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Phoronix Test Suite

OpenBenchmarking.org

R600 SB Shader Back-End Enabled By Default

AMD

Published on 30 August 2013 09:12 AM EDT
Written by Michael Larabel in AMD
19 Comments

It was anticipated R600 SB shader optimizations might be enabled by default for this Radeon Gallium3D driver and now they have been for Mesa 9.3/Mesa 10.0.

The R600 SB shader optimization back-end written by Vadim Girlin is very significant for AMD's open-source driver on HD 2000 through HD 6000 series graphics hardware in that it can substantially increase the system's graphics performance for games/applications making use of GLSL shaders. The performance improvements can be very dramatic and make the open-source Radeon Gallium3D driver much more competitive against Catalyst as many Phoronix benchmarks have shown.

As of this morning, the R600 SB back-end is now enabled by default per this commit. Those wanting to optionally disable this shader optimization back-end now will have to set the R600_DEBUG=nosb environment variable.

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