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Fastest way to feed QC back into a Core Image

Subject: Fastest way to feed QC back into a Core Image
From: Gabriele de Simone <email@hidden>
Date: Thu, 26 May 2005 01:23:42 -0400
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Hi,

I would like to take the results of a QCRenderer and feed them to a different pipeline as a Core Image. I was thinking about the following approach:

- attach a QCRenderer to a Pbuffer-based CGLContext - create a CVOpenGLBuffer and attach the CGLContext to it (not clear from CV docs as to what happens when you attach though) - create the CIImage using the constructor that takes a CVImageBuffer

My questions for you: Has anyone tried this already? Any sample code? If the above strategy works, am I right in assuming that the CIImage will be created without any expensive AGP -> main memory -> AGP trips? In principle, that's what it seems the [CIImage imageWithCVImageBuffer:] method should do...

Thanks
Gabriele
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