Is Simon Tatham’s site still online? It would not respond when I clicked the link.
The day Paul Bourke’s site goes offline is the day the internet dies. Only slightly kidding: I read it as a teenager and yet it’s still there providing solid code and answers. https://paulbourke.net/miscellaneous/interpolation/ is still there as I read it in 2001.
Once I have implemented such tiling using shadertoy. Source code: https://github.com/Panzerschrek/shader_bits/blob/master/penr.... No recursion is really needed (which isn't supported in shaders), but a plain loop with N iterations to achieve tiling of depth N.
The day Paul Bourke’s site goes offline is the day the internet dies. Only slightly kidding: I read it as a teenager and yet it’s still there providing solid code and answers. https://paulbourke.net/miscellaneous/interpolation/ is still there as I read it in 2001.
I have, a bit too late, realized there are more tilings than I thought.