Occlusion Culling - Problems adjusting the areas

Unity Engine
1

Hi,

I have a couple of problems with occlusion culling. In my scene, a user in a 1st person view walks around a submarine, starting from the exterior (on a dock).

The exterior isn’t static. This was done because I don’t want to cull it. 95% of the scene is interior and for performance purposes the culling has to be from a low value far clip inside.

The problems (see attached image):

  • The exterior gets culled when walking on specific points on the exterior of the sub. (1st image)
  • The occl. areas don’t seem to work properly. In visualization mode, you can seem them going very high in the Y for no reason, there are no static objects in the air and the areas are clearly inside. (2nd 3rd images)

Preview / production modes have same results.
High / low cell size have same results.
Is Target Volume is disabled.
Is View Volume is enabled.

Thanks for any help.

408299--14121--$OcclusionCulling.jpg
408299--14121--$OcclusionCulling.jpg1346×600 96.7 KB

2

Is it possible that my scaling is off? Using 3ds max to create the scenes, 1 unit = 1 meter.

So inside Unity, I set the scaling from 0.01 to 1. Does it influences the occl. areas calculations?