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- <!-- Licensed under a BSD license. See license.html for license -->
- <!DOCTYPE html>
- <html>
- <head>
- <meta charset="utf-8">
- <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes">
- <title>Three.js - Shadertoy - Procedural Texture</title>
- <style>
- html, body {
- height: 100%;
- margin: 0;
- }
- #c {
- width: 100%;
- height: 100%;
- display: block;
- }
- </style>
- </head>
- <body>
- <canvas id="c"></canvas>
- </body>
- <script type="importmap">
- {
- "imports": {
- "three": "../../build/three.module.js"
- }
- }
- </script>
- <script type="module">
- import * as THREE from 'three';
- function main() {
- const canvas = document.querySelector( '#c' );
- const renderer = new THREE.WebGLRenderer( { antialias: true, canvas } );
- const fov = 75;
- const aspect = 2; // the canvas default
- const near = 0.1;
- const far = 5;
- const camera = new THREE.PerspectiveCamera( fov, aspect, near, far );
- camera.position.z = 2;
- const scene = new THREE.Scene();
- const boxWidth = 1;
- const boxHeight = 1;
- const boxDepth = 1;
- const geometry = new THREE.BoxGeometry( boxWidth, boxHeight, boxDepth );
- const fragmentShader = `
- #include <common>
- uniform vec3 iResolution;
- uniform float iTime;
- uniform sampler2D iChannel0;
- // By Daedelus: https://www.shadertoy.com/user/Daedelus
- // license: Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.
- #define TIMESCALE 0.25
- #define TILES 8
- #define COLOR 0.7, 1.6, 2.8
- void mainImage( out vec4 fragColor, in vec2 fragCoord )
- {
- vec2 uv = fragCoord.xy / iResolution.xy;
- uv.x *= iResolution.x / iResolution.y;
- vec4 noise = texture2D(iChannel0, floor(uv * float(TILES)) / float(TILES));
- float p = 1.0 - mod(noise.r + noise.g + noise.b + iTime * float(TIMESCALE), 1.0);
- p = min(max(p * 3.0 - 1.8, 0.1), 2.0);
- vec2 r = mod(uv * float(TILES), 1.0);
- r = vec2(pow(r.x - 0.5, 2.0), pow(r.y - 0.5, 2.0));
- p *= 1.0 - pow(min(1.0, 12.0 * dot(r, r)), 2.0);
- fragColor = vec4(COLOR, 1.0) * p;
- }
- varying vec2 vUv;
- void main() {
- mainImage(gl_FragColor, vUv * iResolution.xy);
- }
- `;
- const vertexShader = `
- varying vec2 vUv;
- void main() {
- vUv = uv;
- gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
- }
- `;
- const loader = new THREE.TextureLoader();
- const texture = loader.load( 'resources/images/bayer.png' );
- texture.minFilter = THREE.NearestFilter;
- texture.magFilter = THREE.NearestFilter;
- texture.wrapS = THREE.RepeatWrapping;
- texture.wrapT = THREE.RepeatWrapping;
- const uniforms = {
- iTime: { value: 0 },
- iResolution: { value: new THREE.Vector3( 1, 1, 1 ) },
- iChannel0: { value: texture },
- };
- const material = new THREE.ShaderMaterial( {
- vertexShader,
- fragmentShader,
- uniforms,
- } );
- function makeInstance( geometry, x ) {
- const cube = new THREE.Mesh( geometry, material );
- scene.add( cube );
- cube.position.x = x;
- return cube;
- }
- const cubes = [
- makeInstance( geometry, 0 ),
- makeInstance( geometry, - 2 ),
- makeInstance( geometry, 2 ),
- ];
- function resizeRendererToDisplaySize( renderer ) {
- const canvas = renderer.domElement;
- const width = canvas.clientWidth;
- const height = canvas.clientHeight;
- const needResize = canvas.width !== width || canvas.height !== height;
- if ( needResize ) {
- renderer.setSize( width, height, false );
- }
- return needResize;
- }
- function render( time ) {
- time *= 0.001; // convert to seconds
- if ( resizeRendererToDisplaySize( renderer ) ) {
- const canvas = renderer.domElement;
- camera.aspect = canvas.clientWidth / canvas.clientHeight;
- camera.updateProjectionMatrix();
- }
- cubes.forEach( ( cube, ndx ) => {
- const speed = 1 + ndx * .1;
- const rot = time * speed;
- cube.rotation.x = rot;
- cube.rotation.y = rot;
- } );
- uniforms.iTime.value = time;
- renderer.render( scene, camera );
- requestAnimationFrame( render );
- }
- requestAnimationFrame( render );
- }
- main();
- </script>
- </html>
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