title: Update function on Three.js
body: <p>How make an Update function in Three.js, like in Unity3d?
  I mean, that i create an object:</p>
  
  <p>var torus = new THREE.Mesh(
            new THREE.TorusKnotGeometry(60,20,100),
            reflectionMaterial
          );</p>
  
  <p>and when i click on the body, i change a reflectionMaterial. But the image don't change, i see  a not changed reflectionMaterial (last figure). Always redrawing a render image???
  Thank's for attention. Sorry for my English (I'm from Ukrainian).</p>
  
  <p>P.S.: I work with Three.js onn my netbook and on (not my) notebook. On netbook i don't see a shaders. Why?? Did the Three.js support Shader Model number 3 and 0?</p>