Mesa (master): i965: Make INTEL_DEBUG= mip print out whether HiZ is enabled.

[Kenneth Graunke]

Module: Mesa
Branch: master
Commit: fa35b272a04f1c0c598f1ba67f6e27fac96efa01
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=fa35b272a04f1c0c598f1ba67f6e27fac96efa01

Author: Kenneth Graunke <kenneth at whitecape.org>
Date:   Fri Jun 13 15:25:14 2014 -0700

i965: Make INTEL_DEBUG=mip print out whether HiZ is enabled.

We only enable HiZ for miplevels which are aligned on 8x4 blocks.  When
debugging HiZ failures, it's useful to know whether a particular
miplevel is using HiZ or not.

Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
Reviewed-by: Jordan Justen <jordan.l.justen at intel.com>

---

 src/mesa/drivers/dri/i965/intel_mipmap_tree.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
index a0e637a..4c71e41 100644
--- a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
+++ b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
@@ -1370,10 +1370,12 @@ intel_miptree_level_enable_hiz(struct brw_context *brw,
        * force the proper size alignments.
        */
       if (level > 0 && ((width & 7) || (height & 3))) {
+         DBG("mt %p level %d: HiZ DISABLED\n", mt, level);
          return false;
       }
    }
 
+   DBG("mt %p level %d: HiZ enabled\n", mt, level);
    mt->level[level].has_hiz = true;
    return true;
 }