1. Computers
  2. Display Drivers
  3. Graphics Cards
  4. Memory
  5. Motherboards
  6. Processors
  7. Software
  8. Storage
  9. Operating Systems


Facebook RSS Twitter Twitter Google Plus


Phoronix Test Suite

OpenBenchmarking Benchmarking Platform
Phoromatic Test Orchestration

Closer To Radeon H.264 VDPAU In Gallium3D

Mesa

Published on 15 January 2012 07:51 AM EST
Written by Michael Larabel in Mesa
3 Comments

On Sunday morning there were a number of video-related commits to Mesa for H.264 Gallium3D by AMD's Christian König.

While not yet a complete implementation, Christian König did land the H.264 infrastructure inside the VDPAU Gallium3D state tracker. This was only about 100 lines of code (commit) while several other commits pushed this morning also furthered the video support (commits by König).

UVD (Unified Video Decoder) support in the open-source stack is one of AMD's three priorities for their open-source Linux driver, but it's not known yet whether this video decoder can be opened up yet (see the linked posting for more details as to why open-source video support has been difficult). Regardless of whether UVD can be documented and opened up at this point, H.264 VDPAU support can also be implemented without a hardware video decoder and instead be done -- albeit not as effectively -- using GPU shaders. This is how the other Radeon video playback acceleration is done over Gallium3D at this time for Radeon and other hardware.

While it's only the H.264 VDPAU infrastructure that's landed today, hopefully by the time Mesa 8.1 rolls around this summer we will see a working implementation. With Mesa 8.0 already having been branched, this is all work going into the next Mesa release. The soon-to-be-released Mesa 8.0 does feature some video playback improvements for Radeon and Nouveau drivers with the landing of the pipe-video branch and other VA-API/VDPAU state tracker improvements to Gallium3D.

For those interested in open-source graphics drivers and your key concern is about hardware-accelerated video playback, your best bet right now in terms of hardware backed by open-source drivers is going with Intel Sandy Bridge (or Ivy Bridge in a few months). Intel's latest hardware has VA-API support implemented in hardware for both video decode and encode over libva, which is working quite well if you're running the latest code.

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 .
Latest Articles & Reviews
  1. Ubuntu 15.04 Offers Faster OpenGL For AMD Radeon GPUs On Open-Source
  2. Ubuntu 15.04 Brings Some Graphics Performance Improvements For Intel Haswell
  3. Sub-$20 802.11n USB WiFi Adapter That's Linux Friendly
  4. The Lenovo T450s Is Working Beautifully With Linux
  5. Linux 4.0 SSD EXT4 / Btrfs / XFS / F2FS Benchmarks
  6. Linux 4.0 Hard Drive Comparison With Six File-Systems
Latest Linux News
  1. Phoronix Server Migration
  2. GCC 5.2 Will Come In Two To Three Months
  3. AMD FP3 Motherboard Ported To Coreboot
  4. The Difference In Optimizations Between NIR & GLSL
  5. OpenMandriva Lx 3 Alpha: Adds UEFI Support, Defaults To LXQt
  6. Systemd Kills Off Shutdownd
  7. There's Now More Than 1,100 Games On Steam For Linux
  8. Btrfs In Linux 4.1 Has Fixes For File-Systems Of 20 Terabytes & Up
  9. Microsoft's CoreCLR Now Works On FreeBSD
  10. Unigine 2.0 Beta 2 Brings PBR, SSR, Kinect 2 Support
Most Viewed News This Week
  1. AMD Releases New "AMDGPU" Linux Kernel Driver & Mesa Support
  2. Ubuntu's Desktop-Next Switching From .DEBs To Snappy
  3. My Favorite Computer Desk Of The Past Decade For Less Than $100
  4. AMD Open-Sources "Addrlib" From Catalyst
  5. Library Operating System (LibOS) For Linux Still Being Pursued
  6. Debian 8.0 Jessie Is Ready For Release This Weekend
  7. GIMP's Porting To GTK3 Continues
  8. Features Thus Far For The Linux 4.1 Kernel