SpaceCheetah
2 years ago
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1 changed files with
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src/ImageSharp/Formats/Png/PngDecoderCore.cs
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@ -652,6 +652,9 @@ internal sealed class PngDecoderCore : IImageDecoderInternals |
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out ImageFrame<TPixel> frame) |
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where TPixel : unmanaged, IPixel<TPixel> |
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{ |
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// We create a clone of the previous frame and add it.
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// We will overpaint the difference of pixels on the current frame to create a complete image.
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// This ensures that we have enough pixel data to process without distortion. #2450
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frame = image.Frames.AddFrame(previousFrame ?? image.Frames.RootFrame); |
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// If the first `fcTL` chunk uses a `dispose_op` of APNG_DISPOSE_OP_PREVIOUS it should be treated as APNG_DISPOSE_OP_BACKGROUND.
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