[PATCH 2/2] i965: Set fast color clear mcs_state on newly allocated image miptrees

[Keith Packard <keithp@keithp.com>]

Just copying code from the dri2 path to set up the fast color clear state.

This also removes a couple of bogus intel_region_reference calls.

Signed-off-by: Keith Packard <keithp@keithp.com>
---
 src/mesa/drivers/dri/i965/intel_mipmap_tree.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
index 884ddef..ca78f32 100644
--- a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
+++ b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
@@ -762,7 +762,13 @@ intel_miptree_create_for_image_buffer(struct brw_context *intel,
    if (!singlesample_mt)
       return NULL;
 
-   intel_region_reference(&singlesample_mt->region, region);
+   /* If this miptree is capable of supporting fast color clears, set
+    * mcs_state appropriately to ensure that fast clears will occur.
+    * Allocation of the MCS miptree will be deferred until the first fast
+    * clear actually occurs.
+    */
+   if (intel_is_non_msrt_mcs_buffer_supported(intel, singlesample_mt))
+      singlesample_mt->mcs_state = INTEL_MCS_STATE_RESOLVED;
 
    if (num_samples == 0)
       return singlesample_mt;
@@ -780,8 +786,6 @@ intel_miptree_create_for_image_buffer(struct brw_context *intel,
    multisample_mt->singlesample_mt = singlesample_mt;
    multisample_mt->need_downsample = false;
 
-   intel_region_reference(&multisample_mt->region, region);
-
    if (intel->is_front_buffer_rendering && buffer_type == __DRI_IMAGE_BUFFER_FRONT) {
       intel_miptree_upsample(intel, multisample_mt);
    }
-- 
1.8.4.3