http://bugs.winehq.org/show_bug.cgi?id=19376
--- Comment #10 from Henri Verbeet hverbeet@gmail.com 2009-07-20 04:15:41 --- (In reply to comment #4)
As for actually disabling compositing for D3D applications, I'm not sure how this is handled on Windows for pre-Vista applications, but applications that are aware of it usually disable it themselves.
For the record, I checked, and Vista has a "Disable desktop composition" option on its compatibility tab for shortcuts. That's probably enough to argue for a similar option in winecfg. The first step towards implementing this should be implementing the relevant parts of dwmapi.