webgl_shader.html 3.5 KB

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  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4. <title>three.js webgl - shader [Monjori]</title>
  5. <meta charset="utf-8">
  6. <meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
  7. <link type="text/css" rel="stylesheet" href="main.css">
  8. </head>
  9. <body>
  10. <div id="container"></div>
  11. <div id="info"><a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - shader demo. featuring <a href="http://www.pouet.net/prod.php?which=52761" target="_blank" rel="noopener">Monjori by Mic</a></div>
  12. <script id="vertexShader" type="x-shader/x-vertex">
  13. varying vec2 vUv;
  14. void main() {
  15. vUv = uv;
  16. gl_Position = vec4( position, 1.0 );
  17. }
  18. </script>
  19. <script id="fragmentShader" type="x-shader/x-fragment">
  20. varying vec2 vUv;
  21. uniform float time;
  22. void main() {
  23. vec2 p = - 1.0 + 2.0 * vUv;
  24. float a = time * 40.0;
  25. float d, e, f, g = 1.0 / 40.0 ,h ,i ,r ,q;
  26. e = 400.0 * ( p.x * 0.5 + 0.5 );
  27. f = 400.0 * ( p.y * 0.5 + 0.5 );
  28. i = 200.0 + sin( e * g + a / 150.0 ) * 20.0;
  29. d = 200.0 + cos( f * g / 2.0 ) * 18.0 + cos( e * g ) * 7.0;
  30. r = sqrt( pow( abs( i - e ), 2.0 ) + pow( abs( d - f ), 2.0 ) );
  31. q = f / r;
  32. e = ( r * cos( q ) ) - a / 2.0;
  33. f = ( r * sin( q ) ) - a / 2.0;
  34. d = sin( e * g ) * 176.0 + sin( e * g ) * 164.0 + r;
  35. h = ( ( f + d ) + a / 2.0 ) * g;
  36. i = cos( h + r * p.x / 1.3 ) * ( e + e + a ) + cos( q * g * 6.0 ) * ( r + h / 3.0 );
  37. h = sin( f * g ) * 144.0 - sin( e * g ) * 212.0 * p.x;
  38. h = ( h + ( f - e ) * q + sin( r - ( a + h ) / 7.0 ) * 10.0 + i / 4.0 ) * g;
  39. i += cos( h * 2.3 * sin( a / 350.0 - q ) ) * 184.0 * sin( q - ( r * 4.3 + a / 12.0 ) * g ) + tan( r * g + h ) * 184.0 * cos( r * g + h );
  40. i = mod( i / 5.6, 256.0 ) / 64.0;
  41. if ( i < 0.0 ) i += 4.0;
  42. if ( i >= 2.0 ) i = 4.0 - i;
  43. d = r / 350.0;
  44. d += sin( d * d * 8.0 ) * 0.52;
  45. f = ( sin( a * g ) + 1.0 ) / 2.0;
  46. gl_FragColor = vec4( vec3( f * i / 1.6, i / 2.0 + d / 13.0, i ) * d * p.x + vec3( i / 1.3 + d / 8.0, i / 2.0 + d / 18.0, i ) * d * ( 1.0 - p.x ), 1.0 );
  47. }
  48. </script>
  49. <script type="importmap">
  50. {
  51. "imports": {
  52. "three": "../build/three.module.js",
  53. "three/addons/": "./jsm/"
  54. }
  55. }
  56. </script>
  57. <script type="module">
  58. import * as THREE from 'three';
  59. let camera, scene, renderer;
  60. let uniforms;
  61. init();
  62. function init() {
  63. const container = document.getElementById( 'container' );
  64. camera = new THREE.OrthographicCamera( - 1, 1, 1, - 1, 0, 1 );
  65. scene = new THREE.Scene();
  66. const geometry = new THREE.PlaneGeometry( 2, 2 );
  67. uniforms = {
  68. time: { value: 1.0 }
  69. };
  70. const material = new THREE.ShaderMaterial( {
  71. uniforms: uniforms,
  72. vertexShader: document.getElementById( 'vertexShader' ).textContent,
  73. fragmentShader: document.getElementById( 'fragmentShader' ).textContent
  74. } );
  75. const mesh = new THREE.Mesh( geometry, material );
  76. scene.add( mesh );
  77. renderer = new THREE.WebGLRenderer();
  78. renderer.setPixelRatio( window.devicePixelRatio );
  79. renderer.setSize( window.innerWidth, window.innerHeight );
  80. renderer.setAnimationLoop( animate );
  81. container.appendChild( renderer.domElement );
  82. window.addEventListener( 'resize', onWindowResize );
  83. }
  84. function onWindowResize() {
  85. renderer.setSize( window.innerWidth, window.innerHeight );
  86. }
  87. //
  88. function animate() {
  89. uniforms[ 'time' ].value = performance.now() / 1000;
  90. renderer.render( scene, camera );
  91. }
  92. </script>
  93. </body>
  94. </html>