From 81a5e2fa0c49b2545a45d42c79b4abb836fc3bfd Mon Sep 17 00:00:00 2001
From: Philip Rebohle <philip.rebohle@tu-dortmund.de>
Date: Thu, 8 Nov 2018 18:49:52 +0100
Subject: [PATCH] [d3d11] Add helper to find exact mapping for depth-stencil
 formats

This is necessary in situations when we need to get the Vulkan format
that corresponds to the DXGI format rather than the remapped one.
---
 src/d3d11/d3d11_util.cpp | 20 ++++++++++++++++++++
 src/d3d11/d3d11_util.h   |  3 +++
 2 files changed, 23 insertions(+)

diff --git a/src/d3d11/d3d11_util.cpp b/src/d3d11/d3d11_util.cpp
index 6919ebdc..a3a2bf7e 100644
--- a/src/d3d11/d3d11_util.cpp
+++ b/src/d3d11/d3d11_util.cpp
@@ -157,4 +157,24 @@ namespace dxvk {
     return features;
   }
 
+
+  VkFormat GetPackedDepthStencilFormat(DXGI_FORMAT Format) {
+    switch (Format) {
+      case DXGI_FORMAT_R24G8_TYPELESS:
+      case DXGI_FORMAT_R24_UNORM_X8_TYPELESS:
+      case DXGI_FORMAT_X24_TYPELESS_G8_UINT:
+      case DXGI_FORMAT_D24_UNORM_S8_UINT:
+        return VK_FORMAT_D24_UNORM_S8_UINT;
+      
+      case DXGI_FORMAT_R32G8X24_TYPELESS:
+      case DXGI_FORMAT_R32_FLOAT_X8X24_TYPELESS:
+      case DXGI_FORMAT_X32_TYPELESS_G8X24_UINT:
+      case DXGI_FORMAT_D32_FLOAT_S8X24_UINT:
+        return VK_FORMAT_D32_SFLOAT_S8_UINT;
+      
+      default:
+        return VK_FORMAT_UNDEFINED;
+    }
+  }
+
 }
\ No newline at end of file
diff --git a/src/d3d11/d3d11_util.h b/src/d3d11/d3d11_util.h
index 5a0360d4..a7c961fd 100644
--- a/src/d3d11/d3d11_util.h
+++ b/src/d3d11/d3d11_util.h
@@ -48,5 +48,8 @@ namespace dxvk {
 
   VkFormatFeatureFlags GetImageFormatFeatures(
           UINT                      BindFlags);
+  
+  VkFormat GetPackedDepthStencilFormat(
+          DXGI_FORMAT               Format);
 
 }
\ No newline at end of file