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

Gallium3D/R600 Support For Texture Multisample

Mesa

Published on 13 January 2013 11:00 AM EST
Written by Michael Larabel in Mesa
Comment On This Article

Last month I wrote about Mesa support for the ARB_texture_multisample. At the time the support was limited to enabling this OpenGL extension for the Intel Mesa DRI driver with Gallium3D and its hardware drivers going unsupported. Fortunately, the OpenGL texture multi-sample support is now heading to Gallium3D and is close to being in a good state for the AMD "R600g" driver.

David Airlie shared on Sunday morning his new "gallium-texture-multisample" Mesa branch that works out the Gallium3D/R600 support for this OpenGL feature. The GL_ARB_texture_multisample extension is part of the OpenGL 3.2 specification. From the OpenGL.org registry, this NVIDIA-developed extension is described as:
This extension provides support for two new types of "multisample textures" - two-dimensional and two-dimensional array - as well as mechanisms to fetch a specific sample from such a texture in a shader, and to attach such textures to FBOs for rendering. This extension also includes the following functionality, first described in NV_explicit_multisample:

* A query in the API to query the location of samples within the pixel
* An explicit control for the multisample sample mask to augment the control provided by SampleCoverage
Hopefully this GL_ARB_texture_multisample work will be ready for merging into the forthcoming release of Mesa 9.1.

Initial feedback on the R600 texture multi-sample code can be found on the Mesa developers' mailing list. The Mesa branch with this support can be found on FreeDesktop.org.

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. Btrfs On 4 x Intel SSDs In RAID 0/1/5/6/10
  2. AMD Radeon R9 290 On Ubuntu 14.10: RadeonSI Gallium3D vs. Catalyst
  3. MSI X99S SLI PLUS On Linux
  4. NVIDIA GeForce GTX 970 Offers Great Linux Performance
Latest Linux Articles
  1. Windows 8.1 vs. Ubuntu 14.10 With Intel HD Graphics
  2. 6-Way Ubuntu 14.10 Radeon Gallium3D vs. Catalyst Driver Comparison
  3. NVIDIA vs. Nouveau Drivers On Ubuntu 14.10
  4. Ubuntu 14.10 Offers AMD Radeon Driver Performance Improvements
Latest Linux News
  1. SIMD For JavaScript Continues Coming Along
  2. GNOME 3.15.1 Released
  3. Red Hat Software Collections 1.2 Adds GCC 4.9, Nginx 1.6
  4. GLAMOR Acceleration Continues To Be Cleaned Up
  5. Russia's Yandex Web Browser Finally Released For Linux
  6. Linux Kernel Finally Being Optimized For SSHDs
  7. GPU Profiling Support Lands In Mozilla Firefox
  8. Kubuntu 15.04 Will Use KDE's Plasma 5 By Default
  9. KDBUS Submitted For Review To The Mainline Linux Kernel
  10. An Intel-Based Ubuntu Touch Tablet Is Planning To Launch Soon
Latest Forum Discussions
  1. Is foolish currently develop in machine code, hexadecimal and assembly?
  2. How to get rid of Linux
  3. Reducing The CPU Usage In Mesa To Improve Performance
  4. Help diagnosing problems with a Readon HD 4670 on Mesa 10.3.2-1
  5. Advertisements On Phoronix
  6. nv and xorg.conf under Debian PPC
  7. Looking for a Open-Source AMD experienced Linux mentor
  8. Bad perfomance in gaming