Struct InputStateBlock

Information about a memory region storing input state.

Inherited Members
Namespace: UnityEngine.InputSystem.LowLevel
Syntax
public struct InputStateBlock
Remarks

Input state is kept in raw memory blocks. All state is centrally managed by the input system; controls cannot keep their own independent state.

Each state block is tagged with a format code indicating the storage format used for the memory block. This can either be one out of a set of primitive formats (such as "INT") or a custom format code indicating a more complex format.

Memory using primitive formats can be converted to and from primitive values directly by this struct.

State memory is bit-addressable, meaning that it can be offset from a byte address in bits (bitOffset) and is sized in bits instead of bytes (sizeInBits). However, in practice, bit-addressing memory reads and writes are only supported on the FormatBit.

Input state memory is restricted to a maximum of 4GB in size. Offsets are recorded in 32 bits.

Fields

AutomaticOffset

Declaration
public const uint AutomaticOffset = 4294967294U
Field Value
Type Description
UInt32

FormatBit

Format code for a variable-width bitfield representing an unsigned value, i.e. all bits including the highest one represent the magnitude of the value.

Declaration
public static readonly FourCC FormatBit
Field Value
Type Description
FourCC
See Also

FormatByte

Format code for an 8-bit unsigned integer value.

Declaration
public static readonly FourCC FormatByte
Field Value
Type Description
FourCC
See Also

FormatDouble

Format code for a 64-bit floating-point value.

Declaration
public static readonly FourCC FormatDouble
Field Value
Type Description
FourCC
See Also

FormatFloat

Format code for a 32-bit floating-point value.

Declaration
public static readonly FourCC FormatFloat
Field Value
Type Description
FourCC
See Also

FormatInt

Format code for a 32-bit signed integer value.

Declaration
public static readonly FourCC FormatInt
Field Value
Type Description
FourCC
See Also

FormatLong

Format code for a 64-bit signed integer value.

Declaration
public static readonly FourCC FormatLong
Field Value
Type Description
FourCC
See Also

FormatQuaternion

Declaration
public static readonly FourCC FormatQuaternion
Field Value
Type Description
FourCC

FormatSBit

Format code for a variable-width bitfield representing a signed value, i.e. the highest bit is used as a sign bit (0=unsigned, 1=signed) and the remaining bits represent the magnitude of the value.

Declaration
public static readonly FourCC FormatSBit
Field Value
Type Description
FourCC
See Also

FormatSByte

Format code for an 8-bit signed integer value.

Declaration
public static readonly FourCC FormatSByte
Field Value
Type Description
FourCC
See Also

FormatShort

Format code for a 16-bit signed integer value.

Declaration
public static readonly FourCC FormatShort
Field Value
Type Description
FourCC
See Also

FormatUInt

Format code for a 32-bit unsigned integer value.

Declaration
public static readonly FourCC FormatUInt
Field Value
Type Description
FourCC
See Also

FormatULong

Format code for a 64-bit unsigned integer value.

Declaration
public static readonly FourCC FormatULong
Field Value
Type Description
FourCC
See Also

FormatUShort

Format code for a 16-bit unsigned integer value.

Declaration
public static readonly FourCC FormatUShort
Field Value
Type Description
FourCC
See Also

FormatVector2

Declaration
public static readonly FourCC FormatVector2
Field Value
Type Description
FourCC

FormatVector2Byte

Declaration
public static readonly FourCC FormatVector2Byte
Field Value
Type Description
FourCC

FormatVector2Short

Declaration
public static readonly FourCC FormatVector2Short
Field Value
Type Description
FourCC

FormatVector3

Declaration
public static readonly FourCC FormatVector3
Field Value
Type Description
FourCC

FormatVector3Byte

Declaration
public static readonly FourCC FormatVector3Byte
Field Value
Type Description
FourCC

FormatVector3Short

Declaration
public static readonly FourCC FormatVector3Short
Field Value
Type Description
FourCC

InvalidOffset

Declaration
public const uint InvalidOffset = 4294967295U
Field Value
Type Description
UInt32

Properties

bitOffset

Declaration
public uint bitOffset { get; set; }
Property Value
Type Description
UInt32

byteOffset

Declaration
public uint byteOffset { get; set; }
Property Value
Type Description
UInt32

format

Type identifier for the memory layout used by the state.

Declaration
public FourCC format { get; set; }
Property Value
Type Description
FourCC
Remarks

Used for safety checks to make sure that when the system copies state memory, it copies between compatible layouts. If set to a primitive state format, also used to determine the size of the state block.

sizeInBits

Declaration
public uint sizeInBits { get; set; }
Property Value
Type Description
UInt32

Methods

CopyToFrom(Void*, Void*)

Declaration
public void CopyToFrom(void *toStatePtr, void *fromStatePtr)
Parameters
Type Name Description
Void* toStatePtr
Void* fromStatePtr

GetPrimitiveFormatFromType(Type)

Declaration
public static FourCC GetPrimitiveFormatFromType(Type type)
Parameters
Type Name Description
Type type
Returns
Type Description
FourCC

GetSizeOfPrimitiveFormatInBits(FourCC)

Declaration
public static int GetSizeOfPrimitiveFormatInBits(FourCC type)
Parameters
Type Name Description
FourCC type
Returns
Type Description
Int32

ReadDouble(Void*)

Declaration
public double ReadDouble(void *statePtr)
Parameters
Type Name Description
Void* statePtr
Returns
Type Description
Double

ReadFloat(Void*)

Declaration
public float ReadFloat(void *statePtr)
Parameters
Type Name Description
Void* statePtr
Returns
Type Description
Single

ReadInt(Void*)

Declaration
public int ReadInt(void *statePtr)
Parameters
Type Name Description
Void* statePtr
Returns
Type Description
Int32

Write(Void*, PrimitiveValue)

Declaration
public void Write(void *statePtr, PrimitiveValue value)
Parameters
Type Name Description
Void* statePtr
PrimitiveValue value

WriteDouble(Void*, Double)

Declaration
public void WriteDouble(void *statePtr, double value)
Parameters
Type Name Description
Void* statePtr
Double value

WriteFloat(Void*, Single)

Declaration
public void WriteFloat(void *statePtr, float value)
Parameters
Type Name Description
Void* statePtr
Single value

WriteInt(Void*, Int32)

Declaration
public void WriteInt(void *statePtr, int value)
Parameters
Type Name Description
Void* statePtr
Int32 value

See Also