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 Articles & Reviews
  1. OS X 10.10 vs. Ubuntu 15.04 vs. Fedora 21 Tests: Linux Sweeps The Board
  2. The New Place Where Linux Code Is Constantly Being Benchmarked
  3. 18-GPU NVIDIA/AMD Linux Comparison Of BioShock: Infinite
  4. Phoronix Test Suite 5.6 Adds New Phoromatic Enterprise Benchmarking Features
  5. OpenGL Threaded Optimizations Responsible For NVIDIA's Faster Performance?
  6. Big Graphics Card Comparison Of Metro Redux Games On Linux
Latest Linux News
  1. Git 2.4.0-rc0 Does A Ton Of Polishing
  2. The Most Common, Annoying Issue When Benchmarking Ubuntu On Many Systems
  3. Mesa Is At Nearly 1,500 Commits This Year
  4. Gestures & Other GTK3 Features For LibreOffice
  5. It's Now Easier To Try PHP 7 On Fedora & RHEL
  6. BQ Is Cleaning Up Their Aquaris E4.5 Ubuntu Kernel
  7. Allwinner Continues Jerking Around The Open-Source Community
  8. NVIDIA Linux 349.12 Beta Has Improved G-SYNC & VDPAU Features
  9. Canonical Just Made It Even Easier To Benchmark Ubuntu Linux In The Cloud
  10. NVIDIA GeForce GTX TITAN X Linux Testing Time
Most Viewed News This Week
  1. Introducing The Library Operating System For Linux
  2. AMD Is Hiring Two More Open-Source Linux GPU Driver Developers
  3. New SecureBoot Concerns Arise With Windows 10
  4. GNOME Shell & Mutter 3.16.0 Released
  5. GNU Nano 2.4.0 Brings Complete Undo System, Linter Support & More
  6. Systemd Change Allows For Stateless Systems With Tmpfs
  7. GCC 5 Compiler Is Getting Close To Being Released
  8. Chromebooks Powered By The MIPS Pistachio, Linux Support Evolving