问题:用threejs编写延迟渲染
解答如下,大家评估一下
答案详解:
以下是用Three.js编写延迟渲染的基本步骤:
1. 创建场景、相机和渲染器:
```javascript
var scene = new THREE.Scene();
var camera = new THREE.PerspectiveCamera( 75, window.innerWidth/window.innerHeight, 0.1, 1000 );
var renderer = new THREE.WebGLRenderer();
renderer.setSize( window.innerWidth, window.innerHeight );
document.body.appendChild( renderer.domElement );
```
2. 创建延迟渲染器:
```javascript
var deferredRendering = new THREE.DeferredRenderer( renderer, camera );
```
3. 创建需要渲染的几何体:
```javascript
var geometry = new THREE.BoxGeometry( 1, 1, 1 );
var material = new THREE.MeshBasicMaterial( { color: 0xffffff } );
var cube = new THREE.Mesh( geometry, material );
scene.add( cube );
```
4. 更新和渲染延迟渲染器:
```javascript
deferredRendering.update( scene );
deferredRendering.render();
```
5. 使用延迟渲染器渲染需要延迟渲染的几何体:
```javascript
deferredRendering.renderDeferred( [ cube ] );
```
6. 最后,记得调用渲染器的`render`方法将结果显示在屏幕上:
```javascript
renderer.render( scene, camera );
```
以上就是用Three.js编写延迟渲染的基本步骤。当然,还有很多细节需要自己去探索和实现。
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