How to use Groom Hair Cards UE 4.26?

Does Groom Hair Card generation work in UE 4.26?

I’m trying to create hair for a horse:

I was able to get the Groom Hair Strands working:

But since strands are too computationally heavy to be used in a game, I’m trying to cheap my way out of the long and arduous process of creating hair by using the procedural hair cards generation provided by the groom asset:

The created hair is okay, but I’m unable to understand how to set up the hair material

This is the hair material I have set up so far:

I have a few problems with this:

  • The hair cards don’t have physics. I vaguely remember that the hair cards did have physics but not sure if that’s true.

  • The hair material tint doesn’t work cleanly:

  • When Hair Cards are assigned to an LOD, only LOD0 works. Even if I don’t have any other LOD, I still see the hair getting decimated at a distance, despite the fact that there are no additional LODs in the cards static mesh or in the groom asset:

Is there any tutorial or method to clean this up? Or is this just how far I can go with these experimental methods?

Due to a terrible lack of documentation or community support, I had to take the hard route and break stuff.

Anyways, here’s a cheatsheet for creating Hair Cards from Hair Strands. Also attached a text file that roughly outlines how to create grooms in Blender.

Also attached the hair material that I got from Metahumans.

This entire setup was done in UE 4.26 so it should be scalable to UE 5 too.

Groom_Cards_Hair_Material.zip (2.6 MB)

Making Custom Groom Hair in Blender for CC3 and UE4.txt (7.4 KB)

Needs a bit more elbow grease in fine tuning the material and physics but at least it’s working.