GLSL Gotchas

Jump to bottom

mattdesl edited this page Feb 22, 2013 · 11 revisions

There are some gotchas to be aware of when working with GLSL on various platforms.

Mac OSX

Array declaration is broken on Snow Leopard[1]

ES (Android, iOS, WebGL)

Be mindful of step() as it may create branching (although it really shouldn't). Benchmark with smoothstep() to see if performance improves.
Ternary operator may not be supported on certain Android devices[1]
'For' loops may cause problems on certain Android devices[1]