Hi I'm completely new to Quartz Composer, so bare with me !
I've just had a look at the screen grabber Quartz Composer patch on http://002.vade.info/ . The nice thing about the v002 capture is the it is fully GPU accelerated. However it can only grab whats visible on screen. Now, from having read through some of the Quartz Compser docs, CVOpenGLBuffer appears to be some sort of wrapper around a pbuffer. I'd like to know if my opengl app can be modified to render to an offscreen CVOpenGLBuffer, then is it possible to have another application grab the contents of this Opengl buffer somehow by using Quartz Composer? My goal is to use hardware accelerated opengl to render to an offscreen buffer, and have another application read/display this buffer, but have the pixels stay on the GPU. If this is possible then can anyone provide some direction/help on how this could be implemented ? thanks Jonathan
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