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Gallium3D Anti-Aliasing (MSAA) Is Going In

Mesa

Published on 19 May 2010 11:16 AM EDT
Written by Michael Larabel in Mesa
7 Comments

VMware's Roland Scheidegger has announced he soon will be merging gallium-msaa to Mesa master soon, which will put this branch into the mainline Mesa code-base in time for the Mesa 7.9 release in the coming months.

As implied by its name, the gallium-msaa branch introduces support for Multi-Sampling Anti-Aliasing (MSAA) for the Gallium3D driver architecture. Specifically this branch makes the structural changes needed to allow MSAA to work within Mesa on the Gallium3D architecture and a context function to set the sample mask for MSAA. However, the Gallium3D hardware drivers themselves haven't yet been hooked-in to actually offer multi-sampling support. Hopefully this will come soon.

While the Gallium3D drivers are faster than classic Mesa drivers (namely the ATI Radeon R300g driver), the ATI Gallium3D driver is not yet faster than the proprietary Catalyst driver. Using MSAA will only drop the frame-rate further, so it will not yet be of any real value to users once the drivers properly are hooked into offering MSAA, but should be useful in the future once a Gallium3D stack supports OpenGL 3.x, have gone through more performance optimizations, and are able to handle more demanding games/applications.

The gallium-msaa branch merge with the underlying Gallium3D changes that went on can be read about on the Mesa development list.

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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