For some reason the game comes packaged with atioglxx.dll it runs fine with that dll in the. I'm using the GOG version of the game which is 1.03. Mind you i've had a ton of issues with getting post processing to work on all other games because i'm an ATi user(HD6970 2gb).
For some reason I cannot get this to work or any post processing to work like QEPro or QGL effects or the conversion OPENGL ENB which i've been able to get to work on every other opengl game old and new.