Mesa (master): iris: Only update clear color for gens 8 and 9.

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Module: Mesa
Branch: master
Commit: 6a02873687f76c08bf4788d2905b9b8abeee2ba7
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=6a02873687f76c08bf4788d2905b9b8abeee2ba7

Author: Rafael Antognolli <rafael.antognolli at intel.com>
Date:   Tue Mar 26 11:08:22 2019 -0700

iris: Only update clear color for gens 8 and 9.

Newer gens can read it directly.

Also properly skip updating the ISL_AUX_USAGE_NONE surface.

Fixes: a8b5ea8ef015ed4a "iris: Add function to update clear color in surface state."
Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>

---

 src/gallium/drivers/iris/iris_state.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/gallium/drivers/iris/iris_state.c b/src/gallium/drivers/iris/iris_state.c
index 25c2af9845e..50956ec7243 100644
--- a/src/gallium/drivers/iris/iris_state.c
+++ b/src/gallium/drivers/iris/iris_state.c
@@ -3785,8 +3785,17 @@ update_clear_value(struct iris_batch *batch,
                    struct iris_resource *res,
                    struct iris_state_ref *state)
 {
+   struct iris_screen *screen = batch->screen;
+   const struct gen_device_info *devinfo = &screen->devinfo;
+
+   /* We only need to update the clear color in the surface state for gen8 and
+    * gen9. Newer gens can read it directly from the clear color state buffer.
+    */
+   if (devinfo->gen > 9)
+      return;
+
    unsigned aux_modes = res->aux.possible_usages;
-   aux_modes &= ~ISL_AUX_USAGE_NONE;
+   aux_modes &= ~(1 << ISL_AUX_USAGE_NONE);
 
    while (aux_modes) {
       enum isl_aux_usage aux_usage = u_bit_scan(&aux_modes);