Nodes: separate node name and display name in bNodeTreePath

Previously, `node_name` was rarely actually a name of a node. It is set
correctly as node name in `ED_node_tree_push`. However, later on it
was overwritten by the name of an id data block in `node_draw_space`.

Now, the node_name stays the name of the "parent" node. Whereas
display_name is the name that will be displayed in the breadcrumbs.

With this change, the `node_name` can be used to reconstruct the
actual path from the root node tree to the currently visible tree.

Differential Revision: https://developer.blender.org/D10874

1 files changed, 13 insertions, 0 deletions

diff --git a/source/blender/blenloader/intern/versioning_290.c b/source/blender/blenloader/intern/versioning_290.c
index 0c6817542d1..4997639de5e 100644
--- a/source/blender/blenloader/intern/versioning_290.c
+++ b/source/blender/blenloader/intern/versioning_290.c
@@ -1970,5 +1970,18 @@ void blo_do_versions_290(FileData *fd, Library *UNUSED(lib), Main *bmain)
         la->area_spread = DEG2RADF(180.0f);
       }
     }
+
+    LISTBASE_FOREACH (bScreen *, screen, &bmain->screens) {
+      LISTBASE_FOREACH (ScrArea *, area, &screen->areabase) {
+        LISTBASE_FOREACH (SpaceLink *, sl, &area->spacedata) {
+          if (sl->spacetype == SPACE_NODE) {
+            SpaceNode *snode = (SpaceNode *)sl;
+            LISTBASE_FOREACH (bNodeTreePath *, path, &snode->treepath) {
+              STRNCPY(path->display_name, path->node_name);
+            }
+          }
+        }
+      }
+    }
   }
 }