Commit: 80b906cb3135f9f6547b47150ec752e96df0255e
Author: Bastien Montagne
Date: Mon Mar 14 14:44:11 2016 +0100
Branches: blender-v2.77-release
https://developer.blender.org/rB80b906cb3135f9f6547b47150ec752e96df0255e
Fix T47787: When performing operation 'Make single user' -> 'obj&data', object
could be removed from group.
Similar cause as in T47482, we used to have poor handling of 'user_one' cases
of ID usage,
leading to inconsistent behavior depending on order of operations e.g.
Here, was object used by a group but not linked in any scene - once linked in
scene,
their usercount would be 2, leading to 'making single copy', when it's actually
not needed.
We now have better control here, so let's use it!
Note that other ID 'make single user' code will likely need similar fix
(Images, etc.).
Safe to be backported to 2.77.
===================================================================
M source/blender/editors/object/object_relations.c
M source/blender/makesdna/DNA_ID.h
===================================================================
diff --git a/source/blender/editors/object/object_relations.c
b/source/blender/editors/object/object_relations.c
index 1a3209a..0422ac6 100644
--- a/source/blender/editors/object/object_relations.c
+++ b/source/blender/editors/object/object_relations.c
@@ -1749,7 +1749,7 @@ static void single_object_users(Main *bmain, Scene
*scene, View3D *v3d, const in
ob = base->object;
if ((base->flag & flag) == flag) {
- if (ob->id.lib == NULL && ob->id.us > 1) {
+ if (ob->id.lib == NULL && ID_REFCOUNT_USERS(ob) > 1) {
/* base gets copy of object */
obn = BKE_object_copy(ob);
base->object = obn;
diff --git a/source/blender/makesdna/DNA_ID.h b/source/blender/makesdna/DNA_ID.h
index 0bf3c35..eff6852 100644
--- a/source/blender/makesdna/DNA_ID.h
+++ b/source/blender/makesdna/DNA_ID.h
@@ -260,6 +260,7 @@ typedef struct PreviewImage {
#define ID_FAKE_USERS(id) ((((ID *)id)->flag & LIB_FAKEUSER) ? 1 : 0)
#define ID_REAL_USERS(id) (((ID *)id)->us - ID_FAKE_USERS(id))
+#define ID_REFCOUNT_USERS(id) (((ID *)id)->us - ((((ID *)id)->tag &
LIB_TAG_EXTRAUSER_SET) ? 1 : 0) - ID_FAKE_USERS(id))
#define ID_CHECK_UNDO(id) ((GS((id)->name) != ID_SCR) && (GS((id)->name) !=
ID_WM))
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