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webgl_postprocessing_masking.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webgl - postprocessing - masking</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 {
background-color: #000;
margin: 0px;
overflow: hidden;
}
</style>
</head>
<body>
<div id="container"></div>
<script src="../build/three.js"></script>
<script src="js/shaders/CopyShader.js"></script>
<script src="js/postprocessing/EffectComposer.js"></script>
<script src="js/postprocessing/ClearPass.js"></script>
<script src="js/postprocessing/TexturePass.js"></script>
<script src="js/postprocessing/ShaderPass.js"></script>
<script src="js/postprocessing/MaskPass.js"></script>
<script src="js/WebGL.js"></script>
<script src="js/libs/stats.min.js"></script>
<script>
if ( WEBGL.isWebGLAvailable() === false ) {
document.body.appendChild( WEBGL.getWebGLErrorMessage() );
}
var composer, renderer;
var box, torus;
init();
animate();
function init() {
var camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 1, 1000 );
camera.position.z = 10;
var scene1 = new THREE.Scene();
var scene2 = new THREE.Scene();
box = new THREE.Mesh( new THREE.BoxBufferGeometry( 4, 4, 4 ) );
scene1.add( box );
torus = new THREE.Mesh( new THREE.TorusBufferGeometry( 3, 1, 16, 32 ) );
scene2.add( torus );
renderer = new THREE.WebGLRenderer();
renderer.setClearColor( 0xe0e0e0 );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
renderer.autoClear = false;
document.body.appendChild( renderer.domElement );
//
var clearPass = new THREE.ClearPass();
var clearMaskPass = new THREE.ClearMaskPass();
var maskPass1 = new THREE.MaskPass( scene1, camera );
var maskPass2 = new THREE.MaskPass( scene2, camera );
var texture1 = new THREE.TextureLoader().load( 'textures/758px-Canestra_di_frutta_(Caravaggio).jpg' );
texture1.minFilter = THREE.LinearFilter;
var texture2 = new THREE.TextureLoader().load( 'textures/2294472375_24a3b8ef46_o.jpg' );
var texturePass1 = new THREE.TexturePass( texture1 );
var texturePass2 = new THREE.TexturePass( texture2 );
var outputPass = new THREE.ShaderPass( THREE.CopyShader );
var parameters = {
minFilter: THREE.LinearFilter,
magFilter: THREE.LinearFilter,
format: THREE.RGBFormat,
stencilBuffer: true
};
var renderTarget = new THREE.WebGLRenderTarget( window.innerWidth, window.innerHeight, parameters );
composer = new THREE.EffectComposer( renderer, renderTarget );
composer.addPass( clearPass );
composer.addPass( maskPass1 );
composer.addPass( texturePass1 );
composer.addPass( clearMaskPass );
composer.addPass( maskPass2 );
composer.addPass( texturePass2 );
composer.addPass( clearMaskPass );
composer.addPass( outputPass );
}
function animate() {
requestAnimationFrame( animate );
var time = performance.now() * 0.001;
box.position.x = Math.cos( time / 1.5 ) * 2;
box.position.y = Math.sin( time ) * 2;
box.rotation.x = time;
box.rotation.y = time / 2;
torus.position.x = Math.cos( time ) * 2;
torus.position.y = Math.sin( time / 1.5 ) * 2;
torus.rotation.x = time;
torus.rotation.y = time / 2;
renderer.clear();
composer.render( time );
}
</script>
</body>
</html>