java.lang.Object
- org.lwjgl.system.Pointer.Default
- - org.lwjgl.system.Struct
  - - org.lwjgl.vulkan.VkBufferMemoryBarrier

All Implemented Interfaces:

java.lang.AutoCloseable, NativeResource, Pointer
```
public class VkBufferMemoryBarrier
extends Struct
implements NativeResource
```
Structure specifying a buffer memory barrier.
Description

The first access scope is limited to access to memory through the specified buffer range, via access types in the source access mask specified by srcAccessMask. If srcAccessMask includes ACCESS_HOST_WRITE_BIT, memory writes performed by that access type are also made visible, as that access type is not performed through a resource.

The second access scope is limited to access to memory through the specified buffer range, via access types in the destination access mask. specified by dstAccessMask. If dstAccessMask includes ACCESS_HOST_WRITE_BIT or ACCESS_HOST_READ_BIT, available memory writes are also made visible to accesses of those types, as those access types are not performed through a resource.

If srcQueueFamilyIndex is not equal to dstQueueFamilyIndex, and srcQueueFamilyIndex is equal to the current queue family, then the memory barrier defines a queue family release operation for the specified buffer range, and the second access scope includes no access, as if dstAccessMask was 0.

If dstQueueFamilyIndex is not equal to srcQueueFamilyIndex, and dstQueueFamilyIndex is equal to the current queue family, then the memory barrier defines a queue family acquire operation for the specified buffer range, and the first access scope includes no access, as if srcAccessMask was 0.

Valid Usage
- offset must be less than the size of buffer
- If size is not equal to WHOLE_SIZE, size must be greater than 0
- If size is not equal to WHOLE_SIZE, size must be less than or equal to than the size of buffer minus offset
- If buffer was created with a sharing mode of SHARING_MODE_CONCURRENT, at least one of srcQueueFamilyIndex and dstQueueFamilyIndex must be QUEUE_FAMILY_IGNORED
- If buffer was created with a sharing mode of SHARING_MODE_CONCURRENT, and one of srcQueueFamilyIndex and dstQueueFamilyIndex is QUEUE_FAMILY_IGNORED, the other must be QUEUE_FAMILY_IGNORED or a special queue family reserved for external memory ownership transfers, as described in Queue Family Ownership Transfer.
- If buffer was created with a sharing mode of SHARING_MODE_EXCLUSIVE and srcQueueFamilyIndex is QUEUE_FAMILY_IGNORED, dstQueueFamilyIndex must also be QUEUE_FAMILY_IGNORED
- If buffer was created with a sharing mode of SHARING_MODE_EXCLUSIVE and srcQueueFamilyIndex is not QUEUE_FAMILY_IGNORED, it must be a valid queue family or a special queue family reserved for external memory transfers, as described in Queue Family Ownership Transfer.
- If buffer was created with a sharing mode of SHARING_MODE_EXCLUSIVE and dstQueueFamilyIndex is not QUEUE_FAMILY_IGNORED, it must be a valid queue family or a special queue family reserved for external memory transfers, as described in Queue Family Ownership Transfer.
- If buffer was created with a sharing mode of SHARING_MODE_EXCLUSIVE, and srcQueueFamilyIndex and dstQueueFamilyIndex are not QUEUE_FAMILY_IGNORED, at least one of them must be the same as the family of the queue that will execute this barrier
- If buffer is non-sparse then it must be bound completely and contiguously to a single VkDeviceMemory object
Valid Usage (Implicit)
- sType must be STRUCTURE_TYPE_BUFFER_MEMORY_BARRIER
- pNext must be NULL
- srcAccessMask must be a valid combination of VkAccessFlagBits values
- dstAccessMask must be a valid combination of VkAccessFlagBits values
- buffer must be a valid VkBuffer handle
See Also

CmdPipelineBarrier, CmdWaitEvents

Member documentation
- sType – the type of this structure.
- pNext – NULL or a pointer to an extension-specific structure.
- srcAccessMask – a bitmask of VkAccessFlagBits specifying a source access mask.
- dstAccessMask – a bitmask of VkAccessFlagBits specifying a destination access mask.
- srcQueueFamilyIndex – the source queue family for a queue family ownership transfer.
- dstQueueFamilyIndex – the destination queue family for a queue family ownership transfer.
- buffer – a handle to the buffer whose backing memory is affected by the barrier.
- offset – an offset in bytes into the backing memory for buffer; this is relative to the base offset as bound to the buffer (see BindBufferMemory).
- size – a size in bytes of the affected area of backing memory for buffer, or WHOLE_SIZE to use the range from offset to the end of the buffer.
Layout
```
 struct VkBufferMemoryBarrier {
     VkStructureType sType;
     void const * pNext;
     VkAccessFlags srcAccessMask;
     VkAccessFlags dstAccessMask;
     uint32_t srcQueueFamilyIndex;
     uint32_t dstQueueFamilyIndex;
     VkBuffer buffer;
     VkDeviceSize offset;
     VkDeviceSize size;
 }
```

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class VkBufferMemoryBarrier.Buffer
An array of VkBufferMemoryBarrier structs.
- Nested classes/interfaces inherited from interface org.lwjgl.system.Pointer
  Pointer.Default

Field Summary

Fields
Modifier and Type	Field	Description
`static int`	`ALIGNOF`	The struct alignment in bytes.
`static int`	`BUFFER DSTACCESSMASK DSTQUEUEFAMILYINDEX OFFSET PNEXT SIZE`	The struct member offsets.
`static int`	`SIZEOF`	The struct size in bytes.
`static int`	`SRCACCESSMASK SRCQUEUEFAMILYINDEX STYPE`	The struct member offsets.

Fields inherited from interface org.lwjgl.system.Pointer
BITS32, BITS64, CLONG_SHIFT, CLONG_SIZE, POINTER_SHIFT, POINTER_SIZE

Constructor Summary

Constructors
Constructor	Description
`VkBufferMemoryBarrier(java.nio.ByteBuffer container)`	Creates a `VkBufferMemoryBarrier` instance at the current position of the specified `ByteBuffer` container.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`long`	`buffer()`	Returns the value of the `buffer` field.
`VkBufferMemoryBarrier`	`buffer(long value)`	Sets the specified value to the `buffer` field.
`static VkBufferMemoryBarrier`	`calloc()`	Returns a new `VkBufferMemoryBarrier` instance allocated with `memCalloc`.
`static VkBufferMemoryBarrier.Buffer`	`calloc(int capacity)`	Returns a new `VkBufferMemoryBarrier.Buffer` instance allocated with `memCalloc`.
`static VkBufferMemoryBarrier`	`callocStack()`	Returns a new `VkBufferMemoryBarrier` instance allocated on the thread-local `MemoryStack` and initializes all its bits to zero.
`static VkBufferMemoryBarrier.Buffer`	`callocStack(int capacity)`	Returns a new `VkBufferMemoryBarrier.Buffer` instance allocated on the thread-local `MemoryStack` and initializes all its bits to zero.
`static VkBufferMemoryBarrier.Buffer`	`callocStack(int capacity, MemoryStack stack)`	Returns a new `VkBufferMemoryBarrier.Buffer` instance allocated on the specified `MemoryStack` and initializes all its bits to zero.
`static VkBufferMemoryBarrier`	`callocStack(MemoryStack stack)`	Returns a new `VkBufferMemoryBarrier` instance allocated on the specified `MemoryStack` and initializes all its bits to zero.
`static VkBufferMemoryBarrier`	`create()`	Returns a new `VkBufferMemoryBarrier` instance allocated with `BufferUtils`.
`static VkBufferMemoryBarrier.Buffer`	`create(int capacity)`	Returns a new `VkBufferMemoryBarrier.Buffer` instance allocated with `BufferUtils`.
`static VkBufferMemoryBarrier`	`create(long address)`	Returns a new `VkBufferMemoryBarrier` instance for the specified memory address.
`static VkBufferMemoryBarrier.Buffer`	`create(long address, int capacity)`	Create a `VkBufferMemoryBarrier.Buffer` instance at the specified memory.
`static VkBufferMemoryBarrier`	`createSafe(long address)`	Like `create`, but returns `null` if `address` is `NULL`.
`static VkBufferMemoryBarrier.Buffer`	`createSafe(long address, int capacity)`	Like `create`, but returns `null` if `address` is `NULL`.
`int`	`dstAccessMask()`	Returns the value of the `dstAccessMask` field.
`VkBufferMemoryBarrier`	`dstAccessMask(int value)`	Sets the specified value to the `dstAccessMask` field.
`int`	`dstQueueFamilyIndex()`	Returns the value of the `dstQueueFamilyIndex` field.
`VkBufferMemoryBarrier`	`dstQueueFamilyIndex(int value)`	Sets the specified value to the `dstQueueFamilyIndex` field.
`static VkBufferMemoryBarrier`	`malloc()`	Returns a new `VkBufferMemoryBarrier` instance allocated with `memAlloc`.
`static VkBufferMemoryBarrier.Buffer`	`malloc(int capacity)`	Returns a new `VkBufferMemoryBarrier.Buffer` instance allocated with `memAlloc`.
`static VkBufferMemoryBarrier`	`mallocStack()`	Returns a new `VkBufferMemoryBarrier` instance allocated on the thread-local `MemoryStack`.
`static VkBufferMemoryBarrier.Buffer`	`mallocStack(int capacity)`	Returns a new `VkBufferMemoryBarrier.Buffer` instance allocated on the thread-local `MemoryStack`.
`static VkBufferMemoryBarrier.Buffer`	`mallocStack(int capacity, MemoryStack stack)`	Returns a new `VkBufferMemoryBarrier.Buffer` instance allocated on the specified `MemoryStack`.
`static VkBufferMemoryBarrier`	`mallocStack(MemoryStack stack)`	Returns a new `VkBufferMemoryBarrier` instance allocated on the specified `MemoryStack`.
`static long`	`nbuffer(long struct)`	Unsafe version of `buffer()`.
`static void`	`nbuffer(long struct, long value)`	Unsafe version of `buffer`.
`static int`	`ndstAccessMask(long struct)`	Unsafe version of `dstAccessMask()`.
`static void`	`ndstAccessMask(long struct, int value)`	Unsafe version of `dstAccessMask`.
`static int`	`ndstQueueFamilyIndex(long struct)`	Unsafe version of `dstQueueFamilyIndex()`.
`static void`	`ndstQueueFamilyIndex(long struct, int value)`	Unsafe version of `dstQueueFamilyIndex`.
`static long`	`noffset(long struct)`	Unsafe version of `offset()`.
`static void`	`noffset(long struct, long value)`	Unsafe version of `offset`.
`static long`	`npNext(long struct)`	Unsafe version of `pNext()`.
`static void`	`npNext(long struct, long value)`	Unsafe version of `pNext`.
`static long`	`nsize(long struct)`	Unsafe version of `size()`.
`static void`	`nsize(long struct, long value)`	Unsafe version of `size`.
`static int`	`nsrcAccessMask(long struct)`	Unsafe version of `srcAccessMask()`.
`static void`	`nsrcAccessMask(long struct, int value)`	Unsafe version of `srcAccessMask`.
`static int`	`nsrcQueueFamilyIndex(long struct)`	Unsafe version of `srcQueueFamilyIndex()`.
`static void`	`nsrcQueueFamilyIndex(long struct, int value)`	Unsafe version of `srcQueueFamilyIndex`.
`static int`	`nsType(long struct)`	Unsafe version of `sType()`.
`static void`	`nsType(long struct, int value)`	Unsafe version of `sType`.
`long`	`offset()`	Returns the value of the `offset` field.
`VkBufferMemoryBarrier`	`offset(long value)`	Sets the specified value to the `offset` field.
`long`	`pNext()`	Returns the value of the `pNext` field.
`VkBufferMemoryBarrier`	`pNext(long value)`	Sets the specified value to the `pNext` field.
`VkBufferMemoryBarrier`	`set(int sType, long pNext, int srcAccessMask, int dstAccessMask, int srcQueueFamilyIndex, int dstQueueFamilyIndex, long buffer, long offset, long size)`	Initializes this struct with the specified values.
`VkBufferMemoryBarrier`	`set(VkBufferMemoryBarrier src)`	Copies the specified struct data to this struct.
`long`	`size()`	Returns the value of the `size` field.
`VkBufferMemoryBarrier`	`size(long value)`	Sets the specified value to the `size` field.
`int`	`sizeof()`	Returns `sizeof(struct)`.
`int`	`srcAccessMask()`	Returns the value of the `srcAccessMask` field.
`VkBufferMemoryBarrier`	`srcAccessMask(int value)`	Sets the specified value to the `srcAccessMask` field.
`int`	`srcQueueFamilyIndex()`	Returns the value of the `srcQueueFamilyIndex` field.
`VkBufferMemoryBarrier`	`srcQueueFamilyIndex(int value)`	Sets the specified value to the `srcQueueFamilyIndex` field.
`int`	`sType()`	Returns the value of the `sType` field.
`VkBufferMemoryBarrier`	`sType(int value)`	Sets the specified value to the `sType` field.

Methods inherited from interface org.lwjgl.system.NativeResource
close, free

Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait

Methods inherited from class org.lwjgl.system.Pointer.Default
address, equals, hashCode, toString

Methods inherited from class org.lwjgl.system.Struct
clear, free, isNull

- Field Detail
  - SIZEOF
    
    The struct size in bytes.
  - ALIGNOF
    
    The struct alignment in bytes.
  - STYPE, PNEXT, SRCACCESSMASK, DSTACCESSMASK, SRCQUEUEFAMILYINDEX, DSTQUEUEFAMILYINDEX, BUFFER, OFFSET, SIZE
    
    The struct member offsets.
- Constructor Detail
  - VkBufferMemoryBarrier
```
public VkBufferMemoryBarrier(java.nio.ByteBuffer container)
```
    Creates a VkBufferMemoryBarrier 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
  - sizeof
```
public int sizeof()
```
    Description copied from class: Struct
    
    Returns sizeof(struct).
    
    Specified by:
    
    sizeof in class Struct
  - sType
```
public int sType()
```
    Returns the value of the sType field.
  - pNext
```
public long pNext()
```
    Returns the value of the pNext field.
  - srcAccessMask
```
public int srcAccessMask()
```
    Returns the value of the srcAccessMask field.
  - dstAccessMask
```
public int dstAccessMask()
```
    Returns the value of the dstAccessMask field.
  - srcQueueFamilyIndex
```
public int srcQueueFamilyIndex()
```
    Returns the value of the srcQueueFamilyIndex field.
  - dstQueueFamilyIndex
```
public int dstQueueFamilyIndex()
```
    Returns the value of the dstQueueFamilyIndex field.
  - buffer
```
public long buffer()
```
    Returns the value of the buffer field.
  - offset
```
public long offset()
```
    Returns the value of the offset field.
  - size
```
public long size()
```
    Returns the value of the size field.
  - sType
```
public VkBufferMemoryBarrier sType(int value)
```
    Sets the specified value to the sType field.
  - pNext
```
public VkBufferMemoryBarrier pNext(long value)
```
    Sets the specified value to the pNext field.
  - srcAccessMask
```
public VkBufferMemoryBarrier srcAccessMask(int value)
```
    Sets the specified value to the srcAccessMask field.
  - dstAccessMask
```
public VkBufferMemoryBarrier dstAccessMask(int value)
```
    Sets the specified value to the dstAccessMask field.
  - srcQueueFamilyIndex
```
public VkBufferMemoryBarrier srcQueueFamilyIndex(int value)
```
    Sets the specified value to the srcQueueFamilyIndex field.
  - dstQueueFamilyIndex
```
public VkBufferMemoryBarrier dstQueueFamilyIndex(int value)
```
    Sets the specified value to the dstQueueFamilyIndex field.
  - buffer
```
public VkBufferMemoryBarrier buffer(long value)
```
    Sets the specified value to the buffer field.
  - offset
```
public VkBufferMemoryBarrier offset(long value)
```
    Sets the specified value to the offset field.
  - size
```
public VkBufferMemoryBarrier size(long value)
```
    Sets the specified value to the size field.
  - set
```
public VkBufferMemoryBarrier set(int sType,
                                 long pNext,
                                 int srcAccessMask,
                                 int dstAccessMask,
                                 int srcQueueFamilyIndex,
                                 int dstQueueFamilyIndex,
                                 long buffer,
                                 long offset,
                                 long size)
```
    Initializes this struct with the specified values.
  - set
```
public VkBufferMemoryBarrier set(VkBufferMemoryBarrier src)
```
    Copies the specified struct data to this struct.
    
    Parameters:
    
    src - the source struct
    
    Returns:
    
    this struct
  - malloc
```
public static VkBufferMemoryBarrier malloc()
```
    Returns a new VkBufferMemoryBarrier instance allocated with memAlloc. The instance must be explicitly freed.
  - calloc
```
public static VkBufferMemoryBarrier calloc()
```
    Returns a new VkBufferMemoryBarrier instance allocated with memCalloc. The instance must be explicitly freed.
  - create
```
public static VkBufferMemoryBarrier create()
```
    Returns a new VkBufferMemoryBarrier instance allocated with BufferUtils.
  - create
```
public static VkBufferMemoryBarrier create(long address)
```
    Returns a new VkBufferMemoryBarrier instance for the specified memory address.
  - createSafe
```
@Nullable
public static VkBufferMemoryBarrier createSafe(long address)
```
    Like create, but returns null if address is NULL.
  - malloc
```
public static VkBufferMemoryBarrier.Buffer malloc(int capacity)
```
    Returns a new VkBufferMemoryBarrier.Buffer instance allocated with memAlloc. The instance must be explicitly freed.
    
    Parameters:
    
    capacity - the buffer capacity
  - calloc
```
public static VkBufferMemoryBarrier.Buffer calloc(int capacity)
```
    Returns a new VkBufferMemoryBarrier.Buffer instance allocated with memCalloc. The instance must be explicitly freed.
    
    Parameters:
    
    capacity - the buffer capacity
  - create
```
public static VkBufferMemoryBarrier.Buffer create(int capacity)
```
    Returns a new VkBufferMemoryBarrier.Buffer instance allocated with BufferUtils.
    
    Parameters:
    
    capacity - the buffer capacity
  - create
```
public static VkBufferMemoryBarrier.Buffer create(long address,
                                                  int capacity)
```
    Create a VkBufferMemoryBarrier.Buffer instance at the specified memory.
    
    Parameters:
    
    address - the memory address
    
    capacity - the buffer capacity
  - createSafe
```
@Nullable
public static VkBufferMemoryBarrier.Buffer createSafe(long address,
                                                      int capacity)
```
    Like create, but returns null if address is NULL.
  - mallocStack
```
public static VkBufferMemoryBarrier mallocStack()
```
    Returns a new VkBufferMemoryBarrier instance allocated on the thread-local MemoryStack.
  - callocStack
```
public static VkBufferMemoryBarrier callocStack()
```
    Returns a new VkBufferMemoryBarrier instance allocated on the thread-local MemoryStack and initializes all its bits to zero.
  - mallocStack
```
public static VkBufferMemoryBarrier mallocStack(MemoryStack stack)
```
    Returns a new VkBufferMemoryBarrier instance allocated on the specified MemoryStack.
    
    Parameters:
    
    stack - the stack from which to allocate
  - callocStack
```
public static VkBufferMemoryBarrier callocStack(MemoryStack stack)
```
    Returns a new VkBufferMemoryBarrier instance allocated on the specified MemoryStack and initializes all its bits to zero.
    
    Parameters:
    
    stack - the stack from which to allocate
  - mallocStack
```
public static VkBufferMemoryBarrier.Buffer mallocStack(int capacity)
```
    Returns a new VkBufferMemoryBarrier.Buffer instance allocated on the thread-local MemoryStack.
    
    Parameters:
    
    capacity - the buffer capacity
  - callocStack
```
public static VkBufferMemoryBarrier.Buffer callocStack(int capacity)
```
    Returns a new VkBufferMemoryBarrier.Buffer instance allocated on the thread-local MemoryStack and initializes all its bits to zero.
    
    Parameters:
    
    capacity - the buffer capacity
  - mallocStack
```
public static VkBufferMemoryBarrier.Buffer mallocStack(int capacity,
                                                       MemoryStack stack)
```
    Returns a new VkBufferMemoryBarrier.Buffer instance allocated on the specified MemoryStack.
    
    Parameters:
    
    stack - the stack from which to allocate
    
    capacity - the buffer capacity
  - callocStack
```
public static VkBufferMemoryBarrier.Buffer callocStack(int capacity,
                                                       MemoryStack stack)
```
    Returns a new VkBufferMemoryBarrier.Buffer instance allocated on the specified MemoryStack and initializes all its bits to zero.
    
    Parameters:
    
    stack - the stack from which to allocate
    
    capacity - the buffer capacity
  - nsType
```
public static int nsType(long struct)
```
    Unsafe version of sType().
  - npNext
```
public static long npNext(long struct)
```
    Unsafe version of pNext().
  - nsrcAccessMask
```
public static int nsrcAccessMask(long struct)
```
    Unsafe version of srcAccessMask().
  - ndstAccessMask
```
public static int ndstAccessMask(long struct)
```
    Unsafe version of dstAccessMask().
  - nsrcQueueFamilyIndex
```
public static int nsrcQueueFamilyIndex(long struct)
```
    Unsafe version of srcQueueFamilyIndex().
  - ndstQueueFamilyIndex
```
public static int ndstQueueFamilyIndex(long struct)
```
    Unsafe version of dstQueueFamilyIndex().
  - nbuffer
```
public static long nbuffer(long struct)
```
    Unsafe version of buffer().
  - noffset
```
public static long noffset(long struct)
```
    Unsafe version of offset().
  - nsize
```
public static long nsize(long struct)
```
    Unsafe version of size().
  - nsType
```
public static void nsType(long struct,
                          int value)
```
    Unsafe version of sType.
  - npNext
```
public static void npNext(long struct,
                          long value)
```
    Unsafe version of pNext.
  - nsrcAccessMask
```
public static void nsrcAccessMask(long struct,
                                  int value)
```
    Unsafe version of srcAccessMask.
  - ndstAccessMask
```
public static void ndstAccessMask(long struct,
                                  int value)
```
    Unsafe version of dstAccessMask.
  - nsrcQueueFamilyIndex
```
public static void nsrcQueueFamilyIndex(long struct,
                                        int value)
```
    Unsafe version of srcQueueFamilyIndex.
  - ndstQueueFamilyIndex
```
public static void ndstQueueFamilyIndex(long struct,
                                        int value)
```
    Unsafe version of dstQueueFamilyIndex.
  - nbuffer
```
public static void nbuffer(long struct,
                           long value)
```
    Unsafe version of buffer.
  - noffset
```
public static void noffset(long struct,
                           long value)
```
    Unsafe version of offset.
  - nsize
```
public static void nsize(long struct,
                         long value)
```
    Unsafe version of size.

Class VkBufferMemoryBarrier

Description

Valid Usage

Valid Usage (Implicit)

See Also

Member documentation

Layout

Nested Class Summary

Nested classes/interfaces inherited from interface org.lwjgl.system.Pointer

Field Summary

Fields inherited from interface org.lwjgl.system.Pointer

Constructor Summary

Method Summary

Methods inherited from interface org.lwjgl.system.NativeResource

Methods inherited from class java.lang.Object

Methods inherited from class org.lwjgl.system.Pointer.Default

Methods inherited from class org.lwjgl.system.Struct

Field Detail

SIZEOF

ALIGNOF

STYPE, PNEXT, SRCACCESSMASK, DSTACCESSMASK, SRCQUEUEFAMILYINDEX, DSTQUEUEFAMILYINDEX, BUFFER, OFFSET, SIZE

Constructor Detail

VkBufferMemoryBarrier

Method Detail

sizeof

sType

pNext

srcAccessMask

dstAccessMask

srcQueueFamilyIndex

dstQueueFamilyIndex

buffer

offset

size

sType

pNext

srcAccessMask

dstAccessMask

srcQueueFamilyIndex

dstQueueFamilyIndex

buffer

offset

size

set

set

malloc

calloc

create

create

createSafe

malloc

calloc

create

create

createSafe

mallocStack

callocStack

mallocStack

callocStack

mallocStack

callocStack

mallocStack

callocStack

nsType

npNext

nsrcAccessMask

ndstAccessMask

nsrcQueueFamilyIndex

ndstQueueFamilyIndex

nbuffer

noffset

nsize

nsType

npNext

nsrcAccessMask

ndstAccessMask

nsrcQueueFamilyIndex

ndstQueueFamilyIndex

nbuffer

noffset