Author Topic: UVW Randomizer Issue  (Read 949 times)

2022-09-26, 16:42:10
Reply #15

dj_buckley

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That's correct, when you're rotating normal map, it's the same as if you'd rotate mesh normals themselves. No doubt this will give you all sorts of weird illusions. It is best to leave W rotation alone and stick to U, V randomization only when normal maps are involved.

Wow, this is kinda mind-blowing to me. Obvious now that I think about it

haha i had this same realisation when I ran that test today

2022-09-26, 16:49:37
Reply #16

romullus

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I often randomise the rotation of wood but with a Step value of 180.

Good point, but i think that wouldn't mess normal map, since XYZ coordinates would still match UVW.
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2022-09-26, 16:53:54
Reply #17

dj_buckley

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And to be fair, if it did, it would hardly be noticeable as the wood grains I use aren't so dramatic in terms of 'bump' amount.

2022-09-28, 10:01:04
Reply #18

DPS

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I often randomise the rotation of wood but with a Step value of 180.

Good point, but i think that wouldn't mess normal map, since XYZ coordinates would still match UVW.

Yeah I don't see the problem with randomizing the normal map in conjunction with the other maps.

Still a pain in the but that displacement doesn't line up properly.
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