samien
/
three.js
oglindă de https://github.com/mrdoob/three.js.git


			
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337
							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - Multiple Render Targets MultiSampled</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">

		<!-- Write to G-Buffer -->
		<script id="gbuffer-vert" type="x-shader/x-vertex">
			in vec3 position;
			in vec3 normal;
			in vec2 uv;

			out vec3 vNormal;
			out vec2 vUv;

			uniform mat4 modelViewMatrix;
			uniform mat4 projectionMatrix;
			uniform mat3 normalMatrix;

			void main() {

				vUv = uv;

				// get smooth normals
				vec4 mvPosition = modelViewMatrix * vec4( position, 1.0 );

				vec3 transformedNormal = normalMatrix * normal;
				vNormal = normalize( transformedNormal );

				gl_Position = projectionMatrix * mvPosition;

			}
		</script>
		<script id="gbuffer-frag" type="x-shader/x-fragment">
			precision highp float;
			precision highp int;

			layout(location = 0) out vec4 gColor;
			layout(location = 1) out vec4 gNormal;

			uniform sampler2D tDiffuse;
			uniform vec2 repeat;

			in vec3 vNormal;
			in vec2 vUv;

			void main() {

				// write color to G-Buffer
				gColor = texture( tDiffuse, vUv * repeat );

				// write normals to G-Buffer
				gNormal = vec4( normalize( vNormal ), 0.0 );

			}
		</script>

		<!-- Read G-Buffer and render to screen -->
		<script id="render-vert" type="x-shader/x-vertex">
			in vec3 position;
			in vec2 uv;

			out vec2 vUv;

			uniform mat4 modelViewMatrix;
			uniform mat4 projectionMatrix;

			void main() {

				vUv = uv;
				gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );

			}
		</script>
		<script id="render-frag" type="x-shader/x-fragment">
			precision highp float;
			precision highp int;

			layout(location = 0) out vec4 pc_FragColor;

			in vec2 vUv;

			uniform sampler2D tDiffuse;
			uniform sampler2D tNormal;

			void main() {

				vec3 diffuse = texture( tDiffuse, vUv ).rgb;
				vec3 normal = texture( tNormal, vUv ).rgb;

				pc_FragColor = vec4(vec3(0.), 1.);
				pc_FragColor.rgb += mix( diffuse, normal, step( 0.5, vUv.x ) );

			}
		</script>

	</head>
	<body>
		<div id="info">
			<a href="http://threejs.org" target="_blank">threejs</a> - WebGL - Multiple Render Targets Multisampled<br/>
			Created by <a href="http://twitter.com/onirenaud" target="_blank">@onirenaud</a> with the help of <a href="http://twitter.com/Cody_J_Bennett" target="_blank">@Cody_J_Bennett</a>.
		</div>
		<div id="container">
		</div>
		<!-- Import maps polyfill -->
		<!-- Remove this when import maps will be widely supported -->
		<script async src="https://unpkg.com/es-module-shims@1.3.6/dist/es-module-shims.js"></script>

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

		<script type="module">

			import * as THREE from 'three';

			import WebGL from './jsm/capabilities/WebGL.js';
			import { OrbitControls } from './jsm/controls/OrbitControls.js';
			import { GUI } from './jsm/libs/lil-gui.module.min.js';
			import Stats from './jsm/libs/stats.module.js';

			let camera, scene, renderer, controls, container, group;
			let renderTarget;
			let postScene, postCamera;
			let stats;

			const clock = new THREE.Clock();
			// Create a multi render target with Float buffers
			const gui = new GUI();

			const effectController = {
				msaa: true
			};

			init();
			gui.add( effectController, 'msaa', true ).onChange( () => {

				renderTarget.samples = effectController.msaa ? 4 : 0;
				render();

			} );

			function init() {

				container = document.getElementById( 'container' );

				if ( WebGL.isWebGL2Available() === false ) {

					document.body.appendChild( WebGL.getWebGL2ErrorMessage() );
					return;

				}

				renderer = new THREE.WebGLRenderer();
				renderer.setPixelRatio( 1 );
				renderer.setSize( window.innerWidth, window.innerHeight );
				container.appendChild( renderer.domElement );

				stats = new Stats();
				stats.domElement.style.position = 'absolute';
				stats.domElement.style.top = '0px';
				container.appendChild( stats.domElement );


				renderTarget = new THREE.WebGLMultipleRenderTargets(
					window.innerWidth,
					window.innerHeight,
					2,
					{
						samples: effectController.msaa ? 4 : 0,
						depthBuffer: true,
						stencilBuffer: true,
					}
				);

				for ( let i = 0, il = renderTarget.texture.length; i < il; i ++ ) {

					renderTarget.texture[ i ].minFilter = THREE.NearestFilter;
					renderTarget.texture[ i ].magFilter = THREE.NearestFilter;

				}
				// Name our G-Buffer attachments for debugging

				renderTarget.texture[ 0 ].name = 'diffuse';
				renderTarget.texture[ 1 ].name = 'normal';

				// Scene setup

				scene = new THREE.Scene();
				scene.fog = new THREE.Fog( 0xa0a0a0, 500, 2000 );

				const groundMat = new THREE.MeshBasicMaterial( { color: 0xffffff, transparent: true } );
				groundMat.onBeforeCompile = function ( shader ) {

					shader.fragmentShader = `
						layout(location = 1) out vec4 gOther;
						${shader.fragmentShader}
					`;
					shader.fragmentShader = shader.fragmentShader.replace(
						'#include <fog_fragment>',
						`
						#include <fog_fragment>
						gOther = gl_FragColor;
						`
					);

				};

				const ground = new THREE.Mesh( new THREE.PlaneGeometry( 10000, 10000 ), groundMat );
				ground.position.y = - 100;
				ground.rotation.x = - Math.PI / 2;
				scene.add( ground );
				scene.background = new THREE.Color( 0xa0a0a0 );

				container = document.getElementById( 'container' );

				camera = new THREE.PerspectiveCamera( 45, container.offsetWidth / container.offsetHeight, 1, 2000 );
				camera.position.z = 500;

				const diffuse = new THREE.TextureLoader().load(

					'textures/brick_diffuse.jpg'

				);

				diffuse.wrapS = diffuse.wrapT = THREE.RepeatWrapping;

				group = new THREE.Group();

				const geometry = new THREE.TorusKnotGeometry( 10, 3.3, 12, 32 );
			
				for ( let i = 0; i < 10; i ++ ) {

					const material = new THREE.RawShaderMaterial( {
						vertexShader: document.querySelector( '#gbuffer-vert' ).textContent.trim(),
						fragmentShader: document.querySelector( '#gbuffer-frag' ).textContent.trim(),
						uniforms: {
							tDiffuse: { value: diffuse },
							repeat: { value: new THREE.Vector2( 5, 0.5 ) }
						},
						wireframe: i % 2 === 0,
						glslVersion: THREE.GLSL3
					} );

					const mesh = new THREE.Mesh( geometry, material );
					mesh.position.x = ( i / 10 ) * 600 - 300;
					mesh.position.y = ( i / 10 ) * 200 - 100;
					mesh.position.z = Math.random() * 600 - 300;
					mesh.rotation.x = Math.random();
					mesh.rotation.z = Math.random();
					mesh.scale.setScalar( Math.random() * 5 + 5 );
					group.add( mesh );


				}

				scene.add( group );
				// PostProcessing setup

				postScene = new THREE.Scene();
				postCamera = new THREE.OrthographicCamera( - 1, 1, 1, - 1, 0, 1 );

				postScene.add( new THREE.Mesh(
					new THREE.PlaneGeometry( 2, 2 ),
					new THREE.RawShaderMaterial( {
						vertexShader: document.querySelector( '#render-vert' ).textContent.trim(),
						fragmentShader: document.querySelector( '#render-frag' ).textContent.trim(),
						uniforms: {
							tDiffuse: { value: renderTarget.texture[ 0 ] },
							tNormal: { value: renderTarget.texture[ 1 ] },
						},
						glslVersion: THREE.GLSL3
					} )
				) );

				// Controls

				controls = new OrbitControls( camera, renderer.domElement );
				controls.addEventListener( 'change', render );
				controls.enableZoom = false;
				controls.screenSpacePanning = true;


				window.addEventListener( 'resize', onWindowResize );

				animate();

			}

			function onWindowResize() {

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

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

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

				render();

			}

			function render() {

				// render scene into target
				renderer.setRenderTarget( renderTarget );
				renderer.render( scene, camera );

				// render post FX
				renderer.setRenderTarget( null );
				renderer.render( postScene, postCamera );

			}

			function animate() {

				requestAnimationFrame( animate );

				controls.update();

				group.rotation.y += clock.getDelta() * 0.1;

				stats.update();
				render();

			}

		</script>

	</body>
</html>