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 Linux Hardware Reviews
  1. Intel Launches The Core i7 5960X, Mighty Powerful Haswell-E CPUs
  2. AMD Radeon R9 290: Gallium3D vs. Catalyst Drivers
  3. AMD Radeon R9 290 Open-Source Driver Works, But Has A Ways To Go
  4. Trying The Configurable 45 Watt TDP With AMD's A10-7800 / A6-7400K
Latest Linux Articles
  1. Testing For The Latest Linux Kernel Power Regression
  2. The Most Energy Efficient Radeon GPU For AMD Linux Gaming
  3. 20-Way Radeon Comparison With Open-Source Graphics For Steam On Linux Gaming
  4. Preview: OS X 10.10 Yosemite vs. Ubuntu Linux GPU Performance
Latest Linux News
  1. A New AMD Catalyst Linux Driver Unofficially Surfaces
  2. LibreOffice Ported To 64-bit ARM (AArch64)
  3. Enlightenment E19 RC3 Shows Off The New Wayland Compositor
  4. Metro Redux Is Going To Require OpenGL 4.x On Linux
  5. Jailhouse v0.1 Released As A Basic Hypervisor For Linux
  6. Google's Chromebook "Samus" Now Supported By Coreboot
  7. Chrome 38 Now In Beta With Exciting Advancements
  8. Ubuntu's Utopic Unicorn 14.10 Beta 1 Released
  9. Genode OS 14.08 Has New GUI Architecture, Pluggable VFS
  10. Another Intel Linux Power Regression Is Being Investigated
Latest Forum Discussions
  1. Catalyst 14.201.1008
  2. Btrfs Gets Talked Up, Googler Encourages You To Try Btrfs
  3. Users defect to Linux as OpenBSD removes Lynx from base system
  4. Updated and Optimized Ubuntu Free Graphics Drivers
  5. Canonical Joined The Khronos Group To Help Mir/Wayland Drivers
  6. Radeon HD5670 and Ubuntu 14.04
  7. AMD Releases UVD Video Decode Support For R600 GPUs
  8. Best Radeon for a Power Mac G5?