From c55c09368b8e7d878cbe602b6d380ba0d1e6e1b3 Mon Sep 17 00:00:00 2001
From: Philip Rebohle <philip.rebohle@tu-dortmund.de>
Date: Sun, 11 Dec 2022 19:28:37 +0100
Subject: [PATCH] [d3d11] Only store low 8 bits of stencil reference

Seems to match behaviour of the D3D11 runtime, in that OMGetDepthStencilState
will not retain the high bits.

Found by CME. Should fix #1784.
---
 src/d3d11/d3d11_context.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/d3d11/d3d11_context.cpp b/src/d3d11/d3d11_context.cpp
index 3c649c05..37135a75 100644
--- a/src/d3d11/d3d11_context.cpp
+++ b/src/d3d11/d3d11_context.cpp
@@ -2261,6 +2261,10 @@ namespace dxvk {
       ApplyDepthStencilState();
     }
 
+    // The D3D11 runtime only appears to store the low 8 bits,
+    // and some games rely on this behaviour. Do the same here.
+    StencilRef &= 0xFF;
+
     if (m_state.om.stencilRef != StencilRef) {
       m_state.om.stencilRef = StencilRef;
       ApplyStencilRef();