1 files changed, 138 insertions, 0 deletions
diff --git a/src/gui/opengl/qopenglcustomshaderstage.cpp b/src/gui/opengl/qopenglcustomshaderstage.cpp
new file mode 100644
index 0000000000..cbbf318249
--- /dev/null
+++ b/src/gui/opengl/qopenglcustomshaderstage.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 QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qopenglcustomshaderstage_p.h"
+#include "qopenglengineshadermanager_p.h"
+#include "qpaintengineex_opengl2_p.h"
+#include <private/qpainter_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QOpenGLCustomShaderStagePrivate
+{
+public:
+    QOpenGLCustomShaderStagePrivate() :
+        m_manager(0) {}
+
+    QPointer<QOpenGLEngineShaderManager> m_manager;
+    QByteArray              m_source;
+};
+
+
+
+
+QOpenGLCustomShaderStage::QOpenGLCustomShaderStage()
+    : d_ptr(new QOpenGLCustomShaderStagePrivate)
+{
+}
+
+QOpenGLCustomShaderStage::~QOpenGLCustomShaderStage()
+{
+    Q_D(QOpenGLCustomShaderStage);
+    if (d->m_manager) {
+        d->m_manager->removeCustomStage();
+        d->m_manager->sharedShaders->cleanupCustomStage(this);
+    }
+}
+
+void QOpenGLCustomShaderStage::setUniformsDirty()
+{
+    Q_D(QOpenGLCustomShaderStage);
+    if (d->m_manager)
+        d->m_manager->setDirty(); // ### Probably a bit overkill!
+}
+
+bool QOpenGLCustomShaderStage::setOnPainter(QPainter* p)
+{
+    Q_D(QOpenGLCustomShaderStage);
+    if (p->paintEngine()->type() != QPaintEngine::OpenGL2) {
+        qWarning("QOpenGLCustomShaderStage::setOnPainter() - paint engine not OpenGL2");
+        return false;
+    }
+    if (d->m_manager)
+        qWarning("Custom shader is already set on a painter");
+
+    QOpenGL2PaintEngineEx *engine = static_cast<QOpenGL2PaintEngineEx*>(p->paintEngine());
+    d->m_manager = QOpenGL2PaintEngineExPrivate::shaderManagerForEngine(engine);
+    Q_ASSERT(d->m_manager);
+
+    d->m_manager->setCustomStage(this);
+    return true;
+}
+
+void QOpenGLCustomShaderStage::removeFromPainter(QPainter* p)
+{
+    Q_D(QOpenGLCustomShaderStage);
+    if (p->paintEngine()->type() != QPaintEngine::OpenGL2)
+        return;
+
+    QOpenGL2PaintEngineEx *engine = static_cast<QOpenGL2PaintEngineEx*>(p->paintEngine());
+    d->m_manager = QOpenGL2PaintEngineExPrivate::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 QOpenGLCustomShaderStage::source() const
+{
+    Q_D(const QOpenGLCustomShaderStage);
+    return d->m_source;
+}
+
+// Called by the shader manager if another custom shader is attached or
+// the manager is deleted
+void QOpenGLCustomShaderStage::setInactive()
+{
+    Q_D(QOpenGLCustomShaderStage);
+    d->m_manager = 0;
+}
+
+void QOpenGLCustomShaderStage::setSource(const QByteArray& s)
+{
+    Q_D(QOpenGLCustomShaderStage);
+    d->m_source = s;
+}
+
+QT_END_NAMESPACE