message: Fix 8x supersampling mode
diff: @@ -276,6 +276,7 @@ inline array<R, 8> make_primary_rays(
  result[4] = invoke_cam_primary_ray(R{}, cam, samp, expand_pixel<T>().x(x) - T(0.125), expand_pixel<T>().y(y) + T(0.0625), T(width), T(height));
  result[5] = invoke_cam_primary_ray(R{}, cam, samp, expand_pixel<T>().x(x) + T(0.375), expand_pixel<T>().y(y) + T(0.1825), T(width), T(height));
  result[6] = invoke_cam_primary_ray(R{}, cam, samp, expand_pixel<T>().x(x) - T(0.375), expand_pixel<T>().y(y) + T(0.3125), T(width), T(height));
  + result[7] = invoke_cam_primary_ray(R{}, cam, samp, expand_pixel<T>().x(x) + T(0.125), expand_pixel<T>().y(y) + T(0.4375), T(width), T(height));
  return result;
  }
  