title: Why does SceneKit use same shadow map on multiple spotlights when using Metal
body: <p>I set up a scene in the scene editor with three spotlights. The first one is pointing on object which casts a shadow. The other spotlights render the same shadow. Is there some limit in Metal or some setting I'm missing? This does not happen when using OpenGL.</p>
  
  <p><a href="https://i.stack.imgur.com/daHaB.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/daHaB.jpg" alt="enter image description here"></a></p>