Quote:Original post by therealremiAre you refering to D3DFMT_A8? If so, you might want to be careful - prior to the GeForce 6-series and Radeon 9500's this isn't supported. That is, every piece of hardware where you might be required to use fixed-func blending because pixel shaders aren't available won't allow this trick [wink]
The key hack for me was to use a format for C (the mask) which contains alpha only - fortunately DirectX supports such format.
Quote:Original post by jollyjeffersQuote:Original post by therealremiAre you refering to D3DFMT_A8? If so, you might want to be careful - prior to the GeForce 6-series and Radeon 9500's this isn't supported. That is, every piece of hardware where you might be required to use fixed-func blending because pixel shaders aren't available won't allow this trick [wink]
The key hack for me was to use a format for C (the mask) which contains alpha only - fortunately DirectX supports such format.
hth
Jack
