Is it possible to texture-paint with a boolean modifier?

Support Materials and Textures
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1

Screenshot_17
Screenshot_17779×583 265 KB

This is my high-poly with a spherical boolean modifier. I’m aware that if the boolean object and the boolean’d object has the same material, that material will show where the boolean is cutting.

However, if i texture paint on the boolean, that texture painting does not show on the high poly cut-out. It only applies the color of one pixel at (0,0) of the UV on the boolean object.

Is it not possible for me to do a workflow where i can paint details on the booleans and it will show on the high-poly? Does it only work with one color, one metalness value, one roughness value, and so on? For example if I were to draw a green line in the centre of the sphere, could that green line show up on the high-poly?

2

It seems possible if it is in the same UV location.
But I don’t know if it’s possible to get it to the exact location.

3

In the Boolean Modifier > Solver Options > set Materials = Transfer.
Solver needs to be exact.

Bool Texture
Bool Texture915×497 357 KB

That is 2 materials, with 1 being painted on.

4

Here is a quick video on Booleans and Different textures … it is using Kitops but will work with plain objects and boolean operations just as well…

5

Screenshot_19
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Worked on new testscene. Can’t for the life of me figure out why it doesn’t work on my high-poly. Good to know it can work at least.

EDIT: Fixed it now, so a quirk with this. The name of the UV-Map of the target must match the name of the boolean object’s UV map