OpenXR input

The action-set/action-based input subsystem of OpenXR. More...

Collaboration diagram for OpenXR input:

Modules
	OpenXR input transformation

Files
file	oxr_subaction.h
	Provides a utility macro for dealing with subaction paths.

Data Structures
struct	oxr_dpad_settings
	dpad settings we need extracted from XrInteractionProfileDpadBindingEXT More...
struct	oxr_dpad_entry
	A entry in the dpad state for one action set. More...
struct	oxr_dpad_state
	Holds dpad binding state for a single interaction profile. More...
struct	oxr_subaction_paths
	A parsed equivalent of a list of sub-action paths. More...
struct	oxr_action_set_attachment
	The data associated with the attachment of an Action Set (oxr_action_set) to as Session (oxr_session). More...
struct	oxr_action_state
	The state of a action input. More...
struct	oxr_action_input
	A input action pair of a xrt_input and a xrt_device, along with the required transform. More...
struct	oxr_action_output
	A output action pair of a xrt_output_name and a xrt_device. More...
struct	oxr_action_cache
	The set of inputs/outputs for a single sub-action path for an action. More...
struct	oxr_action_attachment
	Data associated with an Action that has been attached to a Session. More...
struct	oxr_action_set_ref
	The reference-counted data of an action set. More...
struct	oxr_action_set
	A group of actions. More...
struct	oxr_action_ref
	The reference-counted data of an action. More...
struct	oxr_action
	A single action. More...

Detailed Description

The action-set/action-based input subsystem of OpenXR.

Action sets are created as children of the Instance, but are primarily used with one or more Sessions. They may be used with multiple sessions at a time, so we can't just put the per-session information directly in the action set or action. Instead, we have the _attachmentstructures, which mirror the action sets and actions but are rooted under the Session:

• For every action set attached to a session, that session owns a oxr_action_set_attachment.
• For each action in those attached action sets, the action set attachment owns an oxr_action_attachment.

We go from the public handle to the _attachment structure by using a key value and a hash map: specifically, we look up the oxr_action_set::act_set_key and oxr_action::act_key in the session.