Add test case for pxr compression with pixel type uint

tests/ImageSharp.Tests/Formats/Exr/ExrDecoderTests.cs

@@ -130,6 +130,18 @@ public class ExrDecoderTests
         image.CompareToOriginal(provider, ImageComparer.Exact, ReferenceDecoder);
     }
 
+    [Theory]
+    [WithFile(TestImages.Exr.Pxr24Uint, PixelTypes.Rgba32)]
+    public void ExrDecoder_CanDecode_Pxr24Compressed_ExrPixelType_Uint<TPixel>(TestImageProvider<TPixel> provider)
+        where TPixel : unmanaged, IPixel<TPixel>
+    {
+        using Image<TPixel> image = provider.GetImage(ExrDecoder.Instance);
+        image.DebugSave(provider);
+
+        // Compare to Reference here instead using the reference decoder, since uint pixel type is not supported by the Reference decoder.
+        image.CompareToReferenceOutput(provider);
+    }
+
     [Theory]
     [WithFile(TestImages.Exr.B44, PixelTypes.Rgba32)]
     public void ExrDecoder_CanDecode_B44Compressed<TPixel>(TestImageProvider<TPixel> provider)

tests/ImageSharp.Tests/TestImages.cs

@@ -1397,6 +1397,7 @@ public static class TestImages
         public const string B44 = "Exr/Calliphora_b44.exr";
         public const string Pxr24Half = "Exr/Calliphora_half_pxr24.exr";
         public const string Pxr24Float = "Exr/Calliphora_float_pxr24.exr";
+        public const string Pxr24Uint = "Exr/Calliphora_uint_pxr24.exr";
         public const string Rgb = "Exr/Calliphora_rgb.exr";
         public const string Gray = "Exr/Calliphora_gray.exr";
     }

tests/Images/External/ReferenceOutput/ExrDecoderTests/ExrDecoder_CanDecode_Pxr24Compressed_ExrPixelType_Uint_Rgba32_Calliphora_uint_pxr24.png

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f66bf45b5d80e412314341567b8cf240d56b5872f01ce9f3b0d6034d85e8e942
+size 163327

tests/Images/Input/Exr/Calliphora_uint_pxr24.exr

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:fc72685224ba818ac77d914f5e4c91162503f88f775e16b5c745baef6bc7b790
+size 187914