Geometry Nodes: show used named attributes in nodes

This adds a new node editor overlay that helps users to see where
named attributes are used. This is important, because named
attributes can have name collisions between independent node
groups which can lead to hard to find issues.

Differential Revision: https://developer.blender.org/D14618

1 files changed, 12 insertions, 0 deletions

diff --git a/source/blender/blenloader/intern/versioning_300.c b/source/blender/blenloader/intern/versioning_300.c
index 95851c0e9ff..ec60183218c 100644
--- a/source/blender/blenloader/intern/versioning_300.c
+++ b/source/blender/blenloader/intern/versioning_300.c
@@ -2677,5 +2677,17 @@ void blo_do_versions_300(FileData *fd, Library *UNUSED(lib), Main *bmain)
    */
   {
     /* Keep this block, even when empty. */
+
+    /* Enable named attributes overlay in node editor. */
+    LISTBASE_FOREACH (bScreen *, screen, &bmain->screens) {
+      LISTBASE_FOREACH (ScrArea *, area, &screen->areabase) {
+        LISTBASE_FOREACH (SpaceLink *, space, &area->spacedata) {
+          if (space->spacetype == SPACE_NODE) {
+            SpaceNode *snode = (SpaceNode *)space;
+            snode->overlay.flag |= SN_OVERLAY_SHOW_NAMED_ATTRIBUTES;
+          }
+        }
+      }
+    }
   }
 }