Sebastian Parborg
9a7f5f1bb4
The issue was that the deps graph relation builder assumed that all bones that had a IK constraint on them would be evaluated. However for targetless IK bones, only the active bone would receive updates and the others would be skipped (as those would be treated as if the IK constraint was disabled). I didn't see an easy way to solve this from the depsgraph side of things. Instead I came up with a solution that I feel is quite strait forward and reflects what is actually supposed to happen under the hood. Now all targetless IK constraints are treated as disabled and will not be added to any relations in the depsgraph. Instead, a temporary IK constraint will be created when the bone in question is transformed. This is basically activating "Auto IK" for the bone while transforming. Reviewed By: Sergey, Brecht Differential Revision: http://developer.blender.org/D7378