A .usdz file can have have arbitrary collection of USD files in it, but in order to currently be compatible with Apple's ARKit 2, we make a single binary USD file that specifically has a ".usdc" extension.
Internally, we have a flag that allows toggling this strict compatibility, which then uses a different code path.
Currently there is no user facing UI to allow this to be toggled.
drwave
commented
6 years ago
A .usdz file can have have arbitrary collection of USD files in it, but in order to currently be compatible with Apple's ARKit 2, we make a single binary USD file that specifically has a ".usdc" extension.
Internally, we have a flag that allows toggling this strict compatibility, which then uses a different code path.
Currently there is no user facing UI to allow this to be toggled.