[Bug 77223] [BDW]Piglit spec_ARB_texture_cube_map_copyteximage_CUBE_samples=2 fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=77223

Kenneth Graunke <kenneth at whitecape.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #5 from Kenneth Graunke <kenneth at whitecape.org> ---
Fixed by:

commit 34a68345e228b7cbc1bc6909704a89c08bf5368e
Author: Kenneth Graunke <kenneth at whitecape.org>
Date:   Mon Apr 21 14:08:49 2014 -0700

    i965: Make Broadwell HiZ path arrange for TC flushes.

    HiZ operations make the depth/render caches out of sync with the sampler
    caches.  We need to arrange for a TC flush to happen before the target
    buffer is used by the sampler.  Calling brw_render_cache_set_add_bo
    makes that happen.

    On previous generations, brw_blorp_exec took care of flushing the
    texture cache by calling intel_batchbuffer_emit_mi_flush after doing
    any rendering.  If we were to use the normal drawing path, then
    brw_postdraw_set_buffers_need_resolve would handle this.

    On Broadwell, we don't use BLORP, and we don't emit a rectangle
    primitive via the normal drawing path.  The 3DSTATE_WM_HZ_OP and
    PIPE_CONTROL implicitly make drawing happen.  So, none of our existing
    code makes this flush happen - we need to do it directly.

    Fixes 11 Piglit copyteximage subtests.

    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=77223
    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=77226
    Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
    Reviewed-by: Eric Anholt <eric at anholt.net>

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