[Scummvm-cvs-logs] SF.net SVN: scummvm:[36311] scummvm/trunk/graphics/VectorRendererSpec.cpp

[fingolfin at users.sourceforge.net]

Revision: 36311
          http://scummvm.svn.sourceforge.net/scummvm/?rev=36311&view=rev
Author:   fingolfin
Date:     2009-02-13 19:24:32 +0000 (Fri, 13 Feb 2009)

Log Message:
-----------
GUI: Fixed long-standing bug in calcGradient (gradients look a bit better now)

Modified Paths:
--------------
    scummvm/trunk/graphics/VectorRendererSpec.cpp

Modified: scummvm/trunk/graphics/VectorRendererSpec.cpp
===================================================================
--- scummvm/trunk/graphics/VectorRendererSpec.cpp	2009-02-13 19:22:52 UTC (rev 36310)
+++ scummvm/trunk/graphics/VectorRendererSpec.cpp	2009-02-13 19:24:32 UTC (rev 36311)
@@ -423,9 +423,9 @@
 	PixelType output = 0;
 	pos = (MIN(pos * Base::_gradientFactor, max) << 12) / max;
 
-	output |= (_gradientStart + ((Base::_gradientBytes[0] * pos) >> 12)) & _redMask;
-	output |= (_gradientStart + ((Base::_gradientBytes[1] * pos) >> 12)) & _greenMask;
-	output |= (_gradientStart + ((Base::_gradientBytes[2] * pos) >> 12)) & _blueMask;
+	output |= ((_gradientStart&_redMask) + ((Base::_gradientBytes[0] * pos) >> 12)) & _redMask;
+	output |= ((_gradientStart&_greenMask) + ((Base::_gradientBytes[1] * pos) >> 12)) & _greenMask;
+	output |= ((_gradientStart&_blueMask) + ((Base::_gradientBytes[2] * pos) >> 12)) & _blueMask;
 	output |= ~(_redMask | _greenMask | _blueMask);
 
 	return output;


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