https://bugs.freedesktop.org/show_bug.cgi?id=71138
--- Comment #9 from yashax@windowslive.com --- It looks like this bug is fixed with current mesa master. Can you please verify that on your hardware?
------------------- System information: Radeon HD 4850 Ubuntu 13.10 x86_64 Linux 3.14 libdrm 2.4.53+git1404110630.504d60 xserver-xorg-video-radeon 7.3.99+git1404022026.ed0cfb OpenGL renderer string: Gallium 0.4 on AMD RV770 OpenGL core profile version string: 3.3 (Core Profile) Mesa 10.2.0-devel (git-55f9bbd saucy-oibaf-ppa) OpenGL core profile shading language version string: 3.30