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

The Underlying KWin Improvements In KDE 4.7

KDE

Published on 28 May 2011 09:44 AM EDT
Written by Michael Larabel in KDE
12 Comments

Now that the first KDE SC 4.7 beta is available, Martin Gräßlin, the lead developer of the KWin, has blogged about some of the underlying improvements made to the compositing window manager for KDE during this development cycle. Of course, most Phoronix graphics junkies will already know what's changed based upon previous articles, but here's an overview for those not caught up to speed.

The key improvements that Martin talks about in this blog post include:

- OpenGL 2.0 / OpenGL ES 2.0 support. KWin's compositor is now written for GL2 / GLES2 with a programmable pipeline rather than relying upon OpenGL fixed functionality. This results in some performance improvements and the OpenGL ES support will allow the compositor to work on many embedded devices. The OpenGL ES 2.0 / EGL support is best off, but it's not yet supported by all graphics drivers. For anyone still (unfortunately) living in an OpenGL 1.x world, the OpenGL 2 / GLSL shaders can be disabled until you buy new hardware. (Contrary to earlier plans of Kwin using OpenGL 3.x, this wasn't done for KDE SC 4.7.)

- Various optimizations to the blur effect.

- Blocking / suspended compositing. This allows full-screen multi-media applications and OpenGL games/programs block the KWin compositing to avoid overhead and other problems. VLC and Wine are the projects initially interested in taking advantage of this KDE flag to suspend the compositing while full-screen applications are active. Users can also manually setup their applications to temporarily create the blocking for their desired software.

- A new shadow system.

- Code refactoring from one of the KDE Google Summer of Code (GSoC) developers.

- Support for the graphics system Raster. In particular, for those with the NVIDIA binary driver, the window resizing performance should be much better.

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. Intel Xeon E5-1680 v3 & E5-2687W v3 Compared To The Core i7 5960X On Linux
  2. Intel 120GB 530 Series SSD Linux Performance
  3. Btrfs/EXT4/XFS/F2FS RAID 0/1/5/6/10 Linux Benchmarks On Four SSDs
  4. AMD's Windows Catalyst Driver Remains Largely Faster Than Linux Drivers
Latest Linux Articles
  1. Apple OS X 10.10 vs. Ubuntu 14.10 Performance
  2. Mesa 10.5-devel Brings Some Intel Haswell HD Graphics Changes Over Mesa 10.3
  3. NVIDIA vs. Nouveau Drivers With Linux 3.18 + Mesa 10.4-devel
  4. Is The Open-Source NVIDIA Driver Fast Enough For Steam On Linux Gaming?
Latest Linux News
  1. Expensive "Free/Libre Software Laptop" Uses A NVIDIA GPU
  2. QEMU 2.2-rc3 Released, Final Release Pushed Back By Couple Days
  3. 64-bit ARM FreeBSD Support Is Taking Shape
  4. GCW Zero Starts Seeing New Game Releases
  5. Intel's Cherry Trail Delayed To Next Year
  6. Bq Introduces More Android Devices, But Still No Ubuntu Phones
  7. Qt 5.4 Release Candidate Expected Later This Week
  8. ArrayFire Accelerated Compute Library Open-Sourced
  9. Amazon's Fire TV Stick: A Nice, Affordable Media Center Option
  10. Google Puts Chrome NPAPI Support On Final Countdown
Latest Forum Discussions
  1. Hurrican SDL Port
  2. Roadmap to Catalyst 14.10 ?
  3. how to configure module phoromatic ?
  4. PulseAudio 6.0 Is Coming & Other Linux Audio Plans For The Future
  5. Debian Developer Resigns From The Systemd Maintainership Team
  6. Updated and Optimized Ubuntu Free Graphics Drivers
  7. Cant get working Kaveri APU - A10-7850k
  8. Script for Fan Speed Control