title: what does bake do in SceneKit
body: <p>What is the purpose of "bake" option in SceneKit editor. Does it have an impact on performance?
  <a href="https://i.stack.imgur.com/1WKDv.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/1WKDv.png" alt="enter image description here"></a></p>
  
  <p>Type offers 2 options: Ambient Occlusion and Light Map</p>
  
  <p>Destination offers: Texture and Vertex</p>