6 files changed, 654 insertions, 0 deletions
diff --git a/examples/opengl/overpainting/bubble.cpp b/examples/opengl/overpainting/bubble.cpp
new file mode 100644
index 00000000000..eb315057fa0
--- /dev/null
+++ b/examples/opengl/overpainting/bubble.cpp
@@ -0,0 +1,112 @@
+/****************************************************************************
+**
+** 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 examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
+**     the names of its contributors may be used to endorse or promote
+**     products derived from this software without specific prior written
+**     permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+
+#include "bubble.h"
+
+Bubble::Bubble(const QPointF &position, qreal radius, const QPointF &velocity)
+    : position(position), vel(velocity), radius(radius)
+{
+    innerColor = randomColor();
+    outerColor = randomColor();
+    updateBrush();
+}
+
+void Bubble::updateBrush()
+{
+    QRadialGradient gradient(QPointF(radius, radius), radius,
+                             QPointF(radius*0.5, radius*0.5));
+
+    gradient.setColorAt(0, QColor(255, 255, 255, 255));
+    gradient.setColorAt(0.25, innerColor);
+    gradient.setColorAt(1, outerColor);
+    brush = QBrush(gradient);
+}
+
+void Bubble::drawBubble(QPainter *painter)
+{
+    painter->save();
+    painter->translate(position.x() - radius, position.y() - radius);
+    painter->setBrush(brush);
+    painter->drawEllipse(0, 0, int(2*radius), int(2*radius));
+    painter->restore();
+}
+
+QColor Bubble::randomColor()
+{
+    int red = int(205 + 50.0*qrand()/(RAND_MAX+1.0));
+    int green = int(205 + 50.0*qrand()/(RAND_MAX+1.0));
+    int blue = int(205 + 50.0*qrand()/(RAND_MAX+1.0));
+    int alpha = int(91 + 100.0*qrand()/(RAND_MAX+1.0));
+
+    return QColor(red, green, blue, alpha);
+}
+
+void Bubble::move(const QRect &bbox)
+{
+    position += vel;
+    qreal leftOverflow = position.x() - radius - bbox.left();
+    qreal rightOverflow = position.x() + radius - bbox.right();
+    qreal topOverflow = position.y() - radius - bbox.top();
+    qreal bottomOverflow = position.y() + radius - bbox.bottom();
+    
+    if (leftOverflow < 0.0) {
+        position.setX(position.x() - 2 * leftOverflow);
+        vel.setX(-vel.x());
+    } else if (rightOverflow > 0.0) {
+        position.setX(position.x() - 2 * rightOverflow);
+        vel.setX(-vel.x());
+    }
+
+    if (topOverflow < 0.0) {
+        position.setY(position.y() - 2 * topOverflow);
+        vel.setY(-vel.y());
+    } else if (bottomOverflow > 0.0) {
+        position.setY(position.y() - 2 * bottomOverflow);
+        vel.setY(-vel.y());
+    }
+}
+
+QRectF Bubble::rect()
+{
+    return QRectF(position.x() - radius, position.y() - radius,
+                  2 * radius, 2 * radius);
+}
diff --git a/examples/opengl/overpainting/bubble.h b/examples/opengl/overpainting/bubble.h
new file mode 100644
index 00000000000..025e92bc00b
--- /dev/null
+++ b/examples/opengl/overpainting/bubble.h
@@ -0,0 +1,75 @@
+/****************************************************************************
+**
+** 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 examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
+**     the names of its contributors may be used to endorse or promote
+**     products derived from this software without specific prior written
+**     permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef BUBBLE_H
+#define BUBBLE_H
+
+#include <QBrush>
+#include <QColor>
+#include <QPointF>
+#include <QRect>
+#include <QRectF>
+
+QT_BEGIN_NAMESPACE
+class QPainter;
+QT_END_NAMESPACE
+
+class Bubble
+{
+public:
+    Bubble(const QPointF &position, qreal radius, const QPointF &velocity);
+
+    void drawBubble(QPainter *painter);
+    void updateBrush();
+    void move(const QRect &bbox);
+    QRectF rect();
+
+private:
+    QColor randomColor();
+
+    QBrush brush;
+    QPointF position;
+    QPointF vel;
+    qreal radius;
+    QColor innerColor;
+    QColor outerColor;
+};
+
+#endif
diff --git a/examples/opengl/overpainting/glwidget.cpp b/examples/opengl/overpainting/glwidget.cpp
new file mode 100644
index 00000000000..ded7bf1cf5f
--- /dev/null
+++ b/examples/opengl/overpainting/glwidget.cpp
@@ -0,0 +1,283 @@
+/****************************************************************************
+**
+** 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 examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
+**     the names of its contributors may be used to endorse or promote
+**     products derived from this software without specific prior written
+**     permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+#include <QtOpenGL>
+#include <stdlib.h>
+
+#include <math.h>
+
+#include "bubble.h"
+#include "qtlogo.h"
+#include "glwidget.h"
+
+#ifndef GL_MULTISAMPLE
+#define GL_MULTISAMPLE  0x809D
+#endif
+
+//! [0]
+GLWidget::GLWidget(QWidget *parent)
+    : QGLWidget(QGLFormat(QGL::SampleBuffers), parent)
+{
+    QTime midnight(0, 0, 0);
+    qsrand(midnight.secsTo(QTime::currentTime()));
+
+    logo = 0;
+    xRot = 0;
+    yRot = 0;
+    zRot = 0;
+
+    qtGreen = QColor::fromCmykF(0.40, 0.0, 1.0, 0.0);
+    qtPurple = QColor::fromCmykF(0.39, 0.39, 0.0, 0.0);
+
+    animationTimer.setSingleShot(false);
+    connect(&animationTimer, SIGNAL(timeout()), this, SLOT(animate()));
+    animationTimer.start(25);
+
+    setAutoFillBackground(false);
+    setMinimumSize(200, 200);
+    setWindowTitle(tr("Overpainting a Scene"));
+}
+//! [0]
+
+//! [1]
+GLWidget::~GLWidget()
+{
+}
+//! [1]
+
+static void qNormalizeAngle(int &angle)
+{
+    while (angle < 0)
+        angle += 360 * 16;
+    while (angle > 360 * 16)
+        angle -= 360 * 16;
+}
+
+void GLWidget::setXRotation(int angle)
+{
+    qNormalizeAngle(angle);
+    if (angle != xRot)
+        xRot = angle;
+}
+
+void GLWidget::setYRotation(int angle)
+{
+    qNormalizeAngle(angle);
+    if (angle != yRot)
+        yRot = angle;
+}
+
+void GLWidget::setZRotation(int angle)
+{
+    qNormalizeAngle(angle);
+    if (angle != zRot)
+        zRot = angle;
+}
+
+//! [2]
+void GLWidget::initializeGL()
+{
+    glEnable(GL_MULTISAMPLE);
+
+    logo = new QtLogo(this);
+    logo->setColor(qtGreen.dark());
+}
+//! [2]
+
+void GLWidget::mousePressEvent(QMouseEvent *event)
+{
+    lastPos = event->pos();
+}
+
+void GLWidget::mouseMoveEvent(QMouseEvent *event)
+{
+    int dx = event->x() - lastPos.x();
+    int dy = event->y() - lastPos.y();
+
+    if (event->buttons() & Qt::LeftButton) {
+        setXRotation(xRot + 8 * dy);
+        setYRotation(yRot + 8 * dx);
+    } else if (event->buttons() & Qt::RightButton) {
+        setXRotation(xRot + 8 * dy);
+        setZRotation(zRot + 8 * dx);
+    }
+    lastPos = event->pos();
+}
+
+void GLWidget::paintEvent(QPaintEvent *event)
+{
+    makeCurrent();
+//! [4]
+    glMatrixMode(GL_MODELVIEW);
+    glPushMatrix();
+//! [4]
+
+//! [6]
+    qglClearColor(qtPurple.dark());
+    glShadeModel(GL_SMOOTH);
+    glEnable(GL_DEPTH_TEST);
+    glEnable(GL_CULL_FACE);
+    glEnable(GL_LIGHTING);
+    glEnable(GL_LIGHT0);
+    glEnable(GL_MULTISAMPLE);
+    static GLfloat lightPosition[4] = { 0.5, 5.0, 7.0, 1.0 };
+    glLightfv(GL_LIGHT0, GL_POSITION, lightPosition);
+
+    setupViewport(width(), height());
+//! [6]
+
+//! [7]
+    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+    glLoadIdentity();
+    glTranslatef(0.0, 0.0, -10.0);
+    glRotatef(xRot / 16.0, 1.0, 0.0, 0.0);
+    glRotatef(yRot / 16.0, 0.0, 1.0, 0.0);
+    glRotatef(zRot / 16.0, 0.0, 0.0, 1.0);
+
+    logo->draw();
+//! [7]
+
+//! [8]
+    glShadeModel(GL_FLAT);
+    glDisable(GL_CULL_FACE);
+    glDisable(GL_DEPTH_TEST);
+    glDisable(GL_LIGHTING);
+
+    glMatrixMode(GL_MODELVIEW);
+    glPopMatrix();
+//! [8]
+
+//! [10]
+    QPainter painter(this);
+    painter.setRenderHint(QPainter::Antialiasing);
+    foreach (Bubble *bubble, bubbles) {
+        if (bubble->rect().intersects(event->rect()))
+            bubble->drawBubble(&painter);
+    }
+    drawInstructions(&painter);
+    painter.end();
+}
+//! [10]
+
+//! [11]
+void GLWidget::resizeGL(int width, int height)
+{
+    setupViewport(width, height);
+}
+//! [11]
+
+//! [12]
+void GLWidget::showEvent(QShowEvent *event)
+{
+    Q_UNUSED(event);
+    createBubbles(20 - bubbles.count());
+}
+//! [12]
+
+QSize GLWidget::sizeHint() const
+{
+    return QSize(400, 400);
+}
+
+void GLWidget::createBubbles(int number)
+{
+    for (int i = 0; i < number; ++i) {
+        QPointF position(width()*(0.1 + (0.8*qrand()/(RAND_MAX+1.0))),
+                        height()*(0.1 + (0.8*qrand()/(RAND_MAX+1.0))));
+        qreal radius = qMin(width(), height())*(0.0125 + 0.0875*qrand()/(RAND_MAX+1.0));
+        QPointF velocity(width()*0.0125*(-0.5 + qrand()/(RAND_MAX+1.0)),
+                        height()*0.0125*(-0.5 + qrand()/(RAND_MAX+1.0)));
+
+        bubbles.append(new Bubble(position, radius, velocity));
+    }
+}
+
+//! [13]
+void GLWidget::animate()
+{
+    QMutableListIterator<Bubble*> iter(bubbles);
+
+    while (iter.hasNext()) {
+        Bubble *bubble = iter.next();
+        bubble->move(rect());
+    }
+    update();
+}
+//! [13]
+
+//! [14]
+void GLWidget::setupViewport(int width, int height)
+{
+    int side = qMin(width, height);
+    glViewport((width - side) / 2, (height - side) / 2, side, side);
+
+    glMatrixMode(GL_PROJECTION);
+    glLoadIdentity();
+#ifdef QT_OPENGL_ES
+    glOrthof(-0.5, +0.5, -0.5, 0.5, 4.0, 15.0);
+#else
+    glOrtho(-0.5, +0.5, -0.5, 0.5, 4.0, 15.0);
+#endif
+    glMatrixMode(GL_MODELVIEW);
+}
+//! [14]
+
+//! [15]
+void GLWidget::drawInstructions(QPainter *painter)
+{
+    QString text = tr("Click and drag with the left mouse button "
+                      "to rotate the Qt logo.");
+    QFontMetrics metrics = QFontMetrics(font());
+    int border = qMax(4, metrics.leading());
+
+    QRect rect = metrics.boundingRect(0, 0, width() - 2*border, int(height()*0.125),
+                                      Qt::AlignCenter | Qt::TextWordWrap, text);
+    painter->setRenderHint(QPainter::TextAntialiasing);
+    painter->fillRect(QRect(0, 0, width(), rect.height() + 2*border),
+                     QColor(0, 0, 0, 127));
+    painter->setPen(Qt::white);
+    painter->fillRect(QRect(0, 0, width(), rect.height() + 2*border),
+                      QColor(0, 0, 0, 127));
+    painter->drawText((width() - rect.width())/2, border,
+                      rect.width(), rect.height(),
+                      Qt::AlignCenter | Qt::TextWordWrap, text);
+}
+//! [15]
diff --git a/examples/opengl/overpainting/glwidget.h b/examples/opengl/overpainting/glwidget.h
new file mode 100644
index 00000000000..178fdf7fe54
--- /dev/null
+++ b/examples/opengl/overpainting/glwidget.h
@@ -0,0 +1,111 @@
+/****************************************************************************
+**
+** 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 examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
+**     the names of its contributors may be used to endorse or promote
+**     products derived from this software without specific prior written
+**     permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef GLWIDGET_H
+#define GLWIDGET_H
+
+#include <QBrush>
+#include <QFont>
+#include <QImage>
+#include <QPen>
+#include <QGLWidget>
+#include <QTimer>
+
+class Bubble;
+class QtLogo;
+QT_BEGIN_NAMESPACE
+class QPaintEvent;
+class QWidget;
+QT_END_NAMESPACE
+
+//! [0]
+class GLWidget : public QGLWidget
+{
+    Q_OBJECT
+
+public:
+    GLWidget(QWidget *parent = 0);
+    ~GLWidget();
+//! [0]
+
+    QSize sizeHint() const;
+    int xRotation() const { return xRot; }
+    int yRotation() const { return yRot; }
+    int zRotation() const { return zRot; }
+
+public slots:
+    void setXRotation(int angle);
+    void setYRotation(int angle);
+    void setZRotation(int angle);
+
+//! [1]
+protected:
+    void initializeGL();
+    void paintEvent(QPaintEvent *event);
+    void resizeGL(int width, int height);
+    void mousePressEvent(QMouseEvent *event);
+    void mouseMoveEvent(QMouseEvent *event);
+    void showEvent(QShowEvent *event);
+
+private slots:
+    void animate();
+
+private:
+    void createBubbles(int number);
+    void drawInstructions(QPainter *painter);
+//! [1]
+    void setupViewport(int width, int height);
+
+    QColor qtGreen;
+    QColor qtPurple;
+
+    GLuint object;
+    int xRot;
+    int yRot;
+    int zRot;
+    QPoint lastPos;
+//! [4]
+    QtLogo *logo;
+    QList<Bubble*> bubbles;
+    QTimer animationTimer;
+//! [4]
+};
+
+#endif
diff --git a/examples/opengl/overpainting/main.cpp b/examples/opengl/overpainting/main.cpp
new file mode 100644
index 00000000000..fd9b206b69d
--- /dev/null
+++ b/examples/opengl/overpainting/main.cpp
@@ -0,0 +1,50 @@
+/****************************************************************************
+**
+** 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 examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
+**     the names of its contributors may be used to endorse or promote
+**     products derived from this software without specific prior written
+**     permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QApplication>
+#include "glwidget.h"
+
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+    GLWidget window;
+    window.show();
+    return app.exec();
+}
diff --git a/examples/opengl/overpainting/overpainting.pro b/examples/opengl/overpainting/overpainting.pro
new file mode 100644
index 00000000000..741199d2105
--- /dev/null
+++ b/examples/opengl/overpainting/overpainting.pro
@@ -0,0 +1,23 @@
+VPATH += ../shared
+INCLUDEPATH += ../shared
+
+QT += opengl
+HEADERS = bubble.h \
+    glwidget.h \
+    qtlogo.h
+SOURCES = bubble.cpp \
+    glwidget.cpp \
+    main.cpp \
+    qtlogo.cpp
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/qtbase/opengl/overpainting
+sources.files = $$SOURCES \
+    $$HEADERS \
+    $$RESOURCES \
+    $$FORMS \
+    overpainting.pro
+sources.path = $$[QT_INSTALL_EXAMPLES]/qtbase/opengl/overpainting
+INSTALLS += target \
+    sources
+symbian:include($$QT_SOURCE_TREE/examples/symbianpkgrules.pri)