"gadoid" <hansen at tkgate.org> wrote:
> Is there a way to get a composite normal that is the sum of two normals, for
> example a fine scaled granite on a crackle?

Yes.  I'm sure you may have already found that you can't simply layer them.

You can try using "average" pattern:

  normal{
    average
    normal_map{
      [1 crackle 1]
      [1 granite 1]
    }

  }

You can change what you use in the normal_map and even have as many items as
you like (up to POV's limit of 256).

Adjusting the numbers before the pattern name adjusts its weighting.  Have a
look at the average pattern in the docs for more info.

-tgq

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