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

OpenGL Transform Feedback For LLVMpipe

Mesa

Published on 05 December 2012 01:49 PM EST
Written by Michael Larabel in Mesa
5 Comments

An initial patch for review has been published by David Airlie that implements OpenGL Transform Feedback support for the LLVMpipe driver.

The LLVMpipe Gallium3D software-based driver hasn't reached OpenGL 3.0 compliance yet but it's slowly getting there. LLVMpipe is now in the process of picking up EXT_transform_feedback support.

OpenGL Transform Feedback adds in the capability of altering the rendering pipeline to allow for primitives processed by Vertex/Geometry Shaders to be written to buffer objects. By writing it to buffer objects, the post-transform render state of an object can be saved so that it can be re-submitted multiple times.

Transform Feedback was added to the core OpenGL specification in OpenGL 3.0 and it remains as of the latest OpenGL 4.3 specification with EXT_transform_feedback. Many of the other open-source Mesa/Gallium3D drivers have had GL3 transform feedback support for several months.

David mentioned when publishing the initial patch that the LLVMpipe EXT_transform_feedback support is currently passing 115 of 130 Piglit tests.

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. Mesa Git Yields Performance Improvements For Newer AMD GPUs
  2. Apple OS X 10.10 vs. Ubuntu 14.10 Performance
  3. Mesa 10.5-devel Brings Some Intel Haswell HD Graphics Changes Over Mesa 10.3
  4. NVIDIA vs. Nouveau Drivers With Linux 3.18 + Mesa 10.4-devel
Latest Linux News
  1. Quantum OS Aims For A Linux Desktop With QML, Wayland & Material Design
  2. New Open-Source, Linux Benchmarks To Feast On
  3. FreeBSD Plans For The Next Ten Years
  4. Qt 5.4 Planned For Release On 9 December
  5. Meizu's Ubuntu Phone Not Expected Until Early Next Year
  6. DragonFlyBSD 4.0 Drops i386 Support, Improves Graphics
  7. Expensive "Free/Libre Software Laptop" Uses A NVIDIA GPU
  8. QEMU 2.2-rc3 Released, Final Release Pushed Back By Couple Days
  9. 64-bit ARM FreeBSD Support Is Taking Shape
  10. GCW Zero Starts Seeing New Game Releases
Latest Forum Discussions
  1. Updated and Optimized Ubuntu Free Graphics Drivers
  2. Hurrican SDL Port
  3. Roadmap to Catalyst 14.10 ?
  4. how to configure module phoromatic ?
  5. PulseAudio 6.0 Is Coming & Other Linux Audio Plans For The Future
  6. Debian Developer Resigns From The Systemd Maintainership Team
  7. Cant get working Kaveri APU - A10-7850k
  8. Script for Fan Speed Control