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. Scythe Mugen MAX
  2. Intel Core i7 5960X Haswell-E On Linux
  3. Intel 80GB 530 Series M.2 SSD On Linux
  4. With A New Motherboard, The Core i7 5960X Haswell-E Lights Up
Latest Linux Articles
  1. 7-Way Linux Desktop Gaming Comparison On Ubuntu 14.10
  2. Intel P-State vs. CPUFreq Benchmarks On The i7-5960X
  3. RadeonSI GLAMOR Benchmarks With X.Org Server 1.16
  4. RadeonSI Gallium3D vs. Catalyst At 4K UHD On Linux
Latest Linux News
  1. FreeBSD 10.1 Has The New VT Driver, Hardware Improvements
  2. AntiMicro 2.6 Yields Greater Compatibility For Gamepads On Linux
  3. OpenGL 3.3 / GLSL 3.30 Lands For Intel Sandy Bridge On Mesa
  4. AMD's RadeonSI Gallium3D Driver Sees Some Improvements
  5. Mesa 10.3 Released With The Latest Open-Source GPU Driver Improvements
  6. GNOME 3.13.92 Officially Released
  7. Wine 1.7.27 Is Still Working Towards Direct2D Support
  8. Wasteland 2 Officially Launched Today, Including For Linux Gamers
  9. Tropico 5 Launches On Steam For Linux
  10. The Intel Core i7 5960X Continues Running Great On Linux
Latest Forum Discussions
  1. Stop grabbing my keyboard :(
  2. X.Org Women Outreach Program Only Turns Up Two Applicants So Far
  3. Glamor now enabled in Debian radeonsi
  4. Can Linux kill a motherboard?
  5. SSD seems slow
  6. New stress testing utility for GPU's
  7. New Group Calls For Boycotting Systemd
  8. It's Now Possible To Play Netflix Natively On Linux Without Wine Plug-Ins