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

Radeon Page-Flipping Patches Come About

AMD

Published on 26 October 2010 08:10 AM EDT
Written by Michael Larabel in AMD
54 Comments

Since the Linux 2.6.32 kernel there has been the KMS page-flipping ioctl and it's been hooked into the Intel DRM driver for providing tear-free updating of the screen by low-latency page-flipping. This KMS page-flipping ioctl is also used by Wayland. Since late October there's also been Nouveau patches for page-flipping, but now patches have finally emerged for bringing this support to the Radeon DRM driver.

AMD's Alex Deucher shared these latest patches last night that go against the Radeon DRM and the xf86-video-ati DDX for providing this page-flipping support. The announcement was made here and require using the drm-next tree plus David Airlie's 2D tiling fix patches. Alex is reporting that the page-flipping is working out well for Radeon R600/R700/Evergreen GPUs (the Radeon HD 2000/3000/4000/5000 series), but earlier R100 through R500 ASICs still need additional work.

Unfortunately, it doesn't appear as if this work would be ready before the merge window for the Linux 2.6.37 kernel closes. The page-flipping still isn't working well in tiling scenarios and as aforementioned the support for earlier GPUs needs some additional attention. As such, we may not see mainline ATI Radeon page-flipping support with the open-source driver until the Linux 2.6.38 kernel. At least we have XvMC on R600g support to play with for the time being.

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. A Walkthrough Of The New 32 System Open-Source Linux Benchmarking Test Farm
  2. Habey MITX-6771: Mini-ITX Board With Quad-Core J1900 Bay Trail
  3. OCZ Vector 150 SSD On Linux
  4. Noctua i4 CPU Cooler: Great For Cooling High-End LGA-2011v3 CPUs
Latest Linux Articles
  1. AMD Kaveri: Open-Source Radeon Gallium3D vs. Catalyst 14.12 Omega Driver
  2. 12-Way AMD Catalyst 14.12 vs. NVIDIA 346 Series Linux GPU Comparison
  3. AMD Catalyst 14.12 Omega Driver Brings Mixed Results For Linux Users
  4. 6-Way Winter 2014 Linux Distribution Comparison
Latest Linux News
  1. FSF's High Priority Project List Now Has A Committee
  2. Details On Using OpenACC & GPUs With GCC
  3. Ubuntu 15.04 Alpha 1 For Its Various Flavors
  4. Git 2.2.1 Released To Fix Critical Security Issue
  5. WTFTW: A Tiling Window Manager Written In Rust
  6. Jolla's Sailfish OS Update 10 Is Now Available
  7. HP To Launch Linux++ Operating System Next Year
  8. Civilization: Beyond Earth Launches For Linux
  9. NIR Has Been Revised As A New IR For Mesa
  10. New 64-bit Linux Kernel Vulnerabilities Disclosed This Week
Latest Forum Discussions
  1. XLennart: A Game For Systemd Haters With Nothing Better To Do
  2. The New SuperTuxKart Looks Better, But Can Cause GPU/Driver Problems
  3. Are there an app using HSA ?
  4. Debian init discussion in Phoenix Wright format
  5. Bench specific mount point
  6. Tool for measuring FPS in games
  7. Need some hand holding with upgrading xserver
  8. Ubuntu Developers Still Thinking What To Do About Adobe Flash Support