From cd82669a8540063001283175fc63f4b744a3fa43 Mon Sep 17 00:00:00 2001
From: Philip Rebohle <philip.rebohle@tu-dortmund.de>
Date: Tue, 1 Oct 2019 21:48:13 +0200
Subject: [PATCH] [dxgi] Fix GetDisplayModeList1 output for DXGI_FORMAT_UNKNOWN

Fixes a wine test failure.
---
 src/dxgi/dxgi_output.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/dxgi/dxgi_output.cpp b/src/dxgi/dxgi_output.cpp
index 65a6a840..8d3e78f8 100644
--- a/src/dxgi/dxgi_output.cpp
+++ b/src/dxgi/dxgi_output.cpp
@@ -246,6 +246,12 @@ namespace dxvk {
     if (pNumModes == nullptr)
       return DXGI_ERROR_INVALID_CALL;
     
+    // Special case, just return zero modes
+    if (EnumFormat == DXGI_FORMAT_UNKNOWN) {
+      *pNumModes = 0;
+      return S_OK;
+    }
+
     // Query monitor info to get the device name
     ::MONITORINFOEXW monInfo;
     monInfo.cbSize = sizeof(monInfo);