http://bugs.winehq.org/show_bug.cgi?id=31765
--- Comment #6 from Michal Suchanek hramrach@gmail.com 2012-10-01 05:49:01 CDT --- Created attachment 41899 --> http://bugs.winehq.org/attachment.cgi?id=41899 virtualbox patch
Virtualbox people were unable to produce this patch for years.
Software rendering is about as fast as the VirtualBox OpenGL passthrough.