From 3d7a7b397b9ef4b842c02d449a65accd00a547af Mon Sep 17 00:00:00 2001
From: Per Inge Mathisen <per@wz2100.net>
Date: Fri, 31 Dec 2010 18:20:51 +0100
Subject: [PATCH] simplipie: Fix error when fixing face culling and
 tessellation at the same time.

---
 data/base/features/mibridge.pie | 2 +-
 data/base/features/mibridgx.pie | 2 +-
 tools/conversion/simplipie.c    | 4 ++++
 3 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/data/base/features/mibridge.pie b/data/base/features/mibridge.pie
index 7d462a1ff..6b63c34ac 100644
--- a/data/base/features/mibridge.pie
+++ b/data/base/features/mibridge.pie
@@ -37,7 +37,7 @@ POINTS 33
 	-65 97 -64 
 	0 97 -64 
 	65 97 -64
-POLYGONS 26
+POLYGONS 28
 	200 3 2 1 0 199 87 199 131 194 131
 	200 3 0 3 2 194 131 194 87 199 87
 	200 3 6 5 4 194 131 194 87 199 87
diff --git a/data/base/features/mibridgx.pie b/data/base/features/mibridgx.pie
index f4e350212..cd7509ea6 100644
--- a/data/base/features/mibridgx.pie
+++ b/data/base/features/mibridgx.pie
@@ -114,7 +114,7 @@ POINTS 110
 	0 127 -130 
 	65 127 -130 
 	65 127 -195
-POLYGONS 110
+POLYGONS 116
 	200 3 3 2 1 169 71 139 71 139 41
 	200 3 3 1 0 169 71 139 41 169 41
 	200 3 4 5 1 79 2 48 2 79 46
diff --git a/tools/conversion/simplipie.c b/tools/conversion/simplipie.c
index be7377419..fcc94db02 100644
--- a/tools/conversion/simplipie.c
+++ b/tools/conversion/simplipie.c
@@ -305,6 +305,10 @@ static void dump_to_pie(FILE *ctl, FILE *fp, const char *input)
 				faceList[j].index[m] = posList[faceList[j].index[m]].reindex;
 			}
 			facesPIE3 += faceList[j].vertices - 3;	// easy tessellation
+			if (faceList[j].cull)
+			{
+				facesPIE3 += faceList[j].vertices - 3;	// must add additional face that is faced in the opposite direction also for tessellated faces
+			}
 		}
 
 		if (verbose && (facesPIE3 - faces))