Configurable Stencil

[william-silversmith]

It would be easy to add a toggle for the 26 elements of the stencil at the slight expense of performance.

It would be interesting to consider some other common operations like large stencils (4x4x4? 5x5x5?). It would be helpful to know what people generally do with it.

[william-silversmith]

I think it would be pretty easy to extend the stencil to arbitrary WxHxD with the same high efficiency strategy. Something pretty efficient can be done for symmetric stencils too.