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

Shader Optimizations Revived For R600 Gallium3D

Mesa

Published on 14 February 2013 02:25 AM EST
Written by Michael Larabel in Mesa
11 Comments

Vadim Girlin has revived his "shader optimization" branch of Mesa that focuses upon improvements to the AMD R600 Gallium3D graphics driver.

Going back to late 2011, Girlin was working on shader optimizations for R600g and he finally found time to revive his work on this code. He said on Wednesday that the code is now mostly done, correct, and featureful -- at least for the Radeon HD 5000 "Evergreen" series. It's still a "work in progress" for the efficiency of generateds shader code and the back-end itself, but he's becoming quite happy with the progress.

Vadim Girlin spent time in 2012 studying the R600 GPU LLVM back-end too, but he decided that it would be easier to implement all of his desired functionality into his own implementation.

In his new mailing list post, Vadim writes, "Currently the branch has no regressions with piglit's quick-driver.tests on evergreen (it doesn't rely on the fallback to unoptimized code for the shaders with relative addressing and other cases unlike the previous branch), and so far I don't see any rendering issues with the apps that I used for testing - Lightsmark 2008, Unigine Heaven 3.0 and some others. There are also some performance improvements with the gpu-bound apps."

The code in its current form can be found in this Mesa branch. In his mailing list post, Vadim provides a lot more detail about the current work and features surrounding this shader optimization code for the open-source R600g driver. It's not known what will ultimately happen of this R600g code, but it's worth checking out. Right now Vadim is seeking the comments and review of other open-source Radeon Linux driver developers.

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 News
  1. Mesa Git OpenGL Tests With Intel Ivy Bridge Graphics
  2. Blender 2.75 Allows For AMD OpenCL Support
  3. GNOME's Mutter 3.17.2 Adds X11/Wayland Clipboard Interoperation
  4. Wayland 1.8 RC2 Arrives Along With New Weston Compositor Release
  5. LLVM 3.7 Is Planned For A Late August Release
  6. The OpenGL ES 3.1 Foundation Is Being Laid In Mesa
  7. There Are 140k Benchmark Results So Far On LinuxBenchmarking.com
  8. LLVM 3.6.1 Brings R600 & MIPS Fixes
  9. Friction Building Around An Ubuntu Community Council Decision
  10. Bye Bye Mandriva, She's Being Liquidated
Latest Articles & Reviews
  1. Opening The Gates To Our Daily Open-Source Linux Benchmark Results
  2. The Latest Features For Linux Performance Management + Benchmark Monitoring
  3. Noctua NH-U12DX i4 + NF-F12
  4. Btrfs RAID 0/1 Benchmarks On The Linux 4.1 Kernel
Most Viewed News This Week
  1. The Linux 4.0 EXT4 RAID Corruption Bug Has Been Uncovered
  2. NVIDIA's Proprietary Driver Is Moving Closer With Kernel Mode-Setting
  3. Systemd 220 Has Finally Been Released
  4. Microsoft Open-Sources The Windows Communication Foundation
  5. Zapcc Claims To Be A "Much Faster C++ Compiler"
  6. LibreOffice 5.0 Beta 1 Released
  7. Another HTTPS Vulnerability Rattles The Internet
  8. LibreOffice 5.0 Open-Source Office Suite Has Been Branched