From 79feed9d89982195dd709e86df5ba7c5bb9a38e0 Mon Sep 17 00:00:00 2001
From: Christopher Egert <cme3000@gmail.com>
Date: Mon, 18 May 2020 22:38:24 +0200
Subject: [PATCH] [d3d9] Allow D3DFMT_NULL as RenderTargetFormat in
 CheckDepthStencilMatch

This partially fixes shadows in Timeshift.
---
 src/d3d9/d3d9_adapter.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/d3d9/d3d9_adapter.cpp b/src/d3d9/d3d9_adapter.cpp
index 4c7821d4..24aeac6b 100644
--- a/src/d3d9/d3d9_adapter.cpp
+++ b/src/d3d9/d3d9_adapter.cpp
@@ -217,6 +217,9 @@ namespace dxvk {
     if (!IsDepthFormat(DepthStencilFormat))
       return D3DERR_NOTAVAILABLE;
 
+    if (RenderTargetFormat == dxvk::D3D9Format::NULL_FORMAT)
+      return D3D_OK;
+
     auto mapping = ConvertFormatUnfixed(RenderTargetFormat);
     if (mapping.FormatColor == VK_FORMAT_UNDEFINED)
       return D3DERR_NOTAVAILABLE;