How many wrapper passes enclose this one.
The position in execution order.
A key stable across frames for passes that are recreated each frame.
The wrapper pass this one belongs to, if any.
The pass.
The target the pass renders to, with the backbuffer resolved to the device's backbuffer object; undefined for passes that render nothing.
The XR views the pass is replicated for, or 0 outside multi-view.
The number of passes this one wraps directly.