03d5530788
Missed in 0161a19669
Unlike many other brushes, the Layer brush uses the original coordinates
of a given vertex only for the distance test when calculating the factor
and does not use it for other components such as textures.
Note that this commit looks larger than the change would imply, as it
required undoing a recent refactor that is no longer applicable with the
distance changes.
Pull Request: https://projects.blender.org/blender/blender/pulls/128723