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Merge pull request #1042 from jongleur1983/PorterDuffImprovement
small improvements on the PorterDuff functions
af/merge-core
James Jackson-South
6 years ago
committed by
GitHub
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with
2 additions and
2 deletions
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src/ImageSharp/PixelFormats/PixelBlenders/PorterDuffFunctions.cs
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@ -164,7 +164,7 @@ namespace SixLabors.ImageSharp.PixelFormats.PixelBlenders |
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float srcW = source.W - blendW; |
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// calculate final alpha
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float alpha = dstW + srcW + blendW; |
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float alpha = dstW + source.W; |
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// calculate final color
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Vector4 color = (destination * dstW) + (source * srcW) + (blend * blendW); |
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@ -191,7 +191,7 @@ namespace SixLabors.ImageSharp.PixelFormats.PixelBlenders |
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float dstW = destination.W - blendW; |
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// calculate final alpha
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float alpha = dstW + blendW; |
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float alpha = destination.W; |
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// calculate final color
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Vector4 color = (destination * dstW) + (blend * blendW); |
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