Function sdl2_sys::SDL_GetSurfaceBlendMode

pub unsafe extern "C" fn SDL_GetSurfaceBlendMode(
    surface: *mut SDL_Surface, 
    blendMode: *mut SDL_BlendMode
) -> c_int

\brief Get the blend mode used for blit operations.

\param surface The surface to query. \param blendMode A pointer filled in with the current blend mode.

\return 0 on success, or -1 if the surface is not valid.

\sa SDL_SetSurfaceBlendMode()