From: Alan H. <aho...@va...> - 2000-08-31 16:17:25
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On Thu, Aug 31, 2000 at 09:47:39AM -0600, Chris Malley wrote: > Some implementations of OpenGL then to optimize pixel operations > (eg, glDrawPixels) poorly. Since my application makes heavy use > of glDrawPixels, I'm curious about acceleration of pixel operations > in DRI. Is support for pixel operations as mature as geometry > acceleration? I'm working mainly with Voodoo3 and Matrox cards. > It depends. Your application should try to match the pixel format and type that matches the hardware. There's usually a fastpath in the drivers for this. If your app doesn't match the hardware it'll fallback to a slower path which can then penalize you - a LOT. Alan. |