AZ::Meshlets::SharedBuffer Class Reference

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#include <SharedBuffer.h>

Inherits AZ::Meshlets::SharedBufferInterface, and SystemTickBus::Handler.

Public Member Functions
	AZ_RTTI (AZ::Meshlets::SharedBuffer, "{6005990E-3BBF-4946-9F2B-6A7739912100}", AZ::Meshlets::SharedBufferInterface)
	SharedBuffer (AZStd::string bufferName, uint32_t sharedBufferSize, AZStd::vector< SrgBufferDescriptor > &buffersDescriptors)
void	Init (AZStd::string bufferName, AZStd::vector< SrgBufferDescriptor > &buffersDescriptors)
AZStd::intrusive_ptr< SharedBufferAllocation >	Allocate (size_t byteCount) override
void	DeAllocate (RHI::VirtualAddress allocation) override
void	DeAllocateNoSignal (RHI::VirtualAddress allocation) override
Data::Instance< RPI::Buffer >	GetBuffer () override
	Returns the buffer that is used for all skinned mesh outputs.
bool	UpdateData (const void *sourceData, uint64_t sourceDataSizeInBytes, uint64_t bufferByteOffset=0) override
	Update the content of an area within the shared buffer.
Public Member Functions inherited from AZ::Meshlets::SharedBufferInterface
	AZ_RTTI (AZ::Meshlets::SharedBufferInterface, "{6048DAF9-7A05-41B3-94C8-FBBDB3A187D2}")
virtual Data::Instance< RPI::Buffer >	GetBuffer ()=0
	Returns the buffer that is used for all skinned mesh outputs.
virtual AZStd::intrusive_ptr< SharedBufferAllocation >	Allocate (size_t byteCount)=0
virtual void	DeAllocate (RHI::VirtualAddress allocation)=0
virtual void	DeAllocateNoSignal (RHI::VirtualAddress allocation)=0
virtual bool	UpdateData (const void *sourceData, uint64_t sourceDataSizeInBytes, uint64_t bufferByteOffset=0)=0
	Update buffer's content with sourceData at an offset of bufferByteOffset.
	AZ_DISABLE_COPY_MOVE (SharedBufferInterface)

Additional Inherited Members
Static Public Member Functions inherited from AZ::Meshlets::SharedBufferInterface
static SharedBufferInterface *	Get ()

Detailed Description

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===================================================================== This class represents a single RPI::Buffer used to allocate sub-buffers from the existing buffer that can then be used per draw. In a way, this buffer is used as a memory pool from which sub-buffers are being created. This is very useful when we want to synchronize the use of these buffers via barriers so we declare and pass the entire buffer between passes and therefore we are creating a dependency and barrier for this single buffer, yet as a result all sub-buffers are now getting synced between passes.

Member Function Documentation

Allocate()

AZStd::intrusive_ptr< SharedBufferAllocation > AZ::Meshlets::SharedBuffer::Allocate ( size_t  byteCount )

overridevirtual

If the allocation succeeds, returns a ref-counted pointer to a VirtualAddress which will be automatically freed if the ref-count drops to zero If the allocation fails, returns nullptr

Implements AZ::Meshlets::SharedBufferInterface.

DeAllocate()

void AZ::Meshlets::SharedBuffer::DeAllocate ( RHI::VirtualAddress  allocation )

overridevirtual

Mark the memory as available and queue garbage collection to recycle it later (see RHI::Allocator::DeAllocate) After garbage collection is done signal handlers that memory has been freed

Implements AZ::Meshlets::SharedBufferInterface.

DeAllocateNoSignal()

void AZ::Meshlets::SharedBuffer::DeAllocateNoSignal ( RHI::VirtualAddress  allocation )

overridevirtual

Same as DeAllocate, but the signal after garbage collection is ignored If multiple allocations succeeded before one failed, use this to release the successful allocations without triggering new events indicating that new memory has been freed

Implements AZ::Meshlets::SharedBufferInterface.

GetBuffer()

Data::Instance< RPI::Buffer > AZ::Meshlets::SharedBuffer::GetBuffer ( )

overridevirtual

Returns the buffer that is used for all skinned mesh outputs.

Implements AZ::Meshlets::SharedBufferInterface.

UpdateData()

bool AZ::Meshlets::SharedBuffer::UpdateData ( const void *  sourceData, uint64_t  sourceDataSizeInBytes, uint64_t  bufferByteOffset = 0  )

overridevirtual

Update the content of an area within the shared buffer.

Implements AZ::Meshlets::SharedBufferInterface.

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The documentation for this class was generated from the following file:

• Gems/Meshlets/Code/Source/Meshlets/SharedBuffer.h