emissive material scattering

[sirogi77]

Hi all,

Trying to get fastSSS to scatter some emissive materials (think bright led sources embedded in something... fat, skin, fluid..)

Test image shows 2 separate cylinders, lit with one area light.
thin cylinder with vray light mtl (hot green) intersecting a fatter cylinder that has a blend between:

base: stripes of the same vray lightMtl (hot green)
coat material: FastSSS material set to default "pink skin"

(basically trying it both ways: to test inter-object scattering and single-object, multiple materials)
also tried putting the color blend upstream from the fastSSS and plug it into scatter color and subsurf color, to no avail (as opposed to blending 2 materials).

update: switching the single scattering to raytraced, seemed to work for the inter-object scattering.... that, and -not- using RT
still no luck with the texture based approach.

any and all ideas welcome!

[vlado]

You might have more luck using the sub-surface options of the VRayMtl material for this, rather than fastsss2.

Best regards,
Vlado

[sirogi77]

Hello,

Thanks for the suggestion. here's a picture of the previous setup (with fasts SSS tweaked to work) and the VrayMtl with glossy refractions.
Both are "working" for the inter-object scattering.
Could not get the translucency to work for self illuminated stripes on the VrayMtl though. is there a secret handshake?
The parameters seemed pretty self explanatory.




thanks for all the help!

[vlado]

Would something like this work?

Best regards,
Vlado

[sirogi77]

looks great, that will get me going, thanks.

There is another, more complicated component to the question, but I'll follow up when I have more to show, always nicer to chat around a pic.

thanks again!

-c