So im wondering, is this something i do inside of substance or something i would do in a renderer or games engine, lets say im making it want to look abit like a light saber from Faller Order example below.
![Image: https://us.v-cdn.net/5021068/uploads/editor/or/acy71e1kvy3z.jpg](https://us.v-cdn.net/5021068/uploads/editor/or/acy71e1kvy3z.jpg)
What would one have too do to get an effect like this too save out as Emisive maps for Marmoset im using a PBR based workflow right now but this is the results im getting with two mixed textures one light one dark with less emmisstion?
![Image: https://us.v-cdn.net/5021068/uploads/editor/c2/25dl01u111ya.jpg](https://us.v-cdn.net/5021068/uploads/editor/c2/25dl01u111ya.jpg)
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