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• Add HW context support to i915

Add HW context support to i915 driver

Starting with Gen6 (Sandy Bridge), Mesa 9.2+ relies on hardware context switching in the i915 driver.

Status

How to test

We're insterested in test reports (success or failure) on any GPU (even non-Intel).

1. Install Mesa 10.3 from the "experimental" branch of the xorg-dev repository. You need to rebuild at least the following ports:

   • graphics/libdrm

   • graphics/libglapi

   • graphics/libGL

   • graphics/dri

2. Check if Mesa complains about missing hw context:

   # glxinfo
   name of display: :0.0
   Gen6+ requires Kernel 3.6 or later.
   Assertion failed: (ctx->Version > 0), function handle_first_current, file ../../src/mesa/main/context.c, line 1498.
   Abort (core dumped)

3. Clone the Git branch or apply the patch to your local source tree
4. Build and install kernel
5. Reboot

6. Re-run glxinfo

   # glxinfo
   name of display: :0
   display: :0  screen: 0
   direct rendering: Yes
   ...
   OpenGL renderer string: Mesa DRI Intel(R) 965GM 
   OpenGL version string: 2.1 Mesa 10.2.4
   ...

7. Play with your usual GL applications.

Please report any success or failure by following the instructions on the Graphics portal.