webgl_materials_skin.html

<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - materials - skin [Lee Perry-Smith]</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="http://threejs.org" target="_blank" rel="noopener">three.js</a> - webgl skin rendering demo.<br/>
			<a href="http://graphics.cs.williams.edu/data/meshes.xml#14" target="_blank" rel="noopener">Lee Perry-Smith</a> head.
		</div>

		<script type="module">

			import * as THREE from '../build/three.module.js';

			import Stats from './jsm/libs/stats.module.js';

			import { GLTFLoader } from './jsm/loaders/GLTFLoader.js';
			import { EffectComposer } from './jsm/postprocessing/EffectComposer.js';
			import { RenderPass } from './jsm/postprocessing/RenderPass.js';
			import { ShaderPass } from './jsm/postprocessing/ShaderPass.js';
			import { BloomPass } from './jsm/postprocessing/BloomPass.js';
			import { TexturePass } from './jsm/postprocessing/TexturePass.js';

			import { SkinShaderAdvanced, SkinShaderBeckmann } from './jsm/shaders/SkinShader.js';

			var statsEnabled = true;

			var container, stats, loader;

			var camera, scene, renderer;

			var mesh;

			var composer, composerUV1, composerUV2, composerUV3, composerBeckmann;

			var directionalLight;

			var mouseX = 0, mouseY = 0;
			var targetX = 0, targetY = 0;

			var windowHalfX = window.innerWidth / 2;
			var windowHalfY = window.innerHeight / 2;

			var firstPass = true;

			init();
			animate();

			function init() {

				container = document.createElement( 'div' );
				document.body.appendChild( container );

				camera = new THREE.PerspectiveCamera( 35, window.innerWidth / window.innerHeight, 1, 10000 );
				camera.position.z = 900;

				scene = new THREE.Scene();
				scene.background = new THREE.Color( 0x050505 );

				// LIGHTS

				directionalLight = new THREE.DirectionalLight( 0xffeedd, 1.5 );
				directionalLight.position.set( 1, 0.5, 1 );
				scene.add( directionalLight );

				directionalLight = new THREE.DirectionalLight( 0xddddff, 0.5 );
				directionalLight.position.set( - 1, 0.5, - 1 );
				scene.add( directionalLight );

				// MATERIALS

				var diffuse = 0xbbbbbb, specular = 0x555555;

				var shader = SkinShaderAdvanced;

				var uniformsUV = THREE.UniformsUtils.clone( shader.uniforms );

				var textureLoader = new THREE.TextureLoader();

				uniformsUV[ "tNormal" ].value = textureLoader.load( "models/gltf/LeePerrySmith/Infinite-Level_02_Tangent_SmoothUV.jpg" );
				uniformsUV[ "uNormalScale" ].value = - 1.5;

				uniformsUV[ "tDiffuse" ].value = textureLoader.load( "models/gltf/LeePerrySmith/Map-COL.jpg" );

				uniformsUV[ "passID" ].value = 0;

				uniformsUV[ "diffuse" ].value.setHex( diffuse );
				uniformsUV[ "specular" ].value.setHex( specular );

				uniformsUV[ "uRoughness" ].value = 0.185;
				uniformsUV[ "uSpecularBrightness" ].value = 0.7;


				var uniforms = THREE.UniformsUtils.clone( uniformsUV );
				uniforms[ "tDiffuse" ].value = uniformsUV[ "tDiffuse" ].value;
				uniforms[ "tNormal" ].value = uniformsUV[ "tNormal" ].value;
				uniforms[ "passID" ].value = 1;


				var parameters = { fragmentShader: shader.fragmentShader, vertexShader: shader.vertexShader, uniforms: uniforms, lights: true };
				var parametersUV = { fragmentShader: shader.fragmentShader, vertexShader: shader.vertexShaderUV, uniforms: uniformsUV, lights: true };

				var material = new THREE.ShaderMaterial( parameters );
				material.extensions.derivatives = true;

				var materialUV = new THREE.ShaderMaterial( parametersUV );
				materialUV.extensions.derivatives = true;

				// LOADER

				loader = new GLTFLoader();
				loader.load( "models/gltf/LeePerrySmith/LeePerrySmith.glb", function ( gltf ) {

					createScene( gltf.scene.children[ 0 ].geometry, 100, material );

				} );

				// RENDERER

				renderer = new THREE.WebGLRenderer();
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				renderer.autoClear = false;

				container.appendChild( renderer.domElement );

				// STATS

				if ( statsEnabled ) {

					stats = new Stats();
					container.appendChild( stats.dom );

				}

				// EVENTS

				document.addEventListener( 'mousemove', onDocumentMouseMove, false );

				// POSTPROCESSING

				var renderModelUV = new RenderPass( scene, camera, materialUV, new THREE.Color( 0x575757 ) );

				var effectBloom1 = new BloomPass( 1, 15, 2, 512 );
				var effectBloom2 = new BloomPass( 1, 25, 3, 512 );
				var effectBloom3 = new BloomPass( 1, 25, 4, 512 );

				effectBloom1.clear = true;
				effectBloom2.clear = true;
				effectBloom3.clear = true;

				//

				var pars = {
					generateMipmaps: true,
					minFilter: THREE.LinearMipmapLinearFilter,
					magFilter: THREE.LinearFilter,
					format: THREE.RGBFormat,
					stencilBuffer: false
				};

				var rtwidth = 512;
				var rtheight = 512;

				//

				composer = new EffectComposer( renderer, new THREE.WebGLRenderTarget( rtwidth, rtheight, pars ) );
				composer.addPass( renderModelUV );
				composer.renderToScreen = false;

				var renderScene = new TexturePass( composer.renderTarget2.texture );

				//

				composerUV1 = new EffectComposer( renderer, new THREE.WebGLRenderTarget( rtwidth, rtheight, pars ) );

				composerUV1.addPass( renderScene );
				composerUV1.addPass( effectBloom1 );
				composerUV1.renderToScreen = false;

				composerUV2 = new EffectComposer( renderer, new THREE.WebGLRenderTarget( rtwidth, rtheight, pars ) );

				composerUV2.addPass( renderScene );
				composerUV2.addPass( effectBloom2 );
				composerUV2.renderToScreen = false;

				composerUV3 = new EffectComposer( renderer, new THREE.WebGLRenderTarget( rtwidth, rtheight, pars ) );

				composerUV3.addPass( renderScene );
				composerUV3.addPass( effectBloom3 );
				composerUV3.renderToScreen = false;

				//

				var effectBeckmann = new ShaderPass( SkinShaderBeckmann );
				composerBeckmann = new EffectComposer( renderer, new THREE.WebGLRenderTarget( rtwidth, rtheight, pars ) );
				composerBeckmann.addPass( effectBeckmann );

				//

				uniforms[ "tBlur1" ].value = composer.renderTarget2.texture;
				uniforms[ "tBlur2" ].value = composerUV1.renderTarget2.texture;
				uniforms[ "tBlur3" ].value = composerUV2.renderTarget2.texture;
				uniforms[ "tBlur4" ].value = composerUV3.renderTarget2.texture;

				uniforms[ "tBeckmann" ].value = composerBeckmann.renderTarget1.texture;

				//

				window.addEventListener( 'resize', onWindowResize, false );

			}

			function onWindowResize() {

				windowHalfX = window.innerWidth / 2;
				windowHalfY = window.innerHeight / 2;

				camera.aspect = window.innerWidth / window.innerHeight;
				camera.updateProjectionMatrix();

				renderer.setSize( window.innerWidth, window.innerHeight );

			}

			function createScene( geometry, scale, material ) {

				mesh = new THREE.Mesh( geometry, material );
				mesh.position.y = - 50;
				mesh.scale.set( scale, scale, scale );

				scene.add( mesh );

			}

			function onDocumentMouseMove( event ) {

				mouseX = ( event.clientX - windowHalfX );
				mouseY = ( event.clientY - windowHalfY );

			}

			//

			function animate() {

				requestAnimationFrame( animate );

				render();
				if ( statsEnabled ) stats.update();

			}

			function render() {

				targetX = mouseX * .001;
				targetY = mouseY * .001;

				if ( mesh ) {

					mesh.rotation.y += 0.05 * ( targetX - mesh.rotation.y );
					mesh.rotation.x += 0.05 * ( targetY - mesh.rotation.x );

				}

				renderer.clear();

				if ( firstPass ) {

					composerBeckmann.render();
					firstPass = false;

				}

				composer.render();

				composerUV1.render();
				composerUV2.render();
				composerUV3.render();

				renderer.render( scene, camera );

			}

		</script>

	</body>
</html>