MegaLightsRayTracing.cpp File Reference

#include "MegaLights.h"
#include "MegaLightsInternal.h"
#include "Lumen/LumenTracingUtils.h"
#include "Lumen/LumenHardwareRayTracingCommon.h"
#include "VirtualShadowMaps/VirtualShadowMapArray.h"
#include "Nanite/NaniteRayTracing.h"
#include "BasePassRendering.h"

Classes
struct	MegaLights::FTraceStats
class	FCompactLightSampleTracesCS
class	FVolumeCompactLightSampleTracesCS
class	FInitCompactedTraceTexelIndirectArgsCS
class	FPrintTraceStatsCS
class	FSoftwareRayTraceLightSamplesCS
class	FVolumeSoftwareRayTraceLightSamplesCS
class	FScreenSpaceRayTraceLightSamplesCS
class	FVirtualShadowMapTraceLightSamplesCS
class	FVirtualShadowMapMarkLightSamplesCS

Namespaces
namespace	MegaLights

Enumerations
enum class	MegaLights::ECompactedTraceIndirectArgs { MegaLights::NumTracesDiv64 = 0 * sizeof(FRHIDispatchIndirectParameters) , MegaLights::NumTracesDiv32 = 1 * sizeof(FRHIDispatchIndirectParameters) , MegaLights::NumTraces = 2 * sizeof(FRHIDispatchIndirectParameters) , MegaLights::MAX = 3 }
enum class	MegaLights::EMaterialMode : uint8 { MegaLights::Disabled , MegaLights::AHS , MegaLights::RetraceAHS , MegaLights::MAX }

Functions
bool	MegaLights::IsSoftwareRayTracingSupported (const FSceneViewFamily &ViewFamily)
bool	MegaLights::IsHardwareRayTracingSupported (const FSceneViewFamily &ViewFamily)
bool	MegaLights::UseHardwareRayTracing (const FSceneViewFamily &ViewFamily)
bool	MegaLights::UseInlineHardwareRayTracing (const FSceneViewFamily &ViewFamily)
bool	MegaLights::UseFarField (const FSceneViewFamily &ViewFamily)
bool	MegaLights::UseScreenTraces (EMegaLightsInput InputType)
bool	MegaLights::UseHairScreenTraces (EMegaLightsInput InputType)
bool	MegaLights::IsUsingClosestHZB (const FSceneViewFamily &ViewFamily)
bool	MegaLights::IsUsingGlobalSDF (const FSceneViewFamily &ViewFamily)
bool	MegaLights::ShouldForceTwoSided ()
bool	MegaLights::UseDistantScreenTraces (const FViewInfo &View, bool bUseFarField)
FCompactedTraceParameters	MegaLights::CompactMegaLightsTraces (const FViewInfo &View, FRDGBuilder &GraphBuilder, const FIntPoint SampleBufferSize, FRDGTextureRef LightSamples, const FMegaLightsParameters &MegaLightsParameters, EMegaLightsInput InputType, bool bCompactForScreenSpaceTraces)
FCompactedTraceParameters	MegaLights::CompactMegaLightsVolumeTraces (const FViewInfo &View, FRDGBuilder &GraphBuilder, const FIntVector VolumeSampleBufferSize, FRDGTextureRef VolumeLightSampleRays, const FMegaLightsParameters &MegaLightsParameters, const FMegaLightsVolumeParameters &MegaLightsVolumeParameters)
EMaterialMode	MegaLights::GetMaterialMode ()
	IMPLEMENT_GLOBAL_SHADER (FCompactLightSampleTracesCS, "/Engine/Private/MegaLights/MegaLightsRayTracing.usf", "CompactLightSampleTracesCS", SF_Compute)
	IMPLEMENT_GLOBAL_SHADER (FVolumeCompactLightSampleTracesCS, "/Engine/Private/MegaLights/MegaLightsVolumeRayTracing.usf", "VolumeCompactLightSampleTracesCS", SF_Compute)
	IMPLEMENT_GLOBAL_SHADER (FInitCompactedTraceTexelIndirectArgsCS, "/Engine/Private/MegaLights/MegaLightsRayTracing.usf", "InitCompactedTraceTexelIndirectArgsCS", SF_Compute)
	IMPLEMENT_GLOBAL_SHADER (FPrintTraceStatsCS, "/Engine/Private/MegaLights/MegaLightsRayTracing.usf", "PrintTraceStatsCS", SF_Compute)
	IMPLEMENT_GLOBAL_SHADER (FSoftwareRayTraceLightSamplesCS, "/Engine/Private/MegaLights/MegaLightsRayTracing.usf", "SoftwareRayTraceLightSamplesCS", SF_Compute)
	IMPLEMENT_GLOBAL_SHADER (FVolumeSoftwareRayTraceLightSamplesCS, "/Engine/Private/MegaLights/MegaLightsVolumeRayTracing.usf", "VolumeSoftwareRayTraceLightSamplesCS", SF_Compute)
	IMPLEMENT_GLOBAL_SHADER (FScreenSpaceRayTraceLightSamplesCS, "/Engine/Private/MegaLights/MegaLightsRayTracing.usf", "ScreenSpaceRayTraceLightSamplesCS", SF_Compute)
	IMPLEMENT_GLOBAL_SHADER (FVirtualShadowMapTraceLightSamplesCS, "/Engine/Private/MegaLights/MegaLightsVSMTracing.usf", "VirtualShadowMapTraceLightSamplesCS", SF_Compute)
	IMPLEMENT_GLOBAL_SHADER (FVirtualShadowMapMarkLightSamplesCS, "/Engine/Private/MegaLights/MegaLightsVSMMarking.usf", "VirtualShadowMapMarkLightSamplesCS", SF_Compute)

Function Documentation

IMPLEMENT_GLOBAL_SHADER() [1/9]

IMPLEMENT_GLOBAL_SHADER	(	FCompactLightSampleTracesCS	,
		"/Engine/Private/MegaLights/MegaLightsRayTracing.usf"	,
		"CompactLightSampleTracesCS"	,
		SF_Compute
	)

IMPLEMENT_GLOBAL_SHADER() [2/9]

IMPLEMENT_GLOBAL_SHADER	(	FInitCompactedTraceTexelIndirectArgsCS	,
		"/Engine/Private/MegaLights/MegaLightsRayTracing.usf"	,
		"InitCompactedTraceTexelIndirectArgsCS"	,
		SF_Compute
	)

IMPLEMENT_GLOBAL_SHADER() [3/9]

IMPLEMENT_GLOBAL_SHADER	(	FPrintTraceStatsCS	,
		"/Engine/Private/MegaLights/MegaLightsRayTracing.usf"	,
		"PrintTraceStatsCS"	,
		SF_Compute
	)

IMPLEMENT_GLOBAL_SHADER() [4/9]

IMPLEMENT_GLOBAL_SHADER	(	FScreenSpaceRayTraceLightSamplesCS	,
		"/Engine/Private/MegaLights/MegaLightsRayTracing.usf"	,
		"ScreenSpaceRayTraceLightSamplesCS"	,
		SF_Compute
	)

IMPLEMENT_GLOBAL_SHADER() [5/9]

IMPLEMENT_GLOBAL_SHADER	(	FSoftwareRayTraceLightSamplesCS	,
		"/Engine/Private/MegaLights/MegaLightsRayTracing.usf"	,
		"SoftwareRayTraceLightSamplesCS"	,
		SF_Compute
	)

IMPLEMENT_GLOBAL_SHADER() [6/9]

IMPLEMENT_GLOBAL_SHADER	(	FVirtualShadowMapMarkLightSamplesCS	,
		"/Engine/Private/MegaLights/MegaLightsVSMMarking.usf"	,
		"VirtualShadowMapMarkLightSamplesCS"	,
		SF_Compute
	)

IMPLEMENT_GLOBAL_SHADER() [7/9]

IMPLEMENT_GLOBAL_SHADER	(	FVirtualShadowMapTraceLightSamplesCS	,
		"/Engine/Private/MegaLights/MegaLightsVSMTracing.usf"	,
		"VirtualShadowMapTraceLightSamplesCS"	,
		SF_Compute
	)

IMPLEMENT_GLOBAL_SHADER() [8/9]

IMPLEMENT_GLOBAL_SHADER	(	FVolumeCompactLightSampleTracesCS	,
		"/Engine/Private/MegaLights/MegaLightsVolumeRayTracing.usf"	,
		"VolumeCompactLightSampleTracesCS"	,
		SF_Compute
	)

IMPLEMENT_GLOBAL_SHADER() [9/9]

IMPLEMENT_GLOBAL_SHADER	(	FVolumeSoftwareRayTraceLightSamplesCS	,
		"/Engine/Private/MegaLights/MegaLightsVolumeRayTracing.usf"	,
		"VolumeSoftwareRayTraceLightSamplesCS"	,
		SF_Compute
	)