http://bugs.winehq.org/show_bug.cgi?id=3775
------- Additional Comments From reub2000@earthlink.net 2005-10-11 19:00 ------- I did a little bit more testing. It's not the compostite extention that's causing the slowdown, but window transparency.
UT2004 runs with transparency enabled just fine. Obviously a game is able to access the 3d hardware with transparency enabled.