Intel Goes Ahead & Drops i915 Driver From OpenGL 2.1 To 1.4 By Default
Written by Michael Larabel in Intel on 15 February 2017 at 07:21 PM EST. 12 Comments
INTEL --
Intel Linux developers have partially reverted Mesa work done years ago to drop the default OpenGL behavior with the older i915 driver from exposing OpenGL 2.0+ support to now only having OpenGL 1.4 out-of-the-box.

See Older Intel Graphics To Drop From OpenGL 2.1 To 1.4 On Linux for more of the background to this story. This change just affects i915 to pre-i965 hardware by dropping OpenGL 2.0 by default due to Chrome and other applications making use of really slow code-paths when using the GL2 extensions on this old hardware that doesn't have adequate OpenGL 2 capabilities. So there's a better out-of-the-box experience by actually dropping the exposed OpenGL version back to v1.4.

But the latest Mesa code will at least continue to expose OpenGL ES 2.0 and the OpenGL 2 support can be restored if setting the fragment_shader and stub_occlusion_query options.

The change is present for Mesa 17.1.

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