Re: Arbitrary derivatives

Henri <henri...@...>

On 19 jan, 09:52, Bo Schwarzstein <> wrote:
Hello folks,

In specification, it sais "Arbitrary derivatives without grids or
extra shading points.", but I really confused how it works without
explicit grid. Does it like the GPU, compute the derivatives on screen
space ?
No, it does automatic differentiation.

The overall idea is that if your inputs know their derivatives ( for
instance, when raytracing a primitive, computing P, dP/dx and dP/dy is
easy )
and your shading library know how to differentiate all its operators,
you are able to maintain derivatives quantities while shading.

Look at for a complete

Hopes this helps



Join { to automatically receive all group messages.