@babylonjs/loaders/glTF/2.0/Extensions/KHR_materials_pbrSpecularGlossiness.js

import { Color3 } from "@babylonjs/core/Maths/math";
import { PBRMaterial } from "@babylonjs/core/Materials/PBR/pbrMaterial";
import { GLTFLoader } from "../glTFLoader";
var NAME = "KHR_materials_pbrSpecularGlossiness";
/**
 * [Specification](https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_pbrSpecularGlossiness)
 */
var KHR_materials_pbrSpecularGlossiness = /** @class */ (function () {
    /** @hidden */
    function KHR_materials_pbrSpecularGlossiness(loader) {
        /** The name of this extension. */
        this.name = NAME;
        /** Defines whether this extension is enabled. */
        this.enabled = true;
        this._loader = loader;
    }
    /** @hidden */
    KHR_materials_pbrSpecularGlossiness.prototype.dispose = function () {
        delete this._loader;
    };
    /** @hidden */
    KHR_materials_pbrSpecularGlossiness.prototype.loadMaterialPropertiesAsync = function (context, material, babylonMaterial) {
        var _this = this;
        return GLTFLoader.LoadExtensionAsync(context, material, this.name, function (extensionContext, extension) {
            var promises = new Array();
            promises.push(_this._loader.loadMaterialBasePropertiesAsync(context, material, babylonMaterial));
            promises.push(_this._loadSpecularGlossinessPropertiesAsync(extensionContext, material, extension, babylonMaterial));
            _this._loader.loadMaterialAlphaProperties(context, material, babylonMaterial);
            return Promise.all(promises).then(function () { });
        });
    };
    KHR_materials_pbrSpecularGlossiness.prototype._loadSpecularGlossinessPropertiesAsync = function (context, material, properties, babylonMaterial) {
        if (!(babylonMaterial instanceof PBRMaterial)) {
            throw new Error(context + ": Material type not supported");
        }
        var promises = new Array();
        babylonMaterial.metallic = null;
        babylonMaterial.roughness = null;
        if (properties.diffuseFactor) {
            babylonMaterial.albedoColor = Color3.FromArray(properties.diffuseFactor);
            babylonMaterial.alpha = properties.diffuseFactor[3];
        }
        else {
            babylonMaterial.albedoColor = Color3.White();
        }
        babylonMaterial.reflectivityColor = properties.specularFactor ? Color3.FromArray(properties.specularFactor) : Color3.White();
        babylonMaterial.microSurface = properties.glossinessFactor == undefined ? 1 : properties.glossinessFactor;
        if (properties.diffuseTexture) {
            promises.push(this._loader.loadTextureInfoAsync(context + "/diffuseTexture", properties.diffuseTexture, function (texture) {
                texture.name = babylonMaterial.name + " (Diffuse)";
                babylonMaterial.albedoTexture = texture;
            }));
        }
        if (properties.specularGlossinessTexture) {
            promises.push(this._loader.loadTextureInfoAsync(context + "/specularGlossinessTexture", properties.specularGlossinessTexture, function (texture) {
                texture.name = babylonMaterial.name + " (Specular Glossiness)";
                babylonMaterial.reflectivityTexture = texture;
            }));
            babylonMaterial.reflectivityTexture.hasAlpha = true;
            babylonMaterial.useMicroSurfaceFromReflectivityMapAlpha = true;
        }
        return Promise.all(promises).then(function () { });
    };
    return KHR_materials_pbrSpecularGlossiness;
}());
export { KHR_materials_pbrSpecularGlossiness };
GLTFLoader.RegisterExtension(NAME, function (loader) { return new KHR_materials_pbrSpecularGlossiness(loader); });
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