Weird, I thought you could just change the vertex color alpha as it has all these alpha specific functions and properties… Turns out we can’t?
But I think what would make the most sense here when talking about faces would be to just move them out of the view.
Don’t be mistaken, I don’t think there is any way to hide vertices or faces from the rasterizer.
You can’t gain performance in bge by trying to hide vertices, as the mesh does get processed as a whole.
They just won’t be visible.