Maya viewport sorting problems. Appears to sort back objects/faces in front.

[jakejSMSHH]

I have a problem with Maya and sorting in my viewport. This is with maya 2017 but my co-worker had the same problem on maya 2011 on a different box.

It appears to draw the mesh behind instead of the front faces. This doesn't happen on a basic object. It isn't until i have multiple planes or meshes in parallax.

It does it in viewport 2.0, Legacy Default, & High quality. Although, High Quality does seem to sort a little better? maybe..

It didn't always do this. I've tried uninstalling and re-installing maya and still no fix. 

I don't have any third party plugins. 

Backface culling makes no difference.

Tried updating and rolling back video drivers.

Any help would be appreciated.

[mspeer]

Hi

Could you please upload a scene where this occurs.

[jakejSMSHH]

Sure. Here is a section of that object.

Thanks for checking it out.

[mspeer]

Hi!

There are many problems with your object.

1. a) It is a single combined object which contains more than 400* separate pieces of geometry with holes and intersecting faces. (*see second dark grey object in Screenshot below where i have done only Mesh -> Separate)

2. The transparency value of your materials has a value of 0.001 and is therefore handled like a transparent object.

The corresponding solutions:

1. Clean up your model or set Transparency Algorithm to Depth Peeling.

2. In Hardware Renderer 2.0 Settings set Transparency Algorithm to Depth Peeling, or remove the transparency on your materials by setting the transparency value to 0.

I highly recommend to clean up your model, you will not get any realistic rendering with this and even for game engines you waste polygons and will run into problems with multiple intersections without distinct front and backside for your model.

[mspeer · Accepted solution]

Hi!

In short: The main problem is the transparency value of 0.001 in your materials. You can fix this by re-setting the transparency to 0 ( or by changing your Transparency Algorithm in Viewport 2.0 from Object Sorting to Depth Peeling).