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AMD R600 Gallium3D Optimizing Back-End Merged

AMD

Published on 30 April 2013 04:16 PM EDT
Written by Michael Larabel in AMD
28 Comments

Vadim Girlin's shader-optimizing back-end for the AMD R600 Gallium3D driver has been merged into mainline Mesa.

Going back a while now Vadim Girlin has been working on shader optimizations for the open-source AMD driver. This optimized back-end hasn't been a huge focus among other AMD Linux driver developers since they are already set in their ways of using the R600 LLVM back-end, which is needed for their OpenCL/GPGPU focus.

Vadim, meanwhile, has continued improving his R600g optimization back-end and now it's been merged into mainline Mesa as an experimental option.

Per this commit, the R600 Gallium3D optimizing back-end for AMD Radeon HD 2000 through HD 6000 series hardware can be enabled via the R600_DEBUG=sb environment variable.

This new back-end was committed just hours ago and came in over the copurse of several Git commits. Benchmarks on Phoronix of the R600 "SB" improvements are forthcoming but until then checkout the 15-Way Open vs. Closed Source NVIDIA/AMD Linux GPU Comparison.

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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