Volume FOG request

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Volume FOG request

Postby Jolbertoquini » Thu Jul 20, 2017 4:20 pm

Jolbertoquini Thu Jul 20, 2017 4:20 pm
Hi Guys,

I did some test with the volume fog based on the V-ray scene of this feature https://www.youtube.com/watch?v=xQMnNM6q5YM I fell would be great to have a extra option,I realise sometimes we want just the fog from the direct lights with no GI if I set no Diffuse bounce I get the result of only direct lights would be good to have a option like "ignore GI" this would be a great option still good but I guess this way we could have a quick and clean fog and enough quality for us.

Right know we render as a pass with no GI to add in comp, but this would make the workflow quicker and get straight from the render.

Please let me know if is possible?

Cheers,
JO

Here some renders:
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Re: Volume FOG request

Postby coilbook » Sat Jul 22, 2017 1:47 am

coilbook Sat Jul 22, 2017 1:47 am
++++1
I hope otoy will make features like a simple volume fog from light without any mediums etc, spot light etc. I know their render engine is very real life like but all these features like other render engines have is a must
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Re: Volume FOG request

Postby Tag12345 » Sat Jul 22, 2017 8:22 am

Tag12345 Sat Jul 22, 2017 8:22 am
The problem with Octane is that it cheats in many ways to have this stuff.


Cheats with fog by having volumes (which is still very hard to use properly unless youre very advanced with Octane)


Cheats with textures, using Mix textures and portals,etc


Cheats with AO -- using dirt shader to fake it



There is so much faking done to avoid the actual HEAD on issues that its ridiculous.


But yes, bump plz
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Re: Volume FOG request

Postby VVG » Sun Jul 23, 2017 6:04 pm

VVG Sun Jul 23, 2017 6:04 pm
Tag12345 wrote:Cheats with AO -- using dirt shader to fake it


Hi, Can show an example with the settings?
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Re: Volume FOG request

Postby Jolbertoquini » Mon Jul 24, 2017 9:46 am

Jolbertoquini Mon Jul 24, 2017 9:46 am
VVG wrote:
Tag12345 wrote:Cheats with AO -- using dirt shader to fake it


Hi, Can show an example with the settings?


Hi WG,

yes of corse, so is all about the scene scale, for me I use maya plug so 1 maya unit is equal of 1cm buy by default they set 1m (pointless default settings, I know Octane standalone is 1 unit=1meter)
so I set scenes scale "0.01" for me at the sunsky node the medium radius was "10" (by default is et 1 one other pointless settings cause doesn't match on the real life size)
As volume setting pretty simple settings, I going to put a list here:

Scene scale on render settings: "0.01" (cause maya works at cm)
octaneSunSky settings : a strong power for the light bounce so power "20" with day light.
Medium radius at "10"

and the volume node I set at:

Absorption "0" with the tag "invert abs" activated
Scattering set "1"
phase "0" ( this setting many people was changing but is all about scale to me I didn't use because my scene scale is right with my medium radius)
and Scale at volume node I set 0.1
vol step len at "4".

This all my settings I will get the scene exported at standalone for you to see. I did a lot contrast and post-FX at imager

Cheers,
JO
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Re: Volume FOG request

Postby Jolbertoquini » Mon Jul 24, 2017 9:54 am

Jolbertoquini Mon Jul 24, 2017 9:54 am
Here the Orbx scene,

So as I said I did some mess on the imager/postprocessor to match Vray's example, but you can see the Idea, Usually I render separated and comp then so I can have a volume without GI to get look ( I know is fake but render faster)
here is set in one. Of course is a quick test.

Cheers,
JO
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Re: Volume FOG request

Postby Jolbertoquini » Mon Jul 24, 2017 11:23 am

Jolbertoquini Mon Jul 24, 2017 11:23 am
Hi Guys,

Also I find this stuff here the guys use the technics of deep opacity and get really nice clean volumes most be interesting I think.

https://vimeo.com/20863998
https://github.com/prideout/fluidsim
http://prideout.net/blog/?p=69
here the doc paper concepts:
http://www.cemyuksel.com/research/deepopacity/


Cheers,
JO
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Re: Volume FOG request

Postby VVG » Mon Jul 24, 2017 11:50 am

VVG Mon Jul 24, 2017 11:50 am
Thanks JO for the example.

I hope that in the new version of the octane 3,07 the fake Godrays/volume light will be fast .
Win 10x64, AMD 1950x 16C/32T, RAM 32Gb, EVGA GTX 1080Ti + 1070, Octane-for-C4D 4.x.x, RS 2.6.x, Cy4D 1.321. Nvidia 419.67
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Re: Volume FOG request

Postby Jolbertoquini » Mon Jul 24, 2017 5:18 pm

Jolbertoquini Mon Jul 24, 2017 5:18 pm
VVG wrote:Thanks JO for the example.

I hope that in the new version of the octane 3,07 the fake Godrays/volume light will be fast .


No worries, yes hope to from my side aswell would be just great.

Best,
JO
Octane Render for Maya.
https://vimeo.com/jocg/videos
https://www.linkedin.com/in/jocgtd
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Re: Volume FOG request

Postby Jolbertoquini » Tue Oct 03, 2017 11:50 am

Jolbertoquini Tue Oct 03, 2017 11:50 am
Jolbertoquini wrote:Hi Guys,

Also I find this stuff here the guys use the technics of deep opacity and get really nice clean volumes most be interesting I think.

https://vimeo.com/20863998
https://github.com/prideout/fluidsim
http://prideout.net/blog/?p=69
here the doc paper concepts:
http://www.cemyuksel.com/research/deepopacity/


Cheers,
JO



Hi Guys,

This from July any FLY on this from any Developer, just for us to know if your are looking at if is possible or not? sort of some answer please?

Best,
JO
Octane Render for Maya.
https://vimeo.com/jocg/videos
https://www.linkedin.com/in/jocgtd
http://www.hmxmedia.com/
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