Consider Clip.Bounds in clipping calculation in ServerCompositionVisual;

In addition, the ServerCompositionVisual now tracks changes to the clip property, allowing for re-calculation when the clip is altered.

src/Avalonia.Base/Rendering/Composition/Server/ServerCompositionVisual.DirtyProperties.cs

@@ -38,6 +38,7 @@ partial class ServerCompositionVisual
         CompositionVisualChangedFields.Size
         | CompositionVisualChangedFields.SizeAnimated
         | CompositionVisualChangedFields.ClipToBounds
+        | CompositionVisualChangedFields.Clip
         | CompositionVisualChangedFields.ClipToBoundsAnimated;
         
     partial void OnFieldsDeserialized(CompositionVisualChangedFields changed)

src/Avalonia.Base/Rendering/Composition/Server/ServerCompositionVisual.cs

@@ -182,11 +182,24 @@ namespace Avalonia.Rendering.Composition.Server
 
             if (_clipSizeDirty || positionChanged)
             {
-                _transformedClipBounds = ClipToBounds
-                    ? new Rect(new Size(Size.X, Size.Y))
-                        .TransformToAABB(GlobalTransformMatrix)
-                    : null;
+                Rect? transformedVisualBounds = null;
+                Rect? transformedClipBounds = null;
                 
+                if (ClipToBounds)
+                    transformedVisualBounds = new Rect(new Size(Size.X, Size.Y)).TransformToAABB(GlobalTransformMatrix);
+                
+                 if (Clip != null)
+                     transformedClipBounds = Clip.Bounds.TransformToAABB(GlobalTransformMatrix);
+
+                 if (transformedVisualBounds != null && transformedClipBounds != null)
+                     _transformedClipBounds = transformedVisualBounds.Value.Intersect(transformedClipBounds.Value);
+                 else if (transformedVisualBounds != null)
+                     _transformedClipBounds = transformedVisualBounds;
+                 else if (transformedClipBounds != null)
+                     _transformedClipBounds = transformedClipBounds;
+                 else
+                     _transformedClipBounds = null;
+                 
                 _clipSizeDirty = false;
             }