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

OSMesa State Tracker + LLVMpipe Support Published

Mesa

Published on 11 March 2013 09:40 PM EDT
Written by Michael Larabel in Mesa
5 Comments

Brian Paul has published an initial OSMesa state tracker along with OSMesa support for the LLVMpipe and Softpipe drivers.

OSMesa is the API exposing Mesa's off-screen rendering capabilities. The off-screen rendering infrastructure isn't dependent upon any specific operating system windowing system, or graphics hardware. OSMesa rendering is simply done in user-space with main system memory. An example use-case all along for OSMesa has been "to use Mesa as an off-line, batch-style renderer."

Up until now OSMesa has just been exposed through some simple demos bundled within the Mesa source tree, but now Brian Paul has made OSMesa into a Gallium3D state tracker that can be used by LLVMpipe and Softpipe. So in effect it's the Gallium3D software fallback drivers being able to do off-screen rendering to this OS-independent windowing-system-independent hardware-independent interface.

The Gallium3D OSMesa state tracker is just over 800 lines of code plus there's a few other Mesa patches to make this work by Brain turn out nicely. Brian acknowledges though, "The OSMesa interface is pretty old and ugly but I think most OSMesa users would rather not have to port their apps to a new interface."

Those interested in seeing the OSMesa Gallium3D patches until being merged can find them on the mesa-dev list.

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. Trying The Configurable 45 Watt TDP With AMD's A10-7800 / A6-7400K
  2. Sumo's Omni Gets Reloaded
  3. AMD A10-7800 & A6-7400K APUs Run Great On Linux
  4. Radeon Gallium3D Is Running Increasingly Well Against AMD's Catalyst Driver
Latest Linux Articles
  1. AMD's RadeonSI Driver Sped Up A Lot This Summer
  2. Intel's Latest Linux Graphics Code Competes Against OS X 10.9
  3. Intel Sandy Bridge Gets A Surprise Boost From Linux 3.17
  4. Open-Source Radeon Graphics Have Some Improvements On Linux 3.17
Latest Linux News
  1. A New First-Person Mystery Game Might Be Coming To Linux
  2. Patch By Patch, LLVM Clang Gets Better At Building The Linux Kernel
  3. VC4 Gallium3D Driver Now Handles X With GLAMOR
  4. Opera 25 Development Release For Linux
  5. Steam Now Supports VA-API For In-Home Game Streaming
  6. GNOME 3.14 Beta Released
  7. Mesa 10.3 Branched & RC1 Released, Mesa 10.4 On Master
  8. Intel Sandy Bridge Gains On Linux 3.17 Extend Beyond Graphics
  9. LinuxCon: What's Going On With Fedora.Next
  10. Canonical Joined The Khronos Group To Help Mir/Wayland Drivers
Latest Forum Discussions
  1. Btrfs Gets Talked Up, Googler Encourages You To Try Btrfs
  2. Systemd 216 Piles On More Features, Aims For New User-Space VT
  3. American Citizens running AMOK for food stamps
  4. What Linux Distribution Should Be Benchmarked The Most?
  5. OSS radeon driver for A10-7850K (Kaveri)
  6. Company I work for is looking to contribute to Open Source projects... but wrongly?
  7. Microsoft vs. Campaign
  8. Updated and Optimized Ubuntu Free Graphics Drivers