http://bugs.winehq.org/show_bug.cgi?id=8960
--- Comment #24 from Stefan Dösinger stefandoesinger@gmx.at 2008-02-29 14:00:41 --- The problem with this is that none of the developers uses a X server without GLX. So it breaks regularly.
Wine DOES have a 8->24 bpp conversion. If your game is broken than that is due to something else, not due to missing bit depth conversion