Three.js Loaders

Targets three.js r186. Examples use WebGLRenderer; the WebGPU and TSL section uses WebGPURenderer.

Quick Start

import * as THREE from "three";
import { GLTFLoader } from "three/addons/loaders/GLTFLoader.js";
import { RoomEnvironment } from "three/addons/environments/RoomEnvironment.js";

const renderer = new THREE.WebGLRenderer({ antialias: true });
renderer.setPixelRatio(window.devicePixelRatio);
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);

const scene = new THREE.Scene();
scene.environment = new THREE.PMREMGenerator(renderer).fromScene(new RoomEnvironment(), 0.04).texture; // glTF PBR materials render black without lights or an environment

const camera = new THREE.PerspectiveCamera(50, window.innerWidth / window.innerHeight, 0.1, 100);
camera.position.set(2, 1.5, 3);
camera.lookAt(0, 0, 0);

const gltf = await new GLTFLoader().loadAsync("model.glb");
scene.add(gltf.scene);

function animate() {
  renderer.render(scene, camera);
}

renderer.setAnimationLoop(animate);

LoadingManager

One manager coordinates several loaders and reports combined progress. loadAsync still rejects on failure; manager.onError fires as well.

import { GLTFLoader } from "three/addons/loaders/GLTFLoader.js";

const manager = new THREE.LoadingManager();

manager.onStart = (url, loaded, total) => {
  console.log(`Started loading: ${url}`);
};

manager.onProgress = (url, loaded, total) => {
  console.log(`Loading: ${((loaded / total) * 100).toFixed(1)}%`);
};

manager.onLoad = () => {
  console.log("All assets loaded");
};

manager.onError = (url) => {
  console.error(`Error loading: ${url}`);
};

const gltfLoader = new GLTFLoader(manager);
const textureLoader = new THREE.TextureLoader(manager);