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  3. UMaterialExpressionLayerStack

UMaterialExpressionLayerStack

API > API/Runtime > API/Runtime/Engine

   
Name UMaterialExpressionLayerStack
Type class
Header File /Engine/Source/Runtime/Engine/Public/Materials/MaterialExpressionLayerStack.h
Include Path #include "Materials/MaterialExpressionLayerStack.h"

Syntax

UCLASS (HideCategories=Object, MinimalAPI, Experimental)  
class UMaterialExpressionLayerStack : public UMaterialExpressionMaterialAttributeLayers

Inheritance Hierarchy

Constructors

Name Remarks Include Path Unreal Specifiers

UMaterialExpressionLayerStack ( const FObjectInitializer& ObjectInitializer
)

   Materials/MaterialExpressionLayerStack.h  

Structs

Name Remarks
FValidLayerUsageTracker This struct is to circumvent having to extend the below lambda in future if we want to validate against additional node types.

Variables

Public

Name Type Remarks Include Path Unreal Specifiers
AvailableBlends TSet< TObjectPtr< UMaterialFunctionInterface > >   Materials/MaterialExpressionLayerStack.h
  • EditAnywhere
  • Category=AvailableFunctions
  • Meta=(AllowedClasses="/Script/Engine.MaterialFunctionMaterialLayerBlend, /Script/Engine.MaterialFunctionMaterialLayerBlendInstance")
AvailableLayers TSet< TObjectPtr< UMaterialFunctionInterface > >   Materials/MaterialExpressionLayerStack.h
  • EditAnywhere
  • Category=AvailableFunctions
  • Meta=(DisallowedClasses="/Script/Engine.MaterialFunctionMaterialLayerBlend, /Script/Engine.MaterialFunctionMaterialLayerBlendInstance")
LayerInputs TArray< FMaterialLayerInput >   Materials/MaterialExpressionLayerStack.h  

Protected

Name Type Remarks Include Path Unreal Specifiers
bAreAvailableLayersValid bool   Materials/MaterialExpressionLayerStack.h  
SharedCache TSharedPtr< FMaterialLayerStackFunctionsCache >   Materials/MaterialExpressionLayerStack.h  

Functions

Public

Name Remarks Include Path Unreal Specifiers

void CacheLayerInputs()

   Materials/MaterialExpressionLayerStack.h  

TArray< FSoftObjectPath > GetAvailableBlendPaths()

   Materials/MaterialExpressionLayerStack.h  

TArray< FSoftObjectPath > GetAvailableLayerPaths()

   Materials/MaterialExpressionLayerStack.h  

TSharedPtr< FMaterialLayerStackFunctionsCache > GetSharedAvailableFunctionsCache()

   Materials/MaterialExpressionLayerStack.h  

void ResolveLayerInputs()

   Materials/MaterialExpressionLayerStack.h  

Overridden from UMaterialExpressionMaterialAttributeLayers

Name Remarks Include Path Unreal Specifiers

virtual void RebuildLayerGraph ( bool bReportErrors
)

   Materials/MaterialExpressionLayerStack.h  

virtual bool ValidateLayerConfiguration ( FMaterialCompiler* Compiler,
bool bReportErrors
)

   Materials/MaterialExpressionLayerStack.h  

Overridden from UMaterialExpression

Name Remarks Include Path Unreal Specifiers

virtual void GetCaption ( TArray< FString >& OutCaptions
) const

 Returns the text to display on the material expression (in the material editor). Materials/MaterialExpressionLayerStack.h  

virtual void GetExpressionToolTip ( TArray< FString >& OutToolTip
)

 Get a tooltip for the expression itself. Materials/MaterialExpressionLayerStack.h  

virtual FExpressionInput * GetInput ( int32 InputIndex
)

 Returns the input at index InputIndex if valid, nullptr otherwise. Materials/MaterialExpressionLayerStack.h  

virtual FName GetInputName ( int32 InputIndex
) const

   Materials/MaterialExpressionLayerStack.h  

virtual TArrayView< FExpressionInput * > GetInputsView()

   Materials/MaterialExpressionLayerStack.h  

virtual EMaterialValueType GetInputValueType ( int32 InputIndex
)

   Materials/MaterialExpressionLayerStack.h  

Overridden from UObject

Name Remarks Include Path Unreal Specifiers

virtual void PostEditChangeProperty ( FPropertyChangedEvent& PropertyChangedEvent
)

   Materials/MaterialExpressionLayerStack.h  

virtual void PostLoad()

   Materials/MaterialExpressionLayerStack.h  

virtual void PreSave ( FObjectPreSaveContext ObjectSaveContext
)

   Materials/MaterialExpressionLayerStack.h  

Static

Name Remarks Include Path Unreal Specifiers

static UMaterialFunctionInterface * ExtractParentFunctionFromInstance ( FMaterialCompiler* Compiler,
UMaterialFunctionInterface* CurrentFunction
)

   Materials/MaterialExpressionLayerStack.h  

static TArray< FSoftObjectPath > GetPathsFromAvailableFunctions ( TSet< TObjectPtr< UMaterialFunctionInterface > >& InFunctions
)

   Materials/MaterialExpressionLayerStack.h  

static bool PollFunctionExpressionsForLayerUsage ( FMaterialCompiler* Compiler,
UMaterialFunctionInterface* CurrentFunction,
FValidLayerUsageTracker& Tracker,
bool bCheckStatics
)

   Materials/MaterialExpressionLayerStack.h  

static bool ValidateFunctionForBlendUsage ( FMaterialCompiler* Compiler,
UMaterialFunctionInterface* CurrentFunction,
bool bCheckStatics
)

   Materials/MaterialExpressionLayerStack.h  

static bool ValidateFunctionForLayerUsage ( FMaterialCompiler* Compiler,
UMaterialFunctionInterface* CurrentFunction,
bool bCheckStatics
)

   Materials/MaterialExpressionLayerStack.h  

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