Re: 2D distortions of resulting imagery

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Jim Helman (jimh++at++surreal)
Mon, 19 Sep 94 23:19:12 -0700

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> I've obviously thought of copying the contents of the back-buffer into texture
> memory each frame, but I don't think this could be done at a rate even close
> to real-time. (If I'm wrong please tell me!)

Depends on the resolution, but it can be expensive. When loading an
8-bit RGB texture, fbsubtexload will give you about 8-9 MTexel/sec,
which means doing 512x512 would take up most of a 30Hz frame time.
rgds,

-jim helman

jimh++at++surreal.asd.sgi.com
415/390-1151

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