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Intel i915 Gallium3D Driver Might Become The Default

Intel

Published on 17 April 2013 12:03 PM EDT
Written by Michael Larabel in Intel
18 Comments

In the discussion about mainlining the new Intel Gallium3D driver for Sandy Bridge and Ivy Bridge processors, the long-standing i915 Gallium3D driver for older Intel hardware was brought out. It turns out that this driver might replace the classic i915 Intel driver as the new default.

Open-source Intel Linux developers really could care less about the i915~i945 generations, especially as they aren't even committing new significant features to Ironlake. However, Google and others have been maintaining this community-based "i915g" driver. The main benefit of this i915 Gallium3D driver over the current official i915 "classic" driver is that due to leveraging LLVM it has faster performance in some scenarios, particularly with this older Intel hardware not having vertex shaders thus needing to do it in software.

Google has advanced this driver a lot and shipped it in their Chromebooks shipping with older i945 graphics. Its performance is decent considering the hardware.

With not much activity going into Intel's i915 driver and the i915g driver providing new features over the original driver, the Gallium3D driver in this case is really the better choice. Developers even brought sRGB textures so the driver could expose OpenGL 2.1 support.

On the Mesa mailing list, David Airlie expressed, "the thing is distros should probably be using i915g at this point over i915..."

Daniel Vetter additionally commented that a small change would be needed for handling old i830/Gen2 support to link to the older Intel classic driver over the Gallium3D driver where this i8xx hardware is unsupported. Chris Wilson this morning now committed a change to the xf86-video-intel driver for changing around this i830/i915 DRI preference so that the Intel "Gen2" graphics will still work with 3D when this Mesa change ultimately happens.

New benchmarks of the i915 Gallium3D driver will likely come soon on Phoronix, but until then, check out Ivy Bridge benchmarks of the new Intel Gallium3D driver.

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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