http://bugs.winehq.org/show_bug.cgi?id=17630
--- Comment #7 from Jeff Zaroyko jeffz@jeffz.name 2009-09-12 02:49:01 --- (In reply to comment #6)
"Fresh install of Wine, Steam, UT3, attempting to launch the game fails because it thinks that DX10 is present."
The game doesn't fail anymore. I was just testing it earlier with the highest graphical settings (sans DirectX 10) without using any winetricks or native dll bypasses. Is it possible that check for DX10 no longer occurs because the game is respecting the wine windows version setting of "XP"?
Regardless, the game no longer fails. You could have tested the game before responding. ;) Oh, snap!
I don't have the game - the game was available as part of a free weekend on steam which expired.
Are you testing with a clean prefix? What is important is that the dll is not present in Wine yet.