FShadowSceneRenderer Class Reference

#include <ShadowSceneRenderer.h>

Inheritance diagram for FShadowSceneRenderer:

Public Member Functions
	DECLARE_SCENE_EXTENSION_RENDERER (FShadowSceneRenderer, FShadowScene)
	FShadowSceneRenderer (FDeferredShadingSceneRenderer &InDeferredShadingSceneRenderer, FShadowScene &InShadowScene)
virtual void	PreInitViews (FRDGBuilder &GraphBuilder) override
TSharedPtr< FVirtualShadowMapPerLightCacheEntry >	AddLocalLightShadow (const FWholeSceneProjectedShadowInitializer &Initializer, FProjectedShadowInfo *ProjectedShadowInfo, FLightSceneInfo *LightSceneInfo, float MaxScreenRadius)
void	AddDirectionalLightShadow (FLightSceneInfo &LightSceneInfo, FViewInfo &View, float MaxNonFarCascadeDistance, TArray< FProjectedShadowInfo *, SceneRenderingAllocator > &OutShadowInfosThatNeedCulling)
void	PostInitDynamicShadowsSetup ()
void	DispatchVirtualShadowMapViewAndCullingSetup (FRDGBuilder &GraphBuilder, TConstArrayView< FProjectedShadowInfo * > VirtualShadowMapShadows)
void	PostSetupDebugRender ()
bool	HasVirtualShadowMap (FLightSceneInfo::FPersistentId LightId) const
bool	HasVirtualClipMap (FLightSceneInfo::FPersistentId LightId) const
void	BeginMarkVirtualShadowMapPages (FRDGBuilder &GraphBuilder, const FSingleLayerWaterPrePassResult *SingleLayerWaterPrePassResult, const FFrontLayerTranslucencyData &FrontLayerTranslucencyData, const Froxel::FRenderer &FroxelRenderer)
void	RenderVirtualShadowMaps (FRDGBuilder &GraphBuilder, bool bNaniteEnabled)
void	RenderVirtualShadowMapProjectionMaskBits (FRDGBuilder &GraphBuilder, FMinimalSceneTextures &SceneTextures)
void	RenderVirtualShadowMapProjection (FRDGBuilder &GraphBuilder, const FMinimalSceneTextures &SceneTextures, FLightSceneInfo::FPersistentId LightId, const FViewInfo &View, int32 ViewIndex, const FIntRect ScissorRect, EVirtualShadowMapProjectionInputType InputType, bool bModulateRGB, FTiledVSMProjection *TiledVSMProjection, FRDGTextureRef OutputShadowMaskTexture)
TArray< int32, SceneRenderingAllocator >	GatherClipmapIds (int32 ViewIndex) const
void	ApplyVirtualShadowMapProjectionForLight (FRDGBuilder &GraphBuilder, const FMinimalSceneTextures &SceneTextures, const FLightSceneInfo *LightSceneInfo, const EVirtualShadowMapProjectionInputType InputType, FRDGTextureRef OutputScreenShadowMaskTexture)
bool	UsePackedShadowMaskBits () const
UE::Tasks::FTask	GetRendererSetupTask () const
bool	AreAnyLightsUsingMegaLightsVSM () const
bool	AreAnyLocalLightsPresent () const
bool	HasNaniteVisibilityQuery () const
UE::Renderer::Private::IShadowInvalidatingInstances *	GetInvalidatingInstancesInterface (const FSceneView *SceneView)
FVirtualShadowMapArray &	GetVirtualShadowMapArray ()
const FVirtualShadowMapArray &	GetVirtualShadowMapArray () const
Public Member Functions inherited from ISceneExtensionRenderer
	ISceneExtensionRenderer (FSceneRendererBase &InSceneRenderer)
virtual	~ISceneExtensionRenderer ()
virtual void	Begin (FSceneRendererBase *InRenderer)
virtual void	End ()
virtual void	UpdateViewData (FRDGBuilder &GraphBuilder, const FRendererViewDataManager &ViewDataManager)
virtual void	UpdateSceneUniformBuffer (FRDGBuilder &GraphBuilder, FSceneUniformBuffer &SceneUniforms)
virtual void	PreRender (FRDGBuilder &GraphBuilder)
virtual void	PostRender (FRDGBuilder &GraphBuilder)

Static Public Member Functions
static float	ComputeNaniteShadowsLODScaleFactor ()

Public Attributes
FRDGTextureRef	VirtualShadowMapMaskBits = nullptr
FRDGTextureRef	VirtualShadowMapMaskBitsHairStrands = nullptr
FRDGBufferRef	HairTransmittanceMaskBits = nullptr

Additional Inherited Members
Protected Member Functions inherited from ISceneExtensionRenderer
FSceneRendererBase &	GetSceneRenderer ()

Detailed Description

Transient scope for per-frame rendering resources for the shadow rendering.

Constructor & Destructor Documentation

FShadowSceneRenderer()

FShadowSceneRenderer::FShadowSceneRenderer	(	FDeferredShadingSceneRenderer &	InDeferredShadingSceneRenderer,
		FShadowScene &	InShadowScene
	)

Member Function Documentation

AddDirectionalLightShadow()

void FShadowSceneRenderer::AddDirectionalLightShadow	(	FLightSceneInfo &	LightSceneInfo,
		FViewInfo &	View,
		float	MaxNonFarCascadeDistance,
		TArray< FProjectedShadowInfo *, SceneRenderingAllocator > &	OutShadowInfosThatNeedCulling
	)

Add a directional light for processing this frame.

AddLocalLightShadow()

TSharedPtr< FVirtualShadowMapPerLightCacheEntry > FShadowSceneRenderer::AddLocalLightShadow	(	const FWholeSceneProjectedShadowInitializer &	Initializer,
		FProjectedShadowInfo *	ProjectedShadowInfo,
		FLightSceneInfo *	LightSceneInfo,
		float	MaxScreenRadius
	)

Add a cube/spot light for processing this frame. TODO: Don't use legacy FProjectedShadowInfo or other params, instead info should flow from persistent setup & update. TODO: Return reference to FLocalLightShadowFrameSetup ?

ApplyVirtualShadowMapProjectionForLight()

void FShadowSceneRenderer::ApplyVirtualShadowMapProjectionForLight	(	FRDGBuilder &	GraphBuilder,
		const FMinimalSceneTextures &	SceneTextures,
		const FLightSceneInfo *	LightSceneInfo,
		const EVirtualShadowMapProjectionInputType	InputType,
		FRDGTextureRef	OutputScreenShadowMaskTexture
	)

Renders virtual shadow map projection for a given light into the shadow mask. If one pass projection is enabled, this may be a simple composite from the shadow mask bits.

AreAnyLightsUsingMegaLightsVSM()

bool FShadowSceneRenderer::AreAnyLightsUsingMegaLightsVSM ( ) const

inline

AreAnyLocalLightsPresent()

bool FShadowSceneRenderer::AreAnyLocalLightsPresent ( ) const

inline

BeginMarkVirtualShadowMapPages()

void FShadowSceneRenderer::BeginMarkVirtualShadowMapPages	(	FRDGBuilder &	GraphBuilder,
		const FSingleLayerWaterPrePassResult *	SingleLayerWaterPrePassResult,
		const FFrontLayerTranslucencyData &	FrontLayerTranslucencyData,
		const Froxel::FRenderer &	FroxelRenderer
	)

ComputeNaniteShadowsLODScaleFactor()

float FShadowSceneRenderer::ComputeNaniteShadowsLODScaleFactor ( )

static

Multiply PackedView.LODScale by return value when rendering Nanite shadows.

DECLARE_SCENE_EXTENSION_RENDERER()

FShadowSceneRenderer::DECLARE_SCENE_EXTENSION_RENDERER	(	FShadowSceneRenderer	,
		FShadowScene
	)

DispatchVirtualShadowMapViewAndCullingSetup()

void FShadowSceneRenderer::DispatchVirtualShadowMapViewAndCullingSetup	(	FRDGBuilder &	GraphBuilder,
		TConstArrayView< FProjectedShadowInfo * >	VirtualShadowMapShadows
	)

Call to kick off culling tasks for VSMs & prepare views for rendering.

GatherClipmapIds()

TArray< int32, SceneRenderingAllocator > FShadowSceneRenderer::GatherClipmapIds

(

int32

ViewIndex

)

const

Get the clipmap IDs for the view (for all lights and features), which in case of stereo maps to the primary view internally.

GetInvalidatingInstancesInterface()

UE::Renderer::Private::IShadowInvalidatingInstances * FShadowSceneRenderer::GetInvalidatingInstancesInterface

(

const FSceneView *

SceneView

)

GetRendererSetupTask()

UE::Tasks::FTask FShadowSceneRenderer::GetRendererSetupTask ( ) const

inline

GetVirtualShadowMapArray() [1/2]

FVirtualShadowMapArray & FShadowSceneRenderer::GetVirtualShadowMapArray ( )

inline

GetVirtualShadowMapArray() [2/2]

const FVirtualShadowMapArray & FShadowSceneRenderer::GetVirtualShadowMapArray ( ) const

inline

HasNaniteVisibilityQuery()

bool FShadowSceneRenderer::HasNaniteVisibilityQuery ( ) const

inline

HasVirtualClipMap()

bool FShadowSceneRenderer::HasVirtualClipMap ( FLightSceneInfo::FPersistentId  LightId ) const

inline

returns true if the given light has a clipmap VSM set up for any view

HasVirtualShadowMap()

bool FShadowSceneRenderer::HasVirtualShadowMap ( FLightSceneInfo::FPersistentId  LightId ) const

inline

returns true if the given light has any VSM set up (for any view in the case of view dependent)

PostInitDynamicShadowsSetup()

void FShadowSceneRenderer::PostInitDynamicShadowsSetup

(

)

Call after view-dependent setup has been processed (InitView etc) but before any rendering activity has been kicked off.

PostSetupDebugRender()

void FShadowSceneRenderer::PostSetupDebugRender

(

)

PreInitViews()

void FShadowSceneRenderer::PreInitViews ( FRDGBuilder &  GraphBuilder )

overridevirtual

Called before BeginInitViews to allow creating tasks work that have dependencies in InitViews.

Reimplemented from ISceneExtensionRenderer.

RenderVirtualShadowMapProjection()

void FShadowSceneRenderer::RenderVirtualShadowMapProjection	(	FRDGBuilder &	GraphBuilder,
		const FMinimalSceneTextures &	SceneTextures,
		FLightSceneInfo::FPersistentId	LightId,
		const FViewInfo &	View,
		int32	ViewIndex,
		const FIntRect	ScissorRect,
		EVirtualShadowMapProjectionInputType	InputType,
		bool	bModulateRGB,
		FTiledVSMProjection *	TiledVSMProjection,
		FRDGTextureRef	OutputShadowMaskTexture
	)

RenderVirtualShadowMapProjectionMaskBits()

void FShadowSceneRenderer::RenderVirtualShadowMapProjectionMaskBits	(	FRDGBuilder &	GraphBuilder,
		FMinimalSceneTextures &	SceneTextures
	)

RenderVirtualShadowMaps()

void FShadowSceneRenderer::RenderVirtualShadowMaps	(	FRDGBuilder &	GraphBuilder,
		bool	bNaniteEnabled
	)

UsePackedShadowMaskBits()

bool FShadowSceneRenderer::UsePackedShadowMaskBits ( ) const

inline

Member Data Documentation

HairTransmittanceMaskBits

FRDGBufferRef FShadowSceneRenderer::HairTransmittanceMaskBits = nullptr

VirtualShadowMapMaskBits

FRDGTextureRef FShadowSceneRenderer::VirtualShadowMapMaskBits = nullptr

VirtualShadowMapMaskBitsHairStrands

FRDGTextureRef FShadowSceneRenderer::VirtualShadowMapMaskBitsHairStrands = nullptr

---

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

• Engine/Source/Runtime/Renderer/Private/Shadows/ShadowSceneRenderer.h
• Engine/Source/Runtime/Renderer/Private/Shadows/ShadowSceneRenderer.cpp