As mentioned in #813657, the virglrenderer library package is now in NEW
I asked some questions about project status, architecture and other dependency versions on the upstream mailing list: https://lists.freedesktop.org/archives/virglrenderer-devel/2016-March/000051.html The main thing to note there is that they only support GNU/Linux guests for now and the guest needs a 4.4 kernel. Regards, Daniel