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

import { Color3 } from "@babylonjs/core/Maths/math";
import { PBRMaterial } from "@babylonjs/core/Materials/PBR/pbrMaterial";
import { GLTFLoader } from "../glTFLoader";
var NAME = "KHR_materials_unlit";
/**
 * [Specification](https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_unlit)
 */
var KHR_materials_unlit = /** @class */ (function () {
    /** @hidden */
    function KHR_materials_unlit(loader) {
        /** The name of this extension. */
        this.name = NAME;
        /** Defines whether this extension is enabled. */
        this.enabled = true;
        this._loader = loader;
    }
    /** @hidden */
    KHR_materials_unlit.prototype.dispose = function () {
        delete this._loader;
    };
    /** @hidden */
    KHR_materials_unlit.prototype.loadMaterialPropertiesAsync = function (context, material, babylonMaterial) {
        var _this = this;
        return GLTFLoader.LoadExtensionAsync(context, material, this.name, function () {
            return _this._loadUnlitPropertiesAsync(context, material, babylonMaterial);
        });
    };
    KHR_materials_unlit.prototype._loadUnlitPropertiesAsync = function (context, material, babylonMaterial) {
        if (!(babylonMaterial instanceof PBRMaterial)) {
            throw new Error(context + ": Material type not supported");
        }
        var promises = new Array();
        babylonMaterial.unlit = true;
        var properties = material.pbrMetallicRoughness;
        if (properties) {
            if (properties.baseColorFactor) {
                babylonMaterial.albedoColor = Color3.FromArray(properties.baseColorFactor);
                babylonMaterial.alpha = properties.baseColorFactor[3];
            }
            else {
                babylonMaterial.albedoColor = Color3.White();
            }
            if (properties.baseColorTexture) {
                promises.push(this._loader.loadTextureInfoAsync(context + "/baseColorTexture", properties.baseColorTexture, function (texture) {
                    texture.name = babylonMaterial.name + " (Base Color)";
                    babylonMaterial.albedoTexture = texture;
                }));
            }
        }
        if (material.doubleSided) {
            babylonMaterial.backFaceCulling = false;
            babylonMaterial.twoSidedLighting = true;
        }
        this._loader.loadMaterialAlphaProperties(context, material, babylonMaterial);
        return Promise.all(promises).then(function () { });
    };
    return KHR_materials_unlit;
}());
export { KHR_materials_unlit };
GLTFLoader.RegisterExtension(NAME, function (loader) { return new KHR_materials_unlit(loader); });
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