Backward compatibility fix for SOCK_DYNAMICS flag on group sockets.

This is currently only needed for displaying the up/down buttons of group sockets. All regular group sockets should have this flag to indicate they are added by the user. More complex "group-type" trees may use non-dynamic sockets in the future for sockets that are not supposed to be manipulated.

1 files changed, 19 insertions, 0 deletions

diff --git a/source/blender/blenloader/intern/readfile.c b/source/blender/blenloader/intern/readfile.c
index 355fc14705a..66e38f1c5f8 100644
--- a/source/blender/blenloader/intern/readfile.c
+++ b/source/blender/blenloader/intern/readfile.c
@@ -7015,6 +7015,15 @@ static void do_versions_nodetree_default_value(bNodeTree *ntree)
 		do_versions_socket_default_value(sock);
 }
 
+static void do_versions_nodetree_dynamic_sockets(bNodeTree *ntree)
+{
+	bNodeSocket *sock;
+	for (sock=ntree->inputs.first; sock; sock=sock->next)
+		sock->flag |= SOCK_DYNAMIC;
+	for (sock=ntree->outputs.first; sock; sock=sock->next)
+		sock->flag |= SOCK_DYNAMIC;
+}
+
 static void do_versions(FileData *fd, Library *lib, Main *main)
 {
 	/* WATCH IT!!!: pointers from libdata have not been converted */
@@ -11972,6 +11981,16 @@ static void do_versions(FileData *fd, Library *lib, Main *main)
 				tex->nodetree->update |= NTREE_UPDATE;
 			}
 		}
+
+		/* add SOCK_DYNAMIC flag to existing group sockets */
+		{
+			bNodeTree *ntree;
+			/* only need to do this for trees in main, local trees are not used as groups */
+			for (ntree=main->nodetree.first; ntree; ntree=ntree->id.next) {
+				do_versions_nodetree_dynamic_sockets(ntree);
+				ntree->update |= NTREE_UPDATE;
+			}
+		}
 	}
 
 	/* put compatibility code here until next subversion bump */