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Transparent sprites (transparency map+orginal bitmap=smooth) in DirectX7? Possible?


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#1 Anonymous Poster_Anonymous Poster_*   Guests   -  Reputation:

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Posted 28 November 1999 - 09:11 AM

Is is possible to make transparent sprites with DirectX7? Not just one transparent color like in a gif, but using transparency bitmap (0..256).

If not, where can I find a free library to do this fast?


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#2 Splat   Members   -  Reputation: 122

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Posted 28 November 1999 - 09:11 AM

DirectX7 does not support this (alpha-blending), although Microsoft has been saying that it will for a while now. You will need to write your own blit routine to handle the alpha channel. Some of the free game libraries floating around have support for alpha-blending, but I'm not sure which or how well. Check out the MMX Enhanced Alpha-Blending article right here at GameDev.Net for some more info.

- Splat





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