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// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include <QGuiApplication>
#include <QSurfaceFormat>
#include <QOffscreenSurface>
#include <QOpenGLContext>
#include <QDebug>
#include <QPair>
#include "glwindow.h"
bool OGLSupports(int major, int minor, bool gles = false, QSurfaceFormat::OpenGLContextProfile profile = QSurfaceFormat::NoProfile)
{
QOpenGLContext ctx;
QSurfaceFormat fmt;
fmt.setVersion(major, minor);
if (gles) {
fmt.setRenderableType(QSurfaceFormat::OpenGLES);
} else {
fmt.setRenderableType(QSurfaceFormat::OpenGL);
fmt.setProfile(profile);
}
ctx.setFormat(fmt);
ctx.create();
if (!ctx.isValid())
return false;
int ctxMajor = ctx.format().majorVersion();
int ctxMinor = ctx.format().minorVersion();
bool isGles = (ctx.format().renderableType() == QSurfaceFormat::OpenGLES);
if (isGles != gles) return false;
if (ctxMajor < major) return false;
if (ctxMajor == major && ctxMinor < minor)
return false;
if (!gles && ctx.format().profile() != profile)
return false;
return true;
}
int main(int argc, char *argv[])
{
QGuiApplication app(argc, argv);
qDebug() << "Support for GL 2.0 noprof "<<( OGLSupports(2,0,false) ? "yes" : "no");
qDebug() << "Support for GL 2.0 core "<<( OGLSupports(2,0,false, QSurfaceFormat::CoreProfile) ? "yes" : "no");
qDebug() << "Support for GL 2.0 compat "<<( OGLSupports(2,0,false, QSurfaceFormat::CompatibilityProfile) ? "yes" : "no");
qDebug() << "Support for GL 2.1 noprof "<<( OGLSupports(2,1,false) ? "yes" : "no");
qDebug() << "Support for GL 2.1 core "<<( OGLSupports(2,1,false, QSurfaceFormat::CoreProfile) ? "yes" : "no");
qDebug() << "Support for GL 2.1 compat "<<( OGLSupports(2,1,false, QSurfaceFormat::CompatibilityProfile) ? "yes" : "no");
qDebug() << "Support for GL 3.0 noprof "<<( OGLSupports(3,0,false) ? "yes" : "no");
qDebug() << "Support for GL 3.0 core "<<( OGLSupports(3,0,false, QSurfaceFormat::CoreProfile) ? "yes" : "no");
qDebug() << "Support for GL 3.0 compat "<<( OGLSupports(3,0,false, QSurfaceFormat::CompatibilityProfile) ? "yes" : "no");
qDebug() << "Support for GL 3.1 noprof "<<( OGLSupports(3,1,false) ? "yes" : "no");
qDebug() << "Support for GL 3.1 core "<<( OGLSupports(3,1,false, QSurfaceFormat::CoreProfile) ? "yes" : "no");
qDebug() << "Support for GL 3.1 compat "<<( OGLSupports(3,1,false, QSurfaceFormat::CompatibilityProfile) ? "yes" : "no");
qDebug() << "Support for GL 3.2 core "<<( OGLSupports(3,2,false,QSurfaceFormat::CoreProfile) ? "yes" : "no");
qDebug() << "Support for GL 3.2 compat "<<( OGLSupports(3,2,false,QSurfaceFormat::CompatibilityProfile) ? "yes" : "no");
qDebug() << "Support for GL 3.3 core "<<( OGLSupports(3,3,false,QSurfaceFormat::CoreProfile) ? "yes" : "no");
qDebug() << "Support for GL 3.3 compat "<<( OGLSupports(3,3,false,QSurfaceFormat::CompatibilityProfile) ? "yes" : "no");
qDebug() << "Support for GL 4.0 core "<<( OGLSupports(4,0,false,QSurfaceFormat::CoreProfile) ? "yes" : "no");
qDebug() << "Support for GL 4.0 compat "<<( OGLSupports(4,0,false,QSurfaceFormat::CompatibilityProfile) ? "yes" : "no");
qDebug() << "Support for GL 4.1 core "<<( OGLSupports(4,1,false,QSurfaceFormat::CoreProfile) ? "yes" : "no");
qDebug() << "Support for GL 4.1 compat "<<( OGLSupports(4,1,false,QSurfaceFormat::CompatibilityProfile) ? "yes" : "no");
qDebug() << "Support for GL 4.2 core "<<( OGLSupports(4,2,false,QSurfaceFormat::CoreProfile) ? "yes" : "no");
qDebug() << "Support for GL 4.2 compat "<<( OGLSupports(4,2,false,QSurfaceFormat::CompatibilityProfile) ? "yes" : "no");
qDebug() << "Support for GL 4.3 core "<<( OGLSupports(4,3,false,QSurfaceFormat::CoreProfile) ? "yes" : "no");
qDebug() << "Support for GL 4.3 compat "<<( OGLSupports(4,3,false,QSurfaceFormat::CompatibilityProfile) ? "yes" : "no");
qDebug() << "Support for GL 4.4 core "<<( OGLSupports(4,4,false,QSurfaceFormat::CoreProfile) ? "yes" : "no");
qDebug() << "Support for GL 4.4 compat "<<( OGLSupports(4,4,false,QSurfaceFormat::CompatibilityProfile) ? "yes" : "no");
qDebug() << "Support for GL 4.5 core "<<( OGLSupports(4,5,false,QSurfaceFormat::CoreProfile) ? "yes" : "no");
qDebug() << "Support for GL 4.5 compat "<<( OGLSupports(4,5,false,QSurfaceFormat::CompatibilityProfile) ? "yes" : "no");
qDebug() << "Support for GLES 2.0 "<<( OGLSupports(2,0,true) ? "yes" : "no");
qDebug() << "Support for GLES 3.0 "<<( OGLSupports(3,0,true) ? "yes" : "no");
qDebug() << "Support for GLES 3.1 "<<( OGLSupports(3,1,true) ? "yes" : "no");
qDebug() << "Support for GLES 3.2 "<<( OGLSupports(3,2,true) ? "yes" : "no");
QSurfaceFormat fmt;
fmt.setDepthBufferSize(24);
// Request OpenGL ES 3.1 context, as this is a GLES example. If not available, go for OpenGL 4.3 core.
if (OGLSupports(3,1,true)) {
qDebug("Requesting 3.1 GLES context");
fmt.setVersion(3, 1);
fmt.setRenderableType(QSurfaceFormat::OpenGLES);
} else if (OGLSupports(4,3,false,QSurfaceFormat::CoreProfile)) {
qDebug("Requesting 4.3 core context");
fmt.setVersion(4, 3);
fmt.setRenderableType(QSurfaceFormat::OpenGL);
fmt.setProfile(QSurfaceFormat::CoreProfile);
} else {
qWarning("Error: This system does not support OpenGL Compute Shaders! Exiting.");
return -1;
}
QSurfaceFormat::setDefaultFormat(fmt);
GLWindow glWindow;
glWindow.showMaximized();
return app.exec();
}
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