Changing the reflectance doesn't seem to be doing anything??

Zepic

I have a question about the reflectance values.

Currently I'm working with the UE4 calibration profile.

When I assign a megascan metal preset, say dirty steel, and then right click on the reflectance value square, none of the reflectance values seem to change. Is this a bug?




I selected brass, but the metal reflectance values remain white. Shouldn't they change more to an orange type color?

Zepic

To add to all this (I'M using the GOLD preset for this example):

I added a specular map and now it looks like it's showing the correct gold spec:




Here's a regular Albedo added. It looks too brown? I'm not sure what's going on here:




And here's Albedo for Metalness. I'm confused how this albedo works. What if I have a texture that has metal and non metal; would I just NOT use this option?

Zepic

I've been experimenting and it seems like I should plug my Specular into the Base Color slot (UE4) to get the texture to look correct. The Albedo values generated by DDO just seem way off.
Does anybody know why?

ZacD

In the metalness workflow, metal's reflectance comes from it's base color, because metals don't need an albedo value. So in UE4 the base color is metal's reflectance and non-metal's albedo combined into one texture, it's a bit weird, but it saves texture memory.

Zepic

Thanks for the reply ZacD. Gathering from what you wrote, I'm assuming Albedo for Metalness in DDO isn't working correctly then?

Shouldn't the Albedo be a slightly yellow color, not plain white?

Edit: (or are you suppose to plug the specular map into the Base Color in UE4?)

ZacD

If you material is pure metal, you can plug the specular into the base color and that should be correct.

I'm not quite sure how Quixel -> UE4 is supposed to work.

Zepic

ZacD wrote: »

I'm not quite sure how Quixel -> UE4 is supposed to work.

You and me both.

Eric Ramberg

Teddy is looking in to this to see if everything is working correctly! I'll get back to you!

Zepic

Eric Ramberg wrote: »

Teddy is looking in to this to see if everything is working correctly! I'll get back to you!

Thanks.