Mesa (master): iris: Prepare stencil resource before clear depth stencil

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Module: Mesa
Branch: master
Commit: 81de49a9f28482d262c875569ca1412989e88b06
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=81de49a9f28482d262c875569ca1412989e88b06

Author: Sagar Ghuge <sagar.ghuge at intel.com>
Date:   Wed Aug 14 13:58:57 2019 -0700

iris: Prepare stencil resource before clear depth stencil

Let aux surface state tracker track the stencil buffer's aux state while
clearing depth stencil buffer.

v2: Fix condition check (Nanley Chery)

Signed-off-by: Sagar Ghuge <sagar.ghuge at intel.com>
Reviewed-by: Nanley Chery <nanley.g.chery at intel.com>

---

 src/gallium/drivers/iris/iris_clear.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/gallium/drivers/iris/iris_clear.c b/src/gallium/drivers/iris/iris_clear.c
index 309fda66665..cdc96471ce7 100644
--- a/src/gallium/drivers/iris/iris_clear.c
+++ b/src/gallium/drivers/iris/iris_clear.c
@@ -590,7 +590,10 @@ clear_depth_stencil(struct iris_context *ice,
    struct blorp_batch blorp_batch;
    blorp_batch_init(&ice->blorp, &blorp_batch, batch, blorp_flags);
 
-   if (stencil_res) {
+   uint8_t stencil_mask = clear_stencil && stencil_res ? 0xff : 0;
+   if (stencil_mask) {
+      iris_resource_prepare_access(ice, batch, stencil_res, level, 1, box->z,
+                                   box->depth, stencil_res->aux.usage, false);
       iris_blorp_surf_for_resource(&ice->vtbl, &stencil_surf,
                                    &stencil_res->base, stencil_res->aux.usage,
                                    level, true);
@@ -602,7 +605,7 @@ clear_depth_stencil(struct iris_context *ice,
                              box->x + box->width,
                              box->y + box->height,
                              clear_depth && z_res, depth,
-                             clear_stencil && stencil_res ? 0xff : 0, stencil);
+                             stencil_mask, stencil);
 
    blorp_batch_finish(&blorp_batch);
    iris_flush_and_dirty_for_history(ice, batch, res, 0,
@@ -612,6 +615,11 @@ clear_depth_stencil(struct iris_context *ice,
       iris_resource_finish_depth(ice, z_res, level,
                                  box->z, box->depth, true);
    }
+
+   if (stencil_mask) {
+      iris_resource_finish_write(ice, stencil_res, level, box->z, box->depth,
+                                 stencil_res->aux.usage);
+   }
 }
 
 /**