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direct3d 8 alpha testing

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hi, has anybody had any success with d3d8''s alpha testing? i''m trying to perform the same thing as color keying in directdraw, except using alpha testing and IDirect3DTexture8 objects. i set the alpha ref value to 0, set the compare function to greater, and enable aplha testing. i set all black pixels alpha values to 0xff and non black to 0. yet, all pixels are always drawn. m$ give this code in the d3d8 sdk: // This code example assumes that pCaps is a // D3DCAPS8 structure that was filled with a // previous call to IDirect3D8::GetDeviceCaps. if (pCaps.AlphaCmpCaps & D3DPCMPCAPS_GREATEREQUAL) { dev->SetRenderState(D3DRS_ALPHAREF, (DWORD)0x00000001); dev->SetRenderState(D3DRS_ALPHATESTENABLE, TRUE); dev->SetRenderState(D3DRS_ALPHAFUNC, D3DCMP_GREATEREQUAL); } which i based my code off. and yep, my card does support alpha testing. so has anyone out there got alpha testing to work in d3d8? i got it working in opengl, and would like to do the same thing with d3d8

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