From dd6a9f655958dd634fe1bdacadef51d84fac7e39 Mon Sep 17 00:00:00 2001
From: madmaxoft <github@xoft.cz>
Date: Mon, 23 Jun 2014 00:15:22 +0200
Subject: [PATCH] Fixed the slab vertical mirroring.

---
 src/Blocks/BlockSlab.h | 15 ++++++---------
 1 file changed, 6 insertions(+), 9 deletions(-)

diff --git a/src/Blocks/BlockSlab.h b/src/Blocks/BlockSlab.h
index f3f2366fd..6c861be86 100644
--- a/src/Blocks/BlockSlab.h
+++ b/src/Blocks/BlockSlab.h
@@ -124,6 +124,12 @@ public:
 		return E_BLOCK_AIR;
 	}
 	
+	
+	virtual NIBBLETYPE MetaMirrorXZ(NIBBLETYPE a_Meta) override
+	{
+		// Toggle the 4th bit - up / down:
+		return (a_Meta ^ 0x08);
+	}
 } ;
 
 
@@ -167,15 +173,6 @@ public:
 		ASSERT(!"Unhandled double slab type!");
 		return "";
 	}
-
-
-	virtual NIBBLETYPE MetaMirrorXZ(NIBBLETYPE a_Meta) override
-	{
-		NIBBLETYPE OtherMeta = a_Meta & 0x07;  // Contains unrelated meta data.
-
-		// 8th bit is up/down.  1 right-side-up, 0 is up-side-down.
-		return (a_Meta & 0x08) ? 0x00 + OtherMeta : 0x01 + OtherMeta;
-	}
 } ;