main.cpp Example File

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 #include <QtCore/QThread>

 #include <QGuiApplication>

 #include <QtGui/private/qguiapplication_p.h>
 #include <QtGui/qpa/qplatformintegration.h>

 #include <QtQuick/QQuickView>

 #include "threadrenderer.h"

 int main(int argc, char **argv)
 {
     QGuiApplication app(argc, argv);

     if (!QGuiApplicationPrivate::platform_integration->hasCapability(QPlatformIntegration::ThreadedOpenGL)) {
         QQuickView view;
         view.setSource(QUrl("qrc:///scenegraph/textureinthread/error.qml"));
         view.show();
         return app.exec();
     }

     qmlRegisterType<ThreadRenderer>("SceneGraphRendering", 1, 0, "Renderer");
     int execReturn = 0;

     {
         QQuickView view;

         // Rendering in a thread introduces a slightly more complicated cleanup
         // so we ensure that no cleanup of graphics resources happen until the
         // application is shutting down.
         view.setPersistentOpenGLContext(true);
         view.setPersistentSceneGraph(true);

         view.setResizeMode(QQuickView::SizeRootObjectToView);
         view.setSource(QUrl("qrc:///scenegraph/textureinthread/main.qml"));
         view.show();

         execReturn = app.exec();
     }

     // As the render threads make use of our QGuiApplication object
     // to clean up gracefully, wait for them to finish before
     // QGuiApp is taken off the heap.
     for (QThread *t : qAsConst(ThreadRenderer::threads)) {
         t->wait();
         delete t;
     }

     return execReturn;
 }