UMaterialExpressionFunctionOutput | Unreal Engine 4.27 Documentation

Inheritance Hierarchy


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

class UMaterialExpressionFunctionOutput : public UMaterialExpression

Type	Name	Description
FExpressionInput	A	Stores the expression in the material function connected to this output.
uint32: 1	bLastPreviewed	Whether this output was previewed the last time this function was edited.
FString	Description	The output's description, which will be used as a tooltip on the connector in function call expressions that use this function.
FGuid	Id	Id of this input, used to maintain references through name changes.
FName	OutputName	The output's name, which will be drawn on the connector in function call expressions that use this function.
int32	SortPriority	Controls where the output is displayed relative to the other outputs.

	Type	Name	Description
		UMaterialExpressionFunctionOutput ( const FObjectInitializer& ObjectInitializer )

	Type	Name	Description
	void	ConditionallyGenerateId ( bool bForce )	Generate the Id for this input.
	void	ValidateName ()	Validate OutputName. Must be called after OutputName is changed to prevent duplicate outputs.

Type	Name	Description
int32	Compile ( FMaterialCompiler* Compiler, int32 OutputIndex )	Create the new shader code chunk needed for the Abs expression
int32	CompilePreview ( FMaterialCompiler* Compiler, int32 OutputIndex )
void	GatherStrataMaterialInfo ( FStrataMaterialInfo& StrataMaterialInfo, int32 OutputIndex )	Recursively parse nodes outputing strata material in order to gather all the possible shading models used in a material graph output a Strata material.
bool	GenerateHLSLExpression ( FMaterialHLSLGenerator& Generator, UE::HLSLTree::FScope& Scope, int32 OutputIndex, UE::HLSLTree::FExpression const*& OutExpression )
void	GetCaption ( TArray< FString >& OutCaptions )	Returns the text to display on the material expression (in the material editor).
void	GetExpressionToolTip ( TArray< FString >& OutToolTip )	Get a tooltip for the expression itself.
FName	GetInputName ( int32 InputIndex )
uint32	GetInputType ( int32 InputIndex )
bool	IsResultMaterialAttributes ( int32 OutputIndex )	Marks certain expression types as outputting material attributes.
bool	IsResultStrataMaterial ( int32 OutputIndex )	Marks certain expression types as outputting Strata material.
FStrataOperator *	StrataGenerateMaterialTopologyTree ( FMaterialCompiler* Compiler, UMaterialExpression* Parent, int32 OutputIndex )	A starta material is a tree with FrontMateiral being its root and BSDF being leaves, with operators in the middle.

Type	Name	Description
void	PostDuplicate ( bool bDuplicateForPIE )	Called after duplication & serialization and before PostLoad.
void	PostEditChangeProperty ( FPropertyChangedEvent& PropertyChangedEvent )	Called when a property on this object has been modified externally
void	PostEditImport ()	Called after importing property values for this object (paste, duplicate or .t3d import) Allow the object to perform any cleanup for properties which shouldn't be duplicated or are unsupported by the script serialization
void	PostLoad ()	Do any object-specific cleanup required immediately after loading an object.
void	PreEditChange ( FProperty* PropertyAboutToChange )	This is called when a property is about to be modified externally