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Cleaning Up The R600 Gallium3D Driver

Mesa

Published on 31 January 2012 07:41 AM EST
Written by Michael Larabel in Mesa
15 Comments

Marek Olšák, the well-known independent contributor to Mesa that's made a great deal of enhancements to the Radeon driver stack over the past few years, has a new patch-set. The latest patch-set he published last night cleans up the R600g driver and reworks its cache flushing code. This patch-set affects more than 2,000 lines of code, which is significant for this open-source Gallium3D driver.

Yesterday's patch-set builds upon another set of 19 patches he published this weekend (Remove all uses of the register mask) which affected about 800 lines of code.

The intent of this work by Marek is to provide "a series of cleanups I am going to make to improve the horribly over-engineered and slow state management of r600g."

The register mask removal was a prerequiste to this current work, which in this latest series tidies up the driver a bit while also adding a new mechanism for emitting states, which is inspired by the older R300g driver. Marek says this new mechanism is simple yet robust. He's also made various other low-level changes to R600g.

This R600g work should end up being part of Mesa 8.1. For those wanting to dig into more details about this work, the patch-set from yesterday can currently be found on the mailing list.

The open-source ATI/AMD Radeon Linux driver code still has a ways to catch-up to the Catalyst driver. But if you're interested in boosting your graphics performance, try the 2D tiling code and enabling PCI Express 2.0 support.

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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