http://bugs.winehq.org/show_bug.cgi?id=5776
--- Comment #13 from Neil Skrypuch ns03ja@brocku.ca 2008-10-17 19:30:00 --- It seems that this is mostly fixed, though not completely. The water at the beginning and in the middle of the test looks good, but right at the end when it reverses the view and starts looking back at the stream, the water looks bad again.
In a related note, the regular Pixel Shader test now appears to work completely.