http://bugs.winehq.org/show_bug.cgi?id=32295
--- Comment #1 from Mark K markk@clara.co.uk 2012-11-26 10:19:33 CST --- With Wine 1.5.18, the rendering problems go away after setting the HKEY_CURRENT_USER/Software/Wine/X11 Driver/ClientSideGraphics registry value to N.