From e616d33850466b6e9d0fb055c6a9870d223ec038 Mon Sep 17 00:00:00 2001
From: Jesse Natalie <jenatali@microsoft.com>
Date: Wed, 14 Dec 2022 12:24:24 -0800
Subject: [PATCH] dzn: Respect sharing mode

D3D's "simultaneous access" concept pretty closely matches
Vulkan's concurrent sharing mode, except that we don't
support simultaneous access for depth buffers.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20324>
---
 src/microsoft/vulkan/dzn_image.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/microsoft/vulkan/dzn_image.c b/src/microsoft/vulkan/dzn_image.c
index 033c6277f47..161878a627c 100644
--- a/src/microsoft/vulkan/dzn_image.c
+++ b/src/microsoft/vulkan/dzn_image.c
@@ -256,6 +256,10 @@ dzn_image_create(struct dzn_device *device,
       }
    }
 
+   if (pCreateInfo->sharingMode == VK_SHARING_MODE_CONCURRENT &&
+       !(image->vk.usage & VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT))
+      image->desc.Flags |= D3D12_RESOURCE_FLAG_ALLOW_SIMULTANEOUS_ACCESS;
+
    *out = dzn_image_to_handle(image);
    return VK_SUCCESS;
 }