Guards, doors and props moved at the 60 Hz tick inside a 90 Hz picture. Each object's joint
matrices are now blended, keyed by (Model*, joint) from a game-thread snapshot and rebased onto
the new camera; a chr blends together with its held weapons and hat; room-origin changes, failed
gates and split-screen stay exact. The CPU-projected sky is re-projected to the in-between camera.
Destroyed objects (world-space matrices) stay exact. Port layer only; porting-notes D46.
James Dansereau
a77bd4e03d