Hello Carsten,I think I have found the origin of the problem. However, I'm not sure about the validity of the solution I have implemented and that you can find in the zip file attachment.
The problem stems from enabled scissor testing in the blit operations of the FBOGrabForeground and of the FBOBackground. I have disabled the test and then my code runs fine.
If this observation is correct then other parts of the OpenSG might also be affected. Generally, the framebuffer object blit operation takes part of the scissor testing.
Best, Johannes
OpenSG.azip
Description: Binary data
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