From 31c9a0b0e892cecbd93780cbc08c65ceb7962550 Mon Sep 17 00:00:00 2001
From: Christoph Oelckers <coelckers@zdoom.fake>
Date: Thu, 5 Dec 2013 15:36:20 +0100
Subject: [PATCH] - Subtract should respect alpha.

---
 src/r_data/renderstyle.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/r_data/renderstyle.cpp b/src/r_data/renderstyle.cpp
index 4259b3440..660cd8f09 100644
--- a/src/r_data/renderstyle.cpp
+++ b/src/r_data/renderstyle.cpp
@@ -58,7 +58,7 @@ FRenderStyle LegacyRenderStyles[STYLE_Count] =
 		  /* STYLE_Shaded */  {{ STYLEOP_Add,		STYLEALPHA_Src,		STYLEALPHA_InvSrc,	STYLEF_RedIsAlpha | STYLEF_ColorIsFixed }},
 /* STYLE_TranslucentStencil */{{ STYLEOP_Add,		STYLEALPHA_Src,		STYLEALPHA_InvSrc,	STYLEF_ColorIsFixed }},
           /* STYLE_Shadow */  {{ STYLEOP_Shadow,	0,					0,					0 }},
-		  /* STYLE_Subtract*/ {{ STYLEOP_RevSub,	STYLEALPHA_One,		STYLEALPHA_One,		0 }},
+		  /* STYLE_Subtract*/ {{ STYLEOP_RevSub,	STYLEALPHA_Src,		STYLEALPHA_One,		0 }},
 };
 #else
 FRenderStyle LegacyRenderStyles[STYLE_Count];
@@ -76,7 +76,7 @@ static const BYTE Styles[STYLE_Count * 4] =
 	STYLEOP_Add,		STYLEALPHA_Src,		STYLEALPHA_InvSrc,	STYLEF_RedIsAlpha | STYLEF_ColorIsFixed,
 	STYLEOP_Add,		STYLEALPHA_Src,		STYLEALPHA_InvSrc,	STYLEF_ColorIsFixed,
 	STYLEOP_Shadow,		0,					0,					0,
-	STYLEOP_RevSub,		STYLEALPHA_One,		STYLEALPHA_One,		0,
+	STYLEOP_RevSub,		STYLEALPHA_Src,		STYLEALPHA_One,		0,
 };
 
 static struct LegacyInit