anv: Add a helper to determine sampling with HiZ

Signed-off-by: Nanley Chery <nanley.g.chery@intel.com> Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
2017-01-09 19:24:44 -08:00
parent bcf880a9c8
commit 3ac01ad2ac
1 changed files with 7 additions and 0 deletions
@@ -1609,6 +1609,13 @@ struct anv_image {
   struct anv_surface aux_surface;
 };

+/* Returns true if a HiZ-enabled depth buffer can be sampled from. */
+static inline bool
+anv_can_sample_with_hiz(uint8_t gen, uint32_t samples)
+{
+   return gen >= 8 && samples == 1;
+}
+
 void
 anv_gen8_hiz_op_resolve(struct anv_cmd_buffer *cmd_buffer,
                        const struct anv_image *image,