Overhangs in different directions

Started by Blackheart6004, July 15, 2010, 02:53:52 PM

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Blackheart6004

I've been trying to do this type of change to my overhangs. I've been adding the Redirect shader and Twist and Shear shader to 2 separate terrain for overhangs to go in 2 different directions but don't see any progress on it :(

Everytime I do it, even with 2 twist and shear shaders with different lean direction, my terrain goes into one direction with the two.

So does anyone knows how to do this like in the example render? http://www.planetside.co.uk/gallery/f/tg2/begann_dasloch.jpg.html
Notice that there are 2 overhangs in different directions.

Thanks in advance.
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Hetzen

Have you tried using a 'merge' shader on two seperate directed terrain chains?

Blackheart6004

I haven't used that shader before but I'll try. Thanks for the help :)
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Hetzen

No problem. There is a check box within the shader 'choose by altitude', where I'd advise you check 'highest (raise)'. This will make sure your peaks poke through.

Blackheart6004

What about the "Mix Controller" box?
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Hetzen

The Mix controller box, is where you apply another shader. White = 1, black =0. If nothing is connected, then it uses the 'Mix to A' value, which defaults to 0.5, ie equal mix of both inputs.

Blackheart6004

Ah ok.

One more question - How exactly do i set up the merge shader with the overhangs?
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Hetzen

There's loads of ways to skin a cat, but in this case, make a terrain with overhangs in one direction. Then duplicate those nodes, then apply another direction in your twist and shere, and maybe hit random seed a few times on the duplicated PF.. Plug those two strings of nodes into the merge shader.....

Hetzen

Have a play. You'll get to understand what's going on better.

Blackheart6004

Big thanks for the help, Hetzen! The merge shader is truly a wonder for this effect. :)

The results are in the attachment, rendered without the sky. Now to add some displacements  ;D

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Njen