[jvanmetre]

I've been working with some materials trying to acheive a level of translucency -- ideally the material is a thin milky polypropylene which when looked through shows objects behind it as diffuse. I can't quite get the sss working correctly...my preview window shows a lot of white dots around my current material and it seems to take forever to clean up. Objects near the material that are reflecting also have the white dots...

Am I missing something?

Thanks

jvm

[Fernando Tella]

Don't trust preview for SSS; it doesn't support it, I think.

SSS scatters light inside the volume, roughness scatters it at surface. As you say it will be a thin object a good alternative for sss would be rising roughness.

[jvanmetre]

Fernando-

Okay...preview isn't the result but it's an indicator of where it's heading...right now with sss enabled in my material it is not cleaning up and for a lack of a better word...overexposed. Way too much "white" in it.

I really need to post an image.

jvm

[jvanmetre]

Here's an image...apologies for the blurryness around the material...

jvm

[Fernando Tella]

Could you show how is that material made?

[jvanmetre]

Fernando-

Thanks for your reply...it was a standard material download -- milky-white-plastic from mxm board.

Anyway...I took your advice re: roughness setting for material, played around, eliminated sss, and came up with something pretty close to translucent polypropylene...will post mxm shortly.

jvm

[Fernando Tella]

Hi Juan,

That coating in your material...

If you want to try the sss way again I would start with this material by Tom: http://mxmgallery.maxwellrender.com/sea ... earch=milk which I think is pretty nicely structured.
You'll probably need something more transparent so you'll need to make transmittance in first layer quite much lighter; also, if you don't want that specularity on surface you should rise roughness on second layer (which handles this part) to something like 20. Only with that may fit your needs, I guess.

Remember that for previewing sss you need to set it to RS1 (right click on preview window).
Also I made some time ago a preview scene for sss and attenuation which may help a bit: http://www.maxwellrender.com/forum/view ... view+scene
Just have to put them in the same folder as the other preview scenes.

[def4d]

there's a "sss without sss" mxm on Mxm Gallery, you should take a look at it
Thanks Fernando for your SSS preview, we missed that!

[jvanmetre]

Def4d-

Thanks for pointing out "sss without sss" will have to look at that.

jvm

[w i l l]

Put a small emitter inside your translacent non-SSS material/object. That can make it look like SSS.