primary, R0.w, R0;\n"
+    "SGE R0.xyz, R0, R1.w;\n"
+    "ADD R1.xyz, R1, -R2;\n"
+    "ADD R1.w, fragment.color.primary, R0;\n"
+    "MAD result.color.xyz, R0, R1, R2;\n"
+    "MAD result.color.w, -fragment.color.primary, R0, R1;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_COLORBURN_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[2] = { program.local[0],\n"
+    "		{ 1, 9.9999997e-006 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "MUL R0.xy, fragment.position, c[0];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "MUL R1.xyz, fragment.color.primary.w, R0;\n"
+    "MAD R2.xyz, fragment.color.primary, R0.w, R1;\n"
+    "MAD R1.xyz, -fragment.color.primary.w, R0.w, R2;\n"
+    "MUL R3.xyz, fragment.color.primary.w, R1;\n"
+    "MAX R1.xyz, fragment.color.primary, c[1].y;\n"
+    "ADD R1.w, -R0, c[1].x;\n"
+    "MUL R4.xyz, fragment.color.primary, R1.w;\n"
+    "ADD R2.w, -fragment.color.primary, c[1].x;\n"
+    "RCP R1.x, R1.x;\n"
+    "RCP R1.y, R1.y;\n"
+    "RCP R1.z, R1.z;\n"
+    "MAD R1.xyz, R3, R1, R4;\n"
+    "MUL R3.xyz, R0, R2.w;\n"
+    "MAD R0.xyz, R0, R2.w, R1;\n"
+    "MAD R1.xyz, fragment.color.primary, R1.w, R3;\n"
+    "MUL R1.w, fragment.color.primary, R0;\n"
+    "SGE R2.xyz, R2, R1.w;\n"
+    "ADD R0.xyz, R0, -R1;\n"
+    "ADD R1.w, fragment.color.primary, R0;\n"
+    "MAD result.color.xyz, R2, R0, R1;\n"
+    "MAD result.color.w, -fragment.color.primary, R0, R1;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_HARDLIGHT_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[2] = { program.local[0],\n"
+    "		{ 2, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xy, fragment.position, c[0];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "ADD R1.w, -R0, c[1].y;\n"
+    "ADD R2.xyz, fragment.color.primary.w, -fragment.color.primary;\n"
+    "ADD R1.xyz, R0.w, -R0;\n"
+    "MUL R1.xyz, R1, R2;\n"
+    "MUL R1.xyz, R1, c[1].x;\n"
+    "MAD R1.xyz, fragment.color.primary.w, R0.w, -R1;\n"
+    "MAD R1.xyz, fragment.color.primary, R1.w, R1;\n"
+    "MUL R3.xyz, fragment.color.primary, R1.w;\n"
+    "MUL R2.xyz, fragment.color.primary, R0;\n"
+    "ADD R1.w, -fragment.color.primary, c[1].y;\n"
+    "MAD R2.xyz, R2, c[1].x, R3;\n"
+    "MAD R2.xyz, R0, R1.w, R2;\n"
+    "MAD R0.xyz, R0, R1.w, R1;\n"
+    "ADD R1.xyz, R0, -R2;\n"
+    "MUL R0.xyz, fragment.color.primary, c[1].x;\n"
+    "ADD R1.w, fragment.color.primary, R0;\n"
+    "SGE R0.xyz, R0, fragment.color.primary.w;\n"
+    "MAD result.color.xyz, R0, R1, R2;\n"
+    "MAD result.color.w, -fragment.color.primary, R0, R1;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_SOFTLIGHT_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[3] = { program.local[0],\n"
+    "		{ 1, 2, 9.9999997e-006, 4 },\n"
+    "		{ 16, 12, 3 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "TEMP R5;\n"
+    "MUL R0.xy, fragment.position, c[0];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "MAX R1.x, R0.w, c[1].z;\n"
+    "RCP R1.x, R1.x;\n"
+    "MUL R2.xyz, R0, R1.x;\n"
+    "MAD R1.xyz, R2, c[2].x, -c[2].y;\n"
+    "MAD R3.xyz, R2, R1, c[2].z;\n"
+    "MAD R1.xyz, fragment.color.primary, c[1].y, -fragment.color.primary.w;\n"
+    "MUL R4.xyz, R0.w, R1;\n"
+    "MUL R5.xyz, R4, R3;\n"
+    "RSQ R1.w, R2.x;\n"
+    "RCP R3.x, R1.w;\n"
+    "RSQ R2.w, R2.z;\n"
+    "RSQ R1.w, R2.y;\n"
+    "MUL R5.xyz, R2, R5;\n"
+    "RCP R3.z, R2.w;\n"
+    "RCP R3.y, R1.w;\n"
+    "ADD R3.xyz, -R2, R3;\n"
+    "MUL R3.xyz, R4, R3;\n"
+    "ADD R2.xyz, -R2, c[1].x;\n"
+    "MAD R1.xyz, R1, R2, fragment.color.primary.w;\n"
+    "MUL R2.xyz, fragment.color.primary, c[1].y;\n"
+    "MAD R4.xyz, fragment.color.primary.w, R0, R5;\n"
+    "MAD R3.xyz, fragment.color.primary.w, R0, R3;\n"
+    "ADD R5.xyz, R3, -R4;\n"
+    "MUL R3.xyz, R0, c[1].w;\n"
+    "SGE R3.xyz, R3, R0.w;\n"
+    "MAD R3.xyz, R3, R5, R4;\n"
+    "MAD R3.xyz, -R0, R1, R3;\n"
+    "MUL R1.xyz, R0, R1;\n"
+    "SGE R2.xyz, R2, fragment.color.primary.w;\n"
+    "MAD R2.xyz, R2, R3, R1;\n"
+    "ADD R1.x, -R0.w, c[1];\n"
+    "MAD R2.xyz, fragment.color.primary, R1.x, R2;\n"
+    "ADD R1.x, fragment.color.primary.w, R0.w;\n"
+    "ADD R1.y, -fragment.color.primary.w, c[1].x;\n"
+    "MAD result.color.xyz, R0, R1.y, R2;\n"
+    "MAD result.color.w, -fragment.color.primary, R0, R1.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_DIFFERENCE_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[2] = { program.local[0],\n"
+    "		{ 2 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "MUL R0.xy, fragment.position, c[0];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "MUL R2.xyz, fragment.color.primary.w, R0;\n"
+    "MUL R1.xyz, fragment.color.primary, R0.w;\n"
+    "ADD R1.w, fragment.color.primary, R0;\n"
+    "MIN R1.xyz, R1, R2;\n"
+    "ADD R0.xyz, fragment.color.primary, R0;\n"
+    "MAD result.color.xyz, -R1, c[1].x, R0;\n"
+    "MAD result.color.w, -fragment.color.primary, R0, R1;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_EXCLUSION_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[2] = { program.local[0],\n"
+    "		{ 2, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "MUL R0.xy, fragment.position, c[0];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "MUL R1.xyz, fragment.color.primary.w, R0;\n"
+    "MAD R2.xyz, fragment.color.primary, R0.w, R1;\n"
+    "MUL R1.xyz, fragment.color.primary, R0;\n"
+    "MAD R1.xyz, -R1, c[1].x, R2;\n"
+    "ADD R1.w, -R0, c[1].y;\n"
+    "MAD R1.xyz, fragment.color.primary, R1.w, R1;\n"
+    "ADD R1.w, fragment.color.primary, R0;\n"
+    "ADD R2.x, -fragment.color.primary.w, c[1].y;\n"
+    "MAD result.color.xyz, R0, R2.x, R1;\n"
+    "MAD result.color.w, -fragment.color.primary, R0, R1;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODE_BLEND_MODE_MASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[3] = { program.local[0..2] };\n"
+    "TEMP R0;\n"
+    "ADD R0.xy, fragment.position, c[1];\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "DP4 R0.x, R0, c[2];\n"
+    "MUL result.color, fragment.color.primary, R0.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODE_BLEND_MODE_NOMASK =
+    "!!ARBfp1.0\n"
+    "MOV result.color, fragment.color.primary;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_SIMPLE_PORTER_DUFF =
+    "!!ARBfp1.0\n"
+    "PARAM c[12] = { program.local[0..10],\n"
+    "		{ 2, 4, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[3];\n"
+    "MAD R0.xyz, fragment.position.x, c[2], R0;\n"
+    "ADD R0.xyz, R0, c[4];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, R0.xyxy;\n"
+    "ADD R0.z, R0, R0.w;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.z, -R0, c[1].x;\n"
+    "MUL R0.y, R0.x, c[11].x;\n"
+    "MUL R0.z, R0, c[11].y;\n"
+    "MAD R0.x, R0.y, R0.y, -R0.z;\n"
+    "RSQ R0.x, R0.x;\n"
+    "RCP R0.z, R0.x;\n"
+    "ADD R1.x, -R0.y, R0.z;\n"
+    "MOV R0.x, c[11];\n"
+    "MUL R0.z, R0.x, c[1].x;\n"
+    "RCP R1.y, R0.z;\n"
+    "MUL R0.xy, fragment.position, c[8];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "MUL R1.x, R1, R1.y;\n"
+    "TEX R1, R1, texture[2], 1D;\n"
+    "MUL R2.xyz, R0, c[5].y;\n"
+    "MUL R3.xyz, R1.w, R2;\n"
+    "MUL R2.xyz, R1, c[5].x;\n"
+    "MAD R2.xyz, R0.w, R2, R3;\n"
+    "ADD R3.xy, fragment.position, c[9];\n"
+    "ADD R2.w, -R0, c[11].z;\n"
+    "MUL R1.xyz, R1, c[6].y;\n"
+    "MAD R2.xyz, R2.w, R1, R2;\n"
+    "MUL R1.xyz, R0, c[6].z;\n"
+    "ADD R3.z, -R1.w, c[11];\n"
+    "MAD R2.xyz, R3.z, R1, R2;\n"
+    "MUL R1.y, R1.w, R2.w;\n"
+    "MUL R1.x, R1.w, R0.w;\n"
+    "MUL R1.z, R0.w, R3;\n"
+    "DP3 R2.w, R1, c[6];\n"
+    "MUL R3.xy, R3, c[7];\n"
+    "TEX R1, R3, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[10];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_MULTIPLY =
+    "!!ARBfp1.0\n"
+    "PARAM c[10] = { program.local[0..8],\n"
+    "		{ 2, 4, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "MUL R0.xyz, fragment.position.y, c[3];\n"
+    "MAD R0.xyz, fragment.position.x, c[2], R0;\n"
+    "ADD R0.xyz, R0, c[4];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, R0.xyxy;\n"
+    "ADD R0.z, R0, R0.w;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.z, -R0, c[1].x;\n"
+    "MUL R0.y, R0.x, c[9].x;\n"
+    "MUL R0.z, R0, c[9].y;\n"
+    "MAD R0.x, R0.y, R0.y, -R0.z;\n"
+    "RSQ R0.x, R0.x;\n"
+    "RCP R0.z, R0.x;\n"
+    "ADD R1.x, -R0.y, R0.z;\n"
+    "MOV R0.x, c[9];\n"
+    "MUL R0.z, R0.x, c[1].x;\n"
+    "RCP R1.y, R0.z;\n"
+    "MUL R0.xy, fragment.position, c[6];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "MUL R1.x, R1, R1.y;\n"
+    "TEX R1, R1, texture[2], 1D;\n"
+    "ADD R2.x, -R0.w, c[9].z;\n"
+    "MUL R2.xyz, R1, R2.x;\n"
+    "MAD R1.xyz, R1, R0, R2;\n"
+    "ADD R2.x, -R1.w, c[9].z;\n"
+    "MAD R2.xyz, R0, R2.x, R1;\n"
+    "ADD R1.z, R1.w, R0.w;\n"
+    "MAD R2.w, -R1, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[7];\n"
+    "MUL R1.xy, R1, c[5];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[8];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_SCREEN =
+    "!!ARBfp1.0\n"
+    "PARAM c[10] = { program.local[0..8],\n"
+    "		{ 2, 4 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[3];\n"
+    "MAD R0.xyz, fragment.position.x, c[2], R0;\n"
+    "ADD R0.xyz, R0, c[4];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, R0.xyxy;\n"
+    "ADD R0.z, R0, R0.w;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.y, R0.x, c[9].x;\n"
+    "MOV R0.x, c[9];\n"
+    "MUL R0.z, -R0, c[1].x;\n"
+    "MUL R0.z, R0, c[9].y;\n"
+    "MAD R0.z, R0.y, R0.y, -R0;\n"
+    "ADD R3.xy, fragment.position, c[7];\n"
+    "MUL R0.w, R0.x, c[1].x;\n"
+    "RSQ R0.z, R0.z;\n"
+    "RCP R0.x, R0.z;\n"
+    "RCP R0.z, R0.w;\n"
+    "ADD R0.x, -R0.y, R0;\n"
+    "MUL R0.z, R0.x, R0;\n"
+    "TEX R1, R0.z, texture[2], 1D;\n"
+    "MUL R0.xy, fragment.position, c[6];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "ADD R2, R1, R0;\n"
+    "MAD R2, -R1, R0, R2;\n"
+    "MUL R3.xy, R3, c[5];\n"
+    "TEX R1, R3, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[8];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_OVERLAY =
+    "!!ARBfp1.0\n"
+    "PARAM c[10] = { program.local[0..8],\n"
+    "		{ 2, 4, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "MUL R0.xyz, fragment.position.y, c[3];\n"
+    "MAD R0.xyz, fragment.position.x, c[2], R0;\n"
+    "ADD R0.xyz, R0, c[4];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, R0.xyxy;\n"
+    "ADD R0.z, R0, R0.w;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.y, R0.x, c[9].x;\n"
+    "MOV R0.x, c[9];\n"
+    "MUL R0.z, -R0, c[1].x;\n"
+    "MUL R0.z, R0, c[9].y;\n"
+    "MAD R0.z, R0.y, R0.y, -R0;\n"
+    "MUL R1.xy, fragment.position, c[6];\n"
+    "TEX R1, R1, texture[0], 2D;\n"
+    "MUL R0.w, R0.x, c[1].x;\n"
+    "RSQ R0.z, R0.z;\n"
+    "RCP R0.x, R0.z;\n"
+    "ADD R2.w, -R1, c[9].z;\n"
+    "RCP R0.z, R0.w;\n"
+    "ADD R0.x, -R0.y, R0;\n"
+    "MUL R0.x, R0, R0.z;\n"
+    "TEX R0, R0, texture[2], 1D;\n"
+    "ADD R3.xyz, R0.w, -R0;\n"
+    "ADD R2.xyz, R1.w, -R1;\n"
+    "MUL R2.xyz, R2, R3;\n"
+    "MUL R2.xyz, R2, c[9].x;\n"
+    "MAD R2.xyz, R0.w, R1.w, -R2;\n"
+    "MUL R4.xyz, R0, R2.w;\n"
+    "MUL R3.xyz, R0, R1;\n"
+    "MAD R0.xyz, R0, R2.w, R2;\n"
+    "ADD R2.x, -R0.w, c[9].z;\n"
+    "MAD R3.xyz, R3, c[9].x, R4;\n"
+    "MAD R3.xyz, R1, R2.x, R3;\n"
+    "MAD R0.xyz, R1, R2.x, R0;\n"
+    "MUL R2.xyz, R1, c[9].x;\n"
+    "ADD R0.xyz, R0, -R3;\n"
+    "SGE R2.xyz, R2, R1.w;\n"
+    "MAD R2.xyz, R2, R0, R3;\n"
+    "ADD R0.z, R0.w, R1.w;\n"
+    "MAD R2.w, -R0, R1, R0.z;\n"
+    "ADD R0.xy, fragment.position, c[7];\n"
+    "MUL R0.xy, R0, c[5];\n"
+    "TEX R0, R0, texture[1], 2D;\n"
+    "ADD R2, R2, -R1;\n"
+    "DP4 R0.x, R0, c[8];\n"
+    "MAD result.color, R0.x, R2, R1;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_DARKEN =
+    "!!ARBfp1.0\n"
+    "PARAM c[10] = { program.local[0..8],\n"
+    "		{ 2, 4, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[3];\n"
+    "MAD R0.xyz, fragment.position.x, c[2], R0;\n"
+    "ADD R0.xyz, R0, c[4];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, R0.xyxy;\n"
+    "ADD R0.z, R0, R0.w;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.z, -R0, c[1].x;\n"
+    "MUL R0.y, R0.x, c[9].x;\n"
+    "MUL R0.z, R0, c[9].y;\n"
+    "MAD R0.x, R0.y, R0.y, -R0.z;\n"
+    "RSQ R0.z, R0.x;\n"
+    "MOV R0.x, c[9];\n"
+    "MUL R0.x, R0, c[1];\n"
+    "RCP R0.z, R0.z;\n"
+    "ADD R0.z, -R0.y, R0;\n"
+    "RCP R0.w, R0.x;\n"
+    "MUL R1.x, R0.z, R0.w;\n"
+    "MUL R0.xy, fragment.position, c[6];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "TEX R1, R1, texture[2], 1D;\n"
+    "MUL R3.xyz, R1.w, R0;\n"
+    "MUL R2.xyz, R1, R0.w;\n"
+    "MIN R2.xyz, R2, R3;\n"
+    "ADD R2.w, -R0, c[9].z;\n"
+    "MAD R1.xyz, R1, R2.w, R2;\n"
+    "ADD R2.x, -R1.w, c[9].z;\n"
+    "MAD R2.xyz, R0, R2.x, R1;\n"
+    "ADD R1.z, R1.w, R0.w;\n"
+    "MAD R2.w, -R1, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[7];\n"
+    "MUL R1.xy, R1, c[5];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[8];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_LIGHTEN =
+    "!!ARBfp1.0\n"
+    "PARAM c[10] = { program.local[0..8],\n"
+    "		{ 2, 4, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[3];\n"
+    "MAD R0.xyz, fragment.position.x, c[2], R0;\n"
+    "ADD R0.xyz, R0, c[4];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, R0.xyxy;\n"
+    "ADD R0.z, R0, R0.w;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.z, -R0, c[1].x;\n"
+    "MUL R0.y, R0.x, c[9].x;\n"
+    "MUL R0.z, R0, c[9].y;\n"
+    "MAD R0.x, R0.y, R0.y, -R0.z;\n"
+    "RSQ R0.z, R0.x;\n"
+    "MOV R0.x, c[9];\n"
+    "MUL R0.x, R0, c[1];\n"
+    "RCP R0.z, R0.z;\n"
+    "ADD R0.z, -R0.y, R0;\n"
+    "RCP R0.w, R0.x;\n"
+    "MUL R1.x, R0.z, R0.w;\n"
+    "MUL R0.xy, fragment.position, c[6];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "TEX R1, R1, texture[2], 1D;\n"
+    "MUL R3.xyz, R1.w, R0;\n"
+    "MUL R2.xyz, R1, R0.w;\n"
+    "MAX R2.xyz, R2, R3;\n"
+    "ADD R2.w, -R0, c[9].z;\n"
+    "MAD R1.xyz, R1, R2.w, R2;\n"
+    "ADD R2.x, -R1.w, c[9].z;\n"
+    "MAD R2.xyz, R0, R2.x, R1;\n"
+    "ADD R1.z, R1.w, R0.w;\n"
+    "MAD R2.w, -R1, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[7];\n"
+    "MUL R1.xy, R1, c[5];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[8];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_COLORDODGE =
+    "!!ARBfp1.0\n"
+    "PARAM c[10] = { program.local[0..8],\n"
+    "		{ 2, 4, 1, 1e-006 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "MUL R0.xyz, fragment.position.y, c[3];\n"
+    "MAD R0.xyz, fragment.position.x, c[2], R0;\n"
+    "ADD R0.xyz, R0, c[4];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, R0.xyxy;\n"
+    "ADD R0.z, R0, R0.w;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.y, R0.x, c[9].x;\n"
+    "MOV R0.x, c[9];\n"
+    "MUL R0.z, -R0, c[1].x;\n"
+    "MUL R0.z, R0, c[9].y;\n"
+    "MAD R0.z, R0.y, R0.y, -R0;\n"
+    "MUL R0.w, R0.x, c[1].x;\n"
+    "RSQ R0.z, R0.z;\n"
+    "RCP R0.x, R0.z;\n"
+    "RCP R0.z, R0.w;\n"
+    "ADD R0.x, -R0.y, R0;\n"
+    "MUL R0.x, R0, R0.z;\n"
+    "TEX R0, R0, texture[2], 1D;\n"
+    "MAX R1.x, R0.w, c[9].w;\n"
+    "RCP R1.x, R1.x;\n"
+    "MAD R1.xyz, -R0, R1.x, c[9].z;\n"
+    "MAX R2.xyz, R1, c[9].w;\n"
+    "MUL R1.xy, fragment.position, c[6];\n"
+    "TEX R1, R1, texture[0], 2D;\n"
+    "ADD R2.w, -R0, c[9].z;\n"
+    "MUL R3.xyz, R1, R2.w;\n"
+    "ADD R2.w, -R1, c[9].z;\n"
+    "MAD R4.xyz, R0, R2.w, R3;\n"
+    "MUL R3.xyz, R0.w, R1;\n"
+    "MUL R2.w, R0, R1;\n"
+    "MAD R0.xyz, R0, R1.w, R3;\n"
+    "SGE R0.xyz, R0, R2.w;\n"
+    "RCP R2.x, R2.x;\n"
+    "RCP R2.y, R2.y;\n"
+    "RCP R2.z, R2.z;\n"
+    "MAD R2.xyz, R3, R2, R4;\n"
+    "MAD R4.xyz, R0.w, R1.w, R4;\n"
+    "ADD R4.xyz, R4, -R2;\n"
+    "MAD R2.xyz, R0, R4, R2;\n"
+    "ADD R0.z, R0.w, R1.w;\n"
+    "MAD R2.w, -R0, R1, R0.z;\n"
+    "ADD R0.xy, fragment.position, c[7];\n"
+    "MUL R0.xy, R0, c[5];\n"
+    "TEX R0, R0, texture[1], 2D;\n"
+    "ADD R2, R2, -R1;\n"
+    "DP4 R0.x, R0, c[8];\n"
+    "MAD result.color, R0.x, R2, R1;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_COLORBURN =
+    "!!ARBfp1.0\n"
+    "PARAM c[10] = { program.local[0..8],\n"
+    "		{ 2, 4, 1, 9.9999997e-006 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "TEMP R5;\n"
+    "MUL R0.xyz, fragment.position.y, c[3];\n"
+    "MAD R0.xyz, fragment.position.x, c[2], R0;\n"
+    "ADD R0.xyz, R0, c[4];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, R0.xyxy;\n"
+    "ADD R0.z, R0, R0.w;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.z, -R0, c[1].x;\n"
+    "MUL R0.y, R0.x, c[9].x;\n"
+    "MUL R0.z, R0, c[9].y;\n"
+    "MAD R0.x, R0.y, R0.y, -R0.z;\n"
+    "RSQ R0.z, R0.x;\n"
+    "MOV R0.x, c[9];\n"
+    "MUL R0.w, R0.x, c[1].x;\n"
+    "RCP R0.z, R0.z;\n"
+    "ADD R0.x, -R0.y, R0.z;\n"
+    "RCP R0.y, R0.w;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[6].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "MUL R0.x, R0, R0.y;\n"
+    "TEX R0, R0, texture[2], 1D;\n"
+    "MUL R2.xyz, R0.w, R1;\n"
+    "MAD R3.xyz, R0, R1.w, R2;\n"
+    "MAD R2.xyz, -R0.w, R1.w, R3;\n"
+    "MUL R4.xyz, R0.w, R2;\n"
+    "MAX R2.xyz, R0, c[9].w;\n"
+    "ADD R2.w, -R1, c[9].z;\n"
+    "MUL R5.xyz, R0, R2.w;\n"
+    "ADD R3.w, -R0, c[9].z;\n"
+    "RCP R2.x, R2.x;\n"
+    "RCP R2.y, R2.y;\n"
+    "RCP R2.z, R2.z;\n"
+    "MAD R2.xyz, R4, R2, R5;\n"
+    "MUL R4.xyz, R1, R3.w;\n"
+    "MAD R0.xyz, R0, R2.w, R4;\n"
+    "MUL R2.w, R0, R1;\n"
+    "MAD R2.xyz, R1, R3.w, R2;\n"
+    "ADD R2.xyz, R2, -R0;\n"
+    "SGE R3.xyz, R3, R2.w;\n"
+    "MAD R2.xyz, R3, R2, R0;\n"
+    "ADD R0.z, R0.w, R1.w;\n"
+    "MAD R2.w, -R0, R1, R0.z;\n"
+    "ADD R0.xy, fragment.position, c[7];\n"
+    "MUL R0.xy, R0, c[5];\n"
+    "TEX R0, R0, texture[1], 2D;\n"
+    "ADD R2, R2, -R1;\n"
+    "DP4 R0.x, R0, c[8];\n"
+    "MAD result.color, R0.x, R2, R1;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_HARDLIGHT =
+    "!!ARBfp1.0\n"
+    "PARAM c[10] = { program.local[0..8],\n"
+    "		{ 2, 4, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "MUL R0.xyz, fragment.position.y, c[3];\n"
+    "MAD R0.xyz, fragment.position.x, c[2], R0;\n"
+    "ADD R0.xyz, R0, c[4];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, R0.xyxy;\n"
+    "ADD R0.z, R0, R0.w;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.y, R0.x, c[9].x;\n"
+    "MOV R0.x, c[9];\n"
+    "MUL R0.z, -R0, c[1].x;\n"
+    "MUL R0.z, R0, c[9].y;\n"
+    "MAD R0.z, R0.y, R0.y, -R0;\n"
+    "MUL R1.xy, fragment.position, c[6];\n"
+    "TEX R1, R1, texture[0], 2D;\n"
+    "MUL R0.w, R0.x, c[1].x;\n"
+    "RSQ R0.z, R0.z;\n"
+    "RCP R0.x, R0.z;\n"
+    "ADD R2.w, -R1, c[9].z;\n"
+    "RCP R0.z, R0.w;\n"
+    "ADD R0.x, -R0.y, R0;\n"
+    "MUL R0.x, R0, R0.z;\n"
+    "TEX R0, R0, texture[2], 1D;\n"
+    "ADD R3.xyz, R0.w, -R0;\n"
+    "ADD R2.xyz, R1.w, -R1;\n"
+    "MUL R2.xyz, R2, R3;\n"
+    "MUL R2.xyz, R2, c[9].x;\n"
+    "MAD R2.xyz, R0.w, R1.w, -R2;\n"
+    "MUL R4.xyz, R0, R2.w;\n"
+    "MAD R2.xyz, R0, R2.w, R2;\n"
+    "MUL R3.xyz, R0, R1;\n"
+    "ADD R2.w, -R0, c[9].z;\n"
+    "MAD R3.xyz, R3, c[9].x, R4;\n"
+    "MUL R0.xyz, R0, c[9].x;\n"
+    "SGE R0.xyz, R0, R0.w;\n"
+    "MAD R3.xyz, R1, R2.w, R3;\n"
+    "MAD R2.xyz, R1, R2.w, R2;\n"
+    "ADD R2.xyz, R2, -R3;\n"
+    "MAD R2.xyz, R0, R2, R3;\n"
+    "ADD R0.z, R0.w, R1.w;\n"
+    "MAD R2.w, -R0, R1, R0.z;\n"
+    "ADD R0.xy, fragment.position, c[7];\n"
+    "MUL R0.xy, R0, c[5];\n"
+    "TEX R0, R0, texture[1], 2D;\n"
+    "ADD R2, R2, -R1;\n"
+    "DP4 R0.x, R0, c[8];\n"
+    "MAD result.color, R0.x, R2, R1;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_SOFTLIGHT =
+    "!!ARBfp1.0\n"
+    "PARAM c[11] = { program.local[0..8],\n"
+    "		{ 2, 4, 1, 9.9999997e-006 },\n"
+    "		{ 16, 12, 3 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "TEMP R5;\n"
+    "TEMP R6;\n"
+    "MUL R0.xyz, fragment.position.y, c[3];\n"
+    "MAD R0.xyz, fragment.position.x, c[2], R0;\n"
+    "ADD R0.xyz, R0, c[4];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, R0.xyxy;\n"
+    "ADD R0.z, R0, R0.w;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.z, -R0, c[1].x;\n"
+    "MUL R0.y, R0.z, c[9];\n"
+    "MUL R0.x, R0, c[9];\n"
+    "MUL R0.zw, fragment.position.xyxy, c[6].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "MAD R0.y, R0.x, R0.x, -R0;\n"
+    "RSQ R0.y, R0.y;\n"
+    "RCP R0.y, R0.y;\n"
+    "ADD R0.y, -R0.x, R0;\n"
+    "MOV R0.x, c[9];\n"
+    "MUL R0.x, R0, c[1];\n"
+    "MAX R0.z, R1.w, c[9].w;\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R3.xyz, R1, R0.z;\n"
+    "MAD R4.xyz, R3, c[10].x, -c[10].y;\n"
+    "RCP R0.x, R0.x;\n"
+    "MUL R0.x, R0.y, R0;\n"
+    "TEX R0, R0, texture[2], 1D;\n"
+    "MAD R2.xyz, R0, c[9].x, -R0.w;\n"
+    "MAD R4.xyz, R3, R4, c[10].z;\n"
+    "MUL R5.xyz, R1.w, R2;\n"
+    "MUL R6.xyz, R5, R4;\n"
+    "RSQ R2.w, R3.x;\n"
+    "RCP R4.x, R2.w;\n"
+    "RSQ R2.w, R3.y;\n"
+    "RSQ R3.w, R3.z;\n"
+    "RCP R4.y, R2.w;\n"
+    "RCP R4.z, R3.w;\n"
+    "ADD R4.xyz, -R3, R4;\n"
+    "MUL R6.xyz, R3, R6;\n"
+    "MUL R4.xyz, R5, R4;\n"
+    "ADD R3.xyz, -R3, c[9].z;\n"
+    "MAD R2.xyz, R2, R3, R0.w;\n"
+    "MUL R3.xyz, R0, c[9].x;\n"
+    "MAD R5.xyz, R0.w, R1, R6;\n"
+    "MAD R4.xyz, R0.w, R1, R4;\n"
+    "ADD R6.xyz, R4, -R5;\n"
+    "MUL R4.xyz, R1, c[9].y;\n"
+    "SGE R4.xyz, R4, R1.w;\n"
+    "MAD R4.xyz, R4, R6, R5;\n"
+    "MAD R4.xyz, -R1, R2, R4;\n"
+    "SGE R3.xyz, R3, R0.w;\n"
+    "MUL R2.xyz, R1, R2;\n"
+    "ADD R2.w, -R1, c[9].z;\n"
+    "MAD R2.xyz, R3, R4, R2;\n"
+    "MAD R2.xyz, R0, R2.w, R2;\n"
+    "ADD R0.x, -R0.w, c[9].z;\n"
+    "MAD R2.xyz, R1, R0.x, R2;\n"
+    "ADD R0.z, R0.w, R1.w;\n"
+    "MAD R2.w, -R0, R1, R0.z;\n"
+    "ADD R0.xy, fragment.position, c[7];\n"
+    "MUL R0.xy, R0, c[5];\n"
+    "TEX R0, R0, texture[1], 2D;\n"
+    "ADD R2, R2, -R1;\n"
+    "DP4 R0.x, R0, c[8];\n"
+    "MAD result.color, R0.x, R2, R1;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_DIFFERENCE =
+    "!!ARBfp1.0\n"
+    "PARAM c[10] = { program.local[0..8],\n"
+    "		{ 2, 4 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[3];\n"
+    "MAD R0.xyz, fragment.position.x, c[2], R0;\n"
+    "ADD R0.xyz, R0, c[4];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, R0.xyxy;\n"
+    "ADD R0.z, R0, R0.w;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.z, -R0, c[1].x;\n"
+    "MUL R0.y, R0.x, c[9].x;\n"
+    "MUL R0.z, R0, c[9].y;\n"
+    "MAD R0.x, R0.y, R0.y, -R0.z;\n"
+    "RSQ R0.z, R0.x;\n"
+    "MOV R0.x, c[9];\n"
+    "MUL R0.x, R0, c[1];\n"
+    "RCP R0.z, R0.z;\n"
+    "ADD R0.z, -R0.y, R0;\n"
+    "RCP R0.w, R0.x;\n"
+    "MUL R1.x, R0.z, R0.w;\n"
+    "MUL R0.xy, fragment.position, c[6];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "TEX R1, R1, texture[2], 1D;\n"
+    "ADD R2.xyz, R1, R0;\n"
+    "MUL R3.xyz, R1.w, R0;\n"
+    "MUL R1.xyz, R1, R0.w;\n"
+    "MIN R1.xyz, R1, R3;\n"
+    "MAD R2.xyz, -R1, c[9].x, R2;\n"
+    "ADD R1.z, R1.w, R0.w;\n"
+    "MAD R2.w, -R1, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[7];\n"
+    "MUL R1.xy, R1, c[5];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[8];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_EXCLUSION =
+    "!!ARBfp1.0\n"
+    "PARAM c[10] = { program.local[0..8],\n"
+    "		{ 2, 4, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[3];\n"
+    "MAD R0.xyz, fragment.position.x, c[2], R0;\n"
+    "ADD R0.xyz, R0, c[4];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, R0.xyxy;\n"
+    "ADD R0.z, R0, R0.w;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.z, -R0, c[1].x;\n"
+    "MUL R0.y, R0.x, c[9].x;\n"
+    "MUL R0.z, R0, c[9].y;\n"
+    "MAD R0.x, R0.y, R0.y, -R0.z;\n"
+    "RSQ R0.z, R0.x;\n"
+    "MOV R0.x, c[9];\n"
+    "MUL R0.x, R0, c[1];\n"
+    "RCP R0.z, R0.z;\n"
+    "ADD R0.z, -R0.y, R0;\n"
+    "RCP R0.w, R0.x;\n"
+    "MUL R1.x, R0.z, R0.w;\n"
+    "MUL R0.xy, fragment.position, c[6];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "TEX R1, R1, texture[2], 1D;\n"
+    "MUL R2.xyz, R1.w, R0;\n"
+    "MAD R3.xyz, R1, R0.w, R2;\n"
+    "MUL R2.xyz, R1, R0;\n"
+    "MAD R2.xyz, -R2, c[9].x, R3;\n"
+    "ADD R2.w, -R0, c[9].z;\n"
+    "MAD R1.xyz, R1, R2.w, R2;\n"
+    "ADD R2.x, -R1.w, c[9].z;\n"
+    "MAD R2.xyz, R0, R2.x, R1;\n"
+    "ADD R1.z, R1.w, R0.w;\n"
+    "MAD R2.w, -R1, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[7];\n"
+    "MUL R1.xy, R1, c[5];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[8];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_SIMPLE_PORTER_DUFF_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[9] = { program.local[0..7],\n"
+    "		{ 2, 4, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[3];\n"
+    "MAD R0.xyz, fragment.position.x, c[2], R0;\n"
+    "ADD R0.xyz, R0, c[4];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, R0.xyxy;\n"
+    "ADD R0.z, R0, R0.w;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.z, -R0, c[1].x;\n"
+    "MUL R0.y, R0.x, c[8].x;\n"
+    "MUL R0.z, R0, c[8].y;\n"
+    "MAD R0.x, R0.y, R0.y, -R0.z;\n"
+    "RSQ R0.x, R0.x;\n"
+    "RCP R0.z, R0.x;\n"
+    "ADD R0.y, -R0, R0.z;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[7].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "MUL R2.xyz, R1, c[5].y;\n"
+    "MOV R0.x, c[8];\n"
+    "MUL R0.x, R0, c[1];\n"
+    "RCP R0.x, R0.x;\n"
+    "MUL R0.x, R0.y, R0;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "MUL R3.xyz, R0.w, R2;\n"
+    "MUL R2.xyz, R0, c[5].x;\n"
+    "MAD R2.xyz, R1.w, R2, R3;\n"
+    "ADD R2.w, -R1, c[8].z;\n"
+    "MUL R0.xyz, R0, c[6].y;\n"
+    "MAD R0.xyz, R2.w, R0, R2;\n"
+    "ADD R2.x, -R0.w, c[8].z;\n"
+    "MUL R1.xyz, R1, c[6].z;\n"
+    "MAD result.color.xyz, R2.x, R1, R0;\n"
+    "MUL R0.x, R0.w, R1.w;\n"
+    "MUL R0.z, R1.w, R2.x;\n"
+    "MUL R0.y, R0.w, R2.w;\n"
+    "DP3 result.color.w, R0, c[6];\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_MULTIPLY_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[7] = { program.local[0..5],\n"
+    "		{ 2, 4, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "MUL R0.xyz, fragment.position.y, c[3];\n"
+    "MAD R0.xyz, fragment.position.x, c[2], R0;\n"
+    "ADD R0.xyz, R0, c[4];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, R0.xyxy;\n"
+    "ADD R0.z, R0, R0.w;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.z, -R0, c[1].x;\n"
+    "MUL R0.y, R0.x, c[6].x;\n"
+    "MUL R0.z, R0, c[6].y;\n"
+    "MAD R0.x, R0.y, R0.y, -R0.z;\n"
+    "RSQ R0.x, R0.x;\n"
+    "RCP R0.z, R0.x;\n"
+    "ADD R0.y, -R0, R0.z;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[5].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "MOV R0.x, c[6];\n"
+    "MUL R0.x, R0, c[1];\n"
+    "RCP R0.x, R0.x;\n"
+    "MUL R0.x, R0.y, R0;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "ADD R2.x, -R1.w, c[6].z;\n"
+    "MUL R2.xyz, R0, R2.x;\n"
+    "MAD R0.xyz, R0, R1, R2;\n"
+    "ADD R2.x, R0.w, R1.w;\n"
+    "ADD R2.y, -R0.w, c[6].z;\n"
+    "MAD result.color.xyz, R1, R2.y, R0;\n"
+    "MAD result.color.w, -R0, R1, R2.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_SCREEN_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[7] = { program.local[0..5],\n"
+    "		{ 2, 4 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "MUL R0.xyz, fragment.position.y, c[3];\n"
+    "MAD R0.xyz, fragment.position.x, c[2], R0;\n"
+    "ADD R0.xyz, R0, c[4];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, R0.xyxy;\n"
+    "ADD R0.z, R0, R0.w;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.z, -R0, c[1].x;\n"
+    "MUL R0.y, R0.x, c[6].x;\n"
+    "MUL R0.z, R0, c[6].y;\n"
+    "MAD R0.x, R0.y, R0.y, -R0.z;\n"
+    "RSQ R0.z, R0.x;\n"
+    "MOV R0.x, c[6];\n"
+    "MUL R0.w, R0.x, c[1].x;\n"
+    "RCP R0.z, R0.z;\n"
+    "ADD R0.x, -R0.y, R0.z;\n"
+    "RCP R0.y, R0.w;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[5].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "MUL R0.x, R0, R0.y;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "ADD R2, R0, R1;\n"
+    "MAD result.color, -R0, R1, R2;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_OVERLAY_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[7] = { program.local[0..5],\n"
+    "		{ 2, 4, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[3];\n"
+    "MAD R0.xyz, fragment.position.x, c[2], R0;\n"
+    "ADD R0.xyz, R0, c[4];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, R0.xyxy;\n"
+    "ADD R0.z, R0, R0.w;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.y, R0.x, c[6].x;\n"
+    "MOV R0.x, c[6];\n"
+    "MUL R0.z, -R0, c[1].x;\n"
+    "MUL R0.z, R0, c[6].y;\n"
+    "MAD R0.z, R0.y, R0.y, -R0;\n"
+    "MUL R1.xy, fragment.position, c[5];\n"
+    "TEX R1, R1, texture[0], 2D;\n"
+    "MUL R0.w, R0.x, c[1].x;\n"
+    "RSQ R0.z, R0.z;\n"
+    "RCP R0.x, R0.z;\n"
+    "ADD R2.w, -R1, c[6].z;\n"
+    "RCP R0.z, R0.w;\n"
+    "ADD R0.x, -R0.y, R0;\n"
+    "MUL R0.x, R0, R0.z;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "ADD R3.xyz, R0.w, -R0;\n"
+    "ADD R2.xyz, R1.w, -R1;\n"
+    "MUL R2.xyz, R2, R3;\n"
+    "MUL R2.xyz, R2, c[6].x;\n"
+    "MAD R2.xyz, R0.w, R1.w, -R2;\n"
+    "MAD R2.xyz, R0, R2.w, R2;\n"
+    "MUL R3.xyz, R0, R2.w;\n"
+    "MUL R0.xyz, R0, R1;\n"
+    "ADD R2.w, -R0, c[6].z;\n"
+    "MAD R0.xyz, R0, c[6].x, R3;\n"
+    "MAD R0.xyz, R1, R2.w, R0;\n"
+    "MAD R2.xyz, R1, R2.w, R2;\n"
+    "MUL R1.xyz, R1, c[6].x;\n"
+    "ADD R2.w, R0, R1;\n"
+    "ADD R2.xyz, R2, -R0;\n"
+    "SGE R1.xyz, R1, R1.w;\n"
+    "MAD result.color.xyz, R1, R2, R0;\n"
+    "MAD result.color.w, -R0, R1, R2;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_DARKEN_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[7] = { program.local[0..5],\n"
+    "		{ 2, 4, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[3];\n"
+    "MAD R0.xyz, fragment.position.x, c[2], R0;\n"
+    "ADD R0.xyz, R0, c[4];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, R0.xyxy;\n"
+    "ADD R0.z, R0, R0.w;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.z, -R0, c[1].x;\n"
+    "MUL R0.y, R0.x, c[6].x;\n"
+    "MUL R0.z, R0, c[6].y;\n"
+    "MAD R0.x, R0.y, R0.y, -R0.z;\n"
+    "RSQ R0.z, R0.x;\n"
+    "MOV R0.x, c[6];\n"
+    "MUL R0.w, R0.x, c[1].x;\n"
+    "RCP R0.z, R0.z;\n"
+    "ADD R0.x, -R0.y, R0.z;\n"
+    "RCP R0.y, R0.w;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[5].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "MUL R0.x, R0, R0.y;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "MUL R2.xyz, R0, R1.w;\n"
+    "MUL R3.xyz, R0.w, R1;\n"
+    "MIN R2.xyz, R2, R3;\n"
+    "ADD R2.w, -R1, c[6].z;\n"
+    "MAD R0.xyz, R0, R2.w, R2;\n"
+    "ADD R2.x, R0.w, R1.w;\n"
+    "ADD R2.y, -R0.w, c[6].z;\n"
+    "MAD result.color.xyz, R1, R2.y, R0;\n"
+    "MAD result.color.w, -R0, R1, R2.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_LIGHTEN_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[7] = { program.local[0..5],\n"
+    "		{ 2, 4, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[3];\n"
+    "MAD R0.xyz, fragment.position.x, c[2], R0;\n"
+    "ADD R0.xyz, R0, c[4];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, R0.xyxy;\n"
+    "ADD R0.z, R0, R0.w;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.z, -R0, c[1].x;\n"
+    "MUL R0.y, R0.x, c[6].x;\n"
+    "MUL R0.z, R0, c[6].y;\n"
+    "MAD R0.x, R0.y, R0.y, -R0.z;\n"
+    "RSQ R0.z, R0.x;\n"
+    "MOV R0.x, c[6];\n"
+    "MUL R0.w, R0.x, c[1].x;\n"
+    "RCP R0.z, R0.z;\n"
+    "ADD R0.x, -R0.y, R0.z;\n"
+    "RCP R0.y, R0.w;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[5].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "MUL R0.x, R0, R0.y;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "MUL R2.xyz, R0, R1.w;\n"
+    "MUL R3.xyz, R0.w, R1;\n"
+    "MAX R2.xyz, R2, R3;\n"
+    "ADD R2.w, -R1, c[6].z;\n"
+    "MAD R0.xyz, R0, R2.w, R2;\n"
+    "ADD R2.x, R0.w, R1.w;\n"
+    "ADD R2.y, -R0.w, c[6].z;\n"
+    "MAD result.color.xyz, R1, R2.y, R0;\n"
+    "MAD result.color.w, -R0, R1, R2.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_COLORDODGE_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[7] = { program.local[0..5],\n"
+    "		{ 2, 4, 1, 1e-006 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[3];\n"
+    "MAD R0.xyz, fragment.position.x, c[2], R0;\n"
+    "ADD R0.xyz, R0, c[4];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, R0.xyxy;\n"
+    "ADD R0.z, R0, R0.w;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.y, R0.x, c[6].x;\n"
+    "MOV R0.x, c[6];\n"
+    "MUL R0.z, -R0, c[1].x;\n"
+    "MUL R0.z, R0, c[6].y;\n"
+    "MAD R0.z, R0.y, R0.y, -R0;\n"
+    "MUL R0.w, R0.x, c[1].x;\n"
+    "RSQ R0.z, R0.z;\n"
+    "RCP R0.x, R0.z;\n"
+    "RCP R0.z, R0.w;\n"
+    "ADD R0.x, -R0.y, R0;\n"
+    "MUL R0.x, R0, R0.z;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "MAX R1.x, R0.w, c[6].w;\n"
+    "RCP R1.x, R1.x;\n"
+    "MAD R1.xyz, -R0, R1.x, c[6].z;\n"
+    "MAX R2.xyz, R1, c[6].w;\n"
+    "MUL R1.xy, fragment.position, c[5];\n"
+    "TEX R1, R1, texture[0], 2D;\n"
+    "ADD R2.w, -R0, c[6].z;\n"
+    "MUL R3.xyz, R1, R2.w;\n"
+    "ADD R2.w, -R1, c[6].z;\n"
+    "MAD R3.xyz, R0, R2.w, R3;\n"
+    "MUL R1.xyz, R0.w, R1;\n"
+    "MAD R0.xyz, R0, R1.w, R1;\n"
+    "MUL R2.w, R0, R1;\n"
+    "RCP R2.x, R2.x;\n"
+    "RCP R2.y, R2.y;\n"
+    "RCP R2.z, R2.z;\n"
+    "MAD R2.xyz, R1, R2, R3;\n"
+    "MAD R3.xyz, R0.w, R1.w, R3;\n"
+    "ADD R1.x, R0.w, R1.w;\n"
+    "ADD R3.xyz, R3, -R2;\n"
+    "SGE R0.xyz, R0, R2.w;\n"
+    "MAD result.color.xyz, R0, R3, R2;\n"
+    "MAD result.color.w, -R0, R1, R1.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_COLORBURN_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[7] = { program.local[0..5],\n"
+    "		{ 2, 4, 1, 9.9999997e-006 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "TEMP R5;\n"
+    "MUL R0.xyz, fragment.position.y, c[3];\n"
+    "MAD R0.xyz, fragment.position.x, c[2], R0;\n"
+    "ADD R0.xyz, R0, c[4];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, R0.xyxy;\n"
+    "ADD R0.z, R0, R0.w;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.z, -R0, c[1].x;\n"
+    "MUL R0.y, R0.x, c[6].x;\n"
+    "MUL R0.z, R0, c[6].y;\n"
+    "MAD R0.x, R0.y, R0.y, -R0.z;\n"
+    "RSQ R0.z, R0.x;\n"
+    "MOV R0.x, c[6];\n"
+    "MUL R0.w, R0.x, c[1].x;\n"
+    "RCP R0.z, R0.z;\n"
+    "ADD R0.x, -R0.y, R0.z;\n"
+    "RCP R0.y, R0.w;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[5].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "MUL R0.x, R0, R0.y;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "MUL R2.xyz, R0.w, R1;\n"
+    "MAD R3.xyz, R0, R1.w, R2;\n"
+    "ADD R2.w, -R1, c[6].z;\n"
+    "MAD R2.xyz, -R0.w, R1.w, R3;\n"
+    "MUL R4.xyz, R0.w, R2;\n"
+    "MAX R2.xyz, R0, c[6].w;\n"
+    "MUL R5.xyz, R0, R2.w;\n"
+    "ADD R3.w, -R0, c[6].z;\n"
+    "RCP R2.x, R2.x;\n"
+    "RCP R2.y, R2.y;\n"
+    "RCP R2.z, R2.z;\n"
+    "MAD R2.xyz, R4, R2, R5;\n"
+    "MUL R4.xyz, R1, R3.w;\n"
+    "MAD R1.xyz, R1, R3.w, R2;\n"
+    "MAD R0.xyz, R0, R2.w, R4;\n"
+    "MUL R2.x, R0.w, R1.w;\n"
+    "ADD R2.w, R0, R1;\n"
+    "ADD R1.xyz, R1, -R0;\n"
+    "SGE R2.xyz, R3, R2.x;\n"
+    "MAD result.color.xyz, R2, R1, R0;\n"
+    "MAD result.color.w, -R0, R1, R2;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_HARDLIGHT_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[7] = { program.local[0..5],\n"
+    "		{ 2, 4, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "MUL R0.xyz, fragment.position.y, c[3];\n"
+    "MAD R0.xyz, fragment.position.x, c[2], R0;\n"
+    "ADD R0.xyz, R0, c[4];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, R0.xyxy;\n"
+    "ADD R0.z, R0, R0.w;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.y, R0.x, c[6].x;\n"
+    "MOV R0.x, c[6];\n"
+    "MUL R0.z, -R0, c[1].x;\n"
+    "MUL R0.z, R0, c[6].y;\n"
+    "MAD R0.z, R0.y, R0.y, -R0;\n"
+    "MUL R1.xy, fragment.position, c[5];\n"
+    "TEX R1, R1, texture[0], 2D;\n"
+    "MUL R0.w, R0.x, c[1].x;\n"
+    "RSQ R0.z, R0.z;\n"
+    "RCP R0.x, R0.z;\n"
+    "ADD R2.w, -R1, c[6].z;\n"
+    "RCP R0.z, R0.w;\n"
+    "ADD R0.x, -R0.y, R0;\n"
+    "MUL R0.x, R0, R0.z;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "ADD R3.xyz, R0.w, -R0;\n"
+    "ADD R2.xyz, R1.w, -R1;\n"
+    "MUL R2.xyz, R2, R3;\n"
+    "MUL R2.xyz, R2, c[6].x;\n"
+    "MAD R2.xyz, R0.w, R1.w, -R2;\n"
+    "MUL R4.xyz, R0, R2.w;\n"
+    "MUL R3.xyz, R0, R1;\n"
+    "MAD R2.xyz, R0, R2.w, R2;\n"
+    "ADD R2.w, -R0, c[6].z;\n"
+    "MUL R0.xyz, R0, c[6].x;\n"
+    "MAD R2.xyz, R1, R2.w, R2;\n"
+    "MAD R3.xyz, R3, c[6].x, R4;\n"
+    "MAD R1.xyz, R1, R2.w, R3;\n"
+    "ADD R2.w, R0, R1;\n"
+    "ADD R2.xyz, R2, -R1;\n"
+    "SGE R0.xyz, R0, R0.w;\n"
+    "MAD result.color.xyz, R0, R2, R1;\n"
+    "MAD result.color.w, -R0, R1, R2;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_SOFTLIGHT_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[8] = { program.local[0..5],\n"
+    "		{ 2, 4, 1, 9.9999997e-006 },\n"
+    "		{ 16, 12, 3 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "TEMP R5;\n"
+    "TEMP R6;\n"
+    "MUL R0.xyz, fragment.position.y, c[3];\n"
+    "MAD R0.xyz, fragment.position.x, c[2], R0;\n"
+    "ADD R0.xyz, R0, c[4];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, R0.xyxy;\n"
+    "ADD R0.z, R0, R0.w;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.z, -R0, c[1].x;\n"
+    "MUL R0.y, R0.z, c[6];\n"
+    "MUL R0.x, R0, c[6];\n"
+    "MUL R0.zw, fragment.position.xyxy, c[5].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "MAD R0.y, R0.x, R0.x, -R0;\n"
+    "RSQ R0.y, R0.y;\n"
+    "RCP R0.y, R0.y;\n"
+    "ADD R0.y, -R0.x, R0;\n"
+    "MOV R0.x, c[6];\n"
+    "MUL R0.x, R0, c[1];\n"
+    "MAX R0.z, R1.w, c[6].w;\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R3.xyz, R1, R0.z;\n"
+    "MAD R4.xyz, R3, c[7].x, -c[7].y;\n"
+    "RCP R0.x, R0.x;\n"
+    "MUL R0.x, R0.y, R0;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "MAD R2.xyz, R0, c[6].x, -R0.w;\n"
+    "MAD R4.xyz, R3, R4, c[7].z;\n"
+    "MUL R5.xyz, R1.w, R2;\n"
+    "MUL R6.xyz, R5, R4;\n"
+    "RSQ R2.w, R3.x;\n"
+    "RCP R4.x, R2.w;\n"
+    "RSQ R2.w, R3.y;\n"
+    "RSQ R3.w, R3.z;\n"
+    "RCP R4.y, R2.w;\n"
+    "RCP R4.z, R3.w;\n"
+    "ADD R4.xyz, -R3, R4;\n"
+    "MUL R6.xyz, R3, R6;\n"
+    "MUL R4.xyz, R5, R4;\n"
+    "ADD R3.xyz, -R3, c[6].z;\n"
+    "MAD R2.xyz, R2, R3, R0.w;\n"
+    "MUL R3.xyz, R0, c[6].x;\n"
+    "MAD R5.xyz, R0.w, R1, R6;\n"
+    "MAD R4.xyz, R0.w, R1, R4;\n"
+    "ADD R6.xyz, R4, -R5;\n"
+    "MUL R4.xyz, R1, c[6].y;\n"
+    "SGE R4.xyz, R4, R1.w;\n"
+    "MAD R4.xyz, R4, R6, R5;\n"
+    "MAD R4.xyz, -R1, R2, R4;\n"
+    "MUL R2.xyz, R1, R2;\n"
+    "SGE R3.xyz, R3, R0.w;\n"
+    "MAD R2.xyz, R3, R4, R2;\n"
+    "ADD R2.w, -R1, c[6].z;\n"
+    "MAD R2.xyz, R0, R2.w, R2;\n"
+    "ADD R0.x, R0.w, R1.w;\n"
+    "ADD R0.y, -R0.w, c[6].z;\n"
+    "MAD result.color.xyz, R1, R0.y, R2;\n"
+    "MAD result.color.w, -R0, R1, R0.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_DIFFERENCE_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[7] = { program.local[0..5],\n"
+    "		{ 2, 4 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[3];\n"
+    "MAD R0.xyz, fragment.position.x, c[2], R0;\n"
+    "ADD R0.xyz, R0, c[4];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, R0.xyxy;\n"
+    "ADD R0.z, R0, R0.w;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.z, -R0, c[1].x;\n"
+    "MUL R0.y, R0.x, c[6].x;\n"
+    "MUL R0.z, R0, c[6].y;\n"
+    "MAD R0.x, R0.y, R0.y, -R0.z;\n"
+    "RSQ R0.z, R0.x;\n"
+    "MOV R0.x, c[6];\n"
+    "MUL R0.w, R0.x, c[1].x;\n"
+    "RCP R0.z, R0.z;\n"
+    "ADD R0.x, -R0.y, R0.z;\n"
+    "RCP R0.y, R0.w;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[5].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "MUL R0.x, R0, R0.y;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "MUL R2.xyz, R0, R1.w;\n"
+    "MUL R3.xyz, R0.w, R1;\n"
+    "ADD R0.xyz, R0, R1;\n"
+    "MIN R2.xyz, R2, R3;\n"
+    "ADD R1.x, R0.w, R1.w;\n"
+    "MAD result.color.xyz, -R2, c[6].x, R0;\n"
+    "MAD result.color.w, -R0, R1, R1.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_EXCLUSION_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[7] = { program.local[0..5],\n"
+    "		{ 2, 4, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[3];\n"
+    "MAD R0.xyz, fragment.position.x, c[2], R0;\n"
+    "ADD R0.xyz, R0, c[4];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, R0.xyxy;\n"
+    "ADD R0.z, R0, R0.w;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.z, -R0, c[1].x;\n"
+    "MUL R0.y, R0.x, c[6].x;\n"
+    "MUL R0.z, R0, c[6].y;\n"
+    "MAD R0.x, R0.y, R0.y, -R0.z;\n"
+    "RSQ R0.z, R0.x;\n"
+    "MOV R0.x, c[6];\n"
+    "MUL R0.w, R0.x, c[1].x;\n"
+    "RCP R0.z, R0.z;\n"
+    "ADD R0.x, -R0.y, R0.z;\n"
+    "RCP R0.y, R0.w;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[5].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "MUL R0.x, R0, R0.y;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "MUL R2.xyz, R0.w, R1;\n"
+    "MAD R3.xyz, R0, R1.w, R2;\n"
+    "MUL R2.xyz, R0, R1;\n"
+    "MAD R2.xyz, -R2, c[6].x, R3;\n"
+    "ADD R2.w, -R1, c[6].z;\n"
+    "MAD R0.xyz, R0, R2.w, R2;\n"
+    "ADD R2.x, R0.w, R1.w;\n"
+    "ADD R2.y, -R0.w, c[6].z;\n"
+    "MAD result.color.xyz, R1, R2.y, R0;\n"
+    "MAD result.color.w, -R0, R1, R2.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODE_BLEND_MODE_MASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[9] = { program.local[0..7],\n"
+    "		{ 2, 4 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "MUL R0.xyz, fragment.position.y, c[3];\n"
+    "MAD R0.xyz, fragment.position.x, c[2], R0;\n"
+    "ADD R0.xyz, R0, c[4];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, R0.xyxy;\n"
+    "ADD R0.z, R0, R0.w;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.z, -R0, c[1].x;\n"
+    "MUL R0.y, R0.z, c[8];\n"
+    "MUL R0.x, R0, c[8];\n"
+    "MAD R0.y, R0.x, R0.x, -R0;\n"
+    "RSQ R0.y, R0.y;\n"
+    "RCP R0.y, R0.y;\n"
+    "ADD R1.x, -R0, R0.y;\n"
+    "MOV R0.x, c[8];\n"
+    "MUL R0.x, R0, c[1];\n"
+    "RCP R1.y, R0.x;\n"
+    "ADD R0.zw, fragment.position.xyxy, c[6].xyxy;\n"
+    "MUL R0.zw, R0, c[5].xyxy;\n"
+    "TEX R0, R0.zwzw, texture[0], 2D;\n"
+    "MUL R1.x, R1, R1.y;\n"
+    "DP4 R1.y, R0, c[7];\n"
+    "TEX R0, R1, texture[1], 1D;\n"
+    "MUL result.color, R0, R1.y;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODE_BLEND_MODE_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[6] = { program.local[0..4],\n"
+    "		{ 2, 4 } };\n"
+    "TEMP R0;\n"
+    "MUL R0.xyz, fragment.position.y, c[3];\n"
+    "MAD R0.xyz, fragment.position.x, c[2], R0;\n"
+    "ADD R0.xyz, R0, c[4];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, R0.xyxy;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.z, R0, R0.w;\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.z, -R0, c[1].x;\n"
+    "MUL R0.y, R0.z, c[5];\n"
+    "MUL R0.x, R0, c[5];\n"
+    "MAD R0.z, R0.x, R0.x, -R0.y;\n"
+    "MOV R0.y, c[5].x;\n"
+    "RSQ R0.z, R0.z;\n"
+    "MUL R0.w, R0.y, c[1].x;\n"
+    "RCP R0.y, R0.z;\n"
+    "RCP R0.z, R0.w;\n"
+    "ADD R0.x, -R0, R0.y;\n"
+    "MUL R0.x, R0, R0.z;\n"
+    "TEX result.color, R0, texture[0], 1D;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_SIMPLE_PORTER_DUFF =
+    "!!ARBfp1.0\n"
+    "PARAM c[13] = { program.local[0..9],\n"
+    "		{ 0.15915494, 0.0020000001, 3.141593, 1.570796 },\n"
+    "		{ -0.01348047, 0.05747731, 0.1212391, 0.1956359 },\n"
+    "		{ 0.33299461, 0.99999559, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "ABS R0.z, R0.x;\n"
+    "ABS R0.w, R0.y;\n"
+    "ADD R0.w, R0, -R0.z;\n"
+    "ADD R1.x, R0.y, c[10].y;\n"
+    "ABS R0.w, R0;\n"
+    "CMP R0.y, -R0.w, R0, R1.x;\n"
+    "ABS R0.w, -R0.y;\n"
+    "MAX R1.x, R0.z, R0.w;\n"
+    "RCP R1.y, R1.x;\n"
+    "MIN R1.x, R0.z, R0.w;\n"
+    "MUL R1.x, R1, R1.y;\n"
+    "MUL R1.y, R1.x, R1.x;\n"
+    "MAD R1.z, R1.y, c[11].x, c[11].y;\n"
+    "MAD R1.z, R1, R1.y, -c[11];\n"
+    "MAD R1.z, R1, R1.y, c[11].w;\n"
+    "MAD R1.z, R1, R1.y, -c[12].x;\n"
+    "MAD R1.y, R1.z, R1, c[12];\n"
+    "MUL R1.x, R1.y, R1;\n"
+    "ADD R1.y, -R1.x, c[10].w;\n"
+    "ADD R0.z, -R0, R0.w;\n"
+    "CMP R0.z, -R0, R1.y, R1.x;\n"
+    "ADD R0.w, -R0.z, c[10].z;\n"
+    "CMP R0.x, R0, R0.w, R0.z;\n"
+    "CMP R0.x, -R0.y, -R0, R0;\n"
+    "ADD R0.x, R0, c[0];\n"
+    "MUL R1.x, R0, c[10];\n"
+    "FLR R1.y, R1.x;\n"
+    "MUL R0.xy, fragment.position, c[7];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "ADD R1.x, R1, -R1.y;\n"
+    "TEX R1, R1, texture[2], 1D;\n"
+    "MUL R2.xyz, R0, c[4].y;\n"
+    "MUL R3.xyz, R1.w, R2;\n"
+    "MUL R2.xyz, R1, c[4].x;\n"
+    "MAD R2.xyz, R0.w, R2, R3;\n"
+    "ADD R3.xy, fragment.position, c[8];\n"
+    "ADD R2.w, -R0, c[12].z;\n"
+    "MUL R1.xyz, R1, c[5].y;\n"
+    "MAD R2.xyz, R2.w, R1, R2;\n"
+    "MUL R1.xyz, R0, c[5].z;\n"
+    "ADD R3.z, -R1.w, c[12];\n"
+    "MAD R2.xyz, R3.z, R1, R2;\n"
+    "MUL R1.y, R1.w, R2.w;\n"
+    "MUL R1.x, R1.w, R0.w;\n"
+    "MUL R1.z, R0.w, R3;\n"
+    "DP3 R2.w, R1, c[5];\n"
+    "MUL R3.xy, R3, c[6];\n"
+    "TEX R1, R3, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[9];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_MULTIPLY =
+    "!!ARBfp1.0\n"
+    "PARAM c[11] = { program.local[0..7],\n"
+    "		{ 0.15915494, 0.0020000001, 3.141593, 1.570796 },\n"
+    "		{ -0.01348047, 0.05747731, 0.1212391, 0.1956359 },\n"
+    "		{ 0.33299461, 0.99999559, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "ABS R0.z, R0.x;\n"
+    "ABS R0.w, R0.y;\n"
+    "ADD R0.w, R0, -R0.z;\n"
+    "ADD R1.x, R0.y, c[8].y;\n"
+    "ABS R0.w, R0;\n"
+    "CMP R0.y, -R0.w, R0, R1.x;\n"
+    "ABS R0.w, -R0.y;\n"
+    "MAX R1.x, R0.z, R0.w;\n"
+    "RCP R1.y, R1.x;\n"
+    "MIN R1.x, R0.z, R0.w;\n"
+    "MUL R1.x, R1, R1.y;\n"
+    "MUL R1.y, R1.x, R1.x;\n"
+    "MAD R1.z, R1.y, c[9].x, c[9].y;\n"
+    "MAD R1.z, R1, R1.y, -c[9];\n"
+    "MAD R1.z, R1, R1.y, c[9].w;\n"
+    "MAD R1.z, R1, R1.y, -c[10].x;\n"
+    "MAD R1.y, R1.z, R1, c[10];\n"
+    "MUL R1.x, R1.y, R1;\n"
+    "ADD R1.y, -R1.x, c[8].w;\n"
+    "ADD R0.z, -R0, R0.w;\n"
+    "CMP R0.z, -R0, R1.y, R1.x;\n"
+    "ADD R0.w, -R0.z, c[8].z;\n"
+    "CMP R0.x, R0, R0.w, R0.z;\n"
+    "CMP R0.x, -R0.y, -R0, R0;\n"
+    "ADD R0.x, R0, c[0];\n"
+    "MUL R1.x, R0, c[8];\n"
+    "FLR R1.y, R1.x;\n"
+    "MUL R0.xy, fragment.position, c[5];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "ADD R1.x, R1, -R1.y;\n"
+    "TEX R1, R1, texture[2], 1D;\n"
+    "ADD R2.x, -R0.w, c[10].z;\n"
+    "MUL R2.xyz, R1, R2.x;\n"
+    "MAD R1.xyz, R1, R0, R2;\n"
+    "ADD R2.x, -R1.w, c[10].z;\n"
+    "MAD R2.xyz, R0, R2.x, R1;\n"
+    "ADD R1.z, R1.w, R0.w;\n"
+    "MAD R2.w, -R1, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[6];\n"
+    "MUL R1.xy, R1, c[4];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[7];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_SCREEN =
+    "!!ARBfp1.0\n"
+    "PARAM c[11] = { program.local[0..7],\n"
+    "		{ 0.15915494, 0.0020000001, 3.141593, 1.570796 },\n"
+    "		{ -0.01348047, 0.05747731, 0.1212391, 0.1956359 },\n"
+    "		{ 0.33299461, 0.99999559 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "ADD R3.xy, fragment.position, c[6];\n"
+    "ABS R0.z, R0.x;\n"
+    "ABS R0.w, R0.y;\n"
+    "ADD R0.w, R0, -R0.z;\n"
+    "ADD R1.x, R0.y, c[8].y;\n"
+    "ABS R0.w, R0;\n"
+    "CMP R0.y, -R0.w, R0, R1.x;\n"
+    "ABS R0.w, -R0.y;\n"
+    "MAX R1.x, R0.z, R0.w;\n"
+    "RCP R1.y, R1.x;\n"
+    "MIN R1.x, R0.z, R0.w;\n"
+    "MUL R1.x, R1, R1.y;\n"
+    "MUL R1.y, R1.x, R1.x;\n"
+    "MAD R1.z, R1.y, c[9].x, c[9].y;\n"
+    "MAD R1.z, R1, R1.y, -c[9];\n"
+    "MAD R1.z, R1, R1.y, c[9].w;\n"
+    "MAD R1.z, R1, R1.y, -c[10].x;\n"
+    "MAD R1.y, R1.z, R1, c[10];\n"
+    "MUL R1.x, R1.y, R1;\n"
+    "ADD R0.z, -R0, R0.w;\n"
+    "ADD R1.y, -R1.x, c[8].w;\n"
+    "CMP R0.z, -R0, R1.y, R1.x;\n"
+    "ADD R0.w, -R0.z, c[8].z;\n"
+    "CMP R0.x, R0, R0.w, R0.z;\n"
+    "CMP R0.x, -R0.y, -R0, R0;\n"
+    "ADD R0.x, R0, c[0];\n"
+    "MUL R0.x, R0, c[8];\n"
+    "FLR R0.y, R0.x;\n"
+    "ADD R0.z, R0.x, -R0.y;\n"
+    "TEX R1, R0.z, texture[2], 1D;\n"
+    "MUL R0.xy, fragment.position, c[5];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "ADD R2, R1, R0;\n"
+    "MAD R2, -R1, R0, R2;\n"
+    "MUL R3.xy, R3, c[4];\n"
+    "TEX R1, R3, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[7];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_OVERLAY =
+    "!!ARBfp1.0\n"
+    "PARAM c[11] = { program.local[0..7],\n"
+    "		{ 0.0020000001, -0.01348047, 0.05747731, 0.1212391 },\n"
+    "		{ 0.1956359, 0.33299461, 0.99999559, 1.570796 },\n"
+    "		{ 3.141593, 0.15915494, 2, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "ABS R0.z, R0.x;\n"
+    "ABS R0.w, R0.y;\n"
+    "ADD R0.w, R0, -R0.z;\n"
+    "ADD R1.x, R0.y, c[8];\n"
+    "ABS R0.w, R0;\n"
+    "CMP R0.y, -R0.w, R0, R1.x;\n"
+    "ABS R0.w, -R0.y;\n"
+    "MAX R1.x, R0.z, R0.w;\n"
+    "RCP R1.y, R1.x;\n"
+    "MIN R1.x, R0.z, R0.w;\n"
+    "MUL R1.x, R1, R1.y;\n"
+    "MUL R1.y, R1.x, R1.x;\n"
+    "MAD R1.z, R1.y, c[8].y, c[8];\n"
+    "MAD R1.z, R1, R1.y, -c[8].w;\n"
+    "MAD R1.z, R1, R1.y, c[9].x;\n"
+    "MAD R1.z, R1, R1.y, -c[9].y;\n"
+    "MAD R1.y, R1.z, R1, c[9].z;\n"
+    "MUL R1.x, R1.y, R1;\n"
+    "ADD R0.z, -R0, R0.w;\n"
+    "ADD R1.y, -R1.x, c[9].w;\n"
+    "CMP R0.z, -R0, R1.y, R1.x;\n"
+    "ADD R0.w, -R0.z, c[10].x;\n"
+    "CMP R0.x, R0, R0.w, R0.z;\n"
+    "CMP R0.x, -R0.y, -R0, R0;\n"
+    "ADD R0.x, R0, c[0];\n"
+    "MUL R0.x, R0, c[10].y;\n"
+    "FLR R0.y, R0.x;\n"
+    "ADD R0.x, R0, -R0.y;\n"
+    "TEX R0, R0, texture[2], 1D;\n"
+    "MUL R1.xy, fragment.position, c[5];\n"
+    "TEX R1, R1, texture[0], 2D;\n"
+    "ADD R2.w, -R1, c[10];\n"
+    "ADD R3.xyz, R0.w, -R0;\n"
+    "ADD R2.xyz, R1.w, -R1;\n"
+    "MUL R2.xyz, R2, R3;\n"
+    "MUL R2.xyz, R2, c[10].z;\n"
+    "MAD R2.xyz, R0.w, R1.w, -R2;\n"
+    "MUL R4.xyz, R0, R2.w;\n"
+    "MUL R3.xyz, R0, R1;\n"
+    "MAD R0.xyz, R0, R2.w, R2;\n"
+    "ADD R2.x, -R0.w, c[10].w;\n"
+    "MAD R3.xyz, R3, c[10].z, R4;\n"
+    "MAD R3.xyz, R1, R2.x, R3;\n"
+    "MAD R0.xyz, R1, R2.x, R0;\n"
+    "MUL R2.xyz, R1, c[10].z;\n"
+    "ADD R0.xyz, R0, -R3;\n"
+    "SGE R2.xyz, R2, R1.w;\n"
+    "MAD R2.xyz, R2, R0, R3;\n"
+    "ADD R0.z, R0.w, R1.w;\n"
+    "MAD R2.w, -R0, R1, R0.z;\n"
+    "ADD R0.xy, fragment.position, c[6];\n"
+    "MUL R0.xy, R0, c[4];\n"
+    "TEX R0, R0, texture[1], 2D;\n"
+    "ADD R2, R2, -R1;\n"
+    "DP4 R0.x, R0, c[7];\n"
+    "MAD result.color, R0.x, R2, R1;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_DARKEN =
+    "!!ARBfp1.0\n"
+    "PARAM c[11] = { program.local[0..7],\n"
+    "		{ 0.15915494, 0.0020000001, 3.141593, 1.570796 },\n"
+    "		{ -0.01348047, 0.05747731, 0.1212391, 0.1956359 },\n"
+    "		{ 0.33299461, 0.99999559, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "ABS R0.z, R0.x;\n"
+    "ABS R0.w, R0.y;\n"
+    "ADD R0.w, R0, -R0.z;\n"
+    "ADD R1.x, R0.y, c[8].y;\n"
+    "ABS R0.w, R0;\n"
+    "CMP R0.y, -R0.w, R0, R1.x;\n"
+    "ABS R0.w, -R0.y;\n"
+    "MAX R1.x, R0.z, R0.w;\n"
+    "RCP R1.y, R1.x;\n"
+    "MIN R1.x, R0.z, R0.w;\n"
+    "MUL R1.x, R1, R1.y;\n"
+    "MUL R1.y, R1.x, R1.x;\n"
+    "MAD R1.z, R1.y, c[9].x, c[9].y;\n"
+    "MAD R1.z, R1, R1.y, -c[9];\n"
+    "MAD R1.z, R1, R1.y, c[9].w;\n"
+    "MAD R1.z, R1, R1.y, -c[10].x;\n"
+    "MAD R1.y, R1.z, R1, c[10];\n"
+    "MUL R1.x, R1.y, R1;\n"
+    "ADD R1.y, -R1.x, c[8].w;\n"
+    "ADD R0.z, -R0, R0.w;\n"
+    "CMP R0.z, -R0, R1.y, R1.x;\n"
+    "ADD R0.w, -R0.z, c[8].z;\n"
+    "CMP R0.x, R0, R0.w, R0.z;\n"
+    "CMP R0.x, -R0.y, -R0, R0;\n"
+    "ADD R0.x, R0, c[0];\n"
+    "MUL R0.z, R0.x, c[8].x;\n"
+    "FLR R0.w, R0.z;\n"
+    "ADD R1.x, R0.z, -R0.w;\n"
+    "MUL R0.xy, fragment.position, c[5];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "TEX R1, R1, texture[2], 1D;\n"
+    "MUL R3.xyz, R1.w, R0;\n"
+    "MUL R2.xyz, R1, R0.w;\n"
+    "MIN R2.xyz, R2, R3;\n"
+    "ADD R2.w, -R0, c[10].z;\n"
+    "MAD R1.xyz, R1, R2.w, R2;\n"
+    "ADD R2.x, -R1.w, c[10].z;\n"
+    "MAD R2.xyz, R0, R2.x, R1;\n"
+    "ADD R1.z, R1.w, R0.w;\n"
+    "MAD R2.w, -R1, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[6];\n"
+    "MUL R1.xy, R1, c[4];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[7];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_LIGHTEN =
+    "!!ARBfp1.0\n"
+    "PARAM c[11] = { program.local[0..7],\n"
+    "		{ 0.15915494, 0.0020000001, 3.141593, 1.570796 },\n"
+    "		{ -0.01348047, 0.05747731, 0.1212391, 0.1956359 },\n"
+    "		{ 0.33299461, 0.99999559, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "ABS R0.z, R0.x;\n"
+    "ABS R0.w, R0.y;\n"
+    "ADD R0.w, R0, -R0.z;\n"
+    "ADD R1.x, R0.y, c[8].y;\n"
+    "ABS R0.w, R0;\n"
+    "CMP R0.y, -R0.w, R0, R1.x;\n"
+    "ABS R0.w, -R0.y;\n"
+    "MAX R1.x, R0.z, R0.w;\n"
+    "RCP R1.y, R1.x;\n"
+    "MIN R1.x, R0.z, R0.w;\n"
+    "MUL R1.x, R1, R1.y;\n"
+    "MUL R1.y, R1.x, R1.x;\n"
+    "MAD R1.z, R1.y, c[9].x, c[9].y;\n"
+    "MAD R1.z, R1, R1.y, -c[9];\n"
+    "MAD R1.z, R1, R1.y, c[9].w;\n"
+    "MAD R1.z, R1, R1.y, -c[10].x;\n"
+    "MAD R1.y, R1.z, R1, c[10];\n"
+    "MUL R1.x, R1.y, R1;\n"
+    "ADD R1.y, -R1.x, c[8].w;\n"
+    "ADD R0.z, -R0, R0.w;\n"
+    "CMP R0.z, -R0, R1.y, R1.x;\n"
+    "ADD R0.w, -R0.z, c[8].z;\n"
+    "CMP R0.x, R0, R0.w, R0.z;\n"
+    "CMP R0.x, -R0.y, -R0, R0;\n"
+    "ADD R0.x, R0, c[0];\n"
+    "MUL R0.z, R0.x, c[8].x;\n"
+    "FLR R0.w, R0.z;\n"
+    "ADD R1.x, R0.z, -R0.w;\n"
+    "MUL R0.xy, fragment.position, c[5];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "TEX R1, R1, texture[2], 1D;\n"
+    "MUL R3.xyz, R1.w, R0;\n"
+    "MUL R2.xyz, R1, R0.w;\n"
+    "MAX R2.xyz, R2, R3;\n"
+    "ADD R2.w, -R0, c[10].z;\n"
+    "MAD R1.xyz, R1, R2.w, R2;\n"
+    "ADD R2.x, -R1.w, c[10].z;\n"
+    "MAD R2.xyz, R0, R2.x, R1;\n"
+    "ADD R1.z, R1.w, R0.w;\n"
+    "MAD R2.w, -R1, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[6];\n"
+    "MUL R1.xy, R1, c[4];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[7];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_COLORDODGE =
+    "!!ARBfp1.0\n"
+    "PARAM c[11] = { program.local[0..7],\n"
+    "		{ 0.0020000001, -0.01348047, 0.05747731, 0.1212391 },\n"
+    "		{ 0.1956359, 0.33299461, 0.99999559, 1.570796 },\n"
+    "		{ 3.141593, 0.15915494, 1, 1e-006 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "ABS R0.z, R0.x;\n"
+    "ABS R0.w, R0.y;\n"
+    "ADD R0.w, R0, -R0.z;\n"
+    "ADD R1.x, R0.y, c[8];\n"
+    "ABS R0.w, R0;\n"
+    "CMP R0.y, -R0.w, R0, R1.x;\n"
+    "ABS R0.w, -R0.y;\n"
+    "MAX R1.x, R0.z, R0.w;\n"
+    "RCP R1.y, R1.x;\n"
+    "MIN R1.x, R0.z, R0.w;\n"
+    "MUL R1.x, R1, R1.y;\n"
+    "MUL R1.y, R1.x, R1.x;\n"
+    "MAD R1.z, R1.y, c[8].y, c[8];\n"
+    "MAD R1.z, R1, R1.y, -c[8].w;\n"
+    "MAD R1.z, R1, R1.y, c[9].x;\n"
+    "MAD R1.z, R1, R1.y, -c[9].y;\n"
+    "MAD R1.y, R1.z, R1, c[9].z;\n"
+    "MUL R1.x, R1.y, R1;\n"
+    "ADD R1.y, -R1.x, c[9].w;\n"
+    "ADD R0.z, -R0, R0.w;\n"
+    "CMP R0.z, -R0, R1.y, R1.x;\n"
+    "ADD R0.w, -R0.z, c[10].x;\n"
+    "CMP R0.x, R0, R0.w, R0.z;\n"
+    "CMP R0.x, -R0.y, -R0, R0;\n"
+    "ADD R0.x, R0, c[0];\n"
+    "MUL R0.x, R0, c[10].y;\n"
+    "FLR R0.y, R0.x;\n"
+    "ADD R0.x, R0, -R0.y;\n"
+    "TEX R0, R0, texture[2], 1D;\n"
+    "MAX R1.x, R0.w, c[10].w;\n"
+    "RCP R1.x, R1.x;\n"
+    "MAD R1.xyz, -R0, R1.x, c[10].z;\n"
+    "MAX R2.xyz, R1, c[10].w;\n"
+    "MUL R1.xy, fragment.position, c[5];\n"
+    "TEX R1, R1, texture[0], 2D;\n"
+    "ADD R2.w, -R0, c[10].z;\n"
+    "MUL R3.xyz, R1, R2.w;\n"
+    "ADD R2.w, -R1, c[10].z;\n"
+    "MAD R4.xyz, R0, R2.w, R3;\n"
+    "MUL R3.xyz, R0.w, R1;\n"
+    "MUL R2.w, R0, R1;\n"
+    "MAD R0.xyz, R0, R1.w, R3;\n"
+    "SGE R0.xyz, R0, R2.w;\n"
+    "RCP R2.x, R2.x;\n"
+    "RCP R2.y, R2.y;\n"
+    "RCP R2.z, R2.z;\n"
+    "MAD R2.xyz, R3, R2, R4;\n"
+    "MAD R4.xyz, R0.w, R1.w, R4;\n"
+    "ADD R4.xyz, R4, -R2;\n"
+    "MAD R2.xyz, R0, R4, R2;\n"
+    "ADD R0.z, R0.w, R1.w;\n"
+    "MAD R2.w, -R0, R1, R0.z;\n"
+    "ADD R0.xy, fragment.position, c[6];\n"
+    "MUL R0.xy, R0, c[4];\n"
+    "TEX R0, R0, texture[1], 2D;\n"
+    "ADD R2, R2, -R1;\n"
+    "DP4 R0.x, R0, c[7];\n"
+    "MAD result.color, R0.x, R2, R1;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_COLORBURN =
+    "!!ARBfp1.0\n"
+    "PARAM c[11] = { program.local[0..7],\n"
+    "		{ 0.0020000001, -0.01348047, 0.05747731, 0.1212391 },\n"
+    "		{ 0.1956359, 0.33299461, 0.99999559, 1.570796 },\n"
+    "		{ 3.141593, 0.15915494, 1, 9.9999997e-006 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "TEMP R5;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "ABS R0.w, R0.x;\n"
+    "ABS R0.z, R0.y;\n"
+    "ADD R0.z, R0, -R0.w;\n"
+    "ADD R1.x, R0.y, c[8];\n"
+    "ABS R0.z, R0;\n"
+    "CMP R0.y, -R0.z, R0, R1.x;\n"
+    "ABS R0.z, -R0.y;\n"
+    "MAX R1.x, R0.w, R0.z;\n"
+    "RCP R1.y, R1.x;\n"
+    "MIN R1.x, R0.w, R0.z;\n"
+    "MUL R1.x, R1, R1.y;\n"
+    "MUL R1.y, R1.x, R1.x;\n"
+    "MAD R1.z, R1.y, c[8].y, c[8];\n"
+    "MAD R1.z, R1, R1.y, -c[8].w;\n"
+    "MAD R1.z, R1, R1.y, c[9].x;\n"
+    "MAD R1.z, R1, R1.y, -c[9].y;\n"
+    "MAD R1.y, R1.z, R1, c[9].z;\n"
+    "MUL R1.x, R1.y, R1;\n"
+    "ADD R1.y, -R1.x, c[9].w;\n"
+    "ADD R0.z, -R0.w, R0;\n"
+    "CMP R0.z, -R0, R1.y, R1.x;\n"
+    "ADD R0.w, -R0.z, c[10].x;\n"
+    "CMP R0.x, R0, R0.w, R0.z;\n"
+    "CMP R0.x, -R0.y, -R0, R0;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[5].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "ADD R0.x, R0, c[0];\n"
+    "MUL R0.x, R0, c[10].y;\n"
+    "FLR R0.y, R0.x;\n"
+    "ADD R0.x, R0, -R0.y;\n"
+    "TEX R0, R0, texture[2], 1D;\n"
+    "MUL R2.xyz, R0.w, R1;\n"
+    "MAD R3.xyz, R0, R1.w, R2;\n"
+    "MAD R2.xyz, -R0.w, R1.w, R3;\n"
+    "MUL R4.xyz, R0.w, R2;\n"
+    "MAX R2.xyz, R0, c[10].w;\n"
+    "ADD R2.w, -R1, c[10].z;\n"
+    "ADD R3.w, -R0, c[10].z;\n"
+    "MUL R5.xyz, R0, R2.w;\n"
+    "RCP R2.x, R2.x;\n"
+    "RCP R2.y, R2.y;\n"
+    "RCP R2.z, R2.z;\n"
+    "MAD R2.xyz, R4, R2, R5;\n"
+    "MUL R4.xyz, R1, R3.w;\n"
+    "MAD R0.xyz, R0, R2.w, R4;\n"
+    "MUL R2.w, R0, R1;\n"
+    "MAD R2.xyz, R1, R3.w, R2;\n"
+    "ADD R2.xyz, R2, -R0;\n"
+    "SGE R3.xyz, R3, R2.w;\n"
+    "MAD R2.xyz, R3, R2, R0;\n"
+    "ADD R0.z, R0.w, R1.w;\n"
+    "MAD R2.w, -R0, R1, R0.z;\n"
+    "ADD R0.xy, fragment.position, c[6];\n"
+    "MUL R0.xy, R0, c[4];\n"
+    "TEX R0, R0, texture[1], 2D;\n"
+    "ADD R2, R2, -R1;\n"
+    "DP4 R0.x, R0, c[7];\n"
+    "MAD result.color, R0.x, R2, R1;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_HARDLIGHT =
+    "!!ARBfp1.0\n"
+    "PARAM c[11] = { program.local[0..7],\n"
+    "		{ 0.0020000001, -0.01348047, 0.05747731, 0.1212391 },\n"
+    "		{ 0.1956359, 0.33299461, 0.99999559, 1.570796 },\n"
+    "		{ 3.141593, 0.15915494, 2, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "ABS R0.z, R0.x;\n"
+    "ABS R0.w, R0.y;\n"
+    "ADD R0.w, R0, -R0.z;\n"
+    "ADD R1.x, R0.y, c[8];\n"
+    "ABS R0.w, R0;\n"
+    "CMP R0.y, -R0.w, R0, R1.x;\n"
+    "ABS R0.w, -R0.y;\n"
+    "MAX R1.x, R0.z, R0.w;\n"
+    "RCP R1.y, R1.x;\n"
+    "MIN R1.x, R0.z, R0.w;\n"
+    "MUL R1.x, R1, R1.y;\n"
+    "MUL R1.y, R1.x, R1.x;\n"
+    "MAD R1.z, R1.y, c[8].y, c[8];\n"
+    "MAD R1.z, R1, R1.y, -c[8].w;\n"
+    "MAD R1.z, R1, R1.y, c[9].x;\n"
+    "MAD R1.z, R1, R1.y, -c[9].y;\n"
+    "MAD R1.y, R1.z, R1, c[9].z;\n"
+    "MUL R1.x, R1.y, R1;\n"
+    "ADD R0.z, -R0, R0.w;\n"
+    "ADD R1.y, -R1.x, c[9].w;\n"
+    "CMP R0.z, -R0, R1.y, R1.x;\n"
+    "ADD R0.w, -R0.z, c[10].x;\n"
+    "CMP R0.x, R0, R0.w, R0.z;\n"
+    "CMP R0.x, -R0.y, -R0, R0;\n"
+    "ADD R0.x, R0, c[0];\n"
+    "MUL R0.x, R0, c[10].y;\n"
+    "FLR R0.y, R0.x;\n"
+    "ADD R0.x, R0, -R0.y;\n"
+    "TEX R0, R0, texture[2], 1D;\n"
+    "MUL R1.xy, fragment.position, c[5];\n"
+    "TEX R1, R1, texture[0], 2D;\n"
+    "ADD R2.w, -R1, c[10];\n"
+    "ADD R3.xyz, R0.w, -R0;\n"
+    "ADD R2.xyz, R1.w, -R1;\n"
+    "MUL R2.xyz, R2, R3;\n"
+    "MUL R2.xyz, R2, c[10].z;\n"
+    "MAD R2.xyz, R0.w, R1.w, -R2;\n"
+    "MUL R4.xyz, R0, R2.w;\n"
+    "MAD R2.xyz, R0, R2.w, R2;\n"
+    "MUL R3.xyz, R0, R1;\n"
+    "ADD R2.w, -R0, c[10];\n"
+    "MAD R3.xyz, R3, c[10].z, R4;\n"
+    "MUL R0.xyz, R0, c[10].z;\n"
+    "SGE R0.xyz, R0, R0.w;\n"
+    "MAD R3.xyz, R1, R2.w, R3;\n"
+    "MAD R2.xyz, R1, R2.w, R2;\n"
+    "ADD R2.xyz, R2, -R3;\n"
+    "MAD R2.xyz, R0, R2, R3;\n"
+    "ADD R0.z, R0.w, R1.w;\n"
+    "MAD R2.w, -R0, R1, R0.z;\n"
+    "ADD R0.xy, fragment.position, c[6];\n"
+    "MUL R0.xy, R0, c[4];\n"
+    "TEX R0, R0, texture[1], 2D;\n"
+    "ADD R2, R2, -R1;\n"
+    "DP4 R0.x, R0, c[7];\n"
+    "MAD result.color, R0.x, R2, R1;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_SOFTLIGHT =
+    "!!ARBfp1.0\n"
+    "PARAM c[13] = { program.local[0..7],\n"
+    "		{ 0.0020000001, -0.01348047, 0.05747731, 0.1212391 },\n"
+    "		{ 0.1956359, 0.33299461, 0.99999559, 1.570796 },\n"
+    "		{ 3.141593, 0.15915494, 1, 2 },\n"
+    "		{ 9.9999997e-006, 4, 16, 12 },\n"
+    "		{ 3 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "TEMP R5;\n"
+    "TEMP R6;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "ABS R0.w, R0.x;\n"
+    "ABS R0.z, R0.y;\n"
+    "ADD R0.z, R0, -R0.w;\n"
+    "ADD R1.x, R0.y, c[8];\n"
+    "ABS R0.z, R0;\n"
+    "CMP R0.y, -R0.z, R0, R1.x;\n"
+    "ABS R0.z, -R0.y;\n"
+    "MAX R1.x, R0.w, R0.z;\n"
+    "RCP R1.y, R1.x;\n"
+    "MIN R1.x, R0.w, R0.z;\n"
+    "MUL R1.x, R1, R1.y;\n"
+    "MUL R1.y, R1.x, R1.x;\n"
+    "MAD R1.z, R1.y, c[8].y, c[8];\n"
+    "MAD R1.z, R1, R1.y, -c[8].w;\n"
+    "MAD R1.z, R1, R1.y, c[9].x;\n"
+    "MAD R1.z, R1, R1.y, -c[9].y;\n"
+    "MAD R1.y, R1.z, R1, c[9].z;\n"
+    "MUL R1.x, R1.y, R1;\n"
+    "ADD R1.y, -R1.x, c[9].w;\n"
+    "ADD R0.z, -R0.w, R0;\n"
+    "CMP R0.z, -R0, R1.y, R1.x;\n"
+    "ADD R0.w, -R0.z, c[10].x;\n"
+    "CMP R0.x, R0, R0.w, R0.z;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[5].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "CMP R0.x, -R0.y, -R0, R0;\n"
+    "MAX R0.z, R1.w, c[11].x;\n"
+    "RCP R2.x, R0.z;\n"
+    "MUL R3.xyz, R1, R2.x;\n"
+    "MAD R4.xyz, R3, c[11].z, -c[11].w;\n"
+    "ADD R0.x, R0, c[0];\n"
+    "MUL R0.x, R0, c[10].y;\n"
+    "FLR R0.y, R0.x;\n"
+    "ADD R0.x, R0, -R0.y;\n"
+    "TEX R0, R0, texture[2], 1D;\n"
+    "MAD R2.xyz, R0, c[10].w, -R0.w;\n"
+    "MAD R4.xyz, R3, R4, c[12].x;\n"
+    "MUL R5.xyz, R1.w, R2;\n"
+    "MUL R6.xyz, R5, R4;\n"
+    "RSQ R2.w, R3.x;\n"
+    "RCP R4.x, R2.w;\n"
+    "RSQ R2.w, R3.y;\n"
+    "RSQ R3.w, R3.z;\n"
+    "RCP R4.y, R2.w;\n"
+    "RCP R4.z, R3.w;\n"
+    "ADD R4.xyz, -R3, R4;\n"
+    "MUL R6.xyz, R3, R6;\n"
+    "MUL R4.xyz, R5, R4;\n"
+    "ADD R3.xyz, -R3, c[10].z;\n"
+    "MAD R2.xyz, R2, R3, R0.w;\n"
+    "MUL R3.xyz, R0, c[10].w;\n"
+    "MAD R5.xyz, R0.w, R1, R6;\n"
+    "MAD R4.xyz, R0.w, R1, R4;\n"
+    "ADD R6.xyz, R4, -R5;\n"
+    "MUL R4.xyz, R1, c[11].y;\n"
+    "SGE R4.xyz, R4, R1.w;\n"
+    "MAD R4.xyz, R4, R6, R5;\n"
+    "MAD R4.xyz, -R1, R2, R4;\n"
+    "SGE R3.xyz, R3, R0.w;\n"
+    "MUL R2.xyz, R1, R2;\n"
+    "ADD R2.w, -R1, c[10].z;\n"
+    "MAD R2.xyz, R3, R4, R2;\n"
+    "MAD R2.xyz, R0, R2.w, R2;\n"
+    "ADD R0.x, -R0.w, c[10].z;\n"
+    "MAD R2.xyz, R1, R0.x, R2;\n"
+    "ADD R0.z, R0.w, R1.w;\n"
+    "MAD R2.w, -R0, R1, R0.z;\n"
+    "ADD R0.xy, fragment.position, c[6];\n"
+    "MUL R0.xy, R0, c[4];\n"
+    "TEX R0, R0, texture[1], 2D;\n"
+    "ADD R2, R2, -R1;\n"
+    "DP4 R0.x, R0, c[7];\n"
+    "MAD result.color, R0.x, R2, R1;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_DIFFERENCE =
+    "!!ARBfp1.0\n"
+    "PARAM c[11] = { program.local[0..7],\n"
+    "		{ 0.15915494, 0.0020000001, 3.141593, 1.570796 },\n"
+    "		{ -0.01348047, 0.05747731, 0.1212391, 0.1956359 },\n"
+    "		{ 0.33299461, 0.99999559, 2 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "ABS R0.z, R0.x;\n"
+    "ABS R0.w, R0.y;\n"
+    "ADD R0.w, R0, -R0.z;\n"
+    "ADD R1.x, R0.y, c[8].y;\n"
+    "ABS R0.w, R0;\n"
+    "CMP R0.y, -R0.w, R0, R1.x;\n"
+    "ABS R0.w, -R0.y;\n"
+    "MAX R1.x, R0.z, R0.w;\n"
+    "RCP R1.y, R1.x;\n"
+    "MIN R1.x, R0.z, R0.w;\n"
+    "MUL R1.x, R1, R1.y;\n"
+    "MUL R1.y, R1.x, R1.x;\n"
+    "MAD R1.z, R1.y, c[9].x, c[9].y;\n"
+    "MAD R1.z, R1, R1.y, -c[9];\n"
+    "MAD R1.z, R1, R1.y, c[9].w;\n"
+    "MAD R1.z, R1, R1.y, -c[10].x;\n"
+    "MAD R1.y, R1.z, R1, c[10];\n"
+    "MUL R1.x, R1.y, R1;\n"
+    "ADD R1.y, -R1.x, c[8].w;\n"
+    "ADD R0.z, -R0, R0.w;\n"
+    "CMP R0.z, -R0, R1.y, R1.x;\n"
+    "ADD R0.w, -R0.z, c[8].z;\n"
+    "CMP R0.x, R0, R0.w, R0.z;\n"
+    "CMP R0.x, -R0.y, -R0, R0;\n"
+    "ADD R0.x, R0, c[0];\n"
+    "MUL R0.z, R0.x, c[8].x;\n"
+    "FLR R0.w, R0.z;\n"
+    "ADD R1.x, R0.z, -R0.w;\n"
+    "MUL R0.xy, fragment.position, c[5];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "TEX R1, R1, texture[2], 1D;\n"
+    "ADD R2.xyz, R1, R0;\n"
+    "MUL R3.xyz, R1.w, R0;\n"
+    "MUL R1.xyz, R1, R0.w;\n"
+    "MIN R1.xyz, R1, R3;\n"
+    "MAD R2.xyz, -R1, c[10].z, R2;\n"
+    "ADD R1.z, R1.w, R0.w;\n"
+    "MAD R2.w, -R1, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[6];\n"
+    "MUL R1.xy, R1, c[4];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[7];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_EXCLUSION =
+    "!!ARBfp1.0\n"
+    "PARAM c[11] = { program.local[0..7],\n"
+    "		{ 0.15915494, 0.0020000001, 3.141593, 1.570796 },\n"
+    "		{ -0.01348047, 0.05747731, 0.1212391, 0.1956359 },\n"
+    "		{ 0.33299461, 0.99999559, 2, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "ABS R0.z, R0.x;\n"
+    "ABS R0.w, R0.y;\n"
+    "ADD R0.w, R0, -R0.z;\n"
+    "ADD R1.x, R0.y, c[8].y;\n"
+    "ABS R0.w, R0;\n"
+    "CMP R0.y, -R0.w, R0, R1.x;\n"
+    "ABS R0.w, -R0.y;\n"
+    "MAX R1.x, R0.z, R0.w;\n"
+    "RCP R1.y, R1.x;\n"
+    "MIN R1.x, R0.z, R0.w;\n"
+    "MUL R1.x, R1, R1.y;\n"
+    "MUL R1.y, R1.x, R1.x;\n"
+    "MAD R1.z, R1.y, c[9].x, c[9].y;\n"
+    "MAD R1.z, R1, R1.y, -c[9];\n"
+    "MAD R1.z, R1, R1.y, c[9].w;\n"
+    "MAD R1.z, R1, R1.y, -c[10].x;\n"
+    "MAD R1.y, R1.z, R1, c[10];\n"
+    "MUL R1.x, R1.y, R1;\n"
+    "ADD R1.y, -R1.x, c[8].w;\n"
+    "ADD R0.z, -R0, R0.w;\n"
+    "CMP R0.z, -R0, R1.y, R1.x;\n"
+    "ADD R0.w, -R0.z, c[8].z;\n"
+    "CMP R0.x, R0, R0.w, R0.z;\n"
+    "CMP R0.x, -R0.y, -R0, R0;\n"
+    "ADD R0.x, R0, c[0];\n"
+    "MUL R0.z, R0.x, c[8].x;\n"
+    "FLR R0.w, R0.z;\n"
+    "ADD R1.x, R0.z, -R0.w;\n"
+    "MUL R0.xy, fragment.position, c[5];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "TEX R1, R1, texture[2], 1D;\n"
+    "MUL R2.xyz, R1.w, R0;\n"
+    "MAD R3.xyz, R1, R0.w, R2;\n"
+    "MUL R2.xyz, R1, R0;\n"
+    "MAD R2.xyz, -R2, c[10].z, R3;\n"
+    "ADD R2.w, -R0, c[10];\n"
+    "MAD R1.xyz, R1, R2.w, R2;\n"
+    "ADD R2.x, -R1.w, c[10].w;\n"
+    "MAD R2.xyz, R0, R2.x, R1;\n"
+    "ADD R1.z, R1.w, R0.w;\n"
+    "MAD R2.w, -R1, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[6];\n"
+    "MUL R1.xy, R1, c[4];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[7];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_SIMPLE_PORTER_DUFF_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[10] = { program.local[0..6],\n"
+    "		{ 0.15915494, 0.0020000001, 3.141593, 1.570796 },\n"
+    "		{ -0.01348047, 0.05747731, 0.1212391, 0.1956359 },\n"
+    "		{ 0.33299461, 0.99999559, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "ABS R0.z, R0.x;\n"
+    "ABS R0.w, R0.y;\n"
+    "ADD R0.w, R0, -R0.z;\n"
+    "ADD R1.x, R0.y, c[7].y;\n"
+    "ABS R0.w, R0;\n"
+    "CMP R0.y, -R0.w, R0, R1.x;\n"
+    "ABS R0.w, -R0.y;\n"
+    "MAX R1.x, R0.z, R0.w;\n"
+    "RCP R1.y, R1.x;\n"
+    "MIN R1.x, R0.z, R0.w;\n"
+    "MUL R1.x, R1, R1.y;\n"
+    "MUL R1.y, R1.x, R1.x;\n"
+    "MAD R1.z, R1.y, c[8].x, c[8].y;\n"
+    "MAD R1.z, R1, R1.y, -c[8];\n"
+    "MAD R1.z, R1, R1.y, c[8].w;\n"
+    "MAD R1.z, R1, R1.y, -c[9].x;\n"
+    "MAD R1.y, R1.z, R1, c[9];\n"
+    "MUL R1.x, R1.y, R1;\n"
+    "ADD R0.z, -R0, R0.w;\n"
+    "ADD R1.y, -R1.x, c[7].w;\n"
+    "CMP R0.z, -R0, R1.y, R1.x;\n"
+    "ADD R0.w, -R0.z, c[7].z;\n"
+    "CMP R0.x, R0, R0.w, R0.z;\n"
+    "CMP R0.x, -R0.y, -R0, R0;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[6].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "MUL R2.xyz, R1, c[4].y;\n"
+    "ADD R0.x, R0, c[0];\n"
+    "MUL R0.x, R0, c[7];\n"
+    "FLR R0.y, R0.x;\n"
+    "ADD R0.x, R0, -R0.y;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "MUL R3.xyz, R0.w, R2;\n"
+    "MUL R2.xyz, R0, c[4].x;\n"
+    "MAD R2.xyz, R1.w, R2, R3;\n"
+    "ADD R2.w, -R1, c[9].z;\n"
+    "MUL R0.xyz, R0, c[5].y;\n"
+    "MAD R0.xyz, R2.w, R0, R2;\n"
+    "ADD R2.x, -R0.w, c[9].z;\n"
+    "MUL R1.xyz, R1, c[5].z;\n"
+    "MAD result.color.xyz, R2.x, R1, R0;\n"
+    "MUL R0.x, R0.w, R1.w;\n"
+    "MUL R0.z, R1.w, R2.x;\n"
+    "MUL R0.y, R0.w, R2.w;\n"
+    "DP3 result.color.w, R0, c[5];\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_MULTIPLY_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[8] = { program.local[0..4],\n"
+    "		{ 0.15915494, 0.0020000001, 3.141593, 1.570796 },\n"
+    "		{ -0.01348047, 0.05747731, 0.1212391, 0.1956359 },\n"
+    "		{ 0.33299461, 0.99999559, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "ABS R0.z, R0.x;\n"
+    "ABS R0.w, R0.y;\n"
+    "ADD R0.w, R0, -R0.z;\n"
+    "ADD R1.x, R0.y, c[5].y;\n"
+    "ABS R0.w, R0;\n"
+    "CMP R0.y, -R0.w, R0, R1.x;\n"
+    "ABS R0.w, -R0.y;\n"
+    "MAX R1.x, R0.z, R0.w;\n"
+    "RCP R1.y, R1.x;\n"
+    "MIN R1.x, R0.z, R0.w;\n"
+    "MUL R1.x, R1, R1.y;\n"
+    "MUL R1.y, R1.x, R1.x;\n"
+    "MAD R1.z, R1.y, c[6].x, c[6].y;\n"
+    "MAD R1.z, R1, R1.y, -c[6];\n"
+    "MAD R1.z, R1, R1.y, c[6].w;\n"
+    "MAD R1.z, R1, R1.y, -c[7].x;\n"
+    "MAD R1.y, R1.z, R1, c[7];\n"
+    "MUL R1.x, R1.y, R1;\n"
+    "ADD R0.z, -R0, R0.w;\n"
+    "ADD R1.y, -R1.x, c[5].w;\n"
+    "CMP R0.z, -R0, R1.y, R1.x;\n"
+    "ADD R0.w, -R0.z, c[5].z;\n"
+    "CMP R0.x, R0, R0.w, R0.z;\n"
+    "CMP R0.x, -R0.y, -R0, R0;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[4].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "ADD R0.x, R0, c[0];\n"
+    "MUL R0.x, R0, c[5];\n"
+    "FLR R0.y, R0.x;\n"
+    "ADD R0.x, R0, -R0.y;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "ADD R2.x, -R1.w, c[7].z;\n"
+    "MUL R2.xyz, R0, R2.x;\n"
+    "MAD R0.xyz, R0, R1, R2;\n"
+    "ADD R2.x, R0.w, R1.w;\n"
+    "ADD R2.y, -R0.w, c[7].z;\n"
+    "MAD result.color.xyz, R1, R2.y, R0;\n"
+    "MAD result.color.w, -R0, R1, R2.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_SCREEN_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[8] = { program.local[0..4],\n"
+    "		{ 0.15915494, 0.0020000001, 3.141593, 1.570796 },\n"
+    "		{ -0.01348047, 0.05747731, 0.1212391, 0.1956359 },\n"
+    "		{ 0.33299461, 0.99999559 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "ABS R0.z, R0.x;\n"
+    "ABS R0.w, R0.y;\n"
+    "ADD R0.w, R0, -R0.z;\n"
+    "ADD R1.x, R0.y, c[5].y;\n"
+    "ABS R0.w, R0;\n"
+    "CMP R0.y, -R0.w, R0, R1.x;\n"
+    "ABS R0.w, -R0.y;\n"
+    "MAX R1.x, R0.z, R0.w;\n"
+    "RCP R1.y, R1.x;\n"
+    "MIN R1.x, R0.z, R0.w;\n"
+    "MUL R1.x, R1, R1.y;\n"
+    "MUL R1.y, R1.x, R1.x;\n"
+    "MAD R1.z, R1.y, c[6].x, c[6].y;\n"
+    "MAD R1.z, R1, R1.y, -c[6];\n"
+    "MAD R1.z, R1, R1.y, c[6].w;\n"
+    "MAD R1.z, R1, R1.y, -c[7].x;\n"
+    "MAD R1.y, R1.z, R1, c[7];\n"
+    "MUL R1.x, R1.y, R1;\n"
+    "ADD R0.z, -R0, R0.w;\n"
+    "ADD R1.y, -R1.x, c[5].w;\n"
+    "CMP R0.z, -R0, R1.y, R1.x;\n"
+    "ADD R0.w, -R0.z, c[5].z;\n"
+    "CMP R0.x, R0, R0.w, R0.z;\n"
+    "CMP R0.x, -R0.y, -R0, R0;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[4].xyxy;\n"
+    "ADD R0.x, R0, c[0];\n"
+    "MUL R0.x, R0, c[5];\n"
+    "FLR R0.y, R0.x;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "ADD R0.x, R0, -R0.y;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "ADD R2, R0, R1;\n"
+    "MAD result.color, -R0, R1, R2;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_OVERLAY_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[8] = { program.local[0..4],\n"
+    "		{ 0.0020000001, -0.01348047, 0.05747731, 0.1212391 },\n"
+    "		{ 0.1956359, 0.33299461, 0.99999559, 1.570796 },\n"
+    "		{ 3.141593, 0.15915494, 2, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "ABS R0.z, R0.x;\n"
+    "ABS R0.w, R0.y;\n"
+    "ADD R0.w, R0, -R0.z;\n"
+    "ADD R1.x, R0.y, c[5];\n"
+    "ABS R0.w, R0;\n"
+    "CMP R0.y, -R0.w, R0, R1.x;\n"
+    "ABS R0.w, -R0.y;\n"
+    "MAX R1.x, R0.z, R0.w;\n"
+    "RCP R1.y, R1.x;\n"
+    "MIN R1.x, R0.z, R0.w;\n"
+    "MUL R1.x, R1, R1.y;\n"
+    "MUL R1.y, R1.x, R1.x;\n"
+    "MAD R1.z, R1.y, c[5].y, c[5];\n"
+    "MAD R1.z, R1, R1.y, -c[5].w;\n"
+    "MAD R1.z, R1, R1.y, c[6].x;\n"
+    "MAD R1.z, R1, R1.y, -c[6].y;\n"
+    "MAD R1.y, R1.z, R1, c[6].z;\n"
+    "MUL R1.x, R1.y, R1;\n"
+    "ADD R0.z, -R0, R0.w;\n"
+    "ADD R1.y, -R1.x, c[6].w;\n"
+    "CMP R0.z, -R0, R1.y, R1.x;\n"
+    "ADD R0.w, -R0.z, c[7].x;\n"
+    "CMP R0.x, R0, R0.w, R0.z;\n"
+    "CMP R0.x, -R0.y, -R0, R0;\n"
+    "ADD R0.x, R0, c[0];\n"
+    "MUL R0.x, R0, c[7].y;\n"
+    "FLR R0.y, R0.x;\n"
+    "ADD R0.x, R0, -R0.y;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "MUL R1.xy, fragment.position, c[4];\n"
+    "TEX R1, R1, texture[0], 2D;\n"
+    "ADD R3.xyz, R0.w, -R0;\n"
+    "ADD R2.xyz, R1.w, -R1;\n"
+    "MUL R2.xyz, R2, R3;\n"
+    "ADD R2.w, -R1, c[7];\n"
+    "MUL R2.xyz, R2, c[7].z;\n"
+    "MAD R2.xyz, R0.w, R1.w, -R2;\n"
+    "MAD R2.xyz, R0, R2.w, R2;\n"
+    "MUL R3.xyz, R0, R2.w;\n"
+    "MUL R0.xyz, R0, R1;\n"
+    "ADD R2.w, -R0, c[7];\n"
+    "MAD R0.xyz, R0, c[7].z, R3;\n"
+    "MAD R0.xyz, R1, R2.w, R0;\n"
+    "MAD R2.xyz, R1, R2.w, R2;\n"
+    "MUL R1.xyz, R1, c[7].z;\n"
+    "ADD R2.w, R0, R1;\n"
+    "ADD R2.xyz, R2, -R0;\n"
+    "SGE R1.xyz, R1, R1.w;\n"
+    "MAD result.color.xyz, R1, R2, R0;\n"
+    "MAD result.color.w, -R0, R1, R2;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_DARKEN_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[8] = { program.local[0..4],\n"
+    "		{ 0.15915494, 0.0020000001, 3.141593, 1.570796 },\n"
+    "		{ -0.01348047, 0.05747731, 0.1212391, 0.1956359 },\n"
+    "		{ 0.33299461, 0.99999559, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "ABS R0.z, R0.x;\n"
+    "ABS R0.w, R0.y;\n"
+    "ADD R0.w, R0, -R0.z;\n"
+    "ADD R1.x, R0.y, c[5].y;\n"
+    "ABS R0.w, R0;\n"
+    "CMP R0.y, -R0.w, R0, R1.x;\n"
+    "ABS R0.w, -R0.y;\n"
+    "MAX R1.x, R0.z, R0.w;\n"
+    "RCP R1.y, R1.x;\n"
+    "MIN R1.x, R0.z, R0.w;\n"
+    "MUL R1.x, R1, R1.y;\n"
+    "MUL R1.y, R1.x, R1.x;\n"
+    "MAD R1.z, R1.y, c[6].x, c[6].y;\n"
+    "MAD R1.z, R1, R1.y, -c[6];\n"
+    "MAD R1.z, R1, R1.y, c[6].w;\n"
+    "MAD R1.z, R1, R1.y, -c[7].x;\n"
+    "MAD R1.y, R1.z, R1, c[7];\n"
+    "MUL R1.x, R1.y, R1;\n"
+    "ADD R0.z, -R0, R0.w;\n"
+    "ADD R1.y, -R1.x, c[5].w;\n"
+    "CMP R0.z, -R0, R1.y, R1.x;\n"
+    "ADD R0.w, -R0.z, c[5].z;\n"
+    "CMP R0.x, R0, R0.w, R0.z;\n"
+    "CMP R0.x, -R0.y, -R0, R0;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[4].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "ADD R0.x, R0, c[0];\n"
+    "MUL R0.x, R0, c[5];\n"
+    "FLR R0.y, R0.x;\n"
+    "ADD R0.x, R0, -R0.y;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "MUL R2.xyz, R0, R1.w;\n"
+    "MUL R3.xyz, R0.w, R1;\n"
+    "MIN R2.xyz, R2, R3;\n"
+    "ADD R2.w, -R1, c[7].z;\n"
+    "MAD R0.xyz, R0, R2.w, R2;\n"
+    "ADD R2.x, R0.w, R1.w;\n"
+    "ADD R2.y, -R0.w, c[7].z;\n"
+    "MAD result.color.xyz, R1, R2.y, R0;\n"
+    "MAD result.color.w, -R0, R1, R2.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_LIGHTEN_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[8] = { program.local[0..4],\n"
+    "		{ 0.15915494, 0.0020000001, 3.141593, 1.570796 },\n"
+    "		{ -0.01348047, 0.05747731, 0.1212391, 0.1956359 },\n"
+    "		{ 0.33299461, 0.99999559, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "ABS R0.z, R0.x;\n"
+    "ABS R0.w, R0.y;\n"
+    "ADD R0.w, R0, -R0.z;\n"
+    "ADD R1.x, R0.y, c[5].y;\n"
+    "ABS R0.w, R0;\n"
+    "CMP R0.y, -R0.w, R0, R1.x;\n"
+    "ABS R0.w, -R0.y;\n"
+    "MAX R1.x, R0.z, R0.w;\n"
+    "RCP R1.y, R1.x;\n"
+    "MIN R1.x, R0.z, R0.w;\n"
+    "MUL R1.x, R1, R1.y;\n"
+    "MUL R1.y, R1.x, R1.x;\n"
+    "MAD R1.z, R1.y, c[6].x, c[6].y;\n"
+    "MAD R1.z, R1, R1.y, -c[6];\n"
+    "MAD R1.z, R1, R1.y, c[6].w;\n"
+    "MAD R1.z, R1, R1.y, -c[7].x;\n"
+    "MAD R1.y, R1.z, R1, c[7];\n"
+    "MUL R1.x, R1.y, R1;\n"
+    "ADD R0.z, -R0, R0.w;\n"
+    "ADD R1.y, -R1.x, c[5].w;\n"
+    "CMP R0.z, -R0, R1.y, R1.x;\n"
+    "ADD R0.w, -R0.z, c[5].z;\n"
+    "CMP R0.x, R0, R0.w, R0.z;\n"
+    "CMP R0.x, -R0.y, -R0, R0;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[4].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "ADD R0.x, R0, c[0];\n"
+    "MUL R0.x, R0, c[5];\n"
+    "FLR R0.y, R0.x;\n"
+    "ADD R0.x, R0, -R0.y;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "MUL R2.xyz, R0, R1.w;\n"
+    "MUL R3.xyz, R0.w, R1;\n"
+    "MAX R2.xyz, R2, R3;\n"
+    "ADD R2.w, -R1, c[7].z;\n"
+    "MAD R0.xyz, R0, R2.w, R2;\n"
+    "ADD R2.x, R0.w, R1.w;\n"
+    "ADD R2.y, -R0.w, c[7].z;\n"
+    "MAD result.color.xyz, R1, R2.y, R0;\n"
+    "MAD result.color.w, -R0, R1, R2.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_COLORDODGE_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[8] = { program.local[0..4],\n"
+    "		{ 0.0020000001, -0.01348047, 0.05747731, 0.1212391 },\n"
+    "		{ 0.1956359, 0.33299461, 0.99999559, 1.570796 },\n"
+    "		{ 3.141593, 0.15915494, 1, 1e-006 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "ABS R0.z, R0.x;\n"
+    "ABS R0.w, R0.y;\n"
+    "ADD R0.w, R0, -R0.z;\n"
+    "ADD R1.x, R0.y, c[5];\n"
+    "ABS R0.w, R0;\n"
+    "CMP R0.y, -R0.w, R0, R1.x;\n"
+    "ABS R0.w, -R0.y;\n"
+    "MAX R1.x, R0.z, R0.w;\n"
+    "RCP R1.y, R1.x;\n"
+    "MIN R1.x, R0.z, R0.w;\n"
+    "MUL R1.x, R1, R1.y;\n"
+    "MUL R1.y, R1.x, R1.x;\n"
+    "MAD R1.z, R1.y, c[5].y, c[5];\n"
+    "MAD R1.z, R1, R1.y, -c[5].w;\n"
+    "MAD R1.z, R1, R1.y, c[6].x;\n"
+    "MAD R1.z, R1, R1.y, -c[6].y;\n"
+    "MAD R1.y, R1.z, R1, c[6].z;\n"
+    "MUL R1.x, R1.y, R1;\n"
+    "ADD R1.y, -R1.x, c[6].w;\n"
+    "ADD R0.z, -R0, R0.w;\n"
+    "CMP R0.z, -R0, R1.y, R1.x;\n"
+    "ADD R0.w, -R0.z, c[7].x;\n"
+    "CMP R0.x, R0, R0.w, R0.z;\n"
+    "CMP R0.x, -R0.y, -R0, R0;\n"
+    "ADD R0.x, R0, c[0];\n"
+    "MUL R0.x, R0, c[7].y;\n"
+    "FLR R0.y, R0.x;\n"
+    "ADD R0.x, R0, -R0.y;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "MAX R1.x, R0.w, c[7].w;\n"
+    "RCP R1.x, R1.x;\n"
+    "MAD R1.xyz, -R0, R1.x, c[7].z;\n"
+    "MAX R2.xyz, R1, c[7].w;\n"
+    "MUL R1.xy, fragment.position, c[4];\n"
+    "TEX R1, R1, texture[0], 2D;\n"
+    "ADD R2.w, -R0, c[7].z;\n"
+    "MUL R3.xyz, R1, R2.w;\n"
+    "ADD R2.w, -R1, c[7].z;\n"
+    "MAD R3.xyz, R0, R2.w, R3;\n"
+    "MUL R1.xyz, R0.w, R1;\n"
+    "MAD R0.xyz, R0, R1.w, R1;\n"
+    "MUL R2.w, R0, R1;\n"
+    "RCP R2.x, R2.x;\n"
+    "RCP R2.y, R2.y;\n"
+    "RCP R2.z, R2.z;\n"
+    "MAD R2.xyz, R1, R2, R3;\n"
+    "MAD R3.xyz, R0.w, R1.w, R3;\n"
+    "ADD R1.x, R0.w, R1.w;\n"
+    "ADD R3.xyz, R3, -R2;\n"
+    "SGE R0.xyz, R0, R2.w;\n"
+    "MAD result.color.xyz, R0, R3, R2;\n"
+    "MAD result.color.w, -R0, R1, R1.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_COLORBURN_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[8] = { program.local[0..4],\n"
+    "		{ 0.0020000001, -0.01348047, 0.05747731, 0.1212391 },\n"
+    "		{ 0.1956359, 0.33299461, 0.99999559, 1.570796 },\n"
+    "		{ 3.141593, 0.15915494, 1, 9.9999997e-006 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "TEMP R5;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "ABS R0.w, R0.x;\n"
+    "ABS R0.z, R0.y;\n"
+    "ADD R0.z, R0, -R0.w;\n"
+    "ADD R1.x, R0.y, c[5];\n"
+    "ABS R0.z, R0;\n"
+    "CMP R0.y, -R0.z, R0, R1.x;\n"
+    "ABS R0.z, -R0.y;\n"
+    "MAX R1.x, R0.w, R0.z;\n"
+    "RCP R1.y, R1.x;\n"
+    "MIN R1.x, R0.w, R0.z;\n"
+    "MUL R1.x, R1, R1.y;\n"
+    "MUL R1.y, R1.x, R1.x;\n"
+    "MAD R1.z, R1.y, c[5].y, c[5];\n"
+    "MAD R1.z, R1, R1.y, -c[5].w;\n"
+    "MAD R1.z, R1, R1.y, c[6].x;\n"
+    "MAD R1.z, R1, R1.y, -c[6].y;\n"
+    "MAD R1.y, R1.z, R1, c[6].z;\n"
+    "MUL R1.x, R1.y, R1;\n"
+    "ADD R1.y, -R1.x, c[6].w;\n"
+    "ADD R0.z, -R0.w, R0;\n"
+    "CMP R0.z, -R0, R1.y, R1.x;\n"
+    "ADD R0.w, -R0.z, c[7].x;\n"
+    "CMP R0.x, R0, R0.w, R0.z;\n"
+    "CMP R0.x, -R0.y, -R0, R0;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[4].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "ADD R0.x, R0, c[0];\n"
+    "MUL R0.x, R0, c[7].y;\n"
+    "FLR R0.y, R0.x;\n"
+    "ADD R0.x, R0, -R0.y;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "MUL R2.xyz, R0.w, R1;\n"
+    "MAD R3.xyz, R0, R1.w, R2;\n"
+    "ADD R2.w, -R1, c[7].z;\n"
+    "MAD R2.xyz, -R0.w, R1.w, R3;\n"
+    "MUL R4.xyz, R0.w, R2;\n"
+    "MAX R2.xyz, R0, c[7].w;\n"
+    "MUL R5.xyz, R0, R2.w;\n"
+    "ADD R3.w, -R0, c[7].z;\n"
+    "RCP R2.x, R2.x;\n"
+    "RCP R2.y, R2.y;\n"
+    "RCP R2.z, R2.z;\n"
+    "MAD R2.xyz, R4, R2, R5;\n"
+    "MUL R4.xyz, R1, R3.w;\n"
+    "MAD R1.xyz, R1, R3.w, R2;\n"
+    "MAD R0.xyz, R0, R2.w, R4;\n"
+    "MUL R2.x, R0.w, R1.w;\n"
+    "ADD R2.w, R0, R1;\n"
+    "ADD R1.xyz, R1, -R0;\n"
+    "SGE R2.xyz, R3, R2.x;\n"
+    "MAD result.color.xyz, R2, R1, R0;\n"
+    "MAD result.color.w, -R0, R1, R2;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_HARDLIGHT_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[8] = { program.local[0..4],\n"
+    "		{ 0.0020000001, -0.01348047, 0.05747731, 0.1212391 },\n"
+    "		{ 0.1956359, 0.33299461, 0.99999559, 1.570796 },\n"
+    "		{ 3.141593, 0.15915494, 2, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "ABS R0.z, R0.x;\n"
+    "ABS R0.w, R0.y;\n"
+    "ADD R0.w, R0, -R0.z;\n"
+    "ADD R1.x, R0.y, c[5];\n"
+    "ABS R0.w, R0;\n"
+    "CMP R0.y, -R0.w, R0, R1.x;\n"
+    "ABS R0.w, -R0.y;\n"
+    "MAX R1.x, R0.z, R0.w;\n"
+    "RCP R1.y, R1.x;\n"
+    "MIN R1.x, R0.z, R0.w;\n"
+    "MUL R1.x, R1, R1.y;\n"
+    "MUL R1.y, R1.x, R1.x;\n"
+    "MAD R1.z, R1.y, c[5].y, c[5];\n"
+    "MAD R1.z, R1, R1.y, -c[5].w;\n"
+    "MAD R1.z, R1, R1.y, c[6].x;\n"
+    "MAD R1.z, R1, R1.y, -c[6].y;\n"
+    "MAD R1.y, R1.z, R1, c[6].z;\n"
+    "MUL R1.x, R1.y, R1;\n"
+    "ADD R0.z, -R0, R0.w;\n"
+    "ADD R1.y, -R1.x, c[6].w;\n"
+    "CMP R0.z, -R0, R1.y, R1.x;\n"
+    "ADD R0.w, -R0.z, c[7].x;\n"
+    "CMP R0.x, R0, R0.w, R0.z;\n"
+    "CMP R0.x, -R0.y, -R0, R0;\n"
+    "ADD R0.x, R0, c[0];\n"
+    "MUL R0.x, R0, c[7].y;\n"
+    "FLR R0.y, R0.x;\n"
+    "ADD R0.x, R0, -R0.y;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "MUL R1.xy, fragment.position, c[4];\n"
+    "TEX R1, R1, texture[0], 2D;\n"
+    "ADD R2.w, -R1, c[7];\n"
+    "ADD R3.xyz, R0.w, -R0;\n"
+    "ADD R2.xyz, R1.w, -R1;\n"
+    "MUL R2.xyz, R2, R3;\n"
+    "MUL R2.xyz, R2, c[7].z;\n"
+    "MAD R2.xyz, R0.w, R1.w, -R2;\n"
+    "MUL R4.xyz, R0, R2.w;\n"
+    "MUL R3.xyz, R0, R1;\n"
+    "MAD R2.xyz, R0, R2.w, R2;\n"
+    "ADD R2.w, -R0, c[7];\n"
+    "MUL R0.xyz, R0, c[7].z;\n"
+    "MAD R2.xyz, R1, R2.w, R2;\n"
+    "MAD R3.xyz, R3, c[7].z, R4;\n"
+    "MAD R1.xyz, R1, R2.w, R3;\n"
+    "ADD R2.w, R0, R1;\n"
+    "ADD R2.xyz, R2, -R1;\n"
+    "SGE R0.xyz, R0, R0.w;\n"
+    "MAD result.color.xyz, R0, R2, R1;\n"
+    "MAD result.color.w, -R0, R1, R2;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_SOFTLIGHT_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[10] = { program.local[0..4],\n"
+    "		{ 0.0020000001, -0.01348047, 0.05747731, 0.1212391 },\n"
+    "		{ 0.1956359, 0.33299461, 0.99999559, 1.570796 },\n"
+    "		{ 3.141593, 0.15915494, 1, 2 },\n"
+    "		{ 9.9999997e-006, 4, 16, 12 },\n"
+    "		{ 3 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "TEMP R5;\n"
+    "TEMP R6;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "ABS R0.w, R0.x;\n"
+    "ABS R0.z, R0.y;\n"
+    "ADD R0.z, R0, -R0.w;\n"
+    "ADD R1.x, R0.y, c[5];\n"
+    "ABS R0.z, R0;\n"
+    "CMP R0.y, -R0.z, R0, R1.x;\n"
+    "ABS R0.z, -R0.y;\n"
+    "MAX R1.x, R0.w, R0.z;\n"
+    "RCP R1.y, R1.x;\n"
+    "MIN R1.x, R0.w, R0.z;\n"
+    "MUL R1.x, R1, R1.y;\n"
+    "MUL R1.y, R1.x, R1.x;\n"
+    "MAD R1.z, R1.y, c[5].y, c[5];\n"
+    "MAD R1.z, R1, R1.y, -c[5].w;\n"
+    "MAD R1.z, R1, R1.y, c[6].x;\n"
+    "MAD R1.z, R1, R1.y, -c[6].y;\n"
+    "MAD R1.y, R1.z, R1, c[6].z;\n"
+    "MUL R1.x, R1.y, R1;\n"
+    "ADD R1.y, -R1.x, c[6].w;\n"
+    "ADD R0.z, -R0.w, R0;\n"
+    "CMP R0.z, -R0, R1.y, R1.x;\n"
+    "ADD R0.w, -R0.z, c[7].x;\n"
+    "CMP R0.x, R0, R0.w, R0.z;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[4].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "CMP R0.x, -R0.y, -R0, R0;\n"
+    "MAX R0.z, R1.w, c[8].x;\n"
+    "RCP R2.x, R0.z;\n"
+    "MUL R3.xyz, R1, R2.x;\n"
+    "MAD R4.xyz, R3, c[8].z, -c[8].w;\n"
+    "ADD R0.x, R0, c[0];\n"
+    "MUL R0.x, R0, c[7].y;\n"
+    "FLR R0.y, R0.x;\n"
+    "ADD R0.x, R0, -R0.y;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "MAD R2.xyz, R0, c[7].w, -R0.w;\n"
+    "MAD R4.xyz, R3, R4, c[9].x;\n"
+    "MUL R5.xyz, R1.w, R2;\n"
+    "MUL R6.xyz, R5, R4;\n"
+    "RSQ R2.w, R3.x;\n"
+    "RCP R4.x, R2.w;\n"
+    "RSQ R2.w, R3.y;\n"
+    "RSQ R3.w, R3.z;\n"
+    "RCP R4.y, R2.w;\n"
+    "RCP R4.z, R3.w;\n"
+    "ADD R4.xyz, -R3, R4;\n"
+    "MUL R6.xyz, R3, R6;\n"
+    "MUL R4.xyz, R5, R4;\n"
+    "ADD R3.xyz, -R3, c[7].z;\n"
+    "MAD R2.xyz, R2, R3, R0.w;\n"
+    "MUL R3.xyz, R0, c[7].w;\n"
+    "MAD R5.xyz, R0.w, R1, R6;\n"
+    "MAD R4.xyz, R0.w, R1, R4;\n"
+    "ADD R6.xyz, R4, -R5;\n"
+    "MUL R4.xyz, R1, c[8].y;\n"
+    "SGE R4.xyz, R4, R1.w;\n"
+    "MAD R4.xyz, R4, R6, R5;\n"
+    "MAD R4.xyz, -R1, R2, R4;\n"
+    "MUL R2.xyz, R1, R2;\n"
+    "SGE R3.xyz, R3, R0.w;\n"
+    "MAD R2.xyz, R3, R4, R2;\n"
+    "ADD R2.w, -R1, c[7].z;\n"
+    "MAD R2.xyz, R0, R2.w, R2;\n"
+    "ADD R0.x, R0.w, R1.w;\n"
+    "ADD R0.y, -R0.w, c[7].z;\n"
+    "MAD result.color.xyz, R1, R0.y, R2;\n"
+    "MAD result.color.w, -R0, R1, R0.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_DIFFERENCE_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[8] = { program.local[0..4],\n"
+    "		{ 0.15915494, 0.0020000001, 3.141593, 1.570796 },\n"
+    "		{ -0.01348047, 0.05747731, 0.1212391, 0.1956359 },\n"
+    "		{ 0.33299461, 0.99999559, 2 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "ABS R0.z, R0.x;\n"
+    "ABS R0.w, R0.y;\n"
+    "ADD R0.w, R0, -R0.z;\n"
+    "ADD R1.x, R0.y, c[5].y;\n"
+    "ABS R0.w, R0;\n"
+    "CMP R0.y, -R0.w, R0, R1.x;\n"
+    "ABS R0.w, -R0.y;\n"
+    "MAX R1.x, R0.z, R0.w;\n"
+    "RCP R1.y, R1.x;\n"
+    "MIN R1.x, R0.z, R0.w;\n"
+    "MUL R1.x, R1, R1.y;\n"
+    "MUL R1.y, R1.x, R1.x;\n"
+    "MAD R1.z, R1.y, c[6].x, c[6].y;\n"
+    "MAD R1.z, R1, R1.y, -c[6];\n"
+    "MAD R1.z, R1, R1.y, c[6].w;\n"
+    "MAD R1.z, R1, R1.y, -c[7].x;\n"
+    "MAD R1.y, R1.z, R1, c[7];\n"
+    "MUL R1.x, R1.y, R1;\n"
+    "ADD R0.z, -R0, R0.w;\n"
+    "ADD R1.y, -R1.x, c[5].w;\n"
+    "CMP R0.z, -R0, R1.y, R1.x;\n"
+    "ADD R0.w, -R0.z, c[5].z;\n"
+    "CMP R0.x, R0, R0.w, R0.z;\n"
+    "CMP R0.x, -R0.y, -R0, R0;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[4].xyxy;\n"
+    "ADD R0.x, R0, c[0];\n"
+    "MUL R0.x, R0, c[5];\n"
+    "FLR R0.y, R0.x;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "ADD R0.x, R0, -R0.y;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "MUL R2.xyz, R0, R1.w;\n"
+    "MUL R3.xyz, R0.w, R1;\n"
+    "ADD R0.xyz, R0, R1;\n"
+    "MIN R2.xyz, R2, R3;\n"
+    "ADD R1.x, R0.w, R1.w;\n"
+    "MAD result.color.xyz, -R2, c[7].z, R0;\n"
+    "MAD result.color.w, -R0, R1, R1.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_EXCLUSION_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[8] = { program.local[0..4],\n"
+    "		{ 0.15915494, 0.0020000001, 3.141593, 1.570796 },\n"
+    "		{ -0.01348047, 0.05747731, 0.1212391, 0.1956359 },\n"
+    "		{ 0.33299461, 0.99999559, 2, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "ABS R0.z, R0.x;\n"
+    "ABS R0.w, R0.y;\n"
+    "ADD R0.w, R0, -R0.z;\n"
+    "ADD R1.x, R0.y, c[5].y;\n"
+    "ABS R0.w, R0;\n"
+    "CMP R0.y, -R0.w, R0, R1.x;\n"
+    "ABS R0.w, -R0.y;\n"
+    "MAX R1.x, R0.z, R0.w;\n"
+    "RCP R1.y, R1.x;\n"
+    "MIN R1.x, R0.z, R0.w;\n"
+    "MUL R1.x, R1, R1.y;\n"
+    "MUL R1.y, R1.x, R1.x;\n"
+    "MAD R1.z, R1.y, c[6].x, c[6].y;\n"
+    "MAD R1.z, R1, R1.y, -c[6];\n"
+    "MAD R1.z, R1, R1.y, c[6].w;\n"
+    "MAD R1.z, R1, R1.y, -c[7].x;\n"
+    "MAD R1.y, R1.z, R1, c[7];\n"
+    "MUL R1.x, R1.y, R1;\n"
+    "ADD R0.z, -R0, R0.w;\n"
+    "ADD R1.y, -R1.x, c[5].w;\n"
+    "CMP R0.z, -R0, R1.y, R1.x;\n"
+    "ADD R0.w, -R0.z, c[5].z;\n"
+    "CMP R0.x, R0, R0.w, R0.z;\n"
+    "CMP R0.x, -R0.y, -R0, R0;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[4].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "ADD R0.x, R0, c[0];\n"
+    "MUL R0.x, R0, c[5];\n"
+    "FLR R0.y, R0.x;\n"
+    "ADD R0.x, R0, -R0.y;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "MUL R2.xyz, R0.w, R1;\n"
+    "MAD R3.xyz, R0, R1.w, R2;\n"
+    "MUL R2.xyz, R0, R1;\n"
+    "MAD R2.xyz, -R2, c[7].z, R3;\n"
+    "ADD R2.w, -R1, c[7];\n"
+    "MAD R0.xyz, R0, R2.w, R2;\n"
+    "ADD R2.x, R0.w, R1.w;\n"
+    "ADD R2.y, -R0.w, c[7].w;\n"
+    "MAD result.color.xyz, R1, R2.y, R0;\n"
+    "MAD result.color.w, -R0, R1, R2.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODE_BLEND_MODE_MASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[10] = { program.local[0..6],\n"
+    "		{ 0.15915494, 0.0020000001, 3.141593, 1.570796 },\n"
+    "		{ -0.01348047, 0.05747731, 0.1212391, 0.1956359 },\n"
+    "		{ 0.33299461, 0.99999559 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "ABS R0.z, R0.x;\n"
+    "ABS R0.w, R0.y;\n"
+    "ADD R0.w, R0, -R0.z;\n"
+    "ADD R1.x, R0.y, c[7].y;\n"
+    "ABS R0.w, R0;\n"
+    "CMP R0.y, -R0.w, R0, R1.x;\n"
+    "ABS R0.w, -R0.y;\n"
+    "MAX R1.x, R0.z, R0.w;\n"
+    "RCP R1.y, R1.x;\n"
+    "MIN R1.x, R0.z, R0.w;\n"
+    "MUL R1.x, R1, R1.y;\n"
+    "MUL R1.y, R1.x, R1.x;\n"
+    "MAD R1.z, R1.y, c[8].x, c[8].y;\n"
+    "MAD R1.z, R1, R1.y, -c[8];\n"
+    "MAD R1.z, R1, R1.y, c[8].w;\n"
+    "MAD R1.z, R1, R1.y, -c[9].x;\n"
+    "MAD R1.y, R1.z, R1, c[9];\n"
+    "MUL R1.x, R1.y, R1;\n"
+    "ADD R1.y, -R1.x, c[7].w;\n"
+    "ADD R0.z, -R0, R0.w;\n"
+    "CMP R0.z, -R0, R1.y, R1.x;\n"
+    "ADD R0.w, -R0.z, c[7].z;\n"
+    "CMP R0.x, R0, R0.w, R0.z;\n"
+    "CMP R0.x, -R0.y, -R0, R0;\n"
+    "ADD R0.x, R0, c[0];\n"
+    "MUL R1.x, R0, c[7];\n"
+    "FLR R1.y, R1.x;\n"
+    "ADD R0.zw, fragment.position.xyxy, c[5].xyxy;\n"
+    "MUL R0.xy, R0.zwzw, c[4];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "ADD R1.x, R1, -R1.y;\n"
+    "DP4 R1.y, R0, c[6];\n"
+    "TEX R0, R1, texture[1], 1D;\n"
+    "MUL result.color, R0, R1.y;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODE_BLEND_MODE_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[7] = { program.local[0..3],\n"
+    "		{ 0.15915494, 0.0020000001, 3.141593, 1.570796 },\n"
+    "		{ -0.01348047, 0.05747731, 0.1212391, 0.1956359 },\n"
+    "		{ 0.33299461, 0.99999559 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "ABS R0.z, R0.x;\n"
+    "ABS R0.w, R0.y;\n"
+    "ADD R0.w, R0, -R0.z;\n"
+    "ADD R1.x, R0.y, c[4].y;\n"
+    "ABS R0.w, R0;\n"
+    "CMP R0.y, -R0.w, R0, R1.x;\n"
+    "ABS R0.w, -R0.y;\n"
+    "MAX R1.x, R0.z, R0.w;\n"
+    "RCP R1.y, R1.x;\n"
+    "MIN R1.x, R0.z, R0.w;\n"
+    "MUL R1.x, R1, R1.y;\n"
+    "MUL R1.y, R1.x, R1.x;\n"
+    "MAD R1.z, R1.y, c[5].x, c[5].y;\n"
+    "MAD R1.z, R1, R1.y, -c[5];\n"
+    "MAD R1.z, R1, R1.y, c[5].w;\n"
+    "MAD R1.z, R1, R1.y, -c[6].x;\n"
+    "MAD R1.y, R1.z, R1, c[6];\n"
+    "MUL R1.x, R1.y, R1;\n"
+    "ADD R0.z, -R0, R0.w;\n"
+    "ADD R1.y, -R1.x, c[4].w;\n"
+    "CMP R0.z, -R0, R1.y, R1.x;\n"
+    "ADD R0.w, -R0.z, c[4].z;\n"
+    "CMP R0.x, R0, R0.w, R0.z;\n"
+    "CMP R0.x, -R0.y, -R0, R0;\n"
+    "ADD R0.x, R0, c[0];\n"
+    "MUL R0.x, R0, c[4];\n"
+    "FLR R0.y, R0.x;\n"
+    "ADD R0.x, R0, -R0.y;\n"
+    "TEX result.color, R0, texture[0], 1D;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_SIMPLE_PORTER_DUFF =
+    "!!ARBfp1.0\n"
+    "PARAM c[11] = { program.local[0..9],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, c[0].xyxy;\n"
+    "ADD R1.x, R0.z, R0.w;\n"
+    "MUL R0.xy, fragment.position, c[7];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "MUL R1.x, R1, c[0].z;\n"
+    "TEX R1, R1, texture[2], 1D;\n"
+    "MUL R2.xyz, R0, c[4].y;\n"
+    "MUL R3.xyz, R1.w, R2;\n"
+    "MUL R2.xyz, R1, c[4].x;\n"
+    "MAD R2.xyz, R0.w, R2, R3;\n"
+    "ADD R3.xy, fragment.position, c[8];\n"
+    "ADD R2.w, -R0, c[10].x;\n"
+    "MUL R1.xyz, R1, c[5].y;\n"
+    "MAD R2.xyz, R2.w, R1, R2;\n"
+    "MUL R1.xyz, R0, c[5].z;\n"
+    "ADD R3.z, -R1.w, c[10].x;\n"
+    "MAD R2.xyz, R3.z, R1, R2;\n"
+    "MUL R1.y, R1.w, R2.w;\n"
+    "MUL R1.x, R1.w, R0.w;\n"
+    "MUL R1.z, R0.w, R3;\n"
+    "DP3 R2.w, R1, c[5];\n"
+    "MUL R3.xy, R3, c[6];\n"
+    "TEX R1, R3, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[9];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_MULTIPLY =
+    "!!ARBfp1.0\n"
+    "PARAM c[9] = { program.local[0..7],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, c[0].xyxy;\n"
+    "ADD R1.x, R0.z, R0.w;\n"
+    "MUL R0.xy, fragment.position, c[5];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "MUL R1.x, R1, c[0].z;\n"
+    "TEX R1, R1, texture[2], 1D;\n"
+    "ADD R2.x, -R0.w, c[8];\n"
+    "MUL R2.xyz, R1, R2.x;\n"
+    "MAD R1.xyz, R1, R0, R2;\n"
+    "ADD R2.x, -R1.w, c[8];\n"
+    "MAD R2.xyz, R0, R2.x, R1;\n"
+    "ADD R1.z, R1.w, R0.w;\n"
+    "MAD R2.w, -R1, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[6];\n"
+    "MUL R1.xy, R1, c[4];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[7];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_SCREEN =
+    "!!ARBfp1.0\n"
+    "PARAM c[8] = { program.local[0..7] };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.z, R0.x, c[0];\n"
+    "ADD R3.xy, fragment.position, c[6];\n"
+    "TEX R1, R0.z, texture[2], 1D;\n"
+    "MUL R0.xy, fragment.position, c[5];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "ADD R2, R1, R0;\n"
+    "MAD R2, -R1, R0, R2;\n"
+    "MUL R3.xy, R3, c[4];\n"
+    "TEX R1, R3, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[7];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_OVERLAY =
+    "!!ARBfp1.0\n"
+    "PARAM c[9] = { program.local[0..7],\n"
+    "		{ 2, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.x, R0, c[0].z;\n"
+    "TEX R0, R0, texture[2], 1D;\n"
+    "MUL R1.xy, fragment.position, c[5];\n"
+    "TEX R1, R1, texture[0], 2D;\n"
+    "ADD R2.w, -R1, c[8].y;\n"
+    "ADD R3.xyz, R0.w, -R0;\n"
+    "ADD R2.xyz, R1.w, -R1;\n"
+    "MUL R2.xyz, R2, R3;\n"
+    "MUL R2.xyz, R2, c[8].x;\n"
+    "MAD R2.xyz, R0.w, R1.w, -R2;\n"
+    "MUL R4.xyz, R0, R2.w;\n"
+    "MUL R3.xyz, R0, R1;\n"
+    "MAD R0.xyz, R0, R2.w, R2;\n"
+    "ADD R2.x, -R0.w, c[8].y;\n"
+    "MAD R3.xyz, R3, c[8].x, R4;\n"
+    "MAD R3.xyz, R1, R2.x, R3;\n"
+    "MAD R0.xyz, R1, R2.x, R0;\n"
+    "MUL R2.xyz, R1, c[8].x;\n"
+    "ADD R0.xyz, R0, -R3;\n"
+    "SGE R2.xyz, R2, R1.w;\n"
+    "MAD R2.xyz, R2, R0, R3;\n"
+    "ADD R0.z, R0.w, R1.w;\n"
+    "MAD R2.w, -R0, R1, R0.z;\n"
+    "ADD R0.xy, fragment.position, c[6];\n"
+    "MUL R0.xy, R0, c[4];\n"
+    "TEX R0, R0, texture[1], 2D;\n"
+    "ADD R2, R2, -R1;\n"
+    "DP4 R0.x, R0, c[7];\n"
+    "MAD result.color, R0.x, R2, R1;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_DARKEN =
+    "!!ARBfp1.0\n"
+    "PARAM c[9] = { program.local[0..7],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.z, R0.x, R0.y;\n"
+    "MUL R1.x, R0.z, c[0].z;\n"
+    "MUL R0.xy, fragment.position, c[5];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "TEX R1, R1, texture[2], 1D;\n"
+    "MUL R3.xyz, R1.w, R0;\n"
+    "MUL R2.xyz, R1, R0.w;\n"
+    "MIN R2.xyz, R2, R3;\n"
+    "ADD R2.w, -R0, c[8].x;\n"
+    "MAD R1.xyz, R1, R2.w, R2;\n"
+    "ADD R2.x, -R1.w, c[8];\n"
+    "MAD R2.xyz, R0, R2.x, R1;\n"
+    "ADD R1.z, R1.w, R0.w;\n"
+    "MAD R2.w, -R1, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[6];\n"
+    "MUL R1.xy, R1, c[4];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[7];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_LIGHTEN =
+    "!!ARBfp1.0\n"
+    "PARAM c[9] = { program.local[0..7],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.z, R0.x, R0.y;\n"
+    "MUL R1.x, R0.z, c[0].z;\n"
+    "MUL R0.xy, fragment.position, c[5];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "TEX R1, R1, texture[2], 1D;\n"
+    "MUL R3.xyz, R1.w, R0;\n"
+    "MUL R2.xyz, R1, R0.w;\n"
+    "MAX R2.xyz, R2, R3;\n"
+    "ADD R2.w, -R0, c[8].x;\n"
+    "MAD R1.xyz, R1, R2.w, R2;\n"
+    "ADD R2.x, -R1.w, c[8];\n"
+    "MAD R2.xyz, R0, R2.x, R1;\n"
+    "ADD R1.z, R1.w, R0.w;\n"
+    "MAD R2.w, -R1, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[6];\n"
+    "MUL R1.xy, R1, c[4];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[7];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_COLORDODGE =
+    "!!ARBfp1.0\n"
+    "PARAM c[9] = { program.local[0..7],\n"
+    "		{ 1, 1e-006 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.x, R0, c[0].z;\n"
+    "TEX R0, R0, texture[2], 1D;\n"
+    "MAX R1.x, R0.w, c[8].y;\n"
+    "RCP R1.x, R1.x;\n"
+    "MAD R2.xyz, -R0, R1.x, c[8].x;\n"
+    "MAX R2.xyz, R2, c[8].y;\n"
+    "MUL R1.xy, fragment.position, c[5];\n"
+    "TEX R1, R1, texture[0], 2D;\n"
+    "ADD R2.w, -R0, c[8].x;\n"
+    "MUL R3.xyz, R1, R2.w;\n"
+    "ADD R2.w, -R1, c[8].x;\n"
+    "MAD R4.xyz, R0, R2.w, R3;\n"
+    "MUL R3.xyz, R0.w, R1;\n"
+    "MUL R2.w, R0, R1;\n"
+    "MAD R0.xyz, R0, R1.w, R3;\n"
+    "SGE R0.xyz, R0, R2.w;\n"
+    "RCP R2.x, R2.x;\n"
+    "RCP R2.y, R2.y;\n"
+    "RCP R2.z, R2.z;\n"
+    "MAD R2.xyz, R3, R2, R4;\n"
+    "MAD R4.xyz, R0.w, R1.w, R4;\n"
+    "ADD R4.xyz, R4, -R2;\n"
+    "MAD R2.xyz, R0, R4, R2;\n"
+    "ADD R0.z, R0.w, R1.w;\n"
+    "MAD R2.w, -R0, R1, R0.z;\n"
+    "ADD R0.xy, fragment.position, c[6];\n"
+    "MUL R0.xy, R0, c[4];\n"
+    "TEX R0, R0, texture[1], 2D;\n"
+    "ADD R2, R2, -R1;\n"
+    "DP4 R0.x, R0, c[7];\n"
+    "MAD result.color, R0.x, R2, R1;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_COLORBURN =
+    "!!ARBfp1.0\n"
+    "PARAM c[9] = { program.local[0..7],\n"
+    "		{ 1, 9.9999997e-006 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "TEMP R5;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[5].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "MUL R0.x, R0, c[0].z;\n"
+    "TEX R0, R0, texture[2], 1D;\n"
+    "MUL R2.xyz, R0.w, R1;\n"
+    "MAD R3.xyz, R0, R1.w, R2;\n"
+    "MAD R2.xyz, -R0.w, R1.w, R3;\n"
+    "MUL R4.xyz, R0.w, R2;\n"
+    "MAX R2.xyz, R0, c[8].y;\n"
+    "ADD R2.w, -R1, c[8].x;\n"
+    "MUL R5.xyz, R0, R2.w;\n"
+    "ADD R3.w, -R0, c[8].x;\n"
+    "RCP R2.x, R2.x;\n"
+    "RCP R2.y, R2.y;\n"
+    "RCP R2.z, R2.z;\n"
+    "MAD R2.xyz, R4, R2, R5;\n"
+    "MUL R4.xyz, R1, R3.w;\n"
+    "MAD R0.xyz, R0, R2.w, R4;\n"
+    "MUL R2.w, R0, R1;\n"
+    "MAD R2.xyz, R1, R3.w, R2;\n"
+    "ADD R2.xyz, R2, -R0;\n"
+    "SGE R3.xyz, R3, R2.w;\n"
+    "MAD R2.xyz, R3, R2, R0;\n"
+    "ADD R0.z, R0.w, R1.w;\n"
+    "MAD R2.w, -R0, R1, R0.z;\n"
+    "ADD R0.xy, fragment.position, c[6];\n"
+    "MUL R0.xy, R0, c[4];\n"
+    "TEX R0, R0, texture[1], 2D;\n"
+    "ADD R2, R2, -R1;\n"
+    "DP4 R0.x, R0, c[7];\n"
+    "MAD result.color, R0.x, R2, R1;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_HARDLIGHT =
+    "!!ARBfp1.0\n"
+    "PARAM c[9] = { program.local[0..7],\n"
+    "		{ 2, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.x, R0, c[0].z;\n"
+    "TEX R0, R0, texture[2], 1D;\n"
+    "MUL R1.xy, fragment.position, c[5];\n"
+    "TEX R1, R1, texture[0], 2D;\n"
+    "ADD R2.w, -R1, c[8].y;\n"
+    "ADD R3.xyz, R0.w, -R0;\n"
+    "ADD R2.xyz, R1.w, -R1;\n"
+    "MUL R2.xyz, R2, R3;\n"
+    "MUL R2.xyz, R2, c[8].x;\n"
+    "MAD R2.xyz, R0.w, R1.w, -R2;\n"
+    "MUL R4.xyz, R0, R2.w;\n"
+    "MAD R2.xyz, R0, R2.w, R2;\n"
+    "MUL R3.xyz, R0, R1;\n"
+    "ADD R2.w, -R0, c[8].y;\n"
+    "MAD R3.xyz, R3, c[8].x, R4;\n"
+    "MUL R0.xyz, R0, c[8].x;\n"
+    "SGE R0.xyz, R0, R0.w;\n"
+    "MAD R3.xyz, R1, R2.w, R3;\n"
+    "MAD R2.xyz, R1, R2.w, R2;\n"
+    "ADD R2.xyz, R2, -R3;\n"
+    "MAD R2.xyz, R0, R2, R3;\n"
+    "ADD R0.z, R0.w, R1.w;\n"
+    "MAD R2.w, -R0, R1, R0.z;\n"
+    "ADD R0.xy, fragment.position, c[6];\n"
+    "MUL R0.xy, R0, c[4];\n"
+    "TEX R0, R0, texture[1], 2D;\n"
+    "ADD R2, R2, -R1;\n"
+    "DP4 R0.x, R0, c[7];\n"
+    "MAD result.color, R0.x, R2, R1;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_SOFTLIGHT =
+    "!!ARBfp1.0\n"
+    "PARAM c[10] = { program.local[0..7],\n"
+    "		{ 1, 2, 9.9999997e-006, 4 },\n"
+    "		{ 16, 12, 3 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "TEMP R5;\n"
+    "TEMP R6;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R1.xy, fragment.position, c[5];\n"
+    "TEX R1, R1, texture[0], 2D;\n"
+    "MAX R0.z, R1.w, c[8];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R3.xyz, R1, R0.z;\n"
+    "MAD R2.xyz, R3, c[9].x, -c[9].y;\n"
+    "MUL R0.x, R0, c[0].z;\n"
+    "TEX R0, R0, texture[2], 1D;\n"
+    "MAD R4.xyz, R3, R2, c[9].z;\n"
+    "MAD R2.xyz, R0, c[8].y, -R0.w;\n"
+    "MUL R5.xyz, R1.w, R2;\n"
+    "MUL R6.xyz, R5, R4;\n"
+    "RSQ R2.w, R3.x;\n"
+    "RCP R4.x, R2.w;\n"
+    "RSQ R2.w, R3.y;\n"
+    "RSQ R3.w, R3.z;\n"
+    "RCP R4.y, R2.w;\n"
+    "RCP R4.z, R3.w;\n"
+    "ADD R4.xyz, -R3, R4;\n"
+    "MUL R6.xyz, R3, R6;\n"
+    "MUL R4.xyz, R5, R4;\n"
+    "ADD R3.xyz, -R3, c[8].x;\n"
+    "MAD R2.xyz, R2, R3, R0.w;\n"
+    "MUL R3.xyz, R0, c[8].y;\n"
+    "MAD R5.xyz, R0.w, R1, R6;\n"
+    "MAD R4.xyz, R0.w, R1, R4;\n"
+    "ADD R6.xyz, R4, -R5;\n"
+    "MUL R4.xyz, R1, c[8].w;\n"
+    "SGE R4.xyz, R4, R1.w;\n"
+    "MAD R4.xyz, R4, R6, R5;\n"
+    "MAD R4.xyz, -R1, R2, R4;\n"
+    "SGE R3.xyz, R3, R0.w;\n"
+    "MUL R2.xyz, R1, R2;\n"
+    "ADD R2.w, -R1, c[8].x;\n"
+    "MAD R2.xyz, R3, R4, R2;\n"
+    "MAD R2.xyz, R0, R2.w, R2;\n"
+    "ADD R0.x, -R0.w, c[8];\n"
+    "MAD R2.xyz, R1, R0.x, R2;\n"
+    "ADD R0.z, R0.w, R1.w;\n"
+    "MAD R2.w, -R0, R1, R0.z;\n"
+    "ADD R0.xy, fragment.position, c[6];\n"
+    "MUL R0.xy, R0, c[4];\n"
+    "TEX R0, R0, texture[1], 2D;\n"
+    "ADD R2, R2, -R1;\n"
+    "DP4 R0.x, R0, c[7];\n"
+    "MAD result.color, R0.x, R2, R1;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_DIFFERENCE =
+    "!!ARBfp1.0\n"
+    "PARAM c[9] = { program.local[0..7],\n"
+    "		{ 2 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.z, R0.x, R0.y;\n"
+    "MUL R1.x, R0.z, c[0].z;\n"
+    "MUL R0.xy, fragment.position, c[5];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "TEX R1, R1, texture[2], 1D;\n"
+    "ADD R2.xyz, R1, R0;\n"
+    "MUL R3.xyz, R1.w, R0;\n"
+    "MUL R1.xyz, R1, R0.w;\n"
+    "MIN R1.xyz, R1, R3;\n"
+    "MAD R2.xyz, -R1, c[8].x, R2;\n"
+    "ADD R1.z, R1.w, R0.w;\n"
+    "MAD R2.w, -R1, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[6];\n"
+    "MUL R1.xy, R1, c[4];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[7];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_EXCLUSION =
+    "!!ARBfp1.0\n"
+    "PARAM c[9] = { program.local[0..7],\n"
+    "		{ 2, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.z, R0.x, R0.y;\n"
+    "MUL R1.x, R0.z, c[0].z;\n"
+    "MUL R0.xy, fragment.position, c[5];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "TEX R1, R1, texture[2], 1D;\n"
+    "MUL R2.xyz, R1.w, R0;\n"
+    "MAD R3.xyz, R1, R0.w, R2;\n"
+    "MUL R2.xyz, R1, R0;\n"
+    "MAD R2.xyz, -R2, c[8].x, R3;\n"
+    "ADD R2.w, -R0, c[8].y;\n"
+    "MAD R1.xyz, R1, R2.w, R2;\n"
+    "ADD R2.x, -R1.w, c[8].y;\n"
+    "MAD R2.xyz, R0, R2.x, R1;\n"
+    "ADD R1.z, R1.w, R0.w;\n"
+    "MAD R2.w, -R1, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[6];\n"
+    "MUL R1.xy, R1, c[4];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[7];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_SIMPLE_PORTER_DUFF_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[8] = { program.local[0..6],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[6].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "MUL R2.xyz, R1, c[4].y;\n"
+    "MUL R0.x, R0, c[0].z;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "MUL R3.xyz, R0.w, R2;\n"
+    "MUL R2.xyz, R0, c[4].x;\n"
+    "MAD R2.xyz, R1.w, R2, R3;\n"
+    "ADD R2.w, -R1, c[7].x;\n"
+    "MUL R0.xyz, R0, c[5].y;\n"
+    "MAD R0.xyz, R2.w, R0, R2;\n"
+    "ADD R2.x, -R0.w, c[7];\n"
+    "MUL R1.xyz, R1, c[5].z;\n"
+    "MAD result.color.xyz, R2.x, R1, R0;\n"
+    "MUL R0.x, R0.w, R1.w;\n"
+    "MUL R0.z, R1.w, R2.x;\n"
+    "MUL R0.y, R0.w, R2.w;\n"
+    "DP3 result.color.w, R0, c[5];\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_MULTIPLY_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[6] = { program.local[0..4],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[4].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "MUL R0.x, R0, c[0].z;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "ADD R2.x, -R1.w, c[5];\n"
+    "MUL R2.xyz, R0, R2.x;\n"
+    "MAD R0.xyz, R0, R1, R2;\n"
+    "ADD R2.x, R0.w, R1.w;\n"
+    "ADD R2.y, -R0.w, c[5].x;\n"
+    "MAD result.color.xyz, R1, R2.y, R0;\n"
+    "MAD result.color.w, -R0, R1, R2.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_SCREEN_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[5] = { program.local[0..4] };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[4].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "MUL R0.x, R0, c[0].z;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "ADD R2, R0, R1;\n"
+    "MAD result.color, -R0, R1, R2;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_OVERLAY_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[6] = { program.local[0..4],\n"
+    "		{ 2, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.x, R0, c[0].z;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "MUL R1.xy, fragment.position, c[4];\n"
+    "TEX R1, R1, texture[0], 2D;\n"
+    "ADD R3.xyz, R0.w, -R0;\n"
+    "ADD R2.xyz, R1.w, -R1;\n"
+    "MUL R2.xyz, R2, R3;\n"
+    "ADD R2.w, -R1, c[5].y;\n"
+    "MUL R2.xyz, R2, c[5].x;\n"
+    "MAD R2.xyz, R0.w, R1.w, -R2;\n"
+    "MAD R2.xyz, R0, R2.w, R2;\n"
+    "MUL R3.xyz, R0, R2.w;\n"
+    "MUL R0.xyz, R0, R1;\n"
+    "ADD R2.w, -R0, c[5].y;\n"
+    "MAD R0.xyz, R0, c[5].x, R3;\n"
+    "MAD R0.xyz, R1, R2.w, R0;\n"
+    "MAD R2.xyz, R1, R2.w, R2;\n"
+    "MUL R1.xyz, R1, c[5].x;\n"
+    "ADD R2.w, R0, R1;\n"
+    "ADD R2.xyz, R2, -R0;\n"
+    "SGE R1.xyz, R1, R1.w;\n"
+    "MAD result.color.xyz, R1, R2, R0;\n"
+    "MAD result.color.w, -R0, R1, R2;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_DARKEN_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[6] = { program.local[0..4],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[4].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "MUL R0.x, R0, c[0].z;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "MUL R2.xyz, R0, R1.w;\n"
+    "MUL R3.xyz, R0.w, R1;\n"
+    "MIN R2.xyz, R2, R3;\n"
+    "ADD R2.w, -R1, c[5].x;\n"
+    "MAD R0.xyz, R0, R2.w, R2;\n"
+    "ADD R2.x, R0.w, R1.w;\n"
+    "ADD R2.y, -R0.w, c[5].x;\n"
+    "MAD result.color.xyz, R1, R2.y, R0;\n"
+    "MAD result.color.w, -R0, R1, R2.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_LIGHTEN_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[6] = { program.local[0..4],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[4].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "MUL R0.x, R0, c[0].z;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "MUL R2.xyz, R0, R1.w;\n"
+    "MUL R3.xyz, R0.w, R1;\n"
+    "MAX R2.xyz, R2, R3;\n"
+    "ADD R2.w, -R1, c[5].x;\n"
+    "MAD R0.xyz, R0, R2.w, R2;\n"
+    "ADD R2.x, R0.w, R1.w;\n"
+    "ADD R2.y, -R0.w, c[5].x;\n"
+    "MAD result.color.xyz, R1, R2.y, R0;\n"
+    "MAD result.color.w, -R0, R1, R2.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_COLORDODGE_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[6] = { program.local[0..4],\n"
+    "		{ 1, 1e-006 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.x, R0, c[0].z;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "MAX R1.x, R0.w, c[5].y;\n"
+    "RCP R1.x, R1.x;\n"
+    "MAD R3.xyz, -R0, R1.x, c[5].x;\n"
+    "MAX R3.xyz, R3, c[5].y;\n"
+    "MUL R1.xy, fragment.position, c[4];\n"
+    "TEX R1, R1, texture[0], 2D;\n"
+    "ADD R2.x, -R0.w, c[5];\n"
+    "MUL R2.xyz, R1, R2.x;\n"
+    "ADD R2.w, -R1, c[5].x;\n"
+    "MAD R2.xyz, R0, R2.w, R2;\n"
+    "MUL R1.xyz, R0.w, R1;\n"
+    "MAD R0.xyz, R0, R1.w, R1;\n"
+    "MUL R2.w, R0, R1;\n"
+    "RCP R3.x, R3.x;\n"
+    "RCP R3.y, R3.y;\n"
+    "RCP R3.z, R3.z;\n"
+    "MAD R3.xyz, R1, R3, R2;\n"
+    "MAD R2.xyz, R0.w, R1.w, R2;\n"
+    "ADD R1.x, R0.w, R1.w;\n"
+    "ADD R2.xyz, R2, -R3;\n"
+    "SGE R0.xyz, R0, R2.w;\n"
+    "MAD result.color.xyz, R0, R2, R3;\n"
+    "MAD result.color.w, -R0, R1, R1.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_COLORBURN_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[6] = { program.local[0..4],\n"
+    "		{ 1, 9.9999997e-006 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "TEMP R5;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[4].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "MUL R0.x, R0, c[0].z;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "MUL R2.xyz, R0.w, R1;\n"
+    "MAD R3.xyz, R0, R1.w, R2;\n"
+    "ADD R2.w, -R1, c[5].x;\n"
+    "MAD R2.xyz, -R0.w, R1.w, R3;\n"
+    "MUL R4.xyz, R0.w, R2;\n"
+    "MAX R2.xyz, R0, c[5].y;\n"
+    "MUL R5.xyz, R0, R2.w;\n"
+    "ADD R3.w, -R0, c[5].x;\n"
+    "RCP R2.x, R2.x;\n"
+    "RCP R2.y, R2.y;\n"
+    "RCP R2.z, R2.z;\n"
+    "MAD R2.xyz, R4, R2, R5;\n"
+    "MUL R4.xyz, R1, R3.w;\n"
+    "MAD R1.xyz, R1, R3.w, R2;\n"
+    "MAD R0.xyz, R0, R2.w, R4;\n"
+    "MUL R2.x, R0.w, R1.w;\n"
+    "ADD R2.w, R0, R1;\n"
+    "ADD R1.xyz, R1, -R0;\n"
+    "SGE R2.xyz, R3, R2.x;\n"
+    "MAD result.color.xyz, R2, R1, R0;\n"
+    "MAD result.color.w, -R0, R1, R2;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_HARDLIGHT_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[6] = { program.local[0..4],\n"
+    "		{ 2, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.x, R0, c[0].z;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "MUL R1.xy, fragment.position, c[4];\n"
+    "TEX R1, R1, texture[0], 2D;\n"
+    "ADD R2.w, -R1, c[5].y;\n"
+    "ADD R3.xyz, R0.w, -R0;\n"
+    "ADD R2.xyz, R1.w, -R1;\n"
+    "MUL R2.xyz, R2, R3;\n"
+    "MUL R2.xyz, R2, c[5].x;\n"
+    "MAD R2.xyz, R0.w, R1.w, -R2;\n"
+    "MAD R2.xyz, R0, R2.w, R2;\n"
+    "MUL R4.xyz, R0, R2.w;\n"
+    "MUL R3.xyz, R0, R1;\n"
+    "MUL R0.xyz, R0, c[5].x;\n"
+    "ADD R2.w, -R0, c[5].y;\n"
+    "MAD R3.xyz, R3, c[5].x, R4;\n"
+    "MAD R3.xyz, R1, R2.w, R3;\n"
+    "MAD R1.xyz, R1, R2.w, R2;\n"
+    "ADD R2.x, R0.w, R1.w;\n"
+    "ADD R1.xyz, R1, -R3;\n"
+    "SGE R0.xyz, R0, R0.w;\n"
+    "MAD result.color.xyz, R0, R1, R3;\n"
+    "MAD result.color.w, -R0, R1, R2.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_SOFTLIGHT_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[7] = { program.local[0..4],\n"
+    "		{ 1, 2, 9.9999997e-006, 4 },\n"
+    "		{ 16, 12, 3 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "TEMP R5;\n"
+    "TEMP R6;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R1.xy, fragment.position, c[4];\n"
+    "TEX R1, R1, texture[0], 2D;\n"
+    "MAX R0.z, R1.w, c[5];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R3.xyz, R1, R0.z;\n"
+    "MAD R2.xyz, R3, c[6].x, -c[6].y;\n"
+    "MUL R0.x, R0, c[0].z;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "MAD R4.xyz, R3, R2, c[6].z;\n"
+    "MAD R2.xyz, R0, c[5].y, -R0.w;\n"
+    "MUL R5.xyz, R1.w, R2;\n"
+    "MUL R6.xyz, R5, R4;\n"
+    "RSQ R2.w, R3.x;\n"
+    "RCP R4.x, R2.w;\n"
+    "RSQ R2.w, R3.y;\n"
+    "RSQ R3.w, R3.z;\n"
+    "RCP R4.y, R2.w;\n"
+    "RCP R4.z, R3.w;\n"
+    "ADD R4.xyz, -R3, R4;\n"
+    "MUL R6.xyz, R3, R6;\n"
+    "MUL R4.xyz, R5, R4;\n"
+    "ADD R3.xyz, -R3, c[5].x;\n"
+    "MAD R2.xyz, R2, R3, R0.w;\n"
+    "MUL R3.xyz, R0, c[5].y;\n"
+    "MAD R5.xyz, R0.w, R1, R6;\n"
+    "MAD R4.xyz, R0.w, R1, R4;\n"
+    "ADD R6.xyz, R4, -R5;\n"
+    "MUL R4.xyz, R1, c[5].w;\n"
+    "SGE R4.xyz, R4, R1.w;\n"
+    "MAD R4.xyz, R4, R6, R5;\n"
+    "MAD R4.xyz, -R1, R2, R4;\n"
+    "MUL R2.xyz, R1, R2;\n"
+    "SGE R3.xyz, R3, R0.w;\n"
+    "MAD R2.xyz, R3, R4, R2;\n"
+    "ADD R2.w, -R1, c[5].x;\n"
+    "MAD R2.xyz, R0, R2.w, R2;\n"
+    "ADD R0.x, R0.w, R1.w;\n"
+    "ADD R0.y, -R0.w, c[5].x;\n"
+    "MAD result.color.xyz, R1, R0.y, R2;\n"
+    "MAD result.color.w, -R0, R1, R0.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_DIFFERENCE_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[6] = { program.local[0..4],\n"
+    "		{ 2 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[4].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "MUL R0.x, R0, c[0].z;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "MUL R2.xyz, R0, R1.w;\n"
+    "MUL R3.xyz, R0.w, R1;\n"
+    "ADD R0.xyz, R0, R1;\n"
+    "MIN R2.xyz, R2, R3;\n"
+    "ADD R1.x, R0.w, R1.w;\n"
+    "MAD result.color.xyz, -R2, c[5].x, R0;\n"
+    "MAD result.color.w, -R0, R1, R1.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_EXCLUSION_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[6] = { program.local[0..4],\n"
+    "		{ 2, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[4].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "MUL R0.x, R0, c[0].z;\n"
+    "TEX R0, R0, texture[1], 1D;\n"
+    "MUL R2.xyz, R0.w, R1;\n"
+    "MAD R3.xyz, R0, R1.w, R2;\n"
+    "MUL R2.xyz, R0, R1;\n"
+    "MAD R2.xyz, -R2, c[5].x, R3;\n"
+    "ADD R2.w, -R1, c[5].y;\n"
+    "MAD R0.xyz, R0, R2.w, R2;\n"
+    "ADD R2.x, R0.w, R1.w;\n"
+    "ADD R2.y, -R0.w, c[5];\n"
+    "MAD result.color.xyz, R1, R2.y, R0;\n"
+    "MAD result.color.w, -R0, R1, R2.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODE_BLEND_MODE_MASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[7] = { program.local[0..6] };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, R0.z;\n"
+    "MUL R0.zw, R0, c[0].xyxy;\n"
+    "ADD R1.x, R0.z, R0.w;\n"
+    "ADD R0.xy, fragment.position, c[5];\n"
+    "MUL R0.xy, R0, c[4];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "DP4 R1.y, R0, c[6];\n"
+    "MUL R1.x, R1, c[0].z;\n"
+    "TEX R0, R1, texture[1], 1D;\n"
+    "MUL result.color, R0, R1.y;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODE_BLEND_MODE_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[4] = { program.local[0..3] };\n"
+    "TEMP R0;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "ADD R0.x, R0, R0.y;\n"
+    "MUL R0.x, R0, c[0].z;\n"
+    "TEX result.color, R0, texture[0], 1D;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_SIMPLE_PORTER_DUFF =
+    "!!ARBfp1.0\n"
+    "PARAM c[11] = { program.local[0..9],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R1.xyz, R0, c[3];\n"
+    "RCP R0.z, R1.z;\n"
+    "MUL R1.xy, R1, R0.z;\n"
+    "MUL R0.xy, fragment.position, c[7];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "MUL R1.xy, R1, c[0];\n"
+    "TEX R1, R1, texture[2], 2D;\n"
+    "MUL R2.xyz, R0, c[4].y;\n"
+    "MUL R3.xyz, R1.w, R2;\n"
+    "MUL R2.xyz, R1, c[4].x;\n"
+    "MAD R2.xyz, R0.w, R2, R3;\n"
+    "ADD R3.xy, fragment.position, c[8];\n"
+    "ADD R2.w, -R0, c[10].x;\n"
+    "MUL R1.xyz, R1, c[5].y;\n"
+    "MAD R2.xyz, R2.w, R1, R2;\n"
+    "MUL R1.xyz, R0, c[5].z;\n"
+    "ADD R3.z, -R1.w, c[10].x;\n"
+    "MAD R2.xyz, R3.z, R1, R2;\n"
+    "MUL R1.y, R1.w, R2.w;\n"
+    "MUL R1.x, R1.w, R0.w;\n"
+    "MUL R1.z, R0.w, R3;\n"
+    "DP3 R2.w, R1, c[5];\n"
+    "MUL R3.xy, R3, c[6];\n"
+    "TEX R1, R3, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[9];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_MULTIPLY =
+    "!!ARBfp1.0\n"
+    "PARAM c[9] = { program.local[0..7],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R1.xyz, R0, c[3];\n"
+    "RCP R0.z, R1.z;\n"
+    "MUL R1.xy, R1, R0.z;\n"
+    "MUL R0.xy, fragment.position, c[5];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "MUL R1.xy, R1, c[0];\n"
+    "TEX R1, R1, texture[2], 2D;\n"
+    "ADD R2.x, -R0.w, c[8];\n"
+    "MUL R2.xyz, R1, R2.x;\n"
+    "MAD R1.xyz, R1, R0, R2;\n"
+    "ADD R2.x, -R1.w, c[8];\n"
+    "MAD R2.xyz, R0, R2.x, R1;\n"
+    "ADD R1.z, R1.w, R0.w;\n"
+    "MAD R2.w, -R1, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[6];\n"
+    "MUL R1.xy, R1, c[4];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[7];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_SCREEN =
+    "!!ARBfp1.0\n"
+    "PARAM c[8] = { program.local[0..7] };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, c[0].xyxy;\n"
+    "ADD R3.xy, fragment.position, c[6];\n"
+    "TEX R1, R0.zwzw, texture[2], 2D;\n"
+    "MUL R0.xy, fragment.position, c[5];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "ADD R2, R1, R0;\n"
+    "MAD R2, -R1, R0, R2;\n"
+    "MUL R3.xy, R3, c[4];\n"
+    "TEX R1, R3, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[7];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_OVERLAY =
+    "!!ARBfp1.0\n"
+    "PARAM c[9] = { program.local[0..7],\n"
+    "		{ 2, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R0, R0, texture[2], 2D;\n"
+    "MUL R1.xy, fragment.position, c[5];\n"
+    "TEX R1, R1, texture[0], 2D;\n"
+    "ADD R2.w, -R1, c[8].y;\n"
+    "ADD R3.xyz, R0.w, -R0;\n"
+    "ADD R2.xyz, R1.w, -R1;\n"
+    "MUL R2.xyz, R2, R3;\n"
+    "MUL R2.xyz, R2, c[8].x;\n"
+    "MAD R2.xyz, R0.w, R1.w, -R2;\n"
+    "MUL R4.xyz, R0, R2.w;\n"
+    "MUL R3.xyz, R0, R1;\n"
+    "MAD R0.xyz, R0, R2.w, R2;\n"
+    "ADD R2.x, -R0.w, c[8].y;\n"
+    "MAD R3.xyz, R3, c[8].x, R4;\n"
+    "MAD R3.xyz, R1, R2.x, R3;\n"
+    "MAD R0.xyz, R1, R2.x, R0;\n"
+    "MUL R2.xyz, R1, c[8].x;\n"
+    "ADD R0.xyz, R0, -R3;\n"
+    "SGE R2.xyz, R2, R1.w;\n"
+    "MAD R2.xyz, R2, R0, R3;\n"
+    "ADD R0.z, R0.w, R1.w;\n"
+    "MAD R2.w, -R0, R1, R0.z;\n"
+    "ADD R0.xy, fragment.position, c[6];\n"
+    "MUL R0.xy, R0, c[4];\n"
+    "TEX R0, R0, texture[1], 2D;\n"
+    "ADD R2, R2, -R1;\n"
+    "DP4 R0.x, R0, c[7];\n"
+    "MAD result.color, R0.x, R2, R1;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_DARKEN =
+    "!!ARBfp1.0\n"
+    "PARAM c[9] = { program.local[0..7],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, R0.z;\n"
+    "MUL R1.xy, R0.zwzw, c[0];\n"
+    "MUL R0.xy, fragment.position, c[5];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "TEX R1, R1, texture[2], 2D;\n"
+    "MUL R3.xyz, R1.w, R0;\n"
+    "MUL R2.xyz, R1, R0.w;\n"
+    "MIN R2.xyz, R2, R3;\n"
+    "ADD R2.w, -R0, c[8].x;\n"
+    "MAD R1.xyz, R1, R2.w, R2;\n"
+    "ADD R2.x, -R1.w, c[8];\n"
+    "MAD R2.xyz, R0, R2.x, R1;\n"
+    "ADD R1.z, R1.w, R0.w;\n"
+    "MAD R2.w, -R1, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[6];\n"
+    "MUL R1.xy, R1, c[4];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[7];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_LIGHTEN =
+    "!!ARBfp1.0\n"
+    "PARAM c[9] = { program.local[0..7],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, R0.z;\n"
+    "MUL R1.xy, R0.zwzw, c[0];\n"
+    "MUL R0.xy, fragment.position, c[5];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "TEX R1, R1, texture[2], 2D;\n"
+    "MUL R3.xyz, R1.w, R0;\n"
+    "MUL R2.xyz, R1, R0.w;\n"
+    "MAX R2.xyz, R2, R3;\n"
+    "ADD R2.w, -R0, c[8].x;\n"
+    "MAD R1.xyz, R1, R2.w, R2;\n"
+    "ADD R2.x, -R1.w, c[8];\n"
+    "MAD R2.xyz, R0, R2.x, R1;\n"
+    "ADD R1.z, R1.w, R0.w;\n"
+    "MAD R2.w, -R1, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[6];\n"
+    "MUL R1.xy, R1, c[4];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[7];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_COLORDODGE =
+    "!!ARBfp1.0\n"
+    "PARAM c[9] = { program.local[0..7],\n"
+    "		{ 1, 1e-006 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R0, R0, texture[2], 2D;\n"
+    "MAX R1.x, R0.w, c[8].y;\n"
+    "RCP R1.x, R1.x;\n"
+    "MAD R2.xyz, -R0, R1.x, c[8].x;\n"
+    "MAX R2.xyz, R2, c[8].y;\n"
+    "MUL R1.xy, fragment.position, c[5];\n"
+    "TEX R1, R1, texture[0], 2D;\n"
+    "ADD R2.w, -R0, c[8].x;\n"
+    "MUL R3.xyz, R1, R2.w;\n"
+    "ADD R2.w, -R1, c[8].x;\n"
+    "MAD R4.xyz, R0, R2.w, R3;\n"
+    "MUL R3.xyz, R0.w, R1;\n"
+    "MUL R2.w, R0, R1;\n"
+    "MAD R0.xyz, R0, R1.w, R3;\n"
+    "SGE R0.xyz, R0, R2.w;\n"
+    "RCP R2.x, R2.x;\n"
+    "RCP R2.y, R2.y;\n"
+    "RCP R2.z, R2.z;\n"
+    "MAD R2.xyz, R3, R2, R4;\n"
+    "MAD R4.xyz, R0.w, R1.w, R4;\n"
+    "ADD R4.xyz, R4, -R2;\n"
+    "MAD R2.xyz, R0, R4, R2;\n"
+    "ADD R0.z, R0.w, R1.w;\n"
+    "MAD R2.w, -R0, R1, R0.z;\n"
+    "ADD R0.xy, fragment.position, c[6];\n"
+    "MUL R0.xy, R0, c[4];\n"
+    "TEX R0, R0, texture[1], 2D;\n"
+    "ADD R2, R2, -R1;\n"
+    "DP4 R0.x, R0, c[7];\n"
+    "MAD result.color, R0.x, R2, R1;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_COLORBURN =
+    "!!ARBfp1.0\n"
+    "PARAM c[9] = { program.local[0..7],\n"
+    "		{ 1, 9.9999997e-006 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "TEMP R5;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[5].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R0, R0, texture[2], 2D;\n"
+    "MUL R2.xyz, R0.w, R1;\n"
+    "MAD R3.xyz, R0, R1.w, R2;\n"
+    "MAD R2.xyz, -R0.w, R1.w, R3;\n"
+    "MUL R4.xyz, R0.w, R2;\n"
+    "MAX R2.xyz, R0, c[8].y;\n"
+    "ADD R2.w, -R1, c[8].x;\n"
+    "MUL R5.xyz, R0, R2.w;\n"
+    "ADD R3.w, -R0, c[8].x;\n"
+    "RCP R2.x, R2.x;\n"
+    "RCP R2.y, R2.y;\n"
+    "RCP R2.z, R2.z;\n"
+    "MAD R2.xyz, R4, R2, R5;\n"
+    "MUL R4.xyz, R1, R3.w;\n"
+    "MAD R0.xyz, R0, R2.w, R4;\n"
+    "MUL R2.w, R0, R1;\n"
+    "MAD R2.xyz, R1, R3.w, R2;\n"
+    "ADD R2.xyz, R2, -R0;\n"
+    "SGE R3.xyz, R3, R2.w;\n"
+    "MAD R2.xyz, R3, R2, R0;\n"
+    "ADD R0.z, R0.w, R1.w;\n"
+    "MAD R2.w, -R0, R1, R0.z;\n"
+    "ADD R0.xy, fragment.position, c[6];\n"
+    "MUL R0.xy, R0, c[4];\n"
+    "TEX R0, R0, texture[1], 2D;\n"
+    "ADD R2, R2, -R1;\n"
+    "DP4 R0.x, R0, c[7];\n"
+    "MAD result.color, R0.x, R2, R1;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_HARDLIGHT =
+    "!!ARBfp1.0\n"
+    "PARAM c[9] = { program.local[0..7],\n"
+    "		{ 2, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R0, R0, texture[2], 2D;\n"
+    "MUL R1.xy, fragment.position, c[5];\n"
+    "TEX R1, R1, texture[0], 2D;\n"
+    "ADD R2.w, -R1, c[8].y;\n"
+    "ADD R3.xyz, R0.w, -R0;\n"
+    "ADD R2.xyz, R1.w, -R1;\n"
+    "MUL R2.xyz, R2, R3;\n"
+    "MUL R2.xyz, R2, c[8].x;\n"
+    "MAD R2.xyz, R0.w, R1.w, -R2;\n"
+    "MUL R4.xyz, R0, R2.w;\n"
+    "MAD R2.xyz, R0, R2.w, R2;\n"
+    "MUL R3.xyz, R0, R1;\n"
+    "ADD R2.w, -R0, c[8].y;\n"
+    "MAD R3.xyz, R3, c[8].x, R4;\n"
+    "MUL R0.xyz, R0, c[8].x;\n"
+    "SGE R0.xyz, R0, R0.w;\n"
+    "MAD R3.xyz, R1, R2.w, R3;\n"
+    "MAD R2.xyz, R1, R2.w, R2;\n"
+    "ADD R2.xyz, R2, -R3;\n"
+    "MAD R2.xyz, R0, R2, R3;\n"
+    "ADD R0.z, R0.w, R1.w;\n"
+    "MAD R2.w, -R0, R1, R0.z;\n"
+    "ADD R0.xy, fragment.position, c[6];\n"
+    "MUL R0.xy, R0, c[4];\n"
+    "TEX R0, R0, texture[1], 2D;\n"
+    "ADD R2, R2, -R1;\n"
+    "DP4 R0.x, R0, c[7];\n"
+    "MAD result.color, R0.x, R2, R1;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_SOFTLIGHT =
+    "!!ARBfp1.0\n"
+    "PARAM c[10] = { program.local[0..7],\n"
+    "		{ 1, 2, 9.9999997e-006, 4 },\n"
+    "		{ 16, 12, 3 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "TEMP R5;\n"
+    "TEMP R6;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MUL R1.xy, fragment.position, c[5];\n"
+    "TEX R1, R1, texture[0], 2D;\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MAX R0.w, R1, c[8].z;\n"
+    "RCP R0.w, R0.w;\n"
+    "MUL R3.xyz, R1, R0.w;\n"
+    "MAD R2.xyz, R3, c[9].x, -c[9].y;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R0, R0, texture[2], 2D;\n"
+    "MAD R4.xyz, R3, R2, c[9].z;\n"
+    "MAD R2.xyz, R0, c[8].y, -R0.w;\n"
+    "MUL R5.xyz, R1.w, R2;\n"
+    "MUL R6.xyz, R5, R4;\n"
+    "RSQ R2.w, R3.x;\n"
+    "RCP R4.x, R2.w;\n"
+    "RSQ R2.w, R3.y;\n"
+    "RSQ R3.w, R3.z;\n"
+    "RCP R4.y, R2.w;\n"
+    "RCP R4.z, R3.w;\n"
+    "ADD R4.xyz, -R3, R4;\n"
+    "MUL R6.xyz, R3, R6;\n"
+    "MUL R4.xyz, R5, R4;\n"
+    "ADD R3.xyz, -R3, c[8].x;\n"
+    "MAD R2.xyz, R2, R3, R0.w;\n"
+    "MUL R3.xyz, R0, c[8].y;\n"
+    "MAD R5.xyz, R0.w, R1, R6;\n"
+    "MAD R4.xyz, R0.w, R1, R4;\n"
+    "ADD R6.xyz, R4, -R5;\n"
+    "MUL R4.xyz, R1, c[8].w;\n"
+    "SGE R4.xyz, R4, R1.w;\n"
+    "MAD R4.xyz, R4, R6, R5;\n"
+    "MAD R4.xyz, -R1, R2, R4;\n"
+    "SGE R3.xyz, R3, R0.w;\n"
+    "MUL R2.xyz, R1, R2;\n"
+    "ADD R2.w, -R1, c[8].x;\n"
+    "MAD R2.xyz, R3, R4, R2;\n"
+    "MAD R2.xyz, R0, R2.w, R2;\n"
+    "ADD R0.x, -R0.w, c[8];\n"
+    "MAD R2.xyz, R1, R0.x, R2;\n"
+    "ADD R0.z, R0.w, R1.w;\n"
+    "MAD R2.w, -R0, R1, R0.z;\n"
+    "ADD R0.xy, fragment.position, c[6];\n"
+    "MUL R0.xy, R0, c[4];\n"
+    "TEX R0, R0, texture[1], 2D;\n"
+    "ADD R2, R2, -R1;\n"
+    "DP4 R0.x, R0, c[7];\n"
+    "MAD result.color, R0.x, R2, R1;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_DIFFERENCE =
+    "!!ARBfp1.0\n"
+    "PARAM c[9] = { program.local[0..7],\n"
+    "		{ 2 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, R0.z;\n"
+    "MUL R1.xy, R0.zwzw, c[0];\n"
+    "MUL R0.xy, fragment.position, c[5];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "TEX R1, R1, texture[2], 2D;\n"
+    "ADD R2.xyz, R1, R0;\n"
+    "MUL R3.xyz, R1.w, R0;\n"
+    "MUL R1.xyz, R1, R0.w;\n"
+    "MIN R1.xyz, R1, R3;\n"
+    "MAD R2.xyz, -R1, c[8].x, R2;\n"
+    "ADD R1.z, R1.w, R0.w;\n"
+    "MAD R2.w, -R1, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[6];\n"
+    "MUL R1.xy, R1, c[4];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[7];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_EXCLUSION =
+    "!!ARBfp1.0\n"
+    "PARAM c[9] = { program.local[0..7],\n"
+    "		{ 2, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, R0.z;\n"
+    "MUL R1.xy, R0.zwzw, c[0];\n"
+    "MUL R0.xy, fragment.position, c[5];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "TEX R1, R1, texture[2], 2D;\n"
+    "MUL R2.xyz, R1.w, R0;\n"
+    "MAD R3.xyz, R1, R0.w, R2;\n"
+    "MUL R2.xyz, R1, R0;\n"
+    "MAD R2.xyz, -R2, c[8].x, R3;\n"
+    "ADD R2.w, -R0, c[8].y;\n"
+    "MAD R1.xyz, R1, R2.w, R2;\n"
+    "ADD R2.x, -R1.w, c[8].y;\n"
+    "MAD R2.xyz, R0, R2.x, R1;\n"
+    "ADD R1.z, R1.w, R0.w;\n"
+    "MAD R2.w, -R1, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[6];\n"
+    "MUL R1.xy, R1, c[4];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[7];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_SIMPLE_PORTER_DUFF_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[8] = { program.local[0..6],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R1.xy, fragment.position, c[6];\n"
+    "TEX R1, R1, texture[0], 2D;\n"
+    "MUL R2.xyz, R1, c[4].y;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R0, R0, texture[1], 2D;\n"
+    "MUL R3.xyz, R0.w, R2;\n"
+    "MUL R2.xyz, R0, c[4].x;\n"
+    "MAD R2.xyz, R1.w, R2, R3;\n"
+    "ADD R2.w, -R1, c[7].x;\n"
+    "MUL R0.xyz, R0, c[5].y;\n"
+    "MAD R0.xyz, R2.w, R0, R2;\n"
+    "ADD R2.x, -R0.w, c[7];\n"
+    "MUL R1.xyz, R1, c[5].z;\n"
+    "MAD result.color.xyz, R2.x, R1, R0;\n"
+    "MUL R0.x, R0.w, R1.w;\n"
+    "MUL R0.z, R1.w, R2.x;\n"
+    "MUL R0.y, R0.w, R2.w;\n"
+    "DP3 result.color.w, R0, c[5];\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_MULTIPLY_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[6] = { program.local[0..4],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R1.xy, fragment.position, c[4];\n"
+    "TEX R1, R1, texture[0], 2D;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R0, R0, texture[1], 2D;\n"
+    "ADD R2.x, -R1.w, c[5];\n"
+    "MUL R2.xyz, R0, R2.x;\n"
+    "MAD R0.xyz, R0, R1, R2;\n"
+    "ADD R2.x, R0.w, R1.w;\n"
+    "ADD R2.y, -R0.w, c[5].x;\n"
+    "MAD result.color.xyz, R1, R2.y, R0;\n"
+    "MAD result.color.w, -R0, R1, R2.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_SCREEN_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[5] = { program.local[0..4] };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[4].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R0, R0, texture[1], 2D;\n"
+    "ADD R2, R0, R1;\n"
+    "MAD result.color, -R0, R1, R2;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_OVERLAY_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[6] = { program.local[0..4],\n"
+    "		{ 2, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R0, R0, texture[1], 2D;\n"
+    "MUL R1.xy, fragment.position, c[4];\n"
+    "TEX R1, R1, texture[0], 2D;\n"
+    "ADD R3.xyz, R0.w, -R0;\n"
+    "ADD R2.xyz, R1.w, -R1;\n"
+    "MUL R2.xyz, R2, R3;\n"
+    "ADD R2.w, -R1, c[5].y;\n"
+    "MUL R2.xyz, R2, c[5].x;\n"
+    "MAD R2.xyz, R0.w, R1.w, -R2;\n"
+    "MAD R2.xyz, R0, R2.w, R2;\n"
+    "MUL R3.xyz, R0, R2.w;\n"
+    "MUL R0.xyz, R0, R1;\n"
+    "ADD R2.w, -R0, c[5].y;\n"
+    "MAD R0.xyz, R0, c[5].x, R3;\n"
+    "MAD R0.xyz, R1, R2.w, R0;\n"
+    "MAD R2.xyz, R1, R2.w, R2;\n"
+    "MUL R1.xyz, R1, c[5].x;\n"
+    "ADD R2.w, R0, R1;\n"
+    "ADD R2.xyz, R2, -R0;\n"
+    "SGE R1.xyz, R1, R1.w;\n"
+    "MAD result.color.xyz, R1, R2, R0;\n"
+    "MAD result.color.w, -R0, R1, R2;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_DARKEN_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[6] = { program.local[0..4],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[4].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R0, R0, texture[1], 2D;\n"
+    "MUL R2.xyz, R0, R1.w;\n"
+    "MUL R3.xyz, R0.w, R1;\n"
+    "MIN R2.xyz, R2, R3;\n"
+    "ADD R2.w, -R1, c[5].x;\n"
+    "MAD R0.xyz, R0, R2.w, R2;\n"
+    "ADD R2.x, R0.w, R1.w;\n"
+    "ADD R2.y, -R0.w, c[5].x;\n"
+    "MAD result.color.xyz, R1, R2.y, R0;\n"
+    "MAD result.color.w, -R0, R1, R2.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_LIGHTEN_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[6] = { program.local[0..4],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[4].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R0, R0, texture[1], 2D;\n"
+    "MUL R2.xyz, R0, R1.w;\n"
+    "MUL R3.xyz, R0.w, R1;\n"
+    "MAX R2.xyz, R2, R3;\n"
+    "ADD R2.w, -R1, c[5].x;\n"
+    "MAD R0.xyz, R0, R2.w, R2;\n"
+    "ADD R2.x, R0.w, R1.w;\n"
+    "ADD R2.y, -R0.w, c[5].x;\n"
+    "MAD result.color.xyz, R1, R2.y, R0;\n"
+    "MAD result.color.w, -R0, R1, R2.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_COLORDODGE_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[6] = { program.local[0..4],\n"
+    "		{ 1, 1e-006 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R0, R0, texture[1], 2D;\n"
+    "MAX R1.x, R0.w, c[5].y;\n"
+    "RCP R1.x, R1.x;\n"
+    "MAD R3.xyz, -R0, R1.x, c[5].x;\n"
+    "MAX R3.xyz, R3, c[5].y;\n"
+    "MUL R1.xy, fragment.position, c[4];\n"
+    "TEX R1, R1, texture[0], 2D;\n"
+    "ADD R2.x, -R0.w, c[5];\n"
+    "MUL R2.xyz, R1, R2.x;\n"
+    "ADD R2.w, -R1, c[5].x;\n"
+    "MAD R2.xyz, R0, R2.w, R2;\n"
+    "MUL R1.xyz, R0.w, R1;\n"
+    "MAD R0.xyz, R0, R1.w, R1;\n"
+    "MUL R2.w, R0, R1;\n"
+    "RCP R3.x, R3.x;\n"
+    "RCP R3.y, R3.y;\n"
+    "RCP R3.z, R3.z;\n"
+    "MAD R3.xyz, R1, R3, R2;\n"
+    "MAD R2.xyz, R0.w, R1.w, R2;\n"
+    "ADD R1.x, R0.w, R1.w;\n"
+    "ADD R2.xyz, R2, -R3;\n"
+    "SGE R0.xyz, R0, R2.w;\n"
+    "MAD result.color.xyz, R0, R2, R3;\n"
+    "MAD result.color.w, -R0, R1, R1.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_COLORBURN_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[6] = { program.local[0..4],\n"
+    "		{ 1, 9.9999997e-006 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "TEMP R5;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[4].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R0, R0, texture[1], 2D;\n"
+    "MUL R2.xyz, R0.w, R1;\n"
+    "MAD R3.xyz, R0, R1.w, R2;\n"
+    "ADD R2.w, -R1, c[5].x;\n"
+    "MAD R2.xyz, -R0.w, R1.w, R3;\n"
+    "MUL R4.xyz, R0.w, R2;\n"
+    "MAX R2.xyz, R0, c[5].y;\n"
+    "MUL R5.xyz, R0, R2.w;\n"
+    "ADD R3.w, -R0, c[5].x;\n"
+    "RCP R2.x, R2.x;\n"
+    "RCP R2.y, R2.y;\n"
+    "RCP R2.z, R2.z;\n"
+    "MAD R2.xyz, R4, R2, R5;\n"
+    "MUL R4.xyz, R1, R3.w;\n"
+    "MAD R1.xyz, R1, R3.w, R2;\n"
+    "MAD R0.xyz, R0, R2.w, R4;\n"
+    "MUL R2.x, R0.w, R1.w;\n"
+    "ADD R2.w, R0, R1;\n"
+    "ADD R1.xyz, R1, -R0;\n"
+    "SGE R2.xyz, R3, R2.x;\n"
+    "MAD result.color.xyz, R2, R1, R0;\n"
+    "MAD result.color.w, -R0, R1, R2;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_HARDLIGHT_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[6] = { program.local[0..4],\n"
+    "		{ 2, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R0, R0, texture[1], 2D;\n"
+    "MUL R1.xy, fragment.position, c[4];\n"
+    "TEX R1, R1, texture[0], 2D;\n"
+    "ADD R2.w, -R1, c[5].y;\n"
+    "ADD R3.xyz, R0.w, -R0;\n"
+    "ADD R2.xyz, R1.w, -R1;\n"
+    "MUL R2.xyz, R2, R3;\n"
+    "MUL R2.xyz, R2, c[5].x;\n"
+    "MAD R2.xyz, R0.w, R1.w, -R2;\n"
+    "MAD R2.xyz, R0, R2.w, R2;\n"
+    "MUL R4.xyz, R0, R2.w;\n"
+    "MUL R3.xyz, R0, R1;\n"
+    "MUL R0.xyz, R0, c[5].x;\n"
+    "ADD R2.w, -R0, c[5].y;\n"
+    "MAD R3.xyz, R3, c[5].x, R4;\n"
+    "MAD R3.xyz, R1, R2.w, R3;\n"
+    "MAD R1.xyz, R1, R2.w, R2;\n"
+    "ADD R2.x, R0.w, R1.w;\n"
+    "ADD R1.xyz, R1, -R3;\n"
+    "SGE R0.xyz, R0, R0.w;\n"
+    "MAD result.color.xyz, R0, R1, R3;\n"
+    "MAD result.color.w, -R0, R1, R2.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_SOFTLIGHT_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[7] = { program.local[0..4],\n"
+    "		{ 1, 2, 9.9999997e-006, 4 },\n"
+    "		{ 16, 12, 3 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "TEMP R5;\n"
+    "TEMP R6;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MUL R1.xy, fragment.position, c[4];\n"
+    "TEX R1, R1, texture[0], 2D;\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MAX R0.w, R1, c[5].z;\n"
+    "RCP R0.w, R0.w;\n"
+    "MUL R3.xyz, R1, R0.w;\n"
+    "MAD R2.xyz, R3, c[6].x, -c[6].y;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R0, R0, texture[1], 2D;\n"
+    "MAD R4.xyz, R3, R2, c[6].z;\n"
+    "MAD R2.xyz, R0, c[5].y, -R0.w;\n"
+    "MUL R5.xyz, R1.w, R2;\n"
+    "MUL R6.xyz, R5, R4;\n"
+    "RSQ R2.w, R3.x;\n"
+    "RCP R4.x, R2.w;\n"
+    "RSQ R2.w, R3.y;\n"
+    "RSQ R3.w, R3.z;\n"
+    "RCP R4.y, R2.w;\n"
+    "RCP R4.z, R3.w;\n"
+    "ADD R4.xyz, -R3, R4;\n"
+    "MUL R6.xyz, R3, R6;\n"
+    "MUL R4.xyz, R5, R4;\n"
+    "ADD R3.xyz, -R3, c[5].x;\n"
+    "MAD R2.xyz, R2, R3, R0.w;\n"
+    "MUL R3.xyz, R0, c[5].y;\n"
+    "MAD R5.xyz, R0.w, R1, R6;\n"
+    "MAD R4.xyz, R0.w, R1, R4;\n"
+    "ADD R6.xyz, R4, -R5;\n"
+    "MUL R4.xyz, R1, c[5].w;\n"
+    "SGE R4.xyz, R4, R1.w;\n"
+    "MAD R4.xyz, R4, R6, R5;\n"
+    "MAD R4.xyz, -R1, R2, R4;\n"
+    "MUL R2.xyz, R1, R2;\n"
+    "SGE R3.xyz, R3, R0.w;\n"
+    "MAD R2.xyz, R3, R4, R2;\n"
+    "ADD R2.w, -R1, c[5].x;\n"
+    "MAD R2.xyz, R0, R2.w, R2;\n"
+    "ADD R0.x, R0.w, R1.w;\n"
+    "ADD R0.y, -R0.w, c[5].x;\n"
+    "MAD result.color.xyz, R1, R0.y, R2;\n"
+    "MAD result.color.w, -R0, R1, R0.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_DIFFERENCE_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[6] = { program.local[0..4],\n"
+    "		{ 2 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[4].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R0, R0, texture[1], 2D;\n"
+    "MUL R2.xyz, R0, R1.w;\n"
+    "MUL R3.xyz, R0.w, R1;\n"
+    "ADD R0.xyz, R0, R1;\n"
+    "MIN R2.xyz, R2, R3;\n"
+    "ADD R1.x, R0.w, R1.w;\n"
+    "MAD result.color.xyz, -R2, c[5].x, R0;\n"
+    "MAD result.color.w, -R0, R1, R1.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_EXCLUSION_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[6] = { program.local[0..4],\n"
+    "		{ 2, 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[4].xyxy;\n"
+    "TEX R1, R0.zwzw, texture[0], 2D;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R0, R0, texture[1], 2D;\n"
+    "MUL R2.xyz, R0.w, R1;\n"
+    "MAD R3.xyz, R0, R1.w, R2;\n"
+    "MUL R2.xyz, R0, R1;\n"
+    "MAD R2.xyz, -R2, c[5].x, R3;\n"
+    "ADD R2.w, -R1, c[5].y;\n"
+    "MAD R0.xyz, R0, R2.w, R2;\n"
+    "ADD R2.x, R0.w, R1.w;\n"
+    "ADD R2.y, -R0.w, c[5];\n"
+    "MAD result.color.xyz, R1, R2.y, R0;\n"
+    "MAD result.color.w, -R0, R1, R2.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODE_BLEND_MODE_MASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[7] = { program.local[0..6] };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R1.xyz, R0, c[3];\n"
+    "RCP R0.z, R1.z;\n"
+    "MUL R1.xy, R1, R0.z;\n"
+    "ADD R0.xy, fragment.position, c[5];\n"
+    "MUL R0.xy, R0, c[4];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "DP4 R1.z, R0, c[6];\n"
+    "MUL R1.xy, R1, c[0];\n"
+    "TEX R0, R1, texture[1], 2D;\n"
+    "MUL result.color, R0, R1.z;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODE_BLEND_MODE_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[4] = { program.local[0..3] };\n"
+    "TEMP R0;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX result.color, R0, texture[0], 2D;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_SIMPLE_PORTER_DUFF =
+    "!!ARBfp1.0\n"
+    "PARAM c[11] = { program.local[0..9],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, c[0].xyxy;\n"
+    "TEX R1.x, R0.zwzw, texture[2], 2D;\n"
+    "MUL R0.xy, fragment.position, c[7];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "ADD R1.x, -R1, c[10];\n"
+    "MUL R1, fragment.color.primary, R1.x;\n"
+    "MUL R2.xyz, R0, c[4].y;\n"
+    "MUL R3.xyz, R1.w, R2;\n"
+    "MUL R2.xyz, R1, c[4].x;\n"
+    "MAD R2.xyz, R0.w, R2, R3;\n"
+    "ADD R3.xy, fragment.position, c[8];\n"
+    "ADD R2.w, -R0, c[10].x;\n"
+    "MUL R1.xyz, R1, c[5].y;\n"
+    "MAD R2.xyz, R2.w, R1, R2;\n"
+    "MUL R1.xyz, R0, c[5].z;\n"
+    "ADD R3.z, -R1.w, c[10].x;\n"
+    "MAD R2.xyz, R3.z, R1, R2;\n"
+    "MUL R1.y, R1.w, R2.w;\n"
+    "MUL R1.x, R1.w, R0.w;\n"
+    "MUL R1.z, R0.w, R3;\n"
+    "DP3 R2.w, R1, c[5];\n"
+    "MUL R3.xy, R3, c[6];\n"
+    "TEX R1, R3, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[9];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_MULTIPLY =
+    "!!ARBfp1.0\n"
+    "PARAM c[9] = { program.local[0..7],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, c[0].xyxy;\n"
+    "TEX R1.x, R0.zwzw, texture[2], 2D;\n"
+    "MUL R0.xy, fragment.position, c[5];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "ADD R1.x, -R1, c[8];\n"
+    "MUL R1, fragment.color.primary, R1.x;\n"
+    "ADD R2.x, -R0.w, c[8];\n"
+    "MUL R2.xyz, R1, R2.x;\n"
+    "MAD R1.xyz, R1, R0, R2;\n"
+    "ADD R2.x, -R1.w, c[8];\n"
+    "MAD R2.xyz, R0, R2.x, R1;\n"
+    "ADD R1.z, R1.w, R0.w;\n"
+    "MAD R2.w, -R1, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[6];\n"
+    "MUL R1.xy, R1, c[4];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[7];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_SCREEN =
+    "!!ARBfp1.0\n"
+    "PARAM c[9] = { program.local[0..7],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R0.x, R0, texture[2], 2D;\n"
+    "ADD R0.z, -R0.x, c[8].x;\n"
+    "ADD R3.xy, fragment.position, c[6];\n"
+    "MUL R1, fragment.color.primary, R0.z;\n"
+    "MUL R0.xy, fragment.position, c[5];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "ADD R2, R1, R0;\n"
+    "MAD R2, -R1, R0, R2;\n"
+    "MUL R3.xy, R3, c[4];\n"
+    "TEX R1, R3, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[7];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_OVERLAY =
+    "!!ARBfp1.0\n"
+    "PARAM c[9] = { program.local[0..7],\n"
+    "		{ 1, 2 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R0.x, R0, texture[2], 2D;\n"
+    "ADD R0.x, -R0, c[8];\n"
+    "MUL R1, fragment.color.primary, R0.x;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[5].xyxy;\n"
+    "TEX R0, R0.zwzw, texture[0], 2D;\n"
+    "ADD R2.w, -R0, c[8].x;\n"
+    "ADD R3.xyz, R1.w, -R1;\n"
+    "ADD R2.xyz, R0.w, -R0;\n"
+    "MUL R2.xyz, R2, R3;\n"
+    "MUL R2.xyz, R2, c[8].y;\n"
+    "MAD R2.xyz, R1.w, R0.w, -R2;\n"
+    "MUL R4.xyz, R1, R2.w;\n"
+    "MUL R3.xyz, R1, R0;\n"
+    "MAD R1.xyz, R1, R2.w, R2;\n"
+    "ADD R2.x, -R1.w, c[8];\n"
+    "MAD R3.xyz, R3, c[8].y, R4;\n"
+    "MAD R3.xyz, R0, R2.x, R3;\n"
+    "MAD R1.xyz, R0, R2.x, R1;\n"
+    "MUL R2.xyz, R0, c[8].y;\n"
+    "ADD R1.xyz, R1, -R3;\n"
+    "SGE R2.xyz, R2, R0.w;\n"
+    "MAD R2.xyz, R2, R1, R3;\n"
+    "ADD R1.z, R1.w, R0.w;\n"
+    "MAD R2.w, -R1, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[6];\n"
+    "MUL R1.xy, R1, c[4];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[7];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_DARKEN =
+    "!!ARBfp1.0\n"
+    "PARAM c[9] = { program.local[0..7],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R1.x, R0, texture[2], 2D;\n"
+    "MUL R0.xy, fragment.position, c[5];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "ADD R1.x, -R1, c[8];\n"
+    "MUL R1, fragment.color.primary, R1.x;\n"
+    "MUL R3.xyz, R1.w, R0;\n"
+    "MUL R2.xyz, R1, R0.w;\n"
+    "MIN R2.xyz, R2, R3;\n"
+    "ADD R2.w, -R0, c[8].x;\n"
+    "MAD R1.xyz, R1, R2.w, R2;\n"
+    "ADD R2.x, -R1.w, c[8];\n"
+    "MAD R2.xyz, R0, R2.x, R1;\n"
+    "ADD R1.z, R1.w, R0.w;\n"
+    "MAD R2.w, -R1, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[6];\n"
+    "MUL R1.xy, R1, c[4];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[7];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_LIGHTEN =
+    "!!ARBfp1.0\n"
+    "PARAM c[9] = { program.local[0..7],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R1.x, R0, texture[2], 2D;\n"
+    "MUL R0.xy, fragment.position, c[5];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "ADD R1.x, -R1, c[8];\n"
+    "MUL R1, fragment.color.primary, R1.x;\n"
+    "MUL R3.xyz, R1.w, R0;\n"
+    "MUL R2.xyz, R1, R0.w;\n"
+    "MAX R2.xyz, R2, R3;\n"
+    "ADD R2.w, -R0, c[8].x;\n"
+    "MAD R1.xyz, R1, R2.w, R2;\n"
+    "ADD R2.x, -R1.w, c[8];\n"
+    "MAD R2.xyz, R0, R2.x, R1;\n"
+    "ADD R1.z, R1.w, R0.w;\n"
+    "MAD R2.w, -R1, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[6];\n"
+    "MUL R1.xy, R1, c[4];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[7];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_COLORDODGE =
+    "!!ARBfp1.0\n"
+    "PARAM c[9] = { program.local[0..7],\n"
+    "		{ 1, 1e-006 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R0.x, R0, texture[2], 2D;\n"
+    "ADD R0.x, -R0, c[8];\n"
+    "MUL R1, fragment.color.primary, R0.x;\n"
+    "MAX R0.x, R1.w, c[8].y;\n"
+    "RCP R0.x, R0.x;\n"
+    "MAD R2.xyz, -R1, R0.x, c[8].x;\n"
+    "MAX R2.xyz, R2, c[8].y;\n"
+    "MUL R0.xy, fragment.position, c[5];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "ADD R2.w, -R1, c[8].x;\n"
+    "MUL R3.xyz, R0, R2.w;\n"
+    "ADD R2.w, -R0, c[8].x;\n"
+    "MAD R4.xyz, R1, R2.w, R3;\n"
+    "MUL R3.xyz, R1.w, R0;\n"
+    "MUL R2.w, R1, R0;\n"
+    "MAD R1.xyz, R1, R0.w, R3;\n"
+    "SGE R1.xyz, R1, R2.w;\n"
+    "RCP R2.x, R2.x;\n"
+    "RCP R2.y, R2.y;\n"
+    "RCP R2.z, R2.z;\n"
+    "MAD R2.xyz, R3, R2, R4;\n"
+    "MAD R4.xyz, R1.w, R0.w, R4;\n"
+    "ADD R4.xyz, R4, -R2;\n"
+    "MAD R2.xyz, R1, R4, R2;\n"
+    "ADD R1.z, R1.w, R0.w;\n"
+    "MAD R2.w, -R1, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[6];\n"
+    "MUL R1.xy, R1, c[4];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[7];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_COLORBURN =
+    "!!ARBfp1.0\n"
+    "PARAM c[9] = { program.local[0..7],\n"
+    "		{ 1, 9.9999997e-006 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "TEMP R5;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R0.x, R0, texture[2], 2D;\n"
+    "ADD R1.x, -R0, c[8];\n"
+    "MUL R1, fragment.color.primary, R1.x;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[5].xyxy;\n"
+    "TEX R0, R0.zwzw, texture[0], 2D;\n"
+    "MUL R2.xyz, R1.w, R0;\n"
+    "MAD R3.xyz, R1, R0.w, R2;\n"
+    "MAD R2.xyz, -R1.w, R0.w, R3;\n"
+    "MUL R4.xyz, R1.w, R2;\n"
+    "MAX R2.xyz, R1, c[8].y;\n"
+    "ADD R2.w, -R0, c[8].x;\n"
+    "MUL R5.xyz, R1, R2.w;\n"
+    "ADD R3.w, -R1, c[8].x;\n"
+    "RCP R2.x, R2.x;\n"
+    "RCP R2.y, R2.y;\n"
+    "RCP R2.z, R2.z;\n"
+    "MAD R2.xyz, R4, R2, R5;\n"
+    "MUL R4.xyz, R0, R3.w;\n"
+    "MAD R1.xyz, R1, R2.w, R4;\n"
+    "MUL R2.w, R1, R0;\n"
+    "MAD R2.xyz, R0, R3.w, R2;\n"
+    "ADD R2.xyz, R2, -R1;\n"
+    "SGE R3.xyz, R3, R2.w;\n"
+    "MAD R2.xyz, R3, R2, R1;\n"
+    "ADD R1.z, R1.w, R0.w;\n"
+    "MAD R2.w, -R1, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[6];\n"
+    "MUL R1.xy, R1, c[4];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[7];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_HARDLIGHT =
+    "!!ARBfp1.0\n"
+    "PARAM c[9] = { program.local[0..7],\n"
+    "		{ 1, 2 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R0.x, R0, texture[2], 2D;\n"
+    "ADD R0.x, -R0, c[8];\n"
+    "MUL R1, fragment.color.primary, R0.x;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[5].xyxy;\n"
+    "TEX R0, R0.zwzw, texture[0], 2D;\n"
+    "ADD R2.w, -R0, c[8].x;\n"
+    "ADD R3.xyz, R1.w, -R1;\n"
+    "ADD R2.xyz, R0.w, -R0;\n"
+    "MUL R2.xyz, R2, R3;\n"
+    "MUL R2.xyz, R2, c[8].y;\n"
+    "MAD R2.xyz, R1.w, R0.w, -R2;\n"
+    "MUL R4.xyz, R1, R2.w;\n"
+    "MAD R2.xyz, R1, R2.w, R2;\n"
+    "MUL R3.xyz, R1, R0;\n"
+    "ADD R2.w, -R1, c[8].x;\n"
+    "MAD R3.xyz, R3, c[8].y, R4;\n"
+    "MUL R1.xyz, R1, c[8].y;\n"
+    "SGE R1.xyz, R1, R1.w;\n"
+    "MAD R3.xyz, R0, R2.w, R3;\n"
+    "MAD R2.xyz, R0, R2.w, R2;\n"
+    "ADD R2.xyz, R2, -R3;\n"
+    "MAD R2.xyz, R1, R2, R3;\n"
+    "ADD R1.z, R1.w, R0.w;\n"
+    "MAD R2.w, -R1, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[6];\n"
+    "MUL R1.xy, R1, c[4];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[7];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_SOFTLIGHT =
+    "!!ARBfp1.0\n"
+    "PARAM c[10] = { program.local[0..7],\n"
+    "		{ 1, 2, 9.9999997e-006, 4 },\n"
+    "		{ 16, 12, 3 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "TEMP R5;\n"
+    "TEMP R6;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R1.xyz, R0, c[3];\n"
+    "RCP R1.z, R1.z;\n"
+    "MUL R1.xy, R1, R1.z;\n"
+    "MUL R1.xy, R1, c[0];\n"
+    "TEX R1.x, R1, texture[2], 2D;\n"
+    "MUL R0.xy, fragment.position, c[5];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "MAX R1.z, R0.w, c[8];\n"
+    "RCP R1.z, R1.z;\n"
+    "MUL R3.xyz, R0, R1.z;\n"
+    "MAD R2.xyz, R3, c[9].x, -c[9].y;\n"
+    "ADD R1.x, -R1, c[8];\n"
+    "MUL R1, fragment.color.primary, R1.x;\n"
+    "MAD R4.xyz, R3, R2, c[9].z;\n"
+    "MAD R2.xyz, R1, c[8].y, -R1.w;\n"
+    "MUL R5.xyz, R0.w, R2;\n"
+    "MUL R6.xyz, R5, R4;\n"
+    "RSQ R2.w, R3.x;\n"
+    "RCP R4.x, R2.w;\n"
+    "RSQ R2.w, R3.y;\n"
+    "RSQ R3.w, R3.z;\n"
+    "RCP R4.y, R2.w;\n"
+    "RCP R4.z, R3.w;\n"
+    "ADD R4.xyz, -R3, R4;\n"
+    "MUL R6.xyz, R3, R6;\n"
+    "MUL R4.xyz, R5, R4;\n"
+    "ADD R3.xyz, -R3, c[8].x;\n"
+    "MAD R2.xyz, R2, R3, R1.w;\n"
+    "MUL R3.xyz, R1, c[8].y;\n"
+    "MAD R5.xyz, R1.w, R0, R6;\n"
+    "MAD R4.xyz, R1.w, R0, R4;\n"
+    "ADD R6.xyz, R4, -R5;\n"
+    "MUL R4.xyz, R0, c[8].w;\n"
+    "SGE R4.xyz, R4, R0.w;\n"
+    "MAD R4.xyz, R4, R6, R5;\n"
+    "MAD R4.xyz, -R0, R2, R4;\n"
+    "SGE R3.xyz, R3, R1.w;\n"
+    "MUL R2.xyz, R0, R2;\n"
+    "ADD R2.w, -R0, c[8].x;\n"
+    "MAD R2.xyz, R3, R4, R2;\n"
+    "MAD R2.xyz, R1, R2.w, R2;\n"
+    "ADD R1.x, -R1.w, c[8];\n"
+    "MAD R2.xyz, R0, R1.x, R2;\n"
+    "ADD R1.z, R1.w, R0.w;\n"
+    "MAD R2.w, -R1, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[6];\n"
+    "MUL R1.xy, R1, c[4];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[7];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_DIFFERENCE =
+    "!!ARBfp1.0\n"
+    "PARAM c[9] = { program.local[0..7],\n"
+    "		{ 1, 2 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R1.x, R0, texture[2], 2D;\n"
+    "MUL R0.xy, fragment.position, c[5];\n"
+    "ADD R1.x, -R1, c[8];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "MUL R1, fragment.color.primary, R1.x;\n"
+    "ADD R2.xyz, R1, R0;\n"
+    "MUL R3.xyz, R1.w, R0;\n"
+    "MUL R1.xyz, R1, R0.w;\n"
+    "MIN R1.xyz, R1, R3;\n"
+    "MAD R2.xyz, -R1, c[8].y, R2;\n"
+    "ADD R1.z, R1.w, R0.w;\n"
+    "MAD R2.w, -R1, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[6];\n"
+    "MUL R1.xy, R1, c[4];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[7];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_EXCLUSION =
+    "!!ARBfp1.0\n"
+    "PARAM c[9] = { program.local[0..7],\n"
+    "		{ 1, 2 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R1.x, R0, texture[2], 2D;\n"
+    "MUL R0.xy, fragment.position, c[5];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "ADD R1.x, -R1, c[8];\n"
+    "MUL R1, fragment.color.primary, R1.x;\n"
+    "MUL R2.xyz, R1.w, R0;\n"
+    "MAD R3.xyz, R1, R0.w, R2;\n"
+    "MUL R2.xyz, R1, R0;\n"
+    "MAD R2.xyz, -R2, c[8].y, R3;\n"
+    "ADD R2.w, -R0, c[8].x;\n"
+    "MAD R1.xyz, R1, R2.w, R2;\n"
+    "ADD R2.x, -R1.w, c[8];\n"
+    "MAD R2.xyz, R0, R2.x, R1;\n"
+    "ADD R1.z, R1.w, R0.w;\n"
+    "MAD R2.w, -R1, R0, R1.z;\n"
+    "ADD R1.xy, fragment.position, c[6];\n"
+    "MUL R1.xy, R1, c[4];\n"
+    "TEX R1, R1, texture[1], 2D;\n"
+    "ADD R2, R2, -R0;\n"
+    "DP4 R1.x, R1, c[7];\n"
+    "MAD result.color, R1.x, R2, R0;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_SIMPLE_PORTER_DUFF_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[8] = { program.local[0..6],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R1.x, R0, texture[1], 2D;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[6].xyxy;\n"
+    "TEX R0, R0.zwzw, texture[0], 2D;\n"
+    "MUL R2.xyz, R0, c[4].y;\n"
+    "ADD R1.x, -R1, c[7];\n"
+    "MUL R1, fragment.color.primary, R1.x;\n"
+    "MUL R3.xyz, R1.w, R2;\n"
+    "MUL R2.xyz, R1, c[4].x;\n"
+    "MUL R0.xyz, R0, c[5].z;\n"
+    "MAD R2.xyz, R0.w, R2, R3;\n"
+    "ADD R2.w, -R0, c[7].x;\n"
+    "MUL R1.xyz, R1, c[5].y;\n"
+    "MAD R1.xyz, R2.w, R1, R2;\n"
+    "ADD R2.x, -R1.w, c[7];\n"
+    "MAD result.color.xyz, R2.x, R0, R1;\n"
+    "MUL R0.x, R1.w, R0.w;\n"
+    "MUL R0.z, R0.w, R2.x;\n"
+    "MUL R0.y, R1.w, R2.w;\n"
+    "DP3 result.color.w, R0, c[5];\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_MULTIPLY_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[6] = { program.local[0..4],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R1.x, R0, texture[1], 2D;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[4].xyxy;\n"
+    "TEX R0, R0.zwzw, texture[0], 2D;\n"
+    "ADD R1.x, -R1, c[5];\n"
+    "MUL R1, fragment.color.primary, R1.x;\n"
+    "ADD R2.x, -R0.w, c[5];\n"
+    "MUL R2.xyz, R1, R2.x;\n"
+    "MAD R1.xyz, R1, R0, R2;\n"
+    "ADD R2.x, R1.w, R0.w;\n"
+    "ADD R2.y, -R1.w, c[5].x;\n"
+    "MAD result.color.xyz, R0, R2.y, R1;\n"
+    "MAD result.color.w, -R1, R0, R2.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_SCREEN_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[6] = { program.local[0..4],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R0.x, R0, texture[1], 2D;\n"
+    "ADD R1.x, -R0, c[5];\n"
+    "MUL R0.zw, fragment.position.xyxy, c[4].xyxy;\n"
+    "TEX R0, R0.zwzw, texture[0], 2D;\n"
+    "MUL R1, fragment.color.primary, R1.x;\n"
+    "ADD R2, R1, R0;\n"
+    "MAD result.color, -R1, R0, R2;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_OVERLAY_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[6] = { program.local[0..4],\n"
+    "		{ 1, 2 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R0.x, R0, texture[1], 2D;\n"
+    "ADD R0.x, -R0, c[5];\n"
+    "MUL R1, fragment.color.primary, R0.x;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[4].xyxy;\n"
+    "TEX R0, R0.zwzw, texture[0], 2D;\n"
+    "ADD R3.xyz, R1.w, -R1;\n"
+    "ADD R2.xyz, R0.w, -R0;\n"
+    "MUL R2.xyz, R2, R3;\n"
+    "ADD R2.w, -R0, c[5].x;\n"
+    "MUL R2.xyz, R2, c[5].y;\n"
+    "MAD R2.xyz, R1.w, R0.w, -R2;\n"
+    "MAD R2.xyz, R1, R2.w, R2;\n"
+    "MUL R3.xyz, R1, R2.w;\n"
+    "MUL R1.xyz, R1, R0;\n"
+    "ADD R2.w, -R1, c[5].x;\n"
+    "MAD R1.xyz, R1, c[5].y, R3;\n"
+    "MAD R1.xyz, R0, R2.w, R1;\n"
+    "MAD R2.xyz, R0, R2.w, R2;\n"
+    "MUL R0.xyz, R0, c[5].y;\n"
+    "ADD R2.w, R1, R0;\n"
+    "ADD R2.xyz, R2, -R1;\n"
+    "SGE R0.xyz, R0, R0.w;\n"
+    "MAD result.color.xyz, R0, R2, R1;\n"
+    "MAD result.color.w, -R1, R0, R2;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_DARKEN_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[6] = { program.local[0..4],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R0.x, R0, texture[1], 2D;\n"
+    "ADD R1.x, -R0, c[5];\n"
+    "MUL R0.zw, fragment.position.xyxy, c[4].xyxy;\n"
+    "TEX R0, R0.zwzw, texture[0], 2D;\n"
+    "MUL R1, fragment.color.primary, R1.x;\n"
+    "MUL R2.xyz, R1, R0.w;\n"
+    "MUL R3.xyz, R1.w, R0;\n"
+    "MIN R2.xyz, R2, R3;\n"
+    "ADD R2.w, -R0, c[5].x;\n"
+    "MAD R1.xyz, R1, R2.w, R2;\n"
+    "ADD R2.x, R1.w, R0.w;\n"
+    "ADD R2.y, -R1.w, c[5].x;\n"
+    "MAD result.color.xyz, R0, R2.y, R1;\n"
+    "MAD result.color.w, -R1, R0, R2.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_LIGHTEN_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[6] = { program.local[0..4],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R0.x, R0, texture[1], 2D;\n"
+    "ADD R1.x, -R0, c[5];\n"
+    "MUL R0.zw, fragment.position.xyxy, c[4].xyxy;\n"
+    "TEX R0, R0.zwzw, texture[0], 2D;\n"
+    "MUL R1, fragment.color.primary, R1.x;\n"
+    "MUL R2.xyz, R1, R0.w;\n"
+    "MUL R3.xyz, R1.w, R0;\n"
+    "MAX R2.xyz, R2, R3;\n"
+    "ADD R2.w, -R0, c[5].x;\n"
+    "MAD R1.xyz, R1, R2.w, R2;\n"
+    "ADD R2.x, R1.w, R0.w;\n"
+    "ADD R2.y, -R1.w, c[5].x;\n"
+    "MAD result.color.xyz, R0, R2.y, R1;\n"
+    "MAD result.color.w, -R1, R0, R2.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_COLORDODGE_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[6] = { program.local[0..4],\n"
+    "		{ 1, 1e-006 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R0.x, R0, texture[1], 2D;\n"
+    "ADD R0.x, -R0, c[5];\n"
+    "MUL R1, fragment.color.primary, R0.x;\n"
+    "MAX R0.x, R1.w, c[5].y;\n"
+    "RCP R0.x, R0.x;\n"
+    "MAD R3.xyz, -R1, R0.x, c[5].x;\n"
+    "MAX R3.xyz, R3, c[5].y;\n"
+    "MUL R0.xy, fragment.position, c[4];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "ADD R2.x, -R1.w, c[5];\n"
+    "MUL R2.xyz, R0, R2.x;\n"
+    "ADD R2.w, -R0, c[5].x;\n"
+    "MAD R2.xyz, R1, R2.w, R2;\n"
+    "MUL R0.xyz, R1.w, R0;\n"
+    "RCP R3.x, R3.x;\n"
+    "RCP R3.y, R3.y;\n"
+    "RCP R3.z, R3.z;\n"
+    "MAD R3.xyz, R0, R3, R2;\n"
+    "MAD R0.xyz, R1, R0.w, R0;\n"
+    "MAD R2.xyz, R1.w, R0.w, R2;\n"
+    "MUL R2.w, R1, R0;\n"
+    "ADD R1.x, R1.w, R0.w;\n"
+    "ADD R2.xyz, R2, -R3;\n"
+    "SGE R0.xyz, R0, R2.w;\n"
+    "MAD result.color.xyz, R0, R2, R3;\n"
+    "MAD result.color.w, -R1, R0, R1.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_COLORBURN_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[6] = { program.local[0..4],\n"
+    "		{ 1, 9.9999997e-006 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "TEMP R5;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R0.x, R0, texture[1], 2D;\n"
+    "ADD R1.x, -R0, c[5];\n"
+    "MUL R1, fragment.color.primary, R1.x;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[4].xyxy;\n"
+    "TEX R0, R0.zwzw, texture[0], 2D;\n"
+    "MUL R2.xyz, R1.w, R0;\n"
+    "MAD R3.xyz, R1, R0.w, R2;\n"
+    "ADD R2.w, -R0, c[5].x;\n"
+    "MAD R2.xyz, -R1.w, R0.w, R3;\n"
+    "MUL R4.xyz, R1.w, R2;\n"
+    "MAX R2.xyz, R1, c[5].y;\n"
+    "MUL R5.xyz, R1, R2.w;\n"
+    "ADD R3.w, -R1, c[5].x;\n"
+    "RCP R2.x, R2.x;\n"
+    "RCP R2.y, R2.y;\n"
+    "RCP R2.z, R2.z;\n"
+    "MAD R2.xyz, R4, R2, R5;\n"
+    "MUL R4.xyz, R0, R3.w;\n"
+    "MAD R0.xyz, R0, R3.w, R2;\n"
+    "MAD R1.xyz, R1, R2.w, R4;\n"
+    "MUL R2.x, R1.w, R0.w;\n"
+    "ADD R2.w, R1, R0;\n"
+    "ADD R0.xyz, R0, -R1;\n"
+    "SGE R2.xyz, R3, R2.x;\n"
+    "MAD result.color.xyz, R2, R0, R1;\n"
+    "MAD result.color.w, -R1, R0, R2;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_HARDLIGHT_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[6] = { program.local[0..4],\n"
+    "		{ 1, 2 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R0.x, R0, texture[1], 2D;\n"
+    "ADD R0.x, -R0, c[5];\n"
+    "MUL R1, fragment.color.primary, R0.x;\n"
+    "MUL R0.zw, fragment.position.xyxy, c[4].xyxy;\n"
+    "TEX R0, R0.zwzw, texture[0], 2D;\n"
+    "ADD R2.w, -R0, c[5].x;\n"
+    "ADD R3.xyz, R1.w, -R1;\n"
+    "ADD R2.xyz, R0.w, -R0;\n"
+    "MUL R2.xyz, R2, R3;\n"
+    "MUL R2.xyz, R2, c[5].y;\n"
+    "MAD R2.xyz, R1.w, R0.w, -R2;\n"
+    "MAD R2.xyz, R1, R2.w, R2;\n"
+    "MUL R4.xyz, R1, R2.w;\n"
+    "MUL R3.xyz, R1, R0;\n"
+    "MUL R1.xyz, R1, c[5].y;\n"
+    "ADD R2.w, -R1, c[5].x;\n"
+    "MAD R3.xyz, R3, c[5].y, R4;\n"
+    "MAD R3.xyz, R0, R2.w, R3;\n"
+    "MAD R0.xyz, R0, R2.w, R2;\n"
+    "ADD R2.x, R1.w, R0.w;\n"
+    "ADD R0.xyz, R0, -R3;\n"
+    "SGE R1.xyz, R1, R1.w;\n"
+    "MAD result.color.xyz, R1, R0, R3;\n"
+    "MAD result.color.w, -R1, R0, R2.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_SOFTLIGHT_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[7] = { program.local[0..4],\n"
+    "		{ 1, 2, 9.9999997e-006, 4 },\n"
+    "		{ 16, 12, 3 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "TEMP R4;\n"
+    "TEMP R5;\n"
+    "TEMP R6;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R1.xyz, R0, c[3];\n"
+    "RCP R1.z, R1.z;\n"
+    "MUL R1.xy, R1, R1.z;\n"
+    "MUL R1.xy, R1, c[0];\n"
+    "TEX R1.x, R1, texture[1], 2D;\n"
+    "MUL R0.xy, fragment.position, c[4];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "MAX R1.z, R0.w, c[5];\n"
+    "RCP R1.z, R1.z;\n"
+    "MUL R3.xyz, R0, R1.z;\n"
+    "MAD R2.xyz, R3, c[6].x, -c[6].y;\n"
+    "ADD R1.x, -R1, c[5];\n"
+    "MUL R1, fragment.color.primary, R1.x;\n"
+    "MAD R4.xyz, R3, R2, c[6].z;\n"
+    "MAD R2.xyz, R1, c[5].y, -R1.w;\n"
+    "MUL R5.xyz, R0.w, R2;\n"
+    "MUL R6.xyz, R5, R4;\n"
+    "RSQ R2.w, R3.x;\n"
+    "RCP R4.x, R2.w;\n"
+    "RSQ R2.w, R3.y;\n"
+    "RSQ R3.w, R3.z;\n"
+    "RCP R4.y, R2.w;\n"
+    "RCP R4.z, R3.w;\n"
+    "ADD R4.xyz, -R3, R4;\n"
+    "MUL R6.xyz, R3, R6;\n"
+    "MUL R4.xyz, R5, R4;\n"
+    "ADD R3.xyz, -R3, c[5].x;\n"
+    "MAD R2.xyz, R2, R3, R1.w;\n"
+    "MUL R3.xyz, R1, c[5].y;\n"
+    "MAD R5.xyz, R1.w, R0, R6;\n"
+    "MAD R4.xyz, R1.w, R0, R4;\n"
+    "ADD R6.xyz, R4, -R5;\n"
+    "MUL R4.xyz, R0, c[5].w;\n"
+    "SGE R4.xyz, R4, R0.w;\n"
+    "MAD R4.xyz, R4, R6, R5;\n"
+    "MAD R4.xyz, -R0, R2, R4;\n"
+    "MUL R2.xyz, R0, R2;\n"
+    "SGE R3.xyz, R3, R1.w;\n"
+    "MAD R2.xyz, R3, R4, R2;\n"
+    "ADD R2.w, -R0, c[5].x;\n"
+    "MAD R2.xyz, R1, R2.w, R2;\n"
+    "ADD R1.x, R1.w, R0.w;\n"
+    "ADD R1.y, -R1.w, c[5].x;\n"
+    "MAD result.color.xyz, R0, R1.y, R2;\n"
+    "MAD result.color.w, -R1, R0, R1.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_DIFFERENCE_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[6] = { program.local[0..4],\n"
+    "		{ 1, 2 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R0.x, R0, texture[1], 2D;\n"
+    "ADD R1.x, -R0, c[5];\n"
+    "MUL R0.zw, fragment.position.xyxy, c[4].xyxy;\n"
+    "TEX R0, R0.zwzw, texture[0], 2D;\n"
+    "MUL R1, fragment.color.primary, R1.x;\n"
+    "MUL R3.xyz, R1.w, R0;\n"
+    "MUL R2.xyz, R1, R0.w;\n"
+    "ADD R0.xyz, R1, R0;\n"
+    "MIN R2.xyz, R2, R3;\n"
+    "ADD R1.x, R1.w, R0.w;\n"
+    "MAD result.color.xyz, -R2, c[5].y, R0;\n"
+    "MAD result.color.w, -R1, R0, R1.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_EXCLUSION_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[6] = { program.local[0..4],\n"
+    "		{ 1, 2 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "TEMP R2;\n"
+    "TEMP R3;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R0.x, R0, texture[1], 2D;\n"
+    "ADD R1.x, -R0, c[5];\n"
+    "MUL R0.zw, fragment.position.xyxy, c[4].xyxy;\n"
+    "TEX R0, R0.zwzw, texture[0], 2D;\n"
+    "MUL R1, fragment.color.primary, R1.x;\n"
+    "MUL R2.xyz, R1.w, R0;\n"
+    "MAD R3.xyz, R1, R0.w, R2;\n"
+    "MUL R2.xyz, R1, R0;\n"
+    "MAD R2.xyz, -R2, c[5].y, R3;\n"
+    "ADD R2.w, -R0, c[5].x;\n"
+    "MAD R1.xyz, R1, R2.w, R2;\n"
+    "ADD R2.x, R1.w, R0.w;\n"
+    "ADD R2.y, -R1.w, c[5].x;\n"
+    "MAD result.color.xyz, R0, R2.y, R1;\n"
+    "MAD result.color.w, -R1, R0, R2.x;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODE_BLEND_MODE_MASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[8] = { program.local[0..6],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "TEMP R1;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.zw, R0.xyxy, R0.z;\n"
+    "MUL R0.zw, R0, c[0].xyxy;\n"
+    "TEX R1.x, R0.zwzw, texture[1], 2D;\n"
+    "ADD R0.xy, fragment.position, c[5];\n"
+    "MUL R0.xy, R0, c[4];\n"
+    "TEX R0, R0, texture[0], 2D;\n"
+    "DP4 R1.y, R0, c[6];\n"
+    "ADD R1.x, -R1, c[7];\n"
+    "MUL R0, fragment.color.primary, R1.x;\n"
+    "MUL result.color, R0, R1.y;\n"
+    "END\n"
+    ;
+
+static const char *FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODE_BLEND_MODE_NOMASK =
+    "!!ARBfp1.0\n"
+    "PARAM c[5] = { program.local[0..3],\n"
+    "		{ 1 } };\n"
+    "TEMP R0;\n"
+    "MUL R0.xyz, fragment.position.y, c[2];\n"
+    "MAD R0.xyz, fragment.position.x, c[1], R0;\n"
+    "ADD R0.xyz, R0, c[3];\n"
+    "RCP R0.z, R0.z;\n"
+    "MUL R0.xy, R0, R0.z;\n"
+    "MUL R0.xy, R0, c[0];\n"
+    "TEX R0.x, R0, texture[0], 2D;\n"
+    "ADD R0.x, -R0, c[4];\n"
+    "MUL result.color, fragment.color.primary, R0.x;\n"
+    "END\n"
+    ;
+
+static const char *mask_fragment_program_sources[num_fragment_masks] = {
+    FragmentProgram_FRAGMENT_PROGRAM_MASK_TRAPEZOID_AA,
+    FragmentProgram_FRAGMENT_PROGRAM_MASK_ELLIPSE_AA,
+};
+
+static const char *painter_fragment_program_sources[num_fragment_brushes][num_fragment_composition_modes] = {
+    {
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_SIMPLE_PORTER_DUFF,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_MULTIPLY,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_SCREEN,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_OVERLAY,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_DARKEN,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_LIGHTEN,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_COLORDODGE,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_COLORBURN,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_HARDLIGHT,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_SOFTLIGHT,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_DIFFERENCE,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_EXCLUSION,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_SIMPLE_PORTER_DUFF_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_MULTIPLY_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_SCREEN_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_OVERLAY_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_DARKEN_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_LIGHTEN_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_COLORDODGE_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_COLORBURN_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_HARDLIGHT_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_SOFTLIGHT_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_DIFFERENCE_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODES_EXCLUSION_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODE_BLEND_MODE_MASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_SOLID_COMPOSITION_MODE_BLEND_MODE_NOMASK,
+    },
+    {
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_SIMPLE_PORTER_DUFF,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_MULTIPLY,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_SCREEN,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_OVERLAY,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_DARKEN,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_LIGHTEN,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_COLORDODGE,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_COLORBURN,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_HARDLIGHT,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_SOFTLIGHT,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_DIFFERENCE,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_EXCLUSION,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_SIMPLE_PORTER_DUFF_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_MULTIPLY_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_SCREEN_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_OVERLAY_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_DARKEN_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_LIGHTEN_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_COLORDODGE_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_COLORBURN_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_HARDLIGHT_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_SOFTLIGHT_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_DIFFERENCE_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODES_EXCLUSION_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODE_BLEND_MODE_MASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_RADIAL_COMPOSITION_MODE_BLEND_MODE_NOMASK,
+    },
+    {
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_SIMPLE_PORTER_DUFF,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_MULTIPLY,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_SCREEN,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_OVERLAY,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_DARKEN,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_LIGHTEN,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_COLORDODGE,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_COLORBURN,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_HARDLIGHT,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_SOFTLIGHT,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_DIFFERENCE,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_EXCLUSION,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_SIMPLE_PORTER_DUFF_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_MULTIPLY_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_SCREEN_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_OVERLAY_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_DARKEN_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_LIGHTEN_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_COLORDODGE_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_COLORBURN_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_HARDLIGHT_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_SOFTLIGHT_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_DIFFERENCE_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODES_EXCLUSION_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODE_BLEND_MODE_MASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_CONICAL_COMPOSITION_MODE_BLEND_MODE_NOMASK,
+    },
+    {
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_SIMPLE_PORTER_DUFF,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_MULTIPLY,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_SCREEN,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_OVERLAY,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_DARKEN,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_LIGHTEN,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_COLORDODGE,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_COLORBURN,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_HARDLIGHT,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_SOFTLIGHT,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_DIFFERENCE,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_EXCLUSION,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_SIMPLE_PORTER_DUFF_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_MULTIPLY_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_SCREEN_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_OVERLAY_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_DARKEN_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_LIGHTEN_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_COLORDODGE_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_COLORBURN_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_HARDLIGHT_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_SOFTLIGHT_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_DIFFERENCE_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODES_EXCLUSION_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODE_BLEND_MODE_MASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_LINEAR_COMPOSITION_MODE_BLEND_MODE_NOMASK,
+    },
+    {
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_SIMPLE_PORTER_DUFF,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_MULTIPLY,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_SCREEN,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_OVERLAY,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_DARKEN,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_LIGHTEN,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_COLORDODGE,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_COLORBURN,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_HARDLIGHT,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_SOFTLIGHT,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_DIFFERENCE,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_EXCLUSION,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_SIMPLE_PORTER_DUFF_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_MULTIPLY_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_SCREEN_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_OVERLAY_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_DARKEN_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_LIGHTEN_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_COLORDODGE_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_COLORBURN_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_HARDLIGHT_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_SOFTLIGHT_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_DIFFERENCE_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODES_EXCLUSION_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODE_BLEND_MODE_MASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_TEXTURE_COMPOSITION_MODE_BLEND_MODE_NOMASK,
+    },
+    {
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_SIMPLE_PORTER_DUFF,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_MULTIPLY,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_SCREEN,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_OVERLAY,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_DARKEN,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_LIGHTEN,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_COLORDODGE,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_COLORBURN,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_HARDLIGHT,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_SOFTLIGHT,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_DIFFERENCE,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_EXCLUSION,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_SIMPLE_PORTER_DUFF_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_MULTIPLY_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_SCREEN_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_OVERLAY_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_DARKEN_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_LIGHTEN_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_COLORDODGE_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_COLORBURN_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_HARDLIGHT_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_SOFTLIGHT_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_DIFFERENCE_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODES_EXCLUSION_NOMASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODE_BLEND_MODE_MASK,
+        FragmentProgram_FRAGMENT_PROGRAM_BRUSH_PATTERN_COMPOSITION_MODE_BLEND_MODE_NOMASK,
+    },
+};
+
+static int painter_variable_locations[num_fragment_brushes][num_fragment_composition_modes][num_fragment_variables] = {
+    {
+        { -1, -1, -1, 2, -1, 0, 5, -1, 1, 3, 1, 0, -1, 4, -1, -1, -1, -1, -1, },
+        { -1, -1, -1, 0, -1, -1, 3, -1, -1, 1, 1, 0, -1, 2, -1, -1, -1, -1, -1, },
+        { -1, -1, -1, 0, -1, -1, 3, -1, -1, 1, 1, 0, -1, 2, -1, -1, -1, -1, -1, },
+        { -1, -1, -1, 0, -1, -1, 3, -1, -1, 1, 1, 0, -1, 2, -1, -1, -1, -1, -1, },
+        { -1, -1, -1, 0, -1, -1, 3, -1, -1, 1, 1, 0, -1, 2, -1, -1, -1, -1, -1, },
+        { -1, -1, -1, 0, -1, -1, 3, -1, -1, 1, 1, 0, -1, 2, -1, -1, -1, -1, -1, },
+        { -1, -1, -1, 0, -1, -1, 3, -1, -1, 1, 1, 0, -1, 2, -1, -1, -1, -1, -1, },
+        { -1, -1, -1, 0, -1, -1, 3, -1, -1, 1, 1, 0, -1, 2, -1, -1, -1, -1, -1, },
+        { -1, -1, -1, 0, -1, -1, 3, -1, -1, 1, 1, 0, -1, 2, -1, -1, -1, -1, -1, },
+        { -1, -1, -1, 0, -1, -1, 3, -1, -1, 1, 1, 0, -1, 2, -1, -1, -1, -1, -1, },
+        { -1, -1, -1, 0, -1, -1, 3, -1, -1, 1, 1, 0, -1, 2, -1, -1, -1, -1, -1, },
+        { -1, -1, -1, 0, -1, -1, 3, -1, -1, 1, 1, 0, -1, 2, -1, -1, -1, -1, -1, },
+        { -1, -1, -1, -1, -1, 0, -1, -1, 1, 2, -1, 0, -1, -1, -1, -1, -1, -1, -1, },
+        { -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, 0, -1, -1, -1, -1, -1, -1, -1, },
+        { -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, 0, -1, -1, -1, -1, -1, -1, -1, },
+        { -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, 0, -1, -1, -1, -1, -1, -1, -1, },
+        { -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, 0, -1, -1, -1, -1, -1, -1, -1, },
+        { -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, 0, -1, -1, -1, -1, -1, -1, -1, },
+        { -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, 0, -1, -1, -1, -1, -1, -1, -1, },
+        { -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, 0, -1, -1, -1, -1, -1, -1, -1, },
+        { -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, 0, -1, -1, -1, -1, -1, -1, -1, },
+        { -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, 0, -1, -1, -1, -1, -1, -1, -1, },
+        { -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, 0, -1, -1, -1, -1, -1, -1, -1, },
+        { -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, 0, -1, -1, -1, -1, -1, -1, -1, },
+        { -1, -1, -1, 0, -1, -1, 2, -1, -1, -1, 0, -1, -1, 1, -1, -1, -1, -1, -1, },
+        { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
+    },
+    {
+        { -1, -1, 3, 7, 4, 5, 10, -1, 6, 8, 1, 0, 2, 9, -1, 1, 0, 2, -1, },
+        { -1, -1, 3, 5, 4, -1, 8, -1, -1, 6, 1, 0, 2, 7, -1, 1, 0, 2, -1, },
+        { -1, -1, 3, 5, 4, -1, 8, -1, -1, 6, 1, 0, 2, 7, -1, 1, 0, 2, -1, },
+        { -1, -1, 3, 5, 4, -1, 8, -1, -1, 6, 1, 0, 2, 7, -1, 1, 0, 2, -1, },
+        { -1, -1, 3, 5, 4, -1, 8, -1, -1, 6, 1, 0, 2, 7, -1, 1, 0, 2, -1, },
+        { -1, -1, 3, 5, 4, -1, 8, -1, -1, 6, 1, 0, 2, 7, -1, 1, 0, 2, -1, },
+        { -1, -1, 3, 5, 4, -1, 8, -1, -1, 6, 1, 0, 2, 7, -1, 1, 0, 2, -1, },
+        { -1, -1, 3, 5, 4, -1, 8, -1, -1, 6, 1, 0, 2, 7, -1, 1, 0, 2, -1, },
+        { -1, -1, 3, 5, 4, -1, 8, -1, -1, 6, 1, 0, 2, 7, -1, 1, 0, 2, -1, },
+        { -1, -1, 3, 5, 4, -1, 8, -1, -1, 6, 1, 0, 2, 7, -1, 1, 0, 2, -1, },
+        { -1, -1, 3, 5, 4, -1, 8, -1, -1, 6, 1, 0, 2, 7, -1, 1, 0, 2, -1, },
+        { -1, -1, 3, 5, 4, -1, 8, -1, -1, 6, 1, 0, 2, 7, -1, 1, 0, 2, -1, },
+        { -1, -1, 3, -1, 4, 5, -1, -1, 6, 7, -1, 0, 1, -1, -1, 1, 0, 2, -1, },
+        { -1, -1, 3, -1, 4, -1, -1, -1, -1, 5, -1, 0, 1, -1, -1, 1, 0, 2, -1, },
+        { -1, -1, 3, -1, 4, -1, -1, -1, -1, 5, -1, 0, 1, -1, -1, 1, 0, 2, -1, },
+        { -1, -1, 3, -1, 4, -1, -1, -1, -1, 5, -1, 0, 1, -1, -1, 1, 0, 2, -1, },
+        { -1, -1, 3, -1, 4, -1, -1, -1, -1, 5, -1, 0, 1, -1, -1, 1, 0, 2, -1, },
+        { -1, -1, 3, -1, 4, -1, -1, -1, -1, 5, -1, 0, 1, -1, -1, 1, 0, 2, -1, },
+        { -1, -1, 3, -1, 4, -1, -1, -1, -1, 5, -1, 0, 1, -1, -1, 1, 0, 2, -1, },
+        { -1, -1, 3, -1, 4, -1, -1, -1, -1, 5, -1, 0, 1, -1, -1, 1, 0, 2, -1, },
+        { -1, -1, 3, -1, 4, -1, -1, -1, -1, 5, -1, 0, 1, -1, -1, 1, 0, 2, -1, },
+        { -1, -1, 3, -1, 4, -1, -1, -1, -1, 5, -1, 0, 1, -1, -1, 1, 0, 2, -1, },
+        { -1, -1, 3, -1, 4, -1, -1, -1, -1, 5, -1, 0, 1, -1, -1, 1, 0, 2, -1, },
+        { -1, -1, 3, -1, 4, -1, -1, -1, -1, 5, -1, 0, 1, -1, -1, 1, 0, 2, -1, },
+        { -1, -1, 3, 5, 4, -1, 7, -1, -1, -1, 0, -1, 1, 6, -1, 1, 0, 2, -1, },
+        { -1, -1, 3, -1, 4, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, 1, 0, 2, -1, },
+    },
+    {
+        { -1, -1, 2, 6, 3, 4, 9, -1, 5, 7, 1, 0, 2, 8, -1, -1, -1, 1, 0, },
+        { -1, -1, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, 2, 6, -1, -1, -1, 1, 0, },
+        { -1, -1, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, 2, 6, -1, -1, -1, 1, 0, },
+        { -1, -1, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, 2, 6, -1, -1, -1, 1, 0, },
+        { -1, -1, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, 2, 6, -1, -1, -1, 1, 0, },
+        { -1, -1, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, 2, 6, -1, -1, -1, 1, 0, },
+        { -1, -1, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, 2, 6, -1, -1, -1, 1, 0, },
+        { -1, -1, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, 2, 6, -1, -1, -1, 1, 0, },
+        { -1, -1, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, 2, 6, -1, -1, -1, 1, 0, },
+        { -1, -1, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, 2, 6, -1, -1, -1, 1, 0, },
+        { -1, -1, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, 2, 6, -1, -1, -1, 1, 0, },
+        { -1, -1, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, 2, 6, -1, -1, -1, 1, 0, },
+        { -1, -1, 2, -1, 3, 4, -1, -1, 5, 6, -1, 0, 1, -1, -1, -1, -1, 1, 0, },
+        { -1, -1, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, 1, -1, -1, -1, -1, 1, 0, },
+        { -1, -1, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, 1, -1, -1, -1, -1, 1, 0, },
+        { -1, -1, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, 1, -1, -1, -1, -1, 1, 0, },
+        { -1, -1, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, 1, -1, -1, -1, -1, 1, 0, },
+        { -1, -1, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, 1, -1, -1, -1, -1, 1, 0, },
+        { -1, -1, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, 1, -1, -1, -1, -1, 1, 0, },
+        { -1, -1, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, 1, -1, -1, -1, -1, 1, 0, },
+        { -1, -1, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, 1, -1, -1, -1, -1, 1, 0, },
+        { -1, -1, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, 1, -1, -1, -1, -1, 1, 0, },
+        { -1, -1, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, 1, -1, -1, -1, -1, 1, 0, },
+        { -1, -1, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, 1, -1, -1, -1, -1, 1, 0, },
+        { -1, -1, 2, 4, 3, -1, 6, -1, -1, -1, 0, -1, 1, 5, -1, -1, -1, 1, 0, },
+        { -1, -1, 2, -1, 3, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, 1, 0, },
+    },
+    {
+        { -1, 0, 2, 6, 3, 4, 9, -1, 5, 7, 1, 0, 2, 8, -1, -1, -1, 1, -1, },
+        { -1, 0, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, 2, 6, -1, -1, -1, 1, -1, },
+        { -1, 0, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, 2, 6, -1, -1, -1, 1, -1, },
+        { -1, 0, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, 2, 6, -1, -1, -1, 1, -1, },
+        { -1, 0, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, 2, 6, -1, -1, -1, 1, -1, },
+        { -1, 0, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, 2, 6, -1, -1, -1, 1, -1, },
+        { -1, 0, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, 2, 6, -1, -1, -1, 1, -1, },
+        { -1, 0, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, 2, 6, -1, -1, -1, 1, -1, },
+        { -1, 0, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, 2, 6, -1, -1, -1, 1, -1, },
+        { -1, 0, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, 2, 6, -1, -1, -1, 1, -1, },
+        { -1, 0, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, 2, 6, -1, -1, -1, 1, -1, },
+        { -1, 0, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, 2, 6, -1, -1, -1, 1, -1, },
+        { -1, 0, 2, -1, 3, 4, -1, -1, 5, 6, -1, 0, 1, -1, -1, -1, -1, 1, -1, },
+        { -1, 0, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, 1, -1, -1, -1, -1, 1, -1, },
+        { -1, 0, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, 1, -1, -1, -1, -1, 1, -1, },
+        { -1, 0, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, 1, -1, -1, -1, -1, 1, -1, },
+        { -1, 0, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, 1, -1, -1, -1, -1, 1, -1, },
+        { -1, 0, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, 1, -1, -1, -1, -1, 1, -1, },
+        { -1, 0, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, 1, -1, -1, -1, -1, 1, -1, },
+        { -1, 0, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, 1, -1, -1, -1, -1, 1, -1, },
+        { -1, 0, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, 1, -1, -1, -1, -1, 1, -1, },
+        { -1, 0, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, 1, -1, -1, -1, -1, 1, -1, },
+        { -1, 0, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, 1, -1, -1, -1, -1, 1, -1, },
+        { -1, 0, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, 1, -1, -1, -1, -1, 1, -1, },
+        { -1, 0, 2, 4, 3, -1, 6, -1, -1, -1, 0, -1, 1, 5, -1, -1, -1, 1, -1, },
+        { -1, 0, 2, -1, 3, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, 1, -1, },
+    },
+    {
+        { 2, -1, 2, 6, 3, 4, 9, -1, 5, 7, 1, 0, -1, 8, 0, -1, -1, 1, -1, },
+        { 2, -1, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, -1, 6, 0, -1, -1, 1, -1, },
+        { 2, -1, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, -1, 6, 0, -1, -1, 1, -1, },
+        { 2, -1, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, -1, 6, 0, -1, -1, 1, -1, },
+        { 2, -1, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, -1, 6, 0, -1, -1, 1, -1, },
+        { 2, -1, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, -1, 6, 0, -1, -1, 1, -1, },
+        { 2, -1, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, -1, 6, 0, -1, -1, 1, -1, },
+        { 2, -1, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, -1, 6, 0, -1, -1, 1, -1, },
+        { 2, -1, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, -1, 6, 0, -1, -1, 1, -1, },
+        { 2, -1, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, -1, 6, 0, -1, -1, 1, -1, },
+        { 2, -1, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, -1, 6, 0, -1, -1, 1, -1, },
+        { 2, -1, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, -1, 6, 0, -1, -1, 1, -1, },
+        { 1, -1, 2, -1, 3, 4, -1, -1, 5, 6, -1, 0, -1, -1, 0, -1, -1, 1, -1, },
+        { 1, -1, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, -1, -1, 0, -1, -1, 1, -1, },
+        { 1, -1, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, -1, -1, 0, -1, -1, 1, -1, },
+        { 1, -1, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, -1, -1, 0, -1, -1, 1, -1, },
+        { 1, -1, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, -1, -1, 0, -1, -1, 1, -1, },
+        { 1, -1, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, -1, -1, 0, -1, -1, 1, -1, },
+        { 1, -1, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, -1, -1, 0, -1, -1, 1, -1, },
+        { 1, -1, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, -1, -1, 0, -1, -1, 1, -1, },
+        { 1, -1, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, -1, -1, 0, -1, -1, 1, -1, },
+        { 1, -1, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, -1, -1, 0, -1, -1, 1, -1, },
+        { 1, -1, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, -1, -1, 0, -1, -1, 1, -1, },
+        { 1, -1, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, -1, -1, 0, -1, -1, 1, -1, },
+        { 1, -1, 2, 4, 3, -1, 6, -1, -1, -1, 0, -1, -1, 5, 0, -1, -1, 1, -1, },
+        { 0, -1, 2, -1, 3, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, 1, -1, },
+    },
+    {
+        { 2, -1, 2, 6, 3, 4, 9, -1, 5, 7, 1, 0, -1, 8, 0, -1, -1, 1, -1, },
+        { 2, -1, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, -1, 6, 0, -1, -1, 1, -1, },
+        { 2, -1, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, -1, 6, 0, -1, -1, 1, -1, },
+        { 2, -1, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, -1, 6, 0, -1, -1, 1, -1, },
+        { 2, -1, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, -1, 6, 0, -1, -1, 1, -1, },
+        { 2, -1, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, -1, 6, 0, -1, -1, 1, -1, },
+        { 2, -1, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, -1, 6, 0, -1, -1, 1, -1, },
+        { 2, -1, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, -1, 6, 0, -1, -1, 1, -1, },
+        { 2, -1, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, -1, 6, 0, -1, -1, 1, -1, },
+        { 2, -1, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, -1, 6, 0, -1, -1, 1, -1, },
+        { 2, -1, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, -1, 6, 0, -1, -1, 1, -1, },
+        { 2, -1, 2, 4, 3, -1, 7, -1, -1, 5, 1, 0, -1, 6, 0, -1, -1, 1, -1, },
+        { 1, -1, 2, -1, 3, 4, -1, -1, 5, 6, -1, 0, -1, -1, 0, -1, -1, 1, -1, },
+        { 1, -1, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, -1, -1, 0, -1, -1, 1, -1, },
+        { 1, -1, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, -1, -1, 0, -1, -1, 1, -1, },
+        { 1, -1, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, -1, -1, 0, -1, -1, 1, -1, },
+        { 1, -1, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, -1, -1, 0, -1, -1, 1, -1, },
+        { 1, -1, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, -1, -1, 0, -1, -1, 1, -1, },
+        { 1, -1, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, -1, -1, 0, -1, -1, 1, -1, },
+        { 1, -1, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, -1, -1, 0, -1, -1, 1, -1, },
+        { 1, -1, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, -1, -1, 0, -1, -1, 1, -1, },
+        { 1, -1, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, -1, -1, 0, -1, -1, 1, -1, },
+        { 1, -1, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, -1, -1, 0, -1, -1, 1, -1, },
+        { 1, -1, 2, -1, 3, -1, -1, -1, -1, 4, -1, 0, -1, -1, 0, -1, -1, 1, -1, },
+        { 1, -1, 2, 4, 3, -1, 6, -1, -1, -1, 0, -1, -1, 5, 0, -1, -1, 1, -1, },
+        { 0, -1, 2, -1, 3, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, 1, -1, },
+    },
+};
+
+static int mask_variable_locations[num_fragment_masks][num_fragment_variables] = {
+    { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
+    { -1, -1, 1, -1, 2, -1, -1, 3, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, },
+};
+
+#endif
diff --git a/src/opengl/util/generator.cpp b/src/opengl/util/generator.cpp
new file mode 100644
index 0000000000..34ff0478c7
--- /dev/null
+++ b/src/opengl/util/generator.cpp
@@ -0,0 +1,500 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QFile>
+#include <QList>
+#include <QMap>
+#include <QPair>
+#include <QSet>
+#include <QString>
+#include <QTextStream>
+
+#include <QtDebug>
+#include <cstdlib>
+
+QT_BEGIN_NAMESPACE
+
+QT_USE_NAMESPACE
+
+#define TAB "    "
+
+typedef QPair<QString, QString> QStringPair;
+
+QString readSourceFile(const QString &sourceFile, bool fragmentProgram = false)
+{
+    QFile file(sourceFile);
+
+    if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
+        qDebug() << "Missing source file" << sourceFile;
+        exit(0);
+    }
+
+    QString source;
+
+    QTextStream in(&file);
+    while (!in.atEnd()) {
+        QString line = in.readLine();
+
+        if (fragmentProgram && line[0] == '#' && !line.startsWith("#var"))
+            continue;
+
+        if (fragmentProgram)
+            source.append("    \"");
+
+        source.append(line);
+
+        if (fragmentProgram)
+            source.append("\\n\"");
+
+        source.append('\n');
+    }
+
+    if (fragmentProgram)
+        source.append("    ;\n");
+
+    return source;
+}
+
+QList<QStringPair> readConf(const QString &confFile)
+{
+    QFile file(confFile);
+
+    if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
+        qDebug() << "Missing file" << confFile;
+        exit(0);
+    }
+
+    QList<QStringPair> result;
+
+    QTextStream in(&file);
+    while (!in.atEnd()) {
+        QString line = in.readLine();
+
+        if (line.startsWith('#'))
+            continue;
+
+        QTextStream lineStream(&line);
+
+        QString enumerator;
+        QString sourceFile;
+
+        lineStream >> enumerator;
+
+        if (lineStream.atEnd()) {
+            qDebug() << "Error in file" << confFile << '(' << enumerator << ')';
+            exit(0);
+        }
+
+        lineStream >> sourceFile;
+
+        result << QStringPair(enumerator, readSourceFile(sourceFile));
+    }
+
+    return result;
+}
+
+QString compileSource(const QString &source)
+{
+    {
+        QFile tempSourceFile("__tmp__.glsl");
+        if (!tempSourceFile.open(QIODevice::WriteOnly | QIODevice::Text)) {
+            qDebug() << "Failed opening __tmp__.glsl";
+            exit(0);
+        }
+
+        QTextStream out(&tempSourceFile);
+        out << source;
+    }
+
+    if (std::system("cgc -quiet -oglsl -profile arbfp1 __tmp__.glsl >__tmp__.frag") == -1) {
+        qDebug() << "Failed running cgc";
+        exit(0);
+    }
+
+    return readSourceFile("__tmp__.frag", true);
+}
+
+QString getWord(QString line, int word)
+{
+    QTextStream in(&line);
+
+    QString result;
+
+    for (int i = 0; i < word; ++i)
+        in >> result;
+
+    return result;
+}
+
+static int toInt(const QByteArray &str)
+{
+    int value = 0;
+
+    for (int i = 0; i < str.size(); ++i) {
+        if (str[i] < '0' || str[i] > '9')
+            break;
+
+        value *= 10;
+        value += (str[i] - '0');
+    }
+
+    return value;
+}
+QList<int> getLocations(const QSet<QString> &variables, QString source)
+{
+    QTextStream in(&source);
+
+    QMap<QString, int> locations;
+
+    foreach (QString variable, variables)
+        locations[variable] = -1;
+
+    while (!in.atEnd()) {
+        QString line = in.readLine().trimmed();
+
+        line = line.right(line.size() - 1);
+
+        if (line.startsWith("#var")) {
+            QByteArray temp;
+            QByteArray name;
+
+            QTextStream lineStream(&line);
+
+            lineStream >> temp >> temp >> name;
+
+            int location = -1;
+
+            while (!lineStream.atEnd()) {
+                lineStream >> temp;
+
+                if (temp.startsWith("c[")) {
+                    location = toInt(temp.right(temp.size() - 2));
+                    break;
+                }
+
+                if (temp == "texunit") {
+                    lineStream >> temp;
+                    location = toInt(temp);
+                    break;
+                }
+            }
+
+            locations[name] = location;
+        }
+    }
+
+    QList<int> result;
+
+    foreach (QString variable, variables)
+        result << locations[variable];
+
+    return result;
+}
+
+// remove #var statements
+QString trimmed(QString source)
+{
+    QTextStream in(&source);
+
+    QString result;
+
+    while (!in.atEnd()) {
+        QString line = in.readLine();
+        if (!line.trimmed().startsWith("\"#"))
+            result += line + '\n';
+    }
+
+    return result;
+}
+
+void writeVariablesEnum(QTextStream &out, const char *name, const QSet<QString> &s)
+{
+    out << "enum " << name << " {";
+    QSet<QString>::const_iterator it = s.begin();
+    if (it != s.end()) {
+        out << "\n" TAB "VAR_" << it->toUpper();
+        for (++it; it != s.end(); ++it)
+            out << ",\n" TAB "VAR_" << it->toUpper();
+    }
+    out << "\n};\n\n";
+}
+
+void writeTypesEnum(QTextStream &out, const char *name, const QList<QStringPair> &s)
+{
+    out << "enum " << name << " {";
+    QList<QStringPair>::const_iterator it = s.begin();
+    if (it != s.end()) {
+        out << "\n" TAB << it->first;
+        for (++it; it != s.end(); ++it)
+            out << ",\n" TAB << it->first;
+    }
+    out << "\n};\n\n";
+}
+
+void writeIncludeFile(const QSet<QString> &variables,
+                      const QList<QStringPair> &brushes,
+                      const QList<QStringPair> &compositionModes,
+                      const QList<QStringPair> &masks,
+                      const QMap<QString, QMap<QString, QString> > &compiled)
+{
+    QFile includeFile("fragmentprograms_p.h");
+    if (!includeFile.open(QIODevice::WriteOnly | QIODevice::Text)) {
+        qDebug() << "Failed opening fragmentprograms_p.h";
+        exit(0);
+    }
+
+    QTextStream out(&includeFile);
+
+    QLatin1String tab(TAB);
+
+    out << "/****************************************************************************\n"
+           "**\n"
+           "** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).\n"
+           "** All rights reserved.\n"
+           "** Contact: Nokia Corporation (qt-info@nokia.com)\n"
+           "**\n"
+           "** This file is part of the QtOpenGL module of the Qt Toolkit.\n"
+           "**\n"
+           "** $QT_BEGIN_LICENSE:LGPL$\n"
+           "** No Commercial Usage\n"
+           "** This file contains pre-release code and may not be distributed.\n"
+           "** You may use this file in accordance with the terms and conditions\n"
+           "** contained in the Technology Preview License Agreement accompanying\n"
+           "** this package.\n"
+           "**\n"
+           "** GNU Lesser General Public License Usage\n"
+           "** Alternatively, this file may be used under the terms of the GNU Lesser\n"
+           "** General Public License version 2.1 as published by the Free Software\n"
+           "** Foundation and appearing in the file LICENSE.LGPL included in the\n"
+           "** packaging of this file.  Please review the following information to\n"
+           "** ensure the GNU Lesser General Public License version 2.1 requirements\n"
+           "** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.\n"
+           "**\n"
+           "** In addition, as a special exception, Nokia gives you certain additional\n"
+           "** rights.  These rights are described in the Nokia Qt LGPL Exception\n"
+           "** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.\n"
+           "**\n"
+           "** If you have questions regarding the use of this file, please contact\n"
+           "** Nokia at qt-info@nokia.com.\n"
+           "**\n"
+           "**\n"
+           "**\n"
+           "**\n"
+           "**\n"
+           "**\n"
+           "**\n"
+           "**\n"
+           "** $QT_END_LICENSE$\n"
+           "**\n"
+           "****************************************************************************/\n"
+           "\n"
+           "#ifndef FRAGMENTPROGRAMS_P_H\n"
+           "#define FRAGMENTPROGRAMS_P_H\n"
+           "\n"
+           "//\n"
+           "//  W A R N I N G\n"
+           "//  -------------\n"
+           "//\n"
+           "// This file is not part of the Qt API.  It exists purely as an\n"
+           "// implementation detail.  This header file may change from version to\n"
+           "// version without notice, or even be removed.\n"
+           "//\n"
+           "// We mean it.\n"
+           "//\n"
+           "\n";
+
+    writeVariablesEnum(out, "FragmentVariable", variables);
+    writeTypesEnum(out, "FragmentBrushType", brushes);
+    writeTypesEnum(out, "FragmentCompositionModeType", compositionModes);
+    writeTypesEnum(out, "FragmentMaskType", masks);
+
+    out << "static const unsigned int num_fragment_variables = " << variables.size() << ";\n\n";
+    out << "static const unsigned int num_fragment_brushes = " << brushes.size() << ";\n";
+    out << "static const unsigned int num_fragment_composition_modes = " << compositionModes.size() << ";\n";
+    out << "static const unsigned int num_fragment_masks = " << masks.size() << ";\n\n";
+
+    foreach (QStringPair mask, masks) {
+        const QString compiledSource = compiled[mask.first]["MASK__"];
+
+        out << "static const char *FragmentProgram_" << mask.first << " =\n"
+            << trimmed(compiledSource)
+            << '\n';
+    }
+
+    foreach (QStringPair brush, brushes) {
+        foreach (QStringPair mode, compositionModes) {
+            const QString compiledSource = compiled[brush.first][mode.first];
+
+            out << "static const char *FragmentProgram_" << brush.first << '_' << mode.first << " =\n"
+                << trimmed(compiledSource)
+                << '\n';
+        }
+    }
+
+    out << "static const char *mask_fragment_program_sources[num_fragment_masks] = {\n";
+    foreach (QStringPair mask, masks)
+        out << tab << "FragmentProgram_" << mask.first << ",\n";
+    out << "};\n\n";
+
+    out << "static const char *painter_fragment_program_sources[num_fragment_brushes][num_fragment_composition_modes] = {\n";
+    foreach (QStringPair brush, brushes) {
+        out << tab << "{\n";
+
+        foreach (QStringPair mode, compositionModes)
+            out << tab << tab << "FragmentProgram_" << brush.first << '_' << mode.first << ",\n";
+
+        out << tab << "},\n";
+    }
+    out << "};\n\n";
+
+    out << "static int painter_variable_locations[num_fragment_brushes][num_fragment_composition_modes][num_fragment_variables] = {\n";
+    foreach (QStringPair brush, brushes) {
+        out << tab << "{\n";
+
+        foreach (QStringPair mode, compositionModes) {
+            out << tab << tab << "{ ";
+
+            QList<int> locations = getLocations(variables, compiled[brush.first][mode.first]);
+
+            foreach (int location, locations)
+                out << location << ", ";
+
+            out << "},\n";
+        }
+
+        out << tab << "},\n";
+    }
+    out << "};\n\n";
+
+    out << "static int mask_variable_locations[num_fragment_masks][num_fragment_variables] = {\n";
+    foreach (QStringPair mask, masks) {
+        out << tab << "{ ";
+
+        QList<int> locations = getLocations(variables, compiled[mask.first]["MASK__"]);
+
+        foreach (int location, locations)
+            out << location << ", ";
+
+        out << "},\n";
+    }
+    out << "};\n\n";
+    out << "#endif\n";
+}
+
+QList<QString> getVariables(QString program)
+{
+    QList<QString> result;
+
+    QTextStream in(&program);
+    while (!in.atEnd()) {
+        QString line = in.readLine();
+
+        if (line.startsWith("uniform")) {
+            QString word = getWord(line, 3);
+            result << word.left(word.size() - 1);
+        } else if (line.startsWith("#include")) {
+            QString file = getWord(line, 2);
+            result << getVariables(readSourceFile(file.mid(1, file.size() - 2)));
+        }
+    }
+
+    return result;
+}
+
+int main()
+{
+    QList<QStringPair> brushes = readConf(QLatin1String("brushes.conf"));
+    QList<QStringPair> compositionModes = readConf(QLatin1String("composition_modes.conf"));
+    QList<QStringPair> masks = readConf(QLatin1String("masks.conf"));
+
+    QString painterSource = readSourceFile("painter.glsl");
+    QString painterNoMaskSource = readSourceFile("painter_nomask.glsl");
+    QString fastPainterSource = readSourceFile("fast_painter.glsl");
+    QString brushPainterSource = readSourceFile("brush_painter.glsl");
+
+    QSet<QString> variables;
+
+    QList<QStringPair> programs[3] = { brushes, compositionModes, masks };
+
+    for (int i = 0; i < 3; ++i)
+        foreach (QStringPair value, programs[i])
+            variables += QSet<QString>::fromList(getVariables(value.second));
+
+    variables += QSet<QString>::fromList(getVariables(painterSource));
+    variables += QSet<QString>::fromList(getVariables(fastPainterSource));
+
+    QMap<QString, QMap<QString, QString> > compiled;
+
+    foreach (QStringPair brush, brushes) {
+        foreach (QStringPair mode, compositionModes) {
+            QString combinedSource = brush.second + mode.second + painterSource;
+            compiled[brush.first][mode.first] = compileSource(combinedSource);
+
+            combinedSource = brush.second + mode.second + painterNoMaskSource;
+            compiled[brush.first][mode.first + "_NOMASK"] = compileSource(combinedSource);
+        }
+
+        QString fastSource = brush.second + fastPainterSource;
+        QString brushSource = brush.second + brushPainterSource;
+
+        compiled[brush.first]["COMPOSITION_MODE_BLEND_MODE_MASK"] = compileSource(fastSource);
+        compiled[brush.first]["COMPOSITION_MODE_BLEND_MODE_NOMASK"] = compileSource(brushSource);
+    }
+
+    QList<QStringPair> temp;
+
+    foreach (QStringPair mode, compositionModes)
+        temp << QStringPair(mode.first + "_NOMASK", mode.second);
+
+    compositionModes += temp;
+
+    compositionModes << QStringPair("COMPOSITION_MODE_BLEND_MODE_MASK", "")
+                     << QStringPair("COMPOSITION_MODE_BLEND_MODE_NOMASK", "");
+
+    foreach (QStringPair mask, masks)
+        compiled[mask.first]["MASK__"] = compileSource(mask.second);
+
+    writeIncludeFile(variables, brushes, compositionModes, masks, compiled);
+
+    return 0;
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/util/generator.pro b/src/opengl/util/generator.pro
new file mode 100644
index 0000000000..ac71934ecf
--- /dev/null
+++ b/src/opengl/util/generator.pro
@@ -0,0 +1,13 @@
+######################################################################
+# Automatically generated by qmake (2.01a) Thu Oct 19 11:03:24 2006
+######################################################################
+
+TEMPLATE = app
+TARGET = generator
+DEPENDPATH += .
+INCLUDEPATH += .
+
+# Input
+SOURCES += generator.cpp
+
+CONFIG += console
diff --git a/src/opengl/util/glsl_to_include.sh b/src/opengl/util/glsl_to_include.sh
new file mode 100755
index 0000000000..06ba7ffe30
--- /dev/null
+++ b/src/opengl/util/glsl_to_include.sh
@@ -0,0 +1,73 @@
+#! /bin/sh
+#############################################################################
+##
+## Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+## All rights reserved.
+## Contact: Nokia Corporation (qt-info@nokia.com)
+##
+## This file is the build configuration utility of the Qt Toolkit.
+##
+## $QT_BEGIN_LICENSE:LGPL$
+## No Commercial Usage
+## This file contains pre-release code and may not be distributed.
+## You may use this file in accordance with the terms and conditions
+## contained in the Technology Preview License Agreement accompanying
+## this package.
+##
+## GNU Lesser General Public License Usage
+## Alternatively, this file may be used under the terms of the GNU Lesser
+## General Public License version 2.1 as published by the Free Software
+## Foundation and appearing in the file LICENSE.LGPL included in the
+## packaging of this file.  Please review the following information to
+## ensure the GNU Lesser General Public License version 2.1 requirements
+## will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+##
+## In addition, as a special exception, Nokia gives you certain additional
+## rights.  These rights are described in the Nokia Qt LGPL Exception
+## version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+##
+## If you have questions regarding the use of this file, please contact
+## Nokia at qt-info@nokia.com.
+##
+##
+##
+##
+##
+##
+##
+##
+## $QT_END_LICENSE$
+##
+#############################################################################
+
+# Compile a .glsl file to a file that can be included in a C++ program
+USAGE="Usage: $0 <file.glsl>"
+CGC=cgc
+CGC_PROFILE=arbfp1
+
+if test $# -ne 1
+then
+    echo $USAGE
+    exit 1
+fi
+
+GLSL_FILE=$1
+FRAG_FILE=`basename $1 .glsl`.frag
+#GLSL_INC_FILE=`basename $1 .glsl`.glsl_quoted
+
+echo "// Generated by src/opengl/util/$0 from $1" > $FRAG_FILE
+$CGC -quiet -oglsl -profile $CGC_PROFILE $GLSL_FILE | while read line
+do
+   if test `echo $line | cut -c1` != "#"
+   then
+      echo -e \"$line\" >> $FRAG_FILE
+   fi
+done
+echo "; // Generated by src/opengl/util/$0 from $1" >> $FRAG_FILE
+
+#echo "// Generated by src/opengl/util/$0 from $1" > $GLSL_INC_FILE
+#cat $GLSL_FILE | while read line
+#do
+#      printf \"%s\\\\n\"\\n "$line" >> $GLSL_INC_FILE
+#done
+#echo "; // Generated by src/opengl/util/$0 from $1" >> $GLSL_INC_FILE
diff --git a/src/opengl/util/linear_brush.glsl b/src/opengl/util/linear_brush.glsl
new file mode 100644
index 0000000000..90a4440a99
--- /dev/null
+++ b/src/opengl/util/linear_brush.glsl
@@ -0,0 +1,22 @@
+uniform sampler1D palette;
+uniform vec3 linear;
+uniform vec3 inv_matrix_m0;
+uniform vec3 inv_matrix_m1;
+uniform vec3 inv_matrix_m2;
+
+vec4 brush()
+{
+    mat3 mat;
+
+    mat[0] = inv_matrix_m0;
+    mat[1] = inv_matrix_m1;
+    mat[2] = inv_matrix_m2;
+
+    vec3 hcoords = mat * vec3(gl_FragCoord.xy, 1);
+    vec2 A = hcoords.xy / hcoords.z;
+
+    float val = dot(linear.xy, A) * linear.z;
+
+    return texture1D(palette, val);
+}
+
diff --git a/src/opengl/util/masks.conf b/src/opengl/util/masks.conf
new file mode 100644
index 0000000000..d853d0b6e9
--- /dev/null
+++ b/src/opengl/util/masks.conf
@@ -0,0 +1,2 @@
+FRAGMENT_PROGRAM_MASK_TRAPEZOID_AA trap_exact_aa.glsl
+FRAGMENT_PROGRAM_MASK_ELLIPSE_AA ellipse_aa.glsl
diff --git a/src/opengl/util/meego/main.cpp b/src/opengl/util/meego/main.cpp
new file mode 100644
index 0000000000..65d6e57c67
--- /dev/null
+++ b/src/opengl/util/meego/main.cpp
@@ -0,0 +1,89 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtCore/qdebug.h>
+
+#define QT_DEBUG_SHADER_CACHE
+#define QT_MEEGO_EXPERIMENTAL_SHADERCACHE
+#define QT_OPENGL_ES_2
+#define QT_BOOTSTRAPPED
+
+typedef int GLsizei;
+typedef unsigned int GLenum;
+
+#include "../../gl2paintengineex/qglshadercache_meego_p.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+
+int main()
+{
+    ShaderCacheSharedMemory shm;
+
+    if (!shm.isAttached()) {
+        fprintf(stderr, "Unable to attach to shared memory\n");
+        return EXIT_FAILURE;
+    }
+
+    ShaderCacheLocker locker(&shm);
+    if (!locker.isLocked()) {
+        fprintf(stderr, "Unable to lock shared memory\n");
+        return EXIT_FAILURE;
+    }
+
+    void *data = shm.data();
+    Q_ASSERT(data);
+
+    CachedShaders *cache = reinterpret_cast<CachedShaders *>(data);
+
+    for (int i = 0; i < cache->shaderCount; ++i) {
+        printf("Shader %d: %d bytes\n", i, cache->headers[i].size);
+    }
+
+    printf("\nSummary:\n\n"
+           "    Amount of cached shaders: %d\n"
+           "                  Bytes used: %d\n"
+           "             Bytes available: %d\n",
+           cache->shaderCount, cache->dataSize, cache->availableSize());
+
+    return EXIT_SUCCESS;
+}
+
diff --git a/src/opengl/util/meego/shader-cache-introspector.pro b/src/opengl/util/meego/shader-cache-introspector.pro
new file mode 100644
index 0000000000..520e9a5108
--- /dev/null
+++ b/src/opengl/util/meego/shader-cache-introspector.pro
@@ -0,0 +1,7 @@
+TEMPLATE = app
+
+SOURCES += main.cpp
+
+TARGET = shader-cache-introspector
+
+QT = core
diff --git a/src/opengl/util/painter.glsl b/src/opengl/util/painter.glsl
new file mode 100644
index 0000000000..b990234778
--- /dev/null
+++ b/src/opengl/util/painter.glsl
@@ -0,0 +1,21 @@
+uniform sampler2D dst_texture;
+uniform sampler2D mask_texture;
+uniform vec2 inv_mask_size;
+uniform vec2 inv_dst_size;
+uniform vec2 mask_offset;
+uniform vec4 mask_channel;
+
+float mask()
+{
+    return dot(mask_channel, texture2D(mask_texture, (gl_FragCoord.xy + mask_offset) * inv_mask_size));
+}
+
+void main()
+{
+    vec4 dst = texture2D(dst_texture, gl_FragCoord.xy * inv_dst_size);
+
+    // combine clip and coverage channels
+    float mask_alpha = mask();
+
+    gl_FragColor = mix(dst, composite(brush(), dst), mask_alpha);
+}
diff --git a/src/opengl/util/painter_nomask.glsl b/src/opengl/util/painter_nomask.glsl
new file mode 100644
index 0000000000..af5ad6505f
--- /dev/null
+++ b/src/opengl/util/painter_nomask.glsl
@@ -0,0 +1,9 @@
+uniform sampler2D dst_texture;
+uniform vec2 inv_dst_size;
+
+void main()
+{
+    vec4 dst = texture2D(dst_texture, gl_FragCoord.xy * inv_dst_size);
+
+    gl_FragColor = composite(brush(), dst);
+}
diff --git a/src/opengl/util/pattern_brush.glsl b/src/opengl/util/pattern_brush.glsl
new file mode 100644
index 0000000000..31702b887c
--- /dev/null
+++ b/src/opengl/util/pattern_brush.glsl
@@ -0,0 +1,23 @@
+uniform sampler2D brush_texture;
+uniform vec2 inv_brush_texture_size;
+uniform vec3 inv_matrix_m0;
+uniform vec3 inv_matrix_m1;
+uniform vec3 inv_matrix_m2;
+
+vec4 brush()
+{
+    mat3 mat;
+
+    mat[0] = inv_matrix_m0;
+    mat[1] = inv_matrix_m1;
+    mat[2] = inv_matrix_m2;
+
+    vec3 hcoords = mat * vec3(gl_FragCoord.xy, 1);
+    vec2 coords = hcoords.xy / hcoords.z;
+
+    coords *= inv_brush_texture_size;
+
+    float alpha = 1.0 - texture2D(brush_texture, coords).r;
+
+    return gl_Color * alpha;
+}
diff --git a/src/opengl/util/radial_brush.glsl b/src/opengl/util/radial_brush.glsl
new file mode 100644
index 0000000000..84bec62e65
--- /dev/null
+++ b/src/opengl/util/radial_brush.glsl
@@ -0,0 +1,28 @@
+uniform sampler1D palette;
+uniform vec2 fmp;
+uniform float fmp2_m_radius2;
+uniform vec3 inv_matrix_m0;
+uniform vec3 inv_matrix_m1;
+uniform vec3 inv_matrix_m2;
+
+vec4 brush()
+{
+    mat3 mat;
+
+    mat[0] = inv_matrix_m0;
+    mat[1] = inv_matrix_m1;
+    mat[2] = inv_matrix_m2;
+
+    vec3 hcoords = mat * vec3(gl_FragCoord.xy, 1);
+    vec2 A = hcoords.xy / hcoords.z;
+    vec2 B = fmp;
+
+    float a = fmp2_m_radius2;
+    float b = 2.0*dot(A, B);
+    float c = -dot(A, A);
+
+    float val = (-b + sqrt(b*b - 4.0*a*c)) / (2.0*a);
+
+    return texture1D(palette, val);
+}
+
diff --git a/src/opengl/util/simple_porter_duff.glsl b/src/opengl/util/simple_porter_duff.glsl
new file mode 100644
index 0000000000..4cb0599ac5
--- /dev/null
+++ b/src/opengl/util/simple_porter_duff.glsl
@@ -0,0 +1,16 @@
+uniform vec2 porterduff_ab;
+uniform vec3 porterduff_xyz;
+
+vec4 composite(vec4 src, vec4 dst)
+{
+    vec4 result;
+
+    result.xyz = porterduff_ab.x * src.xyz * dst.a
+               + porterduff_ab.y * dst.xyz * src.a
+               + porterduff_xyz.y * src.xyz * (1.0 - dst.a)
+               + porterduff_xyz.z * dst.xyz * (1.0 - src.a);
+
+    result.a = dot(porterduff_xyz, vec3(src.a * dst.a, src.a * (1.0 - dst.a), dst.a * (1.0 - src.a)));
+
+    return result;
+}
diff --git a/src/opengl/util/solid_brush.glsl b/src/opengl/util/solid_brush.glsl
new file mode 100644
index 0000000000..760afd1a72
--- /dev/null
+++ b/src/opengl/util/solid_brush.glsl
@@ -0,0 +1,4 @@
+vec4 brush()
+{
+    return gl_Color;
+}
diff --git a/src/opengl/util/texture_brush.glsl b/src/opengl/util/texture_brush.glsl
new file mode 100644
index 0000000000..949825583f
--- /dev/null
+++ b/src/opengl/util/texture_brush.glsl
@@ -0,0 +1,21 @@
+uniform sampler2D brush_texture;
+uniform vec2 inv_brush_texture_size;
+uniform vec3 inv_matrix_m0;
+uniform vec3 inv_matrix_m1;
+uniform vec3 inv_matrix_m2;
+
+vec4 brush()
+{
+    mat3 mat;
+
+    mat[0] = inv_matrix_m0;
+    mat[1] = inv_matrix_m1;
+    mat[2] = inv_matrix_m2;
+
+    vec3 hcoords = mat * vec3(gl_FragCoord.xy, 1);
+    vec2 coords = hcoords.xy / hcoords.z;
+
+    coords *= inv_brush_texture_size;
+
+    return texture2D(brush_texture, coords);
+}
diff --git a/src/opengl/util/trap_exact_aa.glsl b/src/opengl/util/trap_exact_aa.glsl
new file mode 100644
index 0000000000..1637f430b5
--- /dev/null
+++ b/src/opengl/util/trap_exact_aa.glsl
@@ -0,0 +1,58 @@
+float quad_aa()
+{
+    float top = min(gl_FragCoord.y + 0.5, gl_TexCoord[0].x);
+    float bottom = max(gl_FragCoord.y - 0.5, gl_TexCoord[0].y);
+
+    float area = top - bottom;
+
+    float left = gl_FragCoord.x - 0.5;
+    float right = gl_FragCoord.x + 0.5;
+
+    // use line equations to compute intersections of left/right edges with top/bottom of truncated pixel
+    vec4 vecX = gl_TexCoord[1].xxzz * vec2(top, bottom).xyxy + gl_TexCoord[1].yyww;
+
+    vec2 invA = gl_TexCoord[0].zw;
+
+    // transform right line to left to be able to use same calculations for both
+    vecX.zw = 2.0 * gl_FragCoord.x - vecX.zw;
+
+    vec2 topX = vec2(vecX.x, vecX.z);
+    vec2 bottomX = vec2(vecX.y, vecX.w);
+
+    // transform lines such that top intersection is to the right of bottom intersection
+    vec2 topXTemp = max(topX, bottomX);
+    vec2 bottomXTemp = min(topX, bottomX);
+
+    // make sure line slope reflects mirrored lines
+    invA = mix(invA, -invA, step(topX, bottomX));
+
+    vec2 vecLeftRight = vec2(left, right);
+
+    // compute the intersections of the lines with the left and right edges of the pixel
+    vec4 intersectY = bottom + (vecLeftRight.xyxy - bottomXTemp.xxyy) * invA.xxyy;
+
+    vec2 temp = mix(area - 0.5 * (right - bottomXTemp) * (intersectY.yw - bottom), // left < bottom < right < top
+                    (0.5 * (topXTemp + bottomXTemp) - left) * area,    // left < bottom < top < right
+                    step(topXTemp, right.xx));
+
+    vec2 excluded = 0.5 * (top - intersectY.xz) * (topXTemp - left); // bottom < left < top < right
+
+    excluded = mix((top - 0.5 * (intersectY.yw + intersectY.xz)) * (right - left), // bottom < left < right < top
+                   excluded, step(topXTemp, right.xx));
+
+    excluded = mix(temp, // left < bottom < right (see calculation of temp)
+                   excluded, step(bottomXTemp, left.xx));
+
+    excluded = mix(vec2(area, area), // right < bottom < top
+                   excluded, step(bottomXTemp, right.xx));
+
+    excluded *= step(left, topXTemp);
+
+    return (area - excluded.x - excluded.y) * step(bottom, top);
+}
+
+void main()
+{
+    gl_FragColor = quad_aa().xxxx;
+}
+