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Intel Working On OpenGL Robustness Support

Intel

Published on 14 March 2013 06:25 PM EDT
Written by Michael Larabel in Intel
Comment On This Article

Mika Kuoppala of Intel OTC has published a set of 16 i915 Intel DRM kernel driver patches as they work to enable ARB_robustness support for their open-source Linux graphics driver.

The GL_ARB_robustness extension is about robustness (obviously) and greater security for OpenGL contexts. GL_ARB_robustness makes it easier for applications/games to recover from hardware errors (e.g. GPU video memory problems) as well as software/driver problems. For those interested in the full details on the OpenGL robustness support, read the full specification at OpenGL.org.

There's been some test cases in the past for Intel/Mesa with ARB_robustness, but no full implementation for the open-source GPU drivers. Mika Kuoppala, one of the Finnish developers formerly at Nokia until last year that then joined Intel's Open-Source Technology Center, published his latest "ARB robustness enablers" on Thursday.

These kernel patches are about changes needed so that user-space (i.e. Mesa) can query about whether a context has been lost, among other work. The re-worked patch set against the i915 DRM driver cleans up some code, gives three seconds to declare a hang, semaphore kicking for hung rings, and a test case for the new exposed kernel interfaces.

Assuming the interface to user-space looks good along with the other changes, this is a potential merge candidate for the Linux 3.10 kernel and is to be followed by Mesa support work to take advantage of the new Intel DRM driver capabilities.

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 .
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