Index: trunk/FACT++/gui/BasicGlCamera.cc
===================================================================
--- trunk/FACT++/gui/BasicGlCamera.cc	(revision 12472)
+++ trunk/FACT++/gui/BasicGlCamera.cc	(revision 12473)
@@ -34,7 +34,10 @@
 
 
-    BasicGlCamera::BasicGlCamera(QWidget* cParent) : QGLWidget(cParent)
-    {
-        setFormat(QGLFormat(QGL::DoubleBuffer | QGL::DepthBuffer));
+    BasicGlCamera::BasicGlCamera(QWidget* cParent)
+    : QGLWidget(QGLFormat(QGL::DoubleBuffer |
+                          QGL::DepthBuffer  |
+                          QGL::IndirectRendering),cParent)
+    {
+        QGL::setPreferredPaintEngine(QPaintEngine::OpenGL);
         fWhite = -1;
         fWhitePatch = -1;