[ADD] - added GLFormat for qtglwidget.

src/gui/qt4/platformDependent/WQtGLWidgetAll.cpp

@@ -47,7 +47,7 @@ typedef osgViewer::GraphicsWindowWin32::WindowData WindowData;
 
 
 WQtGLWidgetAll::WQtGLWidgetAll( std::string nameOfViewer, QWidget* parent, WGECamera::ProjectionMode projectionMode, const QGLWidget * shareWidget )
-    : QGLWidget( parent, shareWidget ),
+    : QGLWidget( getDefaultFormat(), parent, shareWidget ),
       m_nameOfViewer( nameOfViewer ),
       m_recommendedSize()
 {
@@ -243,3 +243,11 @@ void WQtGLWidgetAll::reset()
 {
     m_Viewer->reset();
 }
+
+const QGLFormat WQtGLWidgetAll::getDefaultFormat()
+{
+    QGLFormat format;
+    format.setSwapInterval( 1 );    // according to Qt Doc, this should enable VSync. But it doesn't.
+    return format;
+}
+

src/gui/qt4/platformDependent/WQtGLWidgetAll.h

@@ -30,6 +30,7 @@
 #include <QtCore/QTimer>
 #include <QtGui/QWidget>
 #include <QtOpenGL/QGLWidget>
+#include <QtOpenGL/QGLFormat>
 
 #include <boost/shared_ptr.hpp>
 #include <boost/signals2/signal.hpp>
@@ -115,6 +116,13 @@ public:
      */
     boost::shared_ptr< WGEViewer > getViewer() const;
 
+    /**
+     * Creates and returns a default OpenGL format description with vertical sync enabled.
+     *
+     * \return the format descriptor
+     */
+    static const QGLFormat getDefaultFormat();
+
 public slots:
     /**
      * Resets the contained view using the installed manipulator.