World detour

 I did some additional planet content -- testing a move from 16k to 21k resolution. It's a lot of painting, and the previous strategy of smudging Earth terrain textures together doesn't work as well as you get a visual sludge at the regular viewing distance, even if things look sharper and better when you get close-in.

Calantica with 16k textures and the procedural planet material node tree

An aside to the detour: Aurore, from 2300AD

Base colour map. Meh!

Close-up, you realise how big a 21k map actually is! The coastline is too strong. For the next iteration, I will look into whether it's possible to add noise that suggests undersea terrain.

Test renders. That material is far from finished, but it looks okay as a starting point.