Proprietary vs. Linux Git, Mesa 11.2-devel, DRI3 For R600g/RadeonSI
The two cards on the R600g driver were closer to the proprietary results than was the R9 290. The HD 7950 again was experiencing issues on the open-source stack while Catalyst had issues with the R7 370.
Exciting about the Xonotic results were how close the R9 290 on the open-source driver was performing to the proprietary driver.
Up next are some 4K results.