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Gallium3D R600 Shader Variant Caching

Mesa

Published on 10 June 2012 06:53 AM EDT
Written by Michael Larabel in Mesa
42 Comments

The latest R600g driver improvement this weekend is for shader variant caching rather than rebuilding the shaders each time.

On Saturday published to the mailing list was the "r600g: cache shader variants instead of rebuilding" patch. This modestly-sized patch was authored by Vadim Girlin.

This patch is said to improve performance for some applications like FlightGear. From a bug report, with FlightGear on R600g the frame-rate went from around 20 FPS with the normal rendering back-end to now around 40 FPS with the patched copy. With the R600g LLVM back-end, originally it was around three FPS but is now also up around 40 FPS.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
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