If possible put more effort in finding these files,
They help with reference implementations for subdivision surfaces.
Subdivision surfaces are under utilized in computer games and their widespread usage can add to lower power consumption on the devices, both consoles and mobile devices with GCN AMD architecture.
Tootle is another useful tool. Polycounts tend to increase 3-5 times with the xbox one and ps4 gpu. So it is useful also. Unfortunately it does not have source code, just binaries