Details on hair cards deformation shader code

Hi,

I think your understanding is correct, but the system being non-trivial, make it difficult to see all the cases. I suspect that what you see is due to RBF (radial basis function) being enabled on that groom (?). RBF helps to retain groom global shape under heavy skin deformation. This is an opt-in feature, that is enabled on certain groom.

The sim. guide logic will be invoked either if simulation is enabled or if RBF is enabled. I tried to summarise the 3 main cases with the RenderDoc capture screenshots.

[Image Removed]

I hope this helps. Let me know if you still have some questions.

/Charles.