Point is I don't see much reason NOT to have a single, highly artists friendly BDRF as opposed to multiple kinds.

In theory, it is a great idea... but, perhaps you're over-estimating next-gen power. Disney can spend an hour per frame, using 100 GPUs, we need 33ms per frame on 1 GPU.

 

For realtime, you're not going to want to compute sub-surface-scattering, or anisotropic reflections, for every surface if you can avoid it, etc, etc...

oint is I don't see much reason NOT to have a single, highly artists friendly BDRF as opposed to multiple kinds.

In theory, it is a great idea... but, perhaps you're over-estimating next-gen power.Disney can spend an hour per frame, using 100 GPUs, we need 33ms per frame on 1 GPU.

For realtime, you're not going to want to compute sub-surface-scattering, or anisotropic reflections, for every surface if you can avoid it, etc, etc...