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I am currently working on some virtual remotes for my home automation system.

This will involve images of remote buttons before and after pressing. To make it clear, I would like the face of the button to also be shaded darker when pressed.

I currently have a node group that combine a button texture with the operation icon and this takes as input the image of the operation (eg the Home icon) and the UV maps that separate out uv of the texture and the icon.

enter image description here

enter image description here

I have 2 questions:

  1. What can I do to simply add such shading (just darkening)
  2. How can I make it so that this is passed in as an optional shading, thus allowing the node group to be used for standard buttons and the depressed shaded versions
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  • $\begingroup$ You can add a Mix (Color) node and use the Multiply or Darken option to darken the material. The Fac input is your switch (0=normal, 1=darken). $\endgroup$
    – Blunder
    Commented Jan 31 at 16:16

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