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. AMD Radeon R9 290: Gallium3D vs. Catalyst Drivers
  2. AMD Radeon R9 290 Open-Source Driver Works, But Has A Ways To Go
  3. Trying The Configurable 45 Watt TDP With AMD's A10-7800 / A6-7400K
  4. Sumo's Omni Gets Reloaded
Latest Linux Articles
  1. 20-Way Radeon Comparison With Open-Source Graphics For Steam On Linux Gaming
  2. Preview: OS X 10.10 Yosemite vs. Ubuntu Linux GPU Performance
  3. Radeon Graphics Yield Mixed Results With Linux 3.17 Kernel
  4. AMD's RadeonSI Driver Sped Up A Lot This Summer
Latest Linux News
  1. Nouveau On Oibaf PPA Is Back To Running Well
  2. Metro 2033 Redux Will Hopefully Hit Linux Real Soon
  3. New Virtual Monitor Software Might End Up On Linux
  4. Company of Heroes 2 Might Be Coming Out For Linux
  5. NIR Still Being Discussed For Mesa, LLVM Gets Brought Up Again
  6. Plasma Active Is Mostly Ported To KDE Frameworks 5
  7. Google Chrome 37 Brings Many Security Fixes
  8. MenuetOS Updated With SMP Threads & Onscreen Keyboard
  9. Mesa Has A New Release Manager
  10. Enlightenment E19 Lands Its New Wayland Compositor Code
Latest Forum Discussions
  1. Canonical Joined The Khronos Group To Help Mir/Wayland Drivers
  2. AMD Releases UVD Video Decode Support For R600 GPUs
  3. Announcing radeontop, a tool for viewing the GPU usage
  4. Updated and Optimized Ubuntu Free Graphics Drivers
  5. [DB] BIOS - ACPI - data collecting
  6. It's Now Possible To Play Netflix Natively On Linux Without Wine Plug-Ins
  7. Users defect to Linux as OpenBSD removes Lynx from base system
  8. Chinese People Try To Patent Wine On ARM