80dbdf0de3
Add some extra rotations and offsets, to show off the power of what you can do with a single draw call. Also use QGLWindow instead of QGLWidget. This improves performance from 23 FPS to 30 FPS on a 4k monitor with integrated Intel graphics. Change-Id: Iedac1c14cc6057959aa15faaacdf29da91f36ab1 Reviewed-by: Laszlo Agocs <laszlo.agocs@theqtcompany.com>
79 lines
3.1 KiB
C++
79 lines
3.1 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://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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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of The Qt Company Ltd nor the names of its
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** contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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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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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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QGuiApplication app(argc, argv);
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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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