[Scummvm-cvs-logs] SF.net SVN: scummvm:[48775] scummvm/trunk/engines/sci/graphics/ports.cpp

[m_kiewitz at users.sourceforge.net]

Revision: 48775
          http://scummvm.svn.sourceforge.net/scummvm/?rev=48775&view=rev
Author:   m_kiewitz
Date:     2010-04-22 18:12:25 +0000 (Thu, 22 Apr 2010)

Log Message:
-----------
SCI: added additional comment for setOrigin() commit (from waltervn), after doing some test with sierra interpreter

Modified Paths:
--------------
    scummvm/trunk/engines/sci/graphics/ports.cpp

Modified: scummvm/trunk/engines/sci/graphics/ports.cpp
===================================================================
--- scummvm/trunk/engines/sci/graphics/ports.cpp	2010-04-22 17:50:46 UTC (rev 48774)
+++ scummvm/trunk/engines/sci/graphics/ports.cpp	2010-04-22 18:12:25 UTC (rev 48775)
@@ -389,6 +389,8 @@
 
 void GfxPorts::setOrigin(int16 left, int16 top) {
 	// This looks fishy, but it's exactly what sierra did. They removed last bit of left in their interpreter
+	//  It seems sierra did it for EGA byte alignment (EGA uses 1 byte for 2 pixels) and left it in their interpreter even
+	//  when going VGA.
 	_curPort->left = left & 0x7FFE;
 	_curPort->top = top;
 }


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