DRI2 vs. DRI3 Radeon Linux OpenGL Performance
Written by Michael Larabel in Display Drivers on 1 November 2015. Page 4 of 4. 47 Comments

Under the synthetic OpenGL tests with GpuTest, there was no difference with the Radeon R9 290 or HD 6870 when comparing the DRI2 and DRI3 rendering modes.

For Xonotic and OpenArena, enabling Direct Rendering Infrastructure 3 yielded much greater frame-rates than the DRI2 default. DRI3 performance gains are most apparent in CPU-bound workloads. Assuming you're running X.Org Server 1.17+ and other up-to-date open-source driver components, it's as easy as setting Option "DRI3" "1" if you wish to play around with the Radeon DRI3 support. Comment in our forums if you run into any issues or see the earlier article if you're still getting familiarized with DRI3.


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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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