http://bugs.winehq.org/show_bug.cgi?id=17630
--- Comment #10 from Jeff Zaroyko jeffz@jeffz.name 2009-09-27 02:47:25 --- (In reply to comment #9)
UT3 (Steam) is still working with wine-1.1.30 and a clean wine prefix.
You could do a reverse regression test to work out what has changed in Wine that UT3 thinks dx10 is nolonger available -- if there is no result then we can conclude that UT3 has changed, otherwise I'm inclined to keep this bug open because the dll remains unimplemented.