http://bugs.winehq.org/show_bug.cgi?id=8564
------- Additional Comments From winehq@spam.tesiph.ath.cx 2007-12-06 13:08 ------- Same problem here. Using different OffscreenRenderingMode's doesn't solve the problem.
In my case, it is reproducible at the start of the second level, always at the same location. If you enable all effects you will also see water reflection applied to the whole screen (see bug 7775). Strangely enough the "Croft Mansion" does not display the dark texture problem, but does have the shader problem when near water.