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GL Context for Quicklook generators

Hi,

I am done with a small fast path render-engine to generate a preview of a 3d file format written in OpenGL. I would like to use it in a Quicklook generator
to render one frame as a static preview.

As I am still quite new to Mac-specific APIs I would to like to ask you, if you can give me an advice which Apple APIs to use
for setting up / getting a GL context and a rendertarget (FBO or PBuffer) as far as performance goes. The example in the Quick Look Programming
Guide only shows how to request a CGContextRef, which does not seem to provide a GLContext. Just pointing to the right part
of Apple documentation would already help me a lot.

Thanks,

Heinrich Fink

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