http://bugs.winehq.org/show_bug.cgi?id=30232
--- Comment #10 from Henri Verbeet hverbeet@gmail.com 2012-04-03 05:58:24 CDT --- It's probably hitting the software fallback that hack was originally supposed to avoid, which is stupid because the hardware can easily run these shaders. You should probably ask Apple to fix the drivers, one way or another.