ATI + Shaders + PBuffer + Alpha Test Problem

Hi, I need to use Alpha Test (inside Pbuffer) in the combination as told in the title. But performance drops, and it needs alot of time. Without the Alpha test everything works ok. Is there any known bug or problem with this combination?


If you are using a floating point pbuffer, this is normal behaviour. Alphatesting is not hardware supported with fp-pbuffers on ATI cards.

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