Quote from: surrealdan on March 11, 2019, 10:45:55 AM
Hey, I just purchased the plugin recently and its great! Just had some questions when dealing with multiple or large scale terrains. Is it better or do I apply the erosion to all the heightfields in the scene? or do I create an erosion node for each heightfield and erode individually? And how do I deal with flow maps for masking? Hope there is a User Guide coming soon. Thanks!
Hello,
I am working on user manual, but really slowly, sorry.
About using of erosion shader on multiple heightfields. It depends on multiple things. If your whole terrain consist of multiple heightfields, which are placed in a grid with no gaps inbetween, then certainly one global erosion shader would be enough.
And if you use several heightfields which are placed non-uniformly and have different spatial resolution (I mean size of a single heightfield cell, not actual heightfield resolution), for example, you have heighfield for your main scene where camera is located and one huge heightfield for background, then probably it is better to use two erosion nodes: one for each heightfield, and set erosion shader's sizes and resolutions accordingly to your heightfields (the same or higher, as erosion can add finer details, especially if some fractal details applied before erosion).
On the other hands, you can have several heightfields located relatively near to each other with some gaps inbetween, and want to fill these gaps - one single erosion shader would be better, as it can fill the gaps with deposition, and make heightfield edges looking more natural. Even better: you can add some fractal terrain filling these gaps, and erosion will make natural transitions between heightfields and procedural fractal details.
Just remember that single global erosion method (with high resolution) can require much more RAM and CPU than multiple lesser eroded areas having lesser resolution. But may be it is also easier for use.
Daniil