Comment # 4 on bug 28433 from Gert Wollny

I can't see any artefacts on i915 with GM45. In fact there the rendering looks
better then with the llvmpipe software renderer and r600. These two create
over-bright pixels that are not present with i915.

Versions tested: 
- i915 and llvmpipe: Mesa 13.0.6
- r600 and llvmpipe: Mesa 18.1.0-devel (git-dcd8730445