Masking allows to localize cracks inside main tiles but also to control their area size.
Here first pictures done with a cracks preset I am currently working.
Still a lot of work to have something usable and configurable enough to be able to render several types of cracks, but a good start !
Terragen 3.2 is here
This new release contains some very interesting new features like Glass shader, stereo camera or fisheye lens.
There are also a lot of fixes and performance improvements.
For detailed announcement please visit official Terragen 3 website.