Register renderer factory for the rest of the platforms

src/Android/Avalonia.Android/AndroidPlatform.cs

@@ -53,6 +53,7 @@ namespace Avalonia.Android
                 .Bind<IKeyboardDevice>().ToSingleton<AndroidKeyboardDevice>()
                 .Bind<IMouseDevice>().ToSingleton<AndroidMouseDevice>()
                 .Bind<IPlatformSettings>().ToConstant(Instance)
+                .Bind<IRendererFactory>().ToConstant(ImmediateRenderer.Factory)
                 .Bind<IPlatformThreadingInterface>().ToConstant(new AndroidThreadingInterface())
                 .Bind<ISystemDialogImpl>().ToTransient<SystemDialogImpl>()
                 .Bind<IWindowingPlatform>().ToConstant(Instance)

src/Avalonia.Visuals/Rendering/ImmediateRenderer.cs

@@ -20,6 +20,11 @@ namespace Avalonia.Rendering
     /// </remarks>
     public class ImmediateRenderer : RendererBase, IRenderer, IVisualBrushRenderer
     {
+        class ImmediateRendererFactory : IRendererFactory
+        {
+            public IRenderer CreateRenderer(IRenderRoot root, IRenderLoop renderLoop) => new ImmediateRenderer(root);
+        }
+
         private readonly IVisual _root;
         private readonly IRenderRoot _renderRoot;
         private IRenderTarget _renderTarget;
@@ -36,6 +41,8 @@ namespace Avalonia.Rendering
             _renderRoot = root as IRenderRoot;
         }
 
+        public static IRendererFactory Factory { get; } = new ImmediateRendererFactory();
+
         /// <inheritdoc/>
         public bool DrawFps { get; set; }
 

src/Gtk/Avalonia.Gtk3/Gtk3Platform.cs

@@ -39,6 +39,7 @@ namespace Avalonia.Gtk3
                 .Bind<IPlatformThreadingInterface>().ToConstant(Instance)
                 .Bind<ISystemDialogImpl>().ToSingleton<SystemDialog>()
                 .Bind<IRenderLoop>().ToConstant(new DefaultRenderLoop(60))
+                .Bind<IRendererFactory>().ToConstant(ImmediateRenderer.Factory)
                 .Bind<IPlatformIconLoader>().ToConstant(new PlatformIconLoader());
 
         }

src/Linux/Avalonia.LinuxFramebuffer/LinuxFramebufferPlatform.cs

@@ -35,6 +35,7 @@ namespace Avalonia.LinuxFramebuffer
                 .Bind<IKeyboardDevice>().ToConstant(KeyboardDevice)
                 .Bind<IMouseDevice>().ToConstant(MouseDevice)
                 .Bind<IPlatformSettings>().ToSingleton<PlatformSettings>()
+                .Bind<IRendererFactory>().ToConstant(ImmediateRenderer.Factory)
                 .Bind<IPlatformThreadingInterface>().ToConstant(PlatformThreadingInterface.Instance)
                 .Bind<IRenderLoop>().ToConstant(PlatformThreadingInterface.Instance);
         }

src/iOS/Avalonia.iOS/iOSPlatform.cs

@@ -58,6 +58,7 @@ namespace Avalonia.iOS
                 .Bind<IStandardCursorFactory>().ToTransient<CursorFactory>()
                 .Bind<IKeyboardDevice>().ToConstant(KeyboardDevice)
                 .Bind<IMouseDevice>().ToConstant(MouseDevice)
+                .Bind<IRendererFactory>().ToConstant(ImmediateRenderer.Factory)
                 .Bind<IPlatformSettings>().ToSingleton<PlatformSettings>()
                 .Bind<IPlatformThreadingInterface>().ToConstant(PlatformThreadingInterface.Instance)
                 .Bind<IPlatformIconLoader>().ToSingleton<PlatformIconLoader>()