From a98072a3ca41ca826895b78fb193a80155c65929 Mon Sep 17 00:00:00 2001
From: sudonim1 <sudonim1@96395faa-99c1-11dd-bbfe-3dabce05a288>
Date: Fri, 28 May 2010 21:55:44 +0000
Subject: [PATCH] IPU: include default alpha in SSE code for maybe a small
 speed gain.

git-svn-id: http://pcsx2.googlecode.com/svn/trunk@3107 96395faa-99c1-11dd-bbfe-3dabce05a288
---
 pcsx2/IPU/IPU.cpp     | 14 ++++----------
 pcsx2/IPU/yuv2rgb.cpp | 12 ++++++++++++
 2 files changed, 16 insertions(+), 10 deletions(-)

diff --git a/pcsx2/IPU/IPU.cpp b/pcsx2/IPU/IPU.cpp
index 07928fe8f1..3ac8db1d12 100644
--- a/pcsx2/IPU/IPU.cpp
+++ b/pcsx2/IPU/IPU.cpp
@@ -1166,22 +1166,16 @@ void __fastcall ipu_csc(macroblock_8 *mb8, macroblock_rgb32 *rgb32, int sgn)
 		{
 			if ((p[0] < s_thresh[0]) && (p[1] < s_thresh[0]) && (p[2] < s_thresh[0]))
 				*(u32*)p = 0;
-			else
-				p[3] = ((p[0] < s_thresh[1]) && (p[1] < s_thresh[1]) && (p[2] < s_thresh[1])) ? 0x40 : 0x80;
+			else if ((p[0] < s_thresh[1]) && (p[1] < s_thresh[1]) && (p[2] < s_thresh[1]))
+				p[3] = 0x40;
 		}
 	}
 	else if (s_thresh[1] > 0)
 	{
 		for (i = 0; i < 64*4; i++, p += 4)
 		{
-			p[3] = ((p[0] < s_thresh[1]) && (p[1] < s_thresh[1]) && (p[2] < s_thresh[1])) ? 0x40 : 0x80;
-		}
-	}
-	else
-	{
-		for (i = 0; i < 64; i++, p += 16)
-		{
-			p[3] = p[7] = p[11] = p[15] = 0x80;
+			if ((p[0] < s_thresh[1]) && (p[1] < s_thresh[1]) && (p[2] < s_thresh[1]))
+				p[3] = 0x40;
 		}
 	}
 }
diff --git a/pcsx2/IPU/yuv2rgb.cpp b/pcsx2/IPU/yuv2rgb.cpp
index 383beb0318..108fa91975 100644
--- a/pcsx2/IPU/yuv2rgb.cpp
+++ b/pcsx2/IPU/yuv2rgb.cpp
@@ -155,6 +155,12 @@ ihatemsvc:
 		paddsw xmm2, xmm6
 		paddsw xmm5, xmm7
 
+		// 0x80; a constant is probably so much better
+		pcmpeqb xmm7, xmm7
+		psllw xmm7, 15
+		psrlw xmm7, 8
+		packuswb xmm7, xmm7
+
 		// round
 		movaps xmm6, xmmword ptr [edx+ROUND_1BIT]
 		paddw xmm0, xmm6
@@ -289,6 +295,12 @@ ihatemsvc:
 		"paddsw xmm2, xmm6\n"
 		"paddsw xmm5, xmm7\n"
 
+		// 0x80; a constant is probably so much better
+		"pcmpeqb xmm7, xmm7\n"
+		"psllw xmm7, 15\n"
+		"psrlw xmm7, 8\n"
+		"packuswb xmm7, xmm7\n"
+
 		// round
 		"movaps xmm6, xmmword ptr [%[sse2_tables]+%c[ROUND_1BIT]]\n"
 		"paddw xmm0, xmm6\n"