chickadee » sdl2 » update-texture-raw!

update-texture-raw! texture rect pixels pitchprocedure

Overwrite part or all of the texture's pixel data. This is for advanced users, and must be used with caution. See SDL_UpdateTexture.

  • texture is the sdl2:texture that you wish to update
  • rect is either an sdl2:rect (to update part of the texture), or #f (to update all of the texture)
  • pixels is a pointer or locative to raw pixel data
  • pitch is an integer describing the pitch of the pixel data

Signals an exception of kind (exn sdl2) if an error occurs.

Requires sdl2 egg 0.2.0 or higher.