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Why only this object looks like have a high reflection?

Hello, I am trying to build a dungeon

I made some objects and import to UE4

when I take a look of them, there is a object looks like it have a high reflection, and just that object only alt text

even look at the dark side, still so bright alt text

here are the other objects, and i create a plane to display the material of the wall alt text

the textures i used were export form the "urban materials package"

those walls were using the same textures, just different UV map

i tried to add the roughness map of my material

and it seems like the object got wet alt text

i hope you know what i am saying, i am not a native english speaker

i really want how to fix it , thanks :)

Product Version: UE 4.22
reflection.jpg (298.1 kB)
reflection2.jpg (266.3 kB)
materials.jpg (392.9 kB)
reflection3.jpg (294.6 kB)
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asked May 26 '19 at 11:09 AM in Using UE4

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avatar image IndieGameCove May 26 '19 at 12:28 PM

I'm not sure why it looks the way it does, but the texture sample you connected to roughness is wrong. the roughness/ specular/ and AO maps are probably all packed into the rgb of the texture.

avatar image catcat52009 May 26 '19 at 02:00 PM

hm.. sorry, what the different? I'm still a newbie of UE4. The tutorials I saw are just link the textures to the material node.

avatar image IndieGameCove May 27 '19 at 03:53 AM

should look something like the pic I'll link below, except this is a metal material and not brick so your metal value is just 0. https://docs.substance3d.com/spdoc/files/144998459/144998458/1/1467147159592/ue3.png

here's a tutorial on what i'm talking about. https://youtu.be/4-EsLM40_9o

avatar image catcat52009 May 28 '19 at 06:26 AM

i edit my material like your pic using R & B channels. It looks similar as no link of roughness map. Just a little bit darker. https://imgur.com/a/s1QgAuO

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i found the problem myself, there is something wrong of my model.

after i rebuilded the model, the problem is solve alt text

solve.jpg (528.1 kB)
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answered May 26 '19 at 02:50 PM

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