Fix T56673: Tara.blend from Blender cloud crashes on load

The issue was caused by dependency cycle solver killing relation
which was guaranteed various things: i.e. copy-on-write component
orders and pose evaluation order (which must first run pose init
function).

Now it is possible to prevent such relations from being ignored.

This is not a complete fix, but is enough to make this specific
rig to work. Ideally, we also need to run copy-on-write operation
prior to anything else.

1 files changed, 2 insertions, 0 deletions

diff --git a/source/blender/depsgraph/intern/depsgraph.h b/source/blender/depsgraph/intern/depsgraph.h
index bbf1f883bde..5097ae33d4c 100644
--- a/source/blender/depsgraph/intern/depsgraph.h
+++ b/source/blender/depsgraph/intern/depsgraph.h
@@ -79,6 +79,8 @@ typedef enum eDepsRelation_Flag {
 	/* Only flush along the relation is update comes from a node which was
 	 * affected by user input. */
 	DEPSREL_FLAG_FLUSH_USER_EDIT_ONLY = (1 << 2),
+	/* The relation can not be killed by the cyclic dependencies solver. */
+	DEPSREL_FLAG_GODMODE              = (1 << 3),
 } eDepsRelation_Flag;
 
 /* B depends on A (A -> B) */