QuoteWhat's transmitted through the network is something called the "Render State", which contains not only the position of the current point in space but also a few other variables.
Thanks, Matt. Good information in that link, and in the individual shader descriptions as well. Slowly, slowly starting to get my head around all this.
QuoteRemember that non-planar (e.g. overhanging) features cannot be represented in a heightfield and so will be lost. After generating you can right-click and Save As, just as with other heightfields.
Piping the procedural network back into a heightfield worked like a charm, Oshyan. The network included some lateral displacements and a strata shader. Both were lost and I assume are among the non-planar features that you mentioned. But still a good option to keep in mind.