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+<!DOCTYPE html>
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+<html lang="en">
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+ <head>
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+ <title>three.js webgpu - postprocessing dof - basic</title>
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+ <meta charset="utf-8">
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+ <meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
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+ <link type="text/css" rel="stylesheet" href="main.css">
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+ <style>
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+ body {
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+ touch-action: none;
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+ color: #000000;
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+ }
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+ a {
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+ color: #2983ff;
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+ }
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+ </style>
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+ </head>
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+ <body>
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+
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+ <div id="info">
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+ <a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - DOF - basic</a><br />
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+ <a href="https://skfb.ly/opNFG" target="_blank" rel="noopener">Bath day</a> by
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+ <a href="https://sketchfab.com/stanst" target="_blank" rel="noopener">Stan.St</a> is licensed under <a href="https://creativecommons.org/licenses/by/4.0/" target="_blank" rel="noopener">Creative Commons Attribution</a>.<br />
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+ Click on a position in the scene to focus it.<br />
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+ </div>
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+
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+ <script type="importmap">
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+ {
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+ "imports": {
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+ "three": "../build/three.webgpu.js",
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+ "three/webgpu": "../build/three.webgpu.js",
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+ "three/tsl": "../build/three.tsl.js",
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+ "three/addons/": "./jsm/"
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+ }
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+ }
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+ </script>
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+
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+ <script type="module">
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+
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+ import * as THREE from 'three';
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+ import { mix, pass, renderOutput, smoothstep, uniform, vec3 } from 'three/tsl';
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+ import { gaussianBlur } from 'three/addons/tsl/display/GaussianBlurNode.js';
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+ import { fxaa } from 'three/addons/tsl/display/FXAANode.js';
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+
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+ import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js';
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+ import { UltraHDRLoader } from 'three/addons/loaders/UltraHDRLoader.js';
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+ import { DRACOLoader } from 'three/addons/loaders/DRACOLoader.js';
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+
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+ import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
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+ import TWEEN from 'three/addons/libs/tween.module.js';
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+
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+ let camera, scene, timer, renderer, model, mixer, raycaster, postProcessing;
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+
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+ const pointerCoords = new THREE.Vector2();
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+ const focusPoint = new THREE.Vector3( 1, 1.75, - 0.4 );
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+ const focusPointView = uniform( vec3() );
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+
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+ init();
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+
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+ async function init() {
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+
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+ camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 0.1, 100 );
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+ camera.position.set( - 5, 4, 5 );
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+ camera.lookAt( 0, 1.5, 0 );
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+
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+ scene = new THREE.Scene();
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+ scene.background = new THREE.Color( 0x90D5FF );
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+
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+ raycaster = new THREE.Raycaster();
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+
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+ timer = new THREE.Timer();
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+
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+ const dracoLoader = new DRACOLoader();
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+ dracoLoader.setDecoderPath( 'jsm/libs/draco/gltf/' );
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+
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+ const loader = new GLTFLoader();
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+ loader.setDRACOLoader( dracoLoader );
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+ const gltf = await loader.loadAsync( 'models/gltf/bath_day.glb' );
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+
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+ model = gltf.scene;
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+ scene.add( model );
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+
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+ mixer = new THREE.AnimationMixer( model );
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+ const action = mixer.clipAction( gltf.animations[ 0 ] );
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+ action.play();
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+
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+ //
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+
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+ const hdrLoader = new UltraHDRLoader();
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+ hdrLoader.setDataType( THREE.HalfFloatType );
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+ const envMap = await hdrLoader.loadAsync( 'textures/equirectangular/spruit_sunrise_2k.hdr.jpg' );
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+ envMap.mapping = THREE.EquirectangularReflectionMapping;
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+ scene.environmentRotation.y = Math.PI * 0.5;
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+ scene.environment = envMap;
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+
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+ // renderer
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+
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+ renderer = new THREE.WebGPURenderer();
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+ renderer.setPixelRatio( window.devicePixelRatio );
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+ renderer.setSize( window.innerWidth, window.innerHeight );
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+ renderer.setAnimationLoop( animate );
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+ renderer.toneMapping = THREE.NeutralToneMapping;
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+ document.body.appendChild( renderer.domElement );
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+
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+ // post processing
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+
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+ postProcessing = new THREE.PostProcessing( renderer );
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+ postProcessing.outputColorTransform = false;
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+
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+ // DOF uniforms
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+
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+ const maxBlur = uniform( 2 ); // maximum amount of blur
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+ const minDistance = uniform( 1 ); // all positions at or below minDistance will be completely in focus.
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+ const maxDistance = uniform( 3 ); // all positions at or beyond maxDistance will be completely out of focus.
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+
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+ // beauty and blur/out-of-focus pass
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+
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+ const scenePass = pass( scene, camera );
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+ const scenePassViewZ = scenePass.getViewZNode();
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+ const scenePassBlurred = gaussianBlur( scenePass, maxBlur );
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+
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+ // simple DOF from https://lettier.github.io/3d-game-shaders-for-beginners/depth-of-field.html
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+
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+ const blur = smoothstep( minDistance, maxDistance, scenePassViewZ.sub( focusPointView.z ).abs() );
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+ const dofPass = mix( scenePass, scenePassBlurred, blur );
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+
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+ const outputPass = renderOutput( dofPass );
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+ const fxaaPass = fxaa( outputPass );
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+
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+ postProcessing.outputNode = fxaaPass;
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+
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+ // GUI
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+
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+ const gui = new GUI();
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+ gui.add( minDistance, 'value', 0, 3 ).name( 'min distance' );
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+ gui.add( maxDistance, 'value', 0, 5 ).name( 'max distance' );
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+ gui.add( maxBlur, 'value', 0, 5 ).name( 'max blur' );
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+
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+ //
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+
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+ renderer.domElement.addEventListener( 'pointerdown', onPointerDown );
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+
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+ window.addEventListener( 'resize', onWindowResize );
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+
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+ }
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+
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+ function onPointerDown( event ) {
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+
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+ pointerCoords.set(
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+ ( event.clientX / window.innerWidth ) * 2 - 1,
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+ - ( event.clientY / window.innerHeight ) * 2 + 1
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+ );
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+
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+ raycaster.setFromCamera( pointerCoords, camera );
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+
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+ const intersects = raycaster.intersectObject( model );
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+
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+ if ( intersects.length > 0 ) {
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+
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+ TWEEN.removeAll();
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+
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+ new TWEEN.Tween( focusPoint )
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+ .to( intersects[ 0 ].point, 500 )
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+ .easing( TWEEN.Easing.Cubic.InOut )
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+ .start();
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+
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+ }
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+
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+ }
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+
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+ function onWindowResize() {
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+
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+ camera.aspect = window.innerWidth / window.innerHeight;
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+ camera.updateProjectionMatrix();
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+
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+ renderer.setSize( window.innerWidth, window.innerHeight );
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+
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+ }
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+
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+ function animate() {
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+
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+ TWEEN.update();
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+
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+ timer.update();
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+
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+ mixer.update( timer.getDelta() );
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+
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+ // since the focus point is expressed in view space, it must be updated on every
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+ // camera change. for simplicity, do this every frame.
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+
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+ camera.updateMatrixWorld();
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+ focusPointView.value.copy( focusPoint ).applyMatrix4( camera.matrixWorldInverse );
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+
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+ postProcessing.render();
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+
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+
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+ }
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+
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+ </script>
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+ </body>
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+</html>
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Michael Herzog
