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

Will OpenGL 3.0 Still Land In Mesa This Year?

Intel

Published on 09 December 2011 10:19 AM EST
Written by Michael Larabel in Intel
4 Comments

Back at XDC2011 Chicago plans were laid by Intel OSTC developers to have OpenGL 3.0 support in Mesa before year's end, but with three weeks left to 2011, will they make this deadline?

The developers working on Mesa within Intel's Open-Source Technology Center have been making steady progress on reaching this OpenGL 3.0 goal in Mesa. The OpenGL 3.0 specification is nearly three years old, but the Mesa/Gallium3D support has lagged behind as invasive infrastructure changes have had to be made, significant GL Shading Language (GLSL) updates, and other changes made. The latest upstream OpenGL specification meanwhile is OpenGL 4.2.

In terms of Mesa hitting OpenGL 3.0 compliance for at least the Intel DRI driver, they are getting very close. Last month the Intel driver managed GLSL 1.30 compliance for "Sandy Bridge" graphics as needed by GL3. Besides the GL Shading Language requirement, in recent weeks they have tackled other OpenGL 3.0 requirements too, but there's still measurable work left to be completed.

OpenGL 3.0 work that's newly published this week are vertex shader texturing support (mail), ARB_depth_buffer_float handling (mail), transform feedback (mail), and prep work for GLX_ARB_create_context support (mail). There's also been various other changes to Mesa in recent days. In regards to most of this Intel OpenGL 3.0 work, it's all focused on Sandy Bridge and future Ivy Bridge graphics hardware.

In terms of what's left, that's reflected by the DRI WorkQueue Wiki page. High priority OpenGL 3.0 action items for Intel that are still outstanding include implementing pass-through GS shader programs, rasterizer discard, verifying the buffer overflow behavior, implementing PRIMITIVES_GENERATED and TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN queries, a kernel interface for setting rregisters, correct pointer updates on begin/end/pause/resume, and various other items. There's also a fair amount of testing and verification work needed to ensure the OpenGL 3.0 support actually works and is reliable. Plus there's many medium and lower priority work items too.

Will OpenGL 3.0 Still Land In Mesa This Year?
Jesse Barnes, Keith Packard, and Ian Romanick of Intel at XDC2011.

Not all of these outstanding action items are joined by estimated days to completion, but based upon what's left, it's not too likely there will be full OpenGL 3.0 support in place for Intel Sandy Bridge on Mesa by the end of the calendar year. It looks like they might be ready in January or so, and they're making much progress, but there's just three weeks left to the year. Falling in the next three weeks is also Christmas and New Years.

Within the Mesa Git tree is also the OpenGL status documentation that provides a more concise overview of the support level. What's left to be completed in GL3.txt is non-normalized integer texture/frame-buffer formats, transform feedback (GL_EXT_transform_feedback extension), depth format cube textures, and GLX_ARB_create_context.

Mesa 7.12 is set to be branched from Git master in January, but if the GL3.0 goal is near, Intel's Ian Romanick has mentioned the possibility of slightly delaying this next release. If the support is ready, it will be released as Mesa 8.0.

Stay tuned.

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. Trying The Configurable 45 Watt TDP With AMD's A10-7800 / A6-7400K
  2. Sumo's Omni Gets Reloaded
  3. AMD A10-7800 & A6-7400K APUs Run Great On Linux
  4. Radeon Gallium3D Is Running Increasingly Well Against AMD's Catalyst Driver
Latest Linux Articles
  1. CPUFreq Scaling Tests With AMD's Kaveri On Linux 3.16
  2. Enabling HyperZ Is Still An Easy Way For Faster RadeonSI Performance
  3. AMD Kaveri: Catalyst vs. RadeonSI Gallium3D On Linux
  4. Linux OpenCL Performance With The Newest AMD & NVIDIA Drivers
Latest Linux News
  1. Systemd 216 Piles On More Features, Aims For New User-Space VT
  2. Mesa 10.2.6 Has Plenty Of OpenGL Driver Bug Fixes
  3. Wasteland 2 Gets An Official Release Date
  4. Dead Island For Linux Appears Imminent
  5. LXQt 0.8 Is Being Released Soon
  6. Linux 3.17 Lands Memfd, A KDBUS Prerequisite
  7. Humble Jumbo Bundle 2 Shafts Linux Gamers
  8. Ubuntu 14.10's Feature Freeze Is This Wednesday
  9. New VM Software Claims To Be 4.5x Faster Than QEMU
  10. Kpatch Gets Exposure This Week, kGraft Misses Out
Latest Forum Discussions
  1. Dead Island for Linux (?)
  2. Updated and Optimized Ubuntu Free Graphics Drivers
  3. AMD Offers Mantle For OpenGL-Next, Pushes Mantle To Workstations
  4. The dangers of Linux kernel development
  5. Next-Gen OpenGL To Be Announced Next Month
  6. OpenGL 4.5 Released With New Features
  7. Updated graphics drivers for Ubuntu 12.04 Precise LTS
  8. Builder: A New Development IDE Being Built For GNOME