From 3a00b48ce0a4de1b8b6f161fbf3906416c36d642 Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <icculus@icculus.org>
Date: Sun, 10 Jan 2010 06:18:39 +0000
Subject: [PATCH] Merged r4992:4993 from branches/SDL-1.2: increased alpha
 blend accuracy.

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%404376
---
 src/video/SDL_blit.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/video/SDL_blit.h b/src/video/SDL_blit.h
index c58a76a18..725832dc2 100644
--- a/src/video/SDL_blit.h
+++ b/src/video/SDL_blit.h
@@ -444,9 +444,9 @@ do {									   \
 /* Blend the RGB values of two Pixels based on a source alpha value */
 #define ALPHA_BLEND(sR, sG, sB, A, dR, dG, dB)	\
 do {						\
-	dR = ((((int)(sR-dR)*(int)A)/255)+dR);	\
-	dG = ((((int)(sG-dG)*(int)A)/255)+dG);	\
-	dB = ((((int)(sB-dB)*(int)A)/255)+dB);	\
+	dR = (((((int)(sR-dR)*((int)A))+255)/255)+dR);	\
+	dG = (((((int)(sG-dG)*((int)A))+255)/255)+dG);	\
+	dB = (((((int)(sB-dB)*((int)A))+255)/255)+dB);	\
 } while(0)