Hi JP, thanks for you hint. I tried to code from the linked thread. Unfortunately it does not really work very well. To get you updated: I have 2 cameras, one is the original viewer cam and the other is a pbuffer one. My scenegraph has two nodes: root -> scene -> RRT Camera -> scene2 I have an image connected to the RRT camera. In the main scene I have an overlay showing the image on a texture.
I get two problems:
1) using viewer.setCamera(); alternatingly causes:
Warning: detected OpenGL error 'out of memory' after RenderBin::draw(,)
RenderStage::drawInner(,) FBO status= 0x8cd5
Maybe this is because setcamera creates a new Renderer every time?
2) When the scene for the pBuffer frames contains only the RRT camera then I
see that there seems to be no rendering because the image is not updated and i
tried a callback of the RRT camera with the printf that did not show anything.
How difficult would it be to overload the osgviewer and implement a custom
rendering of my RRT camera(s) off screen. Any Hints?
Best regards and many thanks!
Georg
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