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

Lots Of X.Org GLAMOR Improvements Planned

X.Org

Published on 12 January 2014 12:02 AM EST
Written by Michael Larabel in X.Org
14 Comments

Eric Anholt at Intel has been devoting much time recently to cleaning up and improving GLAMOR to make it possible to have fast and reliable 2D acceleration via OpenGL within the X.Org world while using a device independent driver.

Eric Anholt presented this past week at Linux.Conf.Au 2014 about his recent GLAMOR work, which can be watched via this mirror (MP4 file). GLAMOR is the implementation of X.Org 2D code-paths implemented using OpenGL shaders. GLAMOR continues to be offered as a build-time option for the Intel DDX while it's required within the AMD Radeon driver for 2D acceleration on Radeon HD 7000 series graphics processors and newer.

The benefit to GLAMOR is that around 200,000 lines of device dependent code could be replaced by a few thousand lines of device independent code. Besides having device-dependent 2D-focused code being a huge maintenance burden, it's an ever-growing burden with new code being needed for each driver and each new graphics hardware generation. The huge work involved is part of the reason why AMD has already committed to GLAMOR for all new hardware.

The downside though to using GLAMOR right now is slower performance than having dedicated 2D DDX code-paths. There's also higher CPU overhead in using 2D with OpenGL. On the performance front, Eric has been making some improvements in his various branched code-bases, but much work is left ahead.

Some of the upcoming items left to be accomplished in the GLAMOR world include finishing DRI2/DRI3 page-flipping for the generic DDX mode-setting driver, fixing the DRI3 API for PRIME support, adding X-Video overlay support, finishing OpenGL ES 2.0 support, porting GLAMOR to core OpenGL, and making it all an automatic page-flipping no-tearing X compositor experience.

Those wishing to learn more on the current and future work should watch Eric's presentation from the aforementioned link. There's also many other Phoronix articles on GLAMOR.

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. AMD R600g/RadeonSI Performance On Linux 3.16 With Mesa 10.3-devel
  2. Intel Pentium G3258 On Linux
  3. SilverStone Precision PS10
  4. ASRock Z97 Extreme6
Latest Linux Articles
  1. Nouveau vs. Radeon vs. Intel Tests On Linux 3.16, Mesa 10.3-devel
  2. KVM Benchmarks On Ubuntu 14.10
  3. X.Org Server 1.16 Officially Released With Terrific Features
  4. Ubuntu With Linux 3.16 Smashes OS X 10.9.4 On The MacBook Air
Latest Linux News
  1. A New Video Has Us Real Excited About The New UT For Linux
  2. CoreOS Experiences Its First Stable Release
  3. GNOME 3.13.4 Continues Working On Wayland & More
  4. Wine 1.7.23 Has Initial Support For 64-bit Android Builds
  5. FreeBSD Developing A New Automounter, Other Features
  6. Guix 0.7 Can Now Install The GNU Operating System
  7. X.Org Foundation Still Works Towards Becoming An SPI Project
  8. Open-Source AMD Hawaii Support Should Now Be Working!
  9. KDE Developers Continue Working Toward Wayland Support
  10. Ubuntu 14.04.1 LTS Released
Latest Forum Discussions
  1. Updated and Optimized Ubuntu Free Graphics Drivers
  2. AMD "Hawaii" Open-Source GPU Acceleration Still Not Working Right
  3. Radeon related kernel bug??
  4. how the US intellegentia operates:
  5. AMD Publishes Open-Source Linux HSA Kernel Driver
  6. Next-Gen OpenGL To Be Announced Next Month
  7. Open-Source Radeon Performance Boosted By Linux 3.16
  8. Remote gui not accessible in Phoronix Test Suite 5.2