1 files changed, 118 insertions, 0 deletions
diff --git a/examples/opengl/computegles31/main.cpp b/examples/opengl/computegles31/main.cpp
new file mode 100644
index 0000000000..ff2a1e622d
--- /dev/null
+++ b/examples/opengl/computegles31/main.cpp
@@ -0,0 +1,118 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of The Qt Company Ltd nor the names of its
+**     contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QGuiApplication>
+#include <QSurfaceFormat>
+#include <QOffscreenSurface>
+#include <QOpenGLContext>
+#include <QDebug>
+#include <QPair>
+#include "glwindow.h"
+
+bool OGLSupports(int major, int minor, bool gles = false)
+{
+    QOpenGLContext ctx;
+    QSurfaceFormat fmt;
+    fmt.setVersion(major, minor);
+    if (gles)
+        fmt.setRenderableType(QSurfaceFormat::OpenGLES);
+    else
+        fmt.setRenderableType(QSurfaceFormat::OpenGL);
+
+    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;
+    return true;
+}
+
+int main(int argc, char *argv[])
+{
+    QGuiApplication app(argc, argv);
+
+    qDebug() << "Support for GL 2.0   "<<( OGLSupports(2,0) ? "yes" : "no");
+    qDebug() << "Support for GL 2.1   "<<( OGLSupports(2,1) ? "yes" : "no");
+    qDebug() << "Support for GL 3.0   "<<( OGLSupports(3,0) ? "yes" : "no");
+    qDebug() << "Support for GL 3.1   "<<( OGLSupports(3,1) ? "yes" : "no");
+    qDebug() << "Support for GL 3.2   "<<( OGLSupports(3,2) ? "yes" : "no");
+    qDebug() << "Support for GL 3.3   "<<( OGLSupports(3,3) ? "yes" : "no");
+    qDebug() << "Support for GL 4.0   "<<( OGLSupports(4,0) ? "yes" : "no");
+    qDebug() << "Support for GL 4.1   "<<( OGLSupports(4,1) ? "yes" : "no");
+    qDebug() << "Support for GL 4.2   "<<( OGLSupports(4,2) ? "yes" : "no");
+    qDebug() << "Support for GL 4.3   "<<( OGLSupports(4,3) ? "yes" : "no");
+    qDebug() << "Support for GL 4.4   "<<( OGLSupports(4,4) ? "yes" : "no");
+    qDebug() << "Support for GL 4.5   "<<( OGLSupports(4,5) ? "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 4.3 compatibility or OpenGL ES 3.1.
+    if (OGLSupports(4,3)) {
+        qDebug("Requesting 4.3 compatibility context");
+        fmt.setVersion(4, 3);
+        fmt.setRenderableType(QSurfaceFormat::OpenGL);
+        fmt.setProfile(QSurfaceFormat::CompatibilityProfile);
+    } else if (OGLSupports(3,1,true)) {
+        qDebug("Requesting 3.1 GLES context");
+        fmt.setVersion(3, 1);
+        fmt.setRenderableType(QSurfaceFormat::OpenGLES);
+    } else {
+        qWarning("Error: This system does not support OpenGL Compute Shaders! Exiting.");
+        return -1;
+    }
+    QSurfaceFormat::setDefaultFormat(fmt);
+
+    GLWindow glWindow;
+    glWindow.showMaximized();
+
+    return app.exec();
+}