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50
51#include <QApplication>
52#include <QMainWindow>
53#include <QSurfaceFormat>
54#include <QCommandLineParser>
55#include <QCommandLineOption>
56#include "mainwindow.h"
57
58int main( int argc, char ** argv )
59{
60 Q_INIT_RESOURCE(texture);
61 QApplication a( argc, argv );
62
63 QCoreApplication::setApplicationName("Qt QOpenGLWidget Example");
64 QCoreApplication::setOrganizationName("QtProject");
65 QCoreApplication::setApplicationVersion(QT_VERSION_STR);
66 QCommandLineParser parser;
67 parser.setApplicationDescription(QCoreApplication::applicationName());
68 parser.addHelpOption();
69 parser.addVersionOption();
70 QCommandLineOption multipleSampleOption("multisample", "Multisampling");
71 parser.addOption(commandLineOption: multipleSampleOption);
72 QCommandLineOption srgbOption("srgb", "Use sRGB Color Space");
73 parser.addOption(commandLineOption: srgbOption);
74 parser.process(app: a);
75
76 QSurfaceFormat format;
77 format.setDepthBufferSize(24);
78 format.setStencilBufferSize(8);
79 if (parser.isSet(option: srgbOption))
80 format.setColorSpace(QSurfaceFormat::sRGBColorSpace);
81 if (parser.isSet(option: multipleSampleOption))
82 format.setSamples(4);
83 QSurfaceFormat::setDefaultFormat(format);
84
85 MainWindow mw;
86 mw.showMaximized();
87 return a.exec();
88}
89

source code of qtbase/examples/opengl/qopenglwidget/main.cpp