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

Nouveau Gallium3D Now Handles ARB_viewport_array

Nouveau

Published on 13 February 2014 12:10 AM EST
Written by Michael Larabel in Nouveau
Comment On This Article

It was just earlier this week I wrote about R600 Gallium3D supporting GL_ARB_viewport_array, an extension mandated by the OpenGL 4.1 specification; the Nouveau Gallium3D driver now also supports this extension.

Ilia Mirkin has managed the work to enable support for the ARB_viewport_array OpenGL extension within the "NV50" Gallium3D driver. This extension allows for multiple viewports and as explained by the OpenGL.org registry, "This extension enhances OpenGL by providing a mechanism to expose multiple viewports. Each viewport is specified as a rectangle. The destination viewport may be selected per-primitive by the geometry shader. This allows the Geometry Shader to produce different versions of primitives destined for separate viewport rectangles on the same surface. Additionally, when combined with multiple framebuffer attachments, it allows a different viewport rectangle to be selected for each. This extension also exposes a separate scissor rectangle for each viewport. Finally, the viewport bounds are now floating point quantities allowing fractional pixel offsets to be applied during the viewport transform."

Last month this GL extension was enabled in core Mesa and Intel's driver and since then has sprouted up in Radeon Gallium3D and now Nouveau Gallium3D drivers. There's still lots of OpenGL 4.x support needed but at least these open-source Linux graphics driver developers continue working in the right direction.

The change happened with this Git commit and will be part of the Mesa 10.2 release in a few months time.

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 Articles & Reviews
  1. Intel Broadwell: GCC 4.9 vs. LLVM Clang 3.5 Compiler Benchmarks
  2. Ubuntu vs. Fedora Linux On Lenovo's X1 Carbon With Core i7 Broadwell
  3. Ubuntu 15.04 Is The Easy Path To Better Performance On Intel Broadwell
  4. NVIDIA's Latest Maxwell Line-Up Against AMD With Catalyst On Linux
  5. Preliminary Tests Of Intel Sandy Bridge & Ivy Bridge vs. Broadwell
  6. AMD FX-8320E Performance On Linux
Latest Linux News
  1. Librem 15 Linux Laptop Set To Close At Around $400k USD
  2. Virtual GEM To Increase Mesa's Software Rasterizer Performance
  3. Open Lunchbox: Yet Another Open-Source Laptop Attempt
  4. Wayland/Weston 1.7 Release Candidate
  5. Bugzilla 5.0 Is Coming Soon With New Features
  6. Linux Benchmarking... Even Faster & A Very Interesting February
  7. Does VirtualBox VM Have Much A Future Left?
  8. HAMMER2 File-System Is Still Slowly Coming Together
  9. The Better Looking Window Decorations For GNOME 3.16
  10. Libinput 0.9 Adds Support For Hovering Fingers On Touchpads
Most Viewed News This Week
  1. PlayStation 4 System Compiler Support Landing In LLVM
  2. LibreOffice 4.4 Is Coming Soon With New Features
  3. Linux "GHOST" Vulnerability Hits Glibc Systems
  4. Broadwell Linux Ultrabook Running MUCH Cooler Than Haswell
  5. LZHAM 1.0 Lossless Data Compression Codec Released
  6. Linux Users Upset By Chromium's Busted HiDPI Support
  7. Vivaldi: A New Chromium-Powered, Multi-Platform Browser
  8. LibreOffice 4.4 Released With Better OOXML Support, UI Improvements