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Underwater Godrays

Unread postPosted: Fri Apr 12, 2019 2:55 pm
by tom_tm
Hi,
I try to achieve godrays underwater effect.
Generally I have problems to get the light streak effect within the volume using environmental lights, also with a distant light.

I attached a scene:
http://www.ayashmi.com/Water_Godrays.zip


Thanks Tom

Re: Underwater Godrays

Unread postPosted: Mon Apr 15, 2019 12:55 pm
by dboude
Hi,

Here is a very simple setup to show you a way to do it.

volume_shard.PNG


Volume_Shard.project
(55.57 KiB) Downloaded 70 times


Cheers ;)

Re: Underwater Godrays

Unread postPosted: Mon Apr 15, 2019 4:37 pm
by dboude
volume_shard_env.png


With an env' and some tunning.

Re: Underwater Godrays

Unread postPosted: Tue Apr 16, 2019 1:38 pm
by tom_tm
Hi Démian,
thanks for sharing. Ah I see, you applied a procedural to the light.
I will share my solution where the water surface generates the streaks later.

Greets Tom

Re: Underwater Godrays

Unread postPosted: Wed Jun 05, 2019 3:05 pm
by tom_tm
Again a volume light based question:
Whenever I use the volume box and try to achieve good visible
rays, rest of the image will get a too misy/milky look.
I know that this might be physical accurate, but I need more ray effect and the
rest should look clean.
Is there a simple trick to get a clearer effect?

Thanks Tom

Re: Underwater Godrays

Unread postPosted: Wed Jun 05, 2019 3:11 pm
by dboude
Hi tom,

Use a textured spot with high exposure and set the density of your volume ultra low. It should do the trick.

Cheers ;)

Re: Underwater Godrays

Unread postPosted: Wed Jun 05, 2019 3:17 pm
by dboude
Here is an example :

Image

GodRays_Strong.project
(43.44 KiB) Downloaded 31 times


Cheers ;)

Re: Underwater Godrays

Unread postPosted: Thu Jun 06, 2019 4:04 pm
by tom_tm
Hi,
thank you, this might do the trick.

Re: Underwater Godrays

Unread postPosted: Tue Jun 18, 2019 12:49 pm
by dane
Demian

Is it possible to get your setup that you can see above, after your tweaking?

I'm doing something very similar

Re: Underwater Godrays

Unread postPosted: Wed Jun 19, 2019 12:01 pm
by dboude
Hi Dane,

I'm on a tour now. I will share it when I come back next week ;)

Cheers