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 Benchmarking Platform
Phoromatic Test Orchestration

Running Qt/KDE Atop An OpenGL Stack

Free Software

Published on 13 August 2009 11:49 PM EDT
Written by Michael Larabel in Free Software
50 Comments

Zack Rusin, the well-known X.Org and KDE hacker, has written a new blog post concerning the Qt tool-kit and the different options that are available when it comes to rendering graphics. Qt currently can target a pure CPU raster engine, using X11 with the X Render extension for providing some GPU-assisted acceleration, or using an OpenGL engine. The renderer that is used by Qt depends upon the platform, what portions of the Qt API are being used by a given program, and whether the graphics system was overrode when starting the program.

In Zack's blog post, entitled 2D in KDE, he describes at length these three graphics rendering engines for Qt. Obviously, using the CPU raster engine is the most taxing while using X Render is better, but using OpenGL is the best, generally. Zack concludes his lengthy blog post with "the quicker we get the rendering stack to work on top of OpenGL the better off we'll be."

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 Articles & Reviews
  1. Radeon Linux Benchmarks: Catalyst 15.3 Beta vs. Linux 4.0 + Mesa 10.6-devel
  2. Trying Out The Modern Linux Desktops With 4 Monitors + AMD/NVIDIA Graphics
  3. Turning A Basement Into A Big Linux Server Room
  4. NVIDIA's $1000+ GeForce GTX TITAN X Delivers Maximum Linux Performance
  5. OS X 10.10 vs. Ubuntu 15.04 vs. Fedora 21 Tests: Linux Sweeps The Board
  6. The New Place Where Linux Code Is Constantly Being Benchmarked
Latest Linux News
  1. Debian 8.0 Jessie Gets A Release Date
  2. Firefox 37 Coming Today With Heartbeat, HTTPS Bing
  3. OpenIndiana 2015.03 Updates Its Solaris/Illumos Environment
  4. GNOME 3.16 SDK Runtime Now Available
  5. Initial Intel Braxton Support Might Come To Linux 4.1
  6. Why KDE's KWin Doesn't Integrate Weston/QtCompositor For Wayland Support
  7. Clang Now Supports Targeting The NaCl OS
  8. PC-BSD Updates Its Lumina Desktop (v0.8.3)
  9. Fedora 22 Alpha Now Available For AArch64 & PowerPC64
  10. Systemd Developers Did NOT Fork The Linux Kernel
Most Viewed News This Week
  1. The Big Features Of The Linux 4.0 Kernel
  2. Improved OpenCL Support For Blender's Cycles Renderer
  3. Open-Source Driver Fans Will Love NVIDIA's New OpenGL Demo
  4. Allwinner Continues Jerking Around The Open-Source Community
  5. GNOME 3.16 Released: It's Their Best Release Yet
  6. Ubuntu 15.04 Final Beta Released
  7. Nuclide: Facebook's New Unified IDE
  8. LibreOffice Online: A Cloud Version Of LibreOffice