For Gen8-11, there are some restrictions around sampling from HiZ.
The Skylake PRM docs for RENDER_SURFACE_STATE::AuxiliarySurfaceMode
say:
"If this field is set to AUX_HIZ, Number of Multisamples must
be MULTISAMPLECOUNT_1, and Surface Type cannot be SURFTYPE_3D."
Fixes: dEQP-VK.geometry.layered.3d.*.readback
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/2720
Signed-off-by: Danylo Piliaiev <danylo.piliaiev@globallogic.com>
Reviewed-by: Arcady Goldmints-Orlov <agoldmints@igalia.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Tested-by: Marge Bot <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4409>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4409>
if (!(image->aspects & VK_IMAGE_ASPECT_DEPTH_BIT))
return false;
+ /* For Gen8-11, there are some restrictions around sampling from HiZ.
+ * The Skylake PRM docs for RENDER_SURFACE_STATE::AuxiliarySurfaceMode
+ * say:
+ *
+ * "If this field is set to AUX_HIZ, Number of Multisamples must
+ * be MULTISAMPLECOUNT_1, and Surface Type cannot be SURFTYPE_3D."
+ */
+ if (image->type == VK_IMAGE_TYPE_3D)
+ return false;
+
/* Allow this feature on BDW even though it is disabled in the BDW devinfo
* struct. There's documentation which suggests that this feature actually
* reduces performance on BDW, but it has only been observed to help so