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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - postprocessing manual taa and ssaa</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="info">
			<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - Temporal Anti-Aliasing (TAA) pass by <a href="https://clara.io" target="_blank" rel="noopener">Ben Houston</a><br/><br/>
			When there is no motion in the scene, the TAA render pass accumulates jittered camera samples<br/>
			across frames to create a high quality anti-aliased result.<br/><br/>
			Texture interpolation, mipmapping and anistropic sampling is disabled to emphasize<br/> the effect SSAA levels have one the resulting render quality.
		</div>

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

		<script type="importmap">
			{
				"imports": {
					"three": "../build/three.module.js",
					"three/addons/": "./jsm/"
				}
			}
		</script>

		<script type="module">

			import * as THREE from 'three';

			import Stats from 'three/addons/libs/stats.module.js';
			import { GUI } from 'three/addons/libs/lil-gui.module.min.js';

			import { EffectComposer } from 'three/addons/postprocessing/EffectComposer.js';
			import { RenderPass } from 'three/addons/postprocessing/RenderPass.js';
			import { TAARenderPass } from 'three/addons/postprocessing/TAARenderPass.js';
			import { OutputPass } from 'three/addons/postprocessing/OutputPass.js';

			let camera, scene, renderer, composer, taaRenderPass, renderPass;
			let gui, stats;
			let index = 0;

			const param = { TAAEnabled: '1', TAASampleLevel: 0 };

			init();

			clearGui();

			function clearGui() {

				if ( gui ) gui.destroy();

				gui = new GUI();

				gui.add( param, 'TAAEnabled', {
					'Disabled': '0',
					'Enabled': '1'
				} ).onFinishChange( function () {

					if ( taaRenderPass ) {

						taaRenderPass.enabled = ( param.TAAEnabled === '1' );
						renderPass.enabled = ( param.TAAEnabled !== '1' );

					}

				} );

				gui.add( param, 'TAASampleLevel', {
					'Level 0: 1 Sample': 0,
					'Level 1: 2 Samples': 1,
					'Level 2: 4 Samples': 2,
					'Level 3: 8 Samples': 3,
					'Level 4: 16 Samples': 4,
					'Level 5: 32 Samples': 5
				} ).onFinishChange( function () {

					if ( taaRenderPass ) {

						taaRenderPass.sampleLevel = param.TAASampleLevel;

					}

				} );

				gui.open();

			}

			function init() {

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

				renderer = new THREE.WebGLRenderer();
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				renderer.setAnimationLoop( animate );
				document.body.appendChild( renderer.domElement );

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

				//

				camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 1, 1000 );
				camera.position.z = 300;

				scene = new THREE.Scene();

				const geometry = new THREE.BoxGeometry( 120, 120, 120 );
				const material1 = new THREE.MeshBasicMaterial( { color: 0xffffff, wireframe: true } );

				const mesh1 = new THREE.Mesh( geometry, material1 );
				mesh1.position.x = - 100;
				scene.add( mesh1 );

				const texture = new THREE.TextureLoader().load( 'textures/brick_diffuse.jpg' );
				texture.minFilter = THREE.NearestFilter;
				texture.magFilter = THREE.NearestFilter;
				texture.anisotropy = 1;
				texture.generateMipmaps = false;
				texture.colorSpace = THREE.SRGBColorSpace;

				const material2 = new THREE.MeshBasicMaterial( { map: texture } );

				const mesh2 = new THREE.Mesh( geometry, material2 );
				mesh2.position.x = 100;
				scene.add( mesh2 );

				// postprocessing

				composer = new EffectComposer( renderer );

				taaRenderPass = new TAARenderPass( scene, camera );
				taaRenderPass.unbiased = false;
				composer.addPass( taaRenderPass );

				renderPass = new RenderPass( scene, camera );
				renderPass.enabled = false;
				composer.addPass( renderPass );

				const outputPass = new OutputPass();
				composer.addPass( outputPass );

				window.addEventListener( 'resize', onWindowResize );

			}

			function onWindowResize() {

				const width = window.innerWidth;
				const height = window.innerHeight;

				camera.aspect = width / height;
				camera.updateProjectionMatrix();

				renderer.setSize( width, height );
				composer.setSize( width, height );

			}

			function animate() {

				index ++;

				if ( Math.round( index / 200 ) % 2 === 0 ) {

					for ( let i = 0; i < scene.children.length; i ++ ) {

						const child = scene.children[ i ];

						child.rotation.x += 0.005;
						child.rotation.y += 0.01;

					}

					if ( taaRenderPass ) taaRenderPass.accumulate = false;

				} else {

					if ( taaRenderPass ) taaRenderPass.accumulate = true;

				}

				composer.render();

				stats.update();

			}

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