Nightly

dist/preview release/babylon.d.ts

@@ -33885,7 +33885,7 @@ declare module BABYLON {
          * @param scriptId defines the id of the script element
          * @returns a promise request object
          */
-        static LoadScriptAsync(scriptUrl: string, scriptId?: string): Promise<boolean>;
+        static LoadScriptAsync(scriptUrl: string, scriptId?: string): Promise<void>;
         /**
          * Loads a file from a blob
          * @param fileToLoad defines the blob to use
@@ -34887,6 +34887,12 @@ declare module BABYLON {
          */
         set forceWireframe(value: boolean);
         get forceWireframe(): boolean;
+        private _skipFrustumClipping;
+        /**
+         * Gets or sets a boolean indicating if we should skip the frustum clipping part of the active meshes selection
+         */
+        set skipFrustumClipping(value: boolean);
+        get skipFrustumClipping(): boolean;
         private _forcePointsCloud;
         /**
          * Gets or sets a boolean indicating if all rendering must be done in point cloud
@@ -56813,6 +56819,10 @@ declare module BABYLON {
          * Gets the specular output component
          */
         get specularOutput(): NodeMaterialConnectionPoint;
+        /**
+         * Gets the shadow output component
+         */
+        get shadow(): NodeMaterialConnectionPoint;
         autoConfigure(material: NodeMaterial): void;
         prepareDefines(mesh: AbstractMesh, nodeMaterial: NodeMaterial, defines: NodeMaterialDefines): void;
         updateUniformsAndSamples(state: NodeMaterialBuildState, nodeMaterial: NodeMaterial, defines: NodeMaterialDefines, uniformBuffers: string[]): void;

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

@@ -34881,7 +34881,7 @@ declare module "babylonjs/Misc/tools" {
          * @param scriptId defines the id of the script element
          * @returns a promise request object
          */
-        static LoadScriptAsync(scriptUrl: string, scriptId?: string): Promise<boolean>;
+        static LoadScriptAsync(scriptUrl: string, scriptId?: string): Promise<void>;
         /**
          * Loads a file from a blob
          * @param fileToLoad defines the blob to use
@@ -35951,6 +35951,12 @@ declare module "babylonjs/scene" {
          */
         set forceWireframe(value: boolean);
         get forceWireframe(): boolean;
+        private _skipFrustumClipping;
+        /**
+         * Gets or sets a boolean indicating if we should skip the frustum clipping part of the active meshes selection
+         */
+        set skipFrustumClipping(value: boolean);
+        get skipFrustumClipping(): boolean;
         private _forcePointsCloud;
         /**
          * Gets or sets a boolean indicating if all rendering must be done in point cloud
@@ -59557,6 +59563,10 @@ declare module "babylonjs/Materials/Node/Blocks/Dual/lightBlock" {
          * Gets the specular output component
          */
         get specularOutput(): NodeMaterialConnectionPoint;
+        /**
+         * Gets the shadow output component
+         */
+        get shadow(): NodeMaterialConnectionPoint;
         autoConfigure(material: NodeMaterial): void;
         prepareDefines(mesh: AbstractMesh, nodeMaterial: NodeMaterial, defines: NodeMaterialDefines): void;
         updateUniformsAndSamples(state: NodeMaterialBuildState, nodeMaterial: NodeMaterial, defines: NodeMaterialDefines, uniformBuffers: string[]): void;
@@ -104478,7 +104488,7 @@ declare module BABYLON {
          * @param scriptId defines the id of the script element
          * @returns a promise request object
          */
-        static LoadScriptAsync(scriptUrl: string, scriptId?: string): Promise<boolean>;
+        static LoadScriptAsync(scriptUrl: string, scriptId?: string): Promise<void>;
         /**
          * Loads a file from a blob
          * @param fileToLoad defines the blob to use
@@ -105480,6 +105490,12 @@ declare module BABYLON {
          */
         set forceWireframe(value: boolean);
         get forceWireframe(): boolean;
+        private _skipFrustumClipping;
+        /**
+         * Gets or sets a boolean indicating if we should skip the frustum clipping part of the active meshes selection
+         */
+        set skipFrustumClipping(value: boolean);
+        get skipFrustumClipping(): boolean;
         private _forcePointsCloud;
         /**
          * Gets or sets a boolean indicating if all rendering must be done in point cloud
@@ -127406,6 +127422,10 @@ declare module BABYLON {
          * Gets the specular output component
          */
         get specularOutput(): NodeMaterialConnectionPoint;
+        /**
+         * Gets the shadow output component
+         */
+        get shadow(): NodeMaterialConnectionPoint;
         autoConfigure(material: NodeMaterial): void;
         prepareDefines(mesh: AbstractMesh, nodeMaterial: NodeMaterial, defines: NodeMaterialDefines): void;
         updateUniformsAndSamples(state: NodeMaterialBuildState, nodeMaterial: NodeMaterial, defines: NodeMaterialDefines, uniformBuffers: string[]): void;

dist/preview release/documentation.d.ts

@@ -33885,7 +33885,7 @@ declare module BABYLON {
          * @param scriptId defines the id of the script element
          * @returns a promise request object
          */
-        static LoadScriptAsync(scriptUrl: string, scriptId?: string): Promise<boolean>;
+        static LoadScriptAsync(scriptUrl: string, scriptId?: string): Promise<void>;
         /**
          * Loads a file from a blob
          * @param fileToLoad defines the blob to use
@@ -34887,6 +34887,12 @@ declare module BABYLON {
          */
         set forceWireframe(value: boolean);
         get forceWireframe(): boolean;
+        private _skipFrustumClipping;
+        /**
+         * Gets or sets a boolean indicating if we should skip the frustum clipping part of the active meshes selection
+         */
+        set skipFrustumClipping(value: boolean);
+        get skipFrustumClipping(): boolean;
         private _forcePointsCloud;
         /**
          * Gets or sets a boolean indicating if all rendering must be done in point cloud
@@ -56813,6 +56819,10 @@ declare module BABYLON {
          * Gets the specular output component
          */
         get specularOutput(): NodeMaterialConnectionPoint;
+        /**
+         * Gets the shadow output component
+         */
+        get shadow(): NodeMaterialConnectionPoint;
         autoConfigure(material: NodeMaterial): void;
         prepareDefines(mesh: AbstractMesh, nodeMaterial: NodeMaterial, defines: NodeMaterialDefines): void;
         updateUniformsAndSamples(state: NodeMaterialBuildState, nodeMaterial: NodeMaterial, defines: NodeMaterialDefines, uniformBuffers: string[]): void;
@@ -71503,6 +71513,36 @@ declare module BABYLON.GUI {
 }
 declare module BABYLON {
     /**
+     * Configuration for glTF validation
+     */
+    export interface IGLTFValidationConfiguration {
+        /**
+         * The url of the glTF validator.
+         */
+        url: string;
+    }
+    /**
+     * glTF validation
+     */
+    export class GLTFValidation {
+        /**
+         * The configuration. Defaults to `{ url: "https://preview.babylonjs.com/gltf_validator.js" }`.
+         */
+        static Configuration: IGLTFValidationConfiguration;
+        private static _LoadScriptPromise;
+        /**
+         * Validate a glTF asset using the glTF-Validator.
+         * @param data The JSON of a glTF or the array buffer of a binary glTF
+         * @param rootUrl The root url for the glTF
+         * @param fileName The file name for the glTF
+         * @param getExternalResource The callback to get external resources for the glTF validator
+         * @returns A promise that resolves with the glTF validation results once complete
+         */
+        static ValidateAsync(data: string | ArrayBuffer, rootUrl: string, fileName: string, getExternalResource: (uri: string) => Promise<ArrayBuffer>): Promise<BABYLON.GLTF2.IGLTFValidationResults>;
+    }
+}
+declare module BABYLON {
+    /**
      * Mode that determines the coordinate system to use.
      */
     export enum GLTFLoaderCoordinateSystemMode {
@@ -71811,7 +71851,7 @@ declare module BABYLON {
          * @returns a promise that resolves when the asset is completely loaded.
          */
         whenCompleteAsync(): Promise<void>;
-        private _validateAsync;
+        private _validate;
         private _getLoader;
         private _parseJson;
         private _unpackBinaryAsync;

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

@@ -40580,9 +40580,9 @@ var ActionTabsComponent = /** @class */ (function (_super) {
             ? babylonjs_Debug_debugLayer__WEBPACK_IMPORTED_MODULE_2__["DebugLayerTab"].Properties
             : props.initialTab;
         if (_this.props.globalState) {
-            var validationResutls = _this.props.globalState.validationResults;
-            if (validationResutls) {
-                if (validationResutls.issues.numErrors || validationResutls.issues.numWarnings) {
+            var validationResults = _this.props.globalState.validationResults;
+            if (validationResults) {
+                if (validationResults.issues.numErrors || validationResults.issues.numWarnings) {
                     initialIndex = babylonjs_Debug_debugLayer__WEBPACK_IMPORTED_MODULE_2__["DebugLayerTab"].Tools;
                 }
             }
@@ -47452,6 +47452,7 @@ var GLTFComponent = /** @class */ (function (_super) {
     Object(tslib__WEBPACK_IMPORTED_MODULE_0__["__extends"])(GLTFComponent, _super);
     function GLTFComponent(props) {
         var _this = _super.call(this, props) || this;
+        _this._onValidationResultsUpdatedObserver = null;
         var extensionStates = _this.props.globalState.glTFLoaderExtensionDefaults;
         extensionStates["MSFT_lod"] = extensionStates["MSFT_lod"] || { enabled: true, maxLODsToLoad: 10 };
         extensionStates["MSFT_minecraftMesh"] = extensionStates["MSFT_minecraftMesh"] || { enabled: true };
@@ -47499,9 +47500,27 @@ var GLTFComponent = /** @class */ (function (_super) {
         }
         return "" + singularForm;
     };
+    GLTFComponent.prototype.componentDidMount = function () {
+        var _this = this;
+        if (this.props.globalState) {
+            this._onValidationResultsUpdatedObserver = this.props.globalState.onValidationResultsUpdatedObservable.add(function () {
+                _this.forceUpdate();
+            });
+        }
+    };
+    GLTFComponent.prototype.componentWillUnmount = function () {
+        if (this.props.globalState) {
+            if (this._onValidationResultsUpdatedObserver) {
+                this.props.globalState.onValidationResultsUpdatedObservable.remove(this._onValidationResultsUpdatedObserver);
+            }
+        }
+    };
     GLTFComponent.prototype.renderValidation = function () {
         var _this = this;
         var validationResults = this.props.globalState.validationResults;
+        if (!validationResults) {
+            return null;
+        }
         var issues = validationResults.issues;
         return (react__WEBPACK_IMPORTED_MODULE_1__["createElement"](_lineContainerComponent__WEBPACK_IMPORTED_MODULE_2__["LineContainerComponent"], { globalState: this.props.globalState, title: "GLTF VALIDATION", closed: !issues.numErrors && !issues.numWarnings },
             issues.numErrors !== 0 &&
@@ -47999,6 +48018,7 @@ var GlobalState = /** @class */ (function () {
         this.onInspectorClosedObservable = new babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__["Observable"]();
         this.onTabChangedObservable = new babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__["Observable"]();
         this.sceneImportDefaults = {};
+        this.validationResults = null;
         this.onValidationResultsUpdatedObservable = new babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__["Observable"]();
         this.glTFLoaderExtensionDefaults = {};
         this.glTFLoaderDefaults = { "validate": true };
@@ -48061,6 +48081,10 @@ var GlobalState = /** @class */ (function () {
                 }
             }
         });
+        if (this.validationResults) {
+            this.validationResults = null;
+            this.onValidationResultsUpdatedObservable.notifyObservers(null);
+        }
         loader.onValidatedObservable.add(function (results) {
             _this.validationResults = results;
             _this.onValidationResultsUpdatedObservable.notifyObservers(results);

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

@@ -36,8 +36,8 @@ declare module INSPECTOR {
         sceneImportDefaults: {
             [key: string]: any;
         };
-        validationResults: BABYLON.GLTF2.IGLTFValidationResults;
-        onValidationResultsUpdatedObservable: BABYLON.Observable<BABYLON.GLTF2.IGLTFValidationResults>;
+        validationResults: BABYLON.Nullable<BABYLON.GLTF2.IGLTFValidationResults>;
+        onValidationResultsUpdatedObservable: BABYLON.Observable<BABYLON.Nullable<BABYLON.GLTF2.IGLTFValidationResults>>;
         onExtensionLoadedObservable: BABYLON.Observable<BABYLON.IGLTFLoaderExtension>;
         glTFLoaderExtensionDefaults: {
             [name: string]: {
@@ -1375,10 +1375,13 @@ declare module INSPECTOR {
         globalState: GlobalState;
     }
     export class GLTFComponent extends React.Component<IGLTFComponentProps> {
+        private _onValidationResultsUpdatedObserver;
         constructor(props: IGLTFComponentProps);
         openValidationDetails(): void;
         prepareText(singularForm: string, count: number): string;
-        renderValidation(): JSX.Element;
+        componentDidMount(): void;
+        componentWillUnmount(): void;
+        renderValidation(): JSX.Element | null;
         render(): JSX.Element;
     }
 }

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

@@ -47,8 +47,8 @@ declare module "babylonjs-inspector/components/globalState" {
         sceneImportDefaults: {
             [key: string]: any;
         };
-        validationResults: IGLTFValidationResults;
-        onValidationResultsUpdatedObservable: Observable<IGLTFValidationResults>;
+        validationResults: Nullable<IGLTFValidationResults>;
+        onValidationResultsUpdatedObservable: Observable<Nullable<IGLTFValidationResults>>;
         onExtensionLoadedObservable: Observable<IGLTFLoaderExtension>;
         glTFLoaderExtensionDefaults: {
             [name: string]: {
@@ -1778,10 +1778,13 @@ declare module "babylonjs-inspector/components/actionTabs/tabs/tools/gltfCompone
         globalState: GlobalState;
     }
     export class GLTFComponent extends React.Component<IGLTFComponentProps> {
+        private _onValidationResultsUpdatedObserver;
         constructor(props: IGLTFComponentProps);
         openValidationDetails(): void;
         prepareText(singularForm: string, count: number): string;
-        renderValidation(): JSX.Element;
+        componentDidMount(): void;
+        componentWillUnmount(): void;
+        renderValidation(): JSX.Element | null;
         render(): JSX.Element;
     }
 }
@@ -2391,8 +2394,8 @@ declare module INSPECTOR {
         sceneImportDefaults: {
             [key: string]: any;
         };
-        validationResults: BABYLON.GLTF2.IGLTFValidationResults;
-        onValidationResultsUpdatedObservable: BABYLON.Observable<BABYLON.GLTF2.IGLTFValidationResults>;
+        validationResults: BABYLON.Nullable<BABYLON.GLTF2.IGLTFValidationResults>;
+        onValidationResultsUpdatedObservable: BABYLON.Observable<BABYLON.Nullable<BABYLON.GLTF2.IGLTFValidationResults>>;
         onExtensionLoadedObservable: BABYLON.Observable<BABYLON.IGLTFLoaderExtension>;
         glTFLoaderExtensionDefaults: {
             [name: string]: {
@@ -3730,10 +3733,13 @@ declare module INSPECTOR {
         globalState: GlobalState;
     }
     export class GLTFComponent extends React.Component<IGLTFComponentProps> {
+        private _onValidationResultsUpdatedObserver;
         constructor(props: IGLTFComponentProps);
         openValidationDetails(): void;
         prepareText(singularForm: string, count: number): string;
-        renderValidation(): JSX.Element;
+        componentDidMount(): void;
+        componentWillUnmount(): void;
+        renderValidation(): JSX.Element | null;
         render(): JSX.Element;
     }
 }

dist/preview release/loaders/babylon.glTF1FileLoader.js

@@ -7,7 +7,7 @@
 		exports["babylonjs-loaders"] = factory(require("babylonjs"));
 	else
 		root["LOADERS"] = factory(root["BABYLON"]);
-})((typeof self !== "undefined" ? self : typeof global !== "undefined" ? global : this), function(__WEBPACK_EXTERNAL_MODULE_babylonjs_Misc_observable__) {
+})((typeof self !== "undefined" ? self : typeof global !== "undefined" ? global : this), function(__WEBPACK_EXTERNAL_MODULE_babylonjs_Misc_tools__) {
 return /******/ (function(modules) { // webpackBootstrap
 /******/ 	// The module cache
 /******/ 	var installedModules = {};
@@ -448,7 +448,7 @@ __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "GLTFLoader", function() { return GLTFLoader; });
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "GLTFLoaderExtension", function() { return GLTFLoaderExtension; });
 /* harmony import */ var _glTFLoaderInterfaces__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./glTFLoaderInterfaces */ "./glTF/1.0/glTFLoaderInterfaces.ts");
-/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_1___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_1__);
 /* harmony import */ var _glTFLoaderUtils__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! ./glTFLoaderUtils */ "./glTF/1.0/glTFLoaderUtils.ts");
 /* harmony import */ var _glTFFileLoader__WEBPACK_IMPORTED_MODULE_3__ = __webpack_require__(/*! ../glTFFileLoader */ "./glTF/glTFFileLoader.ts");
@@ -2255,7 +2255,7 @@ var EBlendingFunction;
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "GLTFUtils", function() { return GLTFUtils; });
 /* harmony import */ var _glTFLoaderInterfaces__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./glTFLoaderInterfaces */ "./glTF/1.0/glTFLoaderInterfaces.ts");
-/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_1___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_1__);
 
 
@@ -2504,7 +2504,7 @@ __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "GLTFMaterialsCommonExtension", function() { return GLTFMaterialsCommonExtension; });
 /* harmony import */ var tslib__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! tslib */ "../../node_modules/tslib/tslib.es6.js");
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./glTFLoader */ "./glTF/1.0/glTFLoader.ts");
-/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_2___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_2__);
 
 
@@ -2700,8 +2700,10 @@ __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "GLTFLoaderAnimationStartMode", function() { return GLTFLoaderAnimationStartMode; });
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "GLTFLoaderState", function() { return GLTFLoaderState; });
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "GLTFFileLoader", function() { return GLTFFileLoader; });
-/* harmony import */ var babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Misc/observable */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Misc/observable */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__);
+/* harmony import */ var _glTFValidation__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./glTFValidation */ "./glTF/glTFValidation.ts");
+
 
 
 
@@ -3121,7 +3123,7 @@ var GLTFFileLoader = /** @class */ (function () {
             }, onProgress, true, true, onError);
         }
         return scene._requestFile(url, function (data, response) {
-            _this._validateAsync(scene, data, babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__["Tools"].GetFolderPath(url), babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__["Tools"].GetFilename(url));
+            _this._validate(scene, data, babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__["Tools"].GetFolderPath(url), babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__["Tools"].GetFilename(url));
             onSuccess({ json: _this._parseJson(data) }, response);
         }, onProgress, true, false, onError);
     };
@@ -3129,7 +3131,7 @@ var GLTFFileLoader = /** @class */ (function () {
     GLTFFileLoader.prototype.readFile = function (scene, file, onSuccess, onProgress, useArrayBuffer, onError) {
         var _this = this;
         return scene._readFile(file, function (data) {
-            _this._validateAsync(scene, data, "file:", file.name);
+            _this._validate(scene, data, "file:", file.name);
             if (useArrayBuffer) {
                 var arrayBuffer_1 = data;
                 _this._unpackBinaryAsync(new babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__["DataReader"]({
@@ -3200,7 +3202,7 @@ var GLTFFileLoader = /** @class */ (function () {
     };
     /** @hidden */
     GLTFFileLoader.prototype.directLoad = function (scene, data) {
-        this._validateAsync(scene, data);
+        this._validate(scene, data);
         return { json: this._parseJson(data) };
     };
     /** @hidden */
@@ -3232,33 +3234,23 @@ var GLTFFileLoader = /** @class */ (function () {
             });
         });
     };
-    GLTFFileLoader.prototype._validateAsync = function (scene, data, rootUrl, fileName) {
+    GLTFFileLoader.prototype._validate = function (scene, data, rootUrl, fileName) {
         var _this = this;
         if (rootUrl === void 0) { rootUrl = ""; }
-        if (!this.validate || typeof GLTFValidator === "undefined") {
-            return Promise.resolve();
+        if (fileName === void 0) { fileName = ""; }
+        if (!this.validate) {
+            return;
         }
         this._startPerformanceCounter("Validate JSON");
-        var options = {
-            externalResourceFunction: function (uri) {
-                return _this.preprocessUrlAsync(rootUrl + uri)
-                    .then(function (url) { return scene._loadFileAsync(url, undefined, true, true); })
-                    .then(function (data) { return new Uint8Array(data); });
-            }
-        };
-        if (fileName) {
-            options.uri = (rootUrl === "file:" ? fileName : rootUrl + fileName);
-        }
-        var promise = (data instanceof ArrayBuffer)
-            ? GLTFValidator.validateBytes(new Uint8Array(data), options)
-            : GLTFValidator.validateString(data, options);
-        return promise.then(function (result) {
+        _glTFValidation__WEBPACK_IMPORTED_MODULE_1__["GLTFValidation"].ValidateAsync(data, rootUrl, fileName, function (uri) {
+            return _this.preprocessUrlAsync(rootUrl + uri).then(function (url) { return scene._loadFileAsync(url, undefined, true, true); });
+        }).then(function (result) {
             _this._endPerformanceCounter("Validate JSON");
             _this.onValidatedObservable.notifyObservers(result);
             _this.onValidatedObservable.clear();
         }, function (reason) {
             _this._endPerformanceCounter("Validate JSON");
-            babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__["Tools"].Warn("Failed to validate: " + reason);
+            babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__["Tools"].Warn("Failed to validate: " + reason.message);
             _this.onValidatedObservable.clear();
         });
     };
@@ -3489,16 +3481,154 @@ if (babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__["SceneLoader"]) {
 
 /***/ }),
 
+/***/ "./glTF/glTFValidation.ts":
+/*!********************************!*\
+  !*** ./glTF/glTFValidation.ts ***!
+  \********************************/
+/*! exports provided: GLTFValidation */
+/***/ (function(module, __webpack_exports__, __webpack_require__) {
+
+"use strict";
+__webpack_require__.r(__webpack_exports__);
+/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "GLTFValidation", function() { return GLTFValidation; });
+/* harmony import */ var babylonjs_Misc_tools__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Misc/tools */ "babylonjs/Misc/tools");
+/* harmony import */ var babylonjs_Misc_tools__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Misc_tools__WEBPACK_IMPORTED_MODULE_0__);
+
+function validateAsync(data, rootUrl, fileName, getExternalResource) {
+    var options = {
+        externalResourceFunction: function (uri) { return getExternalResource(uri).then(function (value) { return new Uint8Array(value); }); }
+    };
+    if (fileName) {
+        options.uri = (rootUrl === "file:" ? fileName : rootUrl + fileName);
+    }
+    return (data instanceof ArrayBuffer)
+        ? GLTFValidator.validateBytes(new Uint8Array(data), options)
+        : GLTFValidator.validateString(data, options);
+}
+/**
+ * The worker function that gets converted to a blob url to pass into a worker.
+ */
+function workerFunc() {
+    var pendingExternalResources = [];
+    onmessage = function (message) {
+        var data = message.data;
+        switch (data.id) {
+            case "init": {
+                importScripts(data.url);
+                break;
+            }
+            case "validate": {
+                validateAsync(data.data, data.rootUrl, data.fileName, function (uri) { return new Promise(function (resolve, reject) {
+                    var index = pendingExternalResources.length;
+                    pendingExternalResources.push({ resolve: resolve, reject: reject });
+                    postMessage({ id: "getExternalResource", index: index, uri: uri });
+                }); }).then(function (value) {
+                    postMessage({ id: "validate.resolve", value: value });
+                }, function (reason) {
+                    postMessage({ id: "validate.reject", reason: reason });
+                });
+                break;
+            }
+            case "getExternalResource.resolve": {
+                pendingExternalResources[data.index].resolve(data.value);
+                break;
+            }
+            case "getExternalResource.reject": {
+                pendingExternalResources[data.index].reject(data.reason);
+                break;
+            }
+        }
+    };
+}
+/**
+ * glTF validation
+ */
+var GLTFValidation = /** @class */ (function () {
+    function GLTFValidation() {
+    }
+    /**
+     * Validate a glTF asset using the glTF-Validator.
+     * @param data The JSON of a glTF or the array buffer of a binary glTF
+     * @param rootUrl The root url for the glTF
+     * @param fileName The file name for the glTF
+     * @param getExternalResource The callback to get external resources for the glTF validator
+     * @returns A promise that resolves with the glTF validation results once complete
+     */
+    GLTFValidation.ValidateAsync = function (data, rootUrl, fileName, getExternalResource) {
+        var _this = this;
+        if (typeof Worker === "function") {
+            return new Promise(function (resolve, reject) {
+                var workerContent = validateAsync + "(" + workerFunc + ")()";
+                var workerBlobUrl = URL.createObjectURL(new Blob([workerContent], { type: "application/javascript" }));
+                var worker = new Worker(workerBlobUrl);
+                var onError = function (error) {
+                    worker.removeEventListener("error", onError);
+                    worker.removeEventListener("message", onMessage);
+                    reject(error);
+                };
+                var onMessage = function (message) {
+                    var data = message.data;
+                    switch (data.id) {
+                        case "getExternalResource": {
+                            getExternalResource(data.uri).then(function (value) {
+                                worker.postMessage({ id: "getExternalResource.resolve", index: data.index, value: value }, [value]);
+                            }, function (reason) {
+                                worker.postMessage({ id: "getExternalResource.reject", index: data.index, reason: reason });
+                            });
+                            break;
+                        }
+                        case "validate.resolve": {
+                            worker.removeEventListener("error", onError);
+                            worker.removeEventListener("message", onMessage);
+                            resolve(data.value);
+                            break;
+                        }
+                        case "validate.reject": {
+                            worker.removeEventListener("error", onError);
+                            worker.removeEventListener("message", onMessage);
+                            reject(data.reason);
+                        }
+                    }
+                };
+                worker.addEventListener("error", onError);
+                worker.addEventListener("message", onMessage);
+                worker.postMessage({ id: "init", url: babylonjs_Misc_tools__WEBPACK_IMPORTED_MODULE_0__["Tools"].GetAbsoluteUrl(_this.Configuration.url) });
+                worker.postMessage({ id: "validate", data: data, rootUrl: rootUrl, fileName: fileName });
+            });
+        }
+        else {
+            if (!this._LoadScriptPromise) {
+                this._LoadScriptPromise = babylonjs_Misc_tools__WEBPACK_IMPORTED_MODULE_0__["Tools"].LoadScriptAsync(this.Configuration.url);
+            }
+            return this._LoadScriptPromise.then(function () {
+                return validateAsync(data, rootUrl, fileName, getExternalResource);
+            });
+        }
+    };
+    /**
+     * The configuration. Defaults to `{ url: "https://preview.babylonjs.com/gltf_validator.js" }`.
+     */
+    GLTFValidation.Configuration = {
+        url: "https://preview.babylonjs.com/gltf_validator.js"
+    };
+    return GLTFValidation;
+}());
+
+
+
+/***/ }),
+
 /***/ "./legacy/legacy-glTF.ts":
 /*!*******************************!*\
   !*** ./legacy/legacy-glTF.ts ***!
   \*******************************/
-/*! exports provided: GLTFLoaderCoordinateSystemMode, GLTFLoaderAnimationStartMode, GLTFLoaderState, GLTFFileLoader */
+/*! exports provided: GLTFLoaderCoordinateSystemMode, GLTFLoaderAnimationStartMode, GLTFLoaderState, GLTFFileLoader, GLTFValidation */
 /***/ (function(module, __webpack_exports__, __webpack_require__) {
 
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* WEBPACK VAR INJECTION */(function(global) {/* harmony import */ var _glTF_glTFFileLoader__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ../glTF/glTFFileLoader */ "./glTF/glTFFileLoader.ts");
+/* harmony import */ var _glTF_glTFValidation__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTF/glTFValidation */ "./glTF/glTFValidation.ts");
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTFLoaderCoordinateSystemMode", function() { return _glTF_glTFFileLoader__WEBPACK_IMPORTED_MODULE_0__["GLTFLoaderCoordinateSystemMode"]; });
 
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTFLoaderAnimationStartMode", function() { return _glTF_glTFFileLoader__WEBPACK_IMPORTED_MODULE_0__["GLTFLoaderAnimationStartMode"]; });
@@ -3507,6 +3637,9 @@ __webpack_require__.r(__webpack_exports__);
 
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTFFileLoader", function() { return _glTF_glTFFileLoader__WEBPACK_IMPORTED_MODULE_0__["GLTFFileLoader"]; });
 
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTFValidation", function() { return _glTF_glTFValidation__WEBPACK_IMPORTED_MODULE_1__["GLTFValidation"]; });
+
+
 
 /**
  * This is the entry point for the UMD module.
@@ -3518,8 +3651,12 @@ if (typeof globalObject !== "undefined") {
     for (var key in _glTF_glTFFileLoader__WEBPACK_IMPORTED_MODULE_0__) {
         globalObject.BABYLON[key] = _glTF_glTFFileLoader__WEBPACK_IMPORTED_MODULE_0__[key];
     }
+    for (var key in _glTF_glTFValidation__WEBPACK_IMPORTED_MODULE_1__) {
+        globalObject.BABYLON[key] = _glTF_glTFValidation__WEBPACK_IMPORTED_MODULE_1__[key];
+    }
 }
 
+
 
 /* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../../../node_modules/webpack/buildin/global.js */ "../../node_modules/webpack/buildin/global.js")))
 
@@ -3559,7 +3696,7 @@ if (typeof globalObject !== "undefined") {
 /*!******************************************!*\
   !*** ./legacy/legacy-glTF1FileLoader.ts ***!
   \******************************************/
-/*! exports provided: GLTF1, GLTFLoaderCoordinateSystemMode, GLTFLoaderAnimationStartMode, GLTFLoaderState, GLTFFileLoader */
+/*! exports provided: GLTF1, GLTFLoaderCoordinateSystemMode, GLTFLoaderAnimationStartMode, GLTFLoaderState, GLTFFileLoader, GLTFValidation */
 /***/ (function(module, __webpack_exports__, __webpack_require__) {
 
 "use strict";
@@ -3573,6 +3710,8 @@ __webpack_require__.r(__webpack_exports__);
 
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTFFileLoader", function() { return _legacy_glTF__WEBPACK_IMPORTED_MODULE_0__["GLTFFileLoader"]; });
 
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTFValidation", function() { return _legacy_glTF__WEBPACK_IMPORTED_MODULE_0__["GLTFValidation"]; });
+
 /* harmony import */ var _legacy_glTF1__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./legacy-glTF1 */ "./legacy/legacy-glTF1.ts");
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTF1", function() { return _legacy_glTF1__WEBPACK_IMPORTED_MODULE_1__["GLTF1"]; });
 
@@ -3582,14 +3721,14 @@ __webpack_require__.r(__webpack_exports__);
 
 /***/ }),
 
-/***/ "babylonjs/Misc/observable":
+/***/ "babylonjs/Misc/tools":
 /*!****************************************************************************************************!*\
   !*** external {"root":"BABYLON","commonjs":"babylonjs","commonjs2":"babylonjs","amd":"babylonjs"} ***!
   \****************************************************************************************************/
 /*! no static exports found */
 /***/ (function(module, exports) {
 
-module.exports = __WEBPACK_EXTERNAL_MODULE_babylonjs_Misc_observable__;
+module.exports = __WEBPACK_EXTERNAL_MODULE_babylonjs_Misc_tools__;
 
 /***/ })
 

dist/preview release/loaders/babylon.glTF2FileLoader.js

@@ -7,7 +7,7 @@
 		exports["babylonjs-loaders"] = factory(require("babylonjs"));
 	else
 		root["LOADERS"] = factory(root["BABYLON"]);
-})((typeof self !== "undefined" ? self : typeof global !== "undefined" ? global : this), function(__WEBPACK_EXTERNAL_MODULE_babylonjs_Misc_observable__) {
+})((typeof self !== "undefined" ? self : typeof global !== "undefined" ? global : this), function(__WEBPACK_EXTERNAL_MODULE_babylonjs_Misc_tools__) {
 return /******/ (function(modules) { // webpackBootstrap
 /******/ 	// The module cache
 /******/ 	var installedModules = {};
@@ -137,7 +137,7 @@ module.exports = g;
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "EXT_lights_image_based", function() { return EXT_lights_image_based; });
-/* harmony import */ var babylonjs_Maths_math_scalar__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math.scalar */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Maths_math_scalar__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math.scalar */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Maths_math_scalar__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Maths_math_scalar__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -330,7 +330,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_0__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "KHR_draco_mesh_compression", function() { return KHR_draco_mesh_compression; });
-/* harmony import */ var babylonjs_Meshes_Compression_dracoCompression__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Meshes/Compression/dracoCompression */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Meshes_Compression_dracoCompression__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Meshes/Compression/dracoCompression */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Meshes_Compression_dracoCompression__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Meshes_Compression_dracoCompression__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -424,7 +424,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "KHR_lights", function() { return KHR_lights; });
-/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -522,7 +522,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_clearcoat", function() { return KHR_materials_clearcoat; });
-/* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/PBR/pbrMaterial */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/PBR/pbrMaterial */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -622,7 +622,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_pbrSpecularGlossiness", function() { return KHR_materials_pbrSpecularGlossiness; });
-/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -711,7 +711,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_sheen", function() { return KHR_materials_sheen; });
-/* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/PBR/pbrMaterial */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/PBR/pbrMaterial */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -792,7 +792,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_specular", function() { return KHR_materials_specular; });
-/* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/PBR/pbrMaterial */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/PBR/pbrMaterial */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -862,7 +862,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_unlit", function() { return KHR_materials_unlit; });
-/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -980,7 +980,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_0__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "KHR_texture_transform", function() { return KHR_texture_transform; });
-/* harmony import */ var babylonjs_Materials_Textures_texture__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/Textures/texture */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Materials_Textures_texture__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/Textures/texture */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Materials_Textures_texture__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Materials_Textures_texture__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -1050,7 +1050,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "MSFT_audio_emitter", function() { return MSFT_audio_emitter; });
-/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -1284,7 +1284,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "MSFT_lod", function() { return MSFT_lod; });
-/* harmony import */ var babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Misc/observable */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Misc/observable */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -1607,7 +1607,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "MSFT_minecraftMesh", function() { return MSFT_minecraftMesh; });
-/* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/PBR/pbrMaterial */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/PBR/pbrMaterial */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -1660,7 +1660,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "MSFT_sRGBFactors", function() { return MSFT_sRGBFactors; });
-/* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/PBR/pbrMaterial */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/PBR/pbrMaterial */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -1787,7 +1787,7 @@ __webpack_require__.r(__webpack_exports__);
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "ArrayItem", function() { return ArrayItem; });
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "GLTFLoader", function() { return GLTFLoader; });
-/* harmony import */ var babylonjs_Misc_deferred__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Misc/deferred */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Misc_deferred__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Misc/deferred */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Misc_deferred__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Misc_deferred__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFFileLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFFileLoader */ "./glTF/glTFFileLoader.ts");
 
@@ -3950,8 +3950,10 @@ __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "GLTFLoaderAnimationStartMode", function() { return GLTFLoaderAnimationStartMode; });
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "GLTFLoaderState", function() { return GLTFLoaderState; });
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "GLTFFileLoader", function() { return GLTFFileLoader; });
-/* harmony import */ var babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Misc/observable */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Misc/observable */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__);
+/* harmony import */ var _glTFValidation__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./glTFValidation */ "./glTF/glTFValidation.ts");
+
 
 
 
@@ -4371,7 +4373,7 @@ var GLTFFileLoader = /** @class */ (function () {
             }, onProgress, true, true, onError);
         }
         return scene._requestFile(url, function (data, response) {
-            _this._validateAsync(scene, data, babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__["Tools"].GetFolderPath(url), babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__["Tools"].GetFilename(url));
+            _this._validate(scene, data, babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__["Tools"].GetFolderPath(url), babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__["Tools"].GetFilename(url));
             onSuccess({ json: _this._parseJson(data) }, response);
         }, onProgress, true, false, onError);
     };
@@ -4379,7 +4381,7 @@ var GLTFFileLoader = /** @class */ (function () {
     GLTFFileLoader.prototype.readFile = function (scene, file, onSuccess, onProgress, useArrayBuffer, onError) {
         var _this = this;
         return scene._readFile(file, function (data) {
-            _this._validateAsync(scene, data, "file:", file.name);
+            _this._validate(scene, data, "file:", file.name);
             if (useArrayBuffer) {
                 var arrayBuffer_1 = data;
                 _this._unpackBinaryAsync(new babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__["DataReader"]({
@@ -4450,7 +4452,7 @@ var GLTFFileLoader = /** @class */ (function () {
     };
     /** @hidden */
     GLTFFileLoader.prototype.directLoad = function (scene, data) {
-        this._validateAsync(scene, data);
+        this._validate(scene, data);
         return { json: this._parseJson(data) };
     };
     /** @hidden */
@@ -4482,33 +4484,23 @@ var GLTFFileLoader = /** @class */ (function () {
             });
         });
     };
-    GLTFFileLoader.prototype._validateAsync = function (scene, data, rootUrl, fileName) {
+    GLTFFileLoader.prototype._validate = function (scene, data, rootUrl, fileName) {
         var _this = this;
         if (rootUrl === void 0) { rootUrl = ""; }
-        if (!this.validate || typeof GLTFValidator === "undefined") {
-            return Promise.resolve();
+        if (fileName === void 0) { fileName = ""; }
+        if (!this.validate) {
+            return;
         }
         this._startPerformanceCounter("Validate JSON");
-        var options = {
-            externalResourceFunction: function (uri) {
-                return _this.preprocessUrlAsync(rootUrl + uri)
-                    .then(function (url) { return scene._loadFileAsync(url, undefined, true, true); })
-                    .then(function (data) { return new Uint8Array(data); });
-            }
-        };
-        if (fileName) {
-            options.uri = (rootUrl === "file:" ? fileName : rootUrl + fileName);
-        }
-        var promise = (data instanceof ArrayBuffer)
-            ? GLTFValidator.validateBytes(new Uint8Array(data), options)
-            : GLTFValidator.validateString(data, options);
-        return promise.then(function (result) {
+        _glTFValidation__WEBPACK_IMPORTED_MODULE_1__["GLTFValidation"].ValidateAsync(data, rootUrl, fileName, function (uri) {
+            return _this.preprocessUrlAsync(rootUrl + uri).then(function (url) { return scene._loadFileAsync(url, undefined, true, true); });
+        }).then(function (result) {
             _this._endPerformanceCounter("Validate JSON");
             _this.onValidatedObservable.notifyObservers(result);
             _this.onValidatedObservable.clear();
         }, function (reason) {
             _this._endPerformanceCounter("Validate JSON");
-            babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__["Tools"].Warn("Failed to validate: " + reason);
+            babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__["Tools"].Warn("Failed to validate: " + reason.message);
             _this.onValidatedObservable.clear();
         });
     };
@@ -4739,16 +4731,154 @@ if (babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__["SceneLoader"]) {
 
 /***/ }),
 
+/***/ "./glTF/glTFValidation.ts":
+/*!********************************!*\
+  !*** ./glTF/glTFValidation.ts ***!
+  \********************************/
+/*! exports provided: GLTFValidation */
+/***/ (function(module, __webpack_exports__, __webpack_require__) {
+
+"use strict";
+__webpack_require__.r(__webpack_exports__);
+/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "GLTFValidation", function() { return GLTFValidation; });
+/* harmony import */ var babylonjs_Misc_tools__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Misc/tools */ "babylonjs/Misc/tools");
+/* harmony import */ var babylonjs_Misc_tools__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Misc_tools__WEBPACK_IMPORTED_MODULE_0__);
+
+function validateAsync(data, rootUrl, fileName, getExternalResource) {
+    var options = {
+        externalResourceFunction: function (uri) { return getExternalResource(uri).then(function (value) { return new Uint8Array(value); }); }
+    };
+    if (fileName) {
+        options.uri = (rootUrl === "file:" ? fileName : rootUrl + fileName);
+    }
+    return (data instanceof ArrayBuffer)
+        ? GLTFValidator.validateBytes(new Uint8Array(data), options)
+        : GLTFValidator.validateString(data, options);
+}
+/**
+ * The worker function that gets converted to a blob url to pass into a worker.
+ */
+function workerFunc() {
+    var pendingExternalResources = [];
+    onmessage = function (message) {
+        var data = message.data;
+        switch (data.id) {
+            case "init": {
+                importScripts(data.url);
+                break;
+            }
+            case "validate": {
+                validateAsync(data.data, data.rootUrl, data.fileName, function (uri) { return new Promise(function (resolve, reject) {
+                    var index = pendingExternalResources.length;
+                    pendingExternalResources.push({ resolve: resolve, reject: reject });
+                    postMessage({ id: "getExternalResource", index: index, uri: uri });
+                }); }).then(function (value) {
+                    postMessage({ id: "validate.resolve", value: value });
+                }, function (reason) {
+                    postMessage({ id: "validate.reject", reason: reason });
+                });
+                break;
+            }
+            case "getExternalResource.resolve": {
+                pendingExternalResources[data.index].resolve(data.value);
+                break;
+            }
+            case "getExternalResource.reject": {
+                pendingExternalResources[data.index].reject(data.reason);
+                break;
+            }
+        }
+    };
+}
+/**
+ * glTF validation
+ */
+var GLTFValidation = /** @class */ (function () {
+    function GLTFValidation() {
+    }
+    /**
+     * Validate a glTF asset using the glTF-Validator.
+     * @param data The JSON of a glTF or the array buffer of a binary glTF
+     * @param rootUrl The root url for the glTF
+     * @param fileName The file name for the glTF
+     * @param getExternalResource The callback to get external resources for the glTF validator
+     * @returns A promise that resolves with the glTF validation results once complete
+     */
+    GLTFValidation.ValidateAsync = function (data, rootUrl, fileName, getExternalResource) {
+        var _this = this;
+        if (typeof Worker === "function") {
+            return new Promise(function (resolve, reject) {
+                var workerContent = validateAsync + "(" + workerFunc + ")()";
+                var workerBlobUrl = URL.createObjectURL(new Blob([workerContent], { type: "application/javascript" }));
+                var worker = new Worker(workerBlobUrl);
+                var onError = function (error) {
+                    worker.removeEventListener("error", onError);
+                    worker.removeEventListener("message", onMessage);
+                    reject(error);
+                };
+                var onMessage = function (message) {
+                    var data = message.data;
+                    switch (data.id) {
+                        case "getExternalResource": {
+                            getExternalResource(data.uri).then(function (value) {
+                                worker.postMessage({ id: "getExternalResource.resolve", index: data.index, value: value }, [value]);
+                            }, function (reason) {
+                                worker.postMessage({ id: "getExternalResource.reject", index: data.index, reason: reason });
+                            });
+                            break;
+                        }
+                        case "validate.resolve": {
+                            worker.removeEventListener("error", onError);
+                            worker.removeEventListener("message", onMessage);
+                            resolve(data.value);
+                            break;
+                        }
+                        case "validate.reject": {
+                            worker.removeEventListener("error", onError);
+                            worker.removeEventListener("message", onMessage);
+                            reject(data.reason);
+                        }
+                    }
+                };
+                worker.addEventListener("error", onError);
+                worker.addEventListener("message", onMessage);
+                worker.postMessage({ id: "init", url: babylonjs_Misc_tools__WEBPACK_IMPORTED_MODULE_0__["Tools"].GetAbsoluteUrl(_this.Configuration.url) });
+                worker.postMessage({ id: "validate", data: data, rootUrl: rootUrl, fileName: fileName });
+            });
+        }
+        else {
+            if (!this._LoadScriptPromise) {
+                this._LoadScriptPromise = babylonjs_Misc_tools__WEBPACK_IMPORTED_MODULE_0__["Tools"].LoadScriptAsync(this.Configuration.url);
+            }
+            return this._LoadScriptPromise.then(function () {
+                return validateAsync(data, rootUrl, fileName, getExternalResource);
+            });
+        }
+    };
+    /**
+     * The configuration. Defaults to `{ url: "https://preview.babylonjs.com/gltf_validator.js" }`.
+     */
+    GLTFValidation.Configuration = {
+        url: "https://preview.babylonjs.com/gltf_validator.js"
+    };
+    return GLTFValidation;
+}());
+
+
+
+/***/ }),
+
 /***/ "./legacy/legacy-glTF.ts":
 /*!*******************************!*\
   !*** ./legacy/legacy-glTF.ts ***!
   \*******************************/
-/*! exports provided: GLTFLoaderCoordinateSystemMode, GLTFLoaderAnimationStartMode, GLTFLoaderState, GLTFFileLoader */
+/*! exports provided: GLTFLoaderCoordinateSystemMode, GLTFLoaderAnimationStartMode, GLTFLoaderState, GLTFFileLoader, GLTFValidation */
 /***/ (function(module, __webpack_exports__, __webpack_require__) {
 
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* WEBPACK VAR INJECTION */(function(global) {/* harmony import */ var _glTF_glTFFileLoader__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ../glTF/glTFFileLoader */ "./glTF/glTFFileLoader.ts");
+/* harmony import */ var _glTF_glTFValidation__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTF/glTFValidation */ "./glTF/glTFValidation.ts");
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTFLoaderCoordinateSystemMode", function() { return _glTF_glTFFileLoader__WEBPACK_IMPORTED_MODULE_0__["GLTFLoaderCoordinateSystemMode"]; });
 
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTFLoaderAnimationStartMode", function() { return _glTF_glTFFileLoader__WEBPACK_IMPORTED_MODULE_0__["GLTFLoaderAnimationStartMode"]; });
@@ -4757,6 +4887,9 @@ __webpack_require__.r(__webpack_exports__);
 
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTFFileLoader", function() { return _glTF_glTFFileLoader__WEBPACK_IMPORTED_MODULE_0__["GLTFFileLoader"]; });
 
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTFValidation", function() { return _glTF_glTFValidation__WEBPACK_IMPORTED_MODULE_1__["GLTFValidation"]; });
+
+
 
 /**
  * This is the entry point for the UMD module.
@@ -4768,8 +4901,12 @@ if (typeof globalObject !== "undefined") {
     for (var key in _glTF_glTFFileLoader__WEBPACK_IMPORTED_MODULE_0__) {
         globalObject.BABYLON[key] = _glTF_glTFFileLoader__WEBPACK_IMPORTED_MODULE_0__[key];
     }
+    for (var key in _glTF_glTFValidation__WEBPACK_IMPORTED_MODULE_1__) {
+        globalObject.BABYLON[key] = _glTF_glTFValidation__WEBPACK_IMPORTED_MODULE_1__[key];
+    }
 }
 
+
 
 /* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../../../node_modules/webpack/buildin/global.js */ "../../node_modules/webpack/buildin/global.js")))
 
@@ -4830,7 +4967,7 @@ if (typeof globalObject !== "undefined") {
 /*!******************************************!*\
   !*** ./legacy/legacy-glTF2FileLoader.ts ***!
   \******************************************/
-/*! exports provided: GLTF2, GLTFLoaderCoordinateSystemMode, GLTFLoaderAnimationStartMode, GLTFLoaderState, GLTFFileLoader */
+/*! exports provided: GLTF2, GLTFLoaderCoordinateSystemMode, GLTFLoaderAnimationStartMode, GLTFLoaderState, GLTFFileLoader, GLTFValidation */
 /***/ (function(module, __webpack_exports__, __webpack_require__) {
 
 "use strict";
@@ -4844,6 +4981,8 @@ __webpack_require__.r(__webpack_exports__);
 
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTFFileLoader", function() { return _legacy_glTF__WEBPACK_IMPORTED_MODULE_0__["GLTFFileLoader"]; });
 
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTFValidation", function() { return _legacy_glTF__WEBPACK_IMPORTED_MODULE_0__["GLTFValidation"]; });
+
 /* harmony import */ var _legacy_glTF2__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./legacy-glTF2 */ "./legacy/legacy-glTF2.ts");
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTF2", function() { return _legacy_glTF2__WEBPACK_IMPORTED_MODULE_1__["GLTF2"]; });
 
@@ -4853,14 +4992,14 @@ __webpack_require__.r(__webpack_exports__);
 
 /***/ }),
 
-/***/ "babylonjs/Misc/observable":
+/***/ "babylonjs/Misc/tools":
 /*!****************************************************************************************************!*\
   !*** external {"root":"BABYLON","commonjs":"babylonjs","commonjs2":"babylonjs","amd":"babylonjs"} ***!
   \****************************************************************************************************/
 /*! no static exports found */
 /***/ (function(module, exports) {
 
-module.exports = __WEBPACK_EXTERNAL_MODULE_babylonjs_Misc_observable__;
+module.exports = __WEBPACK_EXTERNAL_MODULE_babylonjs_Misc_tools__;
 
 /***/ })
 

dist/preview release/loaders/babylon.glTFFileLoader.js

@@ -7,7 +7,7 @@
 		exports["babylonjs-loaders"] = factory(require("babylonjs"));
 	else
 		root["LOADERS"] = factory(root["BABYLON"]);
-})((typeof self !== "undefined" ? self : typeof global !== "undefined" ? global : this), function(__WEBPACK_EXTERNAL_MODULE_babylonjs_Misc_observable__) {
+})((typeof self !== "undefined" ? self : typeof global !== "undefined" ? global : this), function(__WEBPACK_EXTERNAL_MODULE_babylonjs_Misc_tools__) {
 return /******/ (function(modules) { // webpackBootstrap
 /******/ 	// The module cache
 /******/ 	var installedModules = {};
@@ -448,7 +448,7 @@ __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "GLTFLoader", function() { return GLTFLoader; });
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "GLTFLoaderExtension", function() { return GLTFLoaderExtension; });
 /* harmony import */ var _glTFLoaderInterfaces__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./glTFLoaderInterfaces */ "./glTF/1.0/glTFLoaderInterfaces.ts");
-/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_1___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_1__);
 /* harmony import */ var _glTFLoaderUtils__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! ./glTFLoaderUtils */ "./glTF/1.0/glTFLoaderUtils.ts");
 /* harmony import */ var _glTFFileLoader__WEBPACK_IMPORTED_MODULE_3__ = __webpack_require__(/*! ../glTFFileLoader */ "./glTF/glTFFileLoader.ts");
@@ -2255,7 +2255,7 @@ var EBlendingFunction;
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "GLTFUtils", function() { return GLTFUtils; });
 /* harmony import */ var _glTFLoaderInterfaces__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./glTFLoaderInterfaces */ "./glTF/1.0/glTFLoaderInterfaces.ts");
-/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_1___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_1__);
 
 
@@ -2504,7 +2504,7 @@ __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "GLTFMaterialsCommonExtension", function() { return GLTFMaterialsCommonExtension; });
 /* harmony import */ var tslib__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! tslib */ "../../node_modules/tslib/tslib.es6.js");
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./glTFLoader */ "./glTF/1.0/glTFLoader.ts");
-/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_2___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_2__);
 
 
@@ -2697,7 +2697,7 @@ __webpack_require__.r(__webpack_exports__);
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "EXT_lights_image_based", function() { return EXT_lights_image_based; });
-/* harmony import */ var babylonjs_Maths_math_scalar__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math.scalar */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Maths_math_scalar__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math.scalar */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Maths_math_scalar__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Maths_math_scalar__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -2890,7 +2890,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_0__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "KHR_draco_mesh_compression", function() { return KHR_draco_mesh_compression; });
-/* harmony import */ var babylonjs_Meshes_Compression_dracoCompression__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Meshes/Compression/dracoCompression */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Meshes_Compression_dracoCompression__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Meshes/Compression/dracoCompression */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Meshes_Compression_dracoCompression__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Meshes_Compression_dracoCompression__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -2984,7 +2984,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "KHR_lights", function() { return KHR_lights; });
-/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -3082,7 +3082,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_clearcoat", function() { return KHR_materials_clearcoat; });
-/* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/PBR/pbrMaterial */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/PBR/pbrMaterial */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -3182,7 +3182,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_pbrSpecularGlossiness", function() { return KHR_materials_pbrSpecularGlossiness; });
-/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -3271,7 +3271,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_sheen", function() { return KHR_materials_sheen; });
-/* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/PBR/pbrMaterial */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/PBR/pbrMaterial */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -3352,7 +3352,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_specular", function() { return KHR_materials_specular; });
-/* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/PBR/pbrMaterial */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/PBR/pbrMaterial */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -3422,7 +3422,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_unlit", function() { return KHR_materials_unlit; });
-/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -3540,7 +3540,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_0__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "KHR_texture_transform", function() { return KHR_texture_transform; });
-/* harmony import */ var babylonjs_Materials_Textures_texture__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/Textures/texture */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Materials_Textures_texture__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/Textures/texture */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Materials_Textures_texture__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Materials_Textures_texture__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -3610,7 +3610,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "MSFT_audio_emitter", function() { return MSFT_audio_emitter; });
-/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -3844,7 +3844,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "MSFT_lod", function() { return MSFT_lod; });
-/* harmony import */ var babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Misc/observable */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Misc/observable */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -4167,7 +4167,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "MSFT_minecraftMesh", function() { return MSFT_minecraftMesh; });
-/* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/PBR/pbrMaterial */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/PBR/pbrMaterial */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -4220,7 +4220,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "MSFT_sRGBFactors", function() { return MSFT_sRGBFactors; });
-/* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/PBR/pbrMaterial */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/PBR/pbrMaterial */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -4347,7 +4347,7 @@ __webpack_require__.r(__webpack_exports__);
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "ArrayItem", function() { return ArrayItem; });
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "GLTFLoader", function() { return GLTFLoader; });
-/* harmony import */ var babylonjs_Misc_deferred__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Misc/deferred */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Misc_deferred__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Misc/deferred */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Misc_deferred__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Misc_deferred__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFFileLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFFileLoader */ "./glTF/glTFFileLoader.ts");
 
@@ -6510,8 +6510,10 @@ __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "GLTFLoaderAnimationStartMode", function() { return GLTFLoaderAnimationStartMode; });
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "GLTFLoaderState", function() { return GLTFLoaderState; });
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "GLTFFileLoader", function() { return GLTFFileLoader; });
-/* harmony import */ var babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Misc/observable */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Misc/observable */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__);
+/* harmony import */ var _glTFValidation__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./glTFValidation */ "./glTF/glTFValidation.ts");
+
 
 
 
@@ -6931,7 +6933,7 @@ var GLTFFileLoader = /** @class */ (function () {
             }, onProgress, true, true, onError);
         }
         return scene._requestFile(url, function (data, response) {
-            _this._validateAsync(scene, data, babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__["Tools"].GetFolderPath(url), babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__["Tools"].GetFilename(url));
+            _this._validate(scene, data, babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__["Tools"].GetFolderPath(url), babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__["Tools"].GetFilename(url));
             onSuccess({ json: _this._parseJson(data) }, response);
         }, onProgress, true, false, onError);
     };
@@ -6939,7 +6941,7 @@ var GLTFFileLoader = /** @class */ (function () {
     GLTFFileLoader.prototype.readFile = function (scene, file, onSuccess, onProgress, useArrayBuffer, onError) {
         var _this = this;
         return scene._readFile(file, function (data) {
-            _this._validateAsync(scene, data, "file:", file.name);
+            _this._validate(scene, data, "file:", file.name);
             if (useArrayBuffer) {
                 var arrayBuffer_1 = data;
                 _this._unpackBinaryAsync(new babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__["DataReader"]({
@@ -7010,7 +7012,7 @@ var GLTFFileLoader = /** @class */ (function () {
     };
     /** @hidden */
     GLTFFileLoader.prototype.directLoad = function (scene, data) {
-        this._validateAsync(scene, data);
+        this._validate(scene, data);
         return { json: this._parseJson(data) };
     };
     /** @hidden */
@@ -7042,33 +7044,23 @@ var GLTFFileLoader = /** @class */ (function () {
             });
         });
     };
-    GLTFFileLoader.prototype._validateAsync = function (scene, data, rootUrl, fileName) {
+    GLTFFileLoader.prototype._validate = function (scene, data, rootUrl, fileName) {
         var _this = this;
         if (rootUrl === void 0) { rootUrl = ""; }
-        if (!this.validate || typeof GLTFValidator === "undefined") {
-            return Promise.resolve();
+        if (fileName === void 0) { fileName = ""; }
+        if (!this.validate) {
+            return;
         }
         this._startPerformanceCounter("Validate JSON");
-        var options = {
-            externalResourceFunction: function (uri) {
-                return _this.preprocessUrlAsync(rootUrl + uri)
-                    .then(function (url) { return scene._loadFileAsync(url, undefined, true, true); })
-                    .then(function (data) { return new Uint8Array(data); });
-            }
-        };
-        if (fileName) {
-            options.uri = (rootUrl === "file:" ? fileName : rootUrl + fileName);
-        }
-        var promise = (data instanceof ArrayBuffer)
-            ? GLTFValidator.validateBytes(new Uint8Array(data), options)
-            : GLTFValidator.validateString(data, options);
-        return promise.then(function (result) {
+        _glTFValidation__WEBPACK_IMPORTED_MODULE_1__["GLTFValidation"].ValidateAsync(data, rootUrl, fileName, function (uri) {
+            return _this.preprocessUrlAsync(rootUrl + uri).then(function (url) { return scene._loadFileAsync(url, undefined, true, true); });
+        }).then(function (result) {
             _this._endPerformanceCounter("Validate JSON");
             _this.onValidatedObservable.notifyObservers(result);
             _this.onValidatedObservable.clear();
         }, function (reason) {
             _this._endPerformanceCounter("Validate JSON");
-            babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__["Tools"].Warn("Failed to validate: " + reason);
+            babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__["Tools"].Warn("Failed to validate: " + reason.message);
             _this.onValidatedObservable.clear();
         });
     };
@@ -7299,16 +7291,154 @@ if (babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__["SceneLoader"]) {
 
 /***/ }),
 
+/***/ "./glTF/glTFValidation.ts":
+/*!********************************!*\
+  !*** ./glTF/glTFValidation.ts ***!
+  \********************************/
+/*! exports provided: GLTFValidation */
+/***/ (function(module, __webpack_exports__, __webpack_require__) {
+
+"use strict";
+__webpack_require__.r(__webpack_exports__);
+/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "GLTFValidation", function() { return GLTFValidation; });
+/* harmony import */ var babylonjs_Misc_tools__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Misc/tools */ "babylonjs/Misc/tools");
+/* harmony import */ var babylonjs_Misc_tools__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Misc_tools__WEBPACK_IMPORTED_MODULE_0__);
+
+function validateAsync(data, rootUrl, fileName, getExternalResource) {
+    var options = {
+        externalResourceFunction: function (uri) { return getExternalResource(uri).then(function (value) { return new Uint8Array(value); }); }
+    };
+    if (fileName) {
+        options.uri = (rootUrl === "file:" ? fileName : rootUrl + fileName);
+    }
+    return (data instanceof ArrayBuffer)
+        ? GLTFValidator.validateBytes(new Uint8Array(data), options)
+        : GLTFValidator.validateString(data, options);
+}
+/**
+ * The worker function that gets converted to a blob url to pass into a worker.
+ */
+function workerFunc() {
+    var pendingExternalResources = [];
+    onmessage = function (message) {
+        var data = message.data;
+        switch (data.id) {
+            case "init": {
+                importScripts(data.url);
+                break;
+            }
+            case "validate": {
+                validateAsync(data.data, data.rootUrl, data.fileName, function (uri) { return new Promise(function (resolve, reject) {
+                    var index = pendingExternalResources.length;
+                    pendingExternalResources.push({ resolve: resolve, reject: reject });
+                    postMessage({ id: "getExternalResource", index: index, uri: uri });
+                }); }).then(function (value) {
+                    postMessage({ id: "validate.resolve", value: value });
+                }, function (reason) {
+                    postMessage({ id: "validate.reject", reason: reason });
+                });
+                break;
+            }
+            case "getExternalResource.resolve": {
+                pendingExternalResources[data.index].resolve(data.value);
+                break;
+            }
+            case "getExternalResource.reject": {
+                pendingExternalResources[data.index].reject(data.reason);
+                break;
+            }
+        }
+    };
+}
+/**
+ * glTF validation
+ */
+var GLTFValidation = /** @class */ (function () {
+    function GLTFValidation() {
+    }
+    /**
+     * Validate a glTF asset using the glTF-Validator.
+     * @param data The JSON of a glTF or the array buffer of a binary glTF
+     * @param rootUrl The root url for the glTF
+     * @param fileName The file name for the glTF
+     * @param getExternalResource The callback to get external resources for the glTF validator
+     * @returns A promise that resolves with the glTF validation results once complete
+     */
+    GLTFValidation.ValidateAsync = function (data, rootUrl, fileName, getExternalResource) {
+        var _this = this;
+        if (typeof Worker === "function") {
+            return new Promise(function (resolve, reject) {
+                var workerContent = validateAsync + "(" + workerFunc + ")()";
+                var workerBlobUrl = URL.createObjectURL(new Blob([workerContent], { type: "application/javascript" }));
+                var worker = new Worker(workerBlobUrl);
+                var onError = function (error) {
+                    worker.removeEventListener("error", onError);
+                    worker.removeEventListener("message", onMessage);
+                    reject(error);
+                };
+                var onMessage = function (message) {
+                    var data = message.data;
+                    switch (data.id) {
+                        case "getExternalResource": {
+                            getExternalResource(data.uri).then(function (value) {
+                                worker.postMessage({ id: "getExternalResource.resolve", index: data.index, value: value }, [value]);
+                            }, function (reason) {
+                                worker.postMessage({ id: "getExternalResource.reject", index: data.index, reason: reason });
+                            });
+                            break;
+                        }
+                        case "validate.resolve": {
+                            worker.removeEventListener("error", onError);
+                            worker.removeEventListener("message", onMessage);
+                            resolve(data.value);
+                            break;
+                        }
+                        case "validate.reject": {
+                            worker.removeEventListener("error", onError);
+                            worker.removeEventListener("message", onMessage);
+                            reject(data.reason);
+                        }
+                    }
+                };
+                worker.addEventListener("error", onError);
+                worker.addEventListener("message", onMessage);
+                worker.postMessage({ id: "init", url: babylonjs_Misc_tools__WEBPACK_IMPORTED_MODULE_0__["Tools"].GetAbsoluteUrl(_this.Configuration.url) });
+                worker.postMessage({ id: "validate", data: data, rootUrl: rootUrl, fileName: fileName });
+            });
+        }
+        else {
+            if (!this._LoadScriptPromise) {
+                this._LoadScriptPromise = babylonjs_Misc_tools__WEBPACK_IMPORTED_MODULE_0__["Tools"].LoadScriptAsync(this.Configuration.url);
+            }
+            return this._LoadScriptPromise.then(function () {
+                return validateAsync(data, rootUrl, fileName, getExternalResource);
+            });
+        }
+    };
+    /**
+     * The configuration. Defaults to `{ url: "https://preview.babylonjs.com/gltf_validator.js" }`.
+     */
+    GLTFValidation.Configuration = {
+        url: "https://preview.babylonjs.com/gltf_validator.js"
+    };
+    return GLTFValidation;
+}());
+
+
+
+/***/ }),
+
 /***/ "./legacy/legacy-glTF.ts":
 /*!*******************************!*\
   !*** ./legacy/legacy-glTF.ts ***!
   \*******************************/
-/*! exports provided: GLTFLoaderCoordinateSystemMode, GLTFLoaderAnimationStartMode, GLTFLoaderState, GLTFFileLoader */
+/*! exports provided: GLTFLoaderCoordinateSystemMode, GLTFLoaderAnimationStartMode, GLTFLoaderState, GLTFFileLoader, GLTFValidation */
 /***/ (function(module, __webpack_exports__, __webpack_require__) {
 
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* WEBPACK VAR INJECTION */(function(global) {/* harmony import */ var _glTF_glTFFileLoader__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ../glTF/glTFFileLoader */ "./glTF/glTFFileLoader.ts");
+/* harmony import */ var _glTF_glTFValidation__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTF/glTFValidation */ "./glTF/glTFValidation.ts");
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTFLoaderCoordinateSystemMode", function() { return _glTF_glTFFileLoader__WEBPACK_IMPORTED_MODULE_0__["GLTFLoaderCoordinateSystemMode"]; });
 
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTFLoaderAnimationStartMode", function() { return _glTF_glTFFileLoader__WEBPACK_IMPORTED_MODULE_0__["GLTFLoaderAnimationStartMode"]; });
@@ -7317,6 +7447,9 @@ __webpack_require__.r(__webpack_exports__);
 
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTFFileLoader", function() { return _glTF_glTFFileLoader__WEBPACK_IMPORTED_MODULE_0__["GLTFFileLoader"]; });
 
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTFValidation", function() { return _glTF_glTFValidation__WEBPACK_IMPORTED_MODULE_1__["GLTFValidation"]; });
+
+
 
 /**
  * This is the entry point for the UMD module.
@@ -7328,8 +7461,12 @@ if (typeof globalObject !== "undefined") {
     for (var key in _glTF_glTFFileLoader__WEBPACK_IMPORTED_MODULE_0__) {
         globalObject.BABYLON[key] = _glTF_glTFFileLoader__WEBPACK_IMPORTED_MODULE_0__[key];
     }
+    for (var key in _glTF_glTFValidation__WEBPACK_IMPORTED_MODULE_1__) {
+        globalObject.BABYLON[key] = _glTF_glTFValidation__WEBPACK_IMPORTED_MODULE_1__[key];
+    }
 }
 
+
 
 /* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../../../node_modules/webpack/buildin/global.js */ "../../node_modules/webpack/buildin/global.js")))
 
@@ -7420,7 +7557,7 @@ if (typeof globalObject !== "undefined") {
 /*!*****************************************!*\
   !*** ./legacy/legacy-glTFFileLoader.ts ***!
   \*****************************************/
-/*! exports provided: GLTF1, GLTF2, GLTFLoaderCoordinateSystemMode, GLTFLoaderAnimationStartMode, GLTFLoaderState, GLTFFileLoader */
+/*! exports provided: GLTF1, GLTF2, GLTFLoaderCoordinateSystemMode, GLTFLoaderAnimationStartMode, GLTFLoaderState, GLTFFileLoader, GLTFValidation */
 /***/ (function(module, __webpack_exports__, __webpack_require__) {
 
 "use strict";
@@ -7434,6 +7571,8 @@ __webpack_require__.r(__webpack_exports__);
 
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTFFileLoader", function() { return _legacy_glTF__WEBPACK_IMPORTED_MODULE_0__["GLTFFileLoader"]; });
 
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTFValidation", function() { return _legacy_glTF__WEBPACK_IMPORTED_MODULE_0__["GLTFValidation"]; });
+
 /* harmony import */ var _legacy_glTF1__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./legacy-glTF1 */ "./legacy/legacy-glTF1.ts");
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTF1", function() { return _legacy_glTF1__WEBPACK_IMPORTED_MODULE_1__["GLTF1"]; });
 
@@ -7447,14 +7586,14 @@ __webpack_require__.r(__webpack_exports__);
 
 /***/ }),
 
-/***/ "babylonjs/Misc/observable":
+/***/ "babylonjs/Misc/tools":
 /*!****************************************************************************************************!*\
   !*** external {"root":"BABYLON","commonjs":"babylonjs","commonjs2":"babylonjs","amd":"babylonjs"} ***!
   \****************************************************************************************************/
 /*! no static exports found */
 /***/ (function(module, exports) {
 
-module.exports = __WEBPACK_EXTERNAL_MODULE_babylonjs_Misc_observable__;
+module.exports = __WEBPACK_EXTERNAL_MODULE_babylonjs_Misc_tools__;
 
 /***/ })
 

dist/preview release/loaders/babylon.objFileLoader.js

@@ -7,7 +7,7 @@
 		exports["babylonjs-loaders"] = factory(require("babylonjs"));
 	else
 		root["LOADERS"] = factory(root["BABYLON"]);
-})((typeof self !== "undefined" ? self : typeof global !== "undefined" ? global : this), function(__WEBPACK_EXTERNAL_MODULE_babylonjs_Misc_observable__) {
+})((typeof self !== "undefined" ? self : typeof global !== "undefined" ? global : this), function(__WEBPACK_EXTERNAL_MODULE_babylonjs_Misc_tools__) {
 return /******/ (function(modules) { // webpackBootstrap
 /******/ 	// The module cache
 /******/ 	var installedModules = {};
@@ -157,7 +157,7 @@ __webpack_require__.r(__webpack_exports__);
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "MTLFileLoader", function() { return MTLFileLoader; });
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "OBJFileLoader", function() { return OBJFileLoader; });
-/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__);
 
 
@@ -1247,14 +1247,14 @@ if (typeof globalObject !== "undefined") {
 
 /***/ }),
 
-/***/ "babylonjs/Misc/observable":
+/***/ "babylonjs/Misc/tools":
 /*!****************************************************************************************************!*\
   !*** external {"root":"BABYLON","commonjs":"babylonjs","commonjs2":"babylonjs","amd":"babylonjs"} ***!
   \****************************************************************************************************/
 /*! no static exports found */
 /***/ (function(module, exports) {
 
-module.exports = __WEBPACK_EXTERNAL_MODULE_babylonjs_Misc_observable__;
+module.exports = __WEBPACK_EXTERNAL_MODULE_babylonjs_Misc_tools__;
 
 /***/ })
 

dist/preview release/loaders/babylon.stlFileLoader.js

@@ -7,7 +7,7 @@
 		exports["babylonjs-loaders"] = factory(require("babylonjs"));
 	else
 		root["LOADERS"] = factory(root["BABYLON"]);
-})((typeof self !== "undefined" ? self : typeof global !== "undefined" ? global : this), function(__WEBPACK_EXTERNAL_MODULE_babylonjs_Misc_observable__) {
+})((typeof self !== "undefined" ? self : typeof global !== "undefined" ? global : this), function(__WEBPACK_EXTERNAL_MODULE_babylonjs_Misc_tools__) {
 return /******/ (function(modules) { // webpackBootstrap
 /******/ 	// The module cache
 /******/ 	var installedModules = {};
@@ -154,7 +154,7 @@ __webpack_require__.r(__webpack_exports__);
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "STLFileLoader", function() { return STLFileLoader; });
-/* harmony import */ var babylonjs_Misc_tools__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Misc/tools */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Misc_tools__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Misc/tools */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Misc_tools__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Misc_tools__WEBPACK_IMPORTED_MODULE_0__);
 
 
@@ -400,14 +400,14 @@ if (typeof globalObject !== "undefined") {
 
 /***/ }),
 
-/***/ "babylonjs/Misc/observable":
+/***/ "babylonjs/Misc/tools":
 /*!****************************************************************************************************!*\
   !*** external {"root":"BABYLON","commonjs":"babylonjs","commonjs2":"babylonjs","amd":"babylonjs"} ***!
   \****************************************************************************************************/
 /*! no static exports found */
 /***/ (function(module, exports) {
 
-module.exports = __WEBPACK_EXTERNAL_MODULE_babylonjs_Misc_observable__;
+module.exports = __WEBPACK_EXTERNAL_MODULE_babylonjs_Misc_tools__;
 
 /***/ })
 

dist/preview release/loaders/babylonjs.loaders.d.ts

@@ -1,5 +1,35 @@
 declare module BABYLON {
     /**
+     * Configuration for glTF validation
+     */
+    export interface IGLTFValidationConfiguration {
+        /**
+         * The url of the glTF validator.
+         */
+        url: string;
+    }
+    /**
+     * glTF validation
+     */
+    export class GLTFValidation {
+        /**
+         * The configuration. Defaults to `{ url: "https://preview.babylonjs.com/gltf_validator.js" }`.
+         */
+        static Configuration: IGLTFValidationConfiguration;
+        private static _LoadScriptPromise;
+        /**
+         * Validate a glTF asset using the glTF-Validator.
+         * @param data The JSON of a glTF or the array buffer of a binary glTF
+         * @param rootUrl The root url for the glTF
+         * @param fileName The file name for the glTF
+         * @param getExternalResource The callback to get external resources for the glTF validator
+         * @returns A promise that resolves with the glTF validation results once complete
+         */
+        static ValidateAsync(data: string | ArrayBuffer, rootUrl: string, fileName: string, getExternalResource: (uri: string) => Promise<ArrayBuffer>): Promise<BABYLON.GLTF2.IGLTFValidationResults>;
+    }
+}
+declare module BABYLON {
+    /**
      * Mode that determines the coordinate system to use.
      */
     export enum GLTFLoaderCoordinateSystemMode {
@@ -308,7 +338,7 @@ declare module BABYLON {
          * @returns a promise that resolves when the asset is completely loaded.
          */
         whenCompleteAsync(): Promise<void>;
-        private _validateAsync;
+        private _validate;
         private _getLoader;
         private _parseJson;
         private _unpackBinaryAsync;

dist/preview release/loaders/babylonjs.loaders.js

@@ -7,7 +7,7 @@
 		exports["babylonjs-loaders"] = factory(require("babylonjs"));
 	else
 		root["LOADERS"] = factory(root["BABYLON"]);
-})((typeof self !== "undefined" ? self : typeof global !== "undefined" ? global : this), function(__WEBPACK_EXTERNAL_MODULE_babylonjs_Misc_observable__) {
+})((typeof self !== "undefined" ? self : typeof global !== "undefined" ? global : this), function(__WEBPACK_EXTERNAL_MODULE_babylonjs_Misc_tools__) {
 return /******/ (function(modules) { // webpackBootstrap
 /******/ 	// The module cache
 /******/ 	var installedModules = {};
@@ -386,7 +386,7 @@ __webpack_require__.r(__webpack_exports__);
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "MTLFileLoader", function() { return MTLFileLoader; });
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "OBJFileLoader", function() { return OBJFileLoader; });
-/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__);
 
 
@@ -1472,7 +1472,7 @@ __webpack_require__.r(__webpack_exports__);
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "STLFileLoader", function() { return STLFileLoader; });
-/* harmony import */ var babylonjs_Misc_tools__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Misc/tools */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Misc_tools__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Misc/tools */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Misc_tools__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Misc_tools__WEBPACK_IMPORTED_MODULE_0__);
 
 
@@ -1781,7 +1781,7 @@ __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "GLTFLoader", function() { return GLTFLoader; });
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "GLTFLoaderExtension", function() { return GLTFLoaderExtension; });
 /* harmony import */ var _glTFLoaderInterfaces__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./glTFLoaderInterfaces */ "./glTF/1.0/glTFLoaderInterfaces.ts");
-/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_1___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_1__);
 /* harmony import */ var _glTFLoaderUtils__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! ./glTFLoaderUtils */ "./glTF/1.0/glTFLoaderUtils.ts");
 /* harmony import */ var _glTFFileLoader__WEBPACK_IMPORTED_MODULE_3__ = __webpack_require__(/*! ../glTFFileLoader */ "./glTF/glTFFileLoader.ts");
@@ -3588,7 +3588,7 @@ var EBlendingFunction;
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "GLTFUtils", function() { return GLTFUtils; });
 /* harmony import */ var _glTFLoaderInterfaces__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./glTFLoaderInterfaces */ "./glTF/1.0/glTFLoaderInterfaces.ts");
-/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_1___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_1__);
 
 
@@ -3837,7 +3837,7 @@ __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "GLTFMaterialsCommonExtension", function() { return GLTFMaterialsCommonExtension; });
 /* harmony import */ var tslib__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! tslib */ "../../node_modules/tslib/tslib.es6.js");
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./glTFLoader */ "./glTF/1.0/glTFLoader.ts");
-/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_2___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_2__);
 
 
@@ -4030,7 +4030,7 @@ __webpack_require__.r(__webpack_exports__);
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "EXT_lights_image_based", function() { return EXT_lights_image_based; });
-/* harmony import */ var babylonjs_Maths_math_scalar__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math.scalar */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Maths_math_scalar__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math.scalar */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Maths_math_scalar__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Maths_math_scalar__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -4223,7 +4223,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_0__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "KHR_draco_mesh_compression", function() { return KHR_draco_mesh_compression; });
-/* harmony import */ var babylonjs_Meshes_Compression_dracoCompression__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Meshes/Compression/dracoCompression */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Meshes_Compression_dracoCompression__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Meshes/Compression/dracoCompression */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Meshes_Compression_dracoCompression__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Meshes_Compression_dracoCompression__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -4317,7 +4317,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "KHR_lights", function() { return KHR_lights; });
-/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -4415,7 +4415,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_clearcoat", function() { return KHR_materials_clearcoat; });
-/* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/PBR/pbrMaterial */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/PBR/pbrMaterial */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -4515,7 +4515,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_pbrSpecularGlossiness", function() { return KHR_materials_pbrSpecularGlossiness; });
-/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -4604,7 +4604,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_sheen", function() { return KHR_materials_sheen; });
-/* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/PBR/pbrMaterial */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/PBR/pbrMaterial */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -4685,7 +4685,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_specular", function() { return KHR_materials_specular; });
-/* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/PBR/pbrMaterial */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/PBR/pbrMaterial */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -4755,7 +4755,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_unlit", function() { return KHR_materials_unlit; });
-/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -4873,7 +4873,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_0__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "KHR_texture_transform", function() { return KHR_texture_transform; });
-/* harmony import */ var babylonjs_Materials_Textures_texture__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/Textures/texture */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Materials_Textures_texture__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/Textures/texture */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Materials_Textures_texture__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Materials_Textures_texture__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -4943,7 +4943,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "MSFT_audio_emitter", function() { return MSFT_audio_emitter; });
-/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Maths/math */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Maths_math__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -5177,7 +5177,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "MSFT_lod", function() { return MSFT_lod; });
-/* harmony import */ var babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Misc/observable */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Misc/observable */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -5500,7 +5500,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "MSFT_minecraftMesh", function() { return MSFT_minecraftMesh; });
-/* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/PBR/pbrMaterial */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/PBR/pbrMaterial */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -5553,7 +5553,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "MSFT_sRGBFactors", function() { return MSFT_sRGBFactors; });
-/* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/PBR/pbrMaterial */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Materials/PBR/pbrMaterial */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
@@ -5680,7 +5680,7 @@ __webpack_require__.r(__webpack_exports__);
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "ArrayItem", function() { return ArrayItem; });
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "GLTFLoader", function() { return GLTFLoader; });
-/* harmony import */ var babylonjs_Misc_deferred__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Misc/deferred */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Misc_deferred__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Misc/deferred */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Misc_deferred__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Misc_deferred__WEBPACK_IMPORTED_MODULE_0__);
 /* harmony import */ var _glTFFileLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFFileLoader */ "./glTF/glTFFileLoader.ts");
 
@@ -7843,8 +7843,10 @@ __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "GLTFLoaderAnimationStartMode", function() { return GLTFLoaderAnimationStartMode; });
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "GLTFLoaderState", function() { return GLTFLoaderState; });
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "GLTFFileLoader", function() { return GLTFFileLoader; });
-/* harmony import */ var babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Misc/observable */ "babylonjs/Misc/observable");
+/* harmony import */ var babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Misc/observable */ "babylonjs/Misc/tools");
 /* harmony import */ var babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__);
+/* harmony import */ var _glTFValidation__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./glTFValidation */ "./glTF/glTFValidation.ts");
+
 
 
 
@@ -8264,7 +8266,7 @@ var GLTFFileLoader = /** @class */ (function () {
             }, onProgress, true, true, onError);
         }
         return scene._requestFile(url, function (data, response) {
-            _this._validateAsync(scene, data, babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__["Tools"].GetFolderPath(url), babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__["Tools"].GetFilename(url));
+            _this._validate(scene, data, babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__["Tools"].GetFolderPath(url), babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__["Tools"].GetFilename(url));
             onSuccess({ json: _this._parseJson(data) }, response);
         }, onProgress, true, false, onError);
     };
@@ -8272,7 +8274,7 @@ var GLTFFileLoader = /** @class */ (function () {
     GLTFFileLoader.prototype.readFile = function (scene, file, onSuccess, onProgress, useArrayBuffer, onError) {
         var _this = this;
         return scene._readFile(file, function (data) {
-            _this._validateAsync(scene, data, "file:", file.name);
+            _this._validate(scene, data, "file:", file.name);
             if (useArrayBuffer) {
                 var arrayBuffer_1 = data;
                 _this._unpackBinaryAsync(new babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__["DataReader"]({
@@ -8343,7 +8345,7 @@ var GLTFFileLoader = /** @class */ (function () {
     };
     /** @hidden */
     GLTFFileLoader.prototype.directLoad = function (scene, data) {
-        this._validateAsync(scene, data);
+        this._validate(scene, data);
         return { json: this._parseJson(data) };
     };
     /** @hidden */
@@ -8375,33 +8377,23 @@ var GLTFFileLoader = /** @class */ (function () {
             });
         });
     };
-    GLTFFileLoader.prototype._validateAsync = function (scene, data, rootUrl, fileName) {
+    GLTFFileLoader.prototype._validate = function (scene, data, rootUrl, fileName) {
         var _this = this;
         if (rootUrl === void 0) { rootUrl = ""; }
-        if (!this.validate || typeof GLTFValidator === "undefined") {
-            return Promise.resolve();
+        if (fileName === void 0) { fileName = ""; }
+        if (!this.validate) {
+            return;
         }
         this._startPerformanceCounter("Validate JSON");
-        var options = {
-            externalResourceFunction: function (uri) {
-                return _this.preprocessUrlAsync(rootUrl + uri)
-                    .then(function (url) { return scene._loadFileAsync(url, undefined, true, true); })
-                    .then(function (data) { return new Uint8Array(data); });
-            }
-        };
-        if (fileName) {
-            options.uri = (rootUrl === "file:" ? fileName : rootUrl + fileName);
-        }
-        var promise = (data instanceof ArrayBuffer)
-            ? GLTFValidator.validateBytes(new Uint8Array(data), options)
-            : GLTFValidator.validateString(data, options);
-        return promise.then(function (result) {
+        _glTFValidation__WEBPACK_IMPORTED_MODULE_1__["GLTFValidation"].ValidateAsync(data, rootUrl, fileName, function (uri) {
+            return _this.preprocessUrlAsync(rootUrl + uri).then(function (url) { return scene._loadFileAsync(url, undefined, true, true); });
+        }).then(function (result) {
             _this._endPerformanceCounter("Validate JSON");
             _this.onValidatedObservable.notifyObservers(result);
             _this.onValidatedObservable.clear();
         }, function (reason) {
             _this._endPerformanceCounter("Validate JSON");
-            babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__["Tools"].Warn("Failed to validate: " + reason);
+            babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__["Tools"].Warn("Failed to validate: " + reason.message);
             _this.onValidatedObservable.clear();
         });
     };
@@ -8632,11 +8624,148 @@ if (babylonjs_Misc_observable__WEBPACK_IMPORTED_MODULE_0__["SceneLoader"]) {
 
 /***/ }),
 
+/***/ "./glTF/glTFValidation.ts":
+/*!********************************!*\
+  !*** ./glTF/glTFValidation.ts ***!
+  \********************************/
+/*! exports provided: GLTFValidation */
+/***/ (function(module, __webpack_exports__, __webpack_require__) {
+
+"use strict";
+__webpack_require__.r(__webpack_exports__);
+/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "GLTFValidation", function() { return GLTFValidation; });
+/* harmony import */ var babylonjs_Misc_tools__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! babylonjs/Misc/tools */ "babylonjs/Misc/tools");
+/* harmony import */ var babylonjs_Misc_tools__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(babylonjs_Misc_tools__WEBPACK_IMPORTED_MODULE_0__);
+
+function validateAsync(data, rootUrl, fileName, getExternalResource) {
+    var options = {
+        externalResourceFunction: function (uri) { return getExternalResource(uri).then(function (value) { return new Uint8Array(value); }); }
+    };
+    if (fileName) {
+        options.uri = (rootUrl === "file:" ? fileName : rootUrl + fileName);
+    }
+    return (data instanceof ArrayBuffer)
+        ? GLTFValidator.validateBytes(new Uint8Array(data), options)
+        : GLTFValidator.validateString(data, options);
+}
+/**
+ * The worker function that gets converted to a blob url to pass into a worker.
+ */
+function workerFunc() {
+    var pendingExternalResources = [];
+    onmessage = function (message) {
+        var data = message.data;
+        switch (data.id) {
+            case "init": {
+                importScripts(data.url);
+                break;
+            }
+            case "validate": {
+                validateAsync(data.data, data.rootUrl, data.fileName, function (uri) { return new Promise(function (resolve, reject) {
+                    var index = pendingExternalResources.length;
+                    pendingExternalResources.push({ resolve: resolve, reject: reject });
+                    postMessage({ id: "getExternalResource", index: index, uri: uri });
+                }); }).then(function (value) {
+                    postMessage({ id: "validate.resolve", value: value });
+                }, function (reason) {
+                    postMessage({ id: "validate.reject", reason: reason });
+                });
+                break;
+            }
+            case "getExternalResource.resolve": {
+                pendingExternalResources[data.index].resolve(data.value);
+                break;
+            }
+            case "getExternalResource.reject": {
+                pendingExternalResources[data.index].reject(data.reason);
+                break;
+            }
+        }
+    };
+}
+/**
+ * glTF validation
+ */
+var GLTFValidation = /** @class */ (function () {
+    function GLTFValidation() {
+    }
+    /**
+     * Validate a glTF asset using the glTF-Validator.
+     * @param data The JSON of a glTF or the array buffer of a binary glTF
+     * @param rootUrl The root url for the glTF
+     * @param fileName The file name for the glTF
+     * @param getExternalResource The callback to get external resources for the glTF validator
+     * @returns A promise that resolves with the glTF validation results once complete
+     */
+    GLTFValidation.ValidateAsync = function (data, rootUrl, fileName, getExternalResource) {
+        var _this = this;
+        if (typeof Worker === "function") {
+            return new Promise(function (resolve, reject) {
+                var workerContent = validateAsync + "(" + workerFunc + ")()";
+                var workerBlobUrl = URL.createObjectURL(new Blob([workerContent], { type: "application/javascript" }));
+                var worker = new Worker(workerBlobUrl);
+                var onError = function (error) {
+                    worker.removeEventListener("error", onError);
+                    worker.removeEventListener("message", onMessage);
+                    reject(error);
+                };
+                var onMessage = function (message) {
+                    var data = message.data;
+                    switch (data.id) {
+                        case "getExternalResource": {
+                            getExternalResource(data.uri).then(function (value) {
+                                worker.postMessage({ id: "getExternalResource.resolve", index: data.index, value: value }, [value]);
+                            }, function (reason) {
+                                worker.postMessage({ id: "getExternalResource.reject", index: data.index, reason: reason });
+                            });
+                            break;
+                        }
+                        case "validate.resolve": {
+                            worker.removeEventListener("error", onError);
+                            worker.removeEventListener("message", onMessage);
+                            resolve(data.value);
+                            break;
+                        }
+                        case "validate.reject": {
+                            worker.removeEventListener("error", onError);
+                            worker.removeEventListener("message", onMessage);
+                            reject(data.reason);
+                        }
+                    }
+                };
+                worker.addEventListener("error", onError);
+                worker.addEventListener("message", onMessage);
+                worker.postMessage({ id: "init", url: babylonjs_Misc_tools__WEBPACK_IMPORTED_MODULE_0__["Tools"].GetAbsoluteUrl(_this.Configuration.url) });
+                worker.postMessage({ id: "validate", data: data, rootUrl: rootUrl, fileName: fileName });
+            });
+        }
+        else {
+            if (!this._LoadScriptPromise) {
+                this._LoadScriptPromise = babylonjs_Misc_tools__WEBPACK_IMPORTED_MODULE_0__["Tools"].LoadScriptAsync(this.Configuration.url);
+            }
+            return this._LoadScriptPromise.then(function () {
+                return validateAsync(data, rootUrl, fileName, getExternalResource);
+            });
+        }
+    };
+    /**
+     * The configuration. Defaults to `{ url: "https://preview.babylonjs.com/gltf_validator.js" }`.
+     */
+    GLTFValidation.Configuration = {
+        url: "https://preview.babylonjs.com/gltf_validator.js"
+    };
+    return GLTFValidation;
+}());
+
+
+
+/***/ }),
+
 /***/ "./glTF/index.ts":
 /*!***********************!*\
   !*** ./glTF/index.ts ***!
   \***********************/
-/*! exports provided: GLTFLoaderCoordinateSystemMode, GLTFLoaderAnimationStartMode, GLTFLoaderState, GLTFFileLoader, GLTF1, GLTF2 */
+/*! exports provided: GLTFLoaderCoordinateSystemMode, GLTFLoaderAnimationStartMode, GLTFLoaderState, GLTFFileLoader, GLTFValidation, GLTF1, GLTF2 */
 /***/ (function(module, __webpack_exports__, __webpack_require__) {
 
 "use strict";
@@ -8650,10 +8779,14 @@ __webpack_require__.r(__webpack_exports__);
 
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTFFileLoader", function() { return _glTFFileLoader__WEBPACK_IMPORTED_MODULE_0__["GLTFFileLoader"]; });
 
-/* harmony import */ var _1_0__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./1.0 */ "./glTF/1.0/index.ts");
-/* harmony reexport (module object) */ __webpack_require__.d(__webpack_exports__, "GLTF1", function() { return _1_0__WEBPACK_IMPORTED_MODULE_1__; });
-/* harmony import */ var _2_0__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! ./2.0 */ "./glTF/2.0/index.ts");
-/* harmony reexport (module object) */ __webpack_require__.d(__webpack_exports__, "GLTF2", function() { return _2_0__WEBPACK_IMPORTED_MODULE_2__; });
+/* harmony import */ var _glTFValidation__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./glTFValidation */ "./glTF/glTFValidation.ts");
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTFValidation", function() { return _glTFValidation__WEBPACK_IMPORTED_MODULE_1__["GLTFValidation"]; });
+
+/* harmony import */ var _1_0__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! ./1.0 */ "./glTF/1.0/index.ts");
+/* harmony reexport (module object) */ __webpack_require__.d(__webpack_exports__, "GLTF1", function() { return _1_0__WEBPACK_IMPORTED_MODULE_2__; });
+/* harmony import */ var _2_0__WEBPACK_IMPORTED_MODULE_3__ = __webpack_require__(/*! ./2.0 */ "./glTF/2.0/index.ts");
+/* harmony reexport (module object) */ __webpack_require__.d(__webpack_exports__, "GLTF2", function() { return _2_0__WEBPACK_IMPORTED_MODULE_3__; });
+
 
 
 
@@ -8666,7 +8799,7 @@ __webpack_require__.r(__webpack_exports__);
 /*!******************!*\
   !*** ./index.ts ***!
   \******************/
-/*! exports provided: GLTFLoaderCoordinateSystemMode, GLTFLoaderAnimationStartMode, GLTFLoaderState, GLTFFileLoader, GLTF1, GLTF2, MTLFileLoader, OBJFileLoader, STLFileLoader */
+/*! exports provided: GLTFLoaderCoordinateSystemMode, GLTFLoaderAnimationStartMode, GLTFLoaderState, GLTFFileLoader, GLTFValidation, GLTF1, GLTF2, MTLFileLoader, OBJFileLoader, STLFileLoader */
 /***/ (function(module, __webpack_exports__, __webpack_require__) {
 
 "use strict";
@@ -8680,6 +8813,8 @@ __webpack_require__.r(__webpack_exports__);
 
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTFFileLoader", function() { return _glTF__WEBPACK_IMPORTED_MODULE_0__["GLTFFileLoader"]; });
 
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTFValidation", function() { return _glTF__WEBPACK_IMPORTED_MODULE_0__["GLTFValidation"]; });
+
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTF1", function() { return _glTF__WEBPACK_IMPORTED_MODULE_0__["GLTF1"]; });
 
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTF2", function() { return _glTF__WEBPACK_IMPORTED_MODULE_0__["GLTF2"]; });
@@ -8703,12 +8838,13 @@ __webpack_require__.r(__webpack_exports__);
 /*!*******************************!*\
   !*** ./legacy/legacy-glTF.ts ***!
   \*******************************/
-/*! exports provided: GLTFLoaderCoordinateSystemMode, GLTFLoaderAnimationStartMode, GLTFLoaderState, GLTFFileLoader */
+/*! exports provided: GLTFLoaderCoordinateSystemMode, GLTFLoaderAnimationStartMode, GLTFLoaderState, GLTFFileLoader, GLTFValidation */
 /***/ (function(module, __webpack_exports__, __webpack_require__) {
 
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* WEBPACK VAR INJECTION */(function(global) {/* harmony import */ var _glTF_glTFFileLoader__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ../glTF/glTFFileLoader */ "./glTF/glTFFileLoader.ts");
+/* harmony import */ var _glTF_glTFValidation__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTF/glTFValidation */ "./glTF/glTFValidation.ts");
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTFLoaderCoordinateSystemMode", function() { return _glTF_glTFFileLoader__WEBPACK_IMPORTED_MODULE_0__["GLTFLoaderCoordinateSystemMode"]; });
 
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTFLoaderAnimationStartMode", function() { return _glTF_glTFFileLoader__WEBPACK_IMPORTED_MODULE_0__["GLTFLoaderAnimationStartMode"]; });
@@ -8717,6 +8853,9 @@ __webpack_require__.r(__webpack_exports__);
 
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTFFileLoader", function() { return _glTF_glTFFileLoader__WEBPACK_IMPORTED_MODULE_0__["GLTFFileLoader"]; });
 
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTFValidation", function() { return _glTF_glTFValidation__WEBPACK_IMPORTED_MODULE_1__["GLTFValidation"]; });
+
+
 
 /**
  * This is the entry point for the UMD module.
@@ -8728,8 +8867,12 @@ if (typeof globalObject !== "undefined") {
     for (var key in _glTF_glTFFileLoader__WEBPACK_IMPORTED_MODULE_0__) {
         globalObject.BABYLON[key] = _glTF_glTFFileLoader__WEBPACK_IMPORTED_MODULE_0__[key];
     }
+    for (var key in _glTF_glTFValidation__WEBPACK_IMPORTED_MODULE_1__) {
+        globalObject.BABYLON[key] = _glTF_glTFValidation__WEBPACK_IMPORTED_MODULE_1__[key];
+    }
 }
 
+
 
 /* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../../../node_modules/webpack/buildin/global.js */ "../../node_modules/webpack/buildin/global.js")))
 
@@ -8880,7 +9023,7 @@ if (typeof globalObject !== "undefined") {
 /*!**************************!*\
   !*** ./legacy/legacy.ts ***!
   \**************************/
-/*! exports provided: GLTF1, GLTF2, GLTFLoaderCoordinateSystemMode, GLTFLoaderAnimationStartMode, GLTFLoaderState, GLTFFileLoader, MTLFileLoader, OBJFileLoader, STLFileLoader */
+/*! exports provided: GLTF1, GLTF2, GLTFLoaderCoordinateSystemMode, GLTFLoaderAnimationStartMode, GLTFLoaderState, GLTFFileLoader, GLTFValidation, MTLFileLoader, OBJFileLoader, STLFileLoader */
 /***/ (function(module, __webpack_exports__, __webpack_require__) {
 
 "use strict";
@@ -8895,6 +9038,8 @@ __webpack_require__.r(__webpack_exports__);
 
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTFFileLoader", function() { return _legacy_glTF__WEBPACK_IMPORTED_MODULE_1__["GLTFFileLoader"]; });
 
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTFValidation", function() { return _legacy_glTF__WEBPACK_IMPORTED_MODULE_1__["GLTFValidation"]; });
+
 /* harmony import */ var _legacy_glTF1__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! ./legacy-glTF1 */ "./legacy/legacy-glTF1.ts");
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "GLTF1", function() { return _legacy_glTF1__WEBPACK_IMPORTED_MODULE_2__["GLTF1"]; });
 
@@ -8919,14 +9064,14 @@ __webpack_require__.r(__webpack_exports__);
 
 /***/ }),
 
-/***/ "babylonjs/Misc/observable":
+/***/ "babylonjs/Misc/tools":
 /*!****************************************************************************************************!*\
   !*** external {"root":"BABYLON","commonjs":"babylonjs","commonjs2":"babylonjs","amd":"babylonjs"} ***!
   \****************************************************************************************************/
 /*! no static exports found */
 /***/ (function(module, exports) {
 
-module.exports = __WEBPACK_EXTERNAL_MODULE_babylonjs_Misc_observable__;
+module.exports = __WEBPACK_EXTERNAL_MODULE_babylonjs_Misc_tools__;
 
 /***/ })
 

dist/preview release/loaders/babylonjs.loaders.module.d.ts

@@ -1,3 +1,34 @@
+declare module "babylonjs-loaders/glTF/glTFValidation" {
+    import * as GLTF2 from 'babylonjs-gltf2interface';
+    /**
+     * Configuration for glTF validation
+     */
+    export interface IGLTFValidationConfiguration {
+        /**
+         * The url of the glTF validator.
+         */
+        url: string;
+    }
+    /**
+     * glTF validation
+     */
+    export class GLTFValidation {
+        /**
+         * The configuration. Defaults to `{ url: "https://preview.babylonjs.com/gltf_validator.js" }`.
+         */
+        static Configuration: IGLTFValidationConfiguration;
+        private static _LoadScriptPromise;
+        /**
+         * Validate a glTF asset using the glTF-Validator.
+         * @param data The JSON of a glTF or the array buffer of a binary glTF
+         * @param rootUrl The root url for the glTF
+         * @param fileName The file name for the glTF
+         * @param getExternalResource The callback to get external resources for the glTF validator
+         * @returns A promise that resolves with the glTF validation results once complete
+         */
+        static ValidateAsync(data: string | ArrayBuffer, rootUrl: string, fileName: string, getExternalResource: (uri: string) => Promise<ArrayBuffer>): Promise<GLTF2.IGLTFValidationResults>;
+    }
+}
 declare module "babylonjs-loaders/glTF/glTFFileLoader" {
     import * as GLTF2 from "babylonjs-gltf2interface";
     import { Nullable } from "babylonjs/types";
@@ -324,7 +355,7 @@ declare module "babylonjs-loaders/glTF/glTFFileLoader" {
          * @returns a promise that resolves when the asset is completely loaded.
          */
         whenCompleteAsync(): Promise<void>;
-        private _validateAsync;
+        private _validate;
         private _getLoader;
         private _parseJson;
         private _unpackBinaryAsync;
@@ -2184,6 +2215,7 @@ declare module "babylonjs-loaders/glTF/2.0/index" {
 }
 declare module "babylonjs-loaders/glTF/index" {
     export * from "babylonjs-loaders/glTF/glTFFileLoader";
+    export * from "babylonjs-loaders/glTF/glTFValidation";
     import * as GLTF1 from "babylonjs-loaders/glTF/1.0/index";
     import * as GLTF2 from "babylonjs-loaders/glTF/2.0/index";
     export { GLTF1, GLTF2 };
@@ -2502,6 +2534,7 @@ declare module "babylonjs-loaders/index" {
 }
 declare module "babylonjs-loaders/legacy/legacy-glTF" {
     export * from "babylonjs-loaders/glTF/glTFFileLoader";
+    export * from "babylonjs-loaders/glTF/glTFValidation";
 }
 declare module "babylonjs-loaders/legacy/legacy-glTF1" {
     import * as GLTF1 from "babylonjs-loaders/glTF/1.0/index";
@@ -2543,6 +2576,36 @@ declare module "babylonjs-loaders" {
 }
 declare module BABYLON {
     /**
+     * Configuration for glTF validation
+     */
+    export interface IGLTFValidationConfiguration {
+        /**
+         * The url of the glTF validator.
+         */
+        url: string;
+    }
+    /**
+     * glTF validation
+     */
+    export class GLTFValidation {
+        /**
+         * The configuration. Defaults to `{ url: "https://preview.babylonjs.com/gltf_validator.js" }`.
+         */
+        static Configuration: IGLTFValidationConfiguration;
+        private static _LoadScriptPromise;
+        /**
+         * Validate a glTF asset using the glTF-Validator.
+         * @param data The JSON of a glTF or the array buffer of a binary glTF
+         * @param rootUrl The root url for the glTF
+         * @param fileName The file name for the glTF
+         * @param getExternalResource The callback to get external resources for the glTF validator
+         * @returns A promise that resolves with the glTF validation results once complete
+         */
+        static ValidateAsync(data: string | ArrayBuffer, rootUrl: string, fileName: string, getExternalResource: (uri: string) => Promise<ArrayBuffer>): Promise<BABYLON.GLTF2.IGLTFValidationResults>;
+    }
+}
+declare module BABYLON {
+    /**
      * Mode that determines the coordinate system to use.
      */
     export enum GLTFLoaderCoordinateSystemMode {
@@ -2851,7 +2914,7 @@ declare module BABYLON {
          * @returns a promise that resolves when the asset is completely loaded.
          */
         whenCompleteAsync(): Promise<void>;
-        private _validateAsync;
+        private _validate;
         private _getLoader;
         private _parseJson;
         private _unpackBinaryAsync;

dist/preview release/packagesSizeBaseLine.json

@@ -1 +1 @@
-{"thinEngineOnly":119391,"engineOnly":156234,"sceneOnly":501959,"minGridMaterial":632345,"minStandardMaterial":756865}
+{"thinEngineOnly":119395,"engineOnly":156240,"sceneOnly":502047,"minGridMaterial":632428,"minStandardMaterial":756948}

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

@@ -34881,7 +34881,7 @@ declare module "babylonjs/Misc/tools" {
          * @param scriptId defines the id of the script element
          * @returns a promise request object
          */
-        static LoadScriptAsync(scriptUrl: string, scriptId?: string): Promise<boolean>;
+        static LoadScriptAsync(scriptUrl: string, scriptId?: string): Promise<void>;
         /**
          * Loads a file from a blob
          * @param fileToLoad defines the blob to use
@@ -35951,6 +35951,12 @@ declare module "babylonjs/scene" {
          */
         set forceWireframe(value: boolean);
         get forceWireframe(): boolean;
+        private _skipFrustumClipping;
+        /**
+         * Gets or sets a boolean indicating if we should skip the frustum clipping part of the active meshes selection
+         */
+        set skipFrustumClipping(value: boolean);
+        get skipFrustumClipping(): boolean;
         private _forcePointsCloud;
         /**
          * Gets or sets a boolean indicating if all rendering must be done in point cloud
@@ -59557,6 +59563,10 @@ declare module "babylonjs/Materials/Node/Blocks/Dual/lightBlock" {
          * Gets the specular output component
          */
         get specularOutput(): NodeMaterialConnectionPoint;
+        /**
+         * Gets the shadow output component
+         */
+        get shadow(): NodeMaterialConnectionPoint;
         autoConfigure(material: NodeMaterial): void;
         prepareDefines(mesh: AbstractMesh, nodeMaterial: NodeMaterial, defines: NodeMaterialDefines): void;
         updateUniformsAndSamples(state: NodeMaterialBuildState, nodeMaterial: NodeMaterial, defines: NodeMaterialDefines, uniformBuffers: string[]): void;
@@ -104478,7 +104488,7 @@ declare module BABYLON {
          * @param scriptId defines the id of the script element
          * @returns a promise request object
          */
-        static LoadScriptAsync(scriptUrl: string, scriptId?: string): Promise<boolean>;
+        static LoadScriptAsync(scriptUrl: string, scriptId?: string): Promise<void>;
         /**
          * Loads a file from a blob
          * @param fileToLoad defines the blob to use
@@ -105480,6 +105490,12 @@ declare module BABYLON {
          */
         set forceWireframe(value: boolean);
         get forceWireframe(): boolean;
+        private _skipFrustumClipping;
+        /**
+         * Gets or sets a boolean indicating if we should skip the frustum clipping part of the active meshes selection
+         */
+        set skipFrustumClipping(value: boolean);
+        get skipFrustumClipping(): boolean;
         private _forcePointsCloud;
         /**
          * Gets or sets a boolean indicating if all rendering must be done in point cloud
@@ -127406,6 +127422,10 @@ declare module BABYLON {
          * Gets the specular output component
          */
         get specularOutput(): NodeMaterialConnectionPoint;
+        /**
+         * Gets the shadow output component
+         */
+        get shadow(): NodeMaterialConnectionPoint;
         autoConfigure(material: NodeMaterial): void;
         prepareDefines(mesh: AbstractMesh, nodeMaterial: NodeMaterial, defines: NodeMaterialDefines): void;
         updateUniformsAndSamples(state: NodeMaterialBuildState, nodeMaterial: NodeMaterial, defines: NodeMaterialDefines, uniformBuffers: string[]): void;

dist/preview release/viewer/babylonjs.loaders.module.d.ts

@@ -1,3 +1,34 @@
+declare module "babylonjs-loaders/glTF/glTFValidation" {
+    import * as GLTF2 from 'babylonjs-gltf2interface';
+    /**
+     * Configuration for glTF validation
+     */
+    export interface IGLTFValidationConfiguration {
+        /**
+         * The url of the glTF validator.
+         */
+        url: string;
+    }
+    /**
+     * glTF validation
+     */
+    export class GLTFValidation {
+        /**
+         * The configuration. Defaults to `{ url: "https://preview.babylonjs.com/gltf_validator.js" }`.
+         */
+        static Configuration: IGLTFValidationConfiguration;
+        private static _LoadScriptPromise;
+        /**
+         * Validate a glTF asset using the glTF-Validator.
+         * @param data The JSON of a glTF or the array buffer of a binary glTF
+         * @param rootUrl The root url for the glTF
+         * @param fileName The file name for the glTF
+         * @param getExternalResource The callback to get external resources for the glTF validator
+         * @returns A promise that resolves with the glTF validation results once complete
+         */
+        static ValidateAsync(data: string | ArrayBuffer, rootUrl: string, fileName: string, getExternalResource: (uri: string) => Promise<ArrayBuffer>): Promise<GLTF2.IGLTFValidationResults>;
+    }
+}
 declare module "babylonjs-loaders/glTF/glTFFileLoader" {
     import * as GLTF2 from "babylonjs-gltf2interface";
     import { Nullable } from "babylonjs/types";
@@ -324,7 +355,7 @@ declare module "babylonjs-loaders/glTF/glTFFileLoader" {
          * @returns a promise that resolves when the asset is completely loaded.
          */
         whenCompleteAsync(): Promise<void>;
-        private _validateAsync;
+        private _validate;
         private _getLoader;
         private _parseJson;
         private _unpackBinaryAsync;
@@ -2184,6 +2215,7 @@ declare module "babylonjs-loaders/glTF/2.0/index" {
 }
 declare module "babylonjs-loaders/glTF/index" {
     export * from "babylonjs-loaders/glTF/glTFFileLoader";
+    export * from "babylonjs-loaders/glTF/glTFValidation";
     import * as GLTF1 from "babylonjs-loaders/glTF/1.0/index";
     import * as GLTF2 from "babylonjs-loaders/glTF/2.0/index";
     export { GLTF1, GLTF2 };
@@ -2502,6 +2534,7 @@ declare module "babylonjs-loaders/index" {
 }
 declare module "babylonjs-loaders/legacy/legacy-glTF" {
     export * from "babylonjs-loaders/glTF/glTFFileLoader";
+    export * from "babylonjs-loaders/glTF/glTFValidation";
 }
 declare module "babylonjs-loaders/legacy/legacy-glTF1" {
     import * as GLTF1 from "babylonjs-loaders/glTF/1.0/index";
@@ -2543,6 +2576,36 @@ declare module "babylonjs-loaders" {
 }
 declare module BABYLON {
     /**
+     * Configuration for glTF validation
+     */
+    export interface IGLTFValidationConfiguration {
+        /**
+         * The url of the glTF validator.
+         */
+        url: string;
+    }
+    /**
+     * glTF validation
+     */
+    export class GLTFValidation {
+        /**
+         * The configuration. Defaults to `{ url: "https://preview.babylonjs.com/gltf_validator.js" }`.
+         */
+        static Configuration: IGLTFValidationConfiguration;
+        private static _LoadScriptPromise;
+        /**
+         * Validate a glTF asset using the glTF-Validator.
+         * @param data The JSON of a glTF or the array buffer of a binary glTF
+         * @param rootUrl The root url for the glTF
+         * @param fileName The file name for the glTF
+         * @param getExternalResource The callback to get external resources for the glTF validator
+         * @returns A promise that resolves with the glTF validation results once complete
+         */
+        static ValidateAsync(data: string | ArrayBuffer, rootUrl: string, fileName: string, getExternalResource: (uri: string) => Promise<ArrayBuffer>): Promise<BABYLON.GLTF2.IGLTFValidationResults>;
+    }
+}
+declare module BABYLON {
+    /**
      * Mode that determines the coordinate system to use.
      */
     export enum GLTFLoaderCoordinateSystemMode {
@@ -2851,7 +2914,7 @@ declare module BABYLON {
          * @returns a promise that resolves when the asset is completely loaded.
          */
         whenCompleteAsync(): Promise<void>;
-        private _validateAsync;
+        private _validate;
         private _getLoader;
         private _parseJson;
         private _unpackBinaryAsync;

sandbox/index.js

@@ -91,6 +91,7 @@ if (BABYLON.Engine.isSupported()) {
         dropdownContent.innerHTML = "";
         animationBar.style.display = "none";
         currentGroup = null;
+        babylonScene.skipFrustumClipping = true;
 
         if (babylonScene.animationGroups.length > 0) {
             animationBar.style.display = "flex";

src/Materials/Node/Blocks/Dual/lightBlock.ts

@@ -53,6 +53,7 @@ export class LightBlock extends NodeMaterialBlock {
 
         this.registerOutput("diffuseOutput", NodeMaterialBlockConnectionPointTypes.Color3, NodeMaterialBlockTargets.Fragment);
         this.registerOutput("specularOutput", NodeMaterialBlockConnectionPointTypes.Color3, NodeMaterialBlockTargets.Fragment);
+        this.registerOutput("shadow", NodeMaterialBlockConnectionPointTypes.Float, NodeMaterialBlockTargets.Fragment);
     }
 
     /**
@@ -126,6 +127,13 @@ export class LightBlock extends NodeMaterialBlock {
         return this._outputs[1];
     }
 
+    /**
+     * Gets the shadow output component
+     */
+    public get shadow(): NodeMaterialConnectionPoint {
+        return this._outputs[2];
+    }
+
     public autoConfigure(material: NodeMaterial) {
         if (!this.cameraPosition.isConnected) {
             let cameraPositionInput = material.getInputBlockByPredicate((b) => b.systemValue === NodeMaterialSystemValues.CameraPosition);
@@ -304,6 +312,10 @@ export class LightBlock extends NodeMaterialBlock {
             state.compilationString += this._declareOutput(specularOutput, state) + ` = specularBase${this.specularColor.isConnected ? " * " + this.specularColor.associatedVariableName : ""};\r\n`;
         }
 
+        if (this.shadow.hasEndpoints) {
+            state.compilationString += this._declareOutput(this.shadow, state) + ` = shadow;\r\n`;
+        }
+
         return this;
     }
 

src/Materials/Node/nodeMaterialBuildStateSharedData.ts

@@ -129,6 +129,7 @@ export class NodeMaterialBuildStateSharedData {
         this.variableNames["diffuseBase"] = 0;
         this.variableNames["specularBase"] = 0;
         this.variableNames["worldPos"] = 0;
+        this.variableNames["shadow"] = 0;
 
         // Exclude known varyings
         this.variableNames["vTBN"] = 0;

src/scene.ts

@@ -258,6 +258,20 @@ export class Scene extends AbstractScene implements IAnimatable {
         return this._forceWireframe;
     }
 
+    private _skipFrustumClipping = false;
+    /**
+     * Gets or sets a boolean indicating if we should skip the frustum clipping part of the active meshes selection
+     */
+    public set skipFrustumClipping(value: boolean) {
+        if (this._skipFrustumClipping === value) {
+            return;
+        }
+        this._skipFrustumClipping = value;
+    }
+    public get skipFrustumClipping(): boolean {
+        return this._skipFrustumClipping;
+    }
+
     private _forcePointsCloud = false;
     /**
      * Gets or sets a boolean indicating if all rendering must be done in point cloud
@@ -3203,7 +3217,7 @@ export class Scene extends AbstractScene implements IAnimatable {
     }
 
     private _evaluateSubMesh(subMesh: SubMesh, mesh: AbstractMesh, initialMesh: AbstractMesh): void {
-        if (initialMesh.hasInstances || initialMesh.isAnInstance || this.dispatchAllSubMeshesOfActiveMeshes || mesh.alwaysSelectAsActiveMesh || mesh.subMeshes.length === 1 || subMesh.isInFrustum(this._frustumPlanes)) {
+        if (initialMesh.hasInstances || initialMesh.isAnInstance || this.dispatchAllSubMeshesOfActiveMeshes || this._skipFrustumClipping || mesh.alwaysSelectAsActiveMesh || mesh.subMeshes.length === 1 || subMesh.isInFrustum(this._frustumPlanes)) {
             for (let step of this._evaluateSubMeshStage) {
                 step.action(mesh, subMesh);
             }
@@ -3442,7 +3456,7 @@ export class Scene extends AbstractScene implements IAnimatable {
 
             mesh._preActivate();
 
-            if (mesh.isVisible && mesh.visibility > 0 && ((mesh.layerMask & this.activeCamera.layerMask) !== 0) && (mesh.alwaysSelectAsActiveMesh || mesh.isInFrustum(this._frustumPlanes))) {
+            if (mesh.isVisible && mesh.visibility > 0 && ((mesh.layerMask & this.activeCamera.layerMask) !== 0) && (this._skipFrustumClipping || mesh.alwaysSelectAsActiveMesh || mesh.isInFrustum(this._frustumPlanes))) {
                 this._activeMeshes.push(mesh);
                 this.activeCamera._activeMeshes.push(mesh);