Sorry for the answer which is probably not quite what you are hoping for, but basically at the moment, due to lack of developer resources, 3D support in X11 guests is basically user supported (see the wiki for a longer version.
Sorry for the answer which is probably not quite what you are hoping for, but basically at the moment, due to lack of developer resources, 3D support in X11 guests is basically user supported (see the wiki for a longer version.