Use precise occlusion queries where possible
Use precise occlusion queries where possible

* Since we only want boolean results this shouldn't be necessary but it may work
  around some driver issues and give more reliable results.

baldurk/renderdoc,baldurk/renderdoc,baldurk/renderdoc,baldurk/renderdoc,baldurk/renderdoc,Zorro666/renderdoc,Zorro666/renderdoc,Zorro666/renderdoc,baldurk/renderdoc,Zorro666/renderdoc,Zorro666/renderdoc,Zorro666/renderdoc