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Fix random thunder activation caused by rounding error in setup interpolation
--HG-- branch : develop
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1 changed files with 7 additions and 1 deletions
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@ -3106,11 +3106,17 @@ bool CBitmap::blit(const CBitmap *src, sint32 x, sint32 y)
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// Private :
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float CBitmap::getColorInterp (float x, float y, float colorInXY00, float colorInXY10, float colorInXY01, float colorInXY11) const
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{
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if (colorInXY00 == colorInXY10
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&& colorInXY00 == colorInXY01
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&& colorInXY00 == colorInXY11)
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return colorInXY00; // Fix rounding error for alpha 255...
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float res = colorInXY00*(1.0f-x)*(1.0f-y) +
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colorInXY10*( x)*(1.0f-y) +
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colorInXY01*(1.0f-x)*( y) +
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colorInXY11*( x)*( y);
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clamp (res, 0.0f, 255.0f);
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clamp(res, 0.0f, 255.0f);
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return res;
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}
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