sdlSetRenderViewport function

bool sdlSetRenderViewport(
  1. Pointer<SdlRenderer> renderer,
  2. Pointer<SdlRect> rect
)

Set the drawing area for rendering on the current target.

Drawing will clip to this area (separately from any clipping done with SDL_SetRenderClipRect), and the top left of the area will become coordinate (0, 0) for future drawing commands.

The area's width and height must be >= 0.

\param renderer the rendering context. \param rect the SDL_Rect structure representing the drawing area, or NULL to set the viewport to the entire target. \returns true on success or false on failure; call SDL_GetError() for more information.

\threadsafety This function should only be called on the main thread.

\since This function is available since SDL 3.1.3.

\sa SDL_GetRenderViewport \sa SDL_RenderViewportSet

extern SDL_DECLSPEC bool SDLCALL SDL_SetRenderViewport(SDL_Renderer *renderer, const SDL_Rect *rect)

Implementation

bool sdlSetRenderViewport(
    Pointer<SdlRenderer> renderer, Pointer<SdlRect> rect) {
  final sdlSetRenderViewportLookupFunction = libSdl3.lookupFunction<
      Uint8 Function(Pointer<SdlRenderer> renderer, Pointer<SdlRect> rect),
      int Function(Pointer<SdlRenderer> renderer,
          Pointer<SdlRect> rect)>('SDL_SetRenderViewport');
  return sdlSetRenderViewportLookupFunction(renderer, rect) == 1;
}