1 files changed, 36 insertions, 4 deletions
diff --git a/examples/opengl/hellowindow/main.cpp b/examples/opengl/hellowindow/main.cpp
index af5943adf4..b247807019 100644
--- a/examples/opengl/hellowindow/main.cpp
+++ b/examples/opengl/hellowindow/main.cpp
@@ -1,4 +1,6 @@
 #include <QGuiApplication>
+#include <QScreen>
+#include <QThread>
 
 #include "hellowindow.h"
 
@@ -6,13 +8,43 @@ int main(int argc, char **argv)
 {
     QGuiApplication app(argc, argv);
 
-    Renderer renderer;
+    QScreen *screen = QGuiApplication::primaryScreen();
 
-    HelloWindow windowA(&renderer);
+    QRect screenGeometry = screen->availableGeometry();
+
+    QSurfaceFormat format;
+    format.setDepthBufferSize(16);
+    format.setSamples(4);
+
+    QPoint center = QPoint(screenGeometry.center().x(), screenGeometry.top() + 80);
+    QSize windowSize(400, 320);
+    int delta = 40;
+
+    Renderer rendererA(format);
+    Renderer rendererB(format, &rendererA);
+
+    QThread renderThread;
+    rendererB.moveToThread(&renderThread);
+    renderThread.start();
+
+    QObject::connect(qGuiApp, SIGNAL(lastWindowClosed()), &renderThread, SLOT(quit()));
+
+    HelloWindow windowA(&rendererA);
+    windowA.setGeometry(QRect(center, windowSize).translated(-windowSize.width() - delta / 2, 0));
+    windowA.setWindowTitle(QLatin1String("Thread A - Context A"));
     windowA.setVisible(true);
 
-    HelloWindow windowB(&renderer);
+    HelloWindow windowB(&rendererA);
+    windowB.setGeometry(QRect(center, windowSize).translated(delta / 2, 0));
+    windowB.setWindowTitle(QLatin1String("Thread A - Context A"));
     windowB.setVisible(true);
 
-    return app.exec();
+    HelloWindow windowC(&rendererB);
+    windowC.setGeometry(QRect(center, windowSize).translated(-windowSize.width() / 2, windowSize.height() + delta));
+    windowC.setWindowTitle(QLatin1String("Thread B - Context B"));
+    windowC.setVisible(true);
+
+    app.exec();
+
+    renderThread.wait();
 }