Hi Robert I haven't tried rendering to VBO before but it's my understanding that > the technique used to render to FBO, then copy the appropriate buffer > to PBO, then re-assign this PBO as a VBO. You might be able to > implement this right now using a post draw callback attached to an > osg::Camera set up as at RTT to FRAME_BUFFER_OBJECT. >
Thanks, I will try this. I was really wondering if anything had been done since the conversation between you and Art Tevs from osg-submissions, 28/11/08 (thread entitled "General PBO implementation for GPU only memory handling (usefull for CUDA interoperability)"), in which Art said: This shouldn't be a big problem. The good thing with PBOs is that just > changing its target will change its functionality. Hence I think, it > shouldn't be a big issue to just bind the PBO as VBO before one does need it > (assuming there is correct data in the PBO). > I'll let you know how I get on, if I get anywhere at all. Best regards, David
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