feat: change shape changer to support multiple target renderers (#1011)

* feat: add target renderer to ChangedShape

* chore: add test for ShapeChanger target renderer

* feat: add override target to MaterialSetter

* fix: resolve added AvatarObjectReference

* fix: record prefab instance property modifications

* refactor: remove unused setter for AvatarObjectReference

* refactor: change ChangedShape and MaterialSwitchObject from struct to class

* feat: remove override target from ShapeChanger and MaterialSetter

* refactor: align flow and code style of ShapeChanger and MaterialSetter

* feat: ShapeChanger target migration

* fix: add null check

* chore: added some comments and nullchecks

---------

Co-authored-by: bd_ <bd_@nadena.dev>

Editor/Inspector/MaterialSetter/MaterialSwitchObjectEditor.cs

@@ -28,44 +28,14 @@ namespace nadena.dev.modular_avatar.core.editor.ShapeChanger
             
             var f_material_index = uxml.Q<DropdownField>("f-material-index");
             
-            var f_object = uxml.Q<ObjectField>("f-object");
-            f_object.objectType = typeof(Renderer);
-            f_object.allowSceneObjects = true;
+            var f_object = uxml.Q<PropertyField>("f-object");
             
-            var f_target_object = uxml.Q<ObjectField>("f-obj-target-object");
-            var f_reference_path = uxml.Q<TextField>("f-obj-ref-path");
-            
-            f_object.RegisterValueChangedCallback(evt =>
+            f_object.RegisterValueChangeCallback(evt =>
             {
-                var gameObj = (evt.newValue as Renderer)?.gameObject;
-
-                if (gameObj == null)
-                {
-                    f_target_object.value = null;
-                    f_reference_path.value = "";
-                }
-                else
-                {
-                    var path = RuntimeUtil.AvatarRootPath(gameObj);
-
-                    f_reference_path.value = path;
-                    if (path == "")
-                    {
-                        f_target_object.value = null;
-                    }
-                    else
-                    {
-                        f_target_object.value = gameObj;
-                    }
-                }
-
                 EditorApplication.delayCall += UpdateMaterialDropdown;
             });
             UpdateMaterialDropdown();
 
-            f_target_object.RegisterValueChangedCallback(_ => UpdateVisualTarget());
-            f_reference_path.RegisterValueChangedCallback(_ => UpdateVisualTarget());
-            
             // Link dropdown to material index field
             var f_material_index_int = uxml.Q<IntegerField>("f-material-index-int");
             f_material_index_int.RegisterValueChangedCallback(evt =>
@@ -83,30 +53,13 @@ namespace nadena.dev.modular_avatar.core.editor.ShapeChanger
 
             return uxml;
 
-            void UpdateVisualTarget()
-            {
-                var targetObject = AvatarObjectReference.Get(property.FindPropertyRelative("Object"));
-                Renderer targetRenderer;
-
-                try
-                {
-                    targetRenderer = targetObject?.GetComponent<Renderer>();
-                }
-                catch (MissingComponentException e)
-                {
-                    targetRenderer = null;
-                }
-                
-                f_object.SetValueWithoutNotify(targetRenderer);
-            }
-            
             void UpdateMaterialDropdown()
             {
-                var toggledObject = AvatarObjectReference.Get(property.FindPropertyRelative("Object"));
+                var targetObject = AvatarObjectReference.Get(property.FindPropertyRelative("Object"));
                 Material[] sharedMaterials;
                 try
                 {
-                    sharedMaterials = toggledObject?.GetComponent<Renderer>()?.sharedMaterials;
+                    sharedMaterials = targetObject?.GetComponent<Renderer>()?.sharedMaterials;
                 }
                 catch (MissingComponentException e)
                 {

Editor/Inspector/MaterialSetter/MaterialSwitchObjectEditor.uxml

@@ -1,13 +1,9 @@
 <UXML xmlns:ui="UnityEngine.UIElements" xmlns:ed="UnityEditor.UIElements">
     <ui:VisualElement class="toggled-object-editor">
         <ui:VisualElement class="horizontal">
-            <!--<ed:PropertyField binding-path="Object" label="" name="f-object" class="f-object"/>-->
-            <ed:ObjectField label="" name="f-object" class="f-object"/>
+            <ed:PropertyField binding-path="Object" label="" name="f-object" class="f-object"/>
             <ui:DropdownField name="f-material-index" binding-path="MaterialIndex"/>
-            
             <ui:VisualElement style="display:none">
-                <ui:TextField binding-path="Object.referencePath" label="" name="f-obj-ref-path"/>
-                <ed:ObjectField name="f-obj-target-object" binding-path="Object.targetObject"/>
                 <ed:IntegerField binding-path="MaterialIndex" name="f-material-index-int"/>
             </ui:VisualElement>
         </ui:VisualElement>

Editor/Inspector/ShapeChanger/AddShapePopup.cs

@@ -1,99 +0,0 @@
-#region
-
-using System.Collections.Generic;
-using System.Linq;
-using UnityEditor;
-using UnityEngine;
-using UnityEngine.UIElements;
-
-#endregion
-
-namespace nadena.dev.modular_avatar.core.editor.ShapeChanger
-{
-    public class AddShapePopup : PopupWindowContent
-    {
-        private const string Root = "Packages/nadena.dev.modular-avatar/Editor/Inspector/ShapeChanger/";
-        const string UxmlPath = Root + "AddShapePopup.uxml";
-        const string UssPath = Root + "ShapeChangerStyles.uss";
-
-        private VisualElement _elem;
-        private ScrollView _scrollView;
-
-        public AddShapePopup(ModularAvatarShapeChanger changer)
-        {
-            if (changer == null) return;
-            var target = changer.targetRenderer.Get(changer)?.GetComponent<SkinnedMeshRenderer>();
-            if (target == null || target.sharedMesh == null) return;
-
-            var alreadyRegistered = changer.Shapes.Select(c => c.ShapeName).ToHashSet();
-
-            var keys = new List<string>();
-            for (int i = 0; i < target.sharedMesh.blendShapeCount; i++)
-            {
-                var name = target.sharedMesh.GetBlendShapeName(i);
-                if (alreadyRegistered.Contains(name)) continue;
-
-                keys.Add(name);
-            }
-
-            var uss = AssetDatabase.LoadAssetAtPath<StyleSheet>(UssPath);
-            var uxml = AssetDatabase.LoadAssetAtPath<VisualTreeAsset>(UxmlPath);
-
-            _elem = uxml.CloneTree();
-            _elem.styleSheets.Add(uss);
-            Localization.UI.Localize(_elem);
-
-            _scrollView = _elem.Q<ScrollView>("scroll-view");
-
-            if (keys.Count > 0)
-            {
-                _scrollView.contentContainer.Clear();
-
-                foreach (var key in keys)
-                {
-                    var container = new VisualElement();
-                    container.AddToClassList("add-shape-row");
-
-                    Button btn = default;
-                    btn = new Button(() =>
-                    {
-                        AddShape(changer, key);
-                        container.RemoveFromHierarchy();
-                    });
-                    btn.text = "+";
-                    container.Add(btn);
-
-                    var label = new Label(key);
-                    container.Add(label);
-
-                    _scrollView.contentContainer.Add(container);
-                }
-            }
-        }
-
-        private void AddShape(ModularAvatarShapeChanger changer, string key)
-        {
-            Undo.RecordObject(changer, "Add Shape");
-
-            changer.Shapes.Add(new ChangedShape()
-            {
-                ShapeName = key,
-                ChangeType = ShapeChangeType.Delete,
-                Value = 100
-            });
-        }
-
-        public override void OnGUI(Rect rect)
-        {
-        }
-
-        public override void OnOpen()
-        {
-            editorWindow.rootVisualElement.Clear();
-            editorWindow.rootVisualElement.Add(_elem);
-            //editorWindow.rootVisualElement.Clear();
-
-            //editorWindow.rootVisualElement.Add(new Label("Hello, World!"));
-        }
-    }
-}

Editor/Inspector/ShapeChanger/AddShapePopup.cs.meta

@@ -1,3 +0,0 @@
-fileFormatVersion: 2
-guid: 1a8351fafb3740918363f60365adfeda
-timeCreated: 1717205112

Editor/Inspector/ShapeChanger/AddShapePopup.uxml

@@ -1,11 +0,0 @@
-<UXML xmlns:ui="UnityEngine.UIElements">
-    <ui:VisualElement class="add-shape-popup">
-        <ui:VisualElement class="add-shape-popup">
-            <ui:Label text="Select Blendshape"/>
-            <ui:VisualElement class="vline"/>
-            <ui:ScrollView show-horizontal-scroller="false" name="scroll-view">
-                <ui:Label text="&lt;none remaining>" class="placeholder"/>
-            </ui:ScrollView>
-        </ui:VisualElement>
-    </ui:VisualElement>
-</UXML>

Editor/Inspector/ShapeChanger/AddShapePopup.uxml.meta

@@ -1,3 +0,0 @@
-fileFormatVersion: 2
-guid: 6753a7b3eae1416cb04786cf53778c33
-timeCreated: 1717205258

Editor/Inspector/ShapeChanger/ChangedShapeEditor.cs

@@ -1,7 +1,10 @@
 #region
 
+using System.Collections.Generic;
+using System.Linq;
 using UnityEditor;
 using UnityEditor.UIElements;
+using UnityEngine;
 using UnityEngine.UIElements;
 
 #endregion
@@ -24,6 +27,16 @@ namespace nadena.dev.modular_avatar.core.editor.ShapeChanger
             uxml.styleSheets.Add(uss);
             uxml.BindProperty(property);
 
+            var f_shape_name = uxml.Q<DropdownField>("f-shape-name");
+
+            var f_object = uxml.Q<PropertyField>("f-object");
+
+            f_object.RegisterValueChangeCallback(evt =>
+            {
+                EditorApplication.delayCall += UpdateShapeDropdown;
+            });
+            UpdateShapeDropdown();
+
             uxml.Q<PropertyField>("f-change-type").RegisterCallback<ChangeEvent<string>>(
                 e =>
                 {
@@ -39,6 +52,29 @@ namespace nadena.dev.modular_avatar.core.editor.ShapeChanger
             );
 
             return uxml;
+
+            void UpdateShapeDropdown()
+            {
+                var targetObject = AvatarObjectReference.Get(property.FindPropertyRelative("Object"));
+                List<string> shapeNames;
+                try
+                {
+                    var mesh = targetObject?.GetComponent<SkinnedMeshRenderer>()?.sharedMesh;
+                    shapeNames = mesh == null ? null : Enumerable.Range(0, mesh.blendShapeCount)
+                        .Select(x => mesh.GetBlendShapeName(x))
+                        .ToList();
+                }
+                catch (MissingComponentException e)
+                {
+                    shapeNames = null;
+                }
+
+                f_shape_name.SetEnabled(shapeNames != null);
+                f_shape_name.choices = shapeNames ?? new();
+
+                f_shape_name.formatListItemCallback = name => shapeNames != null ? name : "<Missing SkinnedMeshRenderer>";
+                f_shape_name.formatSelectedValueCallback = f_shape_name.formatListItemCallback;
+            }
         }
     }
 }

Editor/Inspector/ShapeChanger/ChangedShapeEditor.uxml

@@ -1,8 +1,13 @@
 <UXML xmlns:ui="UnityEngine.UIElements" xmlns:ed="UnityEditor.UIElements">
     <ui:VisualElement class="changed-shape-editor">
-        <ui:Label text="&lt;shape name>" binding-path="ShapeName" name="f-name"/>
-        <ed:PropertyField binding-path="ChangeType" label="" name="f-change-type"/>
-        <ed:PropertyField binding-path="Value" label="" name="f-value" class="f-value"/>
-        <ui:VisualElement name="f-value-delete" class="f-value"/>
+        <ui:VisualElement class="horizontal">
+            <ed:PropertyField binding-path="Object" label="" name="f-object" class="f-object"/>
+            <ed:PropertyField binding-path="ChangeType" label="" name="f-change-type"/>
+        </ui:VisualElement>
+        <ui:VisualElement class="horizontal">
+            <ui:DropdownField name="f-shape-name" binding-path="ShapeName"/>
+            <ed:PropertyField binding-path="Value" label="" name="f-value" class="f-value"/>
+            <ui:VisualElement name="f-value-delete" class="f-value"/>
+        </ui:VisualElement>
     </ui:VisualElement>
 </UXML>

Editor/Inspector/ShapeChanger/ShapeChanger.uxml

@@ -2,7 +2,6 @@
       xmlns:ma="nadena.dev.modular_avatar.core.editor">
     <ui:VisualElement name="root-box">
         <ui:VisualElement name="group-box">
-            <ed:PropertyField binding-path="m_targetRenderer" label="reactive_object.shape-changer.target-renderer" class="ndmf-tr"/>
             <ed:PropertyField binding-path="m_inverted" label="reactive_object.inverse" class="ndmf-tr"/>
 
             <ui:VisualElement name="ListViewContainer">

Editor/Inspector/ShapeChanger/ShapeChangerEditor.cs

@@ -1,6 +1,7 @@
 #region
 
 using System;
+using System.Linq;
 using UnityEditor;
 using UnityEditor.UIElements;
 using UnityEngine;
@@ -18,6 +19,7 @@ namespace nadena.dev.modular_avatar.core.editor.ShapeChanger
         [SerializeField] private StyleSheet uss;
         [SerializeField] private VisualTreeAsset uxml;
 
+        private BlendshapeSelectWindow _window;
 
         protected override void OnInnerInspectorGUI()
         {
@@ -41,12 +43,50 @@ namespace nadena.dev.modular_avatar.core.editor.ShapeChanger
             var field_addButton = typeof(BaseListView).GetField("m_AddButton", NonPublic | Instance);
             var addButton = (Button)field_addButton.GetValue(listView);
 
-            addButton.clickable = new Clickable(() =>
-            {
-                PopupWindow.Show(addButton.worldBound, new AddShapePopup(target as ModularAvatarShapeChanger));
-            });
+            addButton.clickable = new Clickable(OpenAddWindow);
 
             return root;
         }
+
+        private void OnDisable()
+        {
+            if (_window != null) DestroyImmediate(_window);
+        }
+
+        protected override void OnDestroy()
+        {
+            base.OnDestroy();
+            if (_window != null) DestroyImmediate(_window);
+        }
+
+        private void OpenAddWindow()
+        {
+            if (_window != null) DestroyImmediate(_window);
+            _window = CreateInstance<BlendshapeSelectWindow>();
+            _window.AvatarRoot = RuntimeUtil.FindAvatarTransformInParents((target as ModularAvatarShapeChanger).transform).gameObject;
+            _window.OfferBinding += OfferBinding;
+            _window.Show();
+        }
+
+        private void OfferBinding(BlendshapeBinding binding)
+        {
+            var changer = target as ModularAvatarShapeChanger;
+            if (changer.Shapes.Any(x => x.Object.Equals(binding.ReferenceMesh) && x.ShapeName == binding.Blendshape))
+            {
+                return;
+            }
+
+            Undo.RecordObject(changer, "Add Shape");
+
+            changer.Shapes.Add(new ChangedShape()
+            {
+                Object = binding.ReferenceMesh,
+                ShapeName = binding.Blendshape,
+                ChangeType = ShapeChangeType.Delete,
+                Value = 100
+            });
+
+            PrefabUtility.RecordPrefabInstancePropertyModifications(changer);
+        }
     }
 }

Editor/Inspector/ShapeChanger/ShapeChangerStyles.uss

@@ -39,11 +39,15 @@
     flex-direction: row;
 }
 
-.changed-shape-editor {
+.changed-shape-editor .horizontal {
     flex-direction: row;
 }
 
-.changed-shape-editor #f-name {
+.changed-shape-editor #f-object {
+    flex-grow: 1;
+}
+
+.changed-shape-editor #f-shape-name {
     flex-grow: 1;
 }
 
@@ -64,7 +68,7 @@
 }
 
 .f-value {
-    width: 40px;
+    width: 75px;
 }
 
 #f-value-delete {
@@ -77,6 +81,7 @@
 
 .change-type-delete #f-value-delete {
     display: flex;
+    height: 20px;
 }
 
 /* Add shape window */

Editor/Localization/en-US.json

@@ -251,6 +251,5 @@
   "ma_info.param_usage_ui.no_data": "[ NO DATA ]",
   "reactive_object.inverse": "Inverse Condition",
   "reactive_object.material-setter.set-to": "Set material to: ",
-  "reactive_object.shape-changer.target-renderer": "Target Renderer",
   "menuitem.misc.add_toggle": "Add toggle"
 }

Editor/Localization/ja-JP.json

@@ -247,6 +247,5 @@
   "ma_info.param_usage_ui.no_data": "[ NO DATA ]",
   "reactive_object.inverse": "条件を反転",
   "reactive_object.material-setter.set-to": "変更先のマテリアル ",
-  "reactive_object.shape-changer.target-renderer": "操作するレンダラー",
   "menuitem.misc.add_toggle": "トグルを追加"
 }

Editor/Localization/zh-Hant.json

@@ -250,6 +250,5 @@
   "ma_info.param_usage_ui.no_data": "【無資訊】",
   "reactive_object.inverse": "反轉條件",
   "reactive_object.material-setter.set-to": "將材質設定為：",
-  "reactive_object.shape-changer.target-renderer": "目標 Renderer",
   "menuitem.misc.add_toggle": "新增開關"
 }

Editor/ReactiveObjects/AnimationGeneration/ReactiveObjectAnalyzer.LocateReactions.cs

@@ -15,15 +15,16 @@ namespace nadena.dev.modular_avatar.core.editor
 
             foreach (var changer in changers)
             {
-                var renderer = changer.targetRenderer.Get(changer)?.GetComponent<SkinnedMeshRenderer>();
-                if (renderer == null) continue;
-
-                var mesh = renderer.sharedMesh;
-
-                if (mesh == null) continue;
+                if (changer.Shapes == null) continue;
 
                 foreach (var shape in changer.Shapes)
                 {
+                    var renderer = shape.Object.Get(changer)?.GetComponent<SkinnedMeshRenderer>();
+                    if (renderer == null) continue;
+
+                    var mesh = renderer.sharedMesh;
+                    if (mesh == null) continue;
+
                     var shapeId = mesh.GetBlendShapeIndex(shape.ShapeName);
                     if (shapeId < 0) continue;
 
@@ -92,9 +93,7 @@ namespace nadena.dev.modular_avatar.core.editor
 
                 foreach (var obj in setter.Objects)
                 {
-                    var target = obj.Object.Get(setter);
-                    if (target == null) continue;
-                    var renderer = target.GetComponent<Renderer>();
+                    var renderer = obj.Object.Get(setter)?.GetComponent<Renderer>();
                     if (renderer == null || renderer.sharedMaterials.Length < obj.MaterialIndex) continue;
 
                     var key = new TargetProp

Editor/ReactiveObjects/MaterialSetterPreview.cs

@@ -31,40 +31,41 @@ namespace nadena.dev.modular_avatar.core.editor
             var menuItemPreview = new MenuItemPreviewCondition(context);
             var setters = context.GetComponentsByType<ModularAvatarMaterialSetter>();
 
-            var groups = new Dictionary<Renderer, ImmutableList<ModularAvatarMaterialSetter>>();
+            var builders =
+                new Dictionary<Renderer, ImmutableList<ModularAvatarMaterialSetter>.Builder>(
+                    new ObjectIdentityComparer<Renderer>());
             
             foreach (var setter in setters)
             {
+                if (setter == null) continue;
+
                 var mami = context.GetComponent<ModularAvatarMenuItem>(setter.gameObject);
                 bool active = context.ActiveAndEnabled(setter) && (mami == null || menuItemPreview.IsEnabledForPreview(mami));
-                if (active == context.Observe(setter, t => t.Inverted)) continue;
+                if (active == context.Observe(setter, s => s.Inverted)) continue;
                 
-                var objs = context.Observe(setter, s => s.Objects.Select(o => (o.Object.Get(s), o.Material, o.MaterialIndex)).ToList(), (x, y) => x.SequenceEqual(y));
+                var objects = context.Observe(setter, s => s.Objects.Select(o => (o.Object.Get(s), o.Material, o.MaterialIndex)).ToList(), Enumerable.SequenceEqual);
                 
-                if (setter.Objects == null) continue;
-                
-                foreach (var (obj, mat, index) in objs)
+                foreach (var (target, mat, index) in objects)
                 {
-                    if (obj == null) continue;
-                    var renderer = context.GetComponent<Renderer>(obj);
+                    var renderer = context.GetComponent<Renderer>(target);
                     if (renderer == null) continue;
                     
                     var matCount = context.Observe(renderer, r => r.sharedMaterials.Length);
                     
                     if (matCount <= index) continue;
                     
-                    if (!groups.TryGetValue(renderer, out var list))
+                    if (!builders.TryGetValue(renderer, out var builder))
                     {
-                        list = ImmutableList.Create<ModularAvatarMaterialSetter>();
-                        groups.Add(renderer, list);
+                        builder = ImmutableList.CreateBuilder<ModularAvatarMaterialSetter>();
+                        builders[renderer] = builder;
                     }
                     
-                    groups[renderer] = list.Add(setter);
+                    builder.Add(setter);
                 }
             }
 
-            var finalGroups = groups.Select(g => RenderGroup.For(g.Key).WithData(g.Value)).ToImmutableList();
-            return finalGroups;
+            return builders.Select(g => RenderGroup.For(g.Key).WithData(g.Value.ToImmutable()))
+                .ToImmutableList();
         }
 
         public Task<IRenderFilterNode> Instantiate(RenderGroup group, IEnumerable<(Renderer, Renderer)> proxyPairs, ComputeContext context)
@@ -80,48 +81,33 @@ namespace nadena.dev.modular_avatar.core.editor
             private readonly ImmutableList<ModularAvatarMaterialSetter> _setters;
             private ImmutableList<(int, Material)> _materials;
             
-            public RenderAspects WhatChanged {get; private set; }
-
-            public void OnFrame(Renderer original, Renderer proxy)
-            {
-                var mats = proxy.sharedMaterials;
-
-                foreach (var mat in _materials)
-                {
-                    if (mat.Item1 <= mats.Length)
-                    {
-                        mats[mat.Item1] = mat.Item2;
-                    }
-                }
-                
-                proxy.sharedMaterials = mats;
-            }
+            public RenderAspects WhatChanged => RenderAspects.Material;
             
             public Node(ImmutableList<ModularAvatarMaterialSetter> setters)
             {
                 _setters = setters;
                 _materials = ImmutableList<(int, Material)>.Empty;
-                WhatChanged = RenderAspects.Material;
             }
 
             public Task<IRenderFilterNode> Refresh(IEnumerable<(Renderer, Renderer)> proxyPairs, ComputeContext context, RenderAspects updatedAspects)
             {
-                var proxyPair = proxyPairs.First();
-                var original = proxyPair.Item1;
-                var proxy = proxyPair.Item2;
+                var (original, proxy) = proxyPairs.First();
+
+                if (original == null || proxy == null) return null;
 
                 var mats = new Material[proxy.sharedMaterials.Length];
                 
                 foreach (var setter in _setters)
                 {
-                    var objects = context.Observe(setter, s => s.Objects
-                        .Where(obj => obj.Object.Get(s) == original.gameObject)
-                        .Select(obj => (obj.Material, obj.MaterialIndex)),
-                        (x, y) => x.SequenceEqual(y)
-                    );
+                    if (setter == null) continue;
+
+                    var objects = context.Observe(setter, s => s.Objects.Select(o => (o.Object.Get(s), o.Material, o.MaterialIndex)).ToList(), Enumerable.SequenceEqual);
                     
-                    foreach (var (mat, index) in objects)
+                    foreach (var (target, mat, index) in objects)
                     {
+                        var renderer = context.GetComponent<Renderer>(target);
+                        if (renderer != original) continue;
+
                         if (index <= mats.Length)
                         {
                             mats[index] = mat;
@@ -131,14 +117,32 @@ namespace nadena.dev.modular_avatar.core.editor
                 
                 var materials = mats.Select((m, i) => (i, m)).Where(kvp => kvp.m != null).ToImmutableList();
 
-                if (materials.SequenceEqual(_materials))
+                if (!materials.SequenceEqual(_materials))
                 {
-                    return Task.FromResult<IRenderFilterNode>(this);
+                    return Task.FromResult<IRenderFilterNode>(new Node(_setters)
+                    {
+                        _materials = materials,
+                    });
                 }
-                else
+
+                return Task.FromResult<IRenderFilterNode>(this);
+            }
+
+            public void OnFrame(Renderer original, Renderer proxy)
+            {
+                if (original == null || proxy == null) return;
+
+                var mats = proxy.sharedMaterials;
+
+                foreach (var mat in _materials)
                 {
-                    return Task.FromResult<IRenderFilterNode>(new Node(_setters) { _materials = materials });
+                    if (mat.Item1 <= mats.Length)
+                    {
+                        mats[mat.Item1] = mat.Item2;
+                    }
                 }
+
+                proxy.sharedMaterials = mats;
             }
         }
     }

Editor/ReactiveObjects/ShapeChangerPreview.cs

@@ -31,79 +31,107 @@ namespace nadena.dev.modular_avatar.core.editor
             return context.Observe(EnableNode.IsEnabled);
         }
         
-        public ImmutableList<RenderGroup> GetTargetGroups(ComputeContext ctx)
+        public ImmutableList<RenderGroup> GetTargetGroups(ComputeContext context)
         {
-            var menuItemPreview = new MenuItemPreviewCondition(ctx);
-            
-            var allChangers = ctx.GetComponentsByType<ModularAvatarShapeChanger>();
+            var menuItemPreview = new MenuItemPreviewCondition(context);
+            var changers = context.GetComponentsByType<ModularAvatarShapeChanger>();
 
-            var groups =
+            var builders =
                 new Dictionary<Renderer, ImmutableList<ModularAvatarShapeChanger>.Builder>(
                     new ObjectIdentityComparer<Renderer>());
 
-            foreach (var changer in allChangers)
+            foreach (var changer in changers)
             {
                 if (changer == null) continue;
 
-                var mami = ctx.GetComponent<ModularAvatarMenuItem>(changer.gameObject);
-                bool active = ctx.ActiveAndEnabled(changer) && (mami == null || menuItemPreview.IsEnabledForPreview(mami));
-                if (active == ctx.Observe(changer, t => t.Inverted)) continue;
+                var mami = context.GetComponent<ModularAvatarMenuItem>(changer.gameObject);
+                bool active = context.ActiveAndEnabled(changer) && (mami == null || menuItemPreview.IsEnabledForPreview(mami));
+                if (active == context.Observe(changer, c => c.Inverted)) continue;
 
-                var target = ctx.Observe(changer, _ => changer.targetRenderer.Get(changer));
-                var renderer = ctx.GetComponent<SkinnedMeshRenderer>(target);
+                var shapes = context.Observe(changer, c => c.Shapes.Select(s => (s.Object.Get(c), s.ShapeName, s.ChangeType, s.Value)).ToList(), Enumerable.SequenceEqual);
 
-                if (renderer == null) continue;
-
-                if (!groups.TryGetValue(renderer, out var group))
+                foreach (var (target, name, type, value) in shapes)
                 {
-                    group = ImmutableList.CreateBuilder<ModularAvatarShapeChanger>();
-                    groups[renderer] = group;
-                }
+                    var renderer = context.GetComponent<SkinnedMeshRenderer>(target);
+                    if (renderer == null) continue;
 
-                group.Add(changer);
+                    if (!builders.TryGetValue(renderer, out var builder))
+                    {
+                        builder = ImmutableList.CreateBuilder<ModularAvatarShapeChanger>();
+                        builders[renderer] = builder;
+                    }
+
+                    builder.Add(changer);
+                }
             }
             
-            return groups.Select(g => RenderGroup.For(g.Key).WithData(g.Value.ToImmutable()))
+            return builders.Select(g => RenderGroup.For(g.Key).WithData(g.Value.ToImmutable()))
                 .ToImmutableList();
         }
 
-        public async Task<IRenderFilterNode> Instantiate(
-            RenderGroup group,
-            IEnumerable<(Renderer, Renderer)> proxyPairs,
-            ComputeContext context)
+        public Task<IRenderFilterNode> Instantiate(RenderGroup group, IEnumerable<(Renderer, Renderer)> proxyPairs, ComputeContext context)
         {
-            var node = new Node(group);
+            var changers = group.GetData<ImmutableList<ModularAvatarShapeChanger>>();
+            var node = new Node(changers);
 
-            try
-            {
-                await node.Init(proxyPairs, context);
-            }
-            catch (Exception e)
-            {
-                // dispose
-                throw;
-            }
-
-            return node;
+            return node.Refresh(proxyPairs, context, 0);
         }
 
         private class Node : IRenderFilterNode
         {
-            private readonly RenderGroup _group;
             private readonly ImmutableList<ModularAvatarShapeChanger> _changers;
-            
+            private ImmutableHashSet<(int, float)> _shapes;
+            private ImmutableHashSet<int> _toDelete;
             private Mesh _generatedMesh = null;
-            private HashSet<int> _toDelete;
 
-            internal Node(RenderGroup group)
+            public RenderAspects WhatChanged => RenderAspects.Shapes | RenderAspects.Mesh;
+
+            internal Node(ImmutableList<ModularAvatarShapeChanger> changers)
             {
-                _group = group;
-                _changers = _group.GetData<ImmutableList<ModularAvatarShapeChanger>>();
+                _changers = changers;
+                _shapes = ImmutableHashSet<(int, float)>.Empty;
+                _toDelete = ImmutableHashSet<int>.Empty;
+                _generatedMesh = null;
             }
 
-            private HashSet<int> GetToDeleteSet(SkinnedMeshRenderer proxy, ComputeContext context)
+            public Task<IRenderFilterNode> Refresh(IEnumerable<(Renderer, Renderer)> proxyPairs, ComputeContext context, RenderAspects updatedAspects)
             {
-                var toDelete = new HashSet<int>();
+                var (original, proxy) = proxyPairs.First();
+
+                if (original == null || proxy == null) return null;
+                if (original is not SkinnedMeshRenderer originalSmr || proxy is not SkinnedMeshRenderer proxySmr) return null;
+
+                var shapes = GetShapesSet(originalSmr, proxySmr, context);
+                var toDelete = GetToDeleteSet(originalSmr, proxySmr, context);
+
+                if (!toDelete.SequenceEqual(_toDelete))
+                {
+                    return Task.FromResult<IRenderFilterNode>(new Node(_changers)
+                    {
+                        _shapes = shapes,
+                        _toDelete = toDelete,
+                        _generatedMesh = GetGeneratedMesh(proxySmr, toDelete),
+                    });
+                }
+
+                if (!shapes.SequenceEqual(_shapes))
+                {
+                    var reusableMesh = _generatedMesh;
+                    _generatedMesh = null;
+                    return Task.FromResult<IRenderFilterNode>(new Node(_changers)
+                    {
+                        _shapes = shapes,
+                        _toDelete = toDelete,
+                        _generatedMesh = reusableMesh,
+                    });
+                }
+
+                return Task.FromResult<IRenderFilterNode>(this);
+            }
+
+            private ImmutableHashSet<(int, float)> GetShapesSet(SkinnedMeshRenderer original, SkinnedMeshRenderer proxy, ComputeContext context)
+            {
+                var builder = ImmutableHashSet.CreateBuilder<(int, float)>();
                 var mesh = context.Observe(proxy, p => p.sharedMesh, (a, b) =>
                 {
                     if (a != b)
@@ -117,67 +145,60 @@ namespace nadena.dev.modular_avatar.core.editor
 
                 foreach (var changer in _changers)
                 {
-                    var shapes = context.Observe(changer,
-                        c => c.Shapes
-                            .Where(s => s.ChangeType == ShapeChangeType.Delete)
-                            .Select(s => s.ShapeName)
-                            .ToImmutableList(),
-                        Enumerable.SequenceEqual
-                    );
+                    if (changer == null) continue;
 
-                    foreach (var shape in shapes)
+                    var shapes = context.Observe(changer, c => c.Shapes.Select(s => (s.Object.Get(c), s.ShapeName, s.ChangeType, s.Value)).ToList(), Enumerable.SequenceEqual);
+
+                    foreach (var (target, name, type, value) in shapes)
                     {
-                        var index = mesh.GetBlendShapeIndex(shape);
+                        var renderer = context.GetComponent<SkinnedMeshRenderer>(target);
+                        if (renderer != original) continue;
+
+                        var index = mesh.GetBlendShapeIndex(name);
                         if (index < 0) continue;
-                        toDelete.Add(index);
+                        builder.Add((index, type == ShapeChangeType.Delete ? 100 : value));
                     }
                 }
 
-                return toDelete;
+                return builder.ToImmutable();
             }
 
-            public async Task Init(
-                IEnumerable<(Renderer, Renderer)> renderers,
-                ComputeContext context
-            )
+            private ImmutableHashSet<int> GetToDeleteSet(SkinnedMeshRenderer original, SkinnedMeshRenderer proxy, ComputeContext context)
             {
-                var (original, proxy) = renderers.First();
-
-                if (original == null || proxy == null) return;
-                if (!(proxy is SkinnedMeshRenderer smr)) return;
-
-                await Init(smr, context, GetToDeleteSet(smr, context));
-            }
-
-            public async Task<IRenderFilterNode> Refresh(IEnumerable<(Renderer, Renderer)> proxyPairs,
-                ComputeContext context, RenderAspects updatedAspects)
-            {
-                if ((updatedAspects & RenderAspects.Mesh) != 0) return null;
-
-                var (original, proxy) = proxyPairs.First();
-
-                if (original == null || proxy == null) return null;
-                if (!(proxy is SkinnedMeshRenderer smr)) return null;
-
-                var toDelete = GetToDeleteSet(smr, context);
-                if (toDelete.Count == _toDelete.Count && toDelete.All(_toDelete.Contains))
+                var builder = ImmutableHashSet.CreateBuilder<int>();
+                var mesh = context.Observe(proxy, p => p.sharedMesh, (a, b) =>
                 {
-                    //System.Diagnostics.Debug.WriteLine("[ShapeChangerPreview] No changes detected. Retaining node.");
-                    return this;
+                    if (a != b)
+                    {
+                        Debug.Log($"mesh changed {a.GetInstanceID()} -> {b.GetInstanceID()}");
+                        return false;
+                    }
+
+                    return true;
+                });
+
+                foreach (var changer in _changers)
+                {
+                    var shapes = context.Observe(changer, c => c.Shapes.Select(s => (s.Object.Get(c), s.ShapeName, s.ChangeType, s.Value)).ToList(), Enumerable.SequenceEqual);
+
+                    foreach (var (target, name, type, value) in shapes)
+                    {
+                        if (type != ShapeChangeType.Delete) continue;
+
+                        var renderer = context.GetComponent<SkinnedMeshRenderer>(target);
+                        if (renderer != original) continue;
+
+                        var index = mesh.GetBlendShapeIndex(name);
+                        if (index < 0) continue;
+                        builder.Add(index);
+                    }
                 }
 
-                var node = new Node(_group);
-                await node.Init(smr, context, toDelete);
-                return node;
+                return builder.ToImmutable();
             }
 
-            public async Task Init(
-                SkinnedMeshRenderer proxy,
-                ComputeContext context,
-                HashSet<int> toDelete
-            )
+            public Mesh GetGeneratedMesh(SkinnedMeshRenderer proxy, ImmutableHashSet<int> toDelete)
             {
-                _toDelete = toDelete;
                 var mesh = proxy.sharedMesh;
 
                 if (toDelete.Count > 0)
@@ -223,61 +244,33 @@ namespace nadena.dev.modular_avatar.core.editor
 
                         mesh.SetTriangles(tris, subMesh, false, baseVertex: baseVertex);
                     }
-                    
-                    _generatedMesh = mesh;
+
+                    return mesh;
                 }
+
+                return null;
             }
 
+            public void OnFrame(Renderer original, Renderer proxy)
+            {
+                if (original == null || proxy == null) return;
+                if (original is not SkinnedMeshRenderer originalSmr || proxy is not SkinnedMeshRenderer proxySmr) return;
 
-            public RenderAspects Reads => RenderAspects.Shapes | RenderAspects.Mesh;
-            public RenderAspects WhatChanged => RenderAspects.Shapes | RenderAspects.Mesh;
+                if (_generatedMesh != null)
+                {
+                    proxySmr.sharedMesh = _generatedMesh;
+                }
+
+                foreach (var shape in _shapes)
+                {
+                    proxySmr.SetBlendShapeWeight(shape.Item1, shape.Item2);
+                }
+            }
 
             public void Dispose()
             {
                 if (_generatedMesh != null) Object.DestroyImmediate(_generatedMesh);
             }
-
-            public void OnFrame(Renderer original, Renderer proxy)
-            {
-                if (_changers == null) return; // can happen transiently as we disable the last component
-                if (!(proxy is SkinnedMeshRenderer smr)) return;
-
-                Mesh mesh;
-                if (_generatedMesh != null)
-                {
-                    smr.sharedMesh = _generatedMesh;
-                    mesh = _generatedMesh;
-                }
-                else
-                {
-                    mesh = smr.sharedMesh;
-                }
-
-                if (mesh == null) return;
-
-                foreach (var changer in _changers)
-                {
-                    foreach (var shape in changer.Shapes)
-                    {
-                        var index = mesh.GetBlendShapeIndex(shape.ShapeName);
-                        if (index < 0) continue;
-
-                        float setToValue = -1;
-
-                        switch (shape.ChangeType)
-                        {
-                            case ShapeChangeType.Delete:
-                                setToValue = 100;
-                                break;
-                            case ShapeChangeType.Set:
-                                setToValue = shape.Value;
-                                break;
-                        }
-
-                        smr.SetBlendShapeWeight(index, setToValue);
-                    }
-                }
-            }
         }
     }
 }

Runtime/ReactiveObjects/ModularAvatarMaterialSetter.cs

@@ -5,7 +5,7 @@ using UnityEngine;
 namespace nadena.dev.modular_avatar.core
 {
     [Serializable]
-    public struct MaterialSwitchObject
+    public class MaterialSwitchObject
     {
         public AvatarObjectReference Object;
         public Material Material;

Runtime/ReactiveObjects/ModularAvatarShapeChanger.cs

@@ -17,15 +17,16 @@ namespace nadena.dev.modular_avatar.core
     }
 
     [Serializable]
-    public struct ChangedShape
+    public class ChangedShape
     {
+        public AvatarObjectReference Object;
         public string ShapeName;
         public ShapeChangeType ChangeType;
         public float Value;
 
         public bool Equals(ChangedShape other)
         {
-            return ShapeName == other.ShapeName && ChangeType == other.ChangeType && Value.Equals(other.Value);
+            return Equals(Object, other.Object) && ShapeName == other.ShapeName && ChangeType == other.ChangeType && Value.Equals(other.Value);
         }
 
         public override bool Equals(object obj)
@@ -35,12 +36,12 @@ namespace nadena.dev.modular_avatar.core
 
         public override int GetHashCode()
         {
-            return HashCode.Combine(ShapeName, (int)ChangeType, Value);
+            return HashCode.Combine(Object, ShapeName, (int)ChangeType, Value);
         }
 
         public override string ToString()
         {
-            return $"{ShapeName} {ChangeType} {Value}";
+            return $"{Object.referencePath} {ShapeName} {ChangeType} {Value}";
         }
     }
 
@@ -48,14 +49,10 @@ namespace nadena.dev.modular_avatar.core
     [HelpURL("https://modular-avatar.nadena.dev/docs/reference/shape-changer?lang=auto")]
     public class ModularAvatarShapeChanger : ReactiveComponent
     {
-        [SerializeField] [FormerlySerializedAs("targetRenderer")]
-        private AvatarObjectReference m_targetRenderer;
-
-        public AvatarObjectReference targetRenderer
-        {
-            get => m_targetRenderer;
-            set => m_targetRenderer = value;
-        }
+        // Migration field to help with 1.10-beta series avatar data. Since this was never in a released version of MA,
+        // this migration support will be removed in 1.10.0.
+        [SerializeField] [FormerlySerializedAs("targetRenderer")] [HideInInspector]
+        private AvatarObjectReference m_targetRenderer = new();
 
         [SerializeField] [FormerlySerializedAs("Shapes")]
         private List<ChangedShape> m_shapes = new();
@@ -68,7 +65,44 @@ namespace nadena.dev.modular_avatar.core
 
         public override void ResolveReferences()
         {
-            m_targetRenderer?.Get(this);
+            foreach (var shape in m_shapes)
+            {
+                shape.Object?.Get(this);
+            }
+        }
+
+        private void OnEnable()
+        {
+            MigrateTargetRenderer();
+        }
+
+        protected override void OnValidate()
+        {
+            base.OnValidate();
+            MigrateTargetRenderer();
+        }
+
+        // Migrate early versions of MASC (from Modular Avatar 1.10.0-beta.4 or earlier) to the new format, where the
+        // target renderer is stored separately for each shape.
+        // This logic will be removed in 1.10.0.
+        private void MigrateTargetRenderer()
+        {
+            // Note: This method runs in the context of OnValidate, and therefore cannot touch any other unity objects.
+            if (!string.IsNullOrEmpty(m_targetRenderer.referencePath) || m_targetRenderer.targetObject != null)
+            {
+                foreach (var shape in m_shapes)
+                {
+                    if (shape.Object == null) shape.Object = new AvatarObjectReference();
+                    
+                    if (string.IsNullOrEmpty(shape.Object.referencePath) && shape.Object.targetObject == null)
+                    {
+                        shape.Object.referencePath = m_targetRenderer.referencePath;
+                        shape.Object.targetObject = m_targetRenderer.targetObject;
+                    }
+                }
+                m_targetRenderer.referencePath = null;
+                m_targetRenderer.targetObject = null;
+            }
         }
     }
 }