Using a HD 6950 on Arch Linux 64
Using git codes for drm, mesa and ddx.

The game suffers from a major texture flickering in Dota 2. It has been since
the release of the game. I'll attach an API Trace later today and some
screenshots. It could be related to bug 68451, but the flickering is a lot more
important than the screenshots seem to indicate.

I could also test by disabling shaders's sb optimization.