Hi, I'm trying to achieve the following result: an island, with flat surface on the top, and displacement along the walls .. As you can see in the image, flat surface is ok, i drew a displacement map for the island to pop up, and I'm using lateral displacement to get a non-smooth wall... (sorry I'm not english).
But it's like if this displacement only 'faces' one direction.. leaving the other walls of the island quite smooth. Can you help me with that? I'd like to improve myself and understand this...
many thanks
(http://data:image/png;base64,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)
What you can also do is warp the image map (warp shader, with vector displacement as function input, with PF as input). Play with values. That'll make the sides displace a bit sideways. Or raise the terrain first by image map, then add a compute terrain or compute normal with low patch size (depends on how large island is. Then a PF displacing only laterally.
Does the island need to be exactly like this or is any shape okay? Then you can also use a warped simple shape.
Many thanks, I'll try both ways.. in this case I did need this shape, but warping a ssshader could be great, thank you :)
Another thing you can do is make a mask of the sides of the island by subtracting the center from the whole, and use that to mask some very big fake stones as child of a surface shader (before or after a compute terrain, see what looks good), so you get some sort of rocky outcrops.
Center would be the image map taking through a color adjust, where you increase the black point, the whole island would the image map taken through a color adjust with white point decreased. Pull the fake stones through a transform shader set to world (final position).