Comment # 8 on bug 71488 from Alexander Tsoy

I have the same issue with Cape Verde PRO [Radeon HD 7750]

software versions:

media-libs/mesa-10.0.2
sys-devel/llvm-3.4
sys-kernel/hardened-sources-3.12.6-r4
x11-drivers/xf86-video-ati-9999 (latest git))
x11-libs/glamor-9999 (latest git)
x11-libs/libdrm-2.4.50