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> Unreal Engine API Reference > Runtime > RenderCore > FGlobalDynamicReadBuffer

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FGlobalDynamicReadBuffer

A system for dynamically allocating GPU memory for rendering.

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Inheritance Hierarchy

FRenderResource

FGlobalDynamicReadBuffer

References

Module	RenderCore
Header	/Engine/Source/Runtime/RenderCore/Public/DynamicBufferAllocator.h
Include	#include "DynamicBufferAllocator.h"

Syntax

class FGlobalDynamicReadBuffer : public FRenderResource

Remarks

A system for dynamically allocating GPU memory for rendering. Note that this must derive from FRenderResource so that we can safely free the shader resource views for OpenGL and other platforms. If we wait until the module is shutdown, the renderer RHI will have already been destroyed and we can execute code on invalid data. By making ourself a render resource, we clean up immediately before the renderer dies.

Variables

	Name	Description
FDynamicReadBuf...	FloatBufferPool	The pools of read buffers from which allocations are made.
FDynamicReadBuf...	Int32BufferPool
size_t	TotalAllocatedSinceLastCommit	A total of all allocations made since the last commit. Used to alert about spikes in memory usage.

Constructors

	Name	Description
	FGlobalDynamicReadBuffer()

Destructors

	Name	Description
	~FGlobalDynamicReadBuffer()

Functions

	Name	Description
FAllocation	AllocateFloat ( uint32 Num )
FAllocation	AllocateInt32 ( uint32 Num )
void	Cleanup()
void	Commit()	Commits allocated memory to the GPU.
bool	IsRenderAlarmLoggingEnabled()	Returns true if log statements should be made because we exceeded GMaxVertexBytesAllocatedPerFrame

Overridden from FRenderResource

		Name	Description
	void	InitRHI()	Initializes the RHI resources used by this resource.
	void	ReleaseRHI()	Releases the RHI resources used by this resource.

Classes

	Name	Description
	FAllocation	Information regarding an allocation from this buffer.

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