http://bugs.winehq.org/show_bug.cgi?id=34055
--- Comment #18 from Henri Verbeet hverbeet@gmail.com 2013-11-19 03:58:18 CST --- Does this have any kind of demo that can reproduce the issue? The commit you found looks somewhat unlikely, given that there's no debug output with GLSL compiler errors. Does reverting it fix the issue?