webgl_postprocessing_msaa.html 4.2 KB

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  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4. <title>three.js webgl - postprocessing manual msaa</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. <style>
  8. body {
  9. margin: 0px;
  10. background-color: #000;
  11. overflow: hidden;
  12. font-family:Monospace;
  13. font-size:13px;
  14. margin: 0px;
  15. text-align:center;
  16. overflow: hidden;
  17. }
  18. #info {
  19. color: #fff;
  20. position: absolute;
  21. top: 10px;
  22. width: 100%;
  23. text-align: center;
  24. display:block;
  25. }
  26. </style>
  27. </head>
  28. <body>
  29. <div id="info">
  30. <a href="http://threejs.org" target="_blank">three.js</a> - Manual Multi-Sample Anti-Aliasing (MSAA) pass by <a href="https://clara.io" target="_blank">Ben Houston</a></br></br>
  31. WARNING: High MSAA samples count will lead</br>to discretization effects when used with 8-bit per channel Render Buffers.
  32. </div>
  33. <div id="container"></div>
  34. <script src="../build/three.min.js"></script>
  35. <script src="js/libs/stats.min.js"></script>
  36. <script src="js/libs/dat.gui.min.js"></script>
  37. <script src="js/postprocessing/MSAAPass.js"></script>
  38. <script src="js/shaders/CopyShader.js"></script>
  39. <script src="js/shaders/CompositeShader.js"></script>
  40. <script src="js/postprocessing/EffectComposer.js"></script>
  41. <script src="js/postprocessing/RenderPass.js"></script>
  42. <script src="js/postprocessing/MaskPass.js"></script>
  43. <script src="js/postprocessing/ShaderPass.js"></script>
  44. <script>
  45. var camera, scene, renderer, composer, copyPass, msaaPass;
  46. var geometry, material, gui, object, stats;
  47. var param = { MSAASampleLevel: 2 };
  48. var textureLoader = new THREE.TextureLoader();
  49. container = document.getElementById( "container" );
  50. stats = new Stats();
  51. stats.domElement.style.position = 'absolute';
  52. stats.domElement.style.top = '0px';
  53. container.appendChild( stats.domElement );
  54. textureLoader.load( "./textures/brick_diffuse.jpg", function( meshTexture ) {
  55. init( meshTexture );
  56. animate();
  57. clearGui();
  58. });
  59. function clearGui() {
  60. if ( gui ) gui.destroy();
  61. gui = new dat.GUI();
  62. var example = gui.add( param, 'MSAASampleLevel', {
  63. 'Level 0: 1 Sample': 0,
  64. 'Level 1: 2 Samples': 1,
  65. 'Level 2: 4 Samples': 2,
  66. 'Level 3: 8 Samples': 3,
  67. 'Level 4: 16 Samples': 4,
  68. 'Level 5: 32 Samples': 5
  69. } ).onFinishChange( function() {
  70. if( massPass ) {
  71. massPass.sampleLevel = param.MSAASampleLevel;
  72. }
  73. } );
  74. gui.open();
  75. }
  76. function init( meshTexture ) {
  77. renderer = new THREE.WebGLRenderer( { antialias: false } );
  78. renderer.setPixelRatio( window.devicePixelRatio );
  79. renderer.setSize( window.innerWidth, window.innerHeight );
  80. document.body.appendChild( renderer.domElement );
  81. camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 1, 1000 );
  82. camera.position.z = 400;
  83. scene = new THREE.Scene();
  84. geometry = new THREE.BoxGeometry( 200, 200, 200 );
  85. material = new THREE.MeshBasicMaterial( { map: meshTexture } );
  86. meshTexture.anisotropy = 0;
  87. object = new THREE.Mesh( geometry, material );
  88. scene.add( object );
  89. // postprocessing
  90. composer = new THREE.EffectComposer( renderer );
  91. massPass = new THREE.MSAAPass( scene, camera );
  92. massPass.sampleLevel = param.MSAASampleLevel;
  93. composer.addPass( massPass );
  94. copyPass = new THREE.ShaderPass( THREE.CopyShader );
  95. copyPass.renderToScreen = true;
  96. composer.addPass( copyPass );
  97. window.addEventListener( 'resize', onWindowResize, false );
  98. }
  99. function onWindowResize() {
  100. var width = window.innerWidth;
  101. var height = window.innerHeight;
  102. camera.aspect = width / height;
  103. camera.updateProjectionMatrix();
  104. renderer.setSize( width, height );
  105. var pixelRatio = renderer.getPixelRatio();
  106. var newWidth = Math.floor( width / pixelRatio ) || 1;
  107. var newHeight = Math.floor( height / pixelRatio ) || 1;
  108. composer.setSize( newWidth, newHeight );
  109. if( msaaPass ) msaaPass.setSize( newWidth, newHeight );
  110. }
  111. function animate() {
  112. requestAnimationFrame( animate );
  113. object.rotation.x += 0.005;
  114. object.rotation.y += 0.01;
  115. composer.render();
  116. stats.update();
  117. }
  118. </script>
  119. <div>
  120. </body>
  121. </html>