From 170acd854aec50622a67bde225c2cf65604aee0c Mon Sep 17 00:00:00 2001
From: refraction <refraction@96395faa-99c1-11dd-bbfe-3dabce05a288>
Date: Fri, 17 Apr 2009 00:54:53 +0000
Subject: [PATCH] Added a check to make sure the unpack REALLY overflows,
 sometimes it can be dead on the limit or count the skip, so it doesn't need
 to break to slower code.

git-svn-id: http://pcsx2.googlecode.com/svn/trunk@995 96395faa-99c1-11dd-bbfe-3dabce05a288
---
 pcsx2/VifDma.cpp | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/pcsx2/VifDma.cpp b/pcsx2/VifDma.cpp
index adddb9a322..7522158b60 100644
--- a/pcsx2/VifDma.cpp
+++ b/pcsx2/VifDma.cpp
@@ -558,8 +558,17 @@ static void VIFunpack(u32 *data, vifCode *v, unsigned int size, const unsigned i
 		{
 			
 			//DevCon::Notice("VIF%x Unpack ending %x > %x", params VIFdmanum, tempsize, VIFdmanum ? 0x4000 : 0x1000);
-			tempsize = size;
-			size = 0;
+			if(vifRegs->cycle.cl == 1 && ((u32)(VIFdmanum ? 0x4000 : 0x1000) + ((vifRegs->cycle.cl - vifRegs->cycle.wl) * 16)) == tempsize
+				|| tempsize == (u32)(VIFdmanum ? 0x4000 : 0x1000))
+			{
+				//Its a red herring! so ignore it! SSE unpacks will be much quicker
+				tempsize = 0;
+			}
+			else
+			{
+				tempsize = size;
+				size = 0;
+			}
 		} else tempsize = 0;