AMD's Open-Source Radeon Linux Driver: 2014 Was Incredible
The Qfusion-powered Warsow game also experienced huge improvements in the frame-rate over the course of 2014 for both the R600g and RadeonSI drivers.
Running Xonotic with high quality settings saw the frame-rate more than double this year for the newer AMD graphics processors. Linux 3.18 and Mesa 10.5-devel were still improving the performance even more compared to what Ubuntu 14.10 offered out-of-the-box.
Xonotic with ultra image quality settings showed great performance improvements too in 2014 with the three tested Radeon graphics processors.
Lastly for this demanding open-source OpenGL game were performance improvements each step of the way when running with ultimate image quality settings.