alpha blits
March 06, 2000 05:30 AM
It seems that 2d blitting in directdraw doesnt contain any alpha blending support. Does anyone know how i can implement this efficiently or can point me to some articles that deal with this sort of thing? i could use d3d but i need the 2d images to be any size possible and also use font images.
March 06, 2000 06:36 AM
You need write the alpha blending code yourself.
Because DirectDraw does not surpport it now.maybe DX 10 ?
But you can get the free alpha blending code if you mail me:
ustudio@163.net
Because DirectDraw does not surpport it now.maybe DX 10 ?
But you can get the free alpha blending code if you mail me:
ustudio@163.net
122
March 06, 2000 09:00 AM
Alpha blending in software (not D3D) will be extremely slow because it must take place in system memory. Exceptions: you already have your surfaces in system memory OR you have a fast AGP card. If you do have AGP, I''d suggest that you test your code on a non-AGP card. As for code/examples, there''s one here on gamedev (it was one of the first featured articles) and there are a couple on tune-it.com
- mallen22@concentric.net
- http://www.cfxweb.net/mxf/
- mallen22@concentric.net
- http://www.cfxweb.net/mxf/
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