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. Scythe Mugen MAX
  2. Intel Core i7 5960X Haswell-E On Linux
  3. Intel 80GB 530 Series M.2 SSD On Linux
  4. With A New Motherboard, The Core i7 5960X Haswell-E Lights Up
Latest Linux Articles
  1. RadeonSI GLAMOR Benchmarks With X.Org Server 1.16
  2. RadeonSI Gallium3D vs. Catalyst At 4K UHD On Linux
  3. MSAA RadeonSI Gallium3D Performance Preview
  4. Intel Core i7 5960X CPU Core Scaling Under Linux
Latest Linux News
  1. SNA & UXA Intel Benchmarks With X.Org Server 1.16
  2. Graphics Driver Changes Coming In The Linux 3.18 Kernel
  3. Tropico 5 Being Released For Linux Gamers This Week
  4. Eclipse IDE Starts Firing Up On Wayland's Weston
  5. OpenSUSE Announcement On SUSE's Recent Merger
  6. Valve Begins Publicly Tracking AMD Catalyst Linux Issues
  7. Digia Qt Spinoff Is Called "The Qt Company"
  8. GNOME 3.14 Makes More Progress In Running Natively On Wayland
  9. Minix 3.3 Released With Cortex-A8 ARM Support, NetBSD Userland Compatibility
  10. More Intel DRM Changes Queued For Linux 3.18, Including Old i830M Fixes
Latest Forum Discussions
  1. Best Radeon for a Power Mac G5?
  2. New Group Calls For Boycotting Systemd
  3. Hd 6850
  4. New stress testing utility for GPU's
  5. Updated and Optimized Ubuntu Free Graphics Drivers
  6. support for first generation UVD blocks (RV6xx, RS780, RS880 and RV790)
  7. Nvidia joins the ranks of Apple and Microsoft
  8. nv and xorg.conf under Debian PPC