message: Also perform scissor test with simple_sched
diff: @@ -24,10 +24,17 @@ void simple_sched<R>::frame(K kernel, SP sched_params, unsigned frame_num)
  // TODO: support any sampler
  random_sampler<typename R::scalar_type> samp(detail::tic(typename R::scalar_type{}));
  + auto scissor_box = sched_params.scissor_box;
  +
  for (int y = 0; y < sched_params.rt.height(); ++y)
  {
  for (int x = 0; x < sched_params.rt.width(); ++x)
  {
  + if (x < scissor_box.x || y < scissor_box.y || x >= scissor_box.w || y >= scissor_box.h)
  + {
  + continue;
  + }
  +
  auto r = detail::make_primary_rays(
  R{},
  typename SP::pixel_sampler_type{},
  