No, those are a 33x33 terrains, stitched together.
My next steps will be improved tree rendering, (i got some nice "instancing" ideads )
automatic multitexturing, maybe depending on slope and terrain type

Yesterday I've implemented also a new instancing idea for vegetation in my editor. The previous one I used (baking models together) was really fast, but increased nexus too much, because every single terrain tile had it's own, unique baked entity.

good to hear you find out great workarounds really missing from the engine features.

if there is an interest I could add to my editor auto multitexturing based on height and slope data, which are available at the moment so it would be fast. next edition is almost ready I just have to add a new simple free camera mode, and to remove some unused/unnecessary data related to RTS AI.

...what I have ever wanted to check is the scripts of the extra terrain toolset of unity 3, I don't know it is still okay with unity 4. it contained some random terrain heightmap generation and nice simulation of different kind of erosions afterwards.

hi,

you mean something like snow at a certain height and rock on a vertical plane ?

yes, it is not difficult to auto generate. just set up a few height dependent textures with min-max intervals: underwater, seashore, grass, high mountain grass, and a slope dependent cliff texture that overrides the previous ones.
or assign to the brush height or slope limit parameters, and pixels are modified only if values are within boundaries.

Improved my terrain generation algorithm:


Added a custom terrain shader for multitexturing based on slope and vertex data:


Another two images:
Image 02
Image 03

The shader based on slope data looks really nice. The terrain generation looks not really realistic. Looks like Perlin Noise? Maybe you could try an Erosion Algorithm?

Yeah, it's just perlin noise right now. I have to look into more advanced techniques like erosion and so on.
But i think i got the texturing pretty good. It doesn't look like it repeats every two meters, but in fact, the texture does

Inspired by the idea of an erosion terrain generator, I'm working on a Voronoi heightmap generation script. Works very good so far. Needs some small improvements, then I post it in Lite-C Contribution forum.

EDIT: this paper explains erosion terrain generation very well: http://oddlabs.com/download/terrain_generation.pdf

EDIT2: made a contribution of this: http://www.opserver.de/ubb7/ubbthreads.php?ubb=showflat&Number=433972#Post433972

Some actual game project: