Fix #8789

Viewer/src/managers/sceneManager.ts

@@ -98,7 +98,7 @@ export class SceneManager {
     /**
      * Babylon's scene optimizer
      */
-    public sceneOptimizer: SceneOptimizer;
+    public sceneOptimizer?: SceneOptimizer;
     /**
      * Models displayed in this viewer.
      */
@@ -741,7 +741,7 @@ export class SceneManager {
 
         this.onSceneOptimizerConfiguredObservable.notifyObservers({
             sceneManager: this,
-            object: this.sceneOptimizer,
+            object: this.sceneOptimizer!,
             newConfiguration: optimizerConfig
         });
     }

Viewer/src/managers/telemetryManager.ts

@@ -118,7 +118,6 @@ export class TelemetryManager {
      */
     public dispose() {
         this.onEventBroadcastedObservable.clear();
-        delete this.onEventBroadcastedObservable;
     }
 }
 

Viewer/src/templating/templateManager.ts

@@ -540,8 +540,6 @@ export class Template {
                 evt.htmlElement.removeEventListener(evt.eventName, evt.function);
             });
         }
-
-        delete this._fragment;
     }
 
     private _getTemplateAsHtml(templateConfig: ITemplateConfiguration): Promise<string> {

Viewer/src/viewer/viewerManager.ts

@@ -98,8 +98,6 @@ export class ViewerManager {
      * dispose the manager and all of its associated viewers
      */
     public dispose() {
-        delete this._onViewerAdded;
-
         for (let id in this._viewers) {
             this._viewers[id].dispose();
         }

Viewer/tests/commons/helper.ts

@@ -41,7 +41,7 @@ export class Helper {
     public static disposeViewer() {
         if (Helper.viewer != null) {
             Helper.viewer.dispose();
-            delete Helper.viewer;
+            (Helper.viewer as any)= null;
         }
     }
 

dist/preview release/babylon.d.ts

@@ -9414,7 +9414,7 @@ declare module BABYLON {
          * Internal only - manager for action
          * @hidden
          */
-        _actionManager: AbstractActionManager;
+        _actionManager: Nullable<AbstractActionManager>;
         /**
          * Adds action to chain of actions, may be a DoNothingAction
          * @param action defines the next action to execute
@@ -11663,7 +11663,6 @@ declare module BABYLON {
      * @see https://doc.babylonjs.com/how_to/how_to_use_procedural_textures
      */
     export class ProceduralTexture extends Texture {
-        isCube: boolean;
         /**
          * Define if the texture is enabled or not (disabled texture will not render)
          */
@@ -23468,7 +23467,6 @@ declare module BABYLON {
      * Actually, It is the base of lot of effects in the framework like post process, shadows, effect layers and rendering pipelines...
      */
     export class RenderTargetTexture extends Texture {
-        isCube: boolean;
         /**
          * The texture will only be rendered once which can be useful to improve performance if everything in your render is static for instance.
          */
@@ -23513,10 +23511,6 @@ declare module BABYLON {
          */
         renderSprites: boolean;
         /**
-         * Override the default coordinates mode to projection for RTT as it is the most common case for rendered textures.
-         */
-        coordinatesMode: number;
-        /**
          * Define the camera used to render the texture.
          */
         activeCamera: Nullable<Camera>;
@@ -23607,7 +23601,7 @@ declare module BABYLON {
         _generateMipMaps: boolean;
         protected _renderingManager: RenderingManager;
         /** @hidden */
-        _waitingRenderList: string[];
+        _waitingRenderList?: string[];
         protected _doNotChangeAspectRatio: boolean;
         protected _currentRefreshId: number;
         protected _refreshRate: number;
@@ -29374,11 +29368,13 @@ declare module BABYLON {
          */
         get position(): Vector3;
         set position(newPosition: Vector3);
+        protected _upVector: Vector3;
         /**
          * The vector the camera should consider as up.
          * (default is Vector3(0, 1, 0) aka Vector3.Up())
          */
-        upVector: Vector3;
+        set upVector(vec: Vector3);
+        get upVector(): Vector3;
         /**
          * Define the current limit on the left side for an orthographic camera
          * In scene unit
@@ -32122,11 +32118,13 @@ declare module BABYLON {
          * Gets or sets a boolean indicating that pointer move events must be supported on this mesh (false by default)
          */
         enablePointerMoveEvents: boolean;
+        private _renderingGroupId;
         /**
          * Specifies the rendering group id for this mesh (0 by default)
          * @see https://doc.babylonjs.com/resources/transparency_and_how_meshes_are_rendered#rendering-groups
          */
-        renderingGroupId: number;
+        get renderingGroupId(): number;
+        set renderingGroupId(value: number);
         private _material;
         /** Gets or sets current material */
         get material(): Nullable<Material>;
@@ -33858,7 +33856,7 @@ declare module BABYLON {
          * This is part of the texture as textures usually maps to one uv set.
          */
         coordinatesIndex: number;
-        private _coordinatesMode;
+        protected _coordinatesMode: number;
         /**
         * How a texture is mapped.
         *
@@ -33877,6 +33875,7 @@ declare module BABYLON {
         */
         set coordinatesMode(value: number);
         get coordinatesMode(): number;
+        private _wrapU;
         /**
         * | Value | Type               | Description |
         * | ----- | ------------------ | ----------- |
@@ -33884,7 +33883,9 @@ declare module BABYLON {
         * | 1     | WRAP_ADDRESSMODE   |             |
         * | 2     | MIRROR_ADDRESSMODE |             |
         */
-        wrapU: number;
+        get wrapU(): number;
+        set wrapU(value: number);
+        private _wrapV;
         /**
         * | Value | Type               | Description |
         * | ----- | ------------------ | ----------- |
@@ -33892,7 +33893,8 @@ declare module BABYLON {
         * | 1     | WRAP_ADDRESSMODE   |             |
         * | 2     | MIRROR_ADDRESSMODE |             |
         */
-        wrapV: number;
+        get wrapV(): number;
+        set wrapV(value: number);
         /**
         * | Value | Type               | Description |
         * | ----- | ------------------ | ----------- |
@@ -39353,8 +39355,6 @@ declare module BABYLON {
          * The material properties need to be setup according to the type of texture in use.
          */
         environmentBRDFTexture: BaseTexture;
-        /** @hidden */
-        protected _environmentTexture: Nullable<BaseTexture>;
         /**
          * Texture used in all pbr material as the reflection texture.
          * As in the majority of the scene they are the same (exception for multi room and so on),
@@ -41390,10 +41390,15 @@ declare module BABYLON {
          * Textures to keep.
          */
         textures: BaseTexture[];
+        /** @hidden */
+        protected _environmentTexture: Nullable<BaseTexture>;
         /**
-         * Environment texture for the scene
+         * Texture used in all pbr material as the reflection texture.
+         * As in the majority of the scene they are the same (exception for multi room and so on),
+         * this is easier to reference from here than from all the materials.
          */
-        environmentTexture: Nullable<BaseTexture>;
+        get environmentTexture(): Nullable<BaseTexture>;
+        set environmentTexture(value: Nullable<BaseTexture>);
         /**
          * The list of postprocesses added to the scene
          */
@@ -42812,7 +42817,6 @@ declare module BABYLON {
          */
         get position(): Vector3;
         set position(newPosition: Vector3);
-        protected _upVector: Vector3;
         protected _upToYMatrix: Matrix;
         protected _YToUpMatrix: Matrix;
         /**
@@ -50277,7 +50281,12 @@ declare module BABYLON {
         /**
          * Ratio for the scale of the gizmo (Default: 1)
          */
-        scaleRatio: number;
+        protected _scaleRatio: number;
+        /**
+         * Ratio for the scale of the gizmo (Default: 1)
+         */
+        set scaleRatio(value: number);
+        get scaleRatio(): number;
         /**
          * If a custom mesh has been set (Default: false)
          */
@@ -50299,10 +50308,12 @@ declare module BABYLON {
          * @param mesh The mesh to replace the default mesh of the gizmo
          */
         setCustomMesh(mesh: Mesh): void;
+        protected _updateGizmoRotationToMatchAttachedMesh: boolean;
         /**
          * If set the gizmo's rotation will be updated to match the attached mesh each frame (Default: true)
          */
-        updateGizmoRotationToMatchAttachedMesh: boolean;
+        set updateGizmoRotationToMatchAttachedMesh(value: boolean);
+        get updateGizmoRotationToMatchAttachedMesh(): boolean;
         /**
          * If set the gizmo's position will be updated to match the attached mesh each frame (Default: true)
          */
@@ -50422,9 +50433,7 @@ declare module BABYLON {
          */
         private _meshAttached;
         private _nodeAttached;
-        private _updateGizmoRotationToMatchAttachedMesh;
         private _snapDistance;
-        private _scaleRatio;
         /** Fires an event when any of it's sub gizmos are dragged */
         onDragStartObservable: Observable<unknown>;
         /** Fires an event when any of it's sub gizmos are released from dragging */
@@ -50535,7 +50544,7 @@ declare module BABYLON.Debug {
         /**
          * Gets the hosting scene
          */
-        scene: Scene;
+        scene: Nullable<Scene>;
         /**
          * Gets or sets a number used to scale line length
          */
@@ -53384,9 +53393,7 @@ declare module BABYLON {
         uniformScaleGizmo: AxisScaleGizmo;
         private _meshAttached;
         private _nodeAttached;
-        private _updateGizmoRotationToMatchAttachedMesh;
         private _snapDistance;
-        private _scaleRatio;
         private _uniformScalingMesh;
         private _octahedron;
         private _sensitivity;
@@ -60234,10 +60241,6 @@ declare module BABYLON {
          * The texture URL.
          */
         url: string;
-        /**
-         * The texture coordinates mode. As this texture is stored in a cube format, please modify carefully.
-         */
-        coordinatesMode: number;
         protected _isBlocking: boolean;
         /**
          * Sets wether or not the texture is blocking during loading.
@@ -61342,8 +61345,6 @@ declare module BABYLON {
         private _height;
         /** The URL to the image. */
         url: string;
-        /** The texture coordinates mode. As this texture is stored in a cube format, please modify carefully. */
-        coordinatesMode: number;
         /**
          * Instantiates an EquiRectangularCubeTexture from the following parameters.
          * @param url The location of the image

dist/preview release/babylon.module.d.ts

@@ -9534,6 +9534,7 @@ declare module "babylonjs/Actions/action" {
     import { Observable } from "babylonjs/Misc/observable";
     import { Condition } from "babylonjs/Actions/condition";
     import { AbstractActionManager } from "babylonjs/Actions/abstractActionManager";
+    import { Nullable } from "babylonjs/types";
     import { Scene } from "babylonjs/scene";
     import { ActionManager } from "babylonjs/Actions/actionManager";
     import { ActionEvent } from "babylonjs/Actions/actionEvent";
@@ -9573,7 +9574,7 @@ declare module "babylonjs/Actions/action" {
          * Internal only - manager for action
          * @hidden
          */
-        _actionManager: AbstractActionManager;
+        _actionManager: Nullable<AbstractActionManager>;
         /**
          * Adds action to chain of actions, may be a DoNothingAction
          * @param action defines the next action to execute
@@ -11924,7 +11925,6 @@ declare module "babylonjs/Materials/Textures/Procedurals/proceduralTexture" {
      * @see https://doc.babylonjs.com/how_to/how_to_use_procedural_textures
      */
     export class ProceduralTexture extends Texture {
-        isCube: boolean;
         /**
          * Define if the texture is enabled or not (disabled texture will not render)
          */
@@ -24320,7 +24320,6 @@ declare module "babylonjs/Materials/Textures/renderTargetTexture" {
      * Actually, It is the base of lot of effects in the framework like post process, shadows, effect layers and rendering pipelines...
      */
     export class RenderTargetTexture extends Texture {
-        isCube: boolean;
         /**
          * The texture will only be rendered once which can be useful to improve performance if everything in your render is static for instance.
          */
@@ -24365,10 +24364,6 @@ declare module "babylonjs/Materials/Textures/renderTargetTexture" {
          */
         renderSprites: boolean;
         /**
-         * Override the default coordinates mode to projection for RTT as it is the most common case for rendered textures.
-         */
-        coordinatesMode: number;
-        /**
          * Define the camera used to render the texture.
          */
         activeCamera: Nullable<Camera>;
@@ -24459,7 +24454,7 @@ declare module "babylonjs/Materials/Textures/renderTargetTexture" {
         _generateMipMaps: boolean;
         protected _renderingManager: RenderingManager;
         /** @hidden */
-        _waitingRenderList: string[];
+        _waitingRenderList?: string[];
         protected _doNotChangeAspectRatio: boolean;
         protected _currentRefreshId: number;
         protected _refreshRate: number;
@@ -30407,11 +30402,13 @@ declare module "babylonjs/Cameras/camera" {
          */
         get position(): Vector3;
         set position(newPosition: Vector3);
+        protected _upVector: Vector3;
         /**
          * The vector the camera should consider as up.
          * (default is Vector3(0, 1, 0) aka Vector3.Up())
          */
-        upVector: Vector3;
+        set upVector(vec: Vector3);
+        get upVector(): Vector3;
         /**
          * Define the current limit on the left side for an orthographic camera
          * In scene unit
@@ -33276,11 +33273,13 @@ declare module "babylonjs/Meshes/abstractMesh" {
          * Gets or sets a boolean indicating that pointer move events must be supported on this mesh (false by default)
          */
         enablePointerMoveEvents: boolean;
+        private _renderingGroupId;
         /**
          * Specifies the rendering group id for this mesh (0 by default)
          * @see https://doc.babylonjs.com/resources/transparency_and_how_meshes_are_rendered#rendering-groups
          */
-        renderingGroupId: number;
+        get renderingGroupId(): number;
+        set renderingGroupId(value: number);
         private _material;
         /** Gets or sets current material */
         get material(): Nullable<Material>;
@@ -35065,7 +35064,7 @@ declare module "babylonjs/Materials/Textures/baseTexture" {
          * This is part of the texture as textures usually maps to one uv set.
          */
         coordinatesIndex: number;
-        private _coordinatesMode;
+        protected _coordinatesMode: number;
         /**
         * How a texture is mapped.
         *
@@ -35084,6 +35083,7 @@ declare module "babylonjs/Materials/Textures/baseTexture" {
         */
         set coordinatesMode(value: number);
         get coordinatesMode(): number;
+        private _wrapU;
         /**
         * | Value | Type               | Description |
         * | ----- | ------------------ | ----------- |
@@ -35091,7 +35091,9 @@ declare module "babylonjs/Materials/Textures/baseTexture" {
         * | 1     | WRAP_ADDRESSMODE   |             |
         * | 2     | MIRROR_ADDRESSMODE |             |
         */
-        wrapU: number;
+        get wrapU(): number;
+        set wrapU(value: number);
+        private _wrapV;
         /**
         * | Value | Type               | Description |
         * | ----- | ------------------ | ----------- |
@@ -35099,7 +35101,8 @@ declare module "babylonjs/Materials/Textures/baseTexture" {
         * | 1     | WRAP_ADDRESSMODE   |             |
         * | 2     | MIRROR_ADDRESSMODE |             |
         */
-        wrapV: number;
+        get wrapV(): number;
+        set wrapV(value: number);
         /**
         * | Value | Type               | Description |
         * | ----- | ------------------ | ----------- |
@@ -40731,8 +40734,6 @@ declare module "babylonjs/scene" {
          * The material properties need to be setup according to the type of texture in use.
          */
         environmentBRDFTexture: BaseTexture;
-        /** @hidden */
-        protected _environmentTexture: Nullable<BaseTexture>;
         /**
          * Texture used in all pbr material as the reflection texture.
          * As in the majority of the scene they are the same (exception for multi room and so on),
@@ -42795,10 +42796,15 @@ declare module "babylonjs/abstractScene" {
          * Textures to keep.
          */
         textures: BaseTexture[];
+        /** @hidden */
+        protected _environmentTexture: Nullable<BaseTexture>;
         /**
-         * Environment texture for the scene
+         * Texture used in all pbr material as the reflection texture.
+         * As in the majority of the scene they are the same (exception for multi room and so on),
+         * this is easier to reference from here than from all the materials.
          */
-        environmentTexture: Nullable<BaseTexture>;
+        get environmentTexture(): Nullable<BaseTexture>;
+        set environmentTexture(value: Nullable<BaseTexture>);
         /**
          * The list of postprocesses added to the scene
          */
@@ -44312,7 +44318,6 @@ declare module "babylonjs/Cameras/arcRotateCamera" {
          */
         get position(): Vector3;
         set position(newPosition: Vector3);
-        protected _upVector: Vector3;
         protected _upToYMatrix: Matrix;
         protected _YToUpMatrix: Matrix;
         /**
@@ -52255,7 +52260,12 @@ declare module "babylonjs/Gizmos/gizmo" {
         /**
          * Ratio for the scale of the gizmo (Default: 1)
          */
-        scaleRatio: number;
+        protected _scaleRatio: number;
+        /**
+         * Ratio for the scale of the gizmo (Default: 1)
+         */
+        set scaleRatio(value: number);
+        get scaleRatio(): number;
         /**
          * If a custom mesh has been set (Default: false)
          */
@@ -52277,10 +52287,12 @@ declare module "babylonjs/Gizmos/gizmo" {
          * @param mesh The mesh to replace the default mesh of the gizmo
          */
         setCustomMesh(mesh: Mesh): void;
+        protected _updateGizmoRotationToMatchAttachedMesh: boolean;
         /**
          * If set the gizmo's rotation will be updated to match the attached mesh each frame (Default: true)
          */
-        updateGizmoRotationToMatchAttachedMesh: boolean;
+        set updateGizmoRotationToMatchAttachedMesh(value: boolean);
+        get updateGizmoRotationToMatchAttachedMesh(): boolean;
         /**
          * If set the gizmo's position will be updated to match the attached mesh each frame (Default: true)
          */
@@ -52421,9 +52433,7 @@ declare module "babylonjs/Gizmos/positionGizmo" {
          */
         private _meshAttached;
         private _nodeAttached;
-        private _updateGizmoRotationToMatchAttachedMesh;
         private _snapDistance;
-        private _scaleRatio;
         /** Fires an event when any of it's sub gizmos are dragged */
         onDragStartObservable: Observable<unknown>;
         /** Fires an event when any of it's sub gizmos are released from dragging */
@@ -52550,7 +52560,7 @@ declare module "babylonjs/Debug/axesViewer" {
         /**
          * Gets the hosting scene
          */
-        scene: Scene;
+        scene: Nullable<Scene>;
         /**
          * Gets or sets a number used to scale line length
          */
@@ -55638,9 +55648,7 @@ declare module "babylonjs/Gizmos/scaleGizmo" {
         uniformScaleGizmo: AxisScaleGizmo;
         private _meshAttached;
         private _nodeAttached;
-        private _updateGizmoRotationToMatchAttachedMesh;
         private _snapDistance;
-        private _scaleRatio;
         private _uniformScalingMesh;
         private _octahedron;
         private _sensitivity;
@@ -63036,10 +63044,6 @@ declare module "babylonjs/Materials/Textures/hdrCubeTexture" {
          * The texture URL.
          */
         url: string;
-        /**
-         * The texture coordinates mode. As this texture is stored in a cube format, please modify carefully.
-         */
-        coordinatesMode: number;
         protected _isBlocking: boolean;
         /**
          * Sets wether or not the texture is blocking during loading.
@@ -64219,8 +64223,6 @@ declare module "babylonjs/Materials/Textures/equiRectangularCubeTexture" {
         private _height;
         /** The URL to the image. */
         url: string;
-        /** The texture coordinates mode. As this texture is stored in a cube format, please modify carefully. */
-        coordinatesMode: number;
         /**
          * Instantiates an EquiRectangularCubeTexture from the following parameters.
          * @param url The location of the image
@@ -89036,7 +89038,7 @@ declare module BABYLON {
          * Internal only - manager for action
          * @hidden
          */
-        _actionManager: AbstractActionManager;
+        _actionManager: Nullable<AbstractActionManager>;
         /**
          * Adds action to chain of actions, may be a DoNothingAction
          * @param action defines the next action to execute
@@ -91285,7 +91287,6 @@ declare module BABYLON {
      * @see https://doc.babylonjs.com/how_to/how_to_use_procedural_textures
      */
     export class ProceduralTexture extends Texture {
-        isCube: boolean;
         /**
          * Define if the texture is enabled or not (disabled texture will not render)
          */
@@ -103090,7 +103091,6 @@ declare module BABYLON {
      * Actually, It is the base of lot of effects in the framework like post process, shadows, effect layers and rendering pipelines...
      */
     export class RenderTargetTexture extends Texture {
-        isCube: boolean;
         /**
          * The texture will only be rendered once which can be useful to improve performance if everything in your render is static for instance.
          */
@@ -103135,10 +103135,6 @@ declare module BABYLON {
          */
         renderSprites: boolean;
         /**
-         * Override the default coordinates mode to projection for RTT as it is the most common case for rendered textures.
-         */
-        coordinatesMode: number;
-        /**
          * Define the camera used to render the texture.
          */
         activeCamera: Nullable<Camera>;
@@ -103229,7 +103225,7 @@ declare module BABYLON {
         _generateMipMaps: boolean;
         protected _renderingManager: RenderingManager;
         /** @hidden */
-        _waitingRenderList: string[];
+        _waitingRenderList?: string[];
         protected _doNotChangeAspectRatio: boolean;
         protected _currentRefreshId: number;
         protected _refreshRate: number;
@@ -108996,11 +108992,13 @@ declare module BABYLON {
          */
         get position(): Vector3;
         set position(newPosition: Vector3);
+        protected _upVector: Vector3;
         /**
          * The vector the camera should consider as up.
          * (default is Vector3(0, 1, 0) aka Vector3.Up())
          */
-        upVector: Vector3;
+        set upVector(vec: Vector3);
+        get upVector(): Vector3;
         /**
          * Define the current limit on the left side for an orthographic camera
          * In scene unit
@@ -111744,11 +111742,13 @@ declare module BABYLON {
          * Gets or sets a boolean indicating that pointer move events must be supported on this mesh (false by default)
          */
         enablePointerMoveEvents: boolean;
+        private _renderingGroupId;
         /**
          * Specifies the rendering group id for this mesh (0 by default)
          * @see https://doc.babylonjs.com/resources/transparency_and_how_meshes_are_rendered#rendering-groups
          */
-        renderingGroupId: number;
+        get renderingGroupId(): number;
+        set renderingGroupId(value: number);
         private _material;
         /** Gets or sets current material */
         get material(): Nullable<Material>;
@@ -113480,7 +113480,7 @@ declare module BABYLON {
          * This is part of the texture as textures usually maps to one uv set.
          */
         coordinatesIndex: number;
-        private _coordinatesMode;
+        protected _coordinatesMode: number;
         /**
         * How a texture is mapped.
         *
@@ -113499,6 +113499,7 @@ declare module BABYLON {
         */
         set coordinatesMode(value: number);
         get coordinatesMode(): number;
+        private _wrapU;
         /**
         * | Value | Type               | Description |
         * | ----- | ------------------ | ----------- |
@@ -113506,7 +113507,9 @@ declare module BABYLON {
         * | 1     | WRAP_ADDRESSMODE   |             |
         * | 2     | MIRROR_ADDRESSMODE |             |
         */
-        wrapU: number;
+        get wrapU(): number;
+        set wrapU(value: number);
+        private _wrapV;
         /**
         * | Value | Type               | Description |
         * | ----- | ------------------ | ----------- |
@@ -113514,7 +113517,8 @@ declare module BABYLON {
         * | 1     | WRAP_ADDRESSMODE   |             |
         * | 2     | MIRROR_ADDRESSMODE |             |
         */
-        wrapV: number;
+        get wrapV(): number;
+        set wrapV(value: number);
         /**
         * | Value | Type               | Description |
         * | ----- | ------------------ | ----------- |
@@ -118975,8 +118979,6 @@ declare module BABYLON {
          * The material properties need to be setup according to the type of texture in use.
          */
         environmentBRDFTexture: BaseTexture;
-        /** @hidden */
-        protected _environmentTexture: Nullable<BaseTexture>;
         /**
          * Texture used in all pbr material as the reflection texture.
          * As in the majority of the scene they are the same (exception for multi room and so on),
@@ -121012,10 +121014,15 @@ declare module BABYLON {
          * Textures to keep.
          */
         textures: BaseTexture[];
+        /** @hidden */
+        protected _environmentTexture: Nullable<BaseTexture>;
         /**
-         * Environment texture for the scene
+         * Texture used in all pbr material as the reflection texture.
+         * As in the majority of the scene they are the same (exception for multi room and so on),
+         * this is easier to reference from here than from all the materials.
          */
-        environmentTexture: Nullable<BaseTexture>;
+        get environmentTexture(): Nullable<BaseTexture>;
+        set environmentTexture(value: Nullable<BaseTexture>);
         /**
          * The list of postprocesses added to the scene
          */
@@ -122434,7 +122441,6 @@ declare module BABYLON {
          */
         get position(): Vector3;
         set position(newPosition: Vector3);
-        protected _upVector: Vector3;
         protected _upToYMatrix: Matrix;
         protected _YToUpMatrix: Matrix;
         /**
@@ -129899,7 +129905,12 @@ declare module BABYLON {
         /**
          * Ratio for the scale of the gizmo (Default: 1)
          */
-        scaleRatio: number;
+        protected _scaleRatio: number;
+        /**
+         * Ratio for the scale of the gizmo (Default: 1)
+         */
+        set scaleRatio(value: number);
+        get scaleRatio(): number;
         /**
          * If a custom mesh has been set (Default: false)
          */
@@ -129921,10 +129932,12 @@ declare module BABYLON {
          * @param mesh The mesh to replace the default mesh of the gizmo
          */
         setCustomMesh(mesh: Mesh): void;
+        protected _updateGizmoRotationToMatchAttachedMesh: boolean;
         /**
          * If set the gizmo's rotation will be updated to match the attached mesh each frame (Default: true)
          */
-        updateGizmoRotationToMatchAttachedMesh: boolean;
+        set updateGizmoRotationToMatchAttachedMesh(value: boolean);
+        get updateGizmoRotationToMatchAttachedMesh(): boolean;
         /**
          * If set the gizmo's position will be updated to match the attached mesh each frame (Default: true)
          */
@@ -130044,9 +130057,7 @@ declare module BABYLON {
          */
         private _meshAttached;
         private _nodeAttached;
-        private _updateGizmoRotationToMatchAttachedMesh;
         private _snapDistance;
-        private _scaleRatio;
         /** Fires an event when any of it's sub gizmos are dragged */
         onDragStartObservable: Observable<unknown>;
         /** Fires an event when any of it's sub gizmos are released from dragging */
@@ -130157,7 +130168,7 @@ declare module BABYLON.Debug {
         /**
          * Gets the hosting scene
          */
-        scene: Scene;
+        scene: Nullable<Scene>;
         /**
          * Gets or sets a number used to scale line length
          */
@@ -133006,9 +133017,7 @@ declare module BABYLON {
         uniformScaleGizmo: AxisScaleGizmo;
         private _meshAttached;
         private _nodeAttached;
-        private _updateGizmoRotationToMatchAttachedMesh;
         private _snapDistance;
-        private _scaleRatio;
         private _uniformScalingMesh;
         private _octahedron;
         private _sensitivity;
@@ -139856,10 +139865,6 @@ declare module BABYLON {
          * The texture URL.
          */
         url: string;
-        /**
-         * The texture coordinates mode. As this texture is stored in a cube format, please modify carefully.
-         */
-        coordinatesMode: number;
         protected _isBlocking: boolean;
         /**
          * Sets wether or not the texture is blocking during loading.
@@ -140964,8 +140969,6 @@ declare module BABYLON {
         private _height;
         /** The URL to the image. */
         url: string;
-        /** The texture coordinates mode. As this texture is stored in a cube format, please modify carefully. */
-        coordinatesMode: number;
         /**
          * Instantiates an EquiRectangularCubeTexture from the following parameters.
          * @param url The location of the image

dist/preview release/documentation.d.ts

@@ -9414,7 +9414,7 @@ declare module BABYLON {
          * Internal only - manager for action
          * @hidden
          */
-        _actionManager: AbstractActionManager;
+        _actionManager: Nullable<AbstractActionManager>;
         /**
          * Adds action to chain of actions, may be a DoNothingAction
          * @param action defines the next action to execute
@@ -11663,7 +11663,6 @@ declare module BABYLON {
      * @see https://doc.babylonjs.com/how_to/how_to_use_procedural_textures
      */
     export class ProceduralTexture extends Texture {
-        isCube: boolean;
         /**
          * Define if the texture is enabled or not (disabled texture will not render)
          */
@@ -23468,7 +23467,6 @@ declare module BABYLON {
      * Actually, It is the base of lot of effects in the framework like post process, shadows, effect layers and rendering pipelines...
      */
     export class RenderTargetTexture extends Texture {
-        isCube: boolean;
         /**
          * The texture will only be rendered once which can be useful to improve performance if everything in your render is static for instance.
          */
@@ -23513,10 +23511,6 @@ declare module BABYLON {
          */
         renderSprites: boolean;
         /**
-         * Override the default coordinates mode to projection for RTT as it is the most common case for rendered textures.
-         */
-        coordinatesMode: number;
-        /**
          * Define the camera used to render the texture.
          */
         activeCamera: Nullable<Camera>;
@@ -23607,7 +23601,7 @@ declare module BABYLON {
         _generateMipMaps: boolean;
         protected _renderingManager: RenderingManager;
         /** @hidden */
-        _waitingRenderList: string[];
+        _waitingRenderList?: string[];
         protected _doNotChangeAspectRatio: boolean;
         protected _currentRefreshId: number;
         protected _refreshRate: number;
@@ -29374,11 +29368,13 @@ declare module BABYLON {
          */
         get position(): Vector3;
         set position(newPosition: Vector3);
+        protected _upVector: Vector3;
         /**
          * The vector the camera should consider as up.
          * (default is Vector3(0, 1, 0) aka Vector3.Up())
          */
-        upVector: Vector3;
+        set upVector(vec: Vector3);
+        get upVector(): Vector3;
         /**
          * Define the current limit on the left side for an orthographic camera
          * In scene unit
@@ -32122,11 +32118,13 @@ declare module BABYLON {
          * Gets or sets a boolean indicating that pointer move events must be supported on this mesh (false by default)
          */
         enablePointerMoveEvents: boolean;
+        private _renderingGroupId;
         /**
          * Specifies the rendering group id for this mesh (0 by default)
          * @see https://doc.babylonjs.com/resources/transparency_and_how_meshes_are_rendered#rendering-groups
          */
-        renderingGroupId: number;
+        get renderingGroupId(): number;
+        set renderingGroupId(value: number);
         private _material;
         /** Gets or sets current material */
         get material(): Nullable<Material>;
@@ -33858,7 +33856,7 @@ declare module BABYLON {
          * This is part of the texture as textures usually maps to one uv set.
          */
         coordinatesIndex: number;
-        private _coordinatesMode;
+        protected _coordinatesMode: number;
         /**
         * How a texture is mapped.
         *
@@ -33877,6 +33875,7 @@ declare module BABYLON {
         */
         set coordinatesMode(value: number);
         get coordinatesMode(): number;
+        private _wrapU;
         /**
         * | Value | Type               | Description |
         * | ----- | ------------------ | ----------- |
@@ -33884,7 +33883,9 @@ declare module BABYLON {
         * | 1     | WRAP_ADDRESSMODE   |             |
         * | 2     | MIRROR_ADDRESSMODE |             |
         */
-        wrapU: number;
+        get wrapU(): number;
+        set wrapU(value: number);
+        private _wrapV;
         /**
         * | Value | Type               | Description |
         * | ----- | ------------------ | ----------- |
@@ -33892,7 +33893,8 @@ declare module BABYLON {
         * | 1     | WRAP_ADDRESSMODE   |             |
         * | 2     | MIRROR_ADDRESSMODE |             |
         */
-        wrapV: number;
+        get wrapV(): number;
+        set wrapV(value: number);
         /**
         * | Value | Type               | Description |
         * | ----- | ------------------ | ----------- |
@@ -39353,8 +39355,6 @@ declare module BABYLON {
          * The material properties need to be setup according to the type of texture in use.
          */
         environmentBRDFTexture: BaseTexture;
-        /** @hidden */
-        protected _environmentTexture: Nullable<BaseTexture>;
         /**
          * Texture used in all pbr material as the reflection texture.
          * As in the majority of the scene they are the same (exception for multi room and so on),
@@ -41390,10 +41390,15 @@ declare module BABYLON {
          * Textures to keep.
          */
         textures: BaseTexture[];
+        /** @hidden */
+        protected _environmentTexture: Nullable<BaseTexture>;
         /**
-         * Environment texture for the scene
+         * Texture used in all pbr material as the reflection texture.
+         * As in the majority of the scene they are the same (exception for multi room and so on),
+         * this is easier to reference from here than from all the materials.
          */
-        environmentTexture: Nullable<BaseTexture>;
+        get environmentTexture(): Nullable<BaseTexture>;
+        set environmentTexture(value: Nullable<BaseTexture>);
         /**
          * The list of postprocesses added to the scene
          */
@@ -42812,7 +42817,6 @@ declare module BABYLON {
          */
         get position(): Vector3;
         set position(newPosition: Vector3);
-        protected _upVector: Vector3;
         protected _upToYMatrix: Matrix;
         protected _YToUpMatrix: Matrix;
         /**
@@ -50277,7 +50281,12 @@ declare module BABYLON {
         /**
          * Ratio for the scale of the gizmo (Default: 1)
          */
-        scaleRatio: number;
+        protected _scaleRatio: number;
+        /**
+         * Ratio for the scale of the gizmo (Default: 1)
+         */
+        set scaleRatio(value: number);
+        get scaleRatio(): number;
         /**
          * If a custom mesh has been set (Default: false)
          */
@@ -50299,10 +50308,12 @@ declare module BABYLON {
          * @param mesh The mesh to replace the default mesh of the gizmo
          */
         setCustomMesh(mesh: Mesh): void;
+        protected _updateGizmoRotationToMatchAttachedMesh: boolean;
         /**
          * If set the gizmo's rotation will be updated to match the attached mesh each frame (Default: true)
          */
-        updateGizmoRotationToMatchAttachedMesh: boolean;
+        set updateGizmoRotationToMatchAttachedMesh(value: boolean);
+        get updateGizmoRotationToMatchAttachedMesh(): boolean;
         /**
          * If set the gizmo's position will be updated to match the attached mesh each frame (Default: true)
          */
@@ -50422,9 +50433,7 @@ declare module BABYLON {
          */
         private _meshAttached;
         private _nodeAttached;
-        private _updateGizmoRotationToMatchAttachedMesh;
         private _snapDistance;
-        private _scaleRatio;
         /** Fires an event when any of it's sub gizmos are dragged */
         onDragStartObservable: Observable<unknown>;
         /** Fires an event when any of it's sub gizmos are released from dragging */
@@ -50535,7 +50544,7 @@ declare module BABYLON.Debug {
         /**
          * Gets the hosting scene
          */
-        scene: Scene;
+        scene: Nullable<Scene>;
         /**
          * Gets or sets a number used to scale line length
          */
@@ -53384,9 +53393,7 @@ declare module BABYLON {
         uniformScaleGizmo: AxisScaleGizmo;
         private _meshAttached;
         private _nodeAttached;
-        private _updateGizmoRotationToMatchAttachedMesh;
         private _snapDistance;
-        private _scaleRatio;
         private _uniformScalingMesh;
         private _octahedron;
         private _sensitivity;
@@ -60234,10 +60241,6 @@ declare module BABYLON {
          * The texture URL.
          */
         url: string;
-        /**
-         * The texture coordinates mode. As this texture is stored in a cube format, please modify carefully.
-         */
-        coordinatesMode: number;
         protected _isBlocking: boolean;
         /**
          * Sets wether or not the texture is blocking during loading.
@@ -61342,8 +61345,6 @@ declare module BABYLON {
         private _height;
         /** The URL to the image. */
         url: string;
-        /** The texture coordinates mode. As this texture is stored in a cube format, please modify carefully. */
-        coordinatesMode: number;
         /**
          * Instantiates an EquiRectangularCubeTexture from the following parameters.
          * @param url The location of the image
@@ -79978,10 +79979,6 @@ declare module BABYLON.GUI {
          */
         innerGlowColor: BABYLON.Color3;
         /**
-         * Gets or sets alpha value (default is 1.0)
-         */
-        alpha: number;
-        /**
          * Gets or sets the albedo color (Default is BABYLON.Color3(0.3, 0.35, 0.4))
          */
         albedoColor: BABYLON.Color3;

dist/preview release/gui/babylon.gui.d.ts

@@ -3892,10 +3892,6 @@ declare module BABYLON.GUI {
          */
         innerGlowColor: BABYLON.Color3;
         /**
-         * Gets or sets alpha value (default is 1.0)
-         */
-        alpha: number;
-        /**
          * Gets or sets the albedo color (Default is BABYLON.Color3(0.3, 0.35, 0.4))
          */
         albedoColor: BABYLON.Color3;

dist/preview release/gui/babylon.gui.js

@@ -16728,10 +16728,6 @@ var FluentMaterial = /** @class */ (function (_super) {
          */
         _this.innerGlowColor = new babylonjs_Misc_decorators__WEBPACK_IMPORTED_MODULE_1__["Color3"](1.0, 1.0, 1.0);
         /**
-         * Gets or sets alpha value (default is 1.0)
-         */
-        _this.alpha = 1.0;
-        /**
          * Gets or sets the albedo color (Default is Color3(0.3, 0.35, 0.4))
          */
         _this.albedoColor = new babylonjs_Misc_decorators__WEBPACK_IMPORTED_MODULE_1__["Color3"](0.3, 0.35, 0.4);
@@ -16926,9 +16922,6 @@ var FluentMaterial = /** @class */ (function (_super) {
         Object(babylonjs_Misc_decorators__WEBPACK_IMPORTED_MODULE_1__["serializeAsColor3"])()
     ], FluentMaterial.prototype, "innerGlowColor", void 0);
     Object(tslib__WEBPACK_IMPORTED_MODULE_0__["__decorate"])([
-        Object(babylonjs_Misc_decorators__WEBPACK_IMPORTED_MODULE_1__["serialize"])()
-    ], FluentMaterial.prototype, "alpha", void 0);
-    Object(tslib__WEBPACK_IMPORTED_MODULE_0__["__decorate"])([
         Object(babylonjs_Misc_decorators__WEBPACK_IMPORTED_MODULE_1__["serializeAsColor3"])()
     ], FluentMaterial.prototype, "albedoColor", void 0);
     Object(tslib__WEBPACK_IMPORTED_MODULE_0__["__decorate"])([

dist/preview release/gui/babylon.gui.module.d.ts

@@ -4125,10 +4125,6 @@ declare module "babylonjs-gui/3D/materials/fluentMaterial" {
          */
         innerGlowColor: Color3;
         /**
-         * Gets or sets alpha value (default is 1.0)
-         */
-        alpha: number;
-        /**
          * Gets or sets the albedo color (Default is Color3(0.3, 0.35, 0.4))
          */
         albedoColor: Color3;
@@ -8296,10 +8292,6 @@ declare module BABYLON.GUI {
          */
         innerGlowColor: BABYLON.Color3;
         /**
-         * Gets or sets alpha value (default is 1.0)
-         */
-        alpha: number;
-        /**
          * Gets or sets the albedo color (Default is BABYLON.Color3(0.3, 0.35, 0.4))
          */
         albedoColor: BABYLON.Color3;

dist/preview release/inspector/babylon.inspector.bundle.max.js

@@ -7,7 +7,7 @@
 		exports["babylonjs-inspector"] = factory(require("babylonjs-gui"), require("babylonjs-loaders"), require("babylonjs-materials"), require("babylonjs-serializers"), require("babylonjs"));
 	else
 		root["INSPECTOR"] = factory(root["BABYLON"]["GUI"], root["BABYLON"], root["BABYLON"], root["BABYLON"], root["BABYLON"]);
-})((typeof self !== "undefined" ? self : typeof global !== "undefined" ? global : this), function(__WEBPACK_EXTERNAL_MODULE_babylonjs_gui_2D_controls_image__, __WEBPACK_EXTERNAL_MODULE_babylonjs_loaders_glTF_index__, __WEBPACK_EXTERNAL_MODULE_babylonjs_materials_grid_gridMaterial__, __WEBPACK_EXTERNAL_MODULE_babylonjs_serializers_glTF_2_0_index__, __WEBPACK_EXTERNAL_MODULE_babylonjs_Misc_observable__) {
+})((typeof self !== "undefined" ? self : typeof global !== "undefined" ? global : this), function(__WEBPACK_EXTERNAL_MODULE_babylonjs_gui_2D_adtInstrumentation__, __WEBPACK_EXTERNAL_MODULE_babylonjs_loaders_glTF_index__, __WEBPACK_EXTERNAL_MODULE_babylonjs_materials_grid_gridMaterial__, __WEBPACK_EXTERNAL_MODULE_babylonjs_serializers_glTF_2_0_index__, __WEBPACK_EXTERNAL_MODULE_babylonjs_Misc_observable__) {
 return /******/ (function(modules) { // webpackBootstrap
 /******/ 	// The module cache
 /******/ 	var installedModules = {};
@@ -67729,7 +67729,7 @@ __webpack_require__.r(__webpack_exports__);
 /* harmony import */ var react__WEBPACK_IMPORTED_MODULE_1___default = /*#__PURE__*/__webpack_require__.n(react__WEBPACK_IMPORTED_MODULE_1__);
 /* harmony import */ var _lineContainerComponent__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! ../../../lineContainerComponent */ "./components/actionTabs/lineContainerComponent.tsx");
 /* harmony import */ var _lines_textLineComponent__WEBPACK_IMPORTED_MODULE_3__ = __webpack_require__(/*! ../../../lines/textLineComponent */ "./components/actionTabs/lines/textLineComponent.tsx");
-/* harmony import */ var babylonjs_gui_2D_controls_control__WEBPACK_IMPORTED_MODULE_4__ = __webpack_require__(/*! babylonjs-gui/2D/controls/control */ "babylonjs-gui/2D/controls/image");
+/* harmony import */ var babylonjs_gui_2D_controls_control__WEBPACK_IMPORTED_MODULE_4__ = __webpack_require__(/*! babylonjs-gui/2D/controls/control */ "babylonjs-gui/2D/adtInstrumentation");
 /* harmony import */ var babylonjs_gui_2D_controls_control__WEBPACK_IMPORTED_MODULE_4___default = /*#__PURE__*/__webpack_require__.n(babylonjs_gui_2D_controls_control__WEBPACK_IMPORTED_MODULE_4__);
 /* harmony import */ var _lines_sliderLineComponent__WEBPACK_IMPORTED_MODULE_5__ = __webpack_require__(/*! ../../../lines/sliderLineComponent */ "./components/actionTabs/lines/sliderLineComponent.tsx");
 /* harmony import */ var _lines_floatLineComponent__WEBPACK_IMPORTED_MODULE_6__ = __webpack_require__(/*! ../../../lines/floatLineComponent */ "./components/actionTabs/lines/floatLineComponent.tsx");
@@ -68035,7 +68035,7 @@ __webpack_require__.r(__webpack_exports__);
 /* harmony import */ var react__WEBPACK_IMPORTED_MODULE_1___default = /*#__PURE__*/__webpack_require__.n(react__WEBPACK_IMPORTED_MODULE_1__);
 /* harmony import */ var _commonControlPropertyGridComponent__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! ./commonControlPropertyGridComponent */ "./components/actionTabs/tabs/propertyGrids/gui/commonControlPropertyGridComponent.tsx");
 /* harmony import */ var _lineContainerComponent__WEBPACK_IMPORTED_MODULE_3__ = __webpack_require__(/*! ../../../lineContainerComponent */ "./components/actionTabs/lineContainerComponent.tsx");
-/* harmony import */ var babylonjs_gui_2D_controls_image__WEBPACK_IMPORTED_MODULE_4__ = __webpack_require__(/*! babylonjs-gui/2D/controls/image */ "babylonjs-gui/2D/controls/image");
+/* harmony import */ var babylonjs_gui_2D_controls_image__WEBPACK_IMPORTED_MODULE_4__ = __webpack_require__(/*! babylonjs-gui/2D/controls/image */ "babylonjs-gui/2D/adtInstrumentation");
 /* harmony import */ var babylonjs_gui_2D_controls_image__WEBPACK_IMPORTED_MODULE_4___default = /*#__PURE__*/__webpack_require__.n(babylonjs_gui_2D_controls_image__WEBPACK_IMPORTED_MODULE_4__);
 /* harmony import */ var _lines_floatLineComponent__WEBPACK_IMPORTED_MODULE_5__ = __webpack_require__(/*! ../../../lines/floatLineComponent */ "./components/actionTabs/lines/floatLineComponent.tsx");
 /* harmony import */ var _lines_checkBoxLineComponent__WEBPACK_IMPORTED_MODULE_6__ = __webpack_require__(/*! ../../../lines/checkBoxLineComponent */ "./components/actionTabs/lines/checkBoxLineComponent.tsx");
@@ -68449,7 +68449,7 @@ __webpack_require__.r(__webpack_exports__);
 /* harmony import */ var react__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! react */ "../../node_modules/react/index.js");
 /* harmony import */ var react__WEBPACK_IMPORTED_MODULE_1___default = /*#__PURE__*/__webpack_require__.n(react__WEBPACK_IMPORTED_MODULE_1__);
 /* harmony import */ var _commonControlPropertyGridComponent__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! ./commonControlPropertyGridComponent */ "./components/actionTabs/tabs/propertyGrids/gui/commonControlPropertyGridComponent.tsx");
-/* harmony import */ var babylonjs_gui_2D_controls_textBlock__WEBPACK_IMPORTED_MODULE_3__ = __webpack_require__(/*! babylonjs-gui/2D/controls/textBlock */ "babylonjs-gui/2D/controls/image");
+/* harmony import */ var babylonjs_gui_2D_controls_textBlock__WEBPACK_IMPORTED_MODULE_3__ = __webpack_require__(/*! babylonjs-gui/2D/controls/textBlock */ "babylonjs-gui/2D/adtInstrumentation");
 /* harmony import */ var babylonjs_gui_2D_controls_textBlock__WEBPACK_IMPORTED_MODULE_3___default = /*#__PURE__*/__webpack_require__.n(babylonjs_gui_2D_controls_textBlock__WEBPACK_IMPORTED_MODULE_3__);
 /* harmony import */ var _lineContainerComponent__WEBPACK_IMPORTED_MODULE_4__ = __webpack_require__(/*! ../../../lineContainerComponent */ "./components/actionTabs/lineContainerComponent.tsx");
 /* harmony import */ var _lines_textInputLineComponent__WEBPACK_IMPORTED_MODULE_5__ = __webpack_require__(/*! ../../../lines/textInputLineComponent */ "./components/actionTabs/lines/textInputLineComponent.tsx");
@@ -69931,7 +69931,7 @@ __webpack_require__.r(__webpack_exports__);
 /* harmony import */ var _lines_optionsLineComponent__WEBPACK_IMPORTED_MODULE_9__ = __webpack_require__(/*! ../../../lines/optionsLineComponent */ "./components/actionTabs/lines/optionsLineComponent.tsx");
 /* harmony import */ var _lines_fileButtonLineComponent__WEBPACK_IMPORTED_MODULE_10__ = __webpack_require__(/*! ../../../lines/fileButtonLineComponent */ "./components/actionTabs/lines/fileButtonLineComponent.tsx");
 /* harmony import */ var _lines_valueLineComponent__WEBPACK_IMPORTED_MODULE_11__ = __webpack_require__(/*! ../../../lines/valueLineComponent */ "./components/actionTabs/lines/valueLineComponent.tsx");
-/* harmony import */ var babylonjs_gui_2D_adtInstrumentation__WEBPACK_IMPORTED_MODULE_12__ = __webpack_require__(/*! babylonjs-gui/2D/adtInstrumentation */ "babylonjs-gui/2D/controls/image");
+/* harmony import */ var babylonjs_gui_2D_adtInstrumentation__WEBPACK_IMPORTED_MODULE_12__ = __webpack_require__(/*! babylonjs-gui/2D/adtInstrumentation */ "babylonjs-gui/2D/adtInstrumentation");
 /* harmony import */ var babylonjs_gui_2D_adtInstrumentation__WEBPACK_IMPORTED_MODULE_12___default = /*#__PURE__*/__webpack_require__.n(babylonjs_gui_2D_adtInstrumentation__WEBPACK_IMPORTED_MODULE_12__);
 /* harmony import */ var _customPropertyGridComponent__WEBPACK_IMPORTED_MODULE_13__ = __webpack_require__(/*! ../customPropertyGridComponent */ "./components/actionTabs/tabs/propertyGrids/customPropertyGridComponent.tsx");
 /* harmony import */ var _lines_buttonLineComponent__WEBPACK_IMPORTED_MODULE_14__ = __webpack_require__(/*! ../../../lines/buttonLineComponent */ "./components/actionTabs/lines/buttonLineComponent.tsx");
@@ -78773,6 +78773,9 @@ var Inspector = /** @class */ (function () {
         this._NewCanvasContainer.style.height = "100%";
     };
     Inspector._DestroyCanvasContainer = function () {
+        if (!this._NewCanvasContainer) {
+            return;
+        }
         var parentControl = this._NewCanvasContainer.parentElement;
         while (this._NewCanvasContainer.childElementCount > 0) {
             var child = this._NewCanvasContainer.childNodes[0];
@@ -78781,7 +78784,7 @@ var Inspector = /** @class */ (function () {
         }
         parentControl.removeChild(this._NewCanvasContainer);
         parentControl.style.display = this._NewCanvasContainer.style.display;
-        delete this._NewCanvasContainer;
+        this._NewCanvasContainer = null;
     };
     Inspector._Cleanup = function () {
         var _this = this;
@@ -79162,14 +79165,14 @@ var Tools = /** @class */ (function () {
 
 /***/ }),
 
-/***/ "babylonjs-gui/2D/controls/image":
+/***/ "babylonjs-gui/2D/adtInstrumentation":
 /*!************************************************************************************************************************!*\
   !*** external {"root":["BABYLON","GUI"],"commonjs":"babylonjs-gui","commonjs2":"babylonjs-gui","amd":"babylonjs-gui"} ***!
   \************************************************************************************************************************/
 /*! no static exports found */
 /***/ (function(module, exports) {
 
-module.exports = __WEBPACK_EXTERNAL_MODULE_babylonjs_gui_2D_controls_image__;
+module.exports = __WEBPACK_EXTERNAL_MODULE_babylonjs_gui_2D_adtInstrumentation__;
 
 /***/ }),
 

dist/preview release/packagesSizeBaseLine.json

@@ -1 +1 @@
-{"thinEngineOnly":117231,"engineOnly":153671,"sceneOnly":517938,"minGridMaterial":656466,"minStandardMaterial":805891}
+{"thinEngineOnly":117231,"engineOnly":153671,"sceneOnly":518426,"minGridMaterial":656950,"minStandardMaterial":806655}

dist/preview release/serializers/babylon.glTF2Serializer.js

@@ -429,7 +429,7 @@ var KHR_lights_punctual = /** @class */ (function () {
     }
     /** @hidden */
     KHR_lights_punctual.prototype.dispose = function () {
-        delete this._lights;
+        this._lights = null;
     };
     Object.defineProperty(KHR_lights_punctual.prototype, "wasUsed", {
         /** @hidden */

dist/preview release/serializers/babylonjs.serializers.js

@@ -614,7 +614,7 @@ var KHR_lights_punctual = /** @class */ (function () {
     }
     /** @hidden */
     KHR_lights_punctual.prototype.dispose = function () {
-        delete this._lights;
+        this._lights = null;
     };
     Object.defineProperty(KHR_lights_punctual.prototype, "wasUsed", {
         /** @hidden */

dist/preview release/viewer/babylon.module.d.ts

@@ -9534,6 +9534,7 @@ declare module "babylonjs/Actions/action" {
     import { Observable } from "babylonjs/Misc/observable";
     import { Condition } from "babylonjs/Actions/condition";
     import { AbstractActionManager } from "babylonjs/Actions/abstractActionManager";
+    import { Nullable } from "babylonjs/types";
     import { Scene } from "babylonjs/scene";
     import { ActionManager } from "babylonjs/Actions/actionManager";
     import { ActionEvent } from "babylonjs/Actions/actionEvent";
@@ -9573,7 +9574,7 @@ declare module "babylonjs/Actions/action" {
          * Internal only - manager for action
          * @hidden
          */
-        _actionManager: AbstractActionManager;
+        _actionManager: Nullable<AbstractActionManager>;
         /**
          * Adds action to chain of actions, may be a DoNothingAction
          * @param action defines the next action to execute
@@ -11924,7 +11925,6 @@ declare module "babylonjs/Materials/Textures/Procedurals/proceduralTexture" {
      * @see https://doc.babylonjs.com/how_to/how_to_use_procedural_textures
      */
     export class ProceduralTexture extends Texture {
-        isCube: boolean;
         /**
          * Define if the texture is enabled or not (disabled texture will not render)
          */
@@ -24320,7 +24320,6 @@ declare module "babylonjs/Materials/Textures/renderTargetTexture" {
      * Actually, It is the base of lot of effects in the framework like post process, shadows, effect layers and rendering pipelines...
      */
     export class RenderTargetTexture extends Texture {
-        isCube: boolean;
         /**
          * The texture will only be rendered once which can be useful to improve performance if everything in your render is static for instance.
          */
@@ -24365,10 +24364,6 @@ declare module "babylonjs/Materials/Textures/renderTargetTexture" {
          */
         renderSprites: boolean;
         /**
-         * Override the default coordinates mode to projection for RTT as it is the most common case for rendered textures.
-         */
-        coordinatesMode: number;
-        /**
          * Define the camera used to render the texture.
          */
         activeCamera: Nullable<Camera>;
@@ -24459,7 +24454,7 @@ declare module "babylonjs/Materials/Textures/renderTargetTexture" {
         _generateMipMaps: boolean;
         protected _renderingManager: RenderingManager;
         /** @hidden */
-        _waitingRenderList: string[];
+        _waitingRenderList?: string[];
         protected _doNotChangeAspectRatio: boolean;
         protected _currentRefreshId: number;
         protected _refreshRate: number;
@@ -30407,11 +30402,13 @@ declare module "babylonjs/Cameras/camera" {
          */
         get position(): Vector3;
         set position(newPosition: Vector3);
+        protected _upVector: Vector3;
         /**
          * The vector the camera should consider as up.
          * (default is Vector3(0, 1, 0) aka Vector3.Up())
          */
-        upVector: Vector3;
+        set upVector(vec: Vector3);
+        get upVector(): Vector3;
         /**
          * Define the current limit on the left side for an orthographic camera
          * In scene unit
@@ -33276,11 +33273,13 @@ declare module "babylonjs/Meshes/abstractMesh" {
          * Gets or sets a boolean indicating that pointer move events must be supported on this mesh (false by default)
          */
         enablePointerMoveEvents: boolean;
+        private _renderingGroupId;
         /**
          * Specifies the rendering group id for this mesh (0 by default)
          * @see https://doc.babylonjs.com/resources/transparency_and_how_meshes_are_rendered#rendering-groups
          */
-        renderingGroupId: number;
+        get renderingGroupId(): number;
+        set renderingGroupId(value: number);
         private _material;
         /** Gets or sets current material */
         get material(): Nullable<Material>;
@@ -35065,7 +35064,7 @@ declare module "babylonjs/Materials/Textures/baseTexture" {
          * This is part of the texture as textures usually maps to one uv set.
          */
         coordinatesIndex: number;
-        private _coordinatesMode;
+        protected _coordinatesMode: number;
         /**
         * How a texture is mapped.
         *
@@ -35084,6 +35083,7 @@ declare module "babylonjs/Materials/Textures/baseTexture" {
         */
         set coordinatesMode(value: number);
         get coordinatesMode(): number;
+        private _wrapU;
         /**
         * | Value | Type               | Description |
         * | ----- | ------------------ | ----------- |
@@ -35091,7 +35091,9 @@ declare module "babylonjs/Materials/Textures/baseTexture" {
         * | 1     | WRAP_ADDRESSMODE   |             |
         * | 2     | MIRROR_ADDRESSMODE |             |
         */
-        wrapU: number;
+        get wrapU(): number;
+        set wrapU(value: number);
+        private _wrapV;
         /**
         * | Value | Type               | Description |
         * | ----- | ------------------ | ----------- |
@@ -35099,7 +35101,8 @@ declare module "babylonjs/Materials/Textures/baseTexture" {
         * | 1     | WRAP_ADDRESSMODE   |             |
         * | 2     | MIRROR_ADDRESSMODE |             |
         */
-        wrapV: number;
+        get wrapV(): number;
+        set wrapV(value: number);
         /**
         * | Value | Type               | Description |
         * | ----- | ------------------ | ----------- |
@@ -40731,8 +40734,6 @@ declare module "babylonjs/scene" {
          * The material properties need to be setup according to the type of texture in use.
          */
         environmentBRDFTexture: BaseTexture;
-        /** @hidden */
-        protected _environmentTexture: Nullable<BaseTexture>;
         /**
          * Texture used in all pbr material as the reflection texture.
          * As in the majority of the scene they are the same (exception for multi room and so on),
@@ -42795,10 +42796,15 @@ declare module "babylonjs/abstractScene" {
          * Textures to keep.
          */
         textures: BaseTexture[];
+        /** @hidden */
+        protected _environmentTexture: Nullable<BaseTexture>;
         /**
-         * Environment texture for the scene
+         * Texture used in all pbr material as the reflection texture.
+         * As in the majority of the scene they are the same (exception for multi room and so on),
+         * this is easier to reference from here than from all the materials.
          */
-        environmentTexture: Nullable<BaseTexture>;
+        get environmentTexture(): Nullable<BaseTexture>;
+        set environmentTexture(value: Nullable<BaseTexture>);
         /**
          * The list of postprocesses added to the scene
          */
@@ -44312,7 +44318,6 @@ declare module "babylonjs/Cameras/arcRotateCamera" {
          */
         get position(): Vector3;
         set position(newPosition: Vector3);
-        protected _upVector: Vector3;
         protected _upToYMatrix: Matrix;
         protected _YToUpMatrix: Matrix;
         /**
@@ -52255,7 +52260,12 @@ declare module "babylonjs/Gizmos/gizmo" {
         /**
          * Ratio for the scale of the gizmo (Default: 1)
          */
-        scaleRatio: number;
+        protected _scaleRatio: number;
+        /**
+         * Ratio for the scale of the gizmo (Default: 1)
+         */
+        set scaleRatio(value: number);
+        get scaleRatio(): number;
         /**
          * If a custom mesh has been set (Default: false)
          */
@@ -52277,10 +52287,12 @@ declare module "babylonjs/Gizmos/gizmo" {
          * @param mesh The mesh to replace the default mesh of the gizmo
          */
         setCustomMesh(mesh: Mesh): void;
+        protected _updateGizmoRotationToMatchAttachedMesh: boolean;
         /**
          * If set the gizmo's rotation will be updated to match the attached mesh each frame (Default: true)
          */
-        updateGizmoRotationToMatchAttachedMesh: boolean;
+        set updateGizmoRotationToMatchAttachedMesh(value: boolean);
+        get updateGizmoRotationToMatchAttachedMesh(): boolean;
         /**
          * If set the gizmo's position will be updated to match the attached mesh each frame (Default: true)
          */
@@ -52421,9 +52433,7 @@ declare module "babylonjs/Gizmos/positionGizmo" {
          */
         private _meshAttached;
         private _nodeAttached;
-        private _updateGizmoRotationToMatchAttachedMesh;
         private _snapDistance;
-        private _scaleRatio;
         /** Fires an event when any of it's sub gizmos are dragged */
         onDragStartObservable: Observable<unknown>;
         /** Fires an event when any of it's sub gizmos are released from dragging */
@@ -52550,7 +52560,7 @@ declare module "babylonjs/Debug/axesViewer" {
         /**
          * Gets the hosting scene
          */
-        scene: Scene;
+        scene: Nullable<Scene>;
         /**
          * Gets or sets a number used to scale line length
          */
@@ -55638,9 +55648,7 @@ declare module "babylonjs/Gizmos/scaleGizmo" {
         uniformScaleGizmo: AxisScaleGizmo;
         private _meshAttached;
         private _nodeAttached;
-        private _updateGizmoRotationToMatchAttachedMesh;
         private _snapDistance;
-        private _scaleRatio;
         private _uniformScalingMesh;
         private _octahedron;
         private _sensitivity;
@@ -63036,10 +63044,6 @@ declare module "babylonjs/Materials/Textures/hdrCubeTexture" {
          * The texture URL.
          */
         url: string;
-        /**
-         * The texture coordinates mode. As this texture is stored in a cube format, please modify carefully.
-         */
-        coordinatesMode: number;
         protected _isBlocking: boolean;
         /**
          * Sets wether or not the texture is blocking during loading.
@@ -64219,8 +64223,6 @@ declare module "babylonjs/Materials/Textures/equiRectangularCubeTexture" {
         private _height;
         /** The URL to the image. */
         url: string;
-        /** The texture coordinates mode. As this texture is stored in a cube format, please modify carefully. */
-        coordinatesMode: number;
         /**
          * Instantiates an EquiRectangularCubeTexture from the following parameters.
          * @param url The location of the image
@@ -89036,7 +89038,7 @@ declare module BABYLON {
          * Internal only - manager for action
          * @hidden
          */
-        _actionManager: AbstractActionManager;
+        _actionManager: Nullable<AbstractActionManager>;
         /**
          * Adds action to chain of actions, may be a DoNothingAction
          * @param action defines the next action to execute
@@ -91285,7 +91287,6 @@ declare module BABYLON {
      * @see https://doc.babylonjs.com/how_to/how_to_use_procedural_textures
      */
     export class ProceduralTexture extends Texture {
-        isCube: boolean;
         /**
          * Define if the texture is enabled or not (disabled texture will not render)
          */
@@ -103090,7 +103091,6 @@ declare module BABYLON {
      * Actually, It is the base of lot of effects in the framework like post process, shadows, effect layers and rendering pipelines...
      */
     export class RenderTargetTexture extends Texture {
-        isCube: boolean;
         /**
          * The texture will only be rendered once which can be useful to improve performance if everything in your render is static for instance.
          */
@@ -103135,10 +103135,6 @@ declare module BABYLON {
          */
         renderSprites: boolean;
         /**
-         * Override the default coordinates mode to projection for RTT as it is the most common case for rendered textures.
-         */
-        coordinatesMode: number;
-        /**
          * Define the camera used to render the texture.
          */
         activeCamera: Nullable<Camera>;
@@ -103229,7 +103225,7 @@ declare module BABYLON {
         _generateMipMaps: boolean;
         protected _renderingManager: RenderingManager;
         /** @hidden */
-        _waitingRenderList: string[];
+        _waitingRenderList?: string[];
         protected _doNotChangeAspectRatio: boolean;
         protected _currentRefreshId: number;
         protected _refreshRate: number;
@@ -108996,11 +108992,13 @@ declare module BABYLON {
          */
         get position(): Vector3;
         set position(newPosition: Vector3);
+        protected _upVector: Vector3;
         /**
          * The vector the camera should consider as up.
          * (default is Vector3(0, 1, 0) aka Vector3.Up())
          */
-        upVector: Vector3;
+        set upVector(vec: Vector3);
+        get upVector(): Vector3;
         /**
          * Define the current limit on the left side for an orthographic camera
          * In scene unit
@@ -111744,11 +111742,13 @@ declare module BABYLON {
          * Gets or sets a boolean indicating that pointer move events must be supported on this mesh (false by default)
          */
         enablePointerMoveEvents: boolean;
+        private _renderingGroupId;
         /**
          * Specifies the rendering group id for this mesh (0 by default)
          * @see https://doc.babylonjs.com/resources/transparency_and_how_meshes_are_rendered#rendering-groups
          */
-        renderingGroupId: number;
+        get renderingGroupId(): number;
+        set renderingGroupId(value: number);
         private _material;
         /** Gets or sets current material */
         get material(): Nullable<Material>;
@@ -113480,7 +113480,7 @@ declare module BABYLON {
          * This is part of the texture as textures usually maps to one uv set.
          */
         coordinatesIndex: number;
-        private _coordinatesMode;
+        protected _coordinatesMode: number;
         /**
         * How a texture is mapped.
         *
@@ -113499,6 +113499,7 @@ declare module BABYLON {
         */
         set coordinatesMode(value: number);
         get coordinatesMode(): number;
+        private _wrapU;
         /**
         * | Value | Type               | Description |
         * | ----- | ------------------ | ----------- |
@@ -113506,7 +113507,9 @@ declare module BABYLON {
         * | 1     | WRAP_ADDRESSMODE   |             |
         * | 2     | MIRROR_ADDRESSMODE |             |
         */
-        wrapU: number;
+        get wrapU(): number;
+        set wrapU(value: number);
+        private _wrapV;
         /**
         * | Value | Type               | Description |
         * | ----- | ------------------ | ----------- |
@@ -113514,7 +113517,8 @@ declare module BABYLON {
         * | 1     | WRAP_ADDRESSMODE   |             |
         * | 2     | MIRROR_ADDRESSMODE |             |
         */
-        wrapV: number;
+        get wrapV(): number;
+        set wrapV(value: number);
         /**
         * | Value | Type               | Description |
         * | ----- | ------------------ | ----------- |
@@ -118975,8 +118979,6 @@ declare module BABYLON {
          * The material properties need to be setup according to the type of texture in use.
          */
         environmentBRDFTexture: BaseTexture;
-        /** @hidden */
-        protected _environmentTexture: Nullable<BaseTexture>;
         /**
          * Texture used in all pbr material as the reflection texture.
          * As in the majority of the scene they are the same (exception for multi room and so on),
@@ -121012,10 +121014,15 @@ declare module BABYLON {
          * Textures to keep.
          */
         textures: BaseTexture[];
+        /** @hidden */
+        protected _environmentTexture: Nullable<BaseTexture>;
         /**
-         * Environment texture for the scene
+         * Texture used in all pbr material as the reflection texture.
+         * As in the majority of the scene they are the same (exception for multi room and so on),
+         * this is easier to reference from here than from all the materials.
          */
-        environmentTexture: Nullable<BaseTexture>;
+        get environmentTexture(): Nullable<BaseTexture>;
+        set environmentTexture(value: Nullable<BaseTexture>);
         /**
          * The list of postprocesses added to the scene
          */
@@ -122434,7 +122441,6 @@ declare module BABYLON {
          */
         get position(): Vector3;
         set position(newPosition: Vector3);
-        protected _upVector: Vector3;
         protected _upToYMatrix: Matrix;
         protected _YToUpMatrix: Matrix;
         /**
@@ -129899,7 +129905,12 @@ declare module BABYLON {
         /**
          * Ratio for the scale of the gizmo (Default: 1)
          */
-        scaleRatio: number;
+        protected _scaleRatio: number;
+        /**
+         * Ratio for the scale of the gizmo (Default: 1)
+         */
+        set scaleRatio(value: number);
+        get scaleRatio(): number;
         /**
          * If a custom mesh has been set (Default: false)
          */
@@ -129921,10 +129932,12 @@ declare module BABYLON {
          * @param mesh The mesh to replace the default mesh of the gizmo
          */
         setCustomMesh(mesh: Mesh): void;
+        protected _updateGizmoRotationToMatchAttachedMesh: boolean;
         /**
          * If set the gizmo's rotation will be updated to match the attached mesh each frame (Default: true)
          */
-        updateGizmoRotationToMatchAttachedMesh: boolean;
+        set updateGizmoRotationToMatchAttachedMesh(value: boolean);
+        get updateGizmoRotationToMatchAttachedMesh(): boolean;
         /**
          * If set the gizmo's position will be updated to match the attached mesh each frame (Default: true)
          */
@@ -130044,9 +130057,7 @@ declare module BABYLON {
          */
         private _meshAttached;
         private _nodeAttached;
-        private _updateGizmoRotationToMatchAttachedMesh;
         private _snapDistance;
-        private _scaleRatio;
         /** Fires an event when any of it's sub gizmos are dragged */
         onDragStartObservable: Observable<unknown>;
         /** Fires an event when any of it's sub gizmos are released from dragging */
@@ -130157,7 +130168,7 @@ declare module BABYLON.Debug {
         /**
          * Gets the hosting scene
          */
-        scene: Scene;
+        scene: Nullable<Scene>;
         /**
          * Gets or sets a number used to scale line length
          */
@@ -133006,9 +133017,7 @@ declare module BABYLON {
         uniformScaleGizmo: AxisScaleGizmo;
         private _meshAttached;
         private _nodeAttached;
-        private _updateGizmoRotationToMatchAttachedMesh;
         private _snapDistance;
-        private _scaleRatio;
         private _uniformScalingMesh;
         private _octahedron;
         private _sensitivity;
@@ -139856,10 +139865,6 @@ declare module BABYLON {
          * The texture URL.
          */
         url: string;
-        /**
-         * The texture coordinates mode. As this texture is stored in a cube format, please modify carefully.
-         */
-        coordinatesMode: number;
         protected _isBlocking: boolean;
         /**
          * Sets wether or not the texture is blocking during loading.
@@ -140964,8 +140969,6 @@ declare module BABYLON {
         private _height;
         /** The URL to the image. */
         url: string;
-        /** The texture coordinates mode. As this texture is stored in a cube format, please modify carefully. */
-        coordinatesMode: number;
         /**
          * Instantiates an EquiRectangularCubeTexture from the following parameters.
          * @param url The location of the image

dist/preview release/viewer/babylon.viewer.d.ts

@@ -1416,7 +1416,7 @@ declare module BabylonViewer {
             /**
                 * Babylon's scene optimizer
                 */
-            sceneOptimizer: BABYLON.SceneOptimizer;
+            sceneOptimizer?: BABYLON.SceneOptimizer;
             /**
                 * Models displayed in this viewer.
                 */

dist/preview release/viewer/babylon.viewer.module.d.ts

@@ -1550,7 +1550,7 @@ declare module 'babylonjs-viewer/managers/sceneManager' {
             /**
                 * Babylon's scene optimizer
                 */
-            sceneOptimizer: SceneOptimizer;
+            sceneOptimizer?: SceneOptimizer;
             /**
                 * Models displayed in this viewer.
                 */

gui/src/3D/materials/fluentMaterial.ts

@@ -49,12 +49,6 @@ export class FluentMaterial extends PushMaterial {
     public innerGlowColor = new Color3(1.0, 1.0, 1.0);
 
     /**
-     * Gets or sets alpha value (default is 1.0)
-     */
-    @serialize()
-    public alpha = 1.0;
-
-    /**
      * Gets or sets the albedo color (Default is Color3(0.3, 0.35, 0.4))
      */
     @serializeAsColor3()

inspector/src/inspector.ts

@@ -27,7 +27,7 @@ export class Inspector {
     private static _SceneExplorerHost: Nullable<HTMLElement>;
     private static _ActionTabsHost: Nullable<HTMLElement>;
     private static _EmbedHost: Nullable<HTMLElement>;
-    private static _NewCanvasContainer: HTMLElement;
+    private static _NewCanvasContainer: Nullable<HTMLElement>;
 
     private static _SceneExplorerWindow: Window;
     private static _ActionTabsWindow: Window;
@@ -471,6 +471,9 @@ export class Inspector {
     }
 
     private static _DestroyCanvasContainer() {
+        if (!this._NewCanvasContainer) {
+            return;
+        }
         const parentControl = this._NewCanvasContainer.parentElement!;
 
         while (this._NewCanvasContainer.childElementCount > 0) {
@@ -481,7 +484,7 @@ export class Inspector {
 
         parentControl.removeChild(this._NewCanvasContainer);
         parentControl.style.display = this._NewCanvasContainer.style.display;
-        delete this._NewCanvasContainer;
+        this._NewCanvasContainer = null;
     }
 
     private static _Cleanup() {

loaders/src/glTF/2.0/Extensions/EXT_lights_image_based.ts

@@ -45,7 +45,7 @@ export class EXT_lights_image_based implements IGLTFLoaderExtension {
 
     /** @hidden */
     public dispose() {
-        delete this._loader;
+        (this._loader as any) = null;
         delete this._lights;
     }
 

loaders/src/glTF/2.0/Extensions/EXT_mesh_gpu_instancing.ts

@@ -36,7 +36,7 @@ export class EXT_mesh_gpu_instancing implements IGLTFLoaderExtension {
 
     /** @hidden */
     public dispose() {
-        delete this._loader;
+        (this._loader as any) = null;
     }
 
     /** @hidden */

loaders/src/glTF/2.0/Extensions/EXT_texture_webp.ts

@@ -27,7 +27,7 @@ export class EXT_texture_webp implements IGLTFLoaderExtension {
 
     /** @hidden */
     public dispose() {
-        delete this._loader;
+        (this._loader as any) = null;
     }
 
     /** @hidden */

loaders/src/glTF/2.0/Extensions/ExtrasAsMetadata.ts

@@ -48,7 +48,7 @@ export class ExtrasAsMetadata implements IGLTFLoaderExtension {
 
     /** @hidden */
     public dispose(): void {
-        delete this._loader;
+        (this._loader as any) = null;
     }
 
     /** @hidden */

loaders/src/glTF/2.0/Extensions/KHR_draco_mesh_compression.ts

@@ -45,7 +45,7 @@ export class KHR_draco_mesh_compression implements IGLTFLoaderExtension {
     /** @hidden */
     public dispose(): void {
         delete this.dracoCompression;
-        delete this._loader;
+        (this._loader as any) = null;
     }
 
     /** @hidden */

loaders/src/glTF/2.0/Extensions/KHR_lights_punctual.ts

@@ -39,7 +39,7 @@ export class KHR_lights implements IGLTFLoaderExtension {
 
     /** @hidden */
     public dispose() {
-        delete this._loader;
+        (this._loader as any) = null;
         delete this._lights;
     }
 

loaders/src/glTF/2.0/Extensions/KHR_materials_clearcoat.ts

@@ -40,7 +40,7 @@ export class KHR_materials_clearcoat implements IGLTFLoaderExtension {
 
     /** @hidden */
     public dispose() {
-        delete this._loader;
+        (this._loader as any) = null;
     }
 
     /** @hidden */

loaders/src/glTF/2.0/Extensions/KHR_materials_ior.ts

@@ -44,7 +44,7 @@ export class KHR_materials_ior implements IGLTFLoaderExtension {
 
     /** @hidden */
     public dispose() {
-        delete this._loader;
+        (this._loader as any) = null;
     }
 
     /** @hidden */

loaders/src/glTF/2.0/Extensions/KHR_materials_pbrSpecularGlossiness.ts

@@ -39,7 +39,7 @@ export class KHR_materials_pbrSpecularGlossiness implements IGLTFLoaderExtension
 
     /** @hidden */
     public dispose() {
-        delete this._loader;
+        (this._loader as any) = null;
     }
 
     /** @hidden */

loaders/src/glTF/2.0/Extensions/KHR_materials_sheen.ts

@@ -41,7 +41,7 @@ export class KHR_materials_sheen implements IGLTFLoaderExtension {
 
     /** @hidden */
     public dispose() {
-        delete this._loader;
+        (this._loader as any) = null;
     }
 
     /** @hidden */

loaders/src/glTF/2.0/Extensions/KHR_materials_specular.ts

@@ -40,7 +40,7 @@ export class KHR_materials_specular implements IGLTFLoaderExtension {
 
     /** @hidden */
     public dispose() {
-        delete this._loader;
+        (this._loader as any) = null;
     }
 
     /** @hidden */

loaders/src/glTF/2.0/Extensions/KHR_materials_transmission.ts

@@ -42,7 +42,7 @@ export class KHR_materials_transmission implements IGLTFLoaderExtension {
 
     /** @hidden */
     public dispose() {
-        delete this._loader;
+        (this._loader as any) = null;
     }
 
     /** @hidden */

loaders/src/glTF/2.0/Extensions/KHR_materials_unlit.ts

@@ -38,7 +38,7 @@ export class KHR_materials_unlit implements IGLTFLoaderExtension {
 
     /** @hidden */
     public dispose() {
-        delete this._loader;
+        (this._loader as any) = null;
     }
 
     /** @hidden */

loaders/src/glTF/2.0/Extensions/KHR_materials_variants.ts

@@ -47,7 +47,7 @@ export class KHR_materials_variants implements IGLTFLoaderExtension {
 
     /** @hidden */
     public dispose() {
-        delete this._loader;
+        (this._loader as any) = null;
     }
 
     /**

loaders/src/glTF/2.0/Extensions/KHR_texture_basisu.ts

@@ -28,7 +28,7 @@ export class KHR_texture_basisu implements IGLTFLoaderExtension {
 
     /** @hidden */
     public dispose() {
-        delete this._loader;
+        (this._loader as any) = null;
     }
 
     /** @hidden */

loaders/src/glTF/2.0/Extensions/KHR_texture_transform.ts

@@ -33,7 +33,7 @@ export class KHR_texture_transform implements IGLTFLoaderExtension {
 
     /** @hidden */
     public dispose() {
-        delete this._loader;
+        (this._loader as any) = null;
     }
 
     /** @hidden */

loaders/src/glTF/2.0/Extensions/KHR_xmp.ts

@@ -34,7 +34,7 @@ export class KHR_xmp implements IGLTFLoaderExtension {
 
     /** @hidden */
     public dispose() {
-        delete this._loader;
+        (this._loader as any) = null;
     }
 
     /**

loaders/src/glTF/2.0/Extensions/MSFT_audio_emitter.ts

@@ -64,9 +64,9 @@ export class MSFT_audio_emitter implements IGLTFLoaderExtension {
 
     /** @hidden */
     public dispose() {
-        delete this._loader;
-        delete this._clips;
-        delete this._emitters;
+        (this._loader as any) = null;
+        (this._clips as any) = null;
+        (this._emitters as any) = null;
     }
 
     /** @hidden */

loaders/src/glTF/2.0/Extensions/MSFT_lod.ts

@@ -78,7 +78,7 @@ export class MSFT_lod implements IGLTFLoaderExtension {
 
     /** @hidden */
     public dispose() {
-        delete this._loader;
+        (this._loader as any) = null;
 
         this._nodeIndexLOD = null;
         this._nodeSignalLODs.length = 0;

loaders/src/glTF/2.0/Extensions/MSFT_minecraftMesh.ts

@@ -21,7 +21,7 @@ export class MSFT_minecraftMesh implements IGLTFLoaderExtension {
     }
 
     public dispose() {
-        delete this._loader;
+        (this._loader as any) = null;
     }
 
     public loadMaterialPropertiesAsync(context: string, material: IMaterial, babylonMaterial: Material): Nullable<Promise<void>> {

loaders/src/glTF/2.0/Extensions/MSFT_sRGBFactors.ts

@@ -21,7 +21,7 @@ export class MSFT_sRGBFactors implements IGLTFLoaderExtension {
     }
 
     public dispose() {
-        delete this._loader;
+        (this._loader as any) = null;
     }
 
     public loadMaterialPropertiesAsync(context: string, material: IMaterial, babylonMaterial: Material): Nullable<Promise<void>> {

loaders/src/glTF/2.0/glTFLoader.ts

@@ -216,9 +216,9 @@ export class GLTFLoader implements IGLTFLoader {
             delete this._extensions[name];
         }
 
-        delete this._gltf;
-        delete this._babylonScene;
-        delete this._rootBabylonMesh;
+        (this._gltf as any) = null;
+        (this._babylonScene as any) = null;
+        (this._rootBabylonMesh as any) = null;
 
         this._parent.dispose();
     }

nodeEditor/src/components/nodeList/nodeListComponent.tsx

@@ -223,7 +223,7 @@ export class NodeListComponent extends React.Component<INodeListComponentProps,
         }
         
         // Block types used to create the menu from
-        const allBlocks = {
+        const allBlocks: any = {
             Custom_Frames: customFrameNames,
             Animation: ["BonesBlock", "MorphTargetsBlock"],
             Color_Management: ["ReplaceColorBlock", "PosterizeBlock", "GradientBlock", "DesaturateBlock"],

package.json

@@ -104,7 +104,7 @@
         "tslib": ">=1.10.0",
         "tslint": "^6.1.2",
         "typedoc": "^0.17.7",
-        "typescript": "~3.9.5",
+        "typescript": "^4.0.2",
         "webpack": "~4.43.0",
         "webpack-bundle-analyzer": "^3.8.0",
         "webpack-cli": "^3.3.11",
@@ -113,4 +113,4 @@
         "xhr2": "^0.2.0",
         "xmlbuilder": "15.1.1"
     }
-}
+}

serializers/src/glTF/2.0/Extensions/KHR_lights_punctual.ts

@@ -40,7 +40,7 @@ export class KHR_lights_punctual implements IGLTFExporterExtensionV2 {
 
     /** @hidden */
     public dispose() {
-        delete this._lights;
+        (this._lights as any) = null;
     }
 
     /** @hidden */

src/Actions/action.ts

@@ -4,6 +4,7 @@ import { Color3, Color4 } from "../Maths/math.color";
 import { Condition } from "./condition";
 import { _TypeStore } from '../Misc/typeStore';
 import { AbstractActionManager } from './abstractActionManager';
+import { Nullable } from "../types";
 
 declare type Scene = import("../scene").Scene;
 declare type ActionManager = import("./actionManager").ActionManager;
@@ -54,7 +55,7 @@ export interface IAction {
      * Internal only - manager for action
      * @hidden
      */
-    _actionManager: AbstractActionManager;
+    _actionManager: Nullable<AbstractActionManager>;
 
     /**
      * Adds action to chain of actions, may be a DoNothingAction

src/Actions/actionManager.ts

@@ -296,7 +296,7 @@ export class ActionManager extends AbstractActionManager {
             if (ActionManager.Triggers[action.trigger] === 0) {
                 delete ActionManager.Triggers[action.trigger];
             }
-            delete action._actionManager;
+            action._actionManager = null;
             return true;
         }
         return false;

src/Cameras/arcRotateCamera.ts

@@ -76,9 +76,6 @@ export class ArcRotateCamera extends TargetCamera {
         this.setPosition(newPosition);
     }
 
-    @serializeAsVector3("upVector")
-    protected _upVector = Vector3.Up();
-
     protected _upToYMatrix: Matrix;
     protected _YToUpMatrix: Matrix;
 

src/Cameras/camera.ts

@@ -119,12 +119,20 @@ export class Camera extends Node {
         this._position = newPosition;
     }
 
+    @serializeAsVector3("upVector")
+    protected _upVector = Vector3.Up();
+
     /**
      * The vector the camera should consider as up.
      * (default is Vector3(0, 1, 0) aka Vector3.Up())
      */
-    @serializeAsVector3()
-    public upVector = Vector3.Up();
+    public set upVector(vec: Vector3) {
+        this._upVector = vec;
+    }
+
+    public get upVector() {
+        return this._upVector;
+    }
 
     /**
      * Define the current limit on the left side for an orthographic camera

src/Debug/axesViewer.ts

@@ -19,7 +19,7 @@ export class AxesViewer {
     /**
      * Gets the hosting scene
      */
-    public scene: Scene;
+    public scene: Nullable<Scene> = null;
 
     /**
      * Gets or sets a number used to scale line length
@@ -117,10 +117,10 @@ export class AxesViewer {
      * @returns a new axes viewer with instanced meshes
      */
     public createInstance(): AxesViewer {
-        const xAxis = AxisDragGizmo._CreateArrowInstance(this.scene, this._xAxis);
-        const yAxis = AxisDragGizmo._CreateArrowInstance(this.scene, this._yAxis);
-        const zAxis = AxisDragGizmo._CreateArrowInstance(this.scene, this._zAxis);
-        const axesViewer = new AxesViewer(this.scene, this.scaleLines, null, xAxis, yAxis, zAxis);
+        const xAxis = AxisDragGizmo._CreateArrowInstance(this.scene!, this._xAxis);
+        const yAxis = AxisDragGizmo._CreateArrowInstance(this.scene!, this._yAxis);
+        const zAxis = AxisDragGizmo._CreateArrowInstance(this.scene!, this._zAxis);
+        const axesViewer = new AxesViewer(this.scene!, this.scaleLines, null, xAxis, yAxis, zAxis);
         axesViewer._instanced = true;
         return axesViewer;
     }
@@ -129,20 +129,17 @@ export class AxesViewer {
     public dispose() {
         if (this._xAxis) {
             this._xAxis.dispose(false, !this._instanced);
-            delete this._xAxis;
         }
 
         if (this._yAxis) {
             this._yAxis.dispose(false, !this._instanced);
-            delete this._yAxis;
         }
 
         if (this._zAxis) {
             this._zAxis.dispose(false, !this._instanced);
-            delete this._zAxis;
         }
 
-        delete this.scene;
+        this.scene = null;
     }
 
     private static _SetRenderingGroupId(node: TransformNode, id: number) {

src/Engines/Extensions/engine.textureSelector.ts

@@ -110,7 +110,7 @@ Engine.prototype.setTextureFormatToUse = function(formatsAvailable: Array<string
     }
     // actively set format to nothing, to allow this to be called more than once
     // and possibly fail the 2nd time
-    delete this._textureFormatInUse;
-    delete this._transformTextureUrl;
+    this._textureFormatInUse = "";
+    this._transformTextureUrl = null;
     return null;
 };

src/Gizmos/gizmo.ts

@@ -21,10 +21,22 @@ export class Gizmo implements IDisposable {
     public _rootMesh: Mesh;
     private _attachedMesh: Nullable<AbstractMesh> = null;
     private _attachedNode: Nullable<Node> = null;
+
     /**
      * Ratio for the scale of the gizmo (Default: 1)
      */
-    public scaleRatio = 1;
+    protected _scaleRatio = 1;
+
+    /**
+     * Ratio for the scale of the gizmo (Default: 1)
+     */
+    public set scaleRatio(value: number) {
+        this._scaleRatio = value;
+    }
+
+    public get scaleRatio() {
+        return this._scaleRatio;
+    }
     /**
      * If a custom mesh has been set (Default: false)
      */
@@ -73,10 +85,17 @@ export class Gizmo implements IDisposable {
         this._customMeshSet = true;
     }
 
+    protected _updateGizmoRotationToMatchAttachedMesh = true;
+
     /**
      * If set the gizmo's rotation will be updated to match the attached mesh each frame (Default: true)
      */
-    public updateGizmoRotationToMatchAttachedMesh = true;
+    public set updateGizmoRotationToMatchAttachedMesh(value: boolean) {
+        this._updateGizmoRotationToMatchAttachedMesh = value;
+    }
+    public get updateGizmoRotationToMatchAttachedMesh() {
+        return this._updateGizmoRotationToMatchAttachedMesh;
+    }
     /**
      * If set the gizmo's position will be updated to match the attached mesh each frame (Default: true)
      */

src/Gizmos/positionGizmo.ts

@@ -44,9 +44,7 @@ export class PositionGizmo extends Gizmo {
      */
     private _meshAttached: Nullable<AbstractMesh> = null;
     private _nodeAttached: Nullable<Node> = null;
-    private _updateGizmoRotationToMatchAttachedMesh: boolean;
     private _snapDistance: number;
-    private _scaleRatio: number;
 
     /** Fires an event when any of it's sub gizmos are dragged */
     public onDragStartObservable = new Observable();

src/Gizmos/scaleGizmo.ts

@@ -34,9 +34,7 @@ export class ScaleGizmo extends Gizmo {
 
     private _meshAttached: Nullable<AbstractMesh> = null;
     private _nodeAttached: Nullable<Node> = null;
-    private _updateGizmoRotationToMatchAttachedMesh: boolean;
     private _snapDistance: number;
-    private _scaleRatio: number;
     private _uniformScalingMesh: Mesh;
     private _octahedron: Mesh;
     private _sensitivity: number = 1;

src/Materials/Textures/Procedurals/proceduralTexture.ts

@@ -102,7 +102,7 @@ export class ProceduralTexture extends Texture {
      * @param generateMipMaps Define if the texture should creates mip maps or not
      * @param isCube Define if the texture is a cube texture or not (this will render each faces of the cube)
      */
-    constructor(name: string, size: any, fragment: any, scene: Nullable<Scene>, fallbackTexture: Nullable<Texture> = null, generateMipMaps = true, public isCube = false) {
+    constructor(name: string, size: any, fragment: any, scene: Nullable<Scene>, fallbackTexture: Nullable<Texture> = null, generateMipMaps = true, isCube = false) {
         super(null, scene, !generateMipMaps);
 
         scene = this.getScene()!;

src/Materials/Textures/baseTexture.ts

@@ -90,7 +90,7 @@ export class BaseTexture implements IAnimatable {
     public coordinatesIndex = 0;
 
     @serialize("coordinatesMode")
-    private _coordinatesMode = Constants.TEXTURE_EXPLICIT_MODE;
+    protected _coordinatesMode = Constants.TEXTURE_EXPLICIT_MODE;
 
     /**
     * How a texture is mapped.
@@ -121,6 +121,7 @@ export class BaseTexture implements IAnimatable {
         return this._coordinatesMode;
     }
 
+    private _wrapU = Constants.TEXTURE_WRAP_ADDRESSMODE;
     /**
     * | Value | Type               | Description |
     * | ----- | ------------------ | ----------- |
@@ -129,8 +130,15 @@ export class BaseTexture implements IAnimatable {
     * | 2     | MIRROR_ADDRESSMODE |             |
     */
     @serialize()
-    public wrapU = Constants.TEXTURE_WRAP_ADDRESSMODE;
+    public get wrapU() {
+        return this._wrapU;
+    }
+
+    public set wrapU(value: number) {
+        this._wrapU = value;
+    }
 
+    private _wrapV = Constants.TEXTURE_WRAP_ADDRESSMODE;
     /**
     * | Value | Type               | Description |
     * | ----- | ------------------ | ----------- |
@@ -139,7 +147,13 @@ export class BaseTexture implements IAnimatable {
     * | 2     | MIRROR_ADDRESSMODE |             |
     */
     @serialize()
-    public wrapV = Constants.TEXTURE_WRAP_ADDRESSMODE;
+    public get wrapV() {
+        return this._wrapV;
+    }
+
+    public set wrapV(value: number) {
+        this._wrapV = value;
+    }
 
     /**
     * | Value | Type               | Description |

src/Materials/Textures/equiRectangularCubeTexture.ts

@@ -33,9 +33,6 @@ export class EquiRectangularCubeTexture extends BaseTexture {
     /** The URL to the image. */
     public url: string;
 
-    /** The texture coordinates mode. As this texture is stored in a cube format, please modify carefully. */
-    public coordinatesMode = Texture.CUBIC_MODE;
-
     /**
      * Instantiates an EquiRectangularCubeTexture from the following parameters.
      * @param url The location of the image
@@ -62,6 +59,7 @@ export class EquiRectangularCubeTexture extends BaseTexture {
             throw new Error('Image url is not set');
         }
 
+        this._coordinatesMode = Texture.CUBIC_MODE;
         this.name = url;
         this.url = url;
         this._size = size;

src/Materials/Textures/hdrCubeTexture.ts

@@ -44,11 +44,6 @@ export class HDRCubeTexture extends BaseTexture {
      */
     public url: string;
 
-    /**
-     * The texture coordinates mode. As this texture is stored in a cube format, please modify carefully.
-     */
-    public coordinatesMode = Texture.CUBIC_MODE;
-
     protected _isBlocking: boolean = true;
     /**
      * Sets wether or not the texture is blocking during loading.
@@ -124,6 +119,7 @@ export class HDRCubeTexture extends BaseTexture {
             return;
         }
 
+        this._coordinatesMode = Texture.CUBIC_MODE;
         this.name = url;
         this.url = url;
         this.hasAlpha = false;

src/Materials/Textures/renderTargetTexture.ts

@@ -113,10 +113,6 @@ export class RenderTargetTexture extends Texture {
      */
     public renderSprites = false;
     /**
-     * Override the default coordinates mode to projection for RTT as it is the most common case for rendered textures.
-     */
-    public coordinatesMode = Texture.PROJECTION_MODE;
-    /**
      * Define the camera used to render the texture.
      */
     public activeCamera: Nullable<Camera>;
@@ -230,7 +226,7 @@ export class RenderTargetTexture extends Texture {
     public _generateMipMaps: boolean;
     protected _renderingManager: RenderingManager;
     /** @hidden */
-    public _waitingRenderList: string[];
+    public _waitingRenderList?: string[];
     protected _doNotChangeAspectRatio: boolean;
     protected _currentRefreshId = -1;
     protected _refreshRate = 1;
@@ -304,13 +300,14 @@ export class RenderTargetTexture extends Texture {
      * @param format The internal format of the buffer in the RTT (RED, RG, RGB, RGBA, ALPHA...)
      * @param delayAllocation if the texture allocation should be delayed (default: false)
      */
-    constructor(name: string, size: number | { width: number, height: number, layers?: number } | { ratio: number }, scene: Nullable<Scene>, generateMipMaps?: boolean, doNotChangeAspectRatio: boolean = true, type: number = Constants.TEXTURETYPE_UNSIGNED_INT, public isCube = false, samplingMode = Texture.TRILINEAR_SAMPLINGMODE, generateDepthBuffer = true, generateStencilBuffer = false, isMulti = false, format = Constants.TEXTUREFORMAT_RGBA, delayAllocation = false) {
+    constructor(name: string, size: number | { width: number, height: number, layers?: number } | { ratio: number }, scene: Nullable<Scene>, generateMipMaps?: boolean, doNotChangeAspectRatio: boolean = true, type: number = Constants.TEXTURETYPE_UNSIGNED_INT, isCube = false, samplingMode = Texture.TRILINEAR_SAMPLINGMODE, generateDepthBuffer = true, generateStencilBuffer = false, isMulti = false, format = Constants.TEXTUREFORMAT_RGBA, delayAllocation = false) {
         super(null, scene, !generateMipMaps);
         scene = this.getScene();
         if (!scene) {
             return;
         }
 
+        this._coordinatesMode = Texture.PROJECTION_MODE;
         this.renderList = new Array<AbstractMesh>();
         this.name = name;
         this.isRenderTarget = true;
@@ -644,7 +641,7 @@ export class RenderTargetTexture extends Texture {
                 }
             }
 
-            delete this._waitingRenderList;
+            this._waitingRenderList = undefined;
         }
 
         // Is predicate defined?

src/Materials/Textures/texture.ts

@@ -346,7 +346,7 @@ export class Texture extends BaseTexture {
             if (!scene || !scene.useDelayedTextureLoading) {
                 this._texture = engine.createTexture(this.url, noMipmap, invertY, scene, samplingMode, load, onError, this._buffer, undefined, this._format, null, mimeType);
                 if (deleteBuffer) {
-                    delete this._buffer;
+                    this._buffer = null;
                 }
             } else {
                 this.delayLoadState = Constants.DELAYLOADSTATE_NOTLOADED;
@@ -408,7 +408,7 @@ export class Texture extends BaseTexture {
         if (!this._texture) {
             this._texture = scene.getEngine().createTexture(this.url, this._noMipmap, this._invertY, scene, this.samplingMode, this._delayedOnLoad, this._delayedOnError, this._buffer, null, this._format, null, this._mimeType);
             if (this._deleteBuffer) {
-                delete this._buffer;
+                this._buffer = null;
             }
         } else {
             if (this._delayedOnLoad) {

src/Materials/materialDefines.ts

@@ -130,10 +130,6 @@ export class MaterialDefines {
      * Rebuilds the material defines
      */
     public rebuild() {
-        if (this._keys) {
-            delete this._keys;
-        }
-
         this._keys = [];
 
         for (var key of Object.keys(this)) {

src/Meshes/abstractMesh.ts

@@ -351,11 +351,19 @@ export class AbstractMesh extends TransformNode implements IDisposable, ICullabl
      */
     public enablePointerMoveEvents = false;
 
+    private _renderingGroupId = 0;
+
     /**
      * Specifies the rendering group id for this mesh (0 by default)
      * @see https://doc.babylonjs.com/resources/transparency_and_how_meshes_are_rendered#rendering-groups
      */
-    public renderingGroupId = 0;
+    public get renderingGroupId() {
+        return this._renderingGroupId;
+    }
+
+    public set renderingGroupId(value: number) {
+        this._renderingGroupId = value;
+    }
     private _material: Nullable<Material> = null;
 
     /** Gets or sets current material */

src/Meshes/geometry.ts

@@ -1348,7 +1348,7 @@ export class Geometry implements IGetSetVerticesData {
         // Flat shading
         if (mesh._shouldGenerateFlatShading) {
             mesh.convertToFlatShadedMesh();
-            delete mesh._shouldGenerateFlatShading;
+            mesh._shouldGenerateFlatShading = false;
         }
 
         // Update

src/Misc/dataReader.ts

@@ -49,9 +49,6 @@ export class DataReader {
      * @returns A promise that resolves when the load is complete
      */
     public loadAsync(byteLength: number): Promise<void> {
-        delete this._dataView;
-        delete this._dataByteOffset;
-
         return this.buffer.readAsync(this.byteOffset, byteLength).then((data) => {
             this._dataView = new DataView(data.buffer, data.byteOffset, data.byteLength);
             this._dataByteOffset = 0;

src/Misc/virtualJoystick.ts

@@ -120,7 +120,7 @@ export class VirtualJoystick {
     private _deltaJoystickVector: Vector2;
     private _leftJoystick: boolean;
     private _touches: StringDictionary<{ x: number, y: number, prevX: number, prevY: number } | PointerEvent>;
-    private _joystickPosition: Vector2;
+    private _joystickPosition: Nullable<Vector2>;
     private _alwaysVisible: boolean;
     private _puckImage: HTMLImageElement;
     private _containerImage: HTMLImageElement;
@@ -448,7 +448,7 @@ export class VirtualJoystick {
     public clearPosition() {
         this.alwaysVisible = false;
 
-        delete this._joystickPosition;
+        this._joystickPosition = null;
     }
 
     /**

src/Misc/workerPool.ts

@@ -31,8 +31,8 @@ export class WorkerPool implements IDisposable {
             workerInfo.worker.terminate();
         }
 
-        delete this._workerInfos;
-        delete this._pendingActions;
+        this._workerInfos = [];
+        this._pendingActions = [];
     }
 
     /**

src/XR/motionController/webXRMotionControllerManager.ts

@@ -3,6 +3,7 @@ import { WebXRGenericTriggerMotionController } from "./webXRGenericMotionControl
 import { Scene } from "../../scene";
 import { Tools } from "../../Misc/tools";
 import { WebXRProfiledMotionController } from "./webXRProfiledMotionController";
+import { Nullable } from "../../types";
 
 /**
  * A construction function type to create a new controller based on an xrInput object
@@ -22,7 +23,7 @@ export class WebXRMotionControllerManager {
     private static _Fallbacks: { [profileId: string]: string[] } = {};
     // cache for loading
     private static _ProfileLoadingPromises: { [profileName: string]: Promise<IMotionControllerProfile> } = {};
-    private static _ProfilesList: Promise<{ [profile: string]: string }>;
+    private static _ProfilesList: Nullable<Promise<{ [profile: string]: string }>>;
 
     /**
      * The base URL of the online controller repository. Can be changed at any time.
@@ -41,7 +42,7 @@ export class WebXRMotionControllerManager {
      * Clear the cache used for profile loading and reload when requested again
      */
     public static ClearProfilesCache() {
-        delete this._ProfilesList;
+        this._ProfilesList = null;
         this._ProfileLoadingPromises = {};
     }
 

src/abstractScene.ts

@@ -195,10 +195,20 @@ export abstract class AbstractScene {
      */
     public textures = new Array<BaseTexture>();
 
+    /** @hidden */
+    protected _environmentTexture: Nullable<BaseTexture> = null;
     /**
-     * Environment texture for the scene
+     * Texture used in all pbr material as the reflection texture.
+     * As in the majority of the scene they are the same (exception for multi room and so on),
+     * this is easier to reference from here than from all the materials.
      */
-    public environmentTexture: Nullable<BaseTexture> = null;
+    public get environmentTexture(): Nullable<BaseTexture> {
+        return this._environmentTexture;
+    }
+
+    public set environmentTexture(value: Nullable<BaseTexture>) {
+        this._environmentTexture = value;
+    }
 
     /**
      * The list of postprocesses added to the scene

src/scene.ts

@@ -183,8 +183,6 @@ export class Scene extends AbstractScene implements IAnimatable, IClipPlanesHold
      */
     public environmentBRDFTexture: BaseTexture;
 
-    /** @hidden */
-    protected _environmentTexture: Nullable<BaseTexture>;
     /**
      * Texture used in all pbr material as the reflection texture.
      * As in the majority of the scene they are the same (exception for multi room and so on),