[Bf-blender-cvs] [934b515bc18] master: Fix LibOverride Resync generating orphaned data-blocks.
Bastien Montagne
noreply at git.blender.org
Thu Sep 24 21:17:45 CEST 2020
Commit: 934b515bc18831366dbc53a26558625db5c43716
Author: Bastien Montagne
Date: Thu Sep 24 20:55:24 2020 +0200
Branches: master
https://developer.blender.org/rB934b515bc18831366dbc53a26558625db5c43716
Fix LibOverride Resync generating orphaned data-blocks.
Part of the code handling deletion of old, not needed anymore local
override IDs, was not working properly, effectively only deleting one
ID ever.
New code should also be a bit faster, though this should not be really
visible from user perspective.
Related to T81059, found while investigating it.
===================================================================
M source/blender/blenkernel/intern/lib_override.c
===================================================================
diff --git a/source/blender/blenkernel/intern/lib_override.c b/source/blender/blenkernel/intern/lib_override.c
index ab7e3a64c54..4e25f52cf23 100644
--- a/source/blender/blenkernel/intern/lib_override.c
+++ b/source/blender/blenkernel/intern/lib_override.c
@@ -800,17 +800,31 @@ bool BKE_lib_override_library_resync(Main *bmain, Scene *scene, ViewLayer *view_
}
FOREACH_MAIN_LISTBASE_END;
- /* Delete old override IDs. */
+ /* Delete old override IDs.
+ * Note that we have to use tagged group deletion here, since ID deletion also uses LIB_TAG_DOIT.
+ * This improves performances anyway, so everything is fine. */
FOREACH_MAIN_ID_BEGIN (bmain, id) {
- if (id->tag & LIB_TAG_DOIT && id->newid != NULL && ID_IS_LINKED(id)) {
- ID *id_override_old = BLI_ghash_lookup(linkedref_to_old_override, id);
+ if (id->tag & LIB_TAG_DOIT) {
+ /* Note that this work because linked IDs are always after local ones (including overrides),
+ * so we will only ever tag an old override ID after we have already checked it in this loop,
+ * hence we cannot untag it later. */
+ if (id->newid != NULL && ID_IS_LINKED(id)) {
+ ID *id_override_old = BLI_ghash_lookup(linkedref_to_old_override, id);
- if (id_override_old != NULL) {
- BKE_id_delete(bmain, id_override_old);
+ if (id_override_old != NULL) {
+ id->newid->tag &= ~LIB_TAG_DOIT;
+ id_override_old->tag |= LIB_TAG_DOIT;
+ }
}
+ id->tag &= ~LIB_TAG_DOIT;
}
}
FOREACH_MAIN_ID_END;
+ BKE_id_multi_tagged_delete(bmain);
+
+ /* At this point, id_root has very likely been deleted, we need to update it to its new version.
+ */
+ id_root = id_root_reference->newid;
/* Essentially ensures that potentially new overrides of new objects will be instantiated. */
lib_override_library_create_post_process(bmain, scene, view_layer, id_root_reference, id_root);
@@ -819,7 +833,7 @@ bool BKE_lib_override_library_resync(Main *bmain, Scene *scene, ViewLayer *view_
BLI_ghash_free(linkedref_to_old_override, NULL, NULL);
BKE_main_id_clear_newpoins(bmain);
- BKE_main_id_tag_all(bmain, LIB_TAG_DOIT, false);
+ BKE_main_id_tag_all(bmain, LIB_TAG_DOIT, false); /* That one should not be needed in fact. */
return success;
}
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