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Adding bump offset after texture sample?

polycounter lvl 6
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Kligan polycounter lvl 6
I have this setup in my material for emissive color:

The thing that bothers me is that both texture samplers are using the same mask texture. One is green channel that needs bump offset. The other is red channel that doesn't need bump offset.

I know it's not a big deal, but it looks janky. Can I use just one texture sample and somehow apply bump offset to green channel only?


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