[Mesa-stable] [PATCH 2/2] i965/mt: Disable HiZ when sharing depth buffer externally (v2)

[Emil Velikov]

On 16 December 2016 at 20:06, Chad Versace <chadversary at chromium.org> wrote:
> intel_miptree_make_shareable() discarded and disabled CCS. Fix it so
> that it discards and disables HiZ too.
>
> Fixes dEQP-EGL.functional.image.render_multiple_contexts.gles2_renderbuffer_depth16_depth_buffer
> on Skylake.
>
> v2: Actually do what the commit message says. Discard the HiZ buffer.
>
> Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=98329
> Reviewed-by: Topi Pohjolainen <topi.pohjolainen at intel.com>
> Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>
> Reviewed-by: Anuj Phogat <anuj.phogat at gmail.com>
> Cc: Nanley Chery <nanley.g.chery at intel.com
> Cc: Haixia Shi <hshi at chromium.org>
> (cherry picked from commit 42011be1e27f59d750b781c10766e19ec0ee6ff5)
> ---
Thanks for the backports Chad. I've applied both to the respective branches.

Humble request:
Please include the word "backport" anywhere through the email - as tag
in summary, or in the email contents.
It provides clarity and it's easier to track/parse with a script or
two - I'll add a note to the documentation shortly.

-Emil