I am new to graphics programming and have some problems.
When displaying png’s with alpha channel things get really slow.
- If ‘flag’ is (SDL_SRCALPHA|SDL_MULACCEL), alpha blending is enabled
- with alpha pre-multiplication enabled.*
- Alpha blend premultiplication is an optimization that cuts the actual
- alpha blend operation in half. There are a couple of drawbacks however.
SDL_MULACCEL is not defined anywhere.
Is this a feature not implemented yet?
Is ther any other way to speed up alpha blending?