Fixes/drawing brush transform (AvaloniaUI#14978)

* Apply brush transform to SKPicture instead to the local matrix of the resulting SKShader

* Add unit test
Implement Direct2D1

src/Skia/Avalonia.Skia/DrawingContextImpl.cs

@@ -1150,6 +1150,11 @@ private void ConfigureSceneBrushContentWithPicture(ref PaintWrapper paintWrapper
             var tileBrush = content.Brush;
             var transform = rect.TopLeft == default ? Matrix.Identity : Matrix.CreateTranslation(-rect.X, -rect.Y);
 
+            if (content.Transform is not null)
+            {
+                transform = content.Transform.Value * transform;
+            }
+
             var calc = new TileBrushCalculator(tileBrush, contentSize, targetRect.Size);
             transform *= calc.IntermediateTransform;
 
@@ -1186,15 +1191,6 @@ private void ConfigureSceneBrushContentWithPicture(ref PaintWrapper paintWrapper
             paintTransform = SKMatrix.Concat(paintTransform,
                 SKMatrix.CreateScale((float)(96.0 / _intermediateSurfaceDpi.X), (float)(96.0 / _intermediateSurfaceDpi.Y)));
 
-            if (tileBrush.Transform is { })
-            {
-                var origin = tileBrush.TransformOrigin.ToPixels(targetRect);
-                var offset = Matrix.CreateTranslation(origin);
-                var brushTransform = (-offset) * tileBrush.Transform.Value * (offset);
-
-                paintTransform = paintTransform.PreConcat(brushTransform.ToSKMatrix());
-            }
-
             if (tileBrush.DestinationRect.Unit == RelativeUnit.Relative)
                 paintTransform =
                     paintTransform.PreConcat(SKMatrix.CreateTranslation((float)targetRect.X, (float)targetRect.Y));

src/Windows/Avalonia.Direct2D1/Media/DrawingContextImpl.cs

@@ -622,6 +622,12 @@ public BrushImpl CreateBrush(IBrush brush, Rect destinationRect)
                             using (var ctx = new RenderTarget(intermediate).CreateDrawingContext(true))
                             {
                                 intermediate.Clear(null);
+
+                                if (sceneBrush?.Transform is not null)
+                                {
+                                    ctx.Transform *= sceneBrush.Transform.Value;
+                                }
+
                                 sceneBrushContent.Render(ctx,
                                     rect.TopLeft == default ? null : Matrix.CreateTranslation(-rect.X, -rect.Y));
                             }

tests/Avalonia.RenderTests/Media/ImageBrushTests.cs

@@ -460,5 +460,35 @@ public async Task ImageBrush_Is_Properly_Mapped(bool relative)
             await RenderToFile(new RelativePointTestPrimitivesHelper(brush), testName);
             CompareImages(testName);
         }
+
+        [Fact]
+        public async Task ImageBrush_Should_Render_With_Transform()
+        {
+            var image = new Image
+            {
+                Width = 200,
+                Height = 200,
+                Source = new DrawingImage
+                {
+                    Drawing = new GeometryDrawing
+                    {
+                        Brush = new DrawingBrush
+                        {
+                            Transform = new TranslateTransform { X = 10, Y = 10 },
+                            Drawing = new GeometryDrawing
+                            {
+                                Brush = Brushes.MediumBlue,
+                                Geometry = new RectangleGeometry { Rect = new Rect(0, 0, 48, 48) }
+                            }
+                        },
+                        Geometry = new RectangleGeometry { Rect = new Rect(0, 0, 48, 48) }
+                    }
+                }
+            };
+
+            await RenderToFile(image);
+
+            CompareImages();
+        }
     }
 }