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Old 03-14-07, 06:30 PM   #8
NVIDIA Corporation
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Join Date: Mar 2005
Posts: 2,487
Default Re: About bug #284530

I talked to an OpenGL engineer about this and he explained that the FBO extension is not designed to be fast in the case that you modify a texture while its FBO is bound, and that binding and then unbinding the FBO around the ReadPixels loop eliminates the slowdown.

The drawpixels question still needs to be investigated.
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