Home Marmoset

What the hell is going on with my roughness texture???

polycounter lvl 7
Offline / Send Message
Kligan polycounter lvl 7
I am super confused. All of a sudden, Marmoset does something weird with roughness channel.

I am working on modular pipes. So far I created two texture sets.
Steel texture set:


And iron texture set:


I made steel textures first in Quixel Mixer. Then I just copied the project and made some changes to color of the base metal layer and intensity of detail normal map, as well as tweaked base roughness values, to make it look like iron pipes.
I saved it, exported texture sets, created new materials in Marmoset, applied the textures, then applied the materials to the mesh... And for some reason it was fine with steel textures, but super shiny with iron textures. 
But ok, whatever, maybe I messed something up. I went back to Mixer, increased roughness level of the base metal and exported again. Now it looks better... But wait, what's going on with the plastic and painted parts?

It looks completely different. Way more shinier on the second texture set. Let's see what's going on with the roughness channel.


The roughness values of the valve cap look completely different! But why?
Let's check in Photoshop.

Sampled areas, corresponding to the part on the screenshots, have exactly the same values. Which means, Mixer exported texture sets correctly. And somehow something gets screwed up in Marmoset.

I tried creating a new scene and importing everything again, creating new materials from scratch - doesn't matter. Same result. It looks different in Marmoset, even though the values on the textures are correct, if I check in Photoshop or in Mixer. But not in Marmoset.
Also you can clearly see that in Marmoset the surface of the pipes themselves has about the same overall roughness value. However, in Photoshop it is clearly different - one is brighter than the other.

I also checked in Unreal, and there everything looks normal:


What is going on with my Marmoset Toolbag? I'm completely lost.

Replies

  • Kligan
    Offline / Send Message
    Kligan polycounter lvl 7
    Ok, I finally figured it out!
    Roughness export set to grayscale in Mixer:

    Both textures are greyscale, when I check them in photoshop.

    HOWEVER, when I create a new material in Marmoset, and apply roughness texture from iron texture set - it toggles sRGB color space for some reason:


    I have no idea why it does that, but obviously if I turn it off, then everything becomes normal.
Sign In or Register to comment.