mrdoob · mrdoob · Dec 8, 2021 · Dec 5, 2021 · Dec 5, 2021 · Dec 5, 2021
diff --git a/examples/files.json b/examples/files.json
@@ -190,6 +190,7 @@
 		"webgl_panorama_equirectangular",
 		"webgl_performance",
 		"webgl_performance_static",
+		"webgl_performance_shader",
 		"webgl_points_billboards",
 		"webgl_points_dynamic",
 		"webgl_points_sprites",

diff --git a/examples/screenshots/webgl_performance_shader.jpg b/examples/screenshots/webgl_performance_shader.jpg
diff --git a/examples/webgl_performance_shader.html b/examples/webgl_performance_shader.html
@@ -0,0 +1,259 @@
+<!DOCTYPE html>
+<html lang="en">
+	<head>
+		<title>three.js webgl - materials - shaders [lava]</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="container"></div>
+		<div id="info"><a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - shader material demo. featuring lava shader by <a href="http://irrlicht.sourceforge.net/phpBB2/viewtopic.php?t=21057" target="_blank" rel="noopener">TheGameMaker</a></div>
+
+		<script id="fragmentShader" type="x-shader/x-fragment">
+
+			uniform float time;
+
+			uniform float fogDensity;
+			uniform vec3 fogColor;
+
+			uniform sampler2D texture1;
+			uniform sampler2D texture2;
+
+			varying vec2 vUv;
+
+			void main( void ) {
+
+				vec2 position = - 1.0 + 2.0 * vUv;
+
+				vec4 noise = texture2D( texture1, vUv );
+				vec2 T1 = vUv + vec2( 1.5, - 1.5 ) * time * 0.02;
+				vec2 T2 = vUv + vec2( - 0.5, 2.0 ) * time * 0.01;
+
+				T1.x += noise.x * 2.0;
+				T1.y += noise.y * 2.0;
+				T2.x -= noise.y * 0.2;
+				T2.y += noise.z * 0.2;
+
+				float p = texture2D( texture1, T1 * 2.0 ).a;
+
+				vec4 color = texture2D( texture2, T2 * 2.0 );
+				vec4 temp = color * ( vec4( p, p, p, p ) * 2.0 ) + ( color * color - 0.1 );
+
+				if( temp.r > 1.0 ) { temp.bg += clamp( temp.r - 2.0, 0.0, 100.0 ); }
+				if( temp.g > 1.0 ) { temp.rb += temp.g - 1.0; }
+				if( temp.b > 1.0 ) { temp.rg += temp.b - 1.0; }
+
+				gl_FragColor = temp;
+
+				float depth = gl_FragCoord.z / gl_FragCoord.w;
+				const float LOG2 = 1.442695;
+				float fogFactor = exp2( - fogDensity * fogDensity * depth * depth * LOG2 );
+				fogFactor = 1.0 - clamp( fogFactor, 0.0, 1.0 );
+
+				gl_FragColor = mix( gl_FragColor, vec4( fogColor, gl_FragColor.w ), fogFactor );
+
+			}
+
+		</script>
+
+		<script id="vertexShader" type="x-shader/x-vertex">
+
+			uniform vec2 uvScale;
+			varying vec2 vUv;
+
+			void main()
+			{
+
+				vUv = uvScale * uv;
+				vec4 mvPosition = modelViewMatrix * vec4( position, 1.0 );
+				gl_Position = projectionMatrix * mvPosition;
+
+			}
+
+		</script>
+
+		<script type="module">
+
+			import * as THREE from '../build/three.module.js';
+
+			import { EffectComposer } from './jsm/postprocessing/EffectComposer.js';
+			import { RenderPass } from './jsm/postprocessing/RenderPass.js';
+			import { FilmPass } from './jsm/postprocessing/FilmPass.js';
+			import { BloomPass } from './jsm/postprocessing/BloomPass.js';
+			import Stats from './jsm/libs/stats.module.js';
+
+			let camera, renderer, composer, clock, scene;
+
+			let uniforms, stats;
+			const materials = [];
+
+			init();
+			animate();
+
+			function init() {
+
+				const container = document.getElementById( 'container' );
+
+				camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 1, 3000 );
+				camera.position.z = 7;
+
+				scene = new THREE.Scene();
+
+				clock = new THREE.Clock();
+
+				const textureLoader = new THREE.TextureLoader();
+
+				uniforms = {
+
+					'fogDensity': { value: 0.001 },
+					'fogColor': { value: new THREE.Vector3( 0, 0, 0 ) },
+					'time': { value: 1.0 },
+					'uvScale': { value: new THREE.Vector2( 3.0, 1.0 ) },
+					'texture1': { value: textureLoader.load( 'textures/lava/cloud.png' ) },
+					'texture2': { value: textureLoader.load( 'textures/lava/lavatile.jpg' ) }
+
+				};
+
+				uniforms[ 'texture1' ].value.wrapS = uniforms[ 'texture1' ].value.wrapT = THREE.RepeatWrapping;
+				uniforms[ 'texture2' ].value.wrapS = uniforms[ 'texture2' ].value.wrapT = THREE.RepeatWrapping;
+
+
+				//
+
+				renderer = new THREE.WebGLRenderer( { antialias: true } );
+				renderer.setPixelRatio( window.devicePixelRatio );
+				container.appendChild( renderer.domElement );
+				renderer.autoClear = false;
+	            renderer.info.autoReset = false;
+
+				//
+
+				const renderModel = new RenderPass( scene, camera );
+				const effectBloom = new BloomPass( 1.25 );
+				const effectFilm = new FilmPass( 0.35, 0.95, 2048, false );
+
+				composer = new EffectComposer( renderer );
+
+				composer.addPass( renderModel );
+				composer.addPass( effectBloom );
+				composer.addPass( effectFilm );
+
+				//
+
+				stats = new Stats();
+				container.appendChild( stats.dom );
+
+				onWindowResize();
+
+
+				window.addEventListener( 'resize', onWindowResize );
+
+			}
+
+			function onWindowResize() {
+
+				camera.aspect = window.innerWidth / window.innerHeight;
+				camera.updateProjectionMatrix();
+
+				renderer.setSize( window.innerWidth, window.innerHeight );
+				composer.setSize( window.innerWidth, window.innerHeight );
+				addMeshes();
+
+			}
+
+			function removeAllMeshes() {
+
+				for ( var i = scene.children.length - 1; i >= 0; i -- ) {
+
+					const obj = scene.children[ i ];
+					scene.remove( obj );
+
+				}
+
+			}
+
+			function addMeshes() {
+
+				removeAllMeshes();
+				//reset pseudorandom number
+				THREE.MathUtils.seededRandom( 1 );
+
+				const projScreenMatrix = new THREE.Matrix4();
+				const frustum = new THREE.Frustum();
+				camera.updateMatrixWorld();
+				projScreenMatrix.multiplyMatrices( camera.projectionMatrix, camera.matrixWorldInverse );
+				frustum.setFromProjectionMatrix( projScreenMatrix );
+
+				const size = 0.65;
+	            let meshesCount = 0;
+				while ( meshesCount < 2500 ) {
+
+					const material = new THREE.ShaderMaterial( {
+
+						uniforms: uniforms,
+						vertexShader: document.getElementById( 'vertexShader' ).textContent,
+						fragmentShader: document.getElementById( 'fragmentShader' ).textContent
+
+					} );
+
+
+					const mesh = new THREE.Mesh( new THREE.TorusGeometry( size, 0.3, 30, 30 ), material );
+
+					mesh.position.x = THREE.MathUtils.seededRandom() * 20 - 10;
+					mesh.position.y = THREE.MathUtils.seededRandom() * 20 - 10;
+					mesh.position.z = THREE.MathUtils.seededRandom() * 20 - 10;
+					mesh.rotation.x = THREE.MathUtils.seededRandom() * 2 * Math.PI;
+					mesh.rotation.y = THREE.MathUtils.seededRandom() * 2 * Math.PI;
+					mesh.scale.x = mesh.scale.y = mesh.scale.z = THREE.MathUtils.seededRandom() * .2 + 0.1;
+
+					mesh.updateMatrixWorld();
+
+					if ( frustum.intersectsObject( mesh ) ) {
+
+						// mesh.rotation.x = 0.3;
+						materials.push( material );
+						scene.add( mesh );
+						meshesCount ++;
+
+					}
+
+				}
+
+}
+
+			//
+
+			function animate() {
+
+				requestAnimationFrame( animate );
+
+				render();
+				stats.update();
+
+			}
+
+			function render() {
+
+				materials.forEach( ( material ) => {
+
+					material.needsUpdate = true;
+
+				} );
+
+				const delta = 5 * clock.getDelta();
+
+				uniforms[ 'time' ].value += 0.2 * delta;
+
+				renderer.clear();
+				composer.render( 0.01 );
+	            console.log( renderer.info.render.calls );
+	            renderer.info.reset();
+
+}
+
+		</script>
+
+	</body>
+</html>