Skin tend to be transparent as the rendering progresses

OMGOMG

Hi everybody,

I've tried to make a render for Halloween, but I encountered a technical problem I don't know how to solve : the skin of the cute little monster tend to be transparent as the rendering progresses... When it's completely converged, the skin consists of the gray squares that represents transparency.

The Gray Squares in Edit mode :

The render after just a few samples :

The render after many samples :

It seems to be due to the skin itself because I've another character not impacted by this bug on the scene (the images above are a crop of the original render). But I still tried another HDRI for the case of an incompatibility with this skin. I've searched over the forum for this bug : in my case, it seems that it's not due to motion blur because this option is turned off. 

Thank you so much for your help !!

 

Richard Haseltine

This is, I think, a known Iray issue, fixed in the version in DS 4.11 Public beta. If you don't want to use the beta you can work around it for now by seelcting the skin surfaces in the Editor tab of the Surfaces pane and setting the SSS type to Mono instead of Chromatic or, in the render Settings pane, turning Draw Dome on.

OMGOMG

Thank you very much Richard !!

I've only turned Draw Dome "on", and it solved the problem.

I take this opportunity to thank you for all your contributions on this forum... :]

Richard Haseltine

heh, I'm glad to help.