i3D Symposium 2018, a neat graphics conference, will be in Montreal at start of May! I happen to be on the papers committee somehow :)
Call for participation: http://i3dsymposium.github.io/2018/cfp.html
Paeth rotation is the algorithm for implementing sprite rotation using three shears. It was a popular demo scene trick and is still used by ImageMagick.
I'm rotating some tiny sprites under a low-color palette with nearest neighbor rotation, and they look horrible of course. I wondered, will Paeth rotation look better? The answer is, no, it gives exactly the same result as nearest neighbor--the advantage was integer perf, not quality.
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