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Painter: Fixed rounding issue for alpha

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git-svn-id: svn://ultimatepp.org/upp/trunk@6692 f0d560ea-af0d-0410-9eb7-867de7ffcac7
This commit is contained in:
cxl 2013-12-23 13:34:49 +00:00
parent 0b078b9128
commit 78679ca221
1 changed files with 1 additions and 1 deletions
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uppsrc/Painter/BufferPainter.h
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@ -93,7 +93,7 @@ inline void AlphaBlend(RGBA& t, const RGBA& c)
t.r = c.r + (alpha * t.r >> 8);
t.g = c.g + (alpha * t.g >> 8);
t.b = c.b + (alpha * t.b >> 8);
t.a = c.a + (alpha * t.a >> 8);
t.a = c.a + ((256 - c.a) * t.a >> 8);
}
inline void AlphaBlendCover8(RGBA& t, const RGBA& c, int cover)