# A hand-written node — see `clarity.yaml`, whose implementation this shares.
id: texture
order: 130

attributes: [detail]
rust: Texture

why_rust: |
  The same neighbourhood operation as clarity, at a tenth of the scale: one
  implementation in `src/ops/local_contrast.rs`, parameterised by the band it
  acts on. Two nodes rather than one node with two sliders because the radius
  is the *definition* of each control rather than a setting of it, and because
  a texture at zero must then cost nothing at all — which `is_active()` gives
  for free and a merged node would have had to hand-write.

placement: |
  Immediately after clarity, and for the same reasons: after noise reduction,
  which must not be handed amplified grain, and before capture sharpening,
  which belongs last.

  After clarity specifically, so that the fine base is computed on the
  modelling the coarse control has already settled rather than the other way
  round.