Mesa (master): anv/image: Memset all aux surfaces (not just HiZ) to 0

[Jason Ekstrand]

Module: Mesa
Branch: master
Commit: a512565b2b9f991729d747a7fefc1f89d68894d2
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=a512565b2b9f991729d747a7fefc1f89d68894d2

Author: Jason Ekstrand <jason.ekstrand at intel.com>
Date:   Mon Oct 24 19:35:34 2016 -0700

anv/image: Memset all aux surfaces (not just HiZ) to 0

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

---

 src/intel/vulkan/anv_image.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/intel/vulkan/anv_image.c b/src/intel/vulkan/anv_image.c
index cea46ce..b9bf6b8 100644
--- a/src/intel/vulkan/anv_image.c
+++ b/src/intel/vulkan/anv_image.c
@@ -297,7 +297,7 @@ VkResult anv_BindImageMemory(
       image->offset = 0;
    }
 
-   if (anv_image_has_hiz(image)) {
+   if (image->aux_surface.isl.size > 0) {
 
       /* The offset and size must be a multiple of 4K or else the
        * anv_gem_mmap call below will return NULL.
@@ -305,9 +305,11 @@ VkResult anv_BindImageMemory(
       assert((image->offset + image->aux_surface.offset) % 4096 == 0);
       assert(image->aux_surface.isl.size % 4096 == 0);
 
-      /* HiZ surfaces need to have their memory cleared to 0 before they
-       * can be used.  If we let it have garbage data, it can cause GPU
-       * hangs on some hardware.
+      /* Auxiliary surfaces need to have their memory cleared to 0 before they
+       * can be used.  For CCS surfaces, this puts them in the "resolved"
+       * state so they can be used with CCS enabled before we ever touch it
+       * from the GPU.  For HiZ, we need something valid or else we may get
+       * GPU hangs on some hardware and 0 works fine.
        */
       void *map = anv_gem_mmap(device, image->bo->gem_handle,
                                image->offset + image->aux_surface.offset,