--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/opengl/samplebuffers/glwidget.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,165 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 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.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 "glwidget.h"
+#include <math.h>
+
+#ifndef GL_MULTISAMPLE
+#define GL_MULTISAMPLE  0x809D
+#endif
+
+GLWidget::GLWidget(QWidget *parent)
+    : QGLWidget(QGLFormat(QGL::SampleBuffers), parent)
+{
+    startTimer(40);
+    setWindowTitle(tr("Sample Buffers"));
+}
+
+void GLWidget::initializeGL()
+{
+    glMatrixMode(GL_PROJECTION);
+    glLoadIdentity();
+    glOrtho(-.5, .5, .5, -.5, -1000, 1000);
+    glMatrixMode(GL_MODELVIEW);
+    glLoadIdentity();
+    glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
+
+    makeObject();
+}
+
+void GLWidget::resizeGL(int w, int h)
+{
+    glViewport(0, 0, w, h);
+}
+
+void GLWidget::paintGL()
+{
+    static float rot = 0.0;
+    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+    glMatrixMode(GL_MODELVIEW);
+    glPushMatrix();
+    glEnable(GL_MULTISAMPLE);
+    glTranslatef(-0.25f, -0.10f, 0.0f);
+    glScalef(0.75f, 1.15f, 0.0f);
+    glRotatef(rot, 0.0f, 0.f, 1.0f);
+    glCallList(list);
+    glPopMatrix();
+
+    glPushMatrix();
+    glDisable(GL_MULTISAMPLE);
+    glTranslatef(0.25f, -0.10f, 0.0f);
+    glScalef(0.75f, 1.15f, 0.0f);
+    glRotatef(rot, 0.0f, 0.0f, 1.0f);
+    glCallList(list);
+    glPopMatrix();
+
+    rot += 0.2f;
+
+    qglColor(Qt::black);
+    renderText(-0.35, 0.4, 0.0, "Multisampling enabled");
+    renderText(0.15, 0.4, 0.0, "Multisampling disabled");
+}
+
+void GLWidget::timerEvent(QTimerEvent *)
+{
+    update();
+}
+
+void GLWidget::makeObject()
+{
+    QColor qtGreen(QColor::fromCmykF(0.40, 0.0, 1.0, 0.0));
+    const double Pi = 3.14159265358979323846;
+    const int NumSectors = 15;
+    GLdouble x1 = +0.06;
+    GLdouble y1 = -0.14;
+    GLdouble x2 = +0.14;
+    GLdouble y2 = -0.06;
+    GLdouble x3 = +0.08;
+    GLdouble y3 = +0.00;
+    GLdouble x4 = +0.30;
+    GLdouble y4 = +0.22;
+
+    list = glGenLists(1);
+    glNewList(list, GL_COMPILE);
+    {
+        for (int i = 0; i < NumSectors; ++i) {
+            double angle1 = (i * 2 * Pi) / NumSectors;
+            GLdouble x5 = 0.30 * sin(angle1);
+            GLdouble y5 = 0.30 * cos(angle1);
+            GLdouble x6 = 0.20 * sin(angle1);
+            GLdouble y6 = 0.20 * cos(angle1);
+
+            double angle2 = ((i + 1) * 2 * Pi) / NumSectors;
+            GLdouble x7 = 0.20 * sin(angle2);
+            GLdouble y7 = 0.20 * cos(angle2);
+            GLdouble x8 = 0.30 * sin(angle2);
+            GLdouble y8 = 0.30 * cos(angle2);
+
+            qglColor(qtGreen);
+            quad(GL_QUADS, x5, y5, x6, y6, x7, y7, x8, y8);
+            qglColor(Qt::black);
+            quad(GL_LINE_LOOP, x5, y5, x6, y6, x7, y7, x8, y8);
+        }
+
+        qglColor(qtGreen);
+        quad(GL_QUADS, x1, y1, x2, y2, y2, x2, y1, x1);
+        quad(GL_QUADS, x3, y3, x4, y4, y4, x4, y3, x3);
+
+        qglColor(Qt::black);
+        quad(GL_LINE_LOOP, x1, y1, x2, y2, y2, x2, y1, x1);
+        quad(GL_LINE_LOOP, x3, y3, x4, y4, y4, x4, y3, x3);
+    }
+    glEndList();
+}
+
+void GLWidget::quad(GLenum primitive, GLdouble x1, GLdouble y1, GLdouble x2, GLdouble y2,
+                    GLdouble x3, GLdouble y3, GLdouble x4, GLdouble y4)
+{
+    glBegin(primitive);
+    {
+        glVertex2d(x1, y1);
+        glVertex2d(x2, y2);
+        glVertex2d(x3, y3);
+        glVertex2d(x4, y4);
+    }
+    glEnd();
+}