How to apply a specular map using Nodes with Cycles?

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Old 04 April 2013   #1
Question How to apply a specular map using Nodes with Cycles?

Hi all,

Please see the Nodes setup below. As you can see by looking at the render, the Glossy Node is affecting the whole tree, as oppose to using the specular map and affect only what's found in the specular map.




The node setup below is the same except it has a Mapping node just before the Image Texture nodes.

Btw, the above material is one of two materials in a multi material.




This is what my spec map looks like (above).


This is what my texture map looks like (above).
Those red spots under the leafes are the areas I want to add the spec on. The spec map is not for the 3d apples (red spheres). They have their own separate material.

Btw, I am following a tutorial from Andrew Price, The Secrets of Realistic Texturing. The thing with his example, is he's using a diff type of unwrapping: Project from view (Bounds).
It seems that's the only main difference.

Thanks in advance guys,

JDL
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Old 04 April 2013   #2
One very important difference: you are mixing with white, he mixes the map with black. The purpose of this is to dim the map and make the object a little less shiny. You can skip it entirely if you want. (also, depending on the surface you might get better results by sticking your spec map on the glossy node color input and using a fresnel node on mix amount)
 
Old 04 April 2013   #3
Smile

Thanks a bunch for sharing Jason
I'll give it a try as soon as I can.

JDL
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Old 04 April 2013   #4


Jason, is this what you meant?

JDL
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Old 04 April 2013   #5
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