Mesa (master): i965: Allow HiZ for glCopyImageSubData sources

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Module: Mesa
Branch: master
Commit: 7d75bf4f3fc6a048fed05de301590c3a2b73c268
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=7d75bf4f3fc6a048fed05de301590c3a2b73c268

Author: Jason Ekstrand <jason at jlekstrand.net>
Date:   Thu Dec  5 10:39:18 2019 -0600

i965: Allow HiZ for glCopyImageSubData sources

v2 (Ken): Handle platforms without sampler support for HiZ

Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>
Reviewed-by: Jason Ekstrand <jason at jlekstrand.net> [v2 changes]

---

 src/mesa/drivers/dri/i965/brw_blorp.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/mesa/drivers/dri/i965/brw_blorp.c b/src/mesa/drivers/dri/i965/brw_blorp.c
index 0ac636bb88c..33729430638 100644
--- a/src/mesa/drivers/dri/i965/brw_blorp.c
+++ b/src/mesa/drivers/dri/i965/brw_blorp.c
@@ -463,6 +463,15 @@ brw_blorp_copy_miptrees(struct brw_context *brw,
    bool src_clear_supported, dst_clear_supported;
 
    switch (src_mt->aux_usage) {
+   case ISL_AUX_USAGE_HIZ:
+      if (intel_miptree_sample_with_hiz(brw, src_mt)) {
+         src_aux_usage = src_mt->aux_usage;
+         src_clear_supported = true;
+      } else {
+         src_aux_usage = ISL_AUX_USAGE_NONE;
+         src_clear_supported = false;
+      }
+      break;
    case ISL_AUX_USAGE_MCS:
    case ISL_AUX_USAGE_CCS_E:
       src_aux_usage = src_mt->aux_usage;