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> Unreal Engine API Reference > Runtime > Engine > Materials > UMaterialFunctionInstance

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UMaterialFunctionInstance

A material function instance defines parameter overrides for a parent material function.

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Inheritance Hierarchy

UObjectBase

UObjectBaseUtility

UObject

UMaterialFunctionInterface

UMaterialFunctionInstance

	UMaterialFunctionMaterialLayerBlendInstance
	UMaterialFunctionMaterialLayerInstance

References

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

Syntax

class UMaterialFunctionInstance : public UMaterialFunctionInterface

Remarks

A material function instance defines parameter overrides for a parent material function.

Variables

	Name	Description
UMaterialFuncti...	Base	Base function.
TArray< struct ...	FontParameterValues	Font parameters.
UMaterialFuncti...	Parent	Parent function.
UMaterialInstan...	PreviewMaterial
TArray< struct ...	RuntimeVirtualTextureParameterValues	Runtime virtual texture parameters.
TArray< struct ...	ScalarParameterValues	Scalar parameters.
TArray< struct ...	StaticComponentMaskParameterValues	Static component mask parameters.
TArray< struct ...	StaticSwitchParameterValues	Static switch parameters.
TArray< struct ...	TextureParameterValues	Texture parameters.
TArray< struct ...	VectorParameterValues	Vector parameters.

Constructors

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

Functions

		Name	Description
	void	OverrideMaterialInstanceParameterValues ( UMaterialInstance* Instance )
	void	SetParent ( UMaterialFunctionInterface* Ne... )
	void	UpdateParameterSet()

Overridden from UMaterialFunctionInterface

	Name	Description
int32	Compile ( FMaterialCompiler* Compiler, const FFunctionExpressionOutput& O... )
UMaterialFun...	GetBaseFunction()
const UMater...	GetBaseFunction()
void	GetDependentFunctions ( TArray< UMaterialFunctionInterface ... )	Returns an array of the functions that this function is dependent on, directly or indirectly.
const FStrin...	GetDescription()
const TArray...	GetFunctionExpressions()
void	GetInputsAndOutputs ( TArray< struct FFunctionExpressionI..., TArray< struct FFunctionExpressionO... )
EMaterialFun...	GetMaterialFunctionUsage()
UMaterialInt...	GetPreviewMaterial()
bool	GetReentrantFlag()
bool	HasFlippedCoordinates()	Checks whether a Material Function is arranged in the old style, with inputs flowing from right to left
bool	IsDependent ( UMaterialFunctionInterface* Ot... )
bool	IterateDependentFunctions ( TFunctionRef< bool... )	Iterates all functions that this function is dependent on, directly or indrectly.
void	LinkIntoCaller ( const TArray< FFunctionExpressionIn... )
bool	OverrideNamedFontParameter ( const FHashedMaterialParameterInfo ..., UFont*& OutFontValue, int32& OutFontPage )
bool	OverrideNamedRuntimeVirtualTextureParameter ( const FHashedMaterialParameterInfo ..., URuntimeVirtualTexture*& OutVa... )
bool	OverrideNamedScalarParameter ( const FHashedMaterialParameterInfo ..., float& OutValue )
bool	OverrideNamedStaticComponentMaskParameter ( const FHashedMaterialParameterInfo ..., bool& OutR, bool& OutG, bool& OutB, bool& OutA, FGuid& OutExpressionGuid )
bool	OverrideNamedStaticSwitchParameter ( const FHashedMaterialParameterInfo ..., bool& OutValue, FGuid& OutExpressionGuid )
bool	OverrideNamedTextureParameter ( const FHashedMaterialParameterInfo ..., UTexture*& OutValue )
bool	OverrideNamedVectorParameter ( const FHashedMaterialParameterInfo ..., FLinearColor& OutValue )
void	SetReentrantFlag ( const bool bIsReentrant )
void	UnlinkFromCaller()
void	UpdateFromFunctionResource()
void	UpdateInputOutputTypes()
bool	ValidateFunctionUsage ( FMaterialCompiler* Compiler, const FFunctionExpressionOutput& O... )

Overridden from UObject

		Name	Description
	void	PostLoad()	Do any object-specific cleanup required immediately after loading an object.

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