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diff --git a/demos/boxes/main.cpp b/demos/boxes/main.cpp
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-/****************************************************************************
-**
-** 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 demonstration applications 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 <GL/glew.h>
-#include "glextensions.h"
-
-#include "scene.h"
-
-#include <QtGui>
-#include <QGLWidget>
-
-class GraphicsView : public QGraphicsView
-{
-public:
- GraphicsView()
- {
- setWindowTitle(tr("Boxes"));
- setRenderHints(QPainter::Antialiasing | QPainter::SmoothPixmapTransform);
- //setRenderHints(QPainter::SmoothPixmapTransform);
- }
-
-protected:
- void resizeEvent(QResizeEvent *event) {
- if (scene())
- scene()->setSceneRect(QRect(QPoint(0, 0), event->size()));
- QGraphicsView::resizeEvent(event);
- }
-};
-
-inline bool matchString(const char *extensionString, const char *subString)
-{
- int subStringLength = strlen(subString);
- return (strncmp(extensionString, subString, subStringLength) == 0)
- && ((extensionString[subStringLength] == ' ') || (extensionString[subStringLength] == '\0'));
-}
-
-bool necessaryExtensionsSupported()
-{
- const char *extensionString = reinterpret_cast<const char *>(glGetString(GL_EXTENSIONS));
- const char *p = extensionString;
-
- const int GL_EXT_FBO = 1;
- const int GL_ARB_VS = 2;
- const int GL_ARB_FS = 4;
- const int GL_ARB_SO = 8;
- int extensions = 0;
-
- while (*p) {
- if (matchString(p, "GL_EXT_framebuffer_object"))
- extensions |= GL_EXT_FBO;
- else if (matchString(p, "GL_ARB_vertex_shader"))
- extensions |= GL_ARB_VS;
- else if (matchString(p, "GL_ARB_fragment_shader"))
- extensions |= GL_ARB_FS;
- else if (matchString(p, "GL_ARB_shader_objects"))
- extensions |= GL_ARB_SO;
- while ((*p != ' ') && (*p != '\0'))
- ++p;
- if (*p == ' ')
- ++p;
- }
- return (extensions == 15);
-}
-
-int main(int argc, char **argv)
-{
- QApplication app(argc, argv);
-
- if ((QGLFormat::openGLVersionFlags() & QGLFormat::OpenGL_Version_1_5) == 0) {
- QMessageBox::critical(0, "OpenGL features missing",
- "OpenGL version 1.5 or higher is required to run this demo.\n"
- "The program will now exit.");
- return -1;
- }
-
- int maxTextureSize = 1024;
- QGLWidget *widget = new QGLWidget(QGLFormat(QGL::SampleBuffers));
- widget->makeCurrent();
-
- if (!necessaryExtensionsSupported()) {
- QMessageBox::critical(0, "OpenGL features missing",
- "The OpenGL extensions required to run this demo are missing.\n"
- "The program will now exit.");
- delete widget;
- return -2;
- }
-
- // Check if all the necessary functions are resolved.
- if (!getGLExtensionFunctions().resolve(widget->context())) {
- QMessageBox::critical(0, "OpenGL features missing",
- "Failed to resolve OpenGL functions required to run this demo.\n"
- "The program will now exit.");
- delete widget;
- return -3;
- }
-
- // TODO: Make conditional for final release
- QMessageBox::information(0, "For your information",
- "This demo can be GPU and CPU intensive and may\n"
- "work poorly or not at all on your system.");
-
- widget->makeCurrent(); // The current context must be set before calling Scene's constructor
- Scene scene(1024, 768, maxTextureSize);
- GraphicsView view;
- view.setViewport(widget);
- view.setViewportUpdateMode(QGraphicsView::FullViewportUpdate);
- view.setScene(&scene);
- view.show();
-
- return app.exec();
-}
-