FRDGSubresourceState | Unreal Engine 5.6 Documentation

Used for tracking the state of an individual subresource during execution.


Name	FRDGSubresourceState
Type	struct
Header File	/Engine/Source/Runtime/RenderCore/Public/RenderGraphResources.h
Include Path	#include "RenderGraphResources.h"

Syntax

struct FRDGSubresourceState

Name	Remarks	Include Path	Unreal Specifiers
FRDGSubresourceState ()		RenderGraphResources.h
FRDGSubresourceState ( ERHIAccess InAccess )		RenderGraphResources.h
FRDGSubresourceState ( ERHIPipeline Pipeline, FRDGPassHandle PassHandle )		RenderGraphResources.h

Name	Type	Remarks	Include Path
Access	ERHIAccess	The last used access on the pass.	RenderGraphResources.h
BarrierLocation	ERDGBarrierLocation	Used to specify whether the state is applied during the prologue or epilogue of the pass.	RenderGraphResources.h
FirstPass	FRDGPassHandlesByPipeline	The first pass in this state.	RenderGraphResources.h
Flags	EResourceTransitionFlags	The last used transition flags on the pass.	RenderGraphResources.h
LastPass	FRDGPassHandlesByPipeline	The last pass in this state.	RenderGraphResources.h
NoUAVBarrierFilter	FRDGViewUniqueFilter	The last no-UAV barrier to be used by this subresource.	RenderGraphResources.h
ReservedCommitHandle	FRDGBufferReservedCommitHandle	Whether this subresource state represents a commit operation for a reserved resource.	RenderGraphResources.h

Name	Remarks	Include Path
FRDGPassHandle GetFirstPass()	Returns the first pass across either pipe.	RenderGraphResources.h
FRDGPassHandle GetLastPass()	Returns the last pass across either pipe.	RenderGraphResources.h
ERHIPipeline GetPipelines()	Returns the pipeline mask this state is used on.	RenderGraphResources.h
bool IsUsedBy ( ERHIPipeline Pipeline ) const	Returns whether the state is used by the pipeline.	RenderGraphResources.h
void SetPass ( ERHIPipeline Pipeline, FRDGPassHandle PassHandle )	Initializes the first and last pass and the pipeline. Clears any other pass state.	RenderGraphResources.h
void Validate()	Validates that the state is in a correct configuration for use.	RenderGraphResources.h

Name	Remarks	Include Path	Unreal Specifiers
static bool IsMergeAllowed ( ERDGViewableResourceType ResourceType, const FRDGSubresourceState& Previous, const FRDGSubresourceState& Next )	Given a before and after state, returns whether they can be merged into a single state.	RenderGraphResources.h
static bool IsTransitionRequired ( const FRDGSubresourceState& Previous, const FRDGSubresourceState& Next )	Given a before and after state, returns whether a resource barrier is required.	RenderGraphResources.h