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> Unreal Engine API Reference > Runtime > Engine > Materials > UMaterialExpressionMaterialAttributeLayers

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UMaterialExpressionMaterialAttributeLayers

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Inheritance Hierarchy

UObjectBase

UObjectBaseUtility

UObject

UMaterialExpression

UMaterialExpressionMaterialAttributeLayers

References

Module	Engine
Header	/Engine/Source/Runtime/Engine/Classes/Materials/MaterialExpressionMaterialAttributeLayers.h
Include	#include "Materials/MaterialExpressionMaterialAttributeLayers.h"

Syntax

class UMaterialExpressionMaterialAttributeLayers : public UMaterialExpression

Variables

	Name	Description
bool	bIsLayerGraphBuilt
TArray< UMateri...	BlendCallers
FMaterialLayers...	DefaultLayers
FGuid	ExpressionGUID	GUID that should be unique within the material, this is used for parameter renaming.
FMaterialAttrib...	Input
TArray< UMateri...	LayerCallers
int32	NumActiveBlendCallers
int32	NumActiveLayerCallers
FName	ParameterName	Name to be referenced when we want to find and set this parameter

Constructors

	Name	Description
	UMaterialExpressionMaterialAttributeLayers ( const FObjectInitializer& ObjectIn... )

Functions

	Name	Description
void	GetAllParameterInfo ( TArray< FMaterialParameterInfo >& ..., TArray< FGuid >& OutParameterIds, const FMaterialParameterInfo& InBa... )
const TArray...	GetBlends()
void	GetDependentFunctions ( TArray< UMaterialFunctionInterface ... )
const TArray...	GetLayerGuids()
const TArray...	GetLayerNames()
const TArray...	GetLayers()
const TArray...	GetLayerStates()
UMaterialFun...	GetParameterAssociatedFunction ( const FHashedMaterialParameterInfo ... )
const TArray...	GetShouldFilterBlends()
const TArray...	GetShouldFilterLayers()
bool	IsNamedParameter ( const FHashedMaterialParameterInfo ..., FMaterialLayersFunctions& OutLayer..., FGuid& OutExpressionGuid )	Return whether this is the named parameter, and fill in its value
bool	IterateDependentFunctions ( TFunctionRef< bool... )
void	OverrideLayerGraph ( const FMaterialLayersFunctions*... )
void	RebuildLayerGraph ( bool bReportErrors )
bool	ValidateLayerConfiguration ( FMaterialCompiler* Compiler, bool bReportErrors )

Overridden from UMaterialExpression

	Name	Description
bool	CanRenameNode()	Can this node be renamed?
int32	Compile ( FMaterialCompiler* Compiler, int32 OutputIndex )	Create the new shader code chunk needed for the Abs expression
void	GetCaption ( TArray< FString >& OutCaptions )	Returns the text to display on the material expression (in the material editor).
FString	GetEditableName()	Returns the current 'name' of the node (typically a parameter name).
void	GetExpressionToolTip ( TArray< FString >& OutToolTip )	Get a tooltip for the expression itself.
FExpressionI...	GetInput ( int32 InputIndex )
FName	GetInputName ( int32 InputIndex )
const TArray...	GetInputs()
uint32	GetInputType ( int32 InputIndex )
FGuid &	GetParameterExpressionId()	Callback to access derived classes' parameter expression id.
FName	GetParameterName()
bool	HasAParameterName()	Parameter Name functions, this is requires as multiple class have ParameterName but are not UMaterialExpressionParameter due to class hierarchy.
bool	IsInputConnectionRequired ( int32 InputIndex )
bool	IsResultMaterialAttributes ( int32 OutputIndex )	Marks certain expression types as outputting material attributes.
bool	MatchesSearchQuery ( const TCHAR* SearchQuery )	MatchesSearchQuery: Check this expression to see if it matches the search query
void	SetEditableName ( const FString& NewName )	Sets the current 'name' of the node (typically a parameter name) Only valid to call on a node that previously returned CanRenameNode() = true.
void	SetParameterName ( const FName& Name )

Overridden from UObject

		Name	Description
	void	PostEditChangeProperty ( FPropertyChangedEvent& PropertyCha... )	Called when a property on this object has been modified externally
	void	PostLoad()	Do any object-specific cleanup required immediately after loading an object.

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