The paper was published in January, does anybody know if any emulator implements the algorithm? I would love to try it. Another thing I have been wondering for

The paper was published in January, does anybody know if any emulator implements the algorithm? I would love to try it. Another thing I have been wondering for a while is that, as far as I know, these algorithms work on the final picture, after all the backgrounds and sprites have been drawn. I wonder if scaling every layer independently and then compositing them would give better results.