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. NVIDIA Tegra X1 Chromebooks Appear Closer, Support Added To Coreboot
  2. Pinos Is For Linux Video What PulseAudio Is For Audio
  3. Crossing 200,000 Benchmark Results Posted On LinuxBenchmarking.com
  4. New Mesa Vec4 Backend For Intel, Supports Their NIR Goals
  5. "PulseVideo" Coming To Complement PulseAudio?
  6. Premium Users Now Can Experience Our New Site
  7. XFS Will Get DAX Support In The Linux 4.2 Kernel
  8. X.Org Server Lands More Mode-Setting/GLAMOR Improvements, But No Sign Of 1.18
  9. Linux Mint 17.2 Officially Released With Cinnamon/MATE Flavors
  10. Fedora For MIPS Is Now Out In Testing, Supports The Creator CI20
Latest Articles & Reviews
  1. How KDE VDG Is Trying To Make Open-Source Software Beautiful
  2. Attempting To Try Out BCache On The Linux 4.1 Kernel
  3. CompuLab's Fitlet Is A Very Tiny, Fanless, Linux PC With AMD A10 Micro
  4. AMD A10-7870K Godavari: RadeonSI Gallium3D vs. Catalyst Linux Drivers
Most Viewed News This Week
  1. Kubuntu 15.10 Could Be The End Of The Road
  2. Linus Is Looking Forward To Merging KDBUS, But Not Convinced By Performance
  3. NVIDIA Starts Supplying Open-Source Hardware Reference Headers
  4. KDBUS Won't Be Pushed Until The Linux 4.3 Kernel
  5. Linux 4.2 Kernel Gets Port To New Processor Architecture
  6. The Staging Pull For Linux 4.2: "Big, Really Big"
  7. The State & Complications Of Porting The Unity Editor To Linux
  8. SteamOS "Brewmaster" Is Valve's New Debian 8.1 Based Version