SDL_GL_GetDrawableSize

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.
  1. void SDL_GL_GetDrawableSize(SDL_Window* window, int* w, int* h)
    extern (C) @nogc nothrow
    static if(staticBinding)
    static if(sdlSupport >= SDLSupport.sdl201)
    void
    SDL_GL_GetDrawableSize
    (,
    int* w
    ,
    int* h
    )
  2. pSDL_GL_GetDrawableSize SDL_GL_GetDrawableSize;

Meta