Fix T54686: objects don't occlude each other for edit-mesh select (part 2)

The previous fix 8a6414ed46f66, resolved selection picking but didn't
work for box/circle/lasso select.

- Add ED_select_buffer_utils.h for general select-buffer operations
  unrelated to edit-mesh.

- Circle select still needs to cache select-id's for each update.

1 files changed, 6 insertions, 0 deletions

diff --git a/source/blender/editors/include/ED_mesh.h b/source/blender/editors/include/ED_mesh.h
index 4e6bf7d4df5..75e0f05d088 100644
--- a/source/blender/editors/include/ED_mesh.h
+++ b/source/blender/editors/include/ED_mesh.h
@@ -152,6 +152,12 @@ struct BMElem *EDBM_select_id_bm_elem_get(struct EDBMSelectID_Context *sel_id_ct
                                           const uint sel_id,
                                           uint *r_base_index);
 
+uint EDBM_select_id_context_offset_for_object_elem(const struct EDBMSelectID_Context *sel_id_ctx,
+                                                   int base_index,
+                                                   char htype);
+
+uint EDBM_select_id_context_elem_len(const struct EDBMSelectID_Context *sel_id_ctx);
+
 void EDBM_select_mirrored(
     struct BMEditMesh *em, const int axis, const bool extend, int *r_totmirr, int *r_totfail);
 void EDBM_automerge(struct Scene *scene, struct Object *ob, bool update, const char hflag);