AMD Toying With XvMC In Gallium3D R300 Driver
Written by Michael Larabel in AMD on 2 February 2010 at 04:27 PM EST. 18 Comments
XvMC support came to Gallium3D through a Google Summer of Code project for 2008 that involved getting X-Video Motion Compensation running atop the Nouveau driver with NVIDIA hardware. We described this work in The State Of Gallium3D Video Decoding and subsequently in Nouveau's Gallium3D Driver Gets Video Boost. In 2009 this XvMC work using GPU shaders moved into the X.Org state tracker. XvMC in Gallium3D hasn't been too much of a focus as developers are still working on driver support and other state trackers like for OpenGL 3.x and OpenCL. More users are also interested in VDPAU and its superior support and decoding abilities than the antiquated XvMC. However, AMD's Cooper Yuan has been toying around with this Gallium3D-XvMC code for the R300 Gallium3D driver.

Cooper Yuan is one of the few AMD developers that focuses on the open-source code and documentation process and in the past few days has committed new code to port the XvMC "video stuff" to the mesa/pipe-video branch. According to AMD's John Bridgman that commented in our forums, Cooper is working on driver-level XvMC work while taking advantage of the existing higher-level XvMC support that originated with the GSoC project.

There really isn't anything too exciting at the moment, but we'll keep an eye on his commits.

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Michael Larabel is the principal author of 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 automated benchmarking software. He can be followed via Twitter or contacted via

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