Lukas Stockner c66a694056 Cycles: Replace Sheen model in the Principled BSDF
This replaces the Sheen model used in the Principled BSDF with the
model from #108869 that is already used in the Sheen BSDF now.

The three notable differences are:
- At full intensity (Sheen = 1.0), the new model is significantly
  stronger than the old one. For existing files, the intensity is
  adjusted to keep the overall look similar.
- The Sheen Tint input is now a color input, instead of the
  previous blend factor between white and the base color.
- There is now a Sheen roughness control, which can be used to
  tweak the look between velvet-like and dust-like.

Pull Request: https://projects.blender.org/blender/blender/pulls/109949
2023-07-27 02:17:44 +02:00
2023-07-11 22:36:10 +02:00
2023-07-25 21:43:53 +10:00

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