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Re: dark juice

Posted: Wed Aug 14, 2019 10:48 am
by lacilaci
nothing helps... there is no way I can make scattering brighter when inside of glass..
nothinghelps.jpg

Re: dark juice

Posted: Wed Aug 14, 2019 11:08 am
by Sharlybg
remove exterior volume and make emission color a bit brighter until you get the look you want.

Re: dark juice

Posted: Wed Aug 14, 2019 11:11 am
by provisory
Path depth isn't too low?

Re: dark juice

Posted: Wed Aug 14, 2019 11:16 am
by lacilaci
emission doesn't do anthing... :?: but I'm not sure I would want my juice to emit light anyway :D

path depth is 8 for everything and 12 total

I'm starting to think it's not doable.

Re: dark juice

Posted: Wed Aug 14, 2019 11:22 am
by FarbigeWelt
lacilaci wrote: Wed Aug 14, 2019 11:16 am emission doesn't do anthing... :?: but I'm not sure I would want my juice to emit light anyway :D

path depth is 8 for everything and 12 total

I'm starting to think it's not doable.
Maybe it is an issue with Blender 2.80 addon.

Have you tried CPU BiDir, it is kind of reference for volume renders.

Try also adsorption 1 m, scattering 0.1.

Re: dark juice

Posted: Wed Aug 14, 2019 11:27 am
by lacilaci
FarbigeWelt wrote: Wed Aug 14, 2019 11:22 am
lacilaci wrote: Wed Aug 14, 2019 11:16 am emission doesn't do anthing... :?: but I'm not sure I would want my juice to emit light anyway :D

path depth is 8 for everything and 12 total

I'm starting to think it's not doable.
Maybe it is an issue with Blender 2.80 addon.

Have you tried CPU BiDir, it is kind of reference for volume renders.

Try also adsorption 1 m, scattering 0.1.
I'm testing it in 2.79

I tried cpu+bidir and it's the same

the absorption and scattering values you're suggesting are pretty much turning it to water, which works cause almost no scattering is going on, just refraction.

Is there any example of juice or milk or something similar in glass rendered in luxcore?

Re: dark juice

Posted: Wed Aug 14, 2019 11:41 am
by FarbigeWelt
lacilaci wrote: Wed Aug 14, 2019 11:27 am Try also adsorption 1 m, scattering 0.1.


I'm testing it in 2.79

I tried cpu+bidir and it's the same

the absorption and scattering values you're suggesting are pretty much turning it to water, which works cause almost no scattering is going on, just refraction.

Is there any example of juice or milk or something similar in glass rendered in luxcore?
I see. Yes, you are right with the water. Strange that this works but scattering 100 not. Wit scattering 100 you should get a milky yellow liquid in your case. you can also try to adjust asymmetry to get forward scattering with positive values.

priority air 0, glass 10, juice 20.

Re: dark juice

Posted: Wed Aug 14, 2019 11:49 am
by lacilaci
FarbigeWelt wrote: Wed Aug 14, 2019 11:41 am
lacilaci wrote: Wed Aug 14, 2019 11:27 am Try also adsorption 1 m, scattering 0.1.


I'm testing it in 2.79

I tried cpu+bidir and it's the same

the absorption and scattering values you're suggesting are pretty much turning it to water, which works cause almost no scattering is going on, just refraction.

Is there any example of juice or milk or something similar in glass rendered in luxcore?
I see. Yes, you are right with the water. Strange that this works but scattering 100 not.

I think it works cause there's only refraction happening until you turn up scattering.

When you turn on scattering the glass will cast black shadow on the volume. This happens even if you just enable normal(not architectural) glass shader on the juice itself, where juice itself will cast black shadow on it's own volume... I think that's what's the problem here, I don't know.
glassoffset.jpg

Re: dark juice

Posted: Wed Aug 14, 2019 12:09 pm
by Sharlybg
try this one :
juice.jpg
juice.blend
(662.93 KiB) Downloaded 199 times

Re: dark juice

Posted: Wed Aug 14, 2019 12:17 pm
by lacilaci
Sharlybg wrote: Wed Aug 14, 2019 12:09 pm try this one : juice.jpg

juice.blend
interesting, it works.. but I don't know why :D