http://bugs.winehq.org/show_bug.cgi?id=13122
--- Comment #20 from Roderick Colenbrander thunderbird2k@gmx.net 2008-05-22 01:27:35 --- It doesn't proof it has to do with FBOs yet. You should set the OffscreenRenderingMethod to backbuffer and if it works in that mode with antialiasing then it is a FBO problem for sure.