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Re-exporting mesh gives shading issues (n-gon to tris)
I have a CAD mesh that I exported from MOI3D, and when I bring it into Marmoset it seems to have no shading problems which is nice. My problem is when I import that mesh and re-export it out I'll get certain issues that wasn't present before. The left is my re-exported version and the right is what directly came out of… -
Re: Re-exporting mesh gives shading issues (n-gon to tris)
Here is the Toolbag file and the Viewer. The problem shows on any file other than the MOI3D one. https://www.dropbox.com/s/c0q9wib6o0tsola/ToolbagScene.tbscene?dl=0 (Toolbag 4) https://www.dropbox.com/s/joih9fcnkxec6z9/Viewer.mview?dl=0 If I remove custom split normals data it will show like this Then if I average the… -
Re: Re-exporting mesh gives shading issues (n-gon to tris)
Not that I could recreate the issue from exporting from maya or max with objs. but you could try changing the divide larger than export settings in moi, which will help minimise the long thin triangulation -
Re: Re-exporting mesh gives shading issues (n-gon to tris)
Ah I see the difference now. I can't replicate the issue, using the moi exported one and taking it into and out of it from max it was fine I'm guessing you are modifying the normals in some way with import or export settings, or having unlocked normals or maybe allowing Maya to use it's custom normal settings which is on… -
Re: Re-exporting mesh gives shading issues (n-gon to tris)
Since this is a CAD mesh, ngons are unavoidable. I'll run it through a mesh clean up just as a test, but yes I could also redirect it better by just exporting the ngon version from MOI3D and then doing some manual work. It just becomes a lot of work when dealing with any boolean cuts as I have so many vertices to manage… -
Re: Re-exporting mesh gives shading issues (n-gon to tris)
Sadly I re-imported the MOI3D into another real-time engine and I get the problem on other spots. So it seems it has to do with importing causing something to change, then when I export it retains that issue. I tried using Eevee to just check the MOI3D on import If I clear custom split normals It fixes that part, but then… -
Re: Re-exporting mesh gives shading issues (n-gon to tris)
Thanks for the suggestion as this actually works perfect. The work I'm doing is going to be rendered offline so the higher polycount really doesn't matter, and the time saved is great! :astonished: MOI3D is a real life saver for CAD models! Thank you! :) -
Re: Re-exporting mesh gives shading issues (n-gon to tris)
Thankfully MOI3D gives very clean ngon versions. Example file https://www.dropbox.com/s/u2xnvarn1bvzkfy/ngonversion.obj?dl=0 -
Re: Re-exporting mesh gives shading issues (n-gon to tris)
It might be as easy to fix as just joining a few vertexes together on the N-gon manually - and then letting it triangulate automatically. -
Re: Re-exporting mesh gives shading issues (n-gon to tris)
I got the same shading on all of those in both Max and marmoset3. I can't see what the issue is :s .
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