From 85e0198b65a5c2e6f129a44d39e4dd3ed264944c Mon Sep 17 00:00:00 2001
From: Christoph Oelckers <coelckers@users.noreply.github.com>
Date: Mon, 27 Dec 2021 02:09:36 +0100
Subject: [PATCH] - fix triangulation issue with certain doors in Blood.

---
 libraries/libtess/Source/sweep.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libraries/libtess/Source/sweep.c b/libraries/libtess/Source/sweep.c
index 32a56bf40..5fc1d97b7 100644
--- a/libraries/libtess/Source/sweep.c
+++ b/libraries/libtess/Source/sweep.c
@@ -493,7 +493,7 @@ static int CheckForRightSplice( TESStesselator *tess, ActiveRegion *regUp )
 			SpliceMergeVertices( tess, eLo->Oprev, eUp );
 		}
 	} else {
-		if( EdgeSign( eUp->Dst, eLo->Org, eUp->Org ) <= 0 ) return FALSE;
+		if( EdgeSign( eUp->Dst, eLo->Org, eUp->Org ) < 0 ) return FALSE;
 
 		/* eLo->Org appears to be above eUp, so splice eLo->Org into eUp */
 		RegionAbove(regUp)->dirty = regUp->dirty = TRUE;