From a58ef4bdb70e9421823b3bb4c6d86b28195073c0 Mon Sep 17 00:00:00 2001 From: SpaceCheetah Date: Thu, 28 Mar 2024 13:50:40 -1000 Subject: [PATCH] Fix ProcessInterlacedPaletteScanline not obeying frameControl.XOffset --- src/ImageSharp/Formats/Png/PngScanlineProcessor.cs | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/src/ImageSharp/Formats/Png/PngScanlineProcessor.cs b/src/ImageSharp/Formats/Png/PngScanlineProcessor.cs index aa937a8e2a..0f530b478e 100644 --- a/src/ImageSharp/Formats/Png/PngScanlineProcessor.cs +++ b/src/ImageSharp/Formats/Png/PngScanlineProcessor.cs @@ -180,8 +180,9 @@ internal static class PngScanlineProcessor ref byte scanlineSpanRef = ref MemoryMarshal.GetReference(scanlineSpan); ref TPixel rowSpanRef = ref MemoryMarshal.GetReference(rowSpan); ref Color paletteBase = ref MemoryMarshal.GetReference(palette.Value.Span); + uint offset = pixelOffset + frameControl.XOffset; - for (nuint x = pixelOffset, o = 0; x < frameControl.XMax; x += increment, o++) + for (nuint x = offset, o = 0; x < frameControl.XMax; x += increment, o++) { uint index = Unsafe.Add(ref scanlineSpanRef, o); Unsafe.Add(ref rowSpanRef, x) = TPixel.FromRgba32(Unsafe.Add(ref paletteBase, index).ToPixel());