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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <title>three.js webgl - materials - channels</title>
- <meta charset="utf-8">
- <meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
- <link type="text/css" rel="stylesheet" href="main.css">
- </head>
- <body>
- <div id="info">
- <a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - <span id="description">Normal, Velocity, and Depth Materials</span><br/>
- ninja head from <a href="https://gpuopen.com/archive/gamescgi/amd-gpu-meshmapper/" target="_blank" rel="noopener">AMD GPU MeshMapper</a>
- </div>
- <script type="importmap">
- {
- "imports": {
- "three": "../build/three.module.js",
- "three/addons/": "./jsm/"
- }
- }
- </script>
- <script type="module">
- import * as THREE from 'three';
- import Stats from 'three/addons/libs/stats.module.js';
- import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
- import { OBJLoader } from 'three/addons/loaders/OBJLoader.js';
- import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
- import { VelocityShader } from 'three/addons/shaders/VelocityShader.js';
- let stats;
- let camera, scene, renderer;
- const params = {
- material: 'normal',
- camera: 'perspective',
- side: 'double'
- };
- const sides = {
- 'front': THREE.FrontSide,
- 'back': THREE.BackSide,
- 'double': THREE.DoubleSide
- };
- let cameraOrtho, cameraPerspective;
- let controlsOrtho, controlsPerspective;
- let mesh, materialStandard, materialDepthBasic, materialDepthRGBA, materialDepthRGB, materialDepthRG, materialNormal, materialVelocity;
- const SCALE = 2.436143; // from original model
- const BIAS = - 0.428408; // from original model
- init();
- function init() {
- const container = document.createElement( 'div' );
- document.body.appendChild( container );
- renderer = new THREE.WebGLRenderer();
- renderer.setPixelRatio( window.devicePixelRatio );
- renderer.setSize( window.innerWidth, window.innerHeight );
- renderer.setAnimationLoop( animate );
- container.appendChild( renderer.domElement );
- //
- scene = new THREE.Scene();
- const aspect = window.innerWidth / window.innerHeight;
- cameraPerspective = new THREE.PerspectiveCamera( 45, aspect, 500, 3000 );
- cameraPerspective.position.z = 1500;
- scene.add( cameraPerspective );
- const height = 500;
- cameraOrtho = new THREE.OrthographicCamera( - height * aspect, height * aspect, height, - height, 1000, 2500 );
- cameraOrtho.position.z = 1500;
- scene.add( cameraOrtho );
- camera = cameraPerspective;
- controlsPerspective = new OrbitControls( cameraPerspective, renderer.domElement );
- controlsPerspective.minDistance = 1000;
- controlsPerspective.maxDistance = 2400;
- controlsPerspective.enableDamping = true;
- controlsOrtho = new OrbitControls( cameraOrtho, renderer.domElement );
- controlsOrtho.minZoom = 0.5;
- controlsOrtho.maxZoom = 1.5;
- controlsOrtho.enableDamping = true;
- // lights
- const ambientLight = new THREE.AmbientLight( 0xffffff, 0.3 );
- scene.add( ambientLight );
- const pointLight = new THREE.PointLight( 0xff0000, 1.5, 0, 0 );
- pointLight.position.z = 2500;
- scene.add( pointLight );
- const pointLight2 = new THREE.PointLight( 0xff6666, 3, 0, 0 );
- camera.add( pointLight2 );
- const pointLight3 = new THREE.PointLight( 0x0000ff, 1.5, 0, 0 );
- pointLight3.position.x = - 1000;
- pointLight3.position.z = 1000;
- scene.add( pointLight3 );
- // textures
- const textureLoader = new THREE.TextureLoader();
- const normalMap = textureLoader.load( 'models/obj/ninja/normal.png' );
- const aoMap = textureLoader.load( 'models/obj/ninja/ao.jpg' );
- const displacementMap = textureLoader.load( 'models/obj/ninja/displacement.jpg' );
- // material
- materialStandard = new THREE.MeshStandardMaterial( {
- color: 0xffffff,
- metalness: 0.5,
- roughness: 0.6,
- displacementMap: displacementMap,
- displacementScale: SCALE,
- displacementBias: BIAS,
- aoMap: aoMap,
- normalMap: normalMap,
- normalScale: new THREE.Vector2( 1, - 1 ),
- //flatShading: true,
- side: THREE.DoubleSide
- } );
- materialDepthBasic = new THREE.MeshDepthMaterial( {
- depthPacking: THREE.BasicDepthPacking,
- displacementMap: displacementMap,
- displacementScale: SCALE,
- displacementBias: BIAS,
- side: THREE.DoubleSide
- } );
- materialDepthRGBA = new THREE.MeshDepthMaterial( {
- depthPacking: THREE.RGBADepthPacking,
- displacementMap: displacementMap,
- displacementScale: SCALE,
- displacementBias: BIAS,
- side: THREE.DoubleSide
- } );
- materialDepthRGB = new THREE.MeshDepthMaterial( {
- depthPacking: THREE.RGBDepthPacking,
- displacementMap: displacementMap,
- displacementScale: SCALE,
- displacementBias: BIAS,
- side: THREE.DoubleSide
- } );
- materialDepthRG = new THREE.MeshDepthMaterial( {
- depthPacking: THREE.RGDepthPacking,
- displacementMap: displacementMap,
- displacementScale: SCALE,
- displacementBias: BIAS,
- side: THREE.DoubleSide
- } );
- materialNormal = new THREE.MeshNormalMaterial( {
- displacementMap: displacementMap,
- displacementScale: SCALE,
- displacementBias: BIAS,
- normalMap: normalMap,
- normalScale: new THREE.Vector2( 1, - 1 ),
- //flatShading: true,
- side: THREE.DoubleSide
- } );
- materialVelocity = new THREE.ShaderMaterial( {
- uniforms: THREE.UniformsUtils.clone( VelocityShader.uniforms ),
- vertexShader: VelocityShader.vertexShader,
- fragmentShader: VelocityShader.fragmentShader,
- side: THREE.DoubleSide
- } );
- materialVelocity.displacementMap = displacementMap; // required for defines
- materialVelocity.uniforms.displacementMap.value = displacementMap;
- materialVelocity.uniforms.displacementScale.value = SCALE;
- materialVelocity.uniforms.displacementBias.value = BIAS;
- //
- const loader = new OBJLoader();
- loader.load( 'models/obj/ninja/ninjaHead_Low.obj', function ( group ) {
- const geometry = group.children[ 0 ].geometry;
- geometry.center();
- mesh = new THREE.Mesh( geometry, materialNormal );
- mesh.scale.multiplyScalar( 25 );
- mesh.userData.matrixWorldPrevious = new THREE.Matrix4(); // for velocity
- scene.add( mesh );
- } );
- //
- stats = new Stats();
- container.appendChild( stats.dom );
- //
- const gui = new GUI();
- gui.add( params, 'material', [ 'standard', 'normal', 'velocity', 'depthBasic', 'depthRGBA', 'depthRGB', 'depthRG' ] );
- gui.add( params, 'camera', [ 'perspective', 'ortho' ] );
- gui.add( params, 'side', [ 'front', 'back', 'double' ] );
- //
- window.addEventListener( 'resize', onWindowResize );
- }
- function onWindowResize() {
- const width = window.innerWidth;
- const height = window.innerHeight;
- const aspect = window.innerWidth / window.innerHeight;
- camera.aspect = aspect;
- camera.left = - height * aspect;
- camera.right = height * aspect;
- camera.top = height;
- camera.bottom = - height;
- camera.updateProjectionMatrix();
- renderer.setSize( width, height );
- }
- //
- function animate() {
- stats.begin();
- render();
- stats.end();
- }
- function render() {
- if ( mesh ) {
- let material = mesh.material;
- switch ( params.material ) {
- case 'standard': material = materialStandard; break;
- case 'depthBasic': material = materialDepthBasic; break;
- case 'depthRGBA': material = materialDepthRGBA; break;
- case 'depthRGB': material = materialDepthRGB; break;
- case 'depthRG': material = materialDepthRG; break;
- case 'normal': material = materialNormal; break;
- case 'velocity': material = materialVelocity; break;
- }
- if ( sides[ params.side ] !== material.side ) {
- switch ( params.side ) {
- case 'front': material.side = THREE.FrontSide; break;
- case 'back': material.side = THREE.BackSide; break;
- case 'double': material.side = THREE.DoubleSide; break;
- }
- material.needsUpdate = true;
- }
- mesh.material = material;
- }
- switch ( params.camera ) {
- case 'perspective':
- camera = cameraPerspective;
- break;
- case 'ortho':
- camera = cameraOrtho;
- break;
- }
- controlsPerspective.update();
- controlsOrtho.update(); // must update both controls for damping to complete
- // remember camera projection changes
- materialVelocity.uniforms.previousProjectionViewMatrix.value.copy( materialVelocity.uniforms.currentProjectionViewMatrix.value );
- materialVelocity.uniforms.currentProjectionViewMatrix.value.multiplyMatrices( camera.projectionMatrix, camera.matrixWorldInverse );
- if ( mesh && mesh.userData.matrixWorldPrevious ) {
- materialVelocity.uniforms.modelMatrixPrev.value.copy( mesh.userData.matrixWorldPrevious );
- }
- renderer.render( scene, camera );
- scene.traverse( function ( object ) {
- if ( object.isMesh ) {
- object.userData.matrixWorldPrevious.copy( object.matrixWorld );
- }
- } );
- }
- </script>
- </body>
- </html>
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