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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 - shadowmap + opacity</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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+ </head>
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+
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+ <body>
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+ <div id="info">
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+ <a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> webgpu - shadowmap + opacity
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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/tsl": "../build/three.webgpu.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 { tslFn, vec4 } from 'three/tsl';
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+
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+ import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
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+ import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js';
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+
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+ let camera, scene, renderer;
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+
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+ init().then( render );
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+
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+ async function init() {
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+
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+ const container = document.createElement( 'div' );
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+ document.body.appendChild( container );
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+
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+ camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 0.1, 40 );
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+ camera.position.set( - 4, 2, 6 );
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+
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+ renderer = new THREE.WebGPURenderer( { antialias: true } );
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+ renderer.setPixelRatio( window.devicePixelRatio );
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+ renderer.setSize( window.innerWidth, window.innerHeight );
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+ renderer.setAnimationLoop( render );
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+ renderer.toneMapping = THREE.AgXToneMapping;
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+ renderer.toneMappingExposure = 1.5;
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+ container.appendChild( renderer.domElement );
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+
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+ scene = new THREE.Scene();
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+ scene.background = new THREE.Color( 0x9e9eff );
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+
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+ // light + shadow
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+
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+ const hemi = new THREE.AmbientLight( 0xffffff, .5 );
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+ scene.add( hemi );
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+
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+ const dirLight = new THREE.DirectionalLight( 0x6666ff, 10 );
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+ dirLight.position.set( 3, 5, 17 );
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+ dirLight.castShadow = true;
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+ dirLight.shadow.camera.near = 0.1;
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+ dirLight.shadow.camera.far = 50;
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+ dirLight.shadow.camera.right = 5;
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+ dirLight.shadow.camera.left = - 5;
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+ dirLight.shadow.camera.top = 5;
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+ dirLight.shadow.camera.bottom = - 5;
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+ dirLight.shadow.mapSize.width = 2048;
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+ dirLight.shadow.mapSize.height = 2048;
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+ dirLight.shadow.radius = 4;
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+ dirLight.shadow.bias = - 0.0005;
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+ scene.add( dirLight );
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+
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+ //
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+
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+ const loader = new GLTFLoader();
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+ const gltf = await loader.loadAsync( 'models/gltf/DragonAttenuation.glb' );
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+ gltf.scene.position.set( 0, 0, - .5 );
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+
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+ const floor = gltf.scene.children[ 0 ];
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+ floor.scale.x += 4;
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+ floor.scale.y += 4;
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+
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+ const dragon = gltf.scene.children[ 1 ];
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+ dragon.position.set( - 1.5, - 0.8, 1 );
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+
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+ const dragon2 = dragon.clone();
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+ dragon2.material = dragon.material.clone();
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+ dragon2.material.attenuationColor = new THREE.Color( 0xff0000 );
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+ dragon2.position.x += 4;
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+ gltf.scene.add( dragon2 );
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+
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+ // shadow node
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+
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+ const customShadow = tslFn( ( [ color, opacity = .8 ] ) => {
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+
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+ return vec4( color, opacity );
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+
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+ } );
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+
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+ // apply shadow
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+
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+ floor.receiveShadow = true;
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+
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+ dragon.castShadow = dragon2.castShadow = true;
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+ dragon.receiveShadow = dragon2.receiveShadow = true;
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+
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+ dragon.material.shadowNode = customShadow( dragon.material.attenuationColor );
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+ dragon2.material.shadowNode = customShadow( dragon2.material.attenuationColor );
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+
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+ //
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+
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+ scene.add( gltf.scene );
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+
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+ const controls = new OrbitControls( camera, renderer.domElement );
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+ controls.minDistance = 0.1;
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+ controls.maxDistance = 10;
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+ controls.target.set( 0, 0, 0 );
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+ controls.update();
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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 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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+ //
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+
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+ function render() {
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+
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+ renderer.render( scene, camera );
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+
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+ }
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+
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+ </script>
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+
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+ </body>
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+</html>
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sunag
