Cleanup: differentiate region/screen relative coordinates

- Avoid ambiguity which caused these values to be confused, use `mval`
  for region relative mouse coordinates, otherwise `event_xy`.

- Pass region relative coordinates to sample_detail_dyntopo &
  sample_detail_voxel as there is no reason to use screen-space values.

- Rename invalid use of mval for screen-space coordinates.

1 files changed, 1 insertions, 1 deletions

diff --git a/source/blender/editors/include/ED_sculpt.h b/source/blender/editors/include/ED_sculpt.h
index 54d67c50d5c..550040d2bc6 100644
--- a/source/blender/editors/include/ED_sculpt.h
+++ b/source/blender/editors/include/ED_sculpt.h
@@ -51,7 +51,7 @@ void ED_sculpt_face_sets_initialize_none_to_id(struct Mesh *mesh, int new_id);
 
 int ED_sculpt_face_sets_active_update_and_get(struct bContext *C,
                                               struct Object *ob,
-                                              const float mval[2]);
+                                              const float mval_fl[2]);
 
 /* Undo for changes happening on a base mesh for multires sculpting.
  * if there is no multi-res sculpt active regular undo is used. */