SpaceCheetah
2 years ago
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GPG Key ID: A60F20D29141DFF9
1 changed files with
2 additions and
1 deletions
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src/ImageSharp/Formats/Png/PngDecoderCore.cs
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@ -648,7 +648,8 @@ internal sealed class PngDecoderCore : IImageDecoderInternals |
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{ |
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frame = image.Frames.AddFrame(previousFrame ?? image.Frames.RootFrame); |
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// If restoring to before first frame, restore to background. Same if first frame (previousFrameControl null).
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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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// So, if restoring to before first frame, clear entire area. Same if first frame (previousFrameControl null).
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if (previousFrameControl == null || (previousFrame is null && previousFrameControl.Value.DisposeOperation == PngDisposalMethod.RestoreToPrevious)) |
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{ |
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Buffer2DRegion<TPixel> pixelRegion = frame.PixelBuffer.GetRegion(); |
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