filledPolygonRgba function
Implementation
bool filledPolygonRgba(
  Pointer<SdlRenderer> renderer,
  Pointer<Int16> vx,
  Pointer<Int16> vy,
  int n,
  int r,
  int g,
  int b,
  int a, {
  int blendMode = SDL_BLENDMODE_BLEND,
}) =>
    filledPolygonRgbaMt(renderer, vx, vy, n, r, g, b, a, blendMode: blendMode);