Merge branch 'master' into opt-children-notifications

build/ApiDiff.props

@@ -1,6 +1,6 @@
 <Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
-    <ApiContractPackageVersion>0.10.0-preview3</ApiContractPackageVersion>
+    <ApiContractPackageVersion>0.10.0-preview6</ApiContractPackageVersion>
     <NugetPackageName Condition="'$(PackageId)' != ''">$(PackageId)</NugetPackageName>
     <NugetPackageName Condition="'$(PackageId)' == ''">Avalonia</NugetPackageName>
   </PropertyGroup>

build/Rx.props

@@ -1,5 +1,5 @@
 <Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup>
-    <PackageReference Include="System.Reactive" Version="4.4.1" />
+    <PackageReference Include="System.Reactive" Version="5.0" />
   </ItemGroup>
 </Project>

nukebuild/Build.cs

@@ -107,7 +107,7 @@ partial class Build : NukeBuild
                 .AddProperty("JavaSdkDirectory", GetVariable<string>("JAVA_HOME_8_X64")))
             .AddProperty("PackageVersion", Parameters.Version)
             .AddProperty("iOSRoslynPathHackRequired", true)
-            .SetToolPath(MsBuildExe.Value)
+            .SetProcessToolPath(MsBuildExe.Value)
             .SetConfiguration(Parameters.Configuration)
             .SetVerbosity(MSBuildVerbosity.Minimal)
             .Apply(configurator));
@@ -132,10 +132,10 @@ partial class Build : NukeBuild
             var webappDir = RootDirectory / "src" / "Avalonia.DesignerSupport" / "Remote" / "HtmlTransport" / "webapp";
 
             NpmTasks.NpmInstall(c => c
-                .SetWorkingDirectory(webappDir)
-                .SetArgumentConfigurator(a => a.Add("--silent")));
+                .SetProcessWorkingDirectory(webappDir)
+                .SetProcessArgumentConfigurator(a => a.Add("--silent")));
             NpmTasks.NpmRun(c => c
-                .SetWorkingDirectory(webappDir)
+                .SetProcessWorkingDirectory(webappDir)
                 .SetCommand("dist"));
         });
 
@@ -157,7 +157,7 @@ partial class Build : NukeBuild
         {
             if (Parameters.IsRunningOnWindows)
                 MsBuildCommon(Parameters.MSBuildSolution, c => c
-                    .SetArgumentConfigurator(a => a.Add("/r"))
+                    .SetProcessArgumentConfigurator(a => a.Add("/r"))
                     .AddTargets("Build")
                 );
 
@@ -194,7 +194,7 @@ partial class Build : NukeBuild
         var eventsProject = Path.Combine(eventsDirectory, "Avalonia.ReactiveUI.Events.csproj");
         if (Parameters.IsRunningOnWindows)
             MsBuildCommon(eventsProject, c => c
-                .SetArgumentConfigurator(a => a.Add("/r"))
+                .SetProcessArgumentConfigurator(a => a.Add("/r"))
                 .AddTargets("Build")
             );
         else
@@ -242,10 +242,10 @@ partial class Build : NukeBuild
             var webappTestDir = RootDirectory / "tests" / "Avalonia.DesignerSupport.Tests" / "Remote" / "HtmlTransport" / "webapp";
 
             NpmTasks.NpmInstall(c => c
-                .SetWorkingDirectory(webappTestDir)
-                .SetArgumentConfigurator(a => a.Add("--silent")));
+                .SetProcessWorkingDirectory(webappTestDir)
+                .SetProcessArgumentConfigurator(a => a.Add("--silent")));
             NpmTasks.NpmRun(c => c
-                .SetWorkingDirectory(webappTestDir)
+                .SetProcessWorkingDirectory(webappTestDir)
                 .SetCommand("test"));
         });
 

nukebuild/_build.csproj

@@ -10,7 +10,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Nuke.Common" Version="0.24.0" />
+    <PackageReference Include="Nuke.Common" Version="5.0.0" />
     <PackageReference Include="xunit.runner.console" Version="2.3.1" />
     <PackageReference Include="JetBrains.dotMemoryUnit" Version="3.0.20171219.105559" />
     <PackageReference Include="vswhere" Version="2.6.7" Condition=" '$(OS)' == 'Windows_NT' " />

src/Avalonia.Base/Utilities/MathUtilities.cs

@@ -5,7 +5,10 @@ namespace Avalonia.Utilities
     /// <summary>
     /// Provides math utilities not provided in System.Math.
     /// </summary>
-    public static class MathUtilities
+#if !BUILDTASK
+    public
+#endif
+    static class MathUtilities
     {
         // smallest such that 1.0+DoubleEpsilon != 1.0
         internal static readonly double DoubleEpsilon = 2.2204460492503131e-016;

src/Avalonia.Base/Utilities/StringTokenizer.cs

@@ -4,7 +4,10 @@ using static System.Char;
 
 namespace Avalonia.Utilities
 {
-    public struct StringTokenizer : IDisposable
+#if !BUILDTASK
+    public
+#endif
+    struct StringTokenizer : IDisposable
     {
         private const char DefaultSeparatorChar = ',';
 

src/Avalonia.Build.Tasks/Avalonia.Build.Tasks.csproj

@@ -45,6 +45,12 @@
       <Compile Include="../Avalonia.Base/Utilities/IdentifierParser.cs">
         <Link>Markup/%(RecursiveDir)%(FileName)%(Extension)</Link>
       </Compile>
+      <Compile Include="../Avalonia.Base/Utilities/StringTokenizer.cs">
+        <Link>Markup/%(RecursiveDir)%(FileName)%(Extension)</Link>
+      </Compile>
+      <Compile Include="../Avalonia.Base/Utilities/MathUtilities.cs">
+        <Link>Markup/%(RecursiveDir)%(FileName)%(Extension)</Link>
+      </Compile>
       <Compile Include="..\Markup\Avalonia.Markup\Markup\Parsers\ArgumentListParser.cs">
         <Link>Markup/%(RecursiveDir)%(FileName)%(Extension)</Link>
       </Compile>
@@ -57,6 +63,24 @@
       <Compile Include="../Avalonia.Base/Utilities/StyleClassParser.cs">
         <Link>Markup/%(RecursiveDir)%(FileName)%(Extension)</Link>
       </Compile>
+      <Compile Include="../Avalonia.Visuals/Thickness.cs">
+        <Link>Markup/%(RecursiveDir)%(FileName)%(Extension)</Link>
+      </Compile>
+      <Compile Include="../Avalonia.Visuals/Size.cs">
+        <Link>Markup/%(RecursiveDir)%(FileName)%(Extension)</Link>
+      </Compile>
+      <Compile Include="../Avalonia.Visuals/Vector.cs">
+        <Link>Markup/%(RecursiveDir)%(FileName)%(Extension)</Link>
+      </Compile>
+      <Compile Include="../Avalonia.Visuals/Point.cs">
+        <Link>Markup/%(RecursiveDir)%(FileName)%(Extension)</Link>
+      </Compile>
+      <Compile Include="../Avalonia.Visuals/Matrix.cs">
+        <Link>Markup/%(RecursiveDir)%(FileName)%(Extension)</Link>
+      </Compile>
+      <Compile Include="../Avalonia.Visuals/CornerRadius.cs">
+        <Link>Markup/%(RecursiveDir)%(FileName)%(Extension)</Link>
+      </Compile>
       <Compile Remove="../Markup/Avalonia.Markup.Xaml.Loader\xamlil.github\**\obj\**\*.cs" />
       <Compile Remove="../Markup/Avalonia.Markup.Xaml.Loader\xamlil.github\src\XamlX\IL\SreTypeSystem.cs" />
       <PackageReference Include="Mono.Cecil" Version="0.11.2" />

src/Avalonia.Build.Tasks/XamlCompilerTaskExecutor.cs

@@ -46,7 +46,9 @@ namespace Avalonia.Build.Tasks
             string output, bool verifyIl, MessageImportance logImportance, string strongNameKey, bool patchCom,
             bool skipXamlCompilation)
         {
-            var typeSystem = new CecilTypeSystem(references.Concat(new[] { input }), input);
+            var typeSystem = new CecilTypeSystem(references
+                .Where(r => !r.ToLowerInvariant().EndsWith("avalonia.build.tasks.dll"))
+                .Concat(new[] { input }), input);
             
             var asm = typeSystem.TargetAssemblyDefinition;
 

src/Avalonia.Controls/ComboBox.cs

@@ -173,11 +173,10 @@ namespace Avalonia.Controls
                 ComboBoxItem.ContentTemplateProperty);
         }
 
-        /// <inheritdoc/>
-        protected override void OnAttachedToLogicalTree(LogicalTreeAttachmentEventArgs e)
+        protected override void OnAttachedToVisualTree(VisualTreeAttachmentEventArgs e)
         {
-            base.OnAttachedToLogicalTree(e);
-            this.UpdateSelectionBoxItem(this.SelectedItem);
+            base.OnAttachedToVisualTree(e);
+            this.UpdateSelectionBoxItem(SelectedItem);
         }
 
         /// <inheritdoc/>
@@ -373,19 +372,22 @@ namespace Avalonia.Controls
 
             if (control != null)
             {
-                control.Measure(Size.Infinity);
-
-                SelectionBoxItem = new Rectangle
+                if (VisualRoot is object)
                 {
-                    Width = control.DesiredSize.Width,
-                    Height = control.DesiredSize.Height,
-                    Fill = new VisualBrush
+                    control.Measure(Size.Infinity);
+
+                    SelectionBoxItem = new Rectangle
                     {
-                        Visual = control,
-                        Stretch = Stretch.None,
-                        AlignmentX = AlignmentX.Left,
-                    }
-                };
+                        Width = control.DesiredSize.Width,
+                        Height = control.DesiredSize.Height,
+                        Fill = new VisualBrush
+                        {
+                            Visual = control,
+                            Stretch = Stretch.None,
+                            AlignmentX = AlignmentX.Left,
+                        }
+                    };
+                }
             }
             else
             {

src/Avalonia.Visuals/CornerRadius.cs

@@ -1,6 +1,8 @@
 using System;
 using System.Globalization;
+#if !BUILDTASK
 using Avalonia.Animation.Animators;
+#endif
 using Avalonia.Utilities;
 
 namespace Avalonia
@@ -8,11 +10,16 @@ namespace Avalonia
     /// <summary>
     /// Represents the radii of a rectangle's corners.
     /// </summary>
-    public readonly struct CornerRadius : IEquatable<CornerRadius>
+#if !BUILDTASK
+    public
+#endif
+    readonly struct CornerRadius : IEquatable<CornerRadius>
     {
         static CornerRadius()
         {
+#if !BUILDTASK
             Animation.Animation.RegisterAnimator<CornerRadiusAnimator>(prop => typeof(CornerRadius).IsAssignableFrom(prop.PropertyType));
+#endif
         }
 
         public CornerRadius(double uniformRadius)

src/Avalonia.Visuals/Matrix.cs

@@ -7,7 +7,10 @@ namespace Avalonia
     /// <summary>
     /// A 2x3 matrix.
     /// </summary>
-    public readonly struct Matrix : IEquatable<Matrix>
+#if !BUILDTASK
+    public
+#endif
+    readonly struct Matrix : IEquatable<Matrix>
     {
         private readonly double _m11;
         private readonly double _m12;

src/Avalonia.Visuals/Point.cs

@@ -1,6 +1,8 @@
 using System;
 using System.Globalization;
+#if !BUILDTASK
 using Avalonia.Animation.Animators;
+#endif
 using Avalonia.Utilities;
 
 namespace Avalonia
@@ -8,11 +10,16 @@ namespace Avalonia
     /// <summary>
     /// Defines a point.
     /// </summary>
-    public readonly struct Point : IEquatable<Point>
+#if !BUILDTASK
+    public
+#endif
+    readonly struct Point : IEquatable<Point>
     {
         static Point()
         {
+#if !BUILDTASK
             Animation.Animation.RegisterAnimator<PointAnimator>(prop => typeof(Point).IsAssignableFrom(prop.PropertyType));
+#endif
         }
 
         /// <summary>

src/Avalonia.Visuals/Rendering/SceneGraph/SceneBuilder.cs

@@ -24,7 +24,8 @@ namespace Avalonia.Rendering.SceneGraph
             using (var impl = new DeferredDrawingContextImpl(this, scene.Layers))
             using (var context = new DrawingContext(impl))
             {
-                Update(context, scene, (VisualNode)scene.Root, scene.Root.Visual.Bounds, true);
+                var clip = new Rect(scene.Root.Visual.Bounds.Size);
+                Update(context, scene, (VisualNode)scene.Root, clip, true);
             }
         }
 
@@ -77,7 +78,7 @@ namespace Avalonia.Rendering.SceneGraph
                         using (var impl = new DeferredDrawingContextImpl(this, scene.Layers))
                         using (var context = new DrawingContext(impl))
                         {
-                            var clip = scene.Root.Visual.Bounds;
+                            var clip = new Rect(scene.Root.Visual.Bounds.Size);
 
                             if (node.Parent != null)
                             {
@@ -174,7 +175,9 @@ namespace Avalonia.Rendering.SceneGraph
 
             if (visual.IsVisible)
             {
-                var m = Matrix.CreateTranslation(visual.Bounds.Position);
+                var m = node != scene.Root ? 
+                    Matrix.CreateTranslation(visual.Bounds.Position) :
+                    Matrix.Identity;
 
                 var renderTransform = Matrix.Identity;
 

src/Avalonia.Visuals/Size.cs

@@ -1,6 +1,8 @@
 using System;
 using System.Globalization;
+#if !BUILDTASK
 using Avalonia.Animation.Animators;
+#endif
 using Avalonia.Utilities;
 
 namespace Avalonia
@@ -8,11 +10,16 @@ namespace Avalonia
     /// <summary>
     /// Defines a size.
     /// </summary>
-    public readonly struct Size : IEquatable<Size>
+#if !BUILDTASK
+    public
+#endif
+    readonly struct Size : IEquatable<Size>
     {
         static Size()
         {
+#if !BUILDTASK
             Animation.Animation.RegisterAnimator<SizeAnimator>(prop => typeof(Size).IsAssignableFrom(prop.PropertyType));
+#endif
         }
 
         /// <summary>

src/Avalonia.Visuals/Thickness.cs

@@ -1,6 +1,8 @@
 using System;
 using System.Globalization;
+#if !BUILDTASK
 using Avalonia.Animation.Animators;
+#endif
 using Avalonia.Utilities;
 
 namespace Avalonia
@@ -8,11 +10,16 @@ namespace Avalonia
     /// <summary>
     /// Describes the thickness of a frame around a rectangle.
     /// </summary>
-    public readonly struct Thickness : IEquatable<Thickness>
+#if !BUILDTASK
+    public
+#endif
+    readonly struct Thickness : IEquatable<Thickness>
     {
         static Thickness()
         {
+#if !BUILDTASK
             Animation.Animation.RegisterAnimator<ThicknessAnimator>(prop => typeof(Thickness).IsAssignableFrom(prop.PropertyType));
+#endif
         }
 
         /// <summary>

src/Avalonia.Visuals/Vector.cs

@@ -1,6 +1,8 @@
 using System;
 using System.Globalization;
+#if !BUILDTASK
 using Avalonia.Animation.Animators;
+#endif
 using Avalonia.Utilities;
 
 #nullable enable
@@ -10,11 +12,16 @@ namespace Avalonia
     /// <summary>
     /// Defines a vector.
     /// </summary>
-    public readonly struct Vector : IEquatable<Vector>
+#if !BUILDTASK
+    public
+#endif
+    readonly struct Vector : IEquatable<Vector>
     {
         static Vector()
         {
+#if !BUILDTASK
             Animation.Animation.RegisterAnimator<VectorAnimator>(prop => typeof(Vector).IsAssignableFrom(prop.PropertyType));
+#endif
         }
 
         /// <summary>

src/Markup/Avalonia.Markup.Xaml.Loader/Avalonia.Markup.Xaml.Loader.csproj

@@ -4,6 +4,7 @@
     <TargetFramework>netstandard2.0</TargetFramework>
     <IsPackable>true</IsPackable>
     <PackageId>Avalonia.Markup.Xaml.Loader</PackageId>
+    <DefineConstants>$(DefineConstants);XAMLX_INTERNAL</DefineConstants>
   </PropertyGroup>
   <Import Project="IncludeXamlIlSre.props" />
   <ItemGroup>

src/Markup/Avalonia.Markup.Xaml.Loader/CompilerExtensions/AstNodes/AvaloniaXamlIlVectorLikeConstantAstNode.cs

@@ -0,0 +1,54 @@
+using Avalonia.Markup.Xaml.XamlIl.CompilerExtensions.Transformers;
+using XamlX;
+using XamlX.Ast;
+using XamlX.Emit;
+using XamlX.IL;
+using XamlX.TypeSystem;
+
+namespace Avalonia.Markup.Xaml.XamlIl.CompilerExtensions.AstNodes
+{
+    class AvaloniaXamlIlVectorLikeConstantAstNode : XamlAstNode, IXamlAstValueNode, IXamlAstILEmitableNode
+    {
+        private readonly IXamlConstructor _constructor;
+        private readonly double[] _values;
+
+        public AvaloniaXamlIlVectorLikeConstantAstNode(IXamlLineInfo lineInfo, AvaloniaXamlIlWellKnownTypes types, IXamlType type, IXamlConstructor constructor, double[] values) : base(lineInfo)
+        {
+            var parameters = constructor.Parameters;
+
+            if (parameters.Count != values.Length)
+            {
+                throw new XamlTypeSystemException($"Constructor that takes {values.Length} parameters is expected, got {parameters.Count} instead.");
+            }
+
+            var elementType = types.XamlIlTypes.Double;
+
+            foreach (var parameter in parameters)
+            {
+                if (parameter != elementType)
+                {
+                    throw new XamlTypeSystemException($"Expected parameter of type {elementType}, got {parameter} instead.");
+                }
+            }
+            
+            _constructor = constructor;
+            _values = values;
+            
+            Type = new XamlAstClrTypeReference(lineInfo, type, false);
+        }
+        
+        public IXamlAstTypeReference Type { get; }
+        
+        public XamlILNodeEmitResult Emit(XamlEmitContext<IXamlILEmitter, XamlILNodeEmitResult> context, IXamlILEmitter codeGen)
+        {
+            foreach (var value in _values)
+            {
+                codeGen.Ldc_R8(value);
+            }
+            
+            codeGen.Newobj(_constructor);
+            
+            return XamlILNodeEmitResult.Type(0, Type.GetClrType());
+        }
+    }
+}

src/Markup/Avalonia.Markup.Xaml.Loader/CompilerExtensions/AvaloniaXamlIlLanguage.cs

@@ -205,6 +205,66 @@ namespace Avalonia.Markup.Xaml.XamlIl.CompilerExtensions
                 result = new AvaloniaXamlIlFontFamilyAstNode(types, text, node);
                 return true;
             }
+            
+            if (type.Equals(types.Thickness))
+            {
+                var thickness = Thickness.Parse(text);
+
+                result = new AvaloniaXamlIlVectorLikeConstantAstNode(node, types, types.Thickness, types.ThicknessFullConstructor,
+                    new[] { thickness.Left, thickness.Top, thickness.Right, thickness.Bottom });
+                
+                return true;
+            }
+
+            if (type.Equals(types.Point))
+            {
+                var point = Point.Parse(text);
+
+                result = new AvaloniaXamlIlVectorLikeConstantAstNode(node, types, types.Point, types.PointFullConstructor,
+                    new[] { point.X, point.Y });
+                
+                return true;
+            }
+            
+            if (type.Equals(types.Vector))
+            {
+                var vector = Vector.Parse(text);
+
+                result = new AvaloniaXamlIlVectorLikeConstantAstNode(node, types, types.Vector, types.VectorFullConstructor,
+                    new[] { vector.X, vector.Y });
+                
+                return true;
+            }
+            
+            if (type.Equals(types.Size))
+            {
+                var size = Size.Parse(text);
+
+                result = new AvaloniaXamlIlVectorLikeConstantAstNode(node, types, types.Size, types.SizeFullConstructor,
+                    new[] { size.Width, size.Height });
+                
+                return true;
+            }
+            
+            if (type.Equals(types.Matrix))
+            {
+                var matrix = Matrix.Parse(text);
+
+                result = new AvaloniaXamlIlVectorLikeConstantAstNode(node, types, types.Matrix, types.MatrixFullConstructor,
+                    new[] { matrix.M11, matrix.M12, matrix.M21, matrix.M22, matrix.M31, matrix.M32 });
+                
+                return true;
+            }
+            
+            if (type.Equals(types.CornerRadius))
+            {
+                var cornerRadius = CornerRadius.Parse(text);
+
+                result = new AvaloniaXamlIlVectorLikeConstantAstNode(node, types, types.CornerRadius, types.CornerRadiusFullConstructor,
+                    new[] { cornerRadius.TopLeft, cornerRadius.TopRight, cornerRadius.BottomRight, cornerRadius.BottomLeft });
+                
+                return true;
+            }
 
             if (type.FullName == "Avalonia.AvaloniaProperty")
             {

src/Markup/Avalonia.Markup.Xaml.Loader/CompilerExtensions/Transformers/AvaloniaXamlIlWellKnownTypes.cs

@@ -1,4 +1,5 @@
 using System.Collections.Generic;
+using System.Linq;
 using XamlX.Emit;
 using XamlX.IL;
 using XamlX.Transform;
@@ -52,7 +53,18 @@ namespace Avalonia.Markup.Xaml.XamlIl.CompilerExtensions.Transformers
         public IXamlType Uri { get; }
         public IXamlType FontFamily { get; }
         public IXamlConstructor FontFamilyConstructorUriName { get; }
-        
+        public IXamlType Thickness { get; }
+        public IXamlConstructor ThicknessFullConstructor { get; }
+        public IXamlType Point { get; }
+        public IXamlConstructor PointFullConstructor { get; }
+        public IXamlType Vector { get; }
+        public IXamlConstructor VectorFullConstructor { get; }
+        public IXamlType Size { get; }
+        public IXamlConstructor SizeFullConstructor { get; }
+        public IXamlType Matrix { get; }
+        public IXamlConstructor MatrixFullConstructor { get; }
+        public IXamlType CornerRadius { get; }
+        public IXamlConstructor CornerRadiusFullConstructor { get; }
 
         public AvaloniaXamlIlWellKnownTypes(TransformerConfiguration cfg)
         {
@@ -113,7 +125,22 @@ namespace Avalonia.Markup.Xaml.XamlIl.CompilerExtensions.Transformers
             Long = cfg.TypeSystem.GetType("System.Int64");
             Uri = cfg.TypeSystem.GetType("System.Uri");
             FontFamily = cfg.TypeSystem.GetType("Avalonia.Media.FontFamily");
-            FontFamilyConstructorUriName = FontFamily.FindConstructor(new List<IXamlType> { Uri, XamlIlTypes.String });
+            FontFamilyConstructorUriName = FontFamily.GetConstructor(new List<IXamlType> { Uri, XamlIlTypes.String });
+
+            (IXamlType, IXamlConstructor) GetNumericTypeInfo(string name, IXamlType componentType, int componentCount)
+            {
+                var type = cfg.TypeSystem.GetType(name);
+                var ctor = type.GetConstructor(Enumerable.Range(0, componentCount).Select(_ => componentType).ToList());
+
+                return (type, ctor);
+            }
+
+            (Thickness, ThicknessFullConstructor) = GetNumericTypeInfo("Avalonia.Thickness", XamlIlTypes.Double, 4);
+            (Point, PointFullConstructor) = GetNumericTypeInfo("Avalonia.Point", XamlIlTypes.Double, 2);
+            (Vector, VectorFullConstructor) = GetNumericTypeInfo("Avalonia.Vector", XamlIlTypes.Double, 2);
+            (Size, SizeFullConstructor) = GetNumericTypeInfo("Avalonia.Size", XamlIlTypes.Double, 2);
+            (Matrix, MatrixFullConstructor) = GetNumericTypeInfo("Avalonia.Matrix", XamlIlTypes.Double, 6);
+            (CornerRadius, CornerRadiusFullConstructor) = GetNumericTypeInfo("Avalonia.CornerRadius", XamlIlTypes.Double, 4);
         }
     }
 

src/Markup/Avalonia.Markup.Xaml.Loader/xamlil.github

@@ -1 +1 @@
-Subproject commit 5420df861ce6f2be5ead9efa078fe7242ce88f18
+Subproject commit ea80a607c5e9d8f000160dbbb48c27ed4cfafbc9

src/Skia/Avalonia.Skia/DrawingContextImpl.cs

@@ -434,7 +434,7 @@ namespace Avalonia.Skia
         /// <inheritdoc />
         public IDrawingContextLayerImpl CreateLayer(Size size)
         {
-            return CreateRenderTarget( size);
+            return CreateRenderTarget(size, true);
         }
 
         /// <inheritdoc />
@@ -673,7 +673,7 @@ namespace Avalonia.Skia
         private void ConfigureTileBrush(ref PaintWrapper paintWrapper, Size targetSize, ITileBrush tileBrush, IDrawableBitmapImpl tileBrushImage)
         {
             var calc = new TileBrushCalculator(tileBrush, tileBrushImage.PixelSize.ToSizeWithDpi(_dpi), targetSize);
-            var intermediate = CreateRenderTarget(calc.IntermediateSize);
+            var intermediate = CreateRenderTarget(calc.IntermediateSize, false);
 
             paintWrapper.AddDisposable(intermediate);
 
@@ -748,7 +748,7 @@ namespace Avalonia.Skia
 
             if (intermediateSize.Width >= 1 && intermediateSize.Height >= 1)
             {
-                var intermediate = CreateRenderTarget(intermediateSize);
+                var intermediate = CreateRenderTarget(intermediateSize, false);
 
                 using (var ctx = intermediate.CreateDrawingContext(visualBrushRenderer))
                 {
@@ -978,9 +978,10 @@ namespace Avalonia.Skia
         /// Create new render target compatible with this drawing context.
         /// </summary>
         /// <param name="size">The size of the render target in DIPs.</param>
+        /// <param name="isLayer">Whether the render target is being created for a layer.</param>
         /// <param name="format">Pixel format.</param>
         /// <returns></returns>
-        private SurfaceRenderTarget CreateRenderTarget(Size size, PixelFormat? format = null)
+        private SurfaceRenderTarget CreateRenderTarget(Size size, bool isLayer, PixelFormat? format = null)
         {
             var pixelSize = PixelSize.FromSizeWithDpi(size, _dpi);
             var createInfo = new SurfaceRenderTarget.CreateInfo
@@ -992,7 +993,8 @@ namespace Avalonia.Skia
                 DisableTextLcdRendering = !_canTextUseLcdRendering,
                 GrContext = _grContext,
                 Gpu = _gpu,
-                Session = _session
+                Session = _session,
+                DisableManualFbo = !isLayer,
             };
 
             return new SurfaceRenderTarget(createInfo);

src/Skia/Avalonia.Skia/PlatformRenderInterface.cs

@@ -124,7 +124,8 @@ namespace Avalonia.Skia
                 Width = size.Width,
                 Height = size.Height,
                 Dpi = dpi,
-                DisableTextLcdRendering = false
+                DisableTextLcdRendering = false,
+                DisableManualFbo = true,
             };
 
             return new SurfaceRenderTarget(createInfo);

src/Skia/Avalonia.Skia/SurfaceRenderTarget.cs

@@ -51,7 +51,8 @@ namespace Avalonia.Skia
             _grContext = createInfo.GrContext;
             _gpu = createInfo.Gpu;
 
-            _surface = _gpu?.TryCreateSurface(PixelSize, createInfo.Session);
+            if (!createInfo.DisableManualFbo)
+                _surface = _gpu?.TryCreateSurface(PixelSize, createInfo.Session);
             if (_surface == null)
                 _surface = new SkiaSurfaceWrapper(CreateSurface(createInfo.GrContext, PixelSize.Width, PixelSize.Height,
                     createInfo.Format));
@@ -220,6 +221,8 @@ namespace Avalonia.Skia
             public ISkiaGpu Gpu;
 
             public ISkiaGpuRenderSession Session;
+
+            public bool DisableManualFbo;
         }
     }
 }

tests/Avalonia.Controls.UnitTests/ComboBoxTests.cs

@@ -40,6 +40,7 @@ namespace Avalonia.Controls.UnitTests
                 Items = items,
                 SelectedIndex = 0,
             };
+            var root = new TestRoot(target);
 
             var rectangle = target.GetValue(ComboBox.SelectionBoxItemProperty) as Rectangle;
             Assert.NotNull(rectangle);

tests/Avalonia.Markup.Xaml.UnitTests/MarkupExtensions/CompiledBindingExtensionTests.cs

@@ -374,7 +374,7 @@ namespace Avalonia.Markup.Xaml.UnitTests.MarkupExtensions
     </Window.DataTemplates>
     <ContentControl Name='target' Content='{CompiledBinding}' />
 </Window>";
-                Assert.Throws<XamlTransformException>(() => AvaloniaRuntimeXamlLoader.Load(xaml));
+                ThrowsXamlTransformException(() => AvaloniaRuntimeXamlLoader.Load(xaml));
             }
         }
 
@@ -392,7 +392,7 @@ namespace Avalonia.Markup.Xaml.UnitTests.MarkupExtensions
         <TextBlock Text='{CompiledBinding StringProperty}' Name='textBlock' />
     </ContentControl>
 </Window>";
-                Assert.Throws<XamlTransformException>(() => AvaloniaRuntimeXamlLoader.Load(xaml));
+                ThrowsXamlTransformException(() => AvaloniaRuntimeXamlLoader.Load(xaml));
             }
         }
 
@@ -449,7 +449,7 @@ namespace Avalonia.Markup.Xaml.UnitTests.MarkupExtensions
         </ItemsControl.DataTemplates>
     </ItemsControl>
 </Window>";
-                Assert.Throws<XamlTransformException>(() => AvaloniaRuntimeXamlLoader.Load(xaml));
+                ThrowsXamlTransformException(() => AvaloniaRuntimeXamlLoader.Load(xaml));
             }
         }
 
@@ -599,7 +599,7 @@ namespace Avalonia.Markup.Xaml.UnitTests.MarkupExtensions
         x:CompileBindings='true'>
     <TextBlock Text='{Binding InvalidPath}' Name='textBlock' />
 </Window>";
-                Assert.Throws<XamlX.XamlParseException>(() => AvaloniaRuntimeXamlLoader.Load(xaml));
+                ThrowsXamlParseException(() => AvaloniaRuntimeXamlLoader.Load(xaml));
             }
         }
 
@@ -657,7 +657,7 @@ namespace Avalonia.Markup.Xaml.UnitTests.MarkupExtensions
         x:DataType='local:TestDataContext'
         x:CompileBindings='notabool'>
 </Window>";
-                Assert.Throws<XamlX.XamlParseException>(() => AvaloniaRuntimeXamlLoader.Load(xaml));
+                ThrowsXamlParseException(() => AvaloniaRuntimeXamlLoader.Load(xaml));
             }
         }
 
@@ -818,8 +818,25 @@ namespace Avalonia.Markup.Xaml.UnitTests.MarkupExtensions
                 Assert.Equal(null, contentControl.Content);
             }
         }
-    }
 
+        void Throws(string type, Action cb)
+        {
+            try
+            {
+                cb();
+            }
+            catch (Exception e) when (e.GetType().Name == type)
+            {
+                return;
+            }
+
+            throw new Exception("Expected " + type);
+        }
+
+        void ThrowsXamlParseException(Action cb) => Throws("XamlParseException", cb);
+        void ThrowsXamlTransformException(Action cb) => Throws("XamlTransformException", cb);
+    }
+    
     public interface INonIntegerIndexer
     {
         string this[string key] { get; set; }