I would like to add the emission shader to the green parts of this texture. How would I do that? Edit: How do I make a mask from this texture
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1$\begingroup$ You should create a mask texture that is all black except for the emitting parts which should be white $\endgroup$– Duarte Farrajota Ramos ♦Commented Aug 6, 2017 at 23:49
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1$\begingroup$ Your going to want something lie this: imgur.com/a/8fcEJ I did this in photoshop, just select the colour range of green and then converted all of the green parts to white and put it over a black background. $\endgroup$– masterj2001Commented Aug 7, 2017 at 1:16
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$\begingroup$ May the dragon consume you! ;) Any reason the green areas do not have their own material? My first guess is that you have a geometry limit. $\endgroup$– GusdorCommented Aug 7, 2017 at 11:46
1 Answer
First of all you'll need a map that will define the areas where light is being emitted from, like this: Then to mask it over the diffuse map you'll need to create a simple node setup where you use the new texture to control the way two shaders mix, the white areas will use one shader, the dark ones the other one:
(You don't have to use a diffuse node, I just used it for the example) Your final result should be something like this: Obviously yours will be on the actual model. Hope this helps.