3d textures on lofted surface

You usually wont get much response here on not specific problems without a definition, showing atleast minimal effort. You can see here:
How to ask effective questions Specifically point 7.

That being said you can use image sample to bump meshes and surfaces, you can also use attractors like you find in ripple definitions, just use mesh / surface normals instead of the usual z direction you would use on a flat example.