javascript
/
three.js
zrcadlo https://github.com/tazdij/three.js.git


			
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212
							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - materials - shaders [lava]</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="container"></div>
		<div id="info"><a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> - shader material demo. featuring lava shader by <a href="http://irrlicht.sourceforge.net/phpBB2/viewtopic.php?t=21057" target="_blank" rel="noopener">TheGameMaker</a></div>

		<script id="fragmentShader" type="x-shader/x-fragment">

			uniform float time;

			uniform float fogDensity;
			uniform vec3 fogColor;

			uniform sampler2D texture1;
			uniform sampler2D texture2;

			varying vec2 vUv;

			void main( void ) {

				vec2 position = - 1.0 + 2.0 * vUv;

				vec4 noise = texture2D( texture1, vUv );
				vec2 T1 = vUv + vec2( 1.5, - 1.5 ) * time * 0.02;
				vec2 T2 = vUv + vec2( - 0.5, 2.0 ) * time * 0.01;

				T1.x += noise.x * 2.0;
				T1.y += noise.y * 2.0;
				T2.x -= noise.y * 0.2;
				T2.y += noise.z * 0.2;

				float p = texture2D( texture1, T1 * 2.0 ).a;

				vec4 color = texture2D( texture2, T2 * 2.0 );
				vec4 temp = color * ( vec4( p, p, p, p ) * 2.0 ) + ( color * color - 0.1 );

				if( temp.r > 1.0 ) { temp.bg += clamp( temp.r - 2.0, 0.0, 100.0 ); }
				if( temp.g > 1.0 ) { temp.rb += temp.g - 1.0; }
				if( temp.b > 1.0 ) { temp.rg += temp.b - 1.0; }

				gl_FragColor = temp;

				float depth = gl_FragCoord.z / gl_FragCoord.w;
				const float LOG2 = 1.442695;
				float fogFactor = exp2( - fogDensity * fogDensity * depth * depth * LOG2 );
				fogFactor = 1.0 - clamp( fogFactor, 0.0, 1.0 );

				gl_FragColor = mix( gl_FragColor, vec4( fogColor, gl_FragColor.w ), fogFactor );

			}

		</script>

		<script id="vertexShader" type="x-shader/x-vertex">

			uniform vec2 uvScale;
			varying vec2 vUv;

			void main()
			{

				vUv = uvScale * uv;
				vec4 mvPosition = modelViewMatrix * vec4( position, 1.0 );
				gl_Position = projectionMatrix * mvPosition;

			}

		</script>

		<script type="module">
			import {
				Clock,
				Mesh,
				PerspectiveCamera,
				RepeatWrapping,
				Scene,
				ShaderMaterial,
				TextureLoader,
				TorusBufferGeometry,
				Vector2,
				Vector3,
				WebGLRenderer
			} from "../build/three.module.js";

			import { EffectComposer } from './jsm/postprocessing/EffectComposer.js';
			import { RenderPass } from './jsm/postprocessing/RenderPass.js';
			import { FilmPass } from './jsm/postprocessing/FilmPass.js';
			import { BloomPass } from './jsm/postprocessing/BloomPass.js';

			var container;

			var camera, scene, renderer, composer, clock;

			var uniforms, mesh;

			init();
			animate();

			function init() {

				container = document.getElementById( 'container' );

				camera = new PerspectiveCamera( 35, window.innerWidth / window.innerHeight, 1, 3000 );
				camera.position.z = 4;

				scene = new Scene();

				clock = new Clock();

				var textureLoader = new TextureLoader();

				uniforms = {

					"fogDensity": { value: 0.45 },
					"fogColor": { value: new Vector3( 0, 0, 0 ) },
					"time": { value: 1.0 },
					"uvScale": { value: new Vector2( 3.0, 1.0 ) },
					"texture1": { value: textureLoader.load( 'textures/lava/cloud.png' ) },
					"texture2": { value: textureLoader.load( 'textures/lava/lavatile.jpg' ) }

				};

				uniforms[ "texture1" ].value.wrapS = uniforms[ "texture1" ].value.wrapT = RepeatWrapping;
				uniforms[ "texture2" ].value.wrapS = uniforms[ "texture2" ].value.wrapT = RepeatWrapping;

				var size = 0.65;

				var material = new ShaderMaterial( {

					uniforms: uniforms,
					vertexShader: document.getElementById( 'vertexShader' ).textContent,
					fragmentShader: document.getElementById( 'fragmentShader' ).textContent

				} );

				mesh = new Mesh( new TorusBufferGeometry( size, 0.3, 30, 30 ), material );
				mesh.rotation.x = 0.3;
				scene.add( mesh );

				//

				renderer = new WebGLRenderer( { antialias: true } );
				renderer.setPixelRatio( window.devicePixelRatio );
				container.appendChild( renderer.domElement );
				renderer.autoClear = false;


				//

				var renderModel = new RenderPass( scene, camera );
				var effectBloom = new BloomPass( 1.25 );
				var effectFilm = new FilmPass( 0.35, 0.95, 2048, false );

				composer = new EffectComposer( renderer );

				composer.addPass( renderModel );
				composer.addPass( effectBloom );
				composer.addPass( effectFilm );

				//

				onWindowResize();

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

			}

			function onWindowResize() {

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

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

			}

			//

			function animate() {

				requestAnimationFrame( animate );

				render();

			}

			function render() {

				var delta = 5 * clock.getDelta();

				uniforms[ "time" ].value += 0.2 * delta;

				mesh.rotation.y += 0.0125 * delta;
				mesh.rotation.x += 0.05 * delta;

				renderer.clear();
				composer.render( 0.01 );

			}

		</script>

	</body>
</html>