- texture-alpha-mod textureprocedure
- set! (texture-alpha-mod texture) modsetter
- texture-alpha-mod-set! texture modsetter
See SDL_GetTextureAlphaMod and SDL_SetTextureAlphaMod.
These procedures signal an exception of kind (exn sdl2) if an error occurs.
Requires sdl2 egg 0.2.0 or higher.