Quote from: Oshyan on April 01, 2007, 08:56:54 PM
If your DEM's match edges well then all you need to do is make sure "Flatten Surface First" is on in the Displacement tab of all your heightfield shaders, then turn off Border Blending completely. The edges should then match up. Of course given the differences in resolution you may see some seams. This is not a situation that TG2 currently deals with directly so to avid that you'd have to do some merging in an external application, and that might then defeat the purpose of using multiple resolution terrains anyway.
- Oshyan
Oops
I guess that's what they called it flatten first
That works beautifully. To see what's really going on at the borders you have to turn fractal detail off as well because it masks a lot of terrain defects (and makes really low res DEMs look quite good). I'll add fractal detail via a surface layer though, to make it the same across the entire terrain.
Here are some quick renders from the border of my central TER (20km). All TERs are 2049x2049
[attachthumb=#1]
20km and 240km terrains, blending =0
[attachthumb=#2]
Blending = 0.006
[attachthumb=#3]
Blending = 0.006, fractal detail enabled
[attachthumb=#4]
20km and 40km terrains, blending = 0, fractal detail disabled