just want to say thX for everyone for sharing their wisdom with this new Technical Terragen
just a quickie then
can we apply a bump map over a photo overlay??
TG2 doesn't currently support bump maps, but you can use displacement with any bump map for essentially the same effect (with the added bonus that there is real dimension to the bumps, unlike bump mapping). Generally speaking bump maps are designed with small "bump" values in mind so you'll want to use very small displacement values as well. The Default Shader supports loading a base image map as well as a separate displacement input, for example.
- Oshyan