@Torbach nailed it, I was thinking UV distortion as well when I was reading your post. The only other things I would say are pretty common are:
Vertex Displacement/World Position Offset
Color gradient look-up tables (LUTs)
@Torbach nailed it, I was thinking UV distortion as well when I was reading your post. The only other things I would say are pretty common are:
Vertex Displacement/World Position Offset
Color gradient look-up tables (LUTs)