From 73ae6739a586294f8b25ee82b01caaee1bb4563c Mon Sep 17 00:00:00 2001
From: Eugene Sandulenko
Date: Mon, 23 Aug 2010 08:40:12 +0000
Subject: SWORD25: Finally fix alpha blending.

svn-id: r53284
---
 engines/sword25/gfx/opengl/glimage.cpp | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

(limited to 'engines/sword25/gfx')

diff --git a/engines/sword25/gfx/opengl/glimage.cpp b/engines/sword25/gfx/opengl/glimage.cpp
index 7a54c0b548..961215b4d4 100644
--- a/engines/sword25/gfx/opengl/glimage.cpp
+++ b/engines/sword25/gfx/opengl/glimage.cpp
@@ -229,13 +229,13 @@ bool GLImage::Blit(int PosX, int PosY, int Flipping, Common::Rect *pPartRect, un
 				*out++ = a;
 				break;
 			default: // alpha blending
-				*out = (byte)(((b - *out) * a + *out) >> 8);
+				*out += (byte)(((b - *out) * a) >> 8);
 				out++;
-				*out = (byte)(((g - *out) * a + *out) >> 8);
+				*out += (byte)(((g - *out) * a) >> 8);
 				out++;
-				*out = (byte)(((r - *out) * a + *out) >> 8);
+				*out += (byte)(((r - *out) * a) >> 8);
 				out++;
-				*out = a;
+				*out = 255;
 				out++;
 			}
 		}
-- 
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