[JAVA3D] Offsceen buffer | Alpha buffer

[Michael Nischt]

Is there any way to draw some geometry of the into an offscreen(or alpha) buffer and the rest into the normal canvas3d ?   I can't just use two universes, because I need the geometry clipping between objects rendered into the offScreen and the others to be done..     If it's not possible in scenegrpah mode, then how about immediate mode ?     greetings  -Michael Nischt