Combine all the highpoly pixel arrays into a single array with a lookup object_id for each of the highpoly objects. Note: This changes the Bake API, external engines should refer to the bake_api.c for the latest API. Many thanks for Sergey Sharybin for the complete review, changes suggestion and feedback. (you rock!) Reviewers: sergey Subscribers: pildanovak, marcclintdion, monio, metalliandy, brecht Maniphest Tasks: T41092 Differential Revision: https://developer.blender.org/D772