b0310ddd16
Move the instantiation of QGuiApplication to the top since it is required by QOpenGLContext::openGLModuleType(). Task-number: QTBUG-55671 Change-Id: I506cee193fe2ba48400851588a8ef079848bc2f4 Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
89 lines
3.6 KiB
C++
89 lines
3.6 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the examples of the Qt Toolkit.
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** BSD License Usage
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** "Redistribution and use in source and binary forms, with or without
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QGuiApplication>
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#include <QSurfaceFormat>
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#include <QOpenGLContext>
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#include "glwindow.h"
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// This example demonstrates easy, cross-platform usage of OpenGL ES 3.0 functions via
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// QOpenGLExtraFunctions in an application that works identically on desktop platforms
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// with OpenGL 3.3 and mobile/embedded devices with OpenGL ES 3.0.
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// The code is always the same, with the exception of two places: (1) the OpenGL context
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// creation has to have a sufficiently high version number for the features that are in
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// use, and (2) the shader code's version directive is different.
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int main(int argc, char *argv[])
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{
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QGuiApplication app(argc, argv);
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QSurfaceFormat fmt;
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fmt.setDepthBufferSize(24);
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// Request OpenGL 3.3 compatibility or OpenGL ES 3.0.
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if (QOpenGLContext::openGLModuleType() == QOpenGLContext::LibGL) {
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qDebug("Requesting 3.3 compatibility context");
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fmt.setVersion(3, 3);
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fmt.setProfile(QSurfaceFormat::CompatibilityProfile);
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} else {
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qDebug("Requesting 3.0 context");
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fmt.setVersion(3, 0);
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}
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QSurfaceFormat::setDefaultFormat(fmt);
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GLWindow glWindow;
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glWindow.showMaximized();
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return app.exec();
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}
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