anv: don't advertise mipmaps for linear 3D surfaces on BDW

Prior to SKL, the mipmaps for 3D surfaces are laid out in a way
that make it impossible to represent in the way that
VkSubresourceLayout expects. Since we can't tell users how to make
sense of them, don't report them as available.

"Fixes" dEQP-VK.image.subresource_layout.3d.*

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Nanley Chery <nanley.g.chery@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9419>

diff --git a/src/intel/vulkan/anv_formats.c b/src/intel/vulkan/anv_formats.c
index 9d09e6b..ebe71a5 100644 (file)
--- a/src/intel/vulkan/anv_formats.c
+++ b/src/intel/vulkan/anv_formats.c
@@ -978,7 +978,15 @@ anv_get_image_format_properties(
       maxExtent.width = 2048;
       maxExtent.height = 2048;
       maxExtent.depth = 2048;
-      maxMipLevels = 12; /* log2(maxWidth) + 1 */
+      /* Prior to SKL, the mipmaps for 3D surfaces are laid out in a way
+       * that make it impossible to represent in the way that
+       * VkSubresourceLayout expects. Since we can't tell users how to make
+       * sense of them, don't report them as available.
+       */
+      if (devinfo->gen < 9 && info->tiling == VK_IMAGE_TILING_LINEAR)
+         maxMipLevels = 1;
+      else
+         maxMipLevels = 12; /* log2(maxWidth) + 1 */
       maxArraySize = 1;
       sampleCounts = VK_SAMPLE_COUNT_1_BIT;
       break;