Julien, thanks for your hint, but i don't know what you mean :) I've look at this sample: https://github.com/openscenegraph/OpenSceneGraph/blob/master/examples/osgsimplegl3/osgsimplegl3.cpp Cheers, Remo ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=74448#74448