FIVSmokeCSMRenderer Class Reference

#include <IVSmokeCSMRenderer.h>

Collaboration diagram for FIVSmokeCSMRenderer:

Public Member Functions
void	Initialize (UWorld *World, int32 NumCascades, int32 Resolution, float MaxDistance)
void	Shutdown ()
bool	IsInitialized () const
void	Update (const FVector &CameraPosition, const FVector &CameraForward, const FVector &LightDirection, uint32 FrameNumber)
int32	GetNumCascades () const
const FIVSmokeCascadeData &	GetCascade (int32 Index) const
const TArray< FIVSmokeCascadeData > &	GetCascades () const
TArray< float >	GetSplitDistances () const
FTextureRHIRef	GetVSMTexture (int32 CascadeIndex) const
FTextureRHIRef	GetDepthTexture (int32 CascadeIndex) const
bool	HasValidShadowData () const
FVector	GetLightCameraPosition (int32 CascadeIndex) const
FVector	GetMainCameraPosition () const

Detailed Description

Cascaded Shadow Map renderer for volumetric smoke. Manages multiple shadow cascades with priority-based updates.

Features:

• Configurable cascade count (1-8)
• Log/Linear split distribution
• Texel snapping for shimmer prevention
• Priority-based update (near cascades update more frequently)
• VSM support for soft shadows

Definition at line 106 of file IVSmokeCSMRenderer.h.

Constructor & Destructor Documentation

FIVSmokeCSMRenderer()

FIVSmokeCSMRenderer::FIVSmokeCSMRenderer

(

)

Definition at line 15 of file IVSmokeCSMRenderer.cpp.

~FIVSmokeCSMRenderer()

FIVSmokeCSMRenderer::~FIVSmokeCSMRenderer

(

)

Definition at line 19 of file IVSmokeCSMRenderer.cpp.

Member Function Documentation

GetCascade()

const FIVSmokeCascadeData & FIVSmokeCSMRenderer::GetCascade ( int32  Index ) const

inline

Get cascade data by index.

Definition at line 158 of file IVSmokeCSMRenderer.h.

GetCascades()

const TArray< FIVSmokeCascadeData > & FIVSmokeCSMRenderer::GetCascades ( ) const

inline

Get all cascade data.

Definition at line 161 of file IVSmokeCSMRenderer.h.

GetDepthTexture()

FTextureRHIRef FIVSmokeCSMRenderer::GetDepthTexture

(

int32

CascadeIndex

)

const

Get depth texture for a cascade.

Definition at line 566 of file IVSmokeCSMRenderer.cpp.

GetLightCameraPosition()

FVector FIVSmokeCSMRenderer::GetLightCameraPosition

(

int32

CascadeIndex

)

const

Get light camera position for a cascade.

Parameters

CascadeIndex

Index of cascade.

Returns

Light camera world position for the specified cascade.

Definition at line 588 of file IVSmokeCSMRenderer.cpp.

GetMainCameraPosition()

FVector FIVSmokeCSMRenderer::GetMainCameraPosition ( ) const

inline

Get main camera position.

Definition at line 184 of file IVSmokeCSMRenderer.h.

GetNumCascades()

int32 FIVSmokeCSMRenderer::GetNumCascades ( ) const

inline

Get number of active cascades.

Definition at line 155 of file IVSmokeCSMRenderer.h.

GetSplitDistances()

TArray< float > FIVSmokeCSMRenderer::GetSplitDistances

(

)

const

Get cascade split distances (for shader).

Definition at line 542 of file IVSmokeCSMRenderer.cpp.

GetVSMTexture()

FTextureRHIRef FIVSmokeCSMRenderer::GetVSMTexture

(

int32

CascadeIndex

)

const

Get VSM texture for a cascade (nullptr if VSM disabled).

Definition at line 555 of file IVSmokeCSMRenderer.cpp.

HasValidShadowData()

bool FIVSmokeCSMRenderer::HasValidShadowData

(

)

const

Check if any cascade has valid shadow data.

Definition at line 577 of file IVSmokeCSMRenderer.cpp.

Initialize()

void FIVSmokeCSMRenderer::Initialize	(	UWorld *	World,
		int32	NumCascades,
		int32	Resolution,
		float	MaxDistance
	)

Initialize CSM renderer with specified settings. Creates cascade render targets and capture components.

Parameters

World	World to create capture components in.
NumCascades	Number of shadow cascades (1-8).
Resolution	Shadow map resolution per cascade.
MaxDistance	Maximum shadow distance in world units.

Definition at line 27 of file IVSmokeCSMRenderer.cpp.

IsInitialized()

bool FIVSmokeCSMRenderer::IsInitialized ( ) const

inline

Check if renderer is initialized.

Definition at line 130 of file IVSmokeCSMRenderer.h.

Shutdown()

void FIVSmokeCSMRenderer::Shutdown

(

)

Release all resources.

Definition at line 99 of file IVSmokeCSMRenderer.cpp.

Update()

void FIVSmokeCSMRenderer::Update	(	const FVector &	CameraPosition,
		const FVector &	CameraForward,
		const FVector &	LightDirection,
		uint32	FrameNumber
	)

Update shadow cascades for current frame. Calculates cascade splits, applies texel snapping, and triggers captures.

Parameters

CameraPosition	Current camera world position.
CameraForward	Camera forward direction.
LightDirection	Direction TOWARD the light source (opposite of light travel).
FrameNumber	Current frame number for priority update.

Definition at line 136 of file IVSmokeCSMRenderer.cpp.

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

• plugins/UE5.7/IVSmoke/Source/IVSmoke/Public/IVSmokeCSMRenderer.h
• plugins/UE5.7/IVSmoke/Source/IVSmoke/Private/IVSmokeCSMRenderer.cpp