【发布时间】：2022-01-20 10:44:10
【问题描述】：
我在玩 WebGL。下面是一个使用 Three.js 的 3D 对象的工作示例。是否可以将多个着色器添加到一个 3D 对象，比如这个？如果您能分享一些知识，我们将不胜感激。
我刚从一位专业人士那里学到了将一种着色器材质应用于 3D 对象的解决方案。但是，我很好奇是否要添加多个着色器来为 3D 对象提供更多效果。
<!DOCTYPE html>
<html lang="en">
<head>
<title>OBJ loader</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<style>
body {
font-family: Monospace;
background-color: #fff;
color: #fff;
margin: 0px;
overflow: hidden;
}
#info {
color: #fff;
position: absolute;
top: 10px;
width: 100%;
text-align: center;
z-index: 100;
display:block;
}
#info a, .button { color: #f00; font-weight: bold; text-decoration: underline; cursor: pointer }
</style>
</head>
<body>
<script src="http://threejs.org/build/three.min.js"></script>
<script src="http://threejs.org/examples/js/loaders/OBJLoader.js"></script>
<script src="http://threejs.org/examples/js/libs/stats.min.js"></script>
<script>
var clock = new THREE.Clock();
var delta = clock.getDelta(); // seconds.
var rotateAngle = Math.PI / 2 * delta; // pi/2 radians (90 degrees) per second
var container, stats;
var camera, scene, renderer, texture;
var mouseX = 0, mouseY = 0;
var windowHalfX = window.innerWidth / 2;
var windowHalfY = window.innerHeight / 2;
init();
animate();
//var texture = new THREE.Texture();
new THREE.OBJLoader( ).load( 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/40480/head.obj', function ( object ) {
object.traverse( function ( child ) {
if ( child instanceof THREE.Mesh ) {
child.material.map = texture;
}
} );
scene.add( object );
} );
function init() {
container = document.createElement( 'div' );
document.body.appendChild( container );
camera = new THREE.PerspectiveCamera( 15, window.innerWidth / window.innerHeight, 1, 2000 );
camera.position.z = 100;
// scene
scene = new THREE.Scene();
var ambient = new THREE.AmbientLight( 0x111130 );
scene.add( ambient );
var directionalLight = new THREE.DirectionalLight( 0xffeeff );
directionalLight.position.set( 1, 1,0.5 );
scene.add( directionalLight );
renderer = new THREE.WebGLRenderer();
renderer.setSize( window.innerWidth, window.innerHeight );
container.appendChild( renderer.domElement );
document.addEventListener( 'mousemove', onDocumentMouseMove, false );
window.addEventListener( 'resize', onWindowResize, false );
}
function onWindowResize() {
windowHalfX = window.innerWidth / 2;
windowHalfY = window.innerHeight / 2;
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
function onDocumentMouseMove( event ) {
mouseX = ( event.clientX - windowHalfX ) / 2;
mouseY = ( event.clientY - windowHalfY ) / 2;
}
function animate() {
requestAnimationFrame( animate );
render();
}
function render() {
camera.position.x += ( mouseX - camera.position.x ) * .05;
camera.position.y += ( - mouseY - camera.position.y ) * .05;
camera.lookAt( scene.position );
renderer.render( scene, camera );
}
</script>
</body>
</html>【问题讨论】：