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

Intel Mesa Patches For ARB_texture_multisample

Mesa

Published on 29 December 2012 08:17 AM EST
Written by Michael Larabel in Mesa
Comment On This Article

Patches surfaced on the Mesa mailing list on Saturday morning for supporting the OpenGL ARB_texture_multisample extension within core Mesa and the Intel i965 DRI driver.

A set of 26 patches against Mesa were needed for this initial ARB_texture_multisample implementation. The only driver implementing the support with these patches is the Intel DRI driver and even there it's only on right now for Intel Sandy Bridge "Gen6" hardware. For the newer Ivy Bridge "Gen7", there's still some IVB-specific things that aren't done or properly tested. Even for Sandy Bridge with these patches, there's some HiZ interactions that are likely wrong along with some other likely issues.

The GL_ARB_texture_multisample extension is part of the OpenGL 3.2 specification. Per 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 these patches can be cleaned up soon for the Intel driver, expanded eventually to support the Nouveau and Radeon Gallium3D drivers, and be merged into mainline Mesa ahead of the next Mesa 9.1/10.0 release. The current set of 26 patches can be found in this mailing list thread.

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. A Walkthrough Of The New 32 System Open-Source Linux Benchmarking Test Farm
  2. Habey MITX-6771: Mini-ITX Board With Quad-Core J1900 Bay Trail
  3. OCZ Vector 150 SSD On Linux
  4. Noctua i4 CPU Cooler: Great For Cooling High-End LGA-2011v3 CPUs
Latest Linux Articles
  1. AMD Kaveri: Open-Source Radeon Gallium3D vs. Catalyst 14.12 Omega Driver
  2. 12-Way AMD Catalyst 14.12 vs. NVIDIA 346 Series Linux GPU Comparison
  3. AMD Catalyst 14.12 Omega Driver Brings Mixed Results For Linux Users
  4. 6-Way Winter 2014 Linux Distribution Comparison
Latest Linux News
  1. Jolla's Sailfish OS Update 10 Is Now Available
  2. HP To Launch Linux++ Operating System Next Year
  3. Civilization: Beyond Earth Launches For Linux
  4. NIR Has Been Revised As A New IR For Mesa
  5. New 64-bit Linux Kernel Vulnerabilities Disclosed This Week
  6. PostgreSQL 9.4 Brings JSONB & Many Other New Features
  7. That Nasty Linux Kernel Lockup Bug Is Still Unresolved
  8. KDE's Krita Loses Its Main Backer
  9. Inline Data Support Comes To CephFS With Linux 3.19
  10. VC4 Gallium3D Adds DMA-BUF Support, Yields Working DRI3
Latest Forum Discussions
  1. Bench specific mount point
  2. XLennart: A Game For Systemd Haters With Nothing Better To Do
  3. Tool for measuring FPS in games
  4. Need some hand holding with upgrading xserver
  5. Ubuntu Developers Still Thinking What To Do About Adobe Flash Support
  6. Microsoft buying Mojang
  7. Updated and Optimized Ubuntu Free Graphics Drivers
  8. Premium subscription "login" times out much faster than forum