I’ve been trying to set up my character in UE4. I have a separate material ID and UV maps for my Hair, but when I set the hair to masked and plugin the opacity mask, it completely disappears. I acquired my character via Fuse CC if that’s helpful. Additionally, the eyelashes are also not rendering correctly with opacity mask.
could be clip mask value
alpha channel is often used for opacity
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I couldn’t find a ‘clip’ value that I liked for the eyelashes, (looked like black caterpillars crawling across their eyeballs) so I decided to use the “Translucent” material type. But of course, this creates terrible results for the character’s skin, which I believe have to do with translucency changing the polygon rendering order. Even though the skin part of the texture map from fuse has no alpha in the transparency, it seems to really mess up the rendering order when you set the entire body to use a translucent material, so I wouldn’t do that.
So in Maya, I assigned a separate “Lashes” material to the eyelashes. After importing to Unreal, I used the same bitmap that Fuse gave me for the body, but after selecting the material node, I set the Material / Blend Mode to Translucent. Of course, plug in your alpha channel to the Opacity input of your material node, and the eyelashes should look a whole lot better.