Inspiration

VR

2019 AYAHUASCA
2019 Afterlife: Combining Branching Narratives With Live Actors In VR
2017 Alice - The Virtual Reality Play

Overview UnityTeam Digital Human Rigging & Shading

A general overview of some of the tools and workflows used and applied by the Unity Team for the creation of their state of the art Digital Human, Gawain.

Maya File

Rig

They used two different rig hierarchies. One for the body the other for the head.

Body Rig

Classical full body game rig. Skin weights up to the torso. Corrective blendshapes for the hands and the back.

Head Rig

Combination of Joint hierarchy and over 200 Blendshapes.

Model

Non-deforming body parts like the gum don't have an optimized topology.

All the hair consists of cards. Hair is exported as a separated object and is not part of the head mesh. It's attachment to the deforming mesh happens in Unity.

Unity Files

Attachment Tools

The Unity Team developed a set of very useful tools to attach elements to a deforming mesh in realtime. You can implement those tools in your own project by getting them here.

First an empty dataset is created in the Assets Window. (right click → Digital Human → skin attachment data )

Then in the outliner you select the object you want to have attached to the deforming mesh. Add a 'Skin Attachment Target'-Script to it's Inspector and specify the dataset you just added.

Select the mesh driving the deformation, add a 'Skin Attachment'-Script to its inspector and specify the targets. (This only works if you insert the script after the 'Skinned Mesh Renderer'/'Mesh Renderer' )

Go back to the inspector of the target and fill in the dataset with the required mesh information.

As for now these tools only work with meshes being deformed by the GPU.