[Mesa-dev] [PATCH 13/14] i965/gen8: Add HiZ auxiliary buffer support

[Jordan Justen]

From: Kenneth Graunke <kenneth at whitecape.org>

Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
[jordan.l.justen at intel.com: convert from aux_mt to aux_buf]
Signed-off-by: Jordan Justen <jordan.l.justen at intel.com>
---
 src/mesa/drivers/dri/i965/gen8_surface_state.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/mesa/drivers/dri/i965/gen8_surface_state.c b/src/mesa/drivers/dri/i965/gen8_surface_state.c
index 4818fca..45ff904 100644
--- a/src/mesa/drivers/dri/i965/gen8_surface_state.c
+++ b/src/mesa/drivers/dri/i965/gen8_surface_state.c
@@ -158,6 +158,9 @@ gen8_update_texture_surface(struct gl_context *ctx,
    if (mt->mcs_buf) {
       aux_buf = mt->mcs_buf;
       aux_mode = GEN8_SURFACE_AUX_MODE_MCS;
+   } else if (intel_miptree_sample_with_hiz(brw, mt)) {
+      aux_buf = mt->hiz_buf;
+      aux_mode = GEN8_SURFACE_AUX_MODE_HIZ;
    }
 
    /* If this is a view with restricted NumLayers, then our effective depth
@@ -239,7 +242,7 @@ gen8_update_texture_surface(struct gl_context *ctx,
       surf[10] = 0;
       surf[11] = 0;
    }
-   surf[12] = 0;
+   surf[12] = (aux_mode == GEN8_SURFACE_AUX_MODE_HIZ) ? mt->depth_clear_value : 0;
 
    /* Emit relocation to surface contents */
    drm_intel_bo_emit_reloc(brw->batch.bo,
-- 
2.0.0