pixelate-shader/example/index.html at master · robertcasanova/pixelate-shader · GitHub

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<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>Pixelate Shader - Example</title>
    <style>
      body {
        margin:0;
        overflow: hidden;
      }
    </style>
  </head>
  <body>


    <script src="../node_modules/three/build/three.min.js"></script>
    <script src="../node_modules/three/examples/js/postprocessing/EffectComposer.js"></script>
    <script src="../node_modules/three/examples/js/postprocessing/RenderPass.js"></script>
    <script src="../node_modules/three/examples/js/postprocessing/MaskPass.js"></script>
    <script src="../node_modules/three/examples/js/postprocessing/ShaderPass.js"></script>
    <script src="../node_modules/three/examples/js/shaders/CopyShader.js"></script>
    <script src="../js/shaders/PixelateShader.js"></script>
    <script>
          var camera, scene, renderer;

          var mesh;

          var postprocessing = {};

          init();
          animate();

          function init() {

            camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 1, 1000 );
            camera.position.z = 400;

            scene = new THREE.Scene();

            var geometry = new THREE.BoxBufferGeometry( 200, 200, 200 );
            var material = new THREE.MeshLambertMaterial({
              color: 0xff0000
            });

            var directionalLight = new THREE.DirectionalLight( 0xffffff, 1 );
            directionalLight.position.set( 1, 0, 1 ).normalize();
            scene.add( directionalLight );

            mesh = new THREE.Mesh( geometry, material );
            scene.add( mesh );

            renderer = new THREE.WebGLRenderer();
            renderer.setPixelRatio( window.devicePixelRatio );
            renderer.setSize( window.innerWidth, window.innerHeight );

            // postprocessing
            composer = new THREE.EffectComposer( renderer );
            composer.addPass( new THREE.RenderPass( scene, camera ) );

            effect = new THREE.ShaderPass( THREE.PixelateShader );
            effect.uniforms[ 'intensity' ].value = 0.0;
            effect.uniforms['u_resolution'] = {
                type: "v2", value: new THREE.Vector2()
            }
            effect.renderToScreen = true;
            composer.addPass( effect );

            postprocessing.composer = composer;
            postprocessing.effect = effect;

            //

            document.body.appendChild( renderer.domElement );
            //
            onWindowResize();
            window.addEventListener( 'resize', onWindowResize, false );
          }

          function onWindowResize() {
            camera.aspect = window.innerWidth / window.innerHeight;
            camera.updateProjectionMatrix();
            postprocessing.composer.setSize( window.innerWidth, window.innerHeight );

            //update uniforms
            postprocessing.effect.uniforms['u_resolution'].value.x = renderer.domElement.width;
            postprocessing.effect.uniforms['u_resolution'].value.y = renderer.domElement.height;

          }
          function animate() {
            requestAnimationFrame( animate );
            mesh.rotation.x += 0.005;
            mesh.rotation.y += 0.01;
            postprocessing.composer.render( scene, camera );
          }
        </script>
  </body>
</html>