Vertex Alpha not correct when importing max files

Questions & Answers
1

Hi,

Got a problem with the alpha component of the vertex colors when importing our 3ds max models. When we drag 3ds max models into unity they seem to import fine except the alpha channel of the vertex color for all the vertices seem to have been set to 1.0.

Weve ran tests and the RGB values of the vertex color seem to come through fine, we use the vertex alha quite extensivley in our shaders so this is something we need to fix ASAP.

Has anyone else had this problem or know what might be causing it?

Thanks, Tony.

2

I hope you managed to fix this as it was 7 years ago! Just incase someone googles it like I just did the solution I found is that the mesh also needs vertex colours as well as alpha so before exporting to from max to unity, my layer stack looks like this:

Skin (its a rigged character)
vertex paint (set to vertex alpha)
vertex paint (set to vertex color)
editable poly (the mesh)

im in unity 5.4