message: Compare RGB values of transparent pixels (again)
diff: @@ -203,26 +203,12 @@ fn check_references() {
  };
  }
  - let ref_img = coalesce_transparent_pixels(ref_img);
  - let test_img = coalesce_transparent_pixels(test_img);
  -
  if *ref_img != *test_img {
  panic!("Reference rendering does not match.");
  }
  })
  }
  -/// Replace transparent pixel values with a single value. This is useful for
  -/// disregarding differences in the RGB values of completely transparent pixels.
  -fn coalesce_transparent_pixels(mut img: image::RgbaImage) -> image::RgbaImage {
  - for p in img.pixels_mut() {
  - if p[3] == 0 {
  - *p = image::Rgba([0, 0, 0, 0]);
  - }
  - }
  - img
  -}
  -
  #[cfg(feature = "hdr")]
  #[test]
  fn check_hdr_references() {
  