Hi all,
the spirit of the rule to allow postwork, but not adding stuff, is to have all elements of your image be rendered. A cloud image you can barely call rendered. That's adding stuff.
"Fixing" problematic areas, in the sense that there were minor render errors, such as small holes in a rock wall, is absolutely ok. "Fixing" one out of 100 fake stones that happens to have "exploded" it totally ok.
It's probably impossible to list all things that are allowed and what is not allowed... Try to understand the true meaning, the spirit of what "not adding stuff" means.
Using an image map as a color function for small parts of your image is not a problem. It's common practice to enrich rock structures with image maps, but don't let the image map become the dominating part of something, unless its an object, that almost by default must be colored through images, and not procedurally.
Let what Terragen does be the dominant part of your render, not an image map. Just be cautious with these things and you'll be ok. If in doubt, show the render and ask. Really, show it and ask.
Brush fixing GI boundary problems for crop renders is not problematic either. Given enough RAM and stable Terragen, you *could* have rendered it in one shot. If you glue cropped parts together, that's not adding any scene elements. I have no issue with that at all. The idea is showing what great and realistic looking things you can do with Terragen.
Regards,
Frank
