nanogl-gltf/lib/extensions/KHR_materials_pbrSpecularGlossiness/index.js

gltf loader

import GltfTypes from "../../types/GltfTypes";
import Material from "./PbrSpecularGlossinessMaterial";
const EXT_ID = 'KHR_materials_pbrSpecularGlossiness';
class Instance {
    constructor(gltfLoader) {
        this.name = EXT_ID;
        this.priority = 1;
        this.loader = gltfLoader;
    }
    loadElement(data) {
        if (data.gltftype === GltfTypes.MATERIAL && data.extensions && data.extensions[EXT_ID]) {
            const material = new Material();
            return material.parse(this.loader, data).then(() => material);
        }
        return null;
    }
    acceptElement(data, element) {
        return null;
    }
}
/**
 * In PBR materials, two workflows exist for specifying the surface appearance of a material:
 * - Metallic-Roughness workflow, defined natively in nanogl-gltf with PbrMetallicRoughness element,
 * - Specular-Glossiness workflow, defined with this extension.
 *
 * This extension allows Materials to be defined using the specular-glossiness workflow, with diffuseTexture as the base color,
 * and specularGlossinessTexture containing the specular and glossiness data.
 */
export default class KHR_materials_pbrSpecularGlossiness {
    constructor() {
        this.name = EXT_ID;
    }
    createInstance(gltfLoader) {
        return new Instance(gltfLoader);
    }
}