In the Blender it is possible to make so (look attach).
In Povray so it is impossible to make.
It is necessary to try to bend mesh before export to Povray.
For the static picture there are no problems. For this purpose there is a
'Noise' button.
In case of animation - a problem.
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Download 'normal_displace.jpg' (168 KB)
Preview of image 'normal_displace.jpg'
![normal_displace.jpg](/povray.binaries.images/attachment/%3Cweb.56ff96e9c8daa117a3e03fe0%40news.povray.org%3E/normal_displace.jpg?preview=1)
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