media-libs/virglrenderer 0.5.0 is out, please bump. https://cgit.freedesktop.org/virglrenderer
simple ebuild copy and dropping libdrm patch is sufficient for update.
commit 79e877f353dbd6149667cc627a44c52030e46345 Author: Matthias Maier <tamiko@gentoo.org> Date: Sun Oct 9 22:11:39 2016 -0500 media-libs/virglrenderer: version bump to 0.5.0, bug #592056 Package-Manager: portage-2.3.0