ThreeJS -如何添加HDRi等长矩形贴图(用于照明场景)，同时保持背景透明(Alpha)

<script src="https://cdn.jsdelivr.net/npm/three@0.132.2/build/three.min.js"></script>

var scene = new THREE.Scene();
var camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000);

var renderer = new THREE.WebGLRenderer({ alpha: true });
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);

var textureLoader = new THREE.TextureLoader();
var texture = textureLoader.load('path/to/hdri_texture.jpg');
var material = new THREE.MeshBasicMaterial({ map: texture, side: THREE.BackSide });
var geometry = new THREE.BoxGeometry(1, 1, 1);
var cube = new THREE.Mesh(geometry, material);
scene.add(cube);

renderer.setClearColor(0x000000, 0);

function animate() {
    requestAnimationFrame(animate);
    cube.rotation.x += 0.01;
    cube.rotation.y += 0.01;
    renderer.render(scene, camera);
}
animate();