http://bugs.winehq.org/show_bug.cgi?id=34342
--- Comment #22 from Tom a3732043@drdrb.net --- It seems, that this texture issue should be investigated, because this might be a problem which effects all 3D games of some kind.
As I mentioned in #15 there might be another issue with transparent textures as used in that referred dungeon. I hope, someone picks this up.