Merge pull request #11642 from AvaloniaUI/fixes/server-visual-invalidate

Actually invalidate the server visual on render list invalidation

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

@@ -14,7 +14,7 @@ namespace Avalonia.Rendering.Composition.Server;
 /// <summary>
 /// Server-side counterpart of <see cref="CompositionDrawListVisual"/>
 /// </summary>
-internal class ServerCompositionDrawListVisual : ServerCompositionContainerVisual
+internal class ServerCompositionDrawListVisual : ServerCompositionContainerVisual, IServerRenderResourceObserver
 {
 #if DEBUG
     // This is needed for debugging purposes so we could see inspect the associated visual from debugger
@@ -37,6 +37,7 @@ internal class ServerCompositionDrawListVisual : ServerCompositionContainerVisua
         {
             _renderCommands?.Dispose();
             _renderCommands = reader.ReadObject<ServerCompositionRenderData?>();
+            _renderCommands?.AddObserver(this);
         }
         base.DeserializeChangesCore(reader, committedAt);
     }
@@ -50,6 +51,8 @@ internal class ServerCompositionDrawListVisual : ServerCompositionContainerVisua
         base.RenderCore(canvas, currentTransformedClip);
     }
     
+    public void DependencyQueuedInvalidate(IServerRenderResource sender) => ValuesInvalidated();
+    
 #if DEBUG
     public override string ToString()
     {

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

@@ -13,8 +13,8 @@ internal interface IServerRenderResourceObserver
 
 internal interface IServerRenderResource : IServerRenderResourceObserver
 {
-    void AddObserver(IServerRenderResource observer);
-    void RemoveObserver(IServerRenderResource observer);
+    void AddObserver(IServerRenderResourceObserver observer);
+    void RemoveObserver(IServerRenderResourceObserver observer);
     void QueuedInvalidate();
 }
 
@@ -23,7 +23,7 @@ internal class SimpleServerRenderResource : SimpleServerObject, IServerRenderRes
     private bool _pendingInvalidation;
     private bool _disposed;
     public bool IsDisposed => _disposed;
-    private RefCountingSmallDictionary<IServerRenderResource> _observers;
+    private RefCountingSmallDictionary<IServerRenderResourceObserver> _observers;
     
     public SimpleServerRenderResource(ServerCompositor compositor) : base(compositor)
     {
@@ -97,7 +97,7 @@ internal class SimpleServerRenderResource : SimpleServerObject, IServerRenderRes
         
     }
     
-    public void AddObserver(IServerRenderResource observer)
+    public void AddObserver(IServerRenderResourceObserver observer)
     {
         Debug.Assert(!_disposed);
         if(_disposed)
@@ -105,7 +105,7 @@ internal class SimpleServerRenderResource : SimpleServerObject, IServerRenderRes
         _observers.Add(observer);
     }
 
-    public void RemoveObserver(IServerRenderResource observer)
+    public void RemoveObserver(IServerRenderResourceObserver observer)
     {
         if (_disposed)
             return;