FStreamingTextureLevelContext Class Reference

#include <TextureStreamingTypes.h>

Public Member Functions
ENGINE_API	FStreamingTextureLevelContext (EMaterialQualityLevel::Type InQualityLevel, const ULevel *InLevel=nullptr, const TMap< FGuid, int32 > *InTextureGuidToLevelIndex=nullptr)
ENGINE_API	FStreamingTextureLevelContext (EMaterialQualityLevel::Type InQualityLevel, ERHIFeatureLevel::Type InFeatureLevel, bool InUseRelativeBoxes)
ENGINE_API	FStreamingTextureLevelContext (EMaterialQualityLevel::Type InQualityLevel, const UPrimitiveComponent *Primitive)
ENGINE_API	~FStreamingTextureLevelContext ()
void	SetForceNoUseBuiltData (bool bValue)
ENGINE_API void	UpdateContext (EMaterialQualityLevel::Type InQualityLevel, const ULevel *InLevel, const TMap< FGuid, int32 > *InTextureGuidToLevelIndex)
ENGINE_API void	BindBuildData (const TArray< FStreamingTextureBuildInfo > *PreBuiltData)
ENGINE_API void	ProcessMaterial (const FBoxSphereBounds &ComponentBounds, const FPrimitiveMaterialInfo &MaterialData, float ComponentScaling, TArray< FStreamingRenderAssetPrimitiveInfo > &OutStreamingTextures, bool bIsComponentBuildDataValid=false, const UPrimitiveComponent *DebugComponent=nullptr)
ENGINE_API bool	CanUseTextureStreamingBuiltData () const
EMaterialQualityLevel::Type	GetQualityLevel ()
ERHIFeatureLevel::Type	GetFeatureLevel ()

Detailed Description

Context used to resolve FStreamingTextureBuildInfo to FStreamingRenderAssetPrimitiveInfo The context make sure that build data and each texture is only processed once per component (with constant time). It manage internally structures used to accelerate the binding between precomputed data and textures, so that there is only one map lookup per texture per level. There is some complexity here because the build data does not reference directly texture objects to avoid hard references which would load texture when the component is loaded, which could be wrong since the build data is built for a specific feature level and quality level. The current feature and quality could reference more or less textures. This requires the logic to not submit a streaming entry for precomputed data, as well as submit fallback data for texture that were referenced in the texture streaming build.

Constructor & Destructor Documentation

FStreamingTextureLevelContext() [1/3]

FStreamingTextureLevelContext::FStreamingTextureLevelContext	(	EMaterialQualityLevel::Type	InQualityLevel,
		const ULevel *	InLevel = nullptr,
		const TMap< FGuid, int32 > *	InTextureGuidToLevelIndex = nullptr
	)

FStreamingTextureLevelContext() [2/3]

FStreamingTextureLevelContext::FStreamingTextureLevelContext	(	EMaterialQualityLevel::Type	InQualityLevel,
		ERHIFeatureLevel::Type	InFeatureLevel,
		bool	InUseRelativeBoxes
	)

FStreamingTextureLevelContext() [3/3]

FStreamingTextureLevelContext::FStreamingTextureLevelContext	(	EMaterialQualityLevel::Type	InQualityLevel,
		const UPrimitiveComponent *	Primitive
	)

~FStreamingTextureLevelContext()

FStreamingTextureLevelContext::~FStreamingTextureLevelContext

(

)

Member Function Documentation

BindBuildData()

void FStreamingTextureLevelContext::BindBuildData

(

const TArray< FStreamingTextureBuildInfo > *

PreBuiltData

)

CanUseTextureStreamingBuiltData()

bool FStreamingTextureLevelContext::CanUseTextureStreamingBuiltData

(

)

const

GetFeatureLevel()

ERHIFeatureLevel::Type FStreamingTextureLevelContext::GetFeatureLevel ( )

inline

GetQualityLevel()

EMaterialQualityLevel::Type FStreamingTextureLevelContext::GetQualityLevel ( )

inline

ProcessMaterial()

void FStreamingTextureLevelContext::ProcessMaterial	(	const FBoxSphereBounds &	ComponentBounds,
		const FPrimitiveMaterialInfo &	MaterialData,
		float	ComponentScaling,
		TArray< FStreamingRenderAssetPrimitiveInfo > &	OutStreamingTextures,
		bool	bIsComponentBuildDataValid = false,
		const UPrimitiveComponent *	DebugComponent = nullptr
	)

SetForceNoUseBuiltData()

void FStreamingTextureLevelContext::SetForceNoUseBuiltData ( bool  bValue )

inline

UpdateContext()

void FStreamingTextureLevelContext::UpdateContext	(	EMaterialQualityLevel::Type	InQualityLevel,
		const ULevel *	InLevel,
		const TMap< FGuid, int32 > *	InTextureGuidToLevelIndex
	)

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

• Engine/Source/Runtime/Engine/Classes/Engine/TextureStreamingTypes.h
• Engine/Source/Runtime/Engine/Private/Streaming/TextureStreamingBuild.cpp