Merge branch 'master' into temp-sculpt-roll-mappingtemp-sculpt-roll-mapping

1 files changed, 7 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_mesh_mapping.h b/source/blender/blenkernel/BKE_mesh_mapping.h
index 9d9c2f57f89..705158bec0b 100644
--- a/source/blender/blenkernel/BKE_mesh_mapping.h
+++ b/source/blender/blenkernel/BKE_mesh_mapping.h
@@ -63,6 +63,10 @@ typedef struct UvElement {
  * If islands are calculated, it also stores UvElements
  * belonging to the same uv island in sequence and
  * the number of uvs per island.
+ *
+ * \note in C++, #head_table and #unique_index_table would
+ * be `mutable`, as they are created on demand, and never
+ * changed after creation.
  */
 typedef struct UvElementMap {
   /** UvElement Storage. */
@@ -78,6 +82,9 @@ typedef struct UvElementMap {
   /** If Non-NULL, pointer to local head of each unique UV. */
   struct UvElement **head_table;
 
+  /** If Non-NULL, pointer to index of each unique UV. */
+  int *unique_index_table;
+
   /** Number of islands, or zero if not calculated. */
   int total_islands;
   /** Array of starting index in #storage where each island begins. */