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Incorrect texture or material map

Hi All,

I have an issue with a texture or material map of some of imported to UE4 meshes. I create my meshes in 3ds max. The problem has started only recently. Below steps I follow:

In 3ds max:

created a mesh attached all elements to unwrap and export as one mesh unwrapped 2 map channel (image below 'a') exported (image below 'b')

2 in UE4

* imported into UE4 (image below 'c')
alt text

alt text alt text

My issue is seen below, as a map on mesh is very small and chequer is incorrect. Whenever I gonna try to assign material it's pixelating it (not sure what word should I use). alt text When I tried to create a simple box in 3 ds max (in the same file what previous mesh) UE4 is importing it correctly (as below): alt text I'm not allowed to attache another image but material looks ok.

Product Version: UE 4.13
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asked Oct 20 '16 at 08:46 PM in Using UE4

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2 answers: sort voted first

Finally I found a solution to my problem. As MacDx mentioned it was related to my UV map. I focused on a second channel but at the end channel 1 was my main problem.

1st UV channel is usually for standard baked textures to be mapped from

2nd UV channel is for the lightmap.

Whenever I've created UV map in 3ds max for channel 1 &2 I never "Collapse" it and that caused me a problem. If modifier "Unwrap UVW" is not collapsed 3ds max can't save it.

Bellow 3ds max steps for anyone who would have similar problems to mine:

  • when you make your uv on first channel you need to collapse it

  • add unwrap uv modifier again

  • switch to channel 2 and click abandon

  • when you finish with second uv collapse it again.

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answered Oct 23 '16 at 04:42 PM

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The problem are the UVs

alt text

Those UVs are not apt for use. It looks like the default unwrap is separating a lot of tiny faces which is what is causing the problem here. I'm not an expert on 3ds Max but I would suggest doing a box UV mapping of this object and then polish them if needed.

Look at this example

alt text

No tiny faces or vertex by themselves

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answered Oct 21 '16 at 12:51 AM

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avatar image netka99 Oct 21 '16 at 09:15 AM

Thank you for quick respond. I will try to work on my UV map.

avatar image netka99 Oct 21 '16 at 12:35 PM

Hello again.

I've unwrapped again simplified mesh in 3ds max and applied checker. Not sure but in 3ds max seems to look ok. When I export mesh into UE4 have the same issue again on some elements.

alt text

alt text alt text

3dsmax.jpg (197.7 kB)
ue4.jpg (119.2 kB)
ue4_1.jpg (101.4 kB)
avatar image MacDx Oct 21 '16 at 03:51 PM

Hmmm that is so weird. Can you send me the last version of your FBX so I can try it? I would just try multiple importing options.

avatar image netka99 Oct 22 '16 at 11:06 AM

Please find attached my file, thank you for any help. link text

pufa1.zip (3.1 MB)
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