#include "NaniteShared.h"
#include "RHI.h"
#include "RenderUtils.h"
#include "SceneUtils.h"
#include "ScenePrivate.h"
#include "Rendering/NaniteStreamingManager.h"
#include "SceneRelativeViewMatrices.h"
#include "UnrealEngine.h"

Namespaces
namespace	Nanite

Macros
#define	MAX_CLUSTERS (16 * 1024 * 1024)

Functions
	DEFINE_LOG_CATEGORY (LogNanite)

	DEFINE_GPU_STAT (NaniteDebug)

	IMPLEMENT_STATIC_UNIFORM_BUFFER_SLOT (NaniteRaster)

	IMPLEMENT_STATIC_UNIFORM_BUFFER_STRUCT (FNaniteRasterUniformParameters, "NaniteRaster", NaniteRaster)

	IMPLEMENT_STATIC_UNIFORM_BUFFER_SLOT (NaniteShading)

	IMPLEMENT_STATIC_UNIFORM_BUFFER_STRUCT (FNaniteShadingUniformParameters, "NaniteShading", NaniteShading)

	IMPLEMENT_STATIC_UNIFORM_BUFFER_SLOT (NaniteRayTracing)

	IMPLEMENT_STATIC_AND_SHADER_UNIFORM_BUFFER_STRUCT (FNaniteRayTracingUniformParameters, "NaniteRayTracing", NaniteRayTracing)

void	Nanite::SetCullingViewOverrides (FViewInfo const *InCullingView, Nanite::FPackedViewParams &InOutParams)

FPackedView	Nanite::CreatePackedView (const FPackedViewParams &Params)

FPackedViewParams	Nanite::CreateViewParamsFromViewInfo (const FViewInfo &View, FIntPoint RasterContextSize, uint32 Flags, uint32 StreamingPriorityCategory, float MinBoundsRadius, float MaxPixelsPerEdgeMultipler, const FIntRect *InHZBTestViewRect)

FPackedView	Nanite::CreatePackedViewFromViewInfo (const FViewInfo &View, FIntPoint RasterContextSize, uint32 Flags, uint32 StreamingPriorityCategory, float MinBoundsRadius, float MaxPixelsPerEdgeMultipler, const FIntRect *InHZBTestViewRect, bool bUseCurrentPreTranslationForHZB)

bool	Nanite::ShouldDrawSceneViewsInOneNanitePass (const FViewInfo &View)

bool	ShouldRenderNanite (const FScene *Scene, const FViewInfo &View, bool bCheckForAtomicSupport)

bool	WouldRenderNanite (const FScene *Scene, const FViewInfo &View, bool bCheckForAtomicSupport, bool bCheckForProjectSetting)

bool	UseComputeDepthExport ()

Variables
TAutoConsoleVariable< float >	CVarNaniteMaxPixelsPerEdge

TAutoConsoleVariable< float >	CVarNaniteMinPixelsPerEdgeHW

int32	GNaniteExportDepth = 1

int32	GNaniteMaxNodes = 2 * 1048576

FAutoConsoleVariableRef	CVarNaniteMaxNodes (TEXT("r.Nanite.MaxNodes"), GNaniteMaxNodes, TEXT("Maximum number of Nanite nodes traversed during a culling pass."), ECVF_RenderThreadSafe)

int32	GNaniteMaxCandidateClusters = 16 * 1048576

FAutoConsoleVariableRef	CVarNaniteMaxCandidateClusters (TEXT("r.Nanite.MaxCandidateClusters"), GNaniteMaxCandidateClusters, TEXT("Maximum number of Nanite clusters before cluster culling."), ECVF_RenderThreadSafe)

int32	GNaniteMaxVisibleClusters = 4 * 1048576

FAutoConsoleVariableRef	CVarNaniteMaxVisibleClusters (TEXT("r.Nanite.MaxVisibleClusters"), GNaniteMaxVisibleClusters, TEXT("Maximum number of visible Nanite clusters."), ECVF_RenderThreadSafe)

int32	GNaniteMaxCandidatePatches = 2 * 1048576

FAutoConsoleVariableRef	CVarNaniteMaxCandidatePatches (TEXT("r.Nanite.MaxCandidatePatches"), GNaniteMaxCandidatePatches, TEXT("Maximum number of Nanite patches considered for splitting."), ECVF_RenderThreadSafe)

int32	GNaniteMaxVisiblePatches = 2 * 1048576

FAutoConsoleVariableRef	CVarNaniteMaxVisiblePatches (TEXT("r.Nanite.MaxVisiblePatches"), GNaniteMaxVisiblePatches, TEXT("Maximum number of visible Nanite patches."), ECVF_RenderThreadSafe)

int32	GNaniteMaxVisibleAssemblyParts = 256 * 1024

FAutoConsoleVariableRef	CVarNaniteMaxVisibleAssemblyParts (TEXT("r.Nanite.MaxVisibleAssemblyParts"), GNaniteMaxVisibleAssemblyParts, TEXT("Maximum number of visible Nanite assembly parts."), ECVF_RenderThreadSafe)

TGlobalResource< FGlobalResources >	Nanite::GGlobalResources

Macro Definition Documentation

◆ MAX_CLUSTERS

#define MAX_CLUSTERS (16 * 1024 * 1024)

Function Documentation

◆ DEFINE_GPU_STAT()

DEFINE_GPU_STAT ( NaniteDebug )

◆ DEFINE_LOG_CATEGORY()

DEFINE_LOG_CATEGORY ( LogNanite )

◆ IMPLEMENT_STATIC_AND_SHADER_UNIFORM_BUFFER_STRUCT()

IMPLEMENT_STATIC_AND_SHADER_UNIFORM_BUFFER_STRUCT	(	FNaniteRayTracingUniformParameters	,
		"NaniteRayTracing"	,
		NaniteRayTracing
	)

◆ IMPLEMENT_STATIC_UNIFORM_BUFFER_SLOT() [1/3]

IMPLEMENT_STATIC_UNIFORM_BUFFER_SLOT ( NaniteRaster )

◆ IMPLEMENT_STATIC_UNIFORM_BUFFER_SLOT() [2/3]

IMPLEMENT_STATIC_UNIFORM_BUFFER_SLOT ( NaniteRayTracing )

◆ IMPLEMENT_STATIC_UNIFORM_BUFFER_SLOT() [3/3]

IMPLEMENT_STATIC_UNIFORM_BUFFER_SLOT ( NaniteShading )

◆ IMPLEMENT_STATIC_UNIFORM_BUFFER_STRUCT() [1/2]

IMPLEMENT_STATIC_UNIFORM_BUFFER_STRUCT	(	FNaniteRasterUniformParameters	,
		"NaniteRaster"	,
		NaniteRaster
	)

◆ IMPLEMENT_STATIC_UNIFORM_BUFFER_STRUCT() [2/2]

IMPLEMENT_STATIC_UNIFORM_BUFFER_STRUCT	(	FNaniteShadingUniformParameters	,
		"NaniteShading"	,
		NaniteShading
	)

◆ ShouldRenderNanite()

bool ShouldRenderNanite	(	const FScene *	Scene,
		const FViewInfo &	View,
		bool	bCheckForAtomicSupport
	)

◆ UseComputeDepthExport()

bool UseComputeDepthExport ( )

◆ WouldRenderNanite()

bool WouldRenderNanite	(	const FScene *	Scene,
		const FViewInfo &	View,
		bool	bCheckForAtomicSupport = `true`,
		bool	bCheckForProjectSetting = `true`
	)

Checks whether Nanite would be rendered in this view. Used to give a visual warning about the project settings that can disable Nanite.

Variable Documentation

◆ CVarNaniteMaxCandidateClusters

FAutoConsoleVariableRef CVarNaniteMaxCandidateClusters(TEXT("r.Nanite.MaxCandidateClusters"), GNaniteMaxCandidateClusters, TEXT("Maximum number of Nanite clusters before cluster culling."), ECVF_RenderThreadSafe)	(	TEXT("r.Nanite.MaxCandidateClusters")	,
		GNaniteMaxCandidateClusters	,
		TEXT("Maximum number of Nanite clusters before cluster culling.")	,
		ECVF_RenderThreadSafe
	)

◆ CVarNaniteMaxCandidatePatches

FAutoConsoleVariableRef CVarNaniteMaxCandidatePatches(TEXT("r.Nanite.MaxCandidatePatches"), GNaniteMaxCandidatePatches, TEXT("Maximum number of Nanite patches considered for splitting."), ECVF_RenderThreadSafe)	(	TEXT("r.Nanite.MaxCandidatePatches")	,
		GNaniteMaxCandidatePatches	,
		TEXT("Maximum number of Nanite patches considered for splitting.")	,
		ECVF_RenderThreadSafe
	)

◆ CVarNaniteMaxNodes

FAutoConsoleVariableRef CVarNaniteMaxNodes(TEXT("r.Nanite.MaxNodes"), GNaniteMaxNodes, TEXT("Maximum number of Nanite nodes traversed during a culling pass."), ECVF_RenderThreadSafe)	(	TEXT("r.Nanite.MaxNodes")	,
		GNaniteMaxNodes	,
		TEXT("Maximum number of Nanite nodes traversed during a culling pass.")	,
		ECVF_RenderThreadSafe
	)

◆ CVarNaniteMaxPixelsPerEdge

TAutoConsoleVariable<float> CVarNaniteMaxPixelsPerEdge

extern

◆ CVarNaniteMaxVisibleAssemblyParts

FAutoConsoleVariableRef CVarNaniteMaxVisibleAssemblyParts(TEXT("r.Nanite.MaxVisibleAssemblyParts"), GNaniteMaxVisibleAssemblyParts, TEXT("Maximum number of visible Nanite assembly parts."), ECVF_RenderThreadSafe)	(	TEXT("r.Nanite.MaxVisibleAssemblyParts")	,
		GNaniteMaxVisibleAssemblyParts	,
		TEXT("Maximum number of visible Nanite assembly parts.")	,
		ECVF_RenderThreadSafe
	)

◆ CVarNaniteMaxVisibleClusters

FAutoConsoleVariableRef CVarNaniteMaxVisibleClusters(TEXT("r.Nanite.MaxVisibleClusters"), GNaniteMaxVisibleClusters, TEXT("Maximum number of visible Nanite clusters."), ECVF_RenderThreadSafe)	(	TEXT("r.Nanite.MaxVisibleClusters")	,
		GNaniteMaxVisibleClusters	,
		TEXT("Maximum number of visible Nanite clusters.")	,
		ECVF_RenderThreadSafe
	)

◆ CVarNaniteMaxVisiblePatches

FAutoConsoleVariableRef CVarNaniteMaxVisiblePatches(TEXT("r.Nanite.MaxVisiblePatches"), GNaniteMaxVisiblePatches, TEXT("Maximum number of visible Nanite patches."), ECVF_RenderThreadSafe)	(	TEXT("r.Nanite.MaxVisiblePatches")	,
		GNaniteMaxVisiblePatches	,
		TEXT("Maximum number of visible Nanite patches.")	,
		ECVF_RenderThreadSafe
	)

◆ CVarNaniteMinPixelsPerEdgeHW

TAutoConsoleVariable<float> CVarNaniteMinPixelsPerEdgeHW

extern

◆ GNaniteExportDepth

int32 GNaniteExportDepth = 1

◆ GNaniteMaxCandidateClusters

int32 GNaniteMaxCandidateClusters = 16 * 1048576

◆ GNaniteMaxCandidatePatches

int32 GNaniteMaxCandidatePatches = 2 * 1048576

◆ GNaniteMaxNodes

int32 GNaniteMaxNodes = 2 * 1048576

◆ GNaniteMaxVisibleAssemblyParts

int32 GNaniteMaxVisibleAssemblyParts = 256 * 1024

◆ GNaniteMaxVisibleClusters

int32 GNaniteMaxVisibleClusters = 4 * 1048576

◆ GNaniteMaxVisiblePatches

int32 GNaniteMaxVisiblePatches = 2 * 1048576

Namespaces

Macros

Functions

Variables