Why is "Shaded" mode acting like "Ghosted" mode?

For whatever reason, all of a sudden my file decided to allow surface edges to appear through objects in shaded mode. (Rhino 5)

When I am looking at the back wall of my structure, I can see through to the front wall and the mullions appear through. When I go to click on a surface in shaded mode, it acts like ghosted mode and gives me the options to click on the surfaces behind it.

I have tried:

  • restarting / updates to my computer
  • copied and pasted the entire model into a new file
  • selbadobjects (there are none)
  • testzbiasfactor
  • reset defaults in display views
  • refresh shade
  • cleared all meshes
  • the model is at the origin
  • turned off antiliasing, turned it back on
  • top 2 boxes in openGL are checked

I am not sure what the issue is. I have an MSI with 16.0GB RAM, 64-bit operating system, x64-based processor (Intel Core CPU @ 2.80GHz).
The file is only 141mb and my laptop has handled much larger before.


If this is with Rhino 6 you may want to post the result of the Rhino command _SystemInfo, it’ll give some more info that may help with troubleshooting.

Hello - is the scene very large? did it get bigger with the addition of some new geometry either by design or error? What happens if you Zoom Extents, do you see about what you expect?


It is a very large scene, when I zoom extents it captures the entirety of the model.
When i turn off almost all of the layers surrounding my structure (topography, buildings, roads, water surface) the issue becomes a lot less noticeable, but when I zoom in to get close to my structure the surfaces look shaky and disappear into some of the other surfaces.

There are two things that come to mind -

This sounds like the scene is far from the world origin -

Try the testZBiasFactor command -you need to type the whole thing, it will not autocomplete.

Both are outlined here: