Comment 4 for bug 284346

I've built a new package that drops our two dithering patches, and includes the dithering rework up to commit 435cf7da. I decided to omit the rename patch since it was pretty large and didn't seem to bear on the problem.

The patch built, installed, and ran fine; I found no regressions on the hardware used for #17094, and the upstream changes fixes the original issue as well as my patches had. I did not find it completely eliminated banding though; but it looks no
worse than before.

I've reviewed the patch in depth. The patch is unfortunately pretty lengthy for SRU purposes, but I don't see a way to simplify it further while retaining the fixes it provides.