ImageMagick.NET to GIF encoder benchmark

tests/ImageSharp.Benchmarks/Codecs/Gif/EncodeGif.cs

@@ -3,6 +3,7 @@
 
 using System.Drawing.Imaging;
 using BenchmarkDotNet.Attributes;
+using ImageMagick;
 using SixLabors.ImageSharp.Formats.Gif;
 using SixLabors.ImageSharp.PixelFormats;
 using SixLabors.ImageSharp.Processing;
@@ -18,6 +19,7 @@ public abstract class EncodeGif
     private FileStream bmpStream;
     private SDImage bmpDrawing;
     private Image<Rgba32> bmpCore;
+    private MagickImageCollection magickImage;
 
     protected abstract GifEncoder Encoder { get; }
 
@@ -29,10 +31,14 @@ public abstract class EncodeGif
     {
         if (this.bmpStream == null)
         {
-            this.bmpStream = File.OpenRead(Path.Combine(TestEnvironment.InputImagesDirectoryFullPath, this.TestImage));
+            string filePath = Path.Combine(TestEnvironment.InputImagesDirectoryFullPath, this.TestImage);
+            this.bmpStream = File.OpenRead(filePath);
             this.bmpCore = Image.Load<Rgba32>(this.bmpStream);
             this.bmpStream.Position = 0;
             this.bmpDrawing = SDImage.FromStream(this.bmpStream);
+
+            this.bmpStream.Position = 0;
+            this.magickImage = new MagickImageCollection(this.bmpStream);
         }
     }
 
@@ -43,6 +49,7 @@ public abstract class EncodeGif
         this.bmpStream = null;
         this.bmpCore.Dispose();
         this.bmpDrawing.Dispose();
+        this.magickImage.Dispose();
     }
 
     [Benchmark(Baseline = true, Description = "System.Drawing Gif")]
@@ -58,6 +65,13 @@ public abstract class EncodeGif
         using MemoryStream memoryStream = new();
         this.bmpCore.SaveAsGif(memoryStream, this.Encoder);
     }
+
+    [Benchmark(Description = "Magick.NET Gif")]
+    public void GifMagickNet()
+    {
+        using MemoryStream ms = new();
+        this.magickImage.Write(ms, MagickFormat.Gif);
+    }
 }
 
 public class EncodeGif_DefaultEncoder : EncodeGif