[PATCH 2/4] glx: Implement GLX_ARB_create_context_profile

[Dave Airlie]

>
>    * Validate values specified with the GLX_CONTEXT_PROFILE_MASK_ARB
>      attribute.
>
>    * Select a DRI2 "api" based on the setting of
>      GLX_CONTEXT_PROFILE_MASK_ARB.
>
>    * Enable GLX_ARB_create_context_profile extension.
>
> This change assumes that any DRI2 driver can handle (possibly by saying "no")
> seeing an API setting other than __DRI_API_OPENGL.  This allows enabling this
> extension any time GLX_ARB_create_context is enabled.
>
> Also, the validation code in __glXDisp_CreateContextAttribsARB is structured
> in a very verbose manner (using a switch-statement) to ease the addition of
> GLX_EXT_create_context_es2_profile.
>
> Signed-off-by: Ian Romanick <ian.d.romanick at intel.com>

LGTM:

Reviewed-by: Dave Airlie <airlied at redhat.com>