i965/miptree: Allow get_aux_isl_surf when there is no aux surface

Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>

diff --git a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
index fbb06de162a0db455ce6b9e9cbe7ddc8e62d4a0b..1f974b3c11a161c1ac4f97189d7b07ec6732362a 100644 (file)
--- a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
+++ b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
@@ -3187,7 +3187,8 @@ intel_miptree_get_aux_isl_surf(struct brw_context *brw,
    } else if (mt->fast_clear_state != INTEL_FAST_CLEAR_STATE_NO_MCS) {
       *usage = ISL_AUX_USAGE_CCS_D;
    } else {
-      unreachable("Invalid MCS miptree");
+      *usage = ISL_AUX_USAGE_NONE;
+      return;
    }
 
    /* Figure out the format and tiling of the auxiliary surface */