From 75674866681d7a5c9624fab3f8e75dad0519d848 Mon Sep 17 00:00:00 2001
From: Philip Rebohle <philip.rebohle@tu-dortmund.de>
Date: Mon, 10 Feb 2020 09:14:59 +0100
Subject: [PATCH] [d3d9] Handle invalid alpha ref correctly

---
 src/d3d9/d3d9_device.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/d3d9/d3d9_device.cpp b/src/d3d9/d3d9_device.cpp
index 8d1e188a..8864a272 100644
--- a/src/d3d9/d3d9_device.cpp
+++ b/src/d3d9/d3d9_device.cpp
@@ -4570,7 +4570,7 @@ namespace dxvk {
     auto& rs = m_state.renderStates;
 
     if constexpr (Item == D3D9RenderStateItem::AlphaRef) {
-      float alpha = float(rs[D3DRS_ALPHAREF]) / 255.0f;
+      float alpha = float(rs[D3DRS_ALPHAREF] & 0xFF) / 255.0f;
       UpdatePushConstant<offsetof(D3D9RenderStateInfo, alphaRef), sizeof(float)>(&alpha);
     }
     else if constexpr (Item == D3D9RenderStateItem::FogColor) {