examples/webgl_postprocessing_advanced.html

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	<head>
		<title>three.js webgl - postprocessing</title>
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				color:#fff;
				background-color: rgba( 0, 0, 0, 0.5 );
				position: relative;
				margin: 0 auto -2.1em;
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				width: 550px;
				padding: 5px;
				z-index:100;
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			a { color: red; }
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	<body>

		<div id="info">
			<a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> - webgl postprocessing example -
			<a href="http://g3d.cs.williams.edu/g3d/data10/index.html#mesh19" target="_blank" rel="noopener">Lee Perry-Smith</a> head
		</div>

		<div id="container"></div>

		<script src="../build/three.js"></script>

		<script src="js/shaders/BleachBypassShader.js"></script>
		<script src="js/shaders/ColorifyShader.js"></script>
		<script src="js/shaders/ConvolutionShader.js"></script>
		<script src="js/shaders/CopyShader.js"></script>
		<script src="js/shaders/DotScreenShader.js"></script>
		<script src="js/shaders/FilmShader.js"></script>
		<script src="js/shaders/HorizontalBlurShader.js"></script>
		<script src="js/shaders/SepiaShader.js"></script>
		<script src="js/shaders/VerticalBlurShader.js"></script>
		<script src="js/shaders/VignetteShader.js"></script>

		<script src="js/postprocessing/EffectComposer.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/postprocessing/DotScreenPass.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/loaders/GLTFLoader.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 container, stats;

			var composerScene, composer1, composer2, composer3, composer4;

			var cameraOrtho, cameraPerspective, sceneModel, sceneBG, renderer, mesh, directionalLight;

			var width = window.innerWidth || 2;
			var height = window.innerHeight || 2;

			var halfWidth = width / 2;
			var halfHeight = height / 2;

			var materialColor, material2D, quadBG, quadMask, renderScene;

			var delta = 0.01;

			init();
			animate();

			function init() {

				container = document.getElementById( 'container' );

				//

				cameraOrtho = new THREE.OrthographicCamera( -halfWidth, halfWidth, halfHeight, -halfHeight, -10000, 10000 );
				cameraOrtho.position.z = 100;

				cameraPerspective = new THREE.PerspectiveCamera( 50, width / height, 1, 10000 );
				cameraPerspective.position.z = 900;

				//

				sceneModel = new THREE.Scene();
				sceneBG = new THREE.Scene();

				//

				directionalLight = new THREE.DirectionalLight( 0xffffff );
				directionalLight.position.set( 0, -0.1, 1 ).normalize();
				sceneModel.add( directionalLight );

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

					createMesh( gltf.scene.children[ 0 ].geometry, sceneModel, 100 );

				} );

				//

				var materialColor = new THREE.MeshBasicMaterial( {
					map:  new THREE.TextureLoader().load( "textures/cube/SwedishRoyalCastle/pz.jpg" ),
					depthTest: false
				} );

				quadBG = new THREE.Mesh( new THREE.PlaneBufferGeometry( 1, 1 ), materialColor );
				quadBG.position.z = -500;
				quadBG.scale.set( width, height, 1 );
				sceneBG.add( quadBG );

				//

				var sceneMask = new THREE.Scene();

				quadMask = new THREE.Mesh( new THREE.PlaneBufferGeometry( 1, 1 ), new THREE.MeshBasicMaterial( { color: 0xffaa00 } )  );
				quadMask.position.z = -300;
				quadMask.scale.set( width / 2, height / 2, 1 );
				sceneMask.add( quadMask );

				//

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

				//

				renderer.gammaInput = true;
				renderer.gammaOutput = true;

				//

				container.appendChild( renderer.domElement );

				//

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

				//

				var shaderBleach = THREE.BleachBypassShader;
				var shaderSepia = THREE.SepiaShader;
				var shaderVignette = THREE.VignetteShader;
				var shaderCopy = THREE.CopyShader;

				var effectBleach = new THREE.ShaderPass( shaderBleach );
				var effectSepia = new THREE.ShaderPass( shaderSepia );
				var effectVignette = new THREE.ShaderPass( shaderVignette );
				var effectCopy = new THREE.ShaderPass( shaderCopy );

				effectBleach.uniforms[ "opacity" ].value = 0.95;

				effectSepia.uniforms[ "amount" ].value = 0.9;

				effectVignette.uniforms[ "offset" ].value = 0.95;
				effectVignette.uniforms[ "darkness" ].value = 1.6;

				var effectBloom = new THREE.BloomPass( 0.5 );
				var effectFilm = new THREE.FilmPass( 0.35, 0.025, 648, false );
				var effectFilmBW = new THREE.FilmPass( 0.35, 0.5, 2048, true );
				var effectDotScreen = new THREE.DotScreenPass( new THREE.Vector2( 0, 0 ), 0.5, 0.8 );

				var effectHBlur = new THREE.ShaderPass( THREE.HorizontalBlurShader );
				var effectVBlur = new THREE.ShaderPass( THREE.VerticalBlurShader );
				effectHBlur.uniforms[ 'h' ].value = 2 / ( width / 2 );
				effectVBlur.uniforms[ 'v' ].value = 2 / ( height / 2 );

				var effectColorify1 = new THREE.ShaderPass( THREE.ColorifyShader );
				var effectColorify2 = new THREE.ShaderPass( THREE.ColorifyShader );
				effectColorify1.uniforms[ 'color' ] = new THREE.Uniform( new THREE.Color( 1, 0.8, 0.8 ) );
				effectColorify2.uniforms[ 'color' ] = new THREE.Uniform( new THREE.Color( 1, 0.75, 0.5 ) );

				var clearMask = new THREE.ClearMaskPass();
				var renderMask = new THREE.MaskPass( sceneModel, cameraPerspective );
				var renderMaskInverse = new THREE.MaskPass( sceneModel, cameraPerspective );

				renderMaskInverse.inverse = true;

				//effectFilm.renderToScreen = true;
				//effectFilmBW.renderToScreen = true;
				//effectDotScreen.renderToScreen = true;
				//effectBleach.renderToScreen = true;
				effectVignette.renderToScreen = true;
				//effectCopy.renderToScreen = true;

				//

				var rtParameters = {
					minFilter: THREE.LinearFilter,
					magFilter: THREE.LinearFilter,
					format: THREE.RGBFormat,
					stencilBuffer: true
				};

				var rtWidth  = width / 2;
				var rtHeight = height / 2;

				//

				var renderBackground = new THREE.RenderPass( sceneBG, cameraOrtho );
				var renderModel = new THREE.RenderPass( sceneModel, cameraPerspective );

				renderModel.clear = false;

				composerScene = new THREE.EffectComposer( renderer, new THREE.WebGLRenderTarget( rtWidth * 2, rtHeight * 2, rtParameters ) );

				composerScene.addPass( renderBackground );
				composerScene.addPass( renderModel );
				composerScene.addPass( renderMaskInverse );
				composerScene.addPass( effectHBlur );
				composerScene.addPass( effectVBlur );
				composerScene.addPass( clearMask );

				//

				renderScene = new THREE.TexturePass( composerScene.renderTarget2.texture );

				//

				composer1 = new THREE.EffectComposer( renderer, new THREE.WebGLRenderTarget( rtWidth, rtHeight, rtParameters ) );

				composer1.addPass( renderScene );
				//composer1.addPass( renderMask );
				composer1.addPass( effectFilmBW );
				//composer1.addPass( clearMask );
				composer1.addPass( effectVignette );

				//

				composer2 = new THREE.EffectComposer( renderer, new THREE.WebGLRenderTarget( rtWidth, rtHeight, rtParameters ) );

				composer2.addPass( renderScene );
				composer2.addPass( effectDotScreen );
				composer2.addPass( renderMask );
				composer2.addPass( effectColorify1 );
				composer2.addPass( clearMask );
				composer2.addPass( renderMaskInverse );
				composer2.addPass( effectColorify2 );
				composer2.addPass( clearMask );
				composer2.addPass( effectVignette );

				//

				composer3 = new THREE.EffectComposer( renderer, new THREE.WebGLRenderTarget( rtWidth, rtHeight, rtParameters ) );

				composer3.addPass( renderScene );
				//composer3.addPass( renderMask );
				composer3.addPass( effectSepia );
				composer3.addPass( effectFilm );
				//composer3.addPass( clearMask );
				composer3.addPass( effectVignette );

				//

				composer4 = new THREE.EffectComposer( renderer, new THREE.WebGLRenderTarget( rtWidth, rtHeight, rtParameters ) );

				composer4.addPass( renderScene );
				//composer4.addPass( renderMask );
				composer4.addPass( effectBloom );
				composer4.addPass( effectFilm );
				composer4.addPass( effectBleach );
				//composer4.addPass( clearMask );
				composer4.addPass( effectVignette );

				//

				//onWindowResize();

				renderScene.uniforms[ "tDiffuse" ].value = composerScene.renderTarget2.texture;

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

			}

			function onWindowResize( event ) {

				halfWidth = window.innerWidth / 2;
				halfHeight = window.innerHeight / 2;

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

				cameraOrtho.left = -halfWidth;
				cameraOrtho.right = halfWidth;
				cameraOrtho.top = halfHeight;
				cameraOrtho.bottom = -halfHeight;

				cameraOrtho.updateProjectionMatrix();

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

				composerScene.setSize( halfWidth * 2, halfHeight * 2 );

				composer1.setSize( halfWidth, halfHeight );
				composer2.setSize( halfWidth, halfHeight );
				composer3.setSize( halfWidth, halfHeight );
				composer4.setSize( halfWidth, halfHeight );

				renderScene.uniforms[ "tDiffuse" ].value = composerScene.renderTarget2.texture;

				quadBG.scale.set( window.innerWidth, window.innerHeight, 1 );
				quadMask.scale.set( window.innerWidth / 2, window.innerHeight / 2, 1 );

			}

			function getText( id ) {

				return document.getElementById( id ).textContent;

			}

			function createMesh( geometry, scene, scale ) {

				var mat2 = new THREE.MeshPhongMaterial( {

					color: 0x999999,
					specular: 0x080808,
					shininess: 20,
					map: new THREE.TextureLoader().load( "models/gltf/LeePerrySmith/Map-COL.jpg" ),
					normalMap: new THREE.TextureLoader().load("models/gltf/LeePerrySmith/Infinite-Level_02_Tangent_SmoothUV.jpg" ),
					normalScale: new THREE.Vector2( 0.75, 0.75 )

				} );

				mesh = new THREE.Mesh( geometry, mat2 );
				mesh.position.set( 0, -50, 0 );
				mesh.scale.set( scale, scale, scale );

				scene.add( mesh );

			}

			//

			function animate() {

				requestAnimationFrame( animate );

				stats.begin();
				render();
				stats.end();

			}

			function render() {

				var time = Date.now() * 0.0004;

				if ( mesh ) mesh.rotation.y = -time;

				renderer.setViewport( 0, 0, halfWidth, halfHeight );
				composerScene.render( delta );

				renderer.setViewport( 0, 0, halfWidth, halfHeight );
				composer1.render( delta );

				renderer.setViewport( halfWidth, 0, halfWidth, halfHeight );
				composer2.render( delta );

				renderer.setViewport( 0, halfHeight, halfWidth, halfHeight );
				composer3.render( delta );

				renderer.setViewport( halfWidth, halfHeight, halfWidth, halfHeight );
				composer4.render( delta );

			}

		</script>
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</html>