1 files changed, 16 insertions, 18 deletions
diff --git a/examples/opengl/hellowindow/hellowindow.cpp b/examples/opengl/hellowindow/hellowindow.cpp
index 5a232e6a7b..3c4f88bdfe 100644
--- a/examples/opengl/hellowindow/hellowindow.cpp
+++ b/examples/opengl/hellowindow/hellowindow.cpp
@@ -6,39 +6,37 @@
 
 #include <qmath.h>
 
-Renderer::Renderer()
+Renderer::Renderer(const QSurfaceFormat &format, Renderer *share)
     : m_initialized(false)
+    , m_format(format)
 {
-    m_format.setDepthBufferSize(16);
-    m_format.setSamples(4);
-
     m_context = new QGuiGLContext;
-    m_context->setFormat(m_format);
+    m_context->setFormat(format);
+    if (share)
+        m_context->setShareContext(share->m_context);
     m_context->create();
 }
 
-QSurfaceFormat Renderer::format() const
-{
-    return m_format;
-}
-
 HelloWindow::HelloWindow(Renderer *renderer)
     : m_colorIndex(0)
     , m_renderer(renderer)
 {
     setSurfaceType(QWindow::OpenGLSurface);
-    setWindowTitle(QLatin1String("Hello Window"));
-
-    setFormat(renderer->format());
+    setWindowFlags(Qt::Window | Qt::WindowTitleHint | Qt::WindowMinMaxButtonsHint | Qt::WindowCloseButtonHint);
 
     setGeometry(QRect(10, 10, 640, 480));
 
+    setFormat(renderer->format());
+
     create();
 
     QTimer *timer = new QTimer(this);
     connect(timer, SIGNAL(timeout()), this, SLOT(render()));
     timer->start(10);
 
+    connect(this, SIGNAL(needRender(QSurface *, const QColor &, const QSize &)),
+            renderer, SLOT(render(QSurface *, const QColor &, const QSize &)));
+
     updateColor();
 }
 
@@ -47,6 +45,11 @@ void HelloWindow::mousePressEvent(QMouseEvent *)
     updateColor();
 }
 
+void HelloWindow::render()
+{
+    emit needRender(this, m_color, size());
+}
+
 void HelloWindow::updateColor()
 {
     QColor colors[] =
@@ -62,11 +65,6 @@ void HelloWindow::updateColor()
         m_colorIndex = 0;
 }
 
-void HelloWindow::render()
-{
-    m_renderer->render(this, m_color, geometry().size());
-}
-
 void Renderer::render(QSurface *surface, const QColor &color, const QSize &viewSize)
 {
     if (!m_context->makeCurrent(surface))