FParticleSimulationResources Class Reference

Public Member Functions
void	Init ()
void	Resize (FRHICommandListImmediate &RHICmdList)
void	Release ()
void	Destroy ()
FParticleStateTextures &	GetCurrentStateTextures ()
FParticleStateTextures &	GetPreviousStateTextures ()
FParticleStateTextures &	GetVisualizeStateTextures ()
void	Update (FRHICommandListImmediate &RHICmdList)
uint32	AllocateTile ()
void	FreeTile (uint32 Tile)
int32	GetFreeTileCount () const
int32	GetAllocatedTileCount () const
bool	SupportTileResizing () const

Public Attributes
FParticleStateTextures	StateTextures [2]
FParticleAttributesTexture	RenderAttributesTexture
FParticleAttributesTexture	SimulationAttributesTexture
int32	FrameIndex = 0
FVector3f	LWCTile = FVector3f::ZeroVector
FIntPoint	SimulationResourcesSize = FIntPoint::ZeroValue
uint32	ParticleSimulationTileCountX = 0
uint32	ParticleSimulationTileCountY = 0
uint32	ParticleSimulationTileCount = 0

Detailed Description

Resources required for GPU particle simulation.

Member Function Documentation

AllocateTile()

uint32 FParticleSimulationResources::AllocateTile ( )

inline

Allocate a particle tile.

Destroy()

void FParticleSimulationResources::Destroy ( )

inline

Destroy resources.

FreeTile()

void FParticleSimulationResources::FreeTile ( uint32  Tile )

inline

Free a particle tile.

GetAllocatedTileCount()

int32 FParticleSimulationResources::GetAllocatedTileCount ( ) const

inline

Returns the number of allocated tiles.

GetCurrentStateTextures()

FParticleStateTextures & FParticleSimulationResources::GetCurrentStateTextures ( )

inline

Retrieve texture resources with up-to-date particle state.

GetFreeTileCount()

int32 FParticleSimulationResources::GetFreeTileCount ( ) const

inline

Returns the number of free tiles.

GetPreviousStateTextures()

FParticleStateTextures & FParticleSimulationResources::GetPreviousStateTextures ( )

inline

Retrieve texture resources with previous particle state.

GetVisualizeStateTextures()

FParticleStateTextures & FParticleSimulationResources::GetVisualizeStateTextures ( )

inline

Init()

void FParticleSimulationResources::Init ( )

inline

Initialize resources.

How many tiles are in the simulation textures.

Release()

void FParticleSimulationResources::Release ( )

inline

Release resources.

Resize()

void FParticleSimulationResources::Resize ( FRHICommandListImmediate &  RHICmdList )

inline

Resize gpu simaluation resources.

SupportTileResizing()

bool FParticleSimulationResources::SupportTileResizing ( ) const

inline

Support resizing tile allocator

Update()

void FParticleSimulationResources::Update ( FRHICommandListImmediate &  RHICmdList )

inline

Update when AdvanceGPUParticleFrame is called .

Member Data Documentation

FrameIndex

int32 FParticleSimulationResources::FrameIndex = 0

Frame index used to track double buffered resources on the GPU.

LWCTile

FVector3f FParticleSimulationResources::LWCTile = FVector3f::ZeroVector

LWC tile offset, will be 0,0,0 for localspace emitters.

ParticleSimulationTileCount

uint32 FParticleSimulationResources::ParticleSimulationTileCount = 0

ParticleSimulationTileCountX

uint32 FParticleSimulationResources::ParticleSimulationTileCountX = 0

ParticleSimulationTileCountY

uint32 FParticleSimulationResources::ParticleSimulationTileCountY = 0

RenderAttributesTexture

FParticleAttributesTexture FParticleSimulationResources::RenderAttributesTexture

Texture holding render attributes.

SimulationAttributesTexture

FParticleAttributesTexture FParticleSimulationResources::SimulationAttributesTexture

Texture holding simulation attributes.

SimulationResourcesSize

FIntPoint FParticleSimulationResources::SimulationResourcesSize = FIntPoint::ZeroValue

StateTextures

FParticleStateTextures FParticleSimulationResources::StateTextures[2]

Textures needed for simulation, double buffered.

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

• Engine/Source/Runtime/Engine/Private/Particles/ParticleGpuSimulation.cpp