Fake Stones problem

[jbest]

Hello everyone, I've made two pictures with rather tall rocks on the lower half of the picture. I seem to get this "cropped" or "added on" part of the picture, where it very much appears the lower half of the rocks have been pieced in. I've got some examples here.

It seems, at the moment, I'd have to crop out that part of the rocks to use the picture at all.
(Sorry, at the moment I can't find the .tgd's.)

Advice would be very much appreciated.

Thanks,
Jahnu

[Kadri]

Maybe some sort of clipping issue . Did you try to place your camera a little higher or to another place, Jahnu ?

[Volker Harun]

These tall displacements are difficult for TG2 to handle ... it may be the camera's position ... or the overall scale ... at least it is more or less unpredictable.

[dandelO]

This is exactly the problem I was talking about recently in my grass shader thread.
RArcher posted this in reply, I'll just quote the message, as it's the very advice you need here;

In the planet node there is a function called "displacement tolerance"  changing it should help with the cut offs at the bucket edges.  Start with very small increments to test as changing the numbers in a big way will result in huge render time increases.

More on topic, the "grass" looks great.  Very useful for almost any scene.

p.s. I like those clouds in image 1 very much!

[jbest]

Thanks for all the suggestions, I'll try them!

@DandelO - there's two layers of clouds in pic 1, an altocumulus and cirrus, with some editing from the default settings.

[Oshyan]

Try increasing Displacement Tolerance in the Planet object node settings. Try a value of 2. This will however increase render times.

- Oshyan