feature request: volumetric lighting

[juan]

hi everyone, is it possible for this renderer to do volumetric lighting ?

thanks

[radiance]

Hi,

Volumetric lighting and SSS which is something that builds on the volumetrics feature will be available in the v2.0 version.
We would like to have a solid foundation with v1.0 first before we develop volumetrics...

Yours,
Radiance

[n1k]

Do you also plan to create some kind of sss aproximation material which would be very usefull for creating fast rendered foliage materials (thin geometry leafs), curtains materials etc. ?

Cheers,
n1k

[radiance]

You can use the diffuse material's transmission channel for this.
it's not connected by default, but if you hook up a diffuse material node and connect a RGBspectrum to it's 2nd pin (the circular one),
you can control the diffuse transmission, which gives a pseudo-sss like translucency usefull for cloth and leaves etc...

Radiance

[n1k]

Tnx alot:) Very usefull feature to me. Glad it's already here:). I'm very big fan of nice looking foliage. Gonna do some foliage related tests now:) heheh

[n1k]

Here is result from simple test . I created plane and put some object in front of it. The plane has diffuse material set up as radiance suggested. Translucency effect is very subtle and I thik it would be a bit more pronounced if there was some direct source of light(sun for example:) )

This setup is ok for cloth and paper like materials, but what about leafs which need to be glossy? Can similar thing be done with a glossy material as well?

[radiance]

not with the current version,
you'll have to wait a bit for the next release

Radiance

[n1k]

Cool:) Tnx

[Tugpsx]

@n1k can you post your graph setup. Just trying to clarify how you got the pusdo SSS effect

[n1k]

Sure. This time i used hdri with sunny sky(in first test was octane_studio1.hdr) and rotated it so that sun is in front of the plane. Pathtracing needs to be enabled.

Hope this helps.

Cheers,
n1k