How to make specular maps?

[Nutulator]

Hi, I'd like to know how would you exactly map specular maps? Fallout 4 specular maps aren't like others I've seen--the red, green, and blue channels are a bit confusing.

 

Here is my diffuse texture--what would I need to do to it, to make it game ready?

 

 

 

 

 

I have Gimp and AwesomeBump.

 

Thanks.

Edited October 26, 2016 by Nutulator

[EveningTide]

They define the objects shininess in light/dark areas.

 

http://wiki.splashdamage.com/index.php/Specular_Maps

 

Nevermind. I see you know what they are and how to make them(for other games). Yes Beth's modeling team took a different approach with FO4.

Edited October 24, 2016 by EveningTide

[RaffTheSweetling]

I believe, like the normal maps, you need to use the option 3D filter in Photoshop CS6 Extended (filters>3D) and select specular map or normal map from the items in that option list. My CS6 lacks 3D filter options, so I can't tell you how to do it myself, but YouTube has tutorials.

[Nutulator]

Thanks for the replies, guys.

 

I found the alpha channels right next to the layer tabs, how could I miss that... this is why you shouldn't mod when you're sick!

 

Apparently the RGB channels are used for the specularity, this little guide helped.