Tweak ID->tag reset on file load (no visible change expected!).

Issue was, *some* IDs (like infamous nodetrees from materials etc.)
would not go through the 'main' read_libblock() func, so their tags were
never reset.

So now, we ensure direct_link_id() always clear the tags, and move
setting them in read_libblock() after the call to direct_link_id().

Needed for depsgraph, but general healthier fix actually.

1 files changed, 12 insertions, 5 deletions

diff --git a/source/blender/blenloader/intern/readfile.c b/source/blender/blenloader/intern/readfile.c
index c35e49b801f..2b053b3fb45 100644
--- a/source/blender/blenloader/intern/readfile.c
+++ b/source/blender/blenloader/intern/readfile.c
@@ -2235,6 +2235,10 @@ static void direct_link_id(FileData *fd, ID *id)
 		IDP_DirectLinkGroup_OrFree(&id->properties, (fd->flags & FD_FLAGS_SWITCH_ENDIAN), fd);
 	}
 	id->py_instance = NULL;
+
+	/* That way datablock reading not going through main read_libblock() function are still in a clear tag state.
+	 * (glowering at certain nodetree fake datablock here...). */
+	id->tag = 0;
 }
 
 /* ************ READ CurveMapping *************** */
@@ -8238,7 +8242,6 @@ static BHead *read_libblock(FileData *fd, Main *main, BHead *bhead, const short
 	if (!id)
 		return blo_nextbhead(fd, bhead);
 	
-	id->tag = tag | LIB_TAG_NEED_LINK;
 	id->lib = main->curlib;
 	id->us = ID_FAKE_USERS(id);
 	id->icon_id = 0;
@@ -8247,12 +8250,12 @@ static BHead *read_libblock(FileData *fd, Main *main, BHead *bhead, const short
 	
 	/* this case cannot be direct_linked: it's just the ID part */
 	if (bhead->code == ID_ID) {
+		/* That way, we know which datablock needs do_versions (required currently for linking). */
+		id->tag = tag | LIB_TAG_NEED_LINK | LIB_TAG_NEW;
+
 		return blo_nextbhead(fd, bhead);
 	}
 
-	/* That way, we know which datablock needs do_versions (required currently for linking). */
-	id->tag |= LIB_TAG_NEW;
-
 	/* need a name for the mallocN, just for debugging and sane prints on leaks */
 	allocname = dataname(GS(id->name));
 	
@@ -8261,7 +8264,11 @@ static BHead *read_libblock(FileData *fd, Main *main, BHead *bhead, const short
 	
 	/* init pointers direct data */
 	direct_link_id(fd, id);
-	
+
+	/* That way, we know which datablock needs do_versions (required currently for linking). */
+	/* Note: doing this after driect_link_id(), which resets that field. */
+	id->tag = tag | LIB_TAG_NEED_LINK | LIB_TAG_NEW;
+
 	switch (GS(id->name)) {
 		case ID_WM:
 			direct_link_windowmanager(fd, (wmWindowManager *)id);