I performed some visual comparisons between your generated images and the best I could produce, using ImageMagick commands such as: magick 21.jpg -ordered-dither checks,4,4,4 "D:\Projects\Gigatron TTL\buildx64\res\image\21.tga" magick 21.jpg -ordered-dither o2x2,4,4,4 "D:\Projects\Gig...