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

Trying Out AMD's Radeon Gallium3D LLVM Compiler

Michael Larabel

Published on 30 April 2012
Written by Michael Larabel
Page 1 of 2 - 3 Comments

Last week the R600 LLVM compiler was hooked up for AMD's open-source Gallium3D driver. This LLVM shader compiler is important particularly for OpenCL enablement within the open-source Radeon Linux graphics driver, but still there is some ways to go before that code is ready for production use.

Right now the new LLVM compiler for Radeon Gallium3D is not used by default but Mesa must be recompiled with the "--enable-r600-llvm-compiler" build switch for the support to be enabled for this shader compiler.

While OpenCL is the target for this LLVM-based shader compiler, it could potentially be used for OpenGL GLSL shader compilation too. As said by AMD's Tom Stellard (the one who's been working on this R600 back-end) within the forums, "The LLVM backend will be used for OpenCL. It could potentially be used for GLSL as well, but it still needs a fair amount of work to bring it up to par with the current r600g compiler. At the moment there aren't any plans to improve GLSL support in the LLVM backend, but the work could certainly be done if an interested developer (or developers) wanted to do it."

As Phoronix readers were quick to point out in that thread, having this LLVM compiler enabled leads to issues for many shader-based games. These included screenshots were from Xonotic when the R600 LLVM compiler was enabled with many of the textures not working at all.

<< Previous Page
1
Latest Linux Hardware Reviews
  1. AMD's New Athlon/Semprons Give Old Phenom CPUs A Big Run For The Money
  2. 13-Way Low-End GPU Comparison With AMD's AM1 Athlon
  3. ASUS AM1I-A: A Mini-ITX Board For Socketed Kabini APUs
  4. Mini-Box M350: A Simple, Affordable Mini-ITX Case
Latest Linux Articles
  1. How Much Video RAM Is Needed For Catalyst R3 Graphics?
  2. Ubuntu 12.04 LTS vs. 14.04 LTS Cloud Benchmarks
  3. Ubuntu 12.04.4 vs. 13.10 vs. 14.04 LTS Desktop Benchmarks
  4. AMD OpenCL Performance With AM1 Kabini APUs
Latest Linux News
  1. Packard Bell LM85 Now Supported By Coreboot
  2. AmazonBasics External USB 2.0 DVD Writer For Linux
  3. TP-LINK TG-3468: A $12 Linux PCI-E Gigabit Network Adapter
  4. Linux 3.15 Lands Some DRM Graphics Driver Fixes
  5. AMD Is Disabling DPM Support For RV770 GPUs
  6. ReactOS Working On A Community Windows OS
  7. eRacks Keeps Pushing Linux, Open-Source Systems After 15 Years
  8. Borderlands Is Being Considered For Linux
  9. Mesa 10.0 & 10.1 Stable Get Updated
  10. Git 2.0 Test Releases Begin With Many Changes
  11. Wine 1.7.17 Works On Its Task Scheduler, C Run-Time
  12. The Improv ARM Board Still Isn't Shipping; Riding A Dead Horse?
Latest Forum Discussions
  1. The GNOME Foundation Is Running Short On Money
  2. Updated and Optimized Ubuntu Free Graphics Drivers
  3. Catalyst 14.3 Beta
  4. Suggestions about how to make a Radeon HD 7790 work decently?
  5. Radeon 8000M problematic on Linux?
  6. Linux Kernel Developers Fed Up With Ridiculous Bugs In Systemd
  7. After Jack Keane, RuseSoft will briing Ankh 3 to Linux through Desura
  8. Suspected PHP Proxy Issue