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<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">
<style>
body {
color: #ffffff;
font-family:Monospace;
font-size:13px;
text-align:center;
font-weight: bold;
background-color: #000000;
margin: 0px;
overflow: hidden;
}
#info {
position: absolute;
top: 0px; width: 100%;
padding: 5px;
}
a {
color: #ffffff;
}
#oldie a { color:#da0 }
</style>
</head>
<body>
<div id="container"></div>
<div id="info"><a href="http://threejs.org" target="_blank">three.js</a> - shader material demo. featuring lava shader by <a href="http://irrlicht.sourceforge.net/phpBB2/viewtopic.php?t=21057" target="_blank">TheGameMaker</a></div>
<script src="../build/three.min.js"></script>
<script src="js/shaders/ConvolutionShader.js"></script>
<script src="js/shaders/CopyShader.js"></script>
<script src="js/shaders/FilmShader.js"></script>
<script src="js/postprocessing/EffectComposer.js"></script>
<script src="js/postprocessing/ShaderPass.js"></script>
<script src="js/postprocessing/MaskPass.js"></script>
<script src="js/postprocessing/RenderPass.js"></script>
<script src="js/postprocessing/BloomPass.js"></script>
<script src="js/postprocessing/FilmPass.js"></script>
<script src="js/Detector.js"></script>
<script src="js/libs/stats.min.js"></script>
<script id="fragmentShader" type="x-shader/x-fragment">
uniform float time;
uniform vec2 resolution;
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>
if ( ! Detector.webgl ) Detector.addGetWebGLMessage();
var container, stats;
var clock = new THREE.Clock();
var camera, scene, renderer, composer;
var uniforms, material, mesh;
var mouseX = 0, mouseY = 0,
lat = 0, lon = 0, phy = 0, theta = 0;
var width = window.innerWidth || 2;
var height = window.innerHeight || 2;
var windowHalfX = width / 2;
var windowHalfY = height / 2;
init();
animate();
function init() {
container = document.getElementById( 'container' );
camera = new THREE.PerspectiveCamera( 35, windowHalfX / windowHalfY, 1, 3000 );
camera.position.z = 4;
scene = new THREE.Scene();
uniforms = {
fogDensity: { type: "f", value: 0.45 },
fogColor: { type: "v3", value: new THREE.Vector3( 0, 0, 0 ) },
time: { type: "f", value: 1.0 },
resolution: { type: "v2", value: new THREE.Vector2() },
uvScale: { type: "v2", value: new THREE.Vector2( 3.0, 1.0 ) },
texture1: { type: "t", value: THREE.ImageUtils.loadTexture( "textures/lava/cloud.png" ) },
texture2: { type: "t", value: THREE.ImageUtils.loadTexture( "textures/lava/lavatile.jpg" ) }
};
uniforms.texture1.value.wrapS = uniforms.texture1.value.wrapT = THREE.RepeatWrapping;
uniforms.texture2.value.wrapS = uniforms.texture2.value.wrapT = THREE.RepeatWrapping;
var size = 0.65;
material = new THREE.ShaderMaterial( {
uniforms: uniforms,
vertexShader: document.getElementById( 'vertexShader' ).textContent,
fragmentShader: document.getElementById( 'fragmentShader' ).textContent
} );
mesh = new THREE.Mesh( new THREE.TorusGeometry( size, 0.3, 30, 30 ), material );
mesh.rotation.x = 0.3;
scene.add( mesh );
//
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setPixelRatio( window.devicePixelRatio );
container.appendChild( renderer.domElement );
renderer.autoClear = false;
//
stats = new Stats();
stats.domElement.style.position = 'absolute';
stats.domElement.style.top = '0px';
//container.appendChild( stats.domElement );
//
var renderModel = new THREE.RenderPass( scene, camera );
var effectBloom = new THREE.BloomPass( 1.25 );
var effectFilm = new THREE.FilmPass( 0.35, 0.95, 2048, false );
effectFilm.renderToScreen = true;
composer = new THREE.EffectComposer( renderer );
composer.addPass( renderModel );
composer.addPass( effectBloom );
composer.addPass( effectFilm );
//
onWindowResize();
window.addEventListener( 'resize', onWindowResize, false );
}
function onWindowResize( event ) {
uniforms.resolution.value.x = window.innerWidth;
uniforms.resolution.value.y = window.innerHeight;
renderer.setSize( window.innerWidth, window.innerHeight );
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
composer.reset();
}
//
function animate() {
requestAnimationFrame( animate );
render();
stats.update();
}
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>