a6b8b03f86
OpenGL ES 3.1 introduces compute shaders. This patch enables them also in QOpenGLShader/QOpenGLShaderProgram. A GL/GLES example using QOpenGLShaderProgram for compute shaders is also included. Change-Id: I3951a302d7c2b096548f829b9b4578b5a525c453 Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
119 lines
4.8 KiB
C++
119 lines
4.8 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 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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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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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 <QOffscreenSurface>
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#include <QOpenGLContext>
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#include <QDebug>
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#include <QPair>
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#include "glwindow.h"
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bool OGLSupports(int major, int minor, bool gles = false)
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{
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QOpenGLContext ctx;
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QSurfaceFormat fmt;
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fmt.setVersion(major, minor);
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if (gles)
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fmt.setRenderableType(QSurfaceFormat::OpenGLES);
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else
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fmt.setRenderableType(QSurfaceFormat::OpenGL);
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ctx.setFormat(fmt);
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ctx.create();
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if (!ctx.isValid())
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return false;
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int ctxMajor = ctx.format().majorVersion();
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int ctxMinor = ctx.format().minorVersion();
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bool isGles = (ctx.format().renderableType() == QSurfaceFormat::OpenGLES);
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if (isGles != gles) return false;
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if (ctxMajor < major) return false;
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if (ctxMajor == major && ctxMinor < minor)
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return false;
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return true;
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}
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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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qDebug() << "Support for GL 2.0 "<<( OGLSupports(2,0) ? "yes" : "no");
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qDebug() << "Support for GL 2.1 "<<( OGLSupports(2,1) ? "yes" : "no");
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qDebug() << "Support for GL 3.0 "<<( OGLSupports(3,0) ? "yes" : "no");
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qDebug() << "Support for GL 3.1 "<<( OGLSupports(3,1) ? "yes" : "no");
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qDebug() << "Support for GL 3.2 "<<( OGLSupports(3,2) ? "yes" : "no");
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qDebug() << "Support for GL 3.3 "<<( OGLSupports(3,3) ? "yes" : "no");
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qDebug() << "Support for GL 4.0 "<<( OGLSupports(4,0) ? "yes" : "no");
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qDebug() << "Support for GL 4.1 "<<( OGLSupports(4,1) ? "yes" : "no");
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qDebug() << "Support for GL 4.2 "<<( OGLSupports(4,2) ? "yes" : "no");
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qDebug() << "Support for GL 4.3 "<<( OGLSupports(4,3) ? "yes" : "no");
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qDebug() << "Support for GL 4.4 "<<( OGLSupports(4,4) ? "yes" : "no");
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qDebug() << "Support for GL 4.5 "<<( OGLSupports(4,5) ? "yes" : "no");
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qDebug() << "Support for GLES 2.0 "<<( OGLSupports(2,0,true) ? "yes" : "no");
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qDebug() << "Support for GLES 3.0 "<<( OGLSupports(3,0,true) ? "yes" : "no");
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qDebug() << "Support for GLES 3.1 "<<( OGLSupports(3,1,true) ? "yes" : "no");
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qDebug() << "Support for GLES 3.2 "<<( OGLSupports(3,2,true) ? "yes" : "no");
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QSurfaceFormat fmt;
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fmt.setDepthBufferSize(24);
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// Request OpenGL 4.3 compatibility or OpenGL ES 3.1.
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if (OGLSupports(4,3)) {
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qDebug("Requesting 4.3 compatibility context");
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fmt.setVersion(4, 3);
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fmt.setRenderableType(QSurfaceFormat::OpenGL);
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fmt.setProfile(QSurfaceFormat::CompatibilityProfile);
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} else if (OGLSupports(3,1,true)) {
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qDebug("Requesting 3.1 GLES context");
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fmt.setVersion(3, 1);
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fmt.setRenderableType(QSurfaceFormat::OpenGLES);
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} else {
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qWarning("Error: This system does not support OpenGL Compute Shaders! Exiting.");
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return -1;
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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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