4.7.2 "object has degenerate tangent bases"
Now, I am not really a master of 3dsmax or modeling for that matter. But I made a VERY SIMPLE bridge on 3dsmax, and unwrapped it nicely. Though no matter what I do, I get "object has degenerate tangent bases which will result in incorrect shading" error.
The reason I am posting this as bug report is that, the same mesh is completely perfect with zero problems when I import it to 4.6.1
I am also giving the links to download the mesh. It's very small. Like 86 Kbps.
Thank you for your time!
asked Mar 16 '15 at 06:36 PM in Using UE4
I believe this problem is incorrectly being reported by the engine. This for me is generally a problem with the Lightmap UVs that I apply, or forget to update if I add something to my model. I generally when making UVs for texture maps do some things that are not-standard. I like to use repeatable textures, therefore for my texture UVs i often overlap UVs for front and back facing and sides etc.
However, for Lightmap uvs, the UVs associated with making shadows, I auto generate some light map UVs and don't tinker unless I see if my shadows look like they are problems. I use Automatic Mapping for Lightmap UVs and I often scale them in from the edges a little bit to allow for shadow bleed. Again, I don't tinker unless there is a problem.
I don't seem to get errors for my overlapping UVs for texture-maps, but I get errors for Lightmap UVs, or in this case the Degenerate Tangent Bases. Now whether that error appears for other reasons as well, I can't yet say.
answered Jul 03 '15 at 11:31 PM
Hi Achilleon and Danluka,
This is currently being investigated and has been reported with ticket UE-11426.
I've added this post to the ticket and will update when there is any relevant information to pass along.
answered Mar 17 '15 at 02:26 PM
Tim Hobson ♦♦ STAFF
Feel free to go in 3ds max and in the top left of your viewport where you can configure the view, there is a symbol that represents "[ + ]"
Click it and go down to "xView" and hit Overlapping faces. It will highlight degenerate bases (overlapping faces) in green. This saves time and leads you directly to the issue rather than deleting and remaking every face!
Hope this helps!
answered Feb 02 '16 at 06:25 PM
Still no silid answer on this question but and it slis so so. So on this issue i notice this happens whenever you extrude your geonerty weld or etc...
answered May 16 '17 at 12:46 AM
I figured out the issue im not sure about the older versions but it has to do with the uv's some people say ignore i sugest you dont...
answered May 16 '17 at 01:01 AM
Follow this question
Once you sign in you will be able to subscribe for any updates here