AMDGPU's xf86-video-amdgpu vs. Mode-Setting DDX Performance
Written by Michael Larabel in X.Org on 14 February 2016 at 08:53 AM EST. 27 Comments
X.ORG --
To complement the xf86-video-ati vs. xf86-video-modesetting benchmarks from quite a while ago, here are some tests of the 3D performance in seeing any performance differences between the xf86-video-amdgpu DDX for the GCN 1.2 GPUs versus using the generic xf86-video-modesetting driver.

Additionally with this xf86-video-amdgpu vs. xf86-video-modesetting comparison I also did a second run of the AMDGPU DDX when enabling DRI3 rendering compared to DRI2 by default. Tests were done with a Radeon R9 Fury on Linux 4.5 with Mesa 11.2-devel. xf86-video-amdgpu 1.0.99 Git and xf86-video-modesetting 1.17.2 were the DDX drivers used.




Long story short, at least for this setup with the R9 Fury, the performance was nearly the same with the DDX driver not impacting the OpenGL performance.
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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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