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So say I have a texture like this

enter image description here

And I'd like to tile just one quadrant, like this. Using shader-editor nodes, and not touching the UV editor at all.

enter image description here

Without going into the UV Editor and changing the way the UV is laid out, how might I go about cropping into a section of a texture, and repeating that section using ONLY nodes and nothing else?

I've tried this

enter image description here And while it seems to do something similar, it's not quite what I'm looking for. Anybody have anything that should work?

I'm not interested in questions of why I'm doing something like this or alternate solutions that don't involve nodes, as I have a very specific use-case and I've tried to simplify the problem as much as possible to make it easier to answer. This is what I need to do in this situation, I'm just looking for how to make it possible.

Thanks in advance.

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First, you need to calculate the modulo using the section dimensions as divisor. Then, you add the section starting position:

(The values used here are for section A)

Material nodes

In your case, all sections have the same dimensions: (0.5, 0.5), but have different positions, so position is the only thing you will need to change to display other sections:

Changing current section

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  • $\begingroup$ Yup, this is exactly what I needed. Guess what I had was on the right track, I just wasn't using it correctly, or I had it in the wrong place on my actual setup, since it's a bit of a nightmare. $\endgroup$
    – AxiomDes
    May 14, 2022 at 23:15

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