http://bugs.winehq.org/show_bug.cgi?id=31773
--- Comment #9 from Xavier Vachon xvachon@gmail.com 2012-10-15 19:30:53 CDT --- Created attachment 42147 --> http://bugs.winehq.org/attachment.cgi?id=42147 log +d3d,+d3d9,+d3dx9
Per comment #6, here is a +d3d,+d3d9,+d3dx9 log tailed to 100000 lines (the log the game produced is about 1 GB, I'm not sure if this caught the issue..). I switched the shadow detail from off to very high, technically the faulty code should be exposed during that switch.
In the meantime, the workaround is to turn shadow detail to off. The game is very playable without them.