message: Use int for window coordinates
diff: @@ -235,13 +235,13 @@ void tiled_sched<R>::impl::init_render_func(K kernel, SP sparams, unsigned frame
  render_tile = [=](recti const& tile, random_sampler<T>& samp)
  {
  - unsigned numx = tile_width / packet_size<T>::w;
  - unsigned numy = tile_height / packet_size<T>::h;
  - for (unsigned i = 0; i < numx * numy; ++i)
  + int numx = tile_width / packet_size<T>::w;
  + int numy = tile_height / packet_size<T>::h;
  + for (int i = 0; i < numx * numy; ++i)
  {
  - auto pos = vec2i(i % numx, i / numx);
  - auto x = tile.x + pos.x * packet_size<T>::w;
  - auto y = tile.y + pos.y * packet_size<T>::h;
  + vec2i pos(i % numx, i / numx);
  + int x = tile.x + pos.x * packet_size<T>::w;
  + int y = tile.y + pos.y * packet_size<T>::h;
  recti xpixel(x, y, packet_size<T>::w - 1, packet_size<T>::h - 1);
  if ( !overlapping(clip_rect, xpixel) )
  