Specular Maps

For all the users of Twilight Render (V1 & V2), to ask questions and get started
olishea
Posts: 768
Joined: Mon Sep 21, 2009 8:54 am

Specular Maps

Post by olishea » Wed Sep 30, 2009 10:40 am

So what's the best way of making a specmap from a texture? Any good advice out there?

A lot of tutorials have conflicting methods.

Suggestions?
Oli

Solo
Posts: 225
Joined: Tue Aug 25, 2009 4:32 pm

Re: Specular Maps

Post by Solo » Wed Sep 30, 2009 10:47 am

What image editor do you use?

I have a method using Paintshop pro.

olishea
Posts: 768
Joined: Mon Sep 21, 2009 8:54 am

Re: Specular Maps

Post by olishea » Wed Sep 30, 2009 1:18 pm

Photoshop. I have gimp but I hardly use it.
Oli

Phil Meadows
Posts: 52
Joined: Thu Sep 17, 2009 10:06 am

Re: Specular Maps

Post by Phil Meadows » Wed Sep 30, 2009 2:03 pm

Solo, give us your method. I use Corel Photo-paint but they all have the same basic and intermediate tools. Terminology is different but that can be overcome.
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olishea
Posts: 768
Joined: Mon Sep 21, 2009 8:54 am

Re: Specular Maps

Post by olishea » Wed Sep 30, 2009 2:18 pm

Just a general help would do. I don't understand the colours and how they affect the type of reflection......
Oli

Ecuadorian
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Re: Specular Maps

Post by Ecuadorian » Wed Sep 30, 2009 2:28 pm

I think reflection maps act as a multiplier of the reflection channel.
That is, the whiter the color, the more intense mirror-like reflections you get for those parts. Black parts in the reflection map mean there's no mirror-like reflection there.

Pg09
Posts: 150
Joined: Wed Aug 26, 2009 3:20 pm
Location: Trinidad

Re: Specular Maps

Post by Pg09 » Wed Sep 30, 2009 3:13 pm

Oh so spec map = reflection map? I learn something every day :)
Cheers,

Adam

Fletch
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Re: Specular Maps

Post by Fletch » Wed Sep 30, 2009 4:15 pm

We used the term "Reflection Map" because new users who have never used any other rendering application don't know and likely don't care what "specular map" means... so, apologies to the advanced users, but we wanted to keep it simple.

This is explained hopefully quite clearly in the reference section of the user manual in the overview of how Reflection maps work in Twilight.

White= 100% specular reflection
Black= zero specular reflection
and in-between is a percentage of in-between.

The specular map can contain color. This will define the color that will be given to the specular reflection. This is demonstrated in the Intermediate Video tutorial.

olishea
Posts: 768
Joined: Mon Sep 21, 2009 8:54 am

Re: Specular Maps

Post by olishea » Wed Sep 30, 2009 6:34 pm

You should have just written read the manual :P :P :P

im a fool!
Oli

Fletch
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Re: Specular Maps

Post by Fletch » Wed Sep 30, 2009 6:36 pm

I've written that several times today... :rtfm: starting to give up... :lol: just kidding! I'm not even close to giving up. ;)

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