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

AMD Will Properly Support KWin With Catalyst

AMD

Published on 25 February 2012 03:51 PM EST
Written by Michael Larabel in AMD
43 Comments

For those AMD Catalyst users that were concerned by the recent statements of Martin Gräßlin that KWin will likely end up dropping their GL1 renderer, which would eliminate vintage GPU hardware support as well as Catalyst driver support, fear not.

While the latest AMD Catalyst driver fully supports up to OpenGL 4, within the KWin compositing window manager for the KDE desktop it defaults to using the OpenGL 1.x renderer. The GL1 renderer is used with the AMD binary blob since using the newer OpenGL 2.x renderer is troublesome for Catalyst. Meanwhile for the NVIDIA binary driver and even the open-source Mesa/Gallium3D drivers, the GL2 renderer works without fault.

Martin's looking at dropping the GL1 renderer since it's just used by Catalyst and old graphics processors (those that are nearly a decade old) so it's not worth the maintenance costs. Dropping the GL1 renderer right now would mean those Catalyst driver users with even the latest Radeon HD 6000/7000 series hardware would be faced by a challenging experience on the KDE desktop.

Fortunately, Martin's unlikely to drop this old renderer for a few months and AMD will be providing proper KWin support at some point going forward (i.e. the proper GL/GLES renderer with direct rendering should be bug-free or at least with minimal issues).

In this ATI bug entry, an AMD engineer mentions, "We are working on the issue and will support direct render for kwin." But when AMD will end up releasing a driver that properly supports KWin is another question... Hopefully it will be by later this calendar year so there will be no fallout for KDE users.

Thanks to "markg85" for mentioning this BugZilla entry.

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. 17-Way Linux Graphics Card Comparison With Civilization Beyond Earth
  2. AMD Kaveri: Open-Source Radeon Gallium3D vs. Catalyst 14.12 Omega Driver
  3. 12-Way AMD Catalyst 14.12 vs. NVIDIA 346 Series Linux GPU Comparison
  4. AMD Catalyst 14.12 Omega Driver Brings Mixed Results For Linux Users
Latest Linux News
  1. Fedora Doesn't Yet Enable F2FS File-System Support
  2. XZ 5.2 Adds New Multi-Threaded Options
  3. Intel 2.99.917 X.Org Driver Released, 3.0 Release Finally Near
  4. Server-Side XCB Is Being Discussed For The X.Org Server
  5. Adreno A4xx Rendering With Freedreno Takes Shape
  6. Linux 3.19-rc1 Kernel Released Ahead Of Schedule
  7. X.Org Server 1.16.3 Released To Fix Security Issues
  8. Linux 3.19 Merge Window Closes Ahead Of Schedule
  9. MIPS R6 Architecture Now Supported By GCC
  10. LowRISC To Feature Tagged Memory & Minion Cores
Latest Forum Discussions
  1. FPS capped on Linux (AMD fglrx drivers)
  2. Maker3D - create your 3D RPG
  3. Need some hand holding with upgrading xserver
  4. Speeding up systemd networking service
  5. Major Performance Breakthrough Discovered For Intel's Mesa Driver
  6. Looking for an nVidia GPU, but not sure how well they are supported.
  7. Are there an app using HSA ?
  8. The New SuperTuxKart Looks Better, But Can Cause GPU/Driver Problems