A ComputePass is a leaf pass (pass with no children) that is used for GPU compute. More...

#include <ComputePass.h>

Inherits AZ::RPI::RenderPass, and ShaderReloadNotificationBus::Handler.

Inherited by AZ::RPI::DownsampleSinglePassLuminancePass, AZ::RPI::SubsurfaceScatteringPass, AZ::Render::BakeAcesOutputTransformLutPass, AZ::Render::BlendColorGradingLutsPass, AZ::Render::BloomBlurChildPass, AZ::Render::BloomCompositeChildPass, AZ::Render::BloomDownsamplePass, AZ::Render::CheckerboardColorResolvePass, AZ::Render::ChromaticAberrationPass, AZ::Render::DepthExponentiationPass, AZ::Render::DepthOfFieldWriteFocusDepthFromGpuPass, AZ::Render::DepthUpsamplePass, AZ::Render::EyeAdaptationPass, AZ::Render::FastDepthAwareBlurHorPass, AZ::Render::FastDepthAwareBlurVerPass, AZ::Render::LightCullingPass, AZ::Render::LightCullingRemap, AZ::Render::LightCullingTilePreparePass, AZ::Render::LuminanceHistogramGeneratorPass, AZ::Render::MorphTargetComputePass, AZ::Render::NewDepthOfFieldTileReducePass, AZ::Render::SkinnedMeshComputePass, AZ::Render::SsaoComputePass, and AZ::Render::TaaPass.

Public Member Functions
	AZ_RTTI (ComputePass, "{61464A74-BD35-4954-AB27-492644EA6C2A}", RenderPass)

	AZ_CLASS_ALLOCATOR (ComputePass, SystemAllocator)

void	SetTargetThreadCounts (uint32_t targetThreadCountX, uint32_t targetThreadCountY, uint32_t targetThreadCountZ)
	Sets the target total number of threads to dispatch in each dimension.

Data::Instance< ShaderResourceGroup >	GetShaderResourceGroup () const
	Returns the shader resource group.

Data::Instance< Shader >	GetShader () const
	Return the shader.

Public Member Functions inherited from AZ::RPI::RenderPass
	AZ_RTTI (RenderPass, "{9441D114-60FD-487B-B2B7-0FBBC8A96FC2}", Pass)

	AZ_CLASS_ALLOCATOR (RenderPass, SystemAllocator)

RHI::RenderAttachmentConfiguration	GetRenderAttachmentConfiguration () const

RHI::MultisampleState	GetMultisampleState () const
	Get MultisampleState of this pass from its output attachments.

Data::Instance< ShaderResourceGroup >	GetShaderResourceGroup ()
	Returns a pointer to the Pass ShaderResourceGroup.

ViewPtr	GetView () const

void	BindSrg (const RHI::ShaderResourceGroup *srg)

Public Member Functions inherited from AZ::RPI::Pass
	AZ_RTTI (Pass, "{EA34FF66-631D-433B-B449-71F5647E7BB5}", AZStd::intrusive_base)

	AZ_CLASS_ALLOCATOR (Pass, SystemAllocator)

const Name &	GetName () const
	Returns the name of the pass (example: Bloom)

const Name &	GetPathName () const
	Return the path name of the pass (example: Root.SwapChain.Bloom)

uint32_t	GetTreeDepth () const
	Returns the depth of this pass in the tree hierarchy (Root depth is 0)

uint32_t	GetParentChildIndex () const
	Returns the index in the parent's array of children that this pass occupies (used for sorting passes)

uint32_t	GetInputCount () const
	Returns the number of input attachment bindings.

uint32_t	GetInputOutputCount () const
	Returns the number of input/output attachment bindings.

uint32_t	GetOutputCount () const
	Returns the number of output attachment bindings.

const PassTemplate *	GetPassTemplate () const

void	SetEnabled (bool enabled)

virtual bool	IsEnabled () const

bool	HasDrawListTag () const

bool	HasPipelineViewTag () const

bool	BindViewSrg () const

PassAttachmentBinding *	FindAttachmentBinding (const Name &slotName)

PassAttachmentBindingListView	GetAttachmentBindings () const
	Return the set of attachment bindings.

ParentPass *	AsParent ()
	Casts the pass to a parent pass if valid, else returns nullptr.

const ParentPass *	AsParent () const

bool	IsRootPass () const
	Returns whether the pass is the root pass.

PassTree *	GetPassTree () const
	Returns the PassTree from the pass's RenderPipeline (or nullptr if there isn't one)

void	QueueForBuildAndInitialization ()
	Queues the pass to have Build() and Initialize() called by the PassSystem on frame update.

void	QueueForRemoval ()
	Queues the pass to have RemoveFromParent() called by the PassSystem on frame update.

void	QueueForInitialization ()
	Queues the pass to have Initialize() called by the PassSystem on frame update.

void	AddAttachmentBinding (PassAttachmentBinding attachmentBinding)
	Adds an attachment binding to the list of this Pass' attachment bindings.

PassAttachmentBinding &	GetInputBinding (uint32_t index)

PassAttachmentBinding &	GetInputOutputBinding (uint32_t index)

PassAttachmentBinding &	GetOutputBinding (uint32_t index)

void	AttachBufferToSlot (AZStd::string_view slot, Data::Instance< Buffer > buffer)

void	AttachBufferToSlot (const Name &slot, Data::Instance< Buffer > buffer)

void	AttachImageToSlot (const Name &slot, Data::Instance< AttachmentImage > image)

virtual void	GetPipelineViewTags (PipelineViewTags &outTags) const
	Collect all different view tags from this pass.

virtual void	GetViewDrawListInfo (RHI::DrawListMask &outDrawListMask, PassesByDrawList &outPassesByDrawList, const PipelineViewTag &viewTag) const
	Adds this pass' DrawListTags to the outDrawListMask.

virtual RHI::DrawListTag	GetDrawListTag () const
	Check if the pass has a DrawListTag. Pass' DrawListTag can be used to filter draw items.

virtual void	SortDrawList (RHI::DrawList &drawList) const
	Function used by views to sort draw lists. Can be overridden so passes can provide custom sort functionality.

virtual const PipelineViewTag &	GetPipelineViewTag () const
	Check if the pass is associated to a view. If pass has a pipeline view tag, the rpi view assigned to this view tag will have pass's draw list tag.

virtual void	SetRenderPipeline (RenderPipeline *pipeline)
	Set render pipeline this pass belongs to.

RenderPipeline *	GetRenderPipeline () const

Scene *	GetScene () const

virtual void	Validate (PassValidationResults &validationResults)

virtual void	DebugPrint () const
	Prints the pass.

TimestampResult	GetLatestTimestampResult () const
	Return the latest Timestamp result of this pass.

PipelineStatisticsResult	GetLatestPipelineStatisticsResult () const
	Return the latest PipelineStatistic result of this pass.

virtual void	SetTimestampQueryEnabled (bool enable)
	Enables/Disables Timestamp queries for this pass.

virtual void	SetPipelineStatisticsQueryEnabled (bool enable)
	Enables/Disables PipelineStatistics queries for this pass.

bool	ReadbackAttachment (AZStd::shared_ptr< AttachmentReadback > readback, uint32_t readbackIndex, const Name &slotName, PassAttachmentReadbackOption option=PassAttachmentReadbackOption::Output, const RHI::ImageSubresourceRange *mipsRange=nullptr)

bool	IsTimestampQueryEnabled () const
	Returns whether the Timestamp queries is enabled/disabled for this pass.

bool	IsPipelineStatisticsQueryEnabled () const
	Returns whether the PipelineStatistics queries is enabled/disabled for this pass.

void	PrintIndent (AZStd::string &stringOutput, uint32_t indent) const
	Helper function to print spaces to indent the pass.

void	PrintPassName (AZStd::string &stringOutput, uint32_t indent=0) const
	Prints the name of the pass.

void	DebugPrintBinding (AZStd::string &stringOutput, const PassAttachmentBinding &binding) const
	Prints the attachment binding at the given index.

void	DebugPrintBindingAndConnection (AZStd::string &stringOutput, uint8_t bindingIndex) const
	Prints the attachment binding at the given index and its connection.

void	PrintErrors () const
	Prints the pass name and all the errors accumulated during build and setup.

void	PrintWarnings () const
	Prints the pass name and all the warnings accumulated during build and setup.

void	PrintMessages (const AZStd::vector< AZStd::string > &messages) const
	Helper function to print an array of messages (like errors or warnings) for a pass.

void	PrintBindingsWithoutAttachments (uint32_t slotTypeMask) const
	Prints the pass and all the list of inputs and input/outputs that are missing an attachment.

ParentPass *	GetParent () const
	Returns pointer to the parent pass.

PassState	GetPassState () const

void	UpdateConnectedBindings ()

void	UpdateConnectedInputBindings ()

void	UpdateConnectedOutputBindings ()

Public Member Functions inherited from AZ::RHI::ScopeProducer
	ScopeProducer (const ScopeId &scopeId)

const ScopeId &	GetScopeId () const
	Returns the scope id associated with this scope producer.

const Scope *	GetScope () const
	Returns the scope associated with this scope producer.

Static Public Member Functions
static Ptr< ComputePass >	Create (const PassDescriptor &descriptor)
	Creates a ComputePass.

Protected Member Functions
	ComputePass (const PassDescriptor &descriptor, AZ::Name supervariant=AZ::Name(""))

void	CompileResources (const RHI::FrameGraphCompileContext &context) override

void	MatchDimensionsToOutput ()

void	OnShaderReinitialized (const Shader &shader) override

void	OnShaderAssetReinitialized (const Data::Asset< ShaderAsset > &shaderAsset) override

void	OnShaderVariantReinitialized (const ShaderVariant &shaderVariant) override

void	LoadShader (AZ::Name supervariant=AZ::Name(""))

Protected Member Functions inherited from AZ::RPI::RenderPass
	RenderPass (const PassDescriptor &descriptor)

void	SetupFrameGraphDependencies (RHI::FrameGraphInterface frameGraph) override

void	BuildCommandList (const RHI::FrameGraphExecuteContext &context) final

void	DeclareAttachmentsToFrameGraph (RHI::FrameGraphInterface frameGraph) const

void	DeclarePassDependenciesToFrameGraph (RHI::FrameGraphInterface frameGraph) const

void	BindPassSrg (const RHI::FrameGraphCompileContext &context, Data::Instance< ShaderResourceGroup > &shaderResourceGroup)

void	CollectSrgs ()

void	ResetSrgs ()

void	SetSrgsForDraw (RHI::CommandList *commandList)

void	SetSrgsForDispatch (RHI::CommandList *commandList)

void	SetPipelineViewTag (const PipelineViewTag &viewTag)

void	AddScopeQueryToFrameGraph (RHI::FrameGraphInterface frameGraph)

Protected Member Functions inherited from AZ::RPI::Pass
	Pass (const PassDescriptor &descriptor)

PassDescriptor	GetPassDescriptor () const

void	ImportAttachments (RHI::FrameGraphAttachmentInterface attachmentDatabase)

Ptr< Pass >	FindAdjacentPass (const Name &passName)

const PassAttachmentBinding *	FindAttachmentBinding (const Name &slotName) const

Ptr< PassAttachment >	FindOwnedAttachment (const Name &attachmentName) const

Ptr< PassAttachment >	FindAttachment (const Name &slotName) const

const PassAttachmentBinding *	FindAdjacentBinding (const PassAttachmentRef &attachmentRef, const char *attachmentSourceTypeDebugName="attachment")

void	ProcessConnection (const PassConnection &connection, uint32_t slotTypeMask=0xFFFFFFFF)

void	LogError (AZStd::string &&message)

void	LogWarning (AZStd::string &&message)

void	Reset ()

void	Build (bool calledFromPassSystem=false)

void	Initialize ()

void	OnInitializationFinished ()

void	FrameBegin (FramePrepareParams params)

void	FrameEnd ()

void	UpdateReadbackAttachment (FramePrepareParams params, bool beforeAddScopes)

void	UpdateAttachmentCopy (FramePrepareParams params)

Protected Member Functions inherited from AZ::RHI::ScopeProducer
	ScopeProducer ()

void	SetHardwareQueueClass (HardwareQueueClass hardwareQueueClass)
	Sets the HardwareQueueClass on the scope.

void	SetScopeId (const ScopeId &scopeId)

void	InitScope (const ScopeId &scopeId, HardwareQueueClass hardwareQueueClass=HardwareQueueClass::Graphics)

Protected Attributes
Data::Instance< Shader >	m_shader = nullptr

Data::Instance< RPI::ShaderResourceGroup >	m_drawSrg = nullptr

RHI::DispatchItem	m_dispatchItem

bool	m_isFullscreenPass = false

PassDescriptor	m_passDescriptor

Protected Attributes inherited from AZ::RPI::RenderPass
Data::Instance< ShaderResourceGroup >	m_shaderResourceGroup = nullptr

RHI::HardwareQueueClass	m_hardwareQueueClass = RHI::HardwareQueueClass::Graphics

Protected Attributes inherited from AZ::RPI::Pass
const Name	PassNameThis {"This"}

const Name	PassNameParent {"Parent"}

const Name	PipelineKeyword {"Pipeline"}

const Name	PipelineGlobalKeyword {"PipelineGlobal"}

AZStd::fixed_vector< PassAttachmentBinding, PassAttachmentBindingCountMax >	m_attachmentBindings

AZStd::vector< Ptr< PassAttachment > >	m_ownedAttachments

AZStd::vector< Pass * >	m_executeBeforePasses

AZStd::vector< Pass * >	m_executeAfterPasses

RenderPipeline *	m_pipeline = nullptr

AZStd::shared_ptr< const PassTemplate >	m_template = nullptr

PassRequest	m_request

ParentPass *	m_parent = nullptr

PipelineViewTag	m_viewTag

struct {
union {
struct {
uint64_t m_createdByPassRequest: 1

uint64_t m_enabled: 1

uint64_t m_parentEnabled: 1

uint64_t m_alreadyCreatedChildren: 1

uint64_t m_createChildren: 1

uint64_t m_partOfHierarchy: 1

uint64_t m_hasDrawListTag: 1

uint64_t m_bindViewSrg: 1

uint64_t m_timestampQueryEnabled: 1

uint64_t m_pipelineStatisticsQueryEnabled: 1

uint64_t m_isPipelineRoot: 1

uint64_t m_containsGlobalReference: 1

}

uint64_t m_allFlags = 0

}

}	m_flags

AZStd::vector< AZStd::string >	m_errorMessages

AZStd::vector< AZStd::string >	m_warningMessages

uint32_t	m_errors = 0

uint32_t	m_warnings = 0

RHI::DrawListSortType	m_drawListSortType = RHI::DrawListSortType::KeyThenDepth

AZStd::shared_ptr< AttachmentReadback >	m_attachmentReadback

PassAttachmentReadbackOption	m_readbackOption

AZStd::weak_ptr< ImageAttachmentCopy >	m_attachmentCopy

AZStd::shared_ptr< PassData >	m_passData = nullptr
	Optional data used during pass initialization.

Additional Inherited Members
Public Types inherited from AZ::RPI::Pass
using	ChildPassIndex = RHI::Handle< uint32_t, class ChildPass >

Static Protected Attributes inherited from AZ::RPI::Pass
static const size_t	MessageLogLimit = 256

Detailed Description

A ComputePass is a leaf pass (pass with no children) that is used for GPU compute.

Member Function Documentation

◆ CompileResources()

void AZ::RPI::ComputePass::CompileResources ( const RHI::FrameGraphCompileContext & context )

overrideprotectedvirtual

This function is called after compilation of the frame graph, but before execution. The provided FrameGraphAttachmentContext allows you to access RHI views associated with attachment ids. This is the method to build ShaderResourceGroups from transient attachment views.

Reimplemented from AZ::RHI::ScopeProducer.

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

Gems/Atom/RPI/Code/Include/Atom/RPI.Public/Pass/ComputePass.h

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ CompileResources()