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Re: Specular in UDK Shaders
So how the hell do I separate out those specular terms? Say I want to fake some sub-surface scattering cheaply with a wide, soft spec using a slightly brighter color as the spec color, or a surface that flouresces when light falls on it (large spec highlight, relatively low spec power, bright neon spec color)? You can't do… -
Re: Specular in UDK Shaders
In UDK, plugging a specular texture into the specular slot uses the spec texture as spec level and spec color. In Spec Power, it's common to plug in a constant (or para for instances) to control this. It behaves as Gloss, or making that spec highlight smaller the higher the number goes. -
Re: Specular in UDK Shaders
From what i know you use a lerp for the spec power. The gloss map goes into the Alpha of the lerp then you make 2 constant nodes plugin the highest spec value in A and the lowest in B. I belive thats how it works. -
Re: Specular in UDK Shaders
Pictures would really help here... It's a bit hard to tell what you're doing wrong with the specular. spec power is from 0-100 so you'll need to add a multiply node with a large value (eg 50) to get a normal highlight. Oh and I'd suggest having a look at the existing materials that are in the example levels that come with… -
Specular in UDK Shaders
Having some trouble getting the two specular slots to behave the way I want them to in UDK. By my understanding, Specular should be specular color, and with a texture map plugged into it, should control the per-pixel color of any specular highlight. Specular power should be just that, a grayscale map that controls the… -
Re: Specular in UDK Shaders
I'm sure it is, I just can't make it work. Assume user error for now... :poly142: With a little more experimenting, I have gotten some noticeable color in the specular highlights, but I'm still not getting much of a distinct per-pixel response from the highlight itself. It almost looks like it's calculating the highlight… -
Re: Specular in UDK Shaders
if you really want 2 seperate maps controlling the specular use a b&w map that multiplies over your full color map as input, but its rather stupid as using a 0,0,255 blue and weakening it by 50% with a multiply is the same as just using 0,0,128 - if its easier for you to set it up this way you could do both maps, multiply… -
Re: Specular in UDK Shaders
I'm gonna fire up UDK and check I haven't used it for a while so I'm rusty in my brain as to what can or cannot be done. -
Re: Specular in UDK Shaders
What you have described is sounding quite possible with the unreal shader editor or did I miss something important?
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