Digital Human SSS - Scattering from back lighting?

Development Rendering
1

So I’ve been trying for hours to get light to scatter THROUGH the ears of my character like in the Digital Human example from Epic (see attached). I tried using their same material on my character and I get some scattering from the side. But when lit from the back the ears are opaque.

The only way I seem to be able to get light to scatter from behind is to set the Shading Model to “Subsurface” instead of “Subsurface Profile”, which is fine for a candle but doesn’t work for a character.

Any suggestions?

2

Sub surf scattering has been broken (and reported with no answer) since .21

3

You’re probably right. Makes me wonder how they got it to work properly in the demo (which I opened and took screen shots of in 4.26). I tried unscrambling the material but it’s too complex for my pay grade.

Seems like it should just work.