I was only “the user” of the system but I didn’t develop it so I don’t know any of the implementation details.
some details that might be useful:
- the skeleton’s bones were mapped to a “vertex-bone table texture” (HDR, texture size X = number of mesh vertices, Y = 2px but I have no idea how the mapping was done)
- the animations were 3 textures per anim (HDR, texture X = number of bones, texture size Y = number of animation frames, each texture corresponding to X, Y and Z matrices respectively)
- the material would evaluate the passed anim texture against the vertex-bone table texture with a custom function (no idea how it did what it did) and plugged into WPO