Implement platform options for Skia.

src/Skia/Avalonia.Skia/SkiaApplicationExtensions.cs

@@ -1,7 +1,6 @@
 // Copyright (c) The Avalonia Project. All rights reserved.
 // Licensed under the MIT license. See licence.md file in the project root for full license information.
 
-using System;
 using Avalonia.Controls;
 using Avalonia.Skia;
 
@@ -19,12 +18,11 @@ namespace Avalonia
         /// <typeparam name="T">Builder type.</typeparam>
         /// <param name="builder">Builder.</param>
         /// <returns>Configure builder.</returns>
-        public static T UseSkia<T>(this T builder, Func<ICustomSkiaGpu> gpuFactory = null) where T : AppBuilderBase<T>, new()
+        public static T UseSkia<T>(this T builder) where T : AppBuilderBase<T>, new()
         {
-            var customGpu = gpuFactory?.Invoke();
-
-            builder.UseRenderingSubsystem(() => SkiaPlatform.Initialize(customGpu), "Skia");
-            return builder;
+            return builder.UseRenderingSubsystem(() => SkiaPlatform.Initialize(
+                AvaloniaLocator.Current.GetService<SkiaOptions>() ?? new SkiaOptions()),
+                "Skia");
         }
     }
 }

src/Skia/Avalonia.Skia/SkiaOptions.cs

@@ -0,0 +1,19 @@
+// Copyright (c) The Avalonia Project. All rights reserved.
+// Licensed under the MIT license. See licence.md file in the project root for full license information.
+
+using System;
+using Avalonia.Skia;
+
+namespace Avalonia
+{
+    /// <summary>
+    /// Options for Skia rendering subsystem.
+    /// </summary>
+    public class SkiaOptions
+    {
+        /// <summary>
+        /// Custom gpu factory to use. Can be used to customize behavior of Skia renderer.
+        /// </summary>
+        public Func<ICustomSkiaGpu> CustomGpuFactory { get; set; }
+    }
+}

src/Skia/Avalonia.Skia/SkiaPlatform.cs

@@ -13,8 +13,14 @@ namespace Avalonia.Skia
         /// <summary>
         /// Initialize Skia platform.
         /// </summary>
-        public static void Initialize(ICustomSkiaGpu customGpu = null)
+        public static void Initialize()
         {
+            Initialize(new SkiaOptions());
+        }
+
+        public static void Initialize(SkiaOptions options)
+        {
+            var customGpu = options.CustomGpuFactory?.Invoke();
             var renderInterface = new PlatformRenderInterface(customGpu);
 
             AvaloniaLocator.CurrentMutable