http://bugs.winehq.org/show_bug.cgi?id=8867
--- Comment #4 from Ben Hodgetts (Enverex) ben@atomnet.co.uk 2007-10-15 12:15:54 --- Created an attachment (id=8590) --> (http://bugs.winehq.org/attachment.cgi?id=8590) The water with FBO rendering
Using FBO for Offscreen Rendering fixes the bug.