Intel Still Making Source Engine Performance Optimizations
Written by Michael Larabel in Intel on 14 August 2013 at 12:07 PM EDT. 9 Comments
For those not actively following the Mesa Git repository, there continues to be new performance-optimizing patches flowing in from Intel's developers for their open-source Linux graphics driver.

While new work is now focused upon Mesa 9.3 / Mesa 10.0 with Mesa 9.2 already having been branched ahead of its planned release next week, there's been plenty of good stuff flowing into Git master and it's worth checking out for Linux desktop enthusiasts and Linux gamers.

One of the most recent performance enhancements for the Intel DRI driver was i965/fs: Optimize IF/MOV/ELSE/MOV/ENDIF to SEL when possible. This patch can dramatically cut down the number of GLSL shader instructions for programs by significant percentages. The commit by Kenneth Graunke noted, "This helps Valve's Source Engine games (max -41.33%), The Cave (max -33.33%), Serious Sam 3 (max -18.64%), Yo Frankie! (max -30.19%), Zen Bound (max -22.22%), GStreamer (max -6.12%), and GLBenchmark 2.7 (max -1.94%)."

A fresh round of Mesa Git benchmarks are forthcoming for all three major Linux graphics hardware vendors.

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Michael Larabel is the principal author of 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 automated benchmarking software. He can be followed via Twitter or contacted via

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