Initial import from the monolithic Qt.

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

1 files changed, 394 insertions, 0 deletions

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