[Scummvm-cvs-logs] SF.net SVN: scummvm:[53284] scummvm/trunk/engines/sword25/gfx/opengl/ glimage.cpp

[sev at users.sourceforge.net]

Revision: 53284
          http://scummvm.svn.sourceforge.net/scummvm/?rev=53284&view=rev
Author:   sev
Date:     2010-10-12 23:16:00 +0000 (Tue, 12 Oct 2010)

Log Message:
-----------
SWORD25: Finally fix alpha blending.

Modified Paths:
--------------
    scummvm/trunk/engines/sword25/gfx/opengl/glimage.cpp

Modified: scummvm/trunk/engines/sword25/gfx/opengl/glimage.cpp
===================================================================
--- scummvm/trunk/engines/sword25/gfx/opengl/glimage.cpp	2010-10-12 23:15:39 UTC (rev 53283)
+++ scummvm/trunk/engines/sword25/gfx/opengl/glimage.cpp	2010-10-12 23:16:00 UTC (rev 53284)
@@ -229,13 +229,13 @@
 				*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++;
 			}
 		}


This was sent by the SourceForge.net collaborative development platform, the world's largest Open Source development site.