From f41b49625511c68dadd5d0d708f31b98576c297f Mon Sep 17 00:00:00 2001
From: Johannes Schickel
Date: Thu, 30 Jul 2009 16:51:53 +0000
Subject: Fixed missing clearing of the low bit of the alpha mask in the "dim"
 screen shading function.

svn-id: r42935
---
 graphics/VectorRendererSpec.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'graphics/VectorRendererSpec.cpp')

diff --git a/graphics/VectorRendererSpec.cpp b/graphics/VectorRendererSpec.cpp
index 5e75ad6a7a..a575ee8b94 100644
--- a/graphics/VectorRendererSpec.cpp
+++ b/graphics/VectorRendererSpec.cpp
@@ -367,7 +367,9 @@ applyScreenShading(GUI::ThemeEngine::ShadingStyle shadingStyle) {
 	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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