What I can say, part of face model is "tranparent", It's only happen when I use ray-cast, a few models based on TDA Len (I think they base on TDA Len) have this same problem, anybody knows how fix that?
is the background/stage assigned to raycast? Otherwise it can bleed through.
Yes it is, I found half-measure sollution of this problem, this model have this problem when shadows is turn off, when is turn on the problem isn't so visible.
I've found Ray to be both a blessing and a curse. Some models are more sensitive to the draw order than others. It sometimes feels like it takes forever to figure out what happened and why things look so bad.
Some things to try:
Model draw order, make sure the background is above the model. I like to put my model at the very end, except for any accessories they may be holding on to. (Background -> Model draw order)
Accessory draw order, make sure that ray is after the background, models and most other effects. Ray comes before things like raindrops or puddles and stuff like that unless you need ray to apply to them too (maybe something like glitter). (Background -> Accessory edit)
Make sure that you have selected the proper material in the effect mapping, material map tab. Some models have a separate material for the mouth area. For the best look it is essential to do a right click, subset extract and select the proper material for each part of a model.
If all else fails, open the model in pmx editor and check for any oddities in the transparency or reflective properties of the particular material assigned to that spot.
I'm sure you probably already knew some or all of this, but those are the only things that I have found that seem to cause transparency issues with model's parts. Rarely, some models just do not play nice at all with Ray. Others can look "odd" but still look okay enough for rendering.
Thanks for answer, I'll try.