Hello.
I’m a user who owns a Nexus 4. I recently saw a new update which fix the shaders. It works for the most shaders now, but some are acting wrong. For instance, motion-blur-simple gives a black screen, Gameboy handheld shaders don’t work and hq4x has a wrong geometry render, I’m adding up a screenshot to show the result
(Tetris FTW)
I hope that will be useful to squash this bug!
See ya!