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AMD: Experimental "ShadowPrimary" Acceleration

AMD

Published on 01 June 2012 10:57 AM EDT
Written by Michael Larabel in AMD
14 Comments

Hidden away within the new Catalyst 12.6 Linux driver are 2D acceleration improvements. These improvements aren't visible by default but there's a special command to activate this "ShadowPrimary" support.

AMD hasn't publicly talked about this new means of 2D acceleration or even privately explained what's all changed. Though from the sounds of it, it's basically like using ShadowFB with Catalyst. For the primary frame-buffer, it's using a shadow frame-buffer with the CPU.

Enabling this 2D improvement can be done by running aticonfig --set-pcs-u32=DDX,ShadowPrimary,1. Run at your own risk.

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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