https://bugs.freedesktop.org/show_bug.cgi?id=91444
--- Comment #6 from Shawn Starr shawn.starr@rogers.com --- Marek's has fixed this in http://cgit.freedesktop.org/~mareko/mesa/commit/?id=21f4eb11d76d45c8b4099e0d...
This has been tested, works for me now.