Mesa (master): anv: Add func anv_image_has_hiz()

[Nanley Chery]

Module: Mesa
Branch: master
Commit: 3aec432ed3306ffb62e2a703f5b419d5ae012afa
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=3aec432ed3306ffb62e2a703f5b419d5ae012afa

Author: Chad Versace <chad.versace at intel.com>
Date:   Thu Oct  6 15:21:48 2016 -0700

anv: Add func anv_image_has_hiz()

Signed-off-by: Nanley Chery <nanley.g.chery at intel.com>
Reviewed-by: Jason Ekstrand <jason at jlekstrand.net>

---

 src/intel/vulkan/anv_private.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/intel/vulkan/anv_private.h b/src/intel/vulkan/anv_private.h
index dfcedd1..fd886bf 100644
--- a/src/intel/vulkan/anv_private.h
+++ b/src/intel/vulkan/anv_private.h
@@ -1759,6 +1759,16 @@ const struct anv_surface *
 anv_image_get_surface_for_aspect_mask(const struct anv_image *image,
                                       VkImageAspectFlags aspect_mask);
 
+static inline bool
+anv_image_has_hiz(const struct anv_image *image)
+{
+   /* We must check the aspect because anv_image::hiz_surface belongs to
+    * a union.
+    */
+   return (image->aspects & VK_IMAGE_ASPECT_DEPTH_BIT) &&
+          image->hiz_surface.isl.size > 0;
+}
+
 void anv_image_view_init(struct anv_image_view *view,
                          struct anv_device *device,
                          const VkImageViewCreateInfo* pCreateInfo,