[Scummvm-cvs-logs] SF.net SVN: scummvm:[42935] scummvm/trunk/graphics/VectorRendererSpec.cpp

[lordhoto at users.sourceforge.net]

Revision: 42935
          http://scummvm.svn.sourceforge.net/scummvm/?rev=42935&view=rev
Author:   lordhoto
Date:     2009-07-30 16:51:53 +0000 (Thu, 30 Jul 2009)

Log Message:
-----------
Fixed missing clearing of the low bit of the alpha mask in the "dim" screen shading function.

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

Modified: scummvm/trunk/graphics/VectorRendererSpec.cpp
===================================================================
--- scummvm/trunk/graphics/VectorRendererSpec.cpp	2009-07-30 16:43:25 UTC (rev 42934)
+++ scummvm/trunk/graphics/VectorRendererSpec.cpp	2009-07-30 16:51:53 UTC (rev 42935)
@@ -367,7 +367,9 @@
 	uint lum;
 
 	// Mask to clear the last bit of every color component and all unused bits
-	const uint32 colorMask = ~((1 << _format.rShift) | (1 << _format.gShift) | (1 << _format.bShift) | ~(_alphaMask | _redMask | _greenMask | _blueMask));
+	const uint32 colorMask = ~((1 << _format.rShift) | (1 << _format.gShift) | (1 << _format.bShift) // R/G/B components
+			| (_format.aLoss == 8 ? 0 : (1 << _format.aShift)) // Alpha component
+			| ~(_alphaMask | _redMask | _greenMask | _blueMask)); // All unused bits
 
 	if (shadingStyle == GUI::ThemeEngine::kShadingDim) {
 


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