- surface-blend-mode surfaceprocedure
- surface-blend-mode-raw surfaceprocedure
- set! (surface-blend-mode surface) modesetter
- surface-blend-mode-set! surface modesetter
See SDL_GetSurfaceBlendMode and SDL_SetSurfaceBlendMode.
- surface-blend-mode returns a blend mode symbol for built-in modes, or an integer for custom blend modes created with compose-custom-blend-mode.
- surface-blend-mode-raw returns an integer.
- The setters accept either a symbol or integer.
These procedures signal an exception of kind (exn sdl2) if an error occurs.