From 848013921281a7381ea4328f4f3d37f3587b01bf Mon Sep 17 00:00:00 2001
From: SpaceCheetah <space-cheetah@hotmail.com>
Date: Mon, 1 Apr 2024 17:56:21 -0700
Subject: [PATCH] re-add rest of comment

---
 src/ImageSharp/Formats/Png/PngDecoderCore.cs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/ImageSharp/Formats/Png/PngDecoderCore.cs b/src/ImageSharp/Formats/Png/PngDecoderCore.cs
index dd2ce9eb14..1afb65566d 100644
--- a/src/ImageSharp/Formats/Png/PngDecoderCore.cs
+++ b/src/ImageSharp/Formats/Png/PngDecoderCore.cs
@@ -646,6 +646,9 @@ internal sealed class PngDecoderCore : IImageDecoderInternals
         out ImageFrame<TPixel> frame)
         where TPixel : unmanaged, IPixel<TPixel>
     {
+        // We create a clone of the previous frame and add it.
+        // We will overpaint the difference of pixels on the current frame to create a complete image.
+        // This ensures that we have enough pixel data to process without distortion. #2450
         frame = image.Frames.AddFrame(previousFrame ?? image.Frames.RootFrame);
 
         // If the first `fcTL` chunk uses a `dispose_op` of APNG_DISPOSE_OP_PREVIOUS it should be treated as APNG_DISPOSE_OP_BACKGROUND.