Hello, I was creating a game-ready asset, while working on the textures with substance painter, I exported the textures to Unreal Engine for a quick look-dev and see how it looked in the render engine.
My material consist of multiple channels such as Base color, Metallic, Roughness, Emissive, Opacity, Normal and Ambient Occlusion.
As I have an opacity channel for the glass bottles, I changed the blend mode to “Transluscent” and the transluscency lighting mode to “Surface TransluscencyVolume”, to keep my roughness/metallic/ect channels. (is that the right way to do it? 
)
But I saw that when changing the blend mode to Transluscent, it affected my roughness a lot :
“Opaque”
“Transluscent”
“Transluscent”
“Opaque”
Also there seem to be a semi-transparency applying everywhere on my mesh :
“Transluscent”
“Opaque”
Here is my shader setup :
I saw this answer to what seem to be the same issue :
I haven’t tried it yet, but it will just end up as a nightmare if I had to separate each part that has transluscency to it, especially for placing these elements in the scene.
So is there anything that would solve this problem ?
Bonus issue : I haven’t looked in it too much yet, but after exporting my textures, I saw that there was some elements with missing textures, the whole thing is a merged mesh, I’ve checked the uvs and everything seems correct, they do have texture in the substance file, and I’m also using udims, so if you have a solution to this as well…
