R600g Geometry Shaders Come For R600/R700
Written by Michael Larabel in AMD on 31 January 2014 at 12:50 AM EST. 64 Comments
Yesterday I wrote about Geometry Shaders support proposed for the R600 Gallium3D driver, a major OpenGL 3.2 feature and is needed for getting the R600g driver up to par with RadeonSI and the other Mesa/Gallium3D drivers either at or nearing OpenGL 3.3 compliance. Some Phoronix readers expressed outrage that this initial GS support was limited to the Radeon HD 5000 series and newer, but now there's an early patch to provide geometry shaders to older AMD hardware.

David Airlie has published an initial patch that provides OpenGL Geometry Shaders support for R600 (Radeon HD 2000/3000) and R700 (Radeon HD 4000) graphics processors.

This R600/R700 GS work requires one patch to the Gallium3D driver and then also one Linux kernel patch. On the kernel side that likely won't emerge until Linux 3.15.

Those users interested in testing out this work for the older Radeon GPUs with the open-source AMD Linux graphics driver can find the work on the Mesa-dev list.
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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 Twitter or contacted via MichaelLarabel.com.

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