System property for face tracking.

Description

An application can inspect whether the system is capable of receiving face tracking input by extending the XrSystemProperties with XrSystemFaceTrackingPropertiesFB structure when calling GetSystemProperties.

If a runtime returns FALSE for supportsFaceTracking, the runtime must return ERROR_FEATURE_UNSUPPORTED from CreateFaceTrackerFB.

Valid Usage (Implicit)

The XR_FB_face_tracking extension must be enabled prior to using XrSystemFaceTrackingPropertiesFB
type must be TYPE_SYSTEM_FACE_TRACKING_PROPERTIES_FB
next must be NULL or a valid pointer to the next structure in a structure chain

Layout


struct XrSystemFaceTrackingPropertiesFB {
    XrStructureType type;
    void * next;
    XrBool32 supportsFaceTracking;
}

Nested and Inner Type Summary

Modifier and Type	Class and Description
public static class	XrSystemFaceTrackingPropertiesFB.Buffer An array of `XrSystemFaceTrackingPropertiesFB` structs.

Field Summary

Modifier and Type	Field and Description
public static final int	ALIGNOF The struct alignment in bytes.
public static final int	NEXT The struct member offsets.
public static final int	SIZEOF The struct size in bytes.
public static final int	SUPPORTSFACETRACKING The struct member offsets.
public static final int	TYPE The struct member offsets.

Inherited from org.lwjgl.system.Struct:: container DEFAULT_ALIGN_AS DEFAULT_PACK_ALIGNMENT

Constructor Summary

Access	Constructor and Description
protected	XrSystemFaceTrackingPropertiesFB(long address, ByteBuffer container)
public	XrSystemFaceTrackingPropertiesFB(ByteBuffer container) Creates a `XrSystemFaceTrackingPropertiesFB` instance at the current position of the specified `ByteBuffer` container.

Method Summary

Modifier and Type	Method and Description
public static XrSystemFaceTrackingPropertiesFB	calloc() Returns a new `XrSystemFaceTrackingPropertiesFB` instance allocated with `memCalloc`.
public static XrSystemFaceTrackingPropertiesFB.Buffer	calloc(int the buffer capacity capacity) Returns a new `XrSystemFaceTrackingPropertiesFB.Buffer` instance allocated with `memCalloc`.
public static XrSystemFaceTrackingPropertiesFB	calloc(MemoryStack the stack from which to allocate stack) Returns a new `XrSystemFaceTrackingPropertiesFB` instance allocated on the specified `MemoryStack` and initializes all its bits to zero.
public static XrSystemFaceTrackingPropertiesFB.Buffer	calloc(int the buffer capacity capacity, MemoryStack the stack from which to allocate stack) Returns a new `XrSystemFaceTrackingPropertiesFB.Buffer` instance allocated on the specified `MemoryStack` and initializes all its bits to zero.
protected XrSystemFaceTrackingPropertiesFB	create(long the struct memory address address, ByteBuffer an optional container buffer, to be referenced strongly by the struct instance. container) Implements abstract org.lwjgl.system.Struct.create. Similar to `the constructor`, but returns the exact type of the `Struct` subclass.
public static XrSystemFaceTrackingPropertiesFB	create() Returns a new `XrSystemFaceTrackingPropertiesFB` instance allocated with `BufferUtils`.
public static XrSystemFaceTrackingPropertiesFB	create(long address) Returns a new `XrSystemFaceTrackingPropertiesFB` instance for the specified memory address.
public static XrSystemFaceTrackingPropertiesFB.Buffer	create(int the buffer capacity capacity) Returns a new `XrSystemFaceTrackingPropertiesFB.Buffer` instance allocated with `BufferUtils`.
public static XrSystemFaceTrackingPropertiesFB.Buffer	create(long the memory address address, int the buffer capacity capacity) Create a `XrSystemFaceTrackingPropertiesFB.Buffer` instance at the specified memory.
public static XrSystemFaceTrackingPropertiesFB	createSafe(long address) Like `create`, but returns `null` if `address` is `NULL`.
public static XrSystemFaceTrackingPropertiesFB.Buffer	createSafe(long address, int capacity) Like `create`, but returns `null` if `address` is `NULL`.
public static XrSystemFaceTrackingPropertiesFB	malloc() Returns a new `XrSystemFaceTrackingPropertiesFB` instance allocated with `memAlloc`.
public static XrSystemFaceTrackingPropertiesFB.Buffer	malloc(int the buffer capacity capacity) Returns a new `XrSystemFaceTrackingPropertiesFB.Buffer` instance allocated with `memAlloc`.
public static XrSystemFaceTrackingPropertiesFB	malloc(MemoryStack the stack from which to allocate stack) Returns a new `XrSystemFaceTrackingPropertiesFB` instance allocated on the specified `MemoryStack`.
public static XrSystemFaceTrackingPropertiesFB.Buffer	malloc(int the buffer capacity capacity, MemoryStack the stack from which to allocate stack) Returns a new `XrSystemFaceTrackingPropertiesFB.Buffer` instance allocated on the specified `MemoryStack`.
public long	next() `NULL` or a pointer to the next structure in a structure chain.
public XrSystemFaceTrackingPropertiesFB	next(long value) Sets the specified value to the `next` field.
public static long	nnext(long struct) Unsafe version of `next`.
public static void	nnext(long struct, long value) Unsafe version of `next`.
public static int	nsupportsFaceTracking(long struct) Unsafe version of `supportsFaceTracking`.
public static int	ntype(long struct) Unsafe version of `type`.
public static void	ntype(long struct, int value) Unsafe version of `type`.
public XrSystemFaceTrackingPropertiesFB	set(int type, long next) Initializes this struct with the specified values.
public XrSystemFaceTrackingPropertiesFB	Returns: this struct set(XrSystemFaceTrackingPropertiesFB the source struct src) Copies the specified struct data to this struct.
public int	sizeof() Implements abstract org.lwjgl.system.Struct.sizeof. Returns `sizeof(struct)`.
public boolean	supportsFaceTracking() an `XrBool32`, indicating if current system is capable of receiving face tracking input.
public int	type() the `XrStructureType` of this structure.
public XrSystemFaceTrackingPropertiesFB	type(int value) Sets the specified value to the `type` field.
public XrSystemFaceTrackingPropertiesFB	type$Default() Sets the `TYPE_SYSTEM_FACE_TRACKING_PROPERTIES_FB` value to the `type` field.

Field Detail

ALIGNOF	back to summary
public static final int ALIGNOF The struct alignment in bytes.

NEXT	back to summary
public static final int NEXT The struct member offsets.

SIZEOF	back to summary
public static final int SIZEOF The struct size in bytes.

SUPPORTSFACETRACKING	back to summary
public static final int SUPPORTSFACETRACKING The struct member offsets.

TYPE	back to summary
public static final int TYPE The struct member offsets.

Constructor Detail

XrSystemFaceTrackingPropertiesFB	back to summary
protected XrSystemFaceTrackingPropertiesFB(long address, ByteBuffer container)

XrSystemFaceTrackingPropertiesFB back to summary

XrSystemFaceTrackingPropertiesFB	back to summary
public XrSystemFaceTrackingPropertiesFB(ByteBuffer container) Creates a `XrSystemFaceTrackingPropertiesFB` instance at the current position of the specified `ByteBuffer` container. Changes to the buffer's content will be visible to the struct instance and vice versa. The created instance holds a strong reference to the container object.

public XrSystemFaceTrackingPropertiesFB(ByteBuffer container)

Creates a XrSystemFaceTrackingPropertiesFB instance at the current position of the specified ByteBuffer container. Changes to the buffer's content will be visible to the struct instance and vice versa.

The created instance holds a strong reference to the container object.

Method Detail

calloc	back to summary
public static XrSystemFaceTrackingPropertiesFB calloc() Returns a new `XrSystemFaceTrackingPropertiesFB` instance allocated with `memCalloc`. The instance must be explicitly freed.

calloc back to summary

calloc	back to summary
public static XrSystemFaceTrackingPropertiesFB.Buffer calloc(int capacity) Returns a new `XrSystemFaceTrackingPropertiesFB.Buffer` instance allocated with `memCalloc`. The instance must be explicitly freed. Parameters capacity:int the buffer capacity

public static XrSystemFaceTrackingPropertiesFB.Buffer calloc(int capacity)

Returns a new XrSystemFaceTrackingPropertiesFB.Buffer instance allocated with memCalloc. The instance must be explicitly freed.

Parameters

capacity:int: the buffer capacity

calloc back to summary

calloc	back to summary
public static XrSystemFaceTrackingPropertiesFB calloc(MemoryStack stack) Returns a new `XrSystemFaceTrackingPropertiesFB` instance allocated on the specified `MemoryStack` and initializes all its bits to zero. Parameters stack:MemoryStack the stack from which to allocate

public static XrSystemFaceTrackingPropertiesFB calloc(MemoryStack stack)

Returns a new XrSystemFaceTrackingPropertiesFB instance allocated on the specified MemoryStack and initializes all its bits to zero.

Parameters

stack:MemoryStack: the stack from which to allocate

calloc back to summary

calloc	back to summary
public static XrSystemFaceTrackingPropertiesFB.Buffer calloc(int capacity, MemoryStack stack) Returns a new `XrSystemFaceTrackingPropertiesFB.Buffer` instance allocated on the specified `MemoryStack` and initializes all its bits to zero. Parameters capacity:int the buffer capacity stack:MemoryStack the stack from which to allocate

public static XrSystemFaceTrackingPropertiesFB.Buffer calloc(int capacity, MemoryStack stack)

Returns a new XrSystemFaceTrackingPropertiesFB.Buffer instance allocated on the specified MemoryStack and initializes all its bits to zero.

Parameters

capacity:int: the buffer capacity
stack:MemoryStack: the stack from which to allocate

create back to summary

create	back to summary
protected XrSystemFaceTrackingPropertiesFB create(long address, ByteBuffer container) Implements abstract org.lwjgl.system.Struct.create. Doc from org.lwjgl.system.Struct.create. Similar to `the constructor`, but returns the exact type of the `Struct` subclass. Effectively, every `Struct` instance is a factory for more instances of the same type. This is used by `StructBuffer`. Parameters address:long the struct memory address container:ByteBuffer an optional container buffer, to be referenced strongly by the struct instance. Annotations @Override

protected XrSystemFaceTrackingPropertiesFB create(long address, ByteBuffer container)

Implements abstract org.lwjgl.system.Struct.create.

Doc from org.lwjgl.system.Struct.create.

Similar to the constructor, but returns the exact type of the Struct subclass.

Effectively, every Struct instance is a factory for more instances of the same type. This is used by StructBuffer.

Parameters

address:long: the struct memory address
container:ByteBuffer: an optional container buffer, to be referenced strongly by the struct instance.

Annotations

@Override

create	back to summary
public static XrSystemFaceTrackingPropertiesFB create() Returns a new `XrSystemFaceTrackingPropertiesFB` instance allocated with `BufferUtils`.

create	back to summary
public static XrSystemFaceTrackingPropertiesFB create(long address) Returns a new `XrSystemFaceTrackingPropertiesFB` instance for the specified memory address.

create back to summary

create	back to summary
public static XrSystemFaceTrackingPropertiesFB.Buffer create(int capacity) Returns a new `XrSystemFaceTrackingPropertiesFB.Buffer` instance allocated with `BufferUtils`. Parameters capacity:int the buffer capacity

public static XrSystemFaceTrackingPropertiesFB.Buffer create(int capacity)

Returns a new XrSystemFaceTrackingPropertiesFB.Buffer instance allocated with BufferUtils.

Parameters

capacity:int: the buffer capacity

create back to summary

create	back to summary
public static XrSystemFaceTrackingPropertiesFB.Buffer create(long address, int capacity) Create a `XrSystemFaceTrackingPropertiesFB.Buffer` instance at the specified memory. Parameters address:long the memory address capacity:int the buffer capacity

public static XrSystemFaceTrackingPropertiesFB.Buffer create(long address, int capacity)

Create a XrSystemFaceTrackingPropertiesFB.Buffer instance at the specified memory.

Parameters

address:long: the memory address
capacity:int: the buffer capacity

createSafe back to summary

createSafe	back to summary
public static XrSystemFaceTrackingPropertiesFB createSafe(long address) Like `create`, but returns `null` if `address` is `NULL`. Annotations @Nullable

public static XrSystemFaceTrackingPropertiesFB createSafe(long address)

Like create, but returns null if address is NULL.

Annotations

@Nullable

createSafe back to summary

createSafe	back to summary
public static XrSystemFaceTrackingPropertiesFB.Buffer createSafe(long address, int capacity) Like `create`, but returns `null` if `address` is `NULL`. Annotations @Nullable

public static XrSystemFaceTrackingPropertiesFB.Buffer createSafe(long address, int capacity)

Like create, but returns null if address is NULL.

Annotations

@Nullable

malloc	back to summary
public static XrSystemFaceTrackingPropertiesFB malloc() Returns a new `XrSystemFaceTrackingPropertiesFB` instance allocated with `memAlloc`. The instance must be explicitly freed.

malloc back to summary

malloc	back to summary
public static XrSystemFaceTrackingPropertiesFB.Buffer malloc(int capacity) Returns a new `XrSystemFaceTrackingPropertiesFB.Buffer` instance allocated with `memAlloc`. The instance must be explicitly freed. Parameters capacity:int the buffer capacity

public static XrSystemFaceTrackingPropertiesFB.Buffer malloc(int capacity)

Returns a new XrSystemFaceTrackingPropertiesFB.Buffer instance allocated with memAlloc. The instance must be explicitly freed.

Parameters

capacity:int: the buffer capacity

malloc back to summary

malloc	back to summary
public static XrSystemFaceTrackingPropertiesFB malloc(MemoryStack stack) Returns a new `XrSystemFaceTrackingPropertiesFB` instance allocated on the specified `MemoryStack`. Parameters stack:MemoryStack the stack from which to allocate

public static XrSystemFaceTrackingPropertiesFB malloc(MemoryStack stack)

Returns a new XrSystemFaceTrackingPropertiesFB instance allocated on the specified MemoryStack.

Parameters

stack:MemoryStack: the stack from which to allocate

malloc back to summary

malloc	back to summary
public static XrSystemFaceTrackingPropertiesFB.Buffer malloc(int capacity, MemoryStack stack) Returns a new `XrSystemFaceTrackingPropertiesFB.Buffer` instance allocated on the specified `MemoryStack`. Parameters capacity:int the buffer capacity stack:MemoryStack the stack from which to allocate

public static XrSystemFaceTrackingPropertiesFB.Buffer malloc(int capacity, MemoryStack stack)

Returns a new XrSystemFaceTrackingPropertiesFB.Buffer instance allocated on the specified MemoryStack.

Parameters

capacity:int: the buffer capacity
stack:MemoryStack: the stack from which to allocate

next back to summary

next	back to summary
public long next() `NULL` or a pointer to the next structure in a structure chain. No such structures are defined in core OpenXR or this extension. Annotations @NativeType:void *

public long next()

NULL or a pointer to the next structure in a structure chain. No such structures are defined in core OpenXR or this extension.

Annotations

@NativeType:void *

next	back to summary
public XrSystemFaceTrackingPropertiesFB next(long value) Sets the specified value to the `next` field.

nnext	back to summary
public static long nnext(long struct) Unsafe version of `next`.

nnext	back to summary
public static void nnext(long struct, long value) Unsafe version of `next`.

nsupportsFaceTracking	back to summary
public static int nsupportsFaceTracking(long struct) Unsafe version of `supportsFaceTracking`.

ntype	back to summary
public static int ntype(long struct) Unsafe version of `type`.

ntype	back to summary
public static void ntype(long struct, int value) Unsafe version of `type`.

set	back to summary
public XrSystemFaceTrackingPropertiesFB set(int type, long next) Initializes this struct with the specified values.

set	back to summary
public XrSystemFaceTrackingPropertiesFB set(XrSystemFaceTrackingPropertiesFB src) Copies the specified struct data to this struct. Parameters src:XrSystemFaceTrackingPropertiesFB the source struct Returns:XrSystemFaceTrackingPropertiesFB this struct

set

back to summary

public XrSystemFaceTrackingPropertiesFB set(XrSystemFaceTrackingPropertiesFB src)

Copies the specified struct data to this struct.

Parameters

src:XrSystemFaceTrackingPropertiesFB: the source struct

Returns:XrSystemFaceTrackingPropertiesFB

this struct

sizeof back to summary

sizeof	back to summary
public int sizeof() Implements abstract org.lwjgl.system.Struct.sizeof. Doc from org.lwjgl.system.Struct.sizeof. Returns `sizeof(struct)`. Annotations @Override

public int sizeof()

Implements abstract org.lwjgl.system.Struct.sizeof.

Doc from org.lwjgl.system.Struct.sizeof.

Returns sizeof(struct).

Annotations

@Override

supportsFaceTracking back to summary

supportsFaceTracking	back to summary
public boolean supportsFaceTracking() an `XrBool32`, indicating if current system is capable of receiving face tracking input. Annotations @NativeType:XrBool32

public boolean supportsFaceTracking()

an XrBool32, indicating if current system is capable of receiving face tracking input.

Annotations

@NativeType:XrBool32

type back to summary

type	back to summary
public int type() the `XrStructureType` of this structure. Annotations @NativeType:XrStructureType

public int type()

the XrStructureType of this structure.

Annotations

@NativeType:XrStructureType

type	back to summary
public XrSystemFaceTrackingPropertiesFB type(int value) Sets the specified value to the `type` field.

type$Default	back to summary
public XrSystemFaceTrackingPropertiesFB type$Default() Sets the `TYPE_SYSTEM_FACE_TRACKING_PROPERTIES_FB` value to the `type` field.

org.lwjgl.openxr back to summary

public Class XrSystemFaceTrackingPropertiesFB.Buffer

Class Inheritance

extends StructBuffer<XrSystemFaceTrackingPropertiesFB, XrSystemFaceTrackingPropertiesFB.Buffer>
implements NativeResource

java.lang.Object
org.lwjgl.system.Pointer.Default
org.lwjgl.system.CustomBuffer
org.lwjgl.system.StructBuffer
org.lwjgl.openxr.XrSystemFaceTrackingPropertiesFB.Buffer

All Implemented Interfaces

org.lwjgl.system.NativeResource, java.lang.AutoCloseable

An array of XrSystemFaceTrackingPropertiesFB structs.

Field Summary

Modifier and Type	Field and Description
private static final XrSystemFaceTrackingPropertiesFB	ELEMENT_FACTORY

Constructor Summary

Access	Constructor and Description
public	Buffer(ByteBuffer container) Creates a new `XrSystemFaceTrackingPropertiesFB.Buffer` instance backed by the specified container.
public	Buffer(long address, int cap)
pack-priv	Buffer(long address, ByteBuffer container, int mark, int pos, int lim, int cap)

Method Summary

Modifier and Type	Method and Description
protected XrSystemFaceTrackingPropertiesFB	getElementFactory() Implements abstract org.lwjgl.system.StructBuffer.getElementFactory.
public long	Returns: the value of the `XrSystemFaceTrackingPropertiesFB#next` field. next()
public XrSystemFaceTrackingPropertiesFB.Buffer	next(long value) Sets the specified value to the `XrSystemFaceTrackingPropertiesFB#next` field.
protected XrSystemFaceTrackingPropertiesFB.Buffer	self() Implements abstract org.lwjgl.system.CustomBuffer.self.
public boolean	Returns: the value of the `XrSystemFaceTrackingPropertiesFB#supportsFaceTracking` field. supportsFaceTracking()
public int	Returns: the value of the `XrSystemFaceTrackingPropertiesFB#type` field. type()
public XrSystemFaceTrackingPropertiesFB.Buffer	type(int value) Sets the specified value to the `XrSystemFaceTrackingPropertiesFB#type` field.
public XrSystemFaceTrackingPropertiesFB.Buffer	type$Default() Sets the `TYPE_SYSTEM_FACE_TRACKING_PROPERTIES_FB` value to the `XrSystemFaceTrackingPropertiesFB#type` field.

Inherited from org.lwjgl.system.StructBuffer:: apply apply forEach get get get get iterator parallelStream put put sizeof spliterator stream

Field Detail

ELEMENT_FACTORY	back to summary
private static final XrSystemFaceTrackingPropertiesFB ELEMENT_FACTORY

Constructor Detail

Buffer back to summary

Buffer	back to summary
public Buffer(ByteBuffer container) Creates a new `XrSystemFaceTrackingPropertiesFB.Buffer` instance backed by the specified container. Changes to the container's content will be visible to the struct buffer instance and vice versa. The two buffers' position, limit, and mark values will be independent. The new buffer's position will be zero, its capacity and its limit will be the number of bytes remaining in this buffer divided by `XrSystemFaceTrackingPropertiesFB#SIZEOF`, and its mark will be undefined. The created buffer instance holds a strong reference to the container object.

public Buffer(ByteBuffer container)

Creates a new XrSystemFaceTrackingPropertiesFB.Buffer instance backed by the specified container.

Changes to the container's content will be visible to the struct buffer instance and vice versa. The two buffers' position, limit, and mark values will be independent. The new buffer's position will be zero, its capacity and its limit will be the number of bytes remaining in this buffer divided by XrSystemFaceTrackingPropertiesFB#SIZEOF, and its mark will be undefined.

The created buffer instance holds a strong reference to the container object.

Buffer	back to summary
public Buffer(long address, int cap)

Buffer	back to summary
pack-priv Buffer(long address, ByteBuffer container, int mark, int pos, int lim, int cap)

Method Detail

getElementFactory	back to summary
protected XrSystemFaceTrackingPropertiesFB getElementFactory() Implements abstract org.lwjgl.system.StructBuffer.getElementFactory. Annotations @Override

getElementFactory

back to summary

protected XrSystemFaceTrackingPropertiesFB getElementFactory()

Implements abstract org.lwjgl.system.StructBuffer.getElementFactory.

Annotations

@Override

next	back to summary
public long next() Returns:long the value of the `XrSystemFaceTrackingPropertiesFB#next` field. Annotations @NativeType:void *

next	back to summary
public XrSystemFaceTrackingPropertiesFB.Buffer next(long value) Sets the specified value to the `XrSystemFaceTrackingPropertiesFB#next` field.

self

back to summary

protected XrSystemFaceTrackingPropertiesFB.Buffer self()

Implements abstract org.lwjgl.system.CustomBuffer.self.

Annotations

@Override

supportsFaceTracking	back to summary
public boolean supportsFaceTracking() Returns:boolean the value of the `XrSystemFaceTrackingPropertiesFB#supportsFaceTracking` field. Annotations @NativeType:XrBool32

type	back to summary
public int type() Returns:int the value of the `XrSystemFaceTrackingPropertiesFB#type` field. Annotations @NativeType:XrStructureType

type	back to summary
public XrSystemFaceTrackingPropertiesFB.Buffer type(int value) Sets the specified value to the `XrSystemFaceTrackingPropertiesFB#type` field.

type$Default	back to summary
public XrSystemFaceTrackingPropertiesFB.Buffer type$Default() Sets the `TYPE_SYSTEM_FACE_TRACKING_PROPERTIES_FB` value to the `XrSystemFaceTrackingPropertiesFB#type` field.