pmndrs/postprocessing example

by Matt

HTML

<base href="https://rawcdn.githack.com/mrdoob/three.js/r156/examples/" />
<script async src="https://cdn.jsdelivr.net/npm/[email protected]/dist/es-module-shims.js"></script>
<script type="importmap">
	{
		"imports": {
			"three": "https://cdn.jsdelivr.net/npm/[email protected]/build/three.module.js",
			"three/addons/": "https://cdn.jsdelivr.net/npm/[email protected]/examples/jsm/",
			"lil-gui": "https://cdn.jsdelivr.net/npm/[email protected]/dist/lil-gui.esm.min.js",
			"postprocessing": "https://cdn.jsdelivr.net/npm/[email protected]/build/index.js"
		}
	}
</script>

CSS

canvas {
	position: fixed;
	inset: 0;
}

JavaScript

import * as THREE from 'three'
import { OrbitControls } from 'three/addons/controls/OrbitControls.js'
import { GUI } from 'lil-gui'
import { BloomEffect, EffectComposer, EffectPass, RenderPass, VignetteEffect } from "postprocessing";


let scene, camera, renderer, composer
let mesh, orbitControls, clock
let params

init().then(animate)

async function init() {

	params = {
		speed: 1
	}
	
	scene = new THREE.Scene()
	scene.background = new THREE.Color('skyblue')

	camera = new THREE.PerspectiveCamera(75, undefined, 0.1, 1000)
	camera.position.set(1, 2, 3)
	
	clock = new THREE.Clock()

	const directionalLight = new THREE.DirectionalLight('white', Math.PI)
	directionalLight.position.set(2, 3, 4)
	scene.add(directionalLight)

	const ambientLight = new THREE.AmbientLight('white', 0.3 * Math.PI)
	scene.add(ambientLight)

	renderer = new THREE.WebGLRenderer({ antialias: true })
	document.body.appendChild(renderer.domElement)
	
	composer = new EffectComposer(
		renderer,
		{ frameBufferType: THREE.HalfFloatType } // https://github.com/mrdoob/three.js/issues/24002
	);  
	composer.addPass(new RenderPass(scene, camera));
	composer.addPass(new EffectPass(camera,
		new BloomEffect({ luminanceThreshold: 1, luminanceSmoothing: 0.5, mipmapBlur: true }),
		new VignetteEffect()
	));


	orbitControls = new OrbitControls(camera, renderer.domElement)

	const geometry = new THREE.BoxGeometry()
	const material = new THREE.MeshStandardMaterial({ emissive: 'white' })
	mesh = new THREE.Mesh(geometry, material)
	scene.add(mesh)

	const gui = new GUI()
	gui.add(material, 'emissiveIntensity').step(0.1).min(0).max(2)
	
	onWindowResize()
	
	window.addEventListener('resize', onWindowResize, false)
	
}

function animate() {

	const dt = clock.getDelta()

	orbitControls.update()

	mesh.rotation.x = mesh.rotation.y += dt * params.speed

	composer.render(scene, camera)

	requestAnimationFrame(animate)

}


function onWindowResize() {

	camera.aspect = window.innerWidth /...