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 Benchmarking Platform
Phoromatic Test Orchestration

Nouveau Gallium3D Now Handles ARB_viewport_array

Nouveau

Published on 13 February 2014 12:10 AM EST
Written by Michael Larabel in Nouveau
Add A Comment

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 News
  1. Linux Benchmarks Of Intel's Atom Z3735F On The Compute Stick
  2. Fedora's Security Team Continues Closing Old Vulnerabilities
  3. HAMMER2 File-System Now Uses LZ4 Compression By Default
  4. HiSense Chromebook Benchmarks When Running Ubuntu Linux
  5. Mandriva Linux Was Allegedly Brought Down By Employee Lawsuits
  6. GNOME 3.17.2 Is Released As The Latest Look Towards GNOME 3.18
  7. Phoronix Turns 11 Years Old Next Week: How Should We Celebrate?
  8. Ubuntu Community Council Reaffirms Its Decision Against Kubuntu's Leader
  9. Future Plans For Changing Fedora's Installer
  10. Confusion Mounts Over Wayland's Actual License
Latest Articles & Reviews
  1. Radeon OpenGL Benchmarks On Fedora 22
  2. Btrfs RAID 0/1/5/6/10 Five-Disk Benchmarks On Linux 4.1
  3. Opening The Gates To Our Daily Open-Source Linux Benchmark Results
  4. The Latest Features For Linux Performance Management + Benchmark Monitoring
Most Viewed News This Week
  1. NVIDIA's Proprietary Driver Is Moving Closer With Kernel Mode-Setting
  2. Features Added To Mesa 10.6 For Open-Source GPU Drivers
  3. Friction Building Around An Ubuntu Community Council Decision
  4. Ubuntu's LXD vs. KVM For The Linux Cloud
  5. The Latest Linux Kernel Git Code Fixes The EXT4 RAID0 Corruption Problem
  6. Russia's Baikal Chips End Up Going For A MIPS CPU
  7. The CompuLab Fitlet Is A Neat Little Linux PC With AMD SoC
  8. Linux 4.1-rc5 Kernel Released