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Water on a surface without using textures
Posted: Thu Oct 13, 2022 1:00 pm
by Andreas Hopf
Using procedurals, one can obtain a fairly realistic simulation of water on a surface with three layers; a material that could be useful to render outdoor products... 1: The Angström effect darkens non-smooth humid and wet surfaces. 2: The relief of a surface gradually disappears under water. 3: A surface remains visible underneath the water if the latter is shallow and is no dirty suspension. 4: Wind can slightly disturb the water and thus the reflections. A problem is simulating tiny stones that might cover a surface, because they will protrude through the water and will be drier or only slightly wet, and not very reflective.
Re: Water on a surface without using textures
Posted: Thu Oct 13, 2022 2:07 pm
by Andreas Hopf
While asphalt, etc. seem straightforward...
...paving stones are hard. They require texture painting as one can see in the reference image.
Re: Water on a surface without using textures
Posted: Thu Oct 13, 2022 3:12 pm
by Forester
Very nice demonstration. Thank you.
Re: Water on a surface without using textures
Posted: Fri Oct 14, 2022 10:39 am
by Mark Bell
Andreas Hopf wrote: ↑Thu Oct 13, 2022 1:00 pm
Using procedurals, one can obtain a fairly realistic simulation of water on a surface with three layers; a material that could be useful to render outdoor products... 1: The Angström effect darkens non-smooth humid and wet surfaces. 2: The relief of a surface gradually disappears under water. 3: A surface remains visible underneath the water if the latter is shallow and is no dirty suspension. 4: Wind can slightly disturb the water and thus the reflections. A problem is simulating tiny stones that might cover a surface, because they will protrude through the water and will be drier or only slightly wet, and not very reflective.
IMPRESSIVE~! ....no need to think about going to another system, judging by your work I'd stay with Maxwell.
....and maybe this could become one of your useful Youtube tutorials
Re: Water on a surface without using textures
Posted: Sat Oct 15, 2022 11:33 pm
by Andreas Hopf
Improved MXM pertaining to the aforementioned four criteria. Here's the MXM
https://www.dropbox.com/sh/g9eczkdltgec ... gDFxa?dl=0, and the asphalt base texture is free at Poliigon
https://www.poliigon.com/texture/city-s ... d-002/2563; the HDR image can be found here
https://hdri-skies.com/hdri-skies/hdri-sky-403/
Now it's about wet pavement, which inevitably means manual texture painting (1 x Angström effect, 1 x water), as is obvious from the reference image above : (
Re: Water on a surface without using textures
Posted: Wed Oct 19, 2022 12:27 am
by Andreas Hopf
Scattered leaves can't appear submerged in areas covered in water. No good.
Using a noise texture with world co-ordinates as density map for a scatter modifier to exclude leaves from areas covered in water instantly crashes MS. Bad.
Re: Water on a surface without using textures
Posted: Wed Oct 19, 2022 10:46 am
by Mark Bell
Thanks for posting this - most helpful.
Re: Water on a surface without using textures
Posted: Sun Oct 23, 2022 10:45 am
by Andreas Hopf
Some tweaks to both materials, asphalt and pavement. Can be useful when rendering outdoor products and no easy HDRI plus backplate solution is available.
