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.org

Mesa Support For GPU Offloading With GLX DRI3, EGL Wayland

Mesa

Published on 28 May 2014 12:08 AM EDT
Written by Michael Larabel in Mesa
7 Comments

Axel Davy has posted a new set of 11 patches to allow for GPU offloading by Mesa 3D drivers with GLX DRI3 and EGL Wayland.

Davy wrote, "Currently Gpu offloading is supported only with GLX DRI2. You need to set it up with xrandr, and you need a DDX loaded for the secondary device, even if it has no screen. You use the DRI_PRIME env var to set up which Gpu the application should use. Unfortunately it has some issues: Rendering to a pixmap is unsupported, and you need either to be fullscreen, or to be in a composited environment to not get a black content. These patches add Gpu offloading support to GLX DRI3 and EGL Wayland. Most of the limitations mentioned above are addressed."

The patches allow for drirc settings as well as the DRI_PRIME environment variable for handling the GPU offloading in the newly-supported configurations.

Axel added, "The GLX DRI3 Gpu offloading implementation allows to render to a pixmap, and will get in sync the back and front buffer with copies. There is no need to be in a composited environment. The last patch allows blitImage to use dma copy on radeonsi. It gives a performance boost, especially in cpu limited benchmarks. This makes for these cards Gpu offloading faster for DRI3 than for DRI2. Nouveau already has an optimised blitImage path because it uses the 2D engine to copy."

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 Linux Hardware Reviews
  1. NVIDIA GeForce GTX 980: The Best GPU For Linux Gamers
  2. ROCCAT LUA: A Linux-Friendly Gaming Mouse
  3. Cheetah Mounts: The Affordable Way To Put Your TV On The Wall
  4. Scythe Mugen MAX
Latest Linux Articles
  1. Preview: Radeon Gallium3D Performance For CS:GO On Linux
  2. XWayland Linux Gaming Performance With GNOME Wayland On Fedora 21
  3. EXT4/Btrfs/XFS/F2FS Benchmarks On Linux 3.17
  4. Fedora 21 Alpha First Impressions: It's Great
Latest Linux News
  1. KDE Plasma 5.1 Now In Beta
  2. Systemd & Debian Were Most Popular In September
  3. Microsoft Announces... Windows 10 With A Start Menu
  4. Borderlands 2 Launches On Steam For Linux
  5. Debian Jessie Might Get Rid Of The kFreeBSD Port
  6. Fedora Might Try A New Scheduling Strategy For Its Releases
  7. AMD's Catalyst Working On A GLSL Shader Cache
  8. OpenMP 4.0 Offloading Is Closer For GCC 5
  9. Wayland Presentation Extension Added To Weston
  10. Intel Skylake Support Rolls Out To Mesa's DRM
Latest Forum Discussions
  1. Updated and Optimized Ubuntu Free Graphics Drivers
  2. Nero CD/DVD Burning Software On Linux Is Dead
  3. New Group Calls For Boycotting Systemd
  4. FSF Issues Statement On Shellshock Bash Vulnerability
  5. X.Org Women Outreach Program Only Turns Up Two Applicants So Far
  6. X.Org Is Looking For Some Female Help
  7. Advertisements On Phoronix
  8. NVIDIA Alerts Nouveau: They're Starting To Sign/Validate GPU Firmware Images