#include "ParticleEmitterInstances.h"
#include "EngineModule.h"
#include "PrimitiveSceneProxy.h"
#include "Materials/Material.h"
#include "Materials/MaterialRenderProxy.h"
#include "Particles/Orientation/ParticleModuleOrientationAxisLock.h"
#include "PrimitiveSceneProxyDesc.h"
#include "SceneView.h"
#include "UObject/UObjectIterator.h"
#include "MaterialDomain.h"
#include "MaterialShared.h"
#include "MeshParticleVertexFactory.h"
#include "Particles/ParticleEmitter.h"
#include "Particles/ParticleModule.h"
#include "StaticMeshResources.h"
#include "ParticleResources.h"
#include "ParticleSystemSceneProxy.h"
#include "Particles/ParticlePerfStats.h"
#include "Particles/TypeData/ParticleModuleTypeDataBeam2.h"
#include "Particles/ParticleSpriteEmitter.h"
#include "Particles/TypeData/ParticleModuleTypeDataMesh.h"
#include "Particles/ParticleSystem.h"
#include "Particles/TypeData/ParticleModuleTypeDataRibbon.h"
#include "Particles/ParticleModuleRequired.h"
#include "ParticleBeamTrailVertexFactory.h"
#include "SceneInterface.h"
#include "Particles/ParticleLODLevel.h"
#include "Engine/StaticMesh.h"
#include "Stats/StatsTrace.h"
#include "UnrealEngine.h"
#include "RenderCore.h"
#include "DataDrivenShaderPlatformInfo.h"
#include "PrimitiveUniformShaderParametersBuilder.h"
#include "Experimental/ConcurrentLinearAllocator.h"
#include "Templates/Greater.h"
#include "InGamePerformanceTracker.h"

Classes
class	FDynamicSpriteCollectorResources

class	FDynamicMeshEmitterCollectorResources

class	FMeshParticleInstanceVertices

class	FDynamicBeamTrailCollectorResources

struct	FAnimTrailParticleRenderData

Functions
	DECLARE_CYCLE_STAT (TEXT("DynamicSpriteEmitterData GetDynamicMeshElementsEmitter GetParticleOrderData RT"), STAT_FDynamicSpriteEmitterData_GetDynamicMeshElementsEmitter_GetParticleOrderData, STATGROUP_Particles)

	DECLARE_CYCLE_STAT (TEXT("DynamicSpriteEmitterData PerParticleWorkOrTasks RT"), STAT_FDynamicSpriteEmitterData_PerParticleWorkOrTasks, STATGROUP_Particles)

	DECLARE_CYCLE_STAT (TEXT("DynamicSpriteEmitterData GetDynamicMeshElementsEmitter Task RT"), STAT_FDynamicSpriteEmitterData_GetDynamicMeshElementsEmitter_Task, STATGROUP_Particles)

void	ComputeLockedAxes (EParticleAxisLock LockAxisFlag, const FMatrix &LocalToWorld, FVector &CameraUp, FVector &CameraRight)

FORCEINLINE FVector	GetCameraOffset (float CameraPayloadOffset, FVector DirToCamera)

FORCEINLINE FVector	GetCameraOffsetFromPayload (int32 InCameraPayloadOffset, const FBaseParticle &InParticle, const FVector &InParticlePosition, const FVector &InCameraPosition)

FVector2D	GetParticleSize (const FBaseParticle &Particle, const FDynamicSpriteEmitterReplayDataBase &Source)

void	ApplyOrbitToPosition (const FBaseParticle &Particle, const FDynamicSpriteEmitterReplayDataBase &Source, const FMatrix &InLocalToWorld, FVector &ParticlePosition, FVector &ParticleOldPosition)

void	GatherParticleLightData (const FDynamicSpriteEmitterReplayDataBase &Source, const FMatrix &InLocalToWorld, const FSceneViewFamily &InViewFamily, FSimpleLightArray &OutParticleLights)

void	InitMeshParticleVertexFactoryComponents (FMeshParticleVertexFactory *InVertexFactory, const FStaticMeshLODResources &LODResources, FMeshParticleVertexFactory::FDataType &Data)

FParticleBeamTrailUniformBufferRef	CreateBeamTrailUniformBuffer (const FParticleSystemSceneProxy Proxy, const FDynamicSpriteEmitterReplayDataBase SourceData, const FSceneView *View)

Variables
float	GTimeBetweenParticleRenderStatCaptures = 5.0f

float	GMinParticleDrawTimeToTrack = .0001f

float	GCatmullRomEndParamOffset = 0.1f

Function Documentation

◆ ApplyOrbitToPosition()

void ApplyOrbitToPosition	(	const FBaseParticle &	Particle,
		const FDynamicSpriteEmitterReplayDataBase &	Source,
		const FMatrix &	InLocalToWorld,
		FVector &	ParticlePosition,
		FVector &	ParticleOldPosition
	)

◆ ComputeLockedAxes()

void ComputeLockedAxes	(	EParticleAxisLock	LockAxisFlag,
		const FMatrix &	LocalToWorld,
		FVector &	CameraUp,
		FVector &	CameraRight
	)

Retrieve the appropriate camera Up and Right vectors for LockAxis situations

Parameters

LockAxisFlag	The lock axis flag to compute camera vectors for.
LocalToWorld	The local-to-world transform for the emitter (identify unless the emitter is rendering in local space).
CameraUp	OUTPUT - the resulting camera Up vector
CameraRight	OUTPUT - the resulting camera Right vector

◆ CreateBeamTrailUniformBuffer()

FParticleBeamTrailUniformBufferRef CreateBeamTrailUniformBuffer	(	const FParticleSystemSceneProxy *	Proxy,
		const FDynamicSpriteEmitterReplayDataBase *	SourceData,
		const FSceneView *	View
	)

◆ DECLARE_CYCLE_STAT() [1/3]

DECLARE_CYCLE_STAT	(	TEXT("DynamicSpriteEmitterData GetDynamicMeshElementsEmitter GetParticleOrderData RT")	,
		STAT_FDynamicSpriteEmitterData_GetDynamicMeshElementsEmitter_GetParticleOrderData	,
		STATGROUP_Particles
	)

◆ DECLARE_CYCLE_STAT() [2/3]

DECLARE_CYCLE_STAT	(	TEXT("DynamicSpriteEmitterData GetDynamicMeshElementsEmitter Task RT")	,
		STAT_FDynamicSpriteEmitterData_GetDynamicMeshElementsEmitter_Task	,
		STATGROUP_Particles
	)

◆ DECLARE_CYCLE_STAT() [3/3]

DECLARE_CYCLE_STAT	(	TEXT("DynamicSpriteEmitterData PerParticleWorkOrTasks RT")	,
		STAT_FDynamicSpriteEmitterData_PerParticleWorkOrTasks	,
		STATGROUP_Particles
	)

◆ GatherParticleLightData()

void GatherParticleLightData	(	const FDynamicSpriteEmitterReplayDataBase &	Source,
		const FMatrix &	InLocalToWorld,
		const FSceneViewFamily &	InViewFamily,
		FSimpleLightArray &	OutParticleLights
	)

◆ GetCameraOffset()

FORCEINLINE FVector GetCameraOffset	(	float	CameraPayloadOffset,
		FVector	DirToCamera
	)

◆ GetCameraOffsetFromPayload()

FORCEINLINE FVector GetCameraOffsetFromPayload	(	int32	InCameraPayloadOffset,
		const FBaseParticle &	InParticle,
		const FVector &	InParticlePosition,
		const FVector &	InCameraPosition
	)

Helper function for retrieving the camera offset payload of a particle.

Parameters

InCameraPayloadOffset	The offset to the camera offset payload data.
InParticle	The particle being processed.
InPosition	The position of the particle being processed.
InCameraPosition	The position of the camera in local space.

Returns: the offset to apply to the particle's position.

◆ GetParticleSize()

FVector2D GetParticleSize	(	const FBaseParticle &	Particle,
		const FDynamicSpriteEmitterReplayDataBase &	Source
	)

◆ InitMeshParticleVertexFactoryComponents()

void InitMeshParticleVertexFactoryComponents	(	FMeshParticleVertexFactory *	InVertexFactory,
		const FStaticMeshLODResources &	LODResources,
		FMeshParticleVertexFactory::FDataType &	Data
	)

Variable Documentation

◆ GCatmullRomEndParamOffset

float GCatmullRomEndParamOffset = 0.1f

◆ GMinParticleDrawTimeToTrack

float GMinParticleDrawTimeToTrack = .0001f

Minimum render time for a single DrawDynamicElements call that should be recorded.

◆ GTimeBetweenParticleRenderStatCaptures

float GTimeBetweenParticleRenderStatCaptures = 5.0f

Seconds between stat captures.

Classes

Functions

Variables