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  3. UMaterialExpressionMaterialFunctionCall

UMaterialExpressionMaterialFunctionCall

Unreal Engine C++ API Reference > Runtime > Engine > Materials

Inheritance Hierarchy

References

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

Syntax

class UMaterialExpressionMaterialFunctionCall : public UMaterialExpression

Variables

  Type Name Description
Public variable TArray< struct FFunctionExpressionInput > FunctionInputs Array of all the function inputs that this function exposes.
Public variable TArray< struct FFunctionExpressionOutput > FunctionOutputs Array of all the function outputs that this function exposes.
Public variable FMaterialParameterInfo FunctionParameterInfo Used by material parameters to split references to separate instances.
Public variable TObjectPtr< class UMaterialFunctionInterface > MaterialFunction The function to call.

Constructors

  Type Name Description
Public function    

Functions

  Type Name Description
Public function Const void  
Public function Const FName

GetInputNameWithType ( int32 InputIndex,
bool bWithType
)

 Util to get name of a particular type, optionally with type appended in parenthesis
Public function Const bool  
Public function void  
Public function bool  
Public function bool Set a new material function, given an old function so that links can be passed over if the name matches.
Public function void Temporary compilation state shared between function calls
Public function void  
Public function void

UpdateFromFunctionResource ( bool bRecreateAndLinkNode
)

 Update FunctionInputs and FunctionOutputs from the MaterialFunction.

Overridden from UMaterialExpression

  Type Name Description
Public function Virtual int32

Compile ( FMaterialCompiler* Compiler,
int32 OutputIndex
)

 Create the new shader code chunk needed for the Abs expression
Public function Virtual 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.
Public function Virtual Const bool

GenerateHLSLExpression ( FMaterialHLSLGenerator& Generator,
UE::HLSLTree::FScope& Scope,
int32 OutputIndex,
UE::HLSLTree::FExpression const*& OutExpression
)

  
Public function Virtual Const void

GetCaption ( TArray< FString >& OutCaptions
)

 Returns the text to display on the material expression (in the material editor).
Public function Virtual void

GetConnectorToolTip ( int32 InputIndex,
int32 OutputIndex,
TArray< FString >& OutToolTip
)

 Get a tooltip for the specified connector.
Public function Virtual Const FString Get a single line description of the material expression (used for lists)
Public function Virtual void

GetExpressionToolTip ( TArray< FString >& OutToolTip
)

 Get a tooltip for the expression itself.
Public function Virtual FExpressionInput *

GetInput ( int32 InputIndex
)

  
Public function Virtual Const FName

GetInputName ( int32 InputIndex
)

  
Public function Virtual TArrayView< FExpressionInput * > Get the expression inputs supported by this expression (Note: property inputs NOT included).
Public function Virtual uint32

GetInputType ( int32 InputIndex
)

  
Public function Virtual Const bool

IsInputConnectionRequired ( int32 InputIndex
)

  
Public function Virtual bool

IsResultMaterialAttributes ( int32 OutputIndex
)

 Marks certain expression types as outputting material attributes.
Public function Virtual bool

IsResultStrataMaterial ( int32 OutputIndex
)

 Marks certain expression types as outputting Strata material.
Public function Virtual bool

MatchesSearchQuery ( const TCHAR* SearchQuery
)

 MatchesSearchQuery: Check this expression to see if it matches the search query
Public function Virtual FStrataOperator * A starta material is a tree with FrontMateiral being its root and BSDF being leaves, with operators in the middle.

Overridden from UObject

  Type Name Description
Public function Virtual void

PostEditChangeProperty ( FPropertyChangedEvent& PropertyChangedEvent
)

 Called when a property on this object has been modified externally
Public function Virtual void Do any object-specific cleanup required immediately after loading an object.
Public function Virtual void

PreEditChange ( FProperty* PropertyAboutToChange
)

 This is called when a property is about to be modified externally

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