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. Trying The Configurable 45 Watt TDP With AMD's A10-7800 / A6-7400K
  2. Sumo's Omni Gets Reloaded
  3. AMD A10-7800 & A6-7400K APUs Run Great On Linux
  4. Radeon Gallium3D Is Running Increasingly Well Against AMD's Catalyst Driver
Latest Linux Articles
  1. CPUFreq Scaling Tests With AMD's Kaveri On Linux 3.16
  2. Enabling HyperZ Is Still An Easy Way For Faster RadeonSI Performance
  3. AMD Kaveri: Catalyst vs. RadeonSI Gallium3D On Linux
  4. Linux OpenCL Performance With The Newest AMD & NVIDIA Drivers
Latest Linux News
  1. Proposed: A Tainted Performance State For The Linux Kernel
  2. Systemd 216 Piles On More Features, Aims For New User-Space VT
  3. Mesa 10.2.6 Has Plenty Of OpenGL Driver Bug Fixes
  4. Wasteland 2 Gets An Official Release Date
  5. Dead Island For Linux Appears Imminent
  6. LXQt 0.8 Is Being Released Soon
  7. Linux 3.17 Lands Memfd, A KDBUS Prerequisite
  8. Humble Jumbo Bundle 2 Shafts Linux Gamers
  9. Ubuntu 14.10's Feature Freeze Is This Wednesday
  10. New VM Software Claims To Be 4.5x Faster Than QEMU
Latest Forum Discussions
  1. Remote gui not accessible in Phoronix Test Suite 5.2
  2. The dangers of Linux kernel development
  3. Dead Island for Linux (?)
  4. Updated and Optimized Ubuntu Free Graphics Drivers
  5. AMD Offers Mantle For OpenGL-Next, Pushes Mantle To Workstations
  6. Next-Gen OpenGL To Be Announced Next Month
  7. OpenGL 4.5 Released With New Features
  8. Updated graphics drivers for Ubuntu 12.04 Precise LTS