Marek Takes On MSAA Gallium3D Improvements
Written by Michael Larabel in Mesa on 7 December 2012 at 10:07 AM EST. 25 Comments
Just days after fixing R300 Gallium3D HyperZ support for better performance and recently making other Radeon driver improvements, Marek Olšák is onto something new: working on Multi-Sample Anti-Aliasing improvements within Gallium3D.

Pushed this morning were a number of MSAA-related commits by Marek. After several preparatory commits, the main commit this morning was st/dri: implement MSAA for GLX/DRI2 framebuffers. The commit message explains, "All MSAA buffers are allocated privately and resolved into the DRI-provided back and front buffers. If an MSAA visual is chosen, the buffers st/mesa receives are all multi-sample. st/mesa doesn't have access to the single-sample buffers in that case."

The end result for this work today is that multi-sample anti-aliasing (MSAA) is now working for a greater selection of OpenGL Linux games. The game cited as now working properly with MSAA on Gallium3D was Nexuiz.

MSAA in Gallium3D has been worked on within Mesa going back to 2010 while earlier this year there was more serious MSAA Mesa support going on with Intel finally getting this anti-aliasing technique working for their classic DRI driver. This summer was when Marek hooked in the Radeon Gallium3D MSAA support.
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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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