Update SkiaSharp from 2.88.8 to 3.119.2

[Copilot]

SkiaSharp 3.x removed SKBitmap.GetPixelSpan() and obsoleted SKFilterQuality, causing MissingMethodException at runtime when users bring in SkiaSharp ≥3.0 alongside Microsoft.ML.ImageAnalytics.

Changes

• Version bump: SkiaSharpVersion 2.88.8 → 3.119.2 in eng/Versions.props
• Explicit package reference: Added <PackageReference Include="SkiaSharp" /> to the csproj — SkiaSharp 3.x native asset packages no longer transitively pull in the managed library
• GetPixelSpan() removal (the crash site): Replaced with unsafe span over GetPixels() pointer:

  // Before
  return _image.GetPixelSpan();
  // After
  return new ReadOnlySpan<byte>(_image.GetPixels().ToPointer(), _image.ByteCount);

• SKFilterQuality → SKSamplingOptions:
  • ResizeFull: SKFilterQuality.None → new SKSamplingOptions(SKFilterMode.Nearest)
  • ResizeWithPadding/ResizeWithCrop: Replaced SKPaint.FilterQuality = High + DrawBitmap with DrawImage + SKSamplingOptions(SKCubicResampler.Mitchell) for equivalent high-quality resampling
  • CloneWithGrayscale: Removed obsolete FilterQuality property from SKPaint

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• 5dkvsblobprodcus355.vsblob.vsassets.io
  • Triggering command: /home/REDACTED/work/machinelearning/machinelearning/.dotnet/dotnet dotnet build src/Microsoft.ML.ImageAnalytics/Microsoft.ML.ImageAnalytics.csproj (dns block)
  • Triggering command: /home/REDACTED/work/machinelearning/machinelearning/.dotnet/dotnet dotnet restore src/Microsoft.ML.ImageAnalytics/Microsoft.ML.ImageAnalytics.csproj (dns block)
• dnceng.pkgs.visualstudio.com
  • Triggering command: /home/REDACTED/work/machinelearning/machinelearning/.dotnet/dotnet dotnet build src/Microsoft.ML.ImageAnalytics/Microsoft.ML.ImageAnalytics.csproj (dns block)
  • Triggering command: /home/REDACTED/work/machinelearning/machinelearning/.dotnet/dotnet dotnet restore src/Microsoft.ML.ImageAnalytics/Microsoft.ML.ImageAnalytics.csproj (dns block)
  • Triggering command: /usr/bin/curl curl -s -o /dev/null -w %{http_code} REDACTED (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Update to latest version of SkiaSharp</issue_title>
<issue_description>System Information (please complete the following information):

• OS & Version: Windows 10
• ML.NET Version: ML.NET v4.0.2
• .NET Version: .NET 8.0

Describe the bug

In https://github.com/dotnet/machinelearning-samples, open ObjectDetection project, explicitly depend on SkiaSharp package 3.116.1, run, and observe failure:

=====Identify the objects in the images=====

System.InvalidOperationException: Splitter/consolidator worker encountered exception while consuming source data
 ---> System.MissingMethodException: Method not found: 'System.ReadOnlySpan`1<Byte> SkiaSharp.SKBitmap.GetPixelSpan()'.
   at Microsoft.ML.Data.MLImage.get_Pixels()
   at Microsoft.ML.Transforms.Image.ImagePixelExtractingTransformer.Mapper.<>c__DisplayClass5_0`1.<GetGetterCore>b__1(VBuffer`1& dst)
   at Microsoft.ML.Transforms.Onnx.OnnxTransformer.Mapper.NamedOnnxValueGetterVec`1.GetNamedOnnxValueCore()
   at Microsoft.ML.Transforms.Onnx.OnnxTransformer.Mapper.NamedOnnxValueGetterVec`1.GetNamedOnnxValueKnownSize()
   at Microsoft.ML.Transforms.Onnx.OnnxTransformer.Mapper.NamedOnnxValueGetterVec`1.GetNamedOnnxValue()
   at Microsoft.ML.Transforms.Onnx.OnnxTransformer.Mapper.UpdateCacheIfNeeded(Int64 position, INamedOnnxValueGetter[] srcNamedOnnxValueGetters, List`1 activeOutputColNames, OnnxRuntimeOutputCacher outputCache)
   at Microsoft.ML.Transforms.Onnx.OnnxTransformer.Mapper.<>c__DisplayClass14_0`1.<MakeTensorGetter>b__0(VBuffer`1& dst)
   at Microsoft.ML.Data.DataViewUtils.Splitter.InPipe.Impl`1.Fill()
   at Microsoft.ML.Data.DataViewUtils.Splitter.<>c__DisplayClass7_1.<ConsolidateCore>b__2()
   --- End of inner exception stack trace ---
   at Microsoft.ML.Data.DataViewUtils.Splitter.Batch.SetAll(OutPipe[] pipes)
   at Microsoft.ML.Data.DataViewUtils.Splitter.Cursor.MoveNextCore()
   at Microsoft.ML.Data.RootCursorBase.MoveNext()
   at Microsoft.ML.Data.ColumnCursorExtensions.GetColumnArrayDirect[T](IDataView data, Int32 col)+MoveNext()
   at System.Linq.Enumerable.SelectEnumerableIterator`2.MoveNext()
   at System.Linq.Enumerable.TryGetElement[TSource](IEnumerable`1 source, Int32 index, TSource& element)
   at System.Linq.Enumerable.ElementAt[TSource](IEnumerable`1 source, Int32 index)
   at ObjectDection.Program.Main(String[] args) in C:\Projects\Intermediate\machinelearning-samples\samples\csharp\getting-started\DeepLearning_ObjectDetection_Onnx\ObjectDetectionConsoleApp\Program.cs:line 43
========= End of Process..Hit any Key ========

Root cause is ImageAnalytics.

To Reproduce
Steps to reproduce the behavior:

1. Download and use https://github.com/dotnet/machinelearning-samples
2. Open samples\csharp\getting-started\DeepLearning_ObjectDetection_Onnx\ObjectDetectionConsoleApp.ObjectDetection.csproj
3. Use NuGet to explicitly install SkiaSharp version 3.116.1
4. Run
5. Fail

Expected behavior

Shouldn't fail or are there alternatively/ways to configure?
Also the package dependency of ML.Net.ImageAnalytics claims SkiaSharp >2.88

Screenshots, Code, Sample Projects
See log error above.

Additional context
I am using ML.Net in a project that already depends on SkiaSharp explicitly.
</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Update to latest version of SkiaSharp #7413

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