Nightly

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

@@ -724,6 +724,78 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 
 /***/ }),
 
+/***/ "./glTF/2.0/Extensions/KHR_materials_ior.ts":
+/*!**************************************************!*\
+  !*** ./glTF/2.0/Extensions/KHR_materials_ior.ts ***!
+  \**************************************************/
+/*! exports provided: KHR_materials_ior */
+/***/ (function(module, __webpack_exports__, __webpack_require__) {
+
+"use strict";
+__webpack_require__.r(__webpack_exports__);
+/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_ior", function() { return KHR_materials_ior; });
+/* 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");
+
+
+var NAME = "KHR_materials_ior";
+/**
+ * [Proposed Specification](https://github.com/KhronosGroup/glTF/pull/1718)
+ * !!! Experimental Extension Subject to Changes !!!
+ */
+var KHR_materials_ior = /** @class */ (function () {
+    /** @hidden */
+    function KHR_materials_ior(loader) {
+        /**
+         * The name of this extension.
+         */
+        this.name = NAME;
+        /**
+         * Defines a number that determines the order the extensions are applied.
+         */
+        this.order = 180;
+        this._loader = loader;
+        this.enabled = this._loader.isExtensionUsed(NAME);
+    }
+    /** @hidden */
+    KHR_materials_ior.prototype.dispose = function () {
+        delete this._loader;
+    };
+    /** @hidden */
+    KHR_materials_ior.prototype.loadMaterialPropertiesAsync = function (context, material, babylonMaterial) {
+        var _this = this;
+        return _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].LoadExtensionAsync(context, material, this.name, function (extensionContext, extension) {
+            var promises = new Array();
+            promises.push(_this._loader.loadMaterialPropertiesAsync(context, material, babylonMaterial));
+            promises.push(_this._loadIorPropertiesAsync(extensionContext, extension, babylonMaterial));
+            return Promise.all(promises).then(function () { });
+        });
+    };
+    KHR_materials_ior.prototype._loadIorPropertiesAsync = function (context, properties, babylonMaterial) {
+        if (!(babylonMaterial instanceof babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__["PBRMaterial"])) {
+            throw new Error(context + ": Material type not supported");
+        }
+        if (properties.ior !== undefined) {
+            babylonMaterial.indexOfRefraction = properties.ior;
+        }
+        else {
+            babylonMaterial.indexOfRefraction = KHR_materials_ior._DEFAULT_IOR;
+        }
+        return Promise.resolve();
+    };
+    /**
+     * Default ior Value from the spec.
+     */
+    KHR_materials_ior._DEFAULT_IOR = 1.5;
+    return KHR_materials_ior;
+}());
+
+_glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, function (loader) { return new KHR_materials_ior(loader); });
+
+
+/***/ }),
+
 /***/ "./glTF/2.0/Extensions/KHR_materials_pbrSpecularGlossiness.ts":
 /*!********************************************************************!*\
   !*** ./glTF/2.0/Extensions/KHR_materials_pbrSpecularGlossiness.ts ***!
@@ -916,10 +988,10 @@ __webpack_require__.r(__webpack_exports__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
 
+
 var NAME = "KHR_materials_specular";
 /**
- * [Proposed Specification](https://github.com/KhronosGroup/glTF/pull/1677)
- * [Playground Sample](https://www.babylonjs-playground.com/frame.html#BNIZX6#4)
+ * [Proposed Specification](https://github.com/KhronosGroup/glTF/pull/1719)
  * !!! Experimental Extension Subject to Changes !!!
  */
 var KHR_materials_specular = /** @class */ (function () {
@@ -954,14 +1026,20 @@ var KHR_materials_specular = /** @class */ (function () {
         if (!(babylonMaterial instanceof babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__["PBRMaterial"])) {
             throw new Error(context + ": Material type not supported");
         }
+        var promises = new Array();
         if (properties.specularFactor !== undefined) {
             babylonMaterial.metallicF0Factor = properties.specularFactor;
         }
+        if (properties.specularColorFactor !== undefined) {
+            babylonMaterial.metallicReflectanceColor = babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__["Color3"].FromArray(properties.specularColorFactor);
+        }
         if (properties.specularTexture) {
-            // This does not allow a separate sampler for it at the moment but is currently under discussion.
-            babylonMaterial.useMetallicF0FactorFromMetallicTexture = true;
+            promises.push(this._loader.loadTextureInfoAsync(context + "/specularTexture", properties.specularTexture, function (texture) {
+                texture.name = babylonMaterial.name + " (Specular F0 Color)";
+                babylonMaterial.metallicReflectanceTexture = texture;
+            }));
         }
-        return Promise.resolve();
+        return Promise.all(promises).then(function () { });
     };
     return KHR_materials_specular;
 }());
@@ -1892,7 +1970,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 /*!**************************************!*\
   !*** ./glTF/2.0/Extensions/index.ts ***!
   \**************************************/
-/*! exports provided: EXT_lights_image_based, EXT_mesh_gpu_instancing, KHR_draco_mesh_compression, KHR_lights, KHR_materials_pbrSpecularGlossiness, KHR_materials_unlit, KHR_materials_clearcoat, KHR_materials_sheen, KHR_materials_specular, KHR_mesh_quantization, KHR_texture_basisu, KHR_texture_transform, MSFT_audio_emitter, MSFT_lod, MSFT_minecraftMesh, MSFT_sRGBFactors, ExtrasAsMetadata */
+/*! exports provided: EXT_lights_image_based, EXT_mesh_gpu_instancing, KHR_draco_mesh_compression, KHR_lights, KHR_materials_pbrSpecularGlossiness, KHR_materials_unlit, KHR_materials_clearcoat, KHR_materials_sheen, KHR_materials_specular, KHR_materials_ior, KHR_mesh_quantization, KHR_texture_basisu, KHR_texture_transform, MSFT_audio_emitter, MSFT_lod, MSFT_minecraftMesh, MSFT_sRGBFactors, ExtrasAsMetadata */
 /***/ (function(module, __webpack_exports__, __webpack_require__) {
 
 "use strict";
@@ -1924,30 +2002,34 @@ __webpack_require__.r(__webpack_exports__);
 /* harmony import */ var _KHR_materials_specular__WEBPACK_IMPORTED_MODULE_8__ = __webpack_require__(/*! ./KHR_materials_specular */ "./glTF/2.0/Extensions/KHR_materials_specular.ts");
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_specular", function() { return _KHR_materials_specular__WEBPACK_IMPORTED_MODULE_8__["KHR_materials_specular"]; });
 
-/* harmony import */ var _KHR_mesh_quantization__WEBPACK_IMPORTED_MODULE_9__ = __webpack_require__(/*! ./KHR_mesh_quantization */ "./glTF/2.0/Extensions/KHR_mesh_quantization.ts");
-/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_mesh_quantization", function() { return _KHR_mesh_quantization__WEBPACK_IMPORTED_MODULE_9__["KHR_mesh_quantization"]; });
+/* harmony import */ var _KHR_materials_ior__WEBPACK_IMPORTED_MODULE_9__ = __webpack_require__(/*! ./KHR_materials_ior */ "./glTF/2.0/Extensions/KHR_materials_ior.ts");
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_ior", function() { return _KHR_materials_ior__WEBPACK_IMPORTED_MODULE_9__["KHR_materials_ior"]; });
 
-/* harmony import */ var _KHR_texture_basisu__WEBPACK_IMPORTED_MODULE_10__ = __webpack_require__(/*! ./KHR_texture_basisu */ "./glTF/2.0/Extensions/KHR_texture_basisu.ts");
-/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_texture_basisu", function() { return _KHR_texture_basisu__WEBPACK_IMPORTED_MODULE_10__["KHR_texture_basisu"]; });
+/* harmony import */ var _KHR_mesh_quantization__WEBPACK_IMPORTED_MODULE_10__ = __webpack_require__(/*! ./KHR_mesh_quantization */ "./glTF/2.0/Extensions/KHR_mesh_quantization.ts");
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_mesh_quantization", function() { return _KHR_mesh_quantization__WEBPACK_IMPORTED_MODULE_10__["KHR_mesh_quantization"]; });
 
-/* harmony import */ var _KHR_texture_transform__WEBPACK_IMPORTED_MODULE_11__ = __webpack_require__(/*! ./KHR_texture_transform */ "./glTF/2.0/Extensions/KHR_texture_transform.ts");
-/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_texture_transform", function() { return _KHR_texture_transform__WEBPACK_IMPORTED_MODULE_11__["KHR_texture_transform"]; });
+/* harmony import */ var _KHR_texture_basisu__WEBPACK_IMPORTED_MODULE_11__ = __webpack_require__(/*! ./KHR_texture_basisu */ "./glTF/2.0/Extensions/KHR_texture_basisu.ts");
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_texture_basisu", function() { return _KHR_texture_basisu__WEBPACK_IMPORTED_MODULE_11__["KHR_texture_basisu"]; });
 
-/* harmony import */ var _MSFT_audio_emitter__WEBPACK_IMPORTED_MODULE_12__ = __webpack_require__(/*! ./MSFT_audio_emitter */ "./glTF/2.0/Extensions/MSFT_audio_emitter.ts");
-/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "MSFT_audio_emitter", function() { return _MSFT_audio_emitter__WEBPACK_IMPORTED_MODULE_12__["MSFT_audio_emitter"]; });
+/* harmony import */ var _KHR_texture_transform__WEBPACK_IMPORTED_MODULE_12__ = __webpack_require__(/*! ./KHR_texture_transform */ "./glTF/2.0/Extensions/KHR_texture_transform.ts");
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_texture_transform", function() { return _KHR_texture_transform__WEBPACK_IMPORTED_MODULE_12__["KHR_texture_transform"]; });
 
-/* harmony import */ var _MSFT_lod__WEBPACK_IMPORTED_MODULE_13__ = __webpack_require__(/*! ./MSFT_lod */ "./glTF/2.0/Extensions/MSFT_lod.ts");
-/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "MSFT_lod", function() { return _MSFT_lod__WEBPACK_IMPORTED_MODULE_13__["MSFT_lod"]; });
+/* harmony import */ var _MSFT_audio_emitter__WEBPACK_IMPORTED_MODULE_13__ = __webpack_require__(/*! ./MSFT_audio_emitter */ "./glTF/2.0/Extensions/MSFT_audio_emitter.ts");
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "MSFT_audio_emitter", function() { return _MSFT_audio_emitter__WEBPACK_IMPORTED_MODULE_13__["MSFT_audio_emitter"]; });
 
-/* harmony import */ var _MSFT_minecraftMesh__WEBPACK_IMPORTED_MODULE_14__ = __webpack_require__(/*! ./MSFT_minecraftMesh */ "./glTF/2.0/Extensions/MSFT_minecraftMesh.ts");
-/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "MSFT_minecraftMesh", function() { return _MSFT_minecraftMesh__WEBPACK_IMPORTED_MODULE_14__["MSFT_minecraftMesh"]; });
+/* harmony import */ var _MSFT_lod__WEBPACK_IMPORTED_MODULE_14__ = __webpack_require__(/*! ./MSFT_lod */ "./glTF/2.0/Extensions/MSFT_lod.ts");
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "MSFT_lod", function() { return _MSFT_lod__WEBPACK_IMPORTED_MODULE_14__["MSFT_lod"]; });
 
-/* harmony import */ var _MSFT_sRGBFactors__WEBPACK_IMPORTED_MODULE_15__ = __webpack_require__(/*! ./MSFT_sRGBFactors */ "./glTF/2.0/Extensions/MSFT_sRGBFactors.ts");
-/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "MSFT_sRGBFactors", function() { return _MSFT_sRGBFactors__WEBPACK_IMPORTED_MODULE_15__["MSFT_sRGBFactors"]; });
+/* harmony import */ var _MSFT_minecraftMesh__WEBPACK_IMPORTED_MODULE_15__ = __webpack_require__(/*! ./MSFT_minecraftMesh */ "./glTF/2.0/Extensions/MSFT_minecraftMesh.ts");
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "MSFT_minecraftMesh", function() { return _MSFT_minecraftMesh__WEBPACK_IMPORTED_MODULE_15__["MSFT_minecraftMesh"]; });
 
-/* harmony import */ var _ExtrasAsMetadata__WEBPACK_IMPORTED_MODULE_16__ = __webpack_require__(/*! ./ExtrasAsMetadata */ "./glTF/2.0/Extensions/ExtrasAsMetadata.ts");
-/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "ExtrasAsMetadata", function() { return _ExtrasAsMetadata__WEBPACK_IMPORTED_MODULE_16__["ExtrasAsMetadata"]; });
+/* harmony import */ var _MSFT_sRGBFactors__WEBPACK_IMPORTED_MODULE_16__ = __webpack_require__(/*! ./MSFT_sRGBFactors */ "./glTF/2.0/Extensions/MSFT_sRGBFactors.ts");
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "MSFT_sRGBFactors", function() { return _MSFT_sRGBFactors__WEBPACK_IMPORTED_MODULE_16__["MSFT_sRGBFactors"]; });
 
+/* harmony import */ var _ExtrasAsMetadata__WEBPACK_IMPORTED_MODULE_17__ = __webpack_require__(/*! ./ExtrasAsMetadata */ "./glTF/2.0/Extensions/ExtrasAsMetadata.ts");
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "ExtrasAsMetadata", function() { return _ExtrasAsMetadata__WEBPACK_IMPORTED_MODULE_17__["ExtrasAsMetadata"]; });
+
+
 
 
 
@@ -4128,7 +4210,7 @@ _glTFFileLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFFileLoader"]._CreateGLTF2Loade
 /*!***************************!*\
   !*** ./glTF/2.0/index.ts ***!
   \***************************/
-/*! exports provided: ArrayItem, GLTFLoader, EXT_lights_image_based, EXT_mesh_gpu_instancing, KHR_draco_mesh_compression, KHR_lights, KHR_materials_pbrSpecularGlossiness, KHR_materials_unlit, KHR_materials_clearcoat, KHR_materials_sheen, KHR_materials_specular, KHR_mesh_quantization, KHR_texture_basisu, KHR_texture_transform, MSFT_audio_emitter, MSFT_lod, MSFT_minecraftMesh, MSFT_sRGBFactors, ExtrasAsMetadata */
+/*! exports provided: ArrayItem, GLTFLoader, EXT_lights_image_based, EXT_mesh_gpu_instancing, KHR_draco_mesh_compression, KHR_lights, KHR_materials_pbrSpecularGlossiness, KHR_materials_unlit, KHR_materials_clearcoat, KHR_materials_sheen, KHR_materials_specular, KHR_materials_ior, KHR_mesh_quantization, KHR_texture_basisu, KHR_texture_transform, MSFT_audio_emitter, MSFT_lod, MSFT_minecraftMesh, MSFT_sRGBFactors, ExtrasAsMetadata */
 /***/ (function(module, __webpack_exports__, __webpack_require__) {
 
 "use strict";
@@ -4157,6 +4239,8 @@ __webpack_require__.r(__webpack_exports__);
 
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_specular", function() { return _Extensions__WEBPACK_IMPORTED_MODULE_1__["KHR_materials_specular"]; });
 
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_ior", function() { return _Extensions__WEBPACK_IMPORTED_MODULE_1__["KHR_materials_ior"]; });
+
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_mesh_quantization", function() { return _Extensions__WEBPACK_IMPORTED_MODULE_1__["KHR_mesh_quantization"]; });
 
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_texture_basisu", function() { return _Extensions__WEBPACK_IMPORTED_MODULE_1__["KHR_texture_basisu"]; });

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

@@ -3304,6 +3304,78 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 
 /***/ }),
 
+/***/ "./glTF/2.0/Extensions/KHR_materials_ior.ts":
+/*!**************************************************!*\
+  !*** ./glTF/2.0/Extensions/KHR_materials_ior.ts ***!
+  \**************************************************/
+/*! exports provided: KHR_materials_ior */
+/***/ (function(module, __webpack_exports__, __webpack_require__) {
+
+"use strict";
+__webpack_require__.r(__webpack_exports__);
+/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_ior", function() { return KHR_materials_ior; });
+/* 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");
+
+
+var NAME = "KHR_materials_ior";
+/**
+ * [Proposed Specification](https://github.com/KhronosGroup/glTF/pull/1718)
+ * !!! Experimental Extension Subject to Changes !!!
+ */
+var KHR_materials_ior = /** @class */ (function () {
+    /** @hidden */
+    function KHR_materials_ior(loader) {
+        /**
+         * The name of this extension.
+         */
+        this.name = NAME;
+        /**
+         * Defines a number that determines the order the extensions are applied.
+         */
+        this.order = 180;
+        this._loader = loader;
+        this.enabled = this._loader.isExtensionUsed(NAME);
+    }
+    /** @hidden */
+    KHR_materials_ior.prototype.dispose = function () {
+        delete this._loader;
+    };
+    /** @hidden */
+    KHR_materials_ior.prototype.loadMaterialPropertiesAsync = function (context, material, babylonMaterial) {
+        var _this = this;
+        return _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].LoadExtensionAsync(context, material, this.name, function (extensionContext, extension) {
+            var promises = new Array();
+            promises.push(_this._loader.loadMaterialPropertiesAsync(context, material, babylonMaterial));
+            promises.push(_this._loadIorPropertiesAsync(extensionContext, extension, babylonMaterial));
+            return Promise.all(promises).then(function () { });
+        });
+    };
+    KHR_materials_ior.prototype._loadIorPropertiesAsync = function (context, properties, babylonMaterial) {
+        if (!(babylonMaterial instanceof babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__["PBRMaterial"])) {
+            throw new Error(context + ": Material type not supported");
+        }
+        if (properties.ior !== undefined) {
+            babylonMaterial.indexOfRefraction = properties.ior;
+        }
+        else {
+            babylonMaterial.indexOfRefraction = KHR_materials_ior._DEFAULT_IOR;
+        }
+        return Promise.resolve();
+    };
+    /**
+     * Default ior Value from the spec.
+     */
+    KHR_materials_ior._DEFAULT_IOR = 1.5;
+    return KHR_materials_ior;
+}());
+
+_glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, function (loader) { return new KHR_materials_ior(loader); });
+
+
+/***/ }),
+
 /***/ "./glTF/2.0/Extensions/KHR_materials_pbrSpecularGlossiness.ts":
 /*!********************************************************************!*\
   !*** ./glTF/2.0/Extensions/KHR_materials_pbrSpecularGlossiness.ts ***!
@@ -3496,10 +3568,10 @@ __webpack_require__.r(__webpack_exports__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
 
+
 var NAME = "KHR_materials_specular";
 /**
- * [Proposed Specification](https://github.com/KhronosGroup/glTF/pull/1677)
- * [Playground Sample](https://www.babylonjs-playground.com/frame.html#BNIZX6#4)
+ * [Proposed Specification](https://github.com/KhronosGroup/glTF/pull/1719)
  * !!! Experimental Extension Subject to Changes !!!
  */
 var KHR_materials_specular = /** @class */ (function () {
@@ -3534,14 +3606,20 @@ var KHR_materials_specular = /** @class */ (function () {
         if (!(babylonMaterial instanceof babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__["PBRMaterial"])) {
             throw new Error(context + ": Material type not supported");
         }
+        var promises = new Array();
         if (properties.specularFactor !== undefined) {
             babylonMaterial.metallicF0Factor = properties.specularFactor;
         }
+        if (properties.specularColorFactor !== undefined) {
+            babylonMaterial.metallicReflectanceColor = babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__["Color3"].FromArray(properties.specularColorFactor);
+        }
         if (properties.specularTexture) {
-            // This does not allow a separate sampler for it at the moment but is currently under discussion.
-            babylonMaterial.useMetallicF0FactorFromMetallicTexture = true;
+            promises.push(this._loader.loadTextureInfoAsync(context + "/specularTexture", properties.specularTexture, function (texture) {
+                texture.name = babylonMaterial.name + " (Specular F0 Color)";
+                babylonMaterial.metallicReflectanceTexture = texture;
+            }));
         }
-        return Promise.resolve();
+        return Promise.all(promises).then(function () { });
     };
     return KHR_materials_specular;
 }());
@@ -4472,7 +4550,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 /*!**************************************!*\
   !*** ./glTF/2.0/Extensions/index.ts ***!
   \**************************************/
-/*! exports provided: EXT_lights_image_based, EXT_mesh_gpu_instancing, KHR_draco_mesh_compression, KHR_lights, KHR_materials_pbrSpecularGlossiness, KHR_materials_unlit, KHR_materials_clearcoat, KHR_materials_sheen, KHR_materials_specular, KHR_mesh_quantization, KHR_texture_basisu, KHR_texture_transform, MSFT_audio_emitter, MSFT_lod, MSFT_minecraftMesh, MSFT_sRGBFactors, ExtrasAsMetadata */
+/*! exports provided: EXT_lights_image_based, EXT_mesh_gpu_instancing, KHR_draco_mesh_compression, KHR_lights, KHR_materials_pbrSpecularGlossiness, KHR_materials_unlit, KHR_materials_clearcoat, KHR_materials_sheen, KHR_materials_specular, KHR_materials_ior, KHR_mesh_quantization, KHR_texture_basisu, KHR_texture_transform, MSFT_audio_emitter, MSFT_lod, MSFT_minecraftMesh, MSFT_sRGBFactors, ExtrasAsMetadata */
 /***/ (function(module, __webpack_exports__, __webpack_require__) {
 
 "use strict";
@@ -4504,30 +4582,34 @@ __webpack_require__.r(__webpack_exports__);
 /* harmony import */ var _KHR_materials_specular__WEBPACK_IMPORTED_MODULE_8__ = __webpack_require__(/*! ./KHR_materials_specular */ "./glTF/2.0/Extensions/KHR_materials_specular.ts");
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_specular", function() { return _KHR_materials_specular__WEBPACK_IMPORTED_MODULE_8__["KHR_materials_specular"]; });
 
-/* harmony import */ var _KHR_mesh_quantization__WEBPACK_IMPORTED_MODULE_9__ = __webpack_require__(/*! ./KHR_mesh_quantization */ "./glTF/2.0/Extensions/KHR_mesh_quantization.ts");
-/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_mesh_quantization", function() { return _KHR_mesh_quantization__WEBPACK_IMPORTED_MODULE_9__["KHR_mesh_quantization"]; });
+/* harmony import */ var _KHR_materials_ior__WEBPACK_IMPORTED_MODULE_9__ = __webpack_require__(/*! ./KHR_materials_ior */ "./glTF/2.0/Extensions/KHR_materials_ior.ts");
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_ior", function() { return _KHR_materials_ior__WEBPACK_IMPORTED_MODULE_9__["KHR_materials_ior"]; });
 
-/* harmony import */ var _KHR_texture_basisu__WEBPACK_IMPORTED_MODULE_10__ = __webpack_require__(/*! ./KHR_texture_basisu */ "./glTF/2.0/Extensions/KHR_texture_basisu.ts");
-/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_texture_basisu", function() { return _KHR_texture_basisu__WEBPACK_IMPORTED_MODULE_10__["KHR_texture_basisu"]; });
+/* harmony import */ var _KHR_mesh_quantization__WEBPACK_IMPORTED_MODULE_10__ = __webpack_require__(/*! ./KHR_mesh_quantization */ "./glTF/2.0/Extensions/KHR_mesh_quantization.ts");
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_mesh_quantization", function() { return _KHR_mesh_quantization__WEBPACK_IMPORTED_MODULE_10__["KHR_mesh_quantization"]; });
 
-/* harmony import */ var _KHR_texture_transform__WEBPACK_IMPORTED_MODULE_11__ = __webpack_require__(/*! ./KHR_texture_transform */ "./glTF/2.0/Extensions/KHR_texture_transform.ts");
-/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_texture_transform", function() { return _KHR_texture_transform__WEBPACK_IMPORTED_MODULE_11__["KHR_texture_transform"]; });
+/* harmony import */ var _KHR_texture_basisu__WEBPACK_IMPORTED_MODULE_11__ = __webpack_require__(/*! ./KHR_texture_basisu */ "./glTF/2.0/Extensions/KHR_texture_basisu.ts");
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_texture_basisu", function() { return _KHR_texture_basisu__WEBPACK_IMPORTED_MODULE_11__["KHR_texture_basisu"]; });
 
-/* harmony import */ var _MSFT_audio_emitter__WEBPACK_IMPORTED_MODULE_12__ = __webpack_require__(/*! ./MSFT_audio_emitter */ "./glTF/2.0/Extensions/MSFT_audio_emitter.ts");
-/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "MSFT_audio_emitter", function() { return _MSFT_audio_emitter__WEBPACK_IMPORTED_MODULE_12__["MSFT_audio_emitter"]; });
+/* harmony import */ var _KHR_texture_transform__WEBPACK_IMPORTED_MODULE_12__ = __webpack_require__(/*! ./KHR_texture_transform */ "./glTF/2.0/Extensions/KHR_texture_transform.ts");
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_texture_transform", function() { return _KHR_texture_transform__WEBPACK_IMPORTED_MODULE_12__["KHR_texture_transform"]; });
 
-/* harmony import */ var _MSFT_lod__WEBPACK_IMPORTED_MODULE_13__ = __webpack_require__(/*! ./MSFT_lod */ "./glTF/2.0/Extensions/MSFT_lod.ts");
-/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "MSFT_lod", function() { return _MSFT_lod__WEBPACK_IMPORTED_MODULE_13__["MSFT_lod"]; });
+/* harmony import */ var _MSFT_audio_emitter__WEBPACK_IMPORTED_MODULE_13__ = __webpack_require__(/*! ./MSFT_audio_emitter */ "./glTF/2.0/Extensions/MSFT_audio_emitter.ts");
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "MSFT_audio_emitter", function() { return _MSFT_audio_emitter__WEBPACK_IMPORTED_MODULE_13__["MSFT_audio_emitter"]; });
 
-/* harmony import */ var _MSFT_minecraftMesh__WEBPACK_IMPORTED_MODULE_14__ = __webpack_require__(/*! ./MSFT_minecraftMesh */ "./glTF/2.0/Extensions/MSFT_minecraftMesh.ts");
-/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "MSFT_minecraftMesh", function() { return _MSFT_minecraftMesh__WEBPACK_IMPORTED_MODULE_14__["MSFT_minecraftMesh"]; });
+/* harmony import */ var _MSFT_lod__WEBPACK_IMPORTED_MODULE_14__ = __webpack_require__(/*! ./MSFT_lod */ "./glTF/2.0/Extensions/MSFT_lod.ts");
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "MSFT_lod", function() { return _MSFT_lod__WEBPACK_IMPORTED_MODULE_14__["MSFT_lod"]; });
 
-/* harmony import */ var _MSFT_sRGBFactors__WEBPACK_IMPORTED_MODULE_15__ = __webpack_require__(/*! ./MSFT_sRGBFactors */ "./glTF/2.0/Extensions/MSFT_sRGBFactors.ts");
-/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "MSFT_sRGBFactors", function() { return _MSFT_sRGBFactors__WEBPACK_IMPORTED_MODULE_15__["MSFT_sRGBFactors"]; });
+/* harmony import */ var _MSFT_minecraftMesh__WEBPACK_IMPORTED_MODULE_15__ = __webpack_require__(/*! ./MSFT_minecraftMesh */ "./glTF/2.0/Extensions/MSFT_minecraftMesh.ts");
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "MSFT_minecraftMesh", function() { return _MSFT_minecraftMesh__WEBPACK_IMPORTED_MODULE_15__["MSFT_minecraftMesh"]; });
 
-/* harmony import */ var _ExtrasAsMetadata__WEBPACK_IMPORTED_MODULE_16__ = __webpack_require__(/*! ./ExtrasAsMetadata */ "./glTF/2.0/Extensions/ExtrasAsMetadata.ts");
-/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "ExtrasAsMetadata", function() { return _ExtrasAsMetadata__WEBPACK_IMPORTED_MODULE_16__["ExtrasAsMetadata"]; });
+/* harmony import */ var _MSFT_sRGBFactors__WEBPACK_IMPORTED_MODULE_16__ = __webpack_require__(/*! ./MSFT_sRGBFactors */ "./glTF/2.0/Extensions/MSFT_sRGBFactors.ts");
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "MSFT_sRGBFactors", function() { return _MSFT_sRGBFactors__WEBPACK_IMPORTED_MODULE_16__["MSFT_sRGBFactors"]; });
 
+/* harmony import */ var _ExtrasAsMetadata__WEBPACK_IMPORTED_MODULE_17__ = __webpack_require__(/*! ./ExtrasAsMetadata */ "./glTF/2.0/Extensions/ExtrasAsMetadata.ts");
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "ExtrasAsMetadata", function() { return _ExtrasAsMetadata__WEBPACK_IMPORTED_MODULE_17__["ExtrasAsMetadata"]; });
+
+
 
 
 
@@ -6708,7 +6790,7 @@ _glTFFileLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFFileLoader"]._CreateGLTF2Loade
 /*!***************************!*\
   !*** ./glTF/2.0/index.ts ***!
   \***************************/
-/*! exports provided: ArrayItem, GLTFLoader, EXT_lights_image_based, EXT_mesh_gpu_instancing, KHR_draco_mesh_compression, KHR_lights, KHR_materials_pbrSpecularGlossiness, KHR_materials_unlit, KHR_materials_clearcoat, KHR_materials_sheen, KHR_materials_specular, KHR_mesh_quantization, KHR_texture_basisu, KHR_texture_transform, MSFT_audio_emitter, MSFT_lod, MSFT_minecraftMesh, MSFT_sRGBFactors, ExtrasAsMetadata */
+/*! exports provided: ArrayItem, GLTFLoader, EXT_lights_image_based, EXT_mesh_gpu_instancing, KHR_draco_mesh_compression, KHR_lights, KHR_materials_pbrSpecularGlossiness, KHR_materials_unlit, KHR_materials_clearcoat, KHR_materials_sheen, KHR_materials_specular, KHR_materials_ior, KHR_mesh_quantization, KHR_texture_basisu, KHR_texture_transform, MSFT_audio_emitter, MSFT_lod, MSFT_minecraftMesh, MSFT_sRGBFactors, ExtrasAsMetadata */
 /***/ (function(module, __webpack_exports__, __webpack_require__) {
 
 "use strict";
@@ -6737,6 +6819,8 @@ __webpack_require__.r(__webpack_exports__);
 
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_specular", function() { return _Extensions__WEBPACK_IMPORTED_MODULE_1__["KHR_materials_specular"]; });
 
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_ior", function() { return _Extensions__WEBPACK_IMPORTED_MODULE_1__["KHR_materials_ior"]; });
+
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_mesh_quantization", function() { return _Extensions__WEBPACK_IMPORTED_MODULE_1__["KHR_mesh_quantization"]; });
 
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_texture_basisu", function() { return _Extensions__WEBPACK_IMPORTED_MODULE_1__["KHR_texture_basisu"]; });

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

@@ -1850,8 +1850,7 @@ declare module BABYLON.GLTF2.Loader.Extensions {
 }
 declare module BABYLON.GLTF2.Loader.Extensions {
     /**
-     * [Proposed Specification](https://github.com/KhronosGroup/glTF/pull/1677)
-     * [Playground Sample](https://www.babylonjs-playground.com/frame.html#BNIZX6#4)
+     * [Proposed Specification](https://github.com/KhronosGroup/glTF/pull/1719)
      * !!! Experimental Extension Subject to Changes !!!
      */
     export class KHR_materials_specular implements IGLTFLoaderExtension {
@@ -1879,6 +1878,38 @@ declare module BABYLON.GLTF2.Loader.Extensions {
 }
 declare module BABYLON.GLTF2.Loader.Extensions {
     /**
+     * [Proposed Specification](https://github.com/KhronosGroup/glTF/pull/1718)
+     * !!! Experimental Extension Subject to Changes !!!
+     */
+    export class KHR_materials_ior implements IGLTFLoaderExtension {
+        /**
+         * Default ior Value from the spec.
+         */
+        private static readonly _DEFAULT_IOR;
+        /**
+         * The name of this extension.
+         */
+        readonly name: string;
+        /**
+         * Defines whether this extension is enabled.
+         */
+        enabled: boolean;
+        /**
+         * Defines a number that determines the order the extensions are applied.
+         */
+        order: number;
+        private _loader;
+        /** @hidden */
+        constructor(loader: GLTFLoader);
+        /** @hidden */
+        dispose(): void;
+        /** @hidden */
+        loadMaterialPropertiesAsync(context: string, material: IMaterial, babylonMaterial: Material): Nullable<Promise<void>>;
+        private _loadIorPropertiesAsync;
+    }
+}
+declare module BABYLON.GLTF2.Loader.Extensions {
+    /**
      * [Specification](https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_mesh_quantization)
      */
     export class KHR_mesh_quantization implements IGLTFLoaderExtension {

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

@@ -4684,6 +4684,78 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 
 /***/ }),
 
+/***/ "./glTF/2.0/Extensions/KHR_materials_ior.ts":
+/*!**************************************************!*\
+  !*** ./glTF/2.0/Extensions/KHR_materials_ior.ts ***!
+  \**************************************************/
+/*! exports provided: KHR_materials_ior */
+/***/ (function(module, __webpack_exports__, __webpack_require__) {
+
+"use strict";
+__webpack_require__.r(__webpack_exports__);
+/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_ior", function() { return KHR_materials_ior; });
+/* 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");
+
+
+var NAME = "KHR_materials_ior";
+/**
+ * [Proposed Specification](https://github.com/KhronosGroup/glTF/pull/1718)
+ * !!! Experimental Extension Subject to Changes !!!
+ */
+var KHR_materials_ior = /** @class */ (function () {
+    /** @hidden */
+    function KHR_materials_ior(loader) {
+        /**
+         * The name of this extension.
+         */
+        this.name = NAME;
+        /**
+         * Defines a number that determines the order the extensions are applied.
+         */
+        this.order = 180;
+        this._loader = loader;
+        this.enabled = this._loader.isExtensionUsed(NAME);
+    }
+    /** @hidden */
+    KHR_materials_ior.prototype.dispose = function () {
+        delete this._loader;
+    };
+    /** @hidden */
+    KHR_materials_ior.prototype.loadMaterialPropertiesAsync = function (context, material, babylonMaterial) {
+        var _this = this;
+        return _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].LoadExtensionAsync(context, material, this.name, function (extensionContext, extension) {
+            var promises = new Array();
+            promises.push(_this._loader.loadMaterialPropertiesAsync(context, material, babylonMaterial));
+            promises.push(_this._loadIorPropertiesAsync(extensionContext, extension, babylonMaterial));
+            return Promise.all(promises).then(function () { });
+        });
+    };
+    KHR_materials_ior.prototype._loadIorPropertiesAsync = function (context, properties, babylonMaterial) {
+        if (!(babylonMaterial instanceof babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__["PBRMaterial"])) {
+            throw new Error(context + ": Material type not supported");
+        }
+        if (properties.ior !== undefined) {
+            babylonMaterial.indexOfRefraction = properties.ior;
+        }
+        else {
+            babylonMaterial.indexOfRefraction = KHR_materials_ior._DEFAULT_IOR;
+        }
+        return Promise.resolve();
+    };
+    /**
+     * Default ior Value from the spec.
+     */
+    KHR_materials_ior._DEFAULT_IOR = 1.5;
+    return KHR_materials_ior;
+}());
+
+_glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, function (loader) { return new KHR_materials_ior(loader); });
+
+
+/***/ }),
+
 /***/ "./glTF/2.0/Extensions/KHR_materials_pbrSpecularGlossiness.ts":
 /*!********************************************************************!*\
   !*** ./glTF/2.0/Extensions/KHR_materials_pbrSpecularGlossiness.ts ***!
@@ -4876,10 +4948,10 @@ __webpack_require__.r(__webpack_exports__);
 /* harmony import */ var _glTFLoader__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../glTFLoader */ "./glTF/2.0/glTFLoader.ts");
 
 
+
 var NAME = "KHR_materials_specular";
 /**
- * [Proposed Specification](https://github.com/KhronosGroup/glTF/pull/1677)
- * [Playground Sample](https://www.babylonjs-playground.com/frame.html#BNIZX6#4)
+ * [Proposed Specification](https://github.com/KhronosGroup/glTF/pull/1719)
  * !!! Experimental Extension Subject to Changes !!!
  */
 var KHR_materials_specular = /** @class */ (function () {
@@ -4914,14 +4986,20 @@ var KHR_materials_specular = /** @class */ (function () {
         if (!(babylonMaterial instanceof babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__["PBRMaterial"])) {
             throw new Error(context + ": Material type not supported");
         }
+        var promises = new Array();
         if (properties.specularFactor !== undefined) {
             babylonMaterial.metallicF0Factor = properties.specularFactor;
         }
+        if (properties.specularColorFactor !== undefined) {
+            babylonMaterial.metallicReflectanceColor = babylonjs_Materials_PBR_pbrMaterial__WEBPACK_IMPORTED_MODULE_0__["Color3"].FromArray(properties.specularColorFactor);
+        }
         if (properties.specularTexture) {
-            // This does not allow a separate sampler for it at the moment but is currently under discussion.
-            babylonMaterial.useMetallicF0FactorFromMetallicTexture = true;
+            promises.push(this._loader.loadTextureInfoAsync(context + "/specularTexture", properties.specularTexture, function (texture) {
+                texture.name = babylonMaterial.name + " (Specular F0 Color)";
+                babylonMaterial.metallicReflectanceTexture = texture;
+            }));
         }
-        return Promise.resolve();
+        return Promise.all(promises).then(function () { });
     };
     return KHR_materials_specular;
 }());
@@ -5852,7 +5930,7 @@ _glTFLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFLoader"].RegisterExtension(NAME, f
 /*!**************************************!*\
   !*** ./glTF/2.0/Extensions/index.ts ***!
   \**************************************/
-/*! exports provided: EXT_lights_image_based, EXT_mesh_gpu_instancing, KHR_draco_mesh_compression, KHR_lights, KHR_materials_pbrSpecularGlossiness, KHR_materials_unlit, KHR_materials_clearcoat, KHR_materials_sheen, KHR_materials_specular, KHR_mesh_quantization, KHR_texture_basisu, KHR_texture_transform, MSFT_audio_emitter, MSFT_lod, MSFT_minecraftMesh, MSFT_sRGBFactors, ExtrasAsMetadata */
+/*! exports provided: EXT_lights_image_based, EXT_mesh_gpu_instancing, KHR_draco_mesh_compression, KHR_lights, KHR_materials_pbrSpecularGlossiness, KHR_materials_unlit, KHR_materials_clearcoat, KHR_materials_sheen, KHR_materials_specular, KHR_materials_ior, KHR_mesh_quantization, KHR_texture_basisu, KHR_texture_transform, MSFT_audio_emitter, MSFT_lod, MSFT_minecraftMesh, MSFT_sRGBFactors, ExtrasAsMetadata */
 /***/ (function(module, __webpack_exports__, __webpack_require__) {
 
 "use strict";
@@ -5884,30 +5962,34 @@ __webpack_require__.r(__webpack_exports__);
 /* harmony import */ var _KHR_materials_specular__WEBPACK_IMPORTED_MODULE_8__ = __webpack_require__(/*! ./KHR_materials_specular */ "./glTF/2.0/Extensions/KHR_materials_specular.ts");
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_specular", function() { return _KHR_materials_specular__WEBPACK_IMPORTED_MODULE_8__["KHR_materials_specular"]; });
 
-/* harmony import */ var _KHR_mesh_quantization__WEBPACK_IMPORTED_MODULE_9__ = __webpack_require__(/*! ./KHR_mesh_quantization */ "./glTF/2.0/Extensions/KHR_mesh_quantization.ts");
-/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_mesh_quantization", function() { return _KHR_mesh_quantization__WEBPACK_IMPORTED_MODULE_9__["KHR_mesh_quantization"]; });
+/* harmony import */ var _KHR_materials_ior__WEBPACK_IMPORTED_MODULE_9__ = __webpack_require__(/*! ./KHR_materials_ior */ "./glTF/2.0/Extensions/KHR_materials_ior.ts");
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_ior", function() { return _KHR_materials_ior__WEBPACK_IMPORTED_MODULE_9__["KHR_materials_ior"]; });
 
-/* harmony import */ var _KHR_texture_basisu__WEBPACK_IMPORTED_MODULE_10__ = __webpack_require__(/*! ./KHR_texture_basisu */ "./glTF/2.0/Extensions/KHR_texture_basisu.ts");
-/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_texture_basisu", function() { return _KHR_texture_basisu__WEBPACK_IMPORTED_MODULE_10__["KHR_texture_basisu"]; });
+/* harmony import */ var _KHR_mesh_quantization__WEBPACK_IMPORTED_MODULE_10__ = __webpack_require__(/*! ./KHR_mesh_quantization */ "./glTF/2.0/Extensions/KHR_mesh_quantization.ts");
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_mesh_quantization", function() { return _KHR_mesh_quantization__WEBPACK_IMPORTED_MODULE_10__["KHR_mesh_quantization"]; });
 
-/* harmony import */ var _KHR_texture_transform__WEBPACK_IMPORTED_MODULE_11__ = __webpack_require__(/*! ./KHR_texture_transform */ "./glTF/2.0/Extensions/KHR_texture_transform.ts");
-/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_texture_transform", function() { return _KHR_texture_transform__WEBPACK_IMPORTED_MODULE_11__["KHR_texture_transform"]; });
+/* harmony import */ var _KHR_texture_basisu__WEBPACK_IMPORTED_MODULE_11__ = __webpack_require__(/*! ./KHR_texture_basisu */ "./glTF/2.0/Extensions/KHR_texture_basisu.ts");
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_texture_basisu", function() { return _KHR_texture_basisu__WEBPACK_IMPORTED_MODULE_11__["KHR_texture_basisu"]; });
 
-/* harmony import */ var _MSFT_audio_emitter__WEBPACK_IMPORTED_MODULE_12__ = __webpack_require__(/*! ./MSFT_audio_emitter */ "./glTF/2.0/Extensions/MSFT_audio_emitter.ts");
-/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "MSFT_audio_emitter", function() { return _MSFT_audio_emitter__WEBPACK_IMPORTED_MODULE_12__["MSFT_audio_emitter"]; });
+/* harmony import */ var _KHR_texture_transform__WEBPACK_IMPORTED_MODULE_12__ = __webpack_require__(/*! ./KHR_texture_transform */ "./glTF/2.0/Extensions/KHR_texture_transform.ts");
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_texture_transform", function() { return _KHR_texture_transform__WEBPACK_IMPORTED_MODULE_12__["KHR_texture_transform"]; });
 
-/* harmony import */ var _MSFT_lod__WEBPACK_IMPORTED_MODULE_13__ = __webpack_require__(/*! ./MSFT_lod */ "./glTF/2.0/Extensions/MSFT_lod.ts");
-/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "MSFT_lod", function() { return _MSFT_lod__WEBPACK_IMPORTED_MODULE_13__["MSFT_lod"]; });
+/* harmony import */ var _MSFT_audio_emitter__WEBPACK_IMPORTED_MODULE_13__ = __webpack_require__(/*! ./MSFT_audio_emitter */ "./glTF/2.0/Extensions/MSFT_audio_emitter.ts");
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "MSFT_audio_emitter", function() { return _MSFT_audio_emitter__WEBPACK_IMPORTED_MODULE_13__["MSFT_audio_emitter"]; });
 
-/* harmony import */ var _MSFT_minecraftMesh__WEBPACK_IMPORTED_MODULE_14__ = __webpack_require__(/*! ./MSFT_minecraftMesh */ "./glTF/2.0/Extensions/MSFT_minecraftMesh.ts");
-/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "MSFT_minecraftMesh", function() { return _MSFT_minecraftMesh__WEBPACK_IMPORTED_MODULE_14__["MSFT_minecraftMesh"]; });
+/* harmony import */ var _MSFT_lod__WEBPACK_IMPORTED_MODULE_14__ = __webpack_require__(/*! ./MSFT_lod */ "./glTF/2.0/Extensions/MSFT_lod.ts");
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "MSFT_lod", function() { return _MSFT_lod__WEBPACK_IMPORTED_MODULE_14__["MSFT_lod"]; });
 
-/* harmony import */ var _MSFT_sRGBFactors__WEBPACK_IMPORTED_MODULE_15__ = __webpack_require__(/*! ./MSFT_sRGBFactors */ "./glTF/2.0/Extensions/MSFT_sRGBFactors.ts");
-/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "MSFT_sRGBFactors", function() { return _MSFT_sRGBFactors__WEBPACK_IMPORTED_MODULE_15__["MSFT_sRGBFactors"]; });
+/* harmony import */ var _MSFT_minecraftMesh__WEBPACK_IMPORTED_MODULE_15__ = __webpack_require__(/*! ./MSFT_minecraftMesh */ "./glTF/2.0/Extensions/MSFT_minecraftMesh.ts");
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "MSFT_minecraftMesh", function() { return _MSFT_minecraftMesh__WEBPACK_IMPORTED_MODULE_15__["MSFT_minecraftMesh"]; });
 
-/* harmony import */ var _ExtrasAsMetadata__WEBPACK_IMPORTED_MODULE_16__ = __webpack_require__(/*! ./ExtrasAsMetadata */ "./glTF/2.0/Extensions/ExtrasAsMetadata.ts");
-/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "ExtrasAsMetadata", function() { return _ExtrasAsMetadata__WEBPACK_IMPORTED_MODULE_16__["ExtrasAsMetadata"]; });
+/* harmony import */ var _MSFT_sRGBFactors__WEBPACK_IMPORTED_MODULE_16__ = __webpack_require__(/*! ./MSFT_sRGBFactors */ "./glTF/2.0/Extensions/MSFT_sRGBFactors.ts");
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "MSFT_sRGBFactors", function() { return _MSFT_sRGBFactors__WEBPACK_IMPORTED_MODULE_16__["MSFT_sRGBFactors"]; });
 
+/* harmony import */ var _ExtrasAsMetadata__WEBPACK_IMPORTED_MODULE_17__ = __webpack_require__(/*! ./ExtrasAsMetadata */ "./glTF/2.0/Extensions/ExtrasAsMetadata.ts");
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "ExtrasAsMetadata", function() { return _ExtrasAsMetadata__WEBPACK_IMPORTED_MODULE_17__["ExtrasAsMetadata"]; });
+
+
 
 
 
@@ -8088,7 +8170,7 @@ _glTFFileLoader__WEBPACK_IMPORTED_MODULE_1__["GLTFFileLoader"]._CreateGLTF2Loade
 /*!***************************!*\
   !*** ./glTF/2.0/index.ts ***!
   \***************************/
-/*! exports provided: ArrayItem, GLTFLoader, EXT_lights_image_based, EXT_mesh_gpu_instancing, KHR_draco_mesh_compression, KHR_lights, KHR_materials_pbrSpecularGlossiness, KHR_materials_unlit, KHR_materials_clearcoat, KHR_materials_sheen, KHR_materials_specular, KHR_mesh_quantization, KHR_texture_basisu, KHR_texture_transform, MSFT_audio_emitter, MSFT_lod, MSFT_minecraftMesh, MSFT_sRGBFactors, ExtrasAsMetadata */
+/*! exports provided: ArrayItem, GLTFLoader, EXT_lights_image_based, EXT_mesh_gpu_instancing, KHR_draco_mesh_compression, KHR_lights, KHR_materials_pbrSpecularGlossiness, KHR_materials_unlit, KHR_materials_clearcoat, KHR_materials_sheen, KHR_materials_specular, KHR_materials_ior, KHR_mesh_quantization, KHR_texture_basisu, KHR_texture_transform, MSFT_audio_emitter, MSFT_lod, MSFT_minecraftMesh, MSFT_sRGBFactors, ExtrasAsMetadata */
 /***/ (function(module, __webpack_exports__, __webpack_require__) {
 
 "use strict";
@@ -8117,6 +8199,8 @@ __webpack_require__.r(__webpack_exports__);
 
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_specular", function() { return _Extensions__WEBPACK_IMPORTED_MODULE_1__["KHR_materials_specular"]; });
 
+/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_materials_ior", function() { return _Extensions__WEBPACK_IMPORTED_MODULE_1__["KHR_materials_ior"]; });
+
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_mesh_quantization", function() { return _Extensions__WEBPACK_IMPORTED_MODULE_1__["KHR_mesh_quantization"]; });
 
 /* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "KHR_texture_basisu", function() { return _Extensions__WEBPACK_IMPORTED_MODULE_1__["KHR_texture_basisu"]; });

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

@@ -1985,8 +1985,7 @@ declare module "babylonjs-loaders/glTF/2.0/Extensions/KHR_materials_specular" {
     import { IGLTFLoaderExtension } from "babylonjs-loaders/glTF/2.0/glTFLoaderExtension";
     import { GLTFLoader } from "babylonjs-loaders/glTF/2.0/glTFLoader";
     /**
-     * [Proposed Specification](https://github.com/KhronosGroup/glTF/pull/1677)
-     * [Playground Sample](https://www.babylonjs-playground.com/frame.html#BNIZX6#4)
+     * [Proposed Specification](https://github.com/KhronosGroup/glTF/pull/1719)
      * !!! Experimental Extension Subject to Changes !!!
      */
     export class KHR_materials_specular implements IGLTFLoaderExtension {
@@ -2012,6 +2011,43 @@ declare module "babylonjs-loaders/glTF/2.0/Extensions/KHR_materials_specular" {
         private _loadSpecularPropertiesAsync;
     }
 }
+declare module "babylonjs-loaders/glTF/2.0/Extensions/KHR_materials_ior" {
+    import { Nullable } from "babylonjs/types";
+    import { Material } from "babylonjs/Materials/material";
+    import { IMaterial } from "babylonjs-loaders/glTF/2.0/glTFLoaderInterfaces";
+    import { IGLTFLoaderExtension } from "babylonjs-loaders/glTF/2.0/glTFLoaderExtension";
+    import { GLTFLoader } from "babylonjs-loaders/glTF/2.0/glTFLoader";
+    /**
+     * [Proposed Specification](https://github.com/KhronosGroup/glTF/pull/1718)
+     * !!! Experimental Extension Subject to Changes !!!
+     */
+    export class KHR_materials_ior implements IGLTFLoaderExtension {
+        /**
+         * Default ior Value from the spec.
+         */
+        private static readonly _DEFAULT_IOR;
+        /**
+         * The name of this extension.
+         */
+        readonly name: string;
+        /**
+         * Defines whether this extension is enabled.
+         */
+        enabled: boolean;
+        /**
+         * Defines a number that determines the order the extensions are applied.
+         */
+        order: number;
+        private _loader;
+        /** @hidden */
+        constructor(loader: GLTFLoader);
+        /** @hidden */
+        dispose(): void;
+        /** @hidden */
+        loadMaterialPropertiesAsync(context: string, material: IMaterial, babylonMaterial: Material): Nullable<Promise<void>>;
+        private _loadIorPropertiesAsync;
+    }
+}
 declare module "babylonjs-loaders/glTF/2.0/Extensions/KHR_mesh_quantization" {
     import { IGLTFLoaderExtension } from "babylonjs-loaders/glTF/2.0/glTFLoaderExtension";
     import { GLTFLoader } from "babylonjs-loaders/glTF/2.0/glTFLoader";
@@ -2276,6 +2312,7 @@ declare module "babylonjs-loaders/glTF/2.0/Extensions/index" {
     export * from "babylonjs-loaders/glTF/2.0/Extensions/KHR_materials_clearcoat";
     export * from "babylonjs-loaders/glTF/2.0/Extensions/KHR_materials_sheen";
     export * from "babylonjs-loaders/glTF/2.0/Extensions/KHR_materials_specular";
+    export * from "babylonjs-loaders/glTF/2.0/Extensions/KHR_materials_ior";
     export * from "babylonjs-loaders/glTF/2.0/Extensions/KHR_mesh_quantization";
     export * from "babylonjs-loaders/glTF/2.0/Extensions/KHR_texture_basisu";
     export * from "babylonjs-loaders/glTF/2.0/Extensions/KHR_texture_transform";
@@ -4515,8 +4552,7 @@ declare module BABYLON.GLTF2.Loader.Extensions {
 }
 declare module BABYLON.GLTF2.Loader.Extensions {
     /**
-     * [Proposed Specification](https://github.com/KhronosGroup/glTF/pull/1677)
-     * [Playground Sample](https://www.babylonjs-playground.com/frame.html#BNIZX6#4)
+     * [Proposed Specification](https://github.com/KhronosGroup/glTF/pull/1719)
      * !!! Experimental Extension Subject to Changes !!!
      */
     export class KHR_materials_specular implements IGLTFLoaderExtension {
@@ -4544,6 +4580,38 @@ declare module BABYLON.GLTF2.Loader.Extensions {
 }
 declare module BABYLON.GLTF2.Loader.Extensions {
     /**
+     * [Proposed Specification](https://github.com/KhronosGroup/glTF/pull/1718)
+     * !!! Experimental Extension Subject to Changes !!!
+     */
+    export class KHR_materials_ior implements IGLTFLoaderExtension {
+        /**
+         * Default ior Value from the spec.
+         */
+        private static readonly _DEFAULT_IOR;
+        /**
+         * The name of this extension.
+         */
+        readonly name: string;
+        /**
+         * Defines whether this extension is enabled.
+         */
+        enabled: boolean;
+        /**
+         * Defines a number that determines the order the extensions are applied.
+         */
+        order: number;
+        private _loader;
+        /** @hidden */
+        constructor(loader: GLTFLoader);
+        /** @hidden */
+        dispose(): void;
+        /** @hidden */
+        loadMaterialPropertiesAsync(context: string, material: IMaterial, babylonMaterial: Material): Nullable<Promise<void>>;
+        private _loadIorPropertiesAsync;
+    }
+}
+declare module BABYLON.GLTF2.Loader.Extensions {
+    /**
      * [Specification](https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_mesh_quantization)
      */
     export class KHR_mesh_quantization implements IGLTFLoaderExtension {

dist/preview release/packagesSizeBaseLine.json

@@ -1 +1 @@
-{"thinEngineOnly":115808,"engineOnly":152211,"sceneOnly":511359,"minGridMaterial":644636,"minStandardMaterial":786986}
+{"thinEngineOnly":115859,"engineOnly":152262,"sceneOnly":511410,"minGridMaterial":644687,"minStandardMaterial":788187}

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

@@ -1985,8 +1985,7 @@ declare module "babylonjs-loaders/glTF/2.0/Extensions/KHR_materials_specular" {
     import { IGLTFLoaderExtension } from "babylonjs-loaders/glTF/2.0/glTFLoaderExtension";
     import { GLTFLoader } from "babylonjs-loaders/glTF/2.0/glTFLoader";
     /**
-     * [Proposed Specification](https://github.com/KhronosGroup/glTF/pull/1677)
-     * [Playground Sample](https://www.babylonjs-playground.com/frame.html#BNIZX6#4)
+     * [Proposed Specification](https://github.com/KhronosGroup/glTF/pull/1719)
      * !!! Experimental Extension Subject to Changes !!!
      */
     export class KHR_materials_specular implements IGLTFLoaderExtension {
@@ -2012,6 +2011,43 @@ declare module "babylonjs-loaders/glTF/2.0/Extensions/KHR_materials_specular" {
         private _loadSpecularPropertiesAsync;
     }
 }
+declare module "babylonjs-loaders/glTF/2.0/Extensions/KHR_materials_ior" {
+    import { Nullable } from "babylonjs/types";
+    import { Material } from "babylonjs/Materials/material";
+    import { IMaterial } from "babylonjs-loaders/glTF/2.0/glTFLoaderInterfaces";
+    import { IGLTFLoaderExtension } from "babylonjs-loaders/glTF/2.0/glTFLoaderExtension";
+    import { GLTFLoader } from "babylonjs-loaders/glTF/2.0/glTFLoader";
+    /**
+     * [Proposed Specification](https://github.com/KhronosGroup/glTF/pull/1718)
+     * !!! Experimental Extension Subject to Changes !!!
+     */
+    export class KHR_materials_ior implements IGLTFLoaderExtension {
+        /**
+         * Default ior Value from the spec.
+         */
+        private static readonly _DEFAULT_IOR;
+        /**
+         * The name of this extension.
+         */
+        readonly name: string;
+        /**
+         * Defines whether this extension is enabled.
+         */
+        enabled: boolean;
+        /**
+         * Defines a number that determines the order the extensions are applied.
+         */
+        order: number;
+        private _loader;
+        /** @hidden */
+        constructor(loader: GLTFLoader);
+        /** @hidden */
+        dispose(): void;
+        /** @hidden */
+        loadMaterialPropertiesAsync(context: string, material: IMaterial, babylonMaterial: Material): Nullable<Promise<void>>;
+        private _loadIorPropertiesAsync;
+    }
+}
 declare module "babylonjs-loaders/glTF/2.0/Extensions/KHR_mesh_quantization" {
     import { IGLTFLoaderExtension } from "babylonjs-loaders/glTF/2.0/glTFLoaderExtension";
     import { GLTFLoader } from "babylonjs-loaders/glTF/2.0/glTFLoader";
@@ -2276,6 +2312,7 @@ declare module "babylonjs-loaders/glTF/2.0/Extensions/index" {
     export * from "babylonjs-loaders/glTF/2.0/Extensions/KHR_materials_clearcoat";
     export * from "babylonjs-loaders/glTF/2.0/Extensions/KHR_materials_sheen";
     export * from "babylonjs-loaders/glTF/2.0/Extensions/KHR_materials_specular";
+    export * from "babylonjs-loaders/glTF/2.0/Extensions/KHR_materials_ior";
     export * from "babylonjs-loaders/glTF/2.0/Extensions/KHR_mesh_quantization";
     export * from "babylonjs-loaders/glTF/2.0/Extensions/KHR_texture_basisu";
     export * from "babylonjs-loaders/glTF/2.0/Extensions/KHR_texture_transform";
@@ -4515,8 +4552,7 @@ declare module BABYLON.GLTF2.Loader.Extensions {
 }
 declare module BABYLON.GLTF2.Loader.Extensions {
     /**
-     * [Proposed Specification](https://github.com/KhronosGroup/glTF/pull/1677)
-     * [Playground Sample](https://www.babylonjs-playground.com/frame.html#BNIZX6#4)
+     * [Proposed Specification](https://github.com/KhronosGroup/glTF/pull/1719)
      * !!! Experimental Extension Subject to Changes !!!
      */
     export class KHR_materials_specular implements IGLTFLoaderExtension {
@@ -4544,6 +4580,38 @@ declare module BABYLON.GLTF2.Loader.Extensions {
 }
 declare module BABYLON.GLTF2.Loader.Extensions {
     /**
+     * [Proposed Specification](https://github.com/KhronosGroup/glTF/pull/1718)
+     * !!! Experimental Extension Subject to Changes !!!
+     */
+    export class KHR_materials_ior implements IGLTFLoaderExtension {
+        /**
+         * Default ior Value from the spec.
+         */
+        private static readonly _DEFAULT_IOR;
+        /**
+         * The name of this extension.
+         */
+        readonly name: string;
+        /**
+         * Defines whether this extension is enabled.
+         */
+        enabled: boolean;
+        /**
+         * Defines a number that determines the order the extensions are applied.
+         */
+        order: number;
+        private _loader;
+        /** @hidden */
+        constructor(loader: GLTFLoader);
+        /** @hidden */
+        dispose(): void;
+        /** @hidden */
+        loadMaterialPropertiesAsync(context: string, material: IMaterial, babylonMaterial: Material): Nullable<Promise<void>>;
+        private _loadIorPropertiesAsync;
+    }
+}
+declare module BABYLON.GLTF2.Loader.Extensions {
+    /**
      * [Specification](https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_mesh_quantization)
      */
     export class KHR_mesh_quantization implements IGLTFLoaderExtension {

src/Materials/Node/Blocks/lerpBlock.ts

@@ -24,7 +24,7 @@ export class LerpBlock extends NodeMaterialBlock {
         this._linkConnectionTypes(0, 1);
         this._linkConnectionTypes(1, 2);
 
-        this._inputs[2].acceptedConnectionPointTypes.push(NodeMaterialBlockConnectionPointTypes.Float)
+        this._inputs[2].acceptedConnectionPointTypes.push(NodeMaterialBlockConnectionPointTypes.Float);
     }
 
     /**