https://bugs.freedesktop.org/show_bug.cgi?id=71488
--- Comment #8 from Alexander Tsoy alexander@tsoy.me --- 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