examples/webgl_postprocessing_fxaa.html

<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - postprocessing - FXAA 3.11</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: #61443e;
				font-family:Monospace;
				font-size:13px;
				text-align:center;

				/* background-color: #bfd1e5; */
				background-color: #ffffff;
				margin: 0px;
			}

			a {	color: #a06851;	}

			canvas {
				margin: 20px;
				margin-top: 40px;
			}

		</style>
	</head>
	<body>

        <div id="info">
            <p><a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> - FXAA example </p>
            <p>original image (left) - FXAA 3.11 post-processing antialiasing (right)</p>
			<p>Image source: <a href="https://github.com/mattdesl/glsl-fxaa" target="_blank" rel="noopener">glsl-fxaa by mattdesl</a></p>
        </div>

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


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

		<script src="js/Detector.js"></script>

		<script>

			( function closure() {

				'use strict';

				if ( ! Detector.webgl ) {
					Detector.addGetWebGLMessage();
				}

				var loader = new THREE.TextureLoader();
				loader.load( "textures/fxaa_scene.png", function onLoad( texture ) {
					var image = texture.image;
					texture.minFilter = THREE.LinearFilter;
					texture.magFilter = THREE.LinearFilter;

					var fxaaMaterial = new THREE.ShaderMaterial( THREE.FXAAShader );
					fxaaMaterial.uniforms.tDiffuse.value = texture;
					fxaaMaterial.uniforms.resolution.value.x = 1 / image.naturalWidth;
					fxaaMaterial.uniforms.resolution.value.y = 1 / image.naturalHeight;

					var basicMaterial = new THREE.MeshBasicMaterial( { map: texture } );

					var plane = new THREE.PlaneBufferGeometry( 1, 1 );

					var quad1 = new THREE.Mesh( plane, basicMaterial );
					var quad2 = new THREE.Mesh( plane, fxaaMaterial );
					var scene1 = new THREE.Scene();
					var scene2 = new THREE.Scene();
					scene1.add( quad1 );
					scene2.add( quad2 );

					var camera = new THREE.OrthographicCamera( -0.5, 0.5, 0.5, -0.5, -0.5, 0.5 );

					var container = document.getElementById( 'container' );


					var renderer1 = new THREE.WebGLRenderer();
					renderer1.setPixelRatio( window.devicePixelRatio );
					renderer1.setSize( image.naturalWidth, image.naturalHeight );
					container.appendChild( renderer1.domElement );

					var renderer2 = new THREE.WebGLRenderer();
					renderer2.setPixelRatio( window.devicePixelRatio );
					renderer2.setSize( image.naturalWidth, image.naturalHeight );
					container.appendChild( renderer2.domElement );

					renderer1.render( scene1, camera );
					renderer2.render( scene2, camera );
				});
			})();

		</script>
	</body>
</html>