UMaterialExpressionNoise | Unreal Engine 5.7 Documentation

API > API/Runtime > API/Runtime/Engine


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

Syntax

UCLASS (MinimalAPI)  
class UMaterialExpressionNoise : public UMaterialExpression

Inheritance Hierarchy

UObjectBase → UObjectBaseUtility → UObject → UMaterialExpression → UMaterialExpressionNoise

Constructors

Name	Remarks	Include Path	Unreal Specifiers
UMaterialExpressionNoise ( const FObjectInitializer& ObjectInitializer )		Materials/MaterialExpressionNoise.h

Variables

Public

Name	Type	Remarks	Include Path	Unreal Specifiers
bTiling	uint32	Whether to use tiling noise pattern, useful for baking to seam-free repeating textures	Materials/MaterialExpressionNoise.h	EditAnywhere Category=MaterialExpressionNoise
bTurbulence	uint32	How multiple frequencies are getting combined	Materials/MaterialExpressionNoise.h	EditAnywhere Category=MaterialExpressionNoise
FilterWidth	FExpressionInput	Scalar, to clamp the Levels at pixel level, can be computed like this: max(length(ddx(Position)), length(ddy(Position))	Materials/MaterialExpressionNoise.h
Levels	int32	1 = fast but little detail, .. larger numbers cost more performance	Materials/MaterialExpressionNoise.h	EditAnywhere Category=MaterialExpressionNoise Meta=(UIMin="1", UIMax="10")
LevelScale	float	Usually 2 but higher values allow efficient use of few levels	Materials/MaterialExpressionNoise.h	EditAnywhere Category=MaterialExpressionNoise Meta=(UIMin="2", UIMax="8")
NoiseFunction	TEnumAsByte< enum ENoiseFunction >	Noise function, affects performance and look	Materials/MaterialExpressionNoise.h	EditAnywhere Category=MaterialExpressionNoise Meta=(DisplayName="Function")
OutputMax	float		Materials/MaterialExpressionNoise.h	EditAnywhere Category=MaterialExpressionNoise
OutputMin	float		Materials/MaterialExpressionNoise.h	EditAnywhere Category=MaterialExpressionNoise
Position	FExpressionInput	3 dimensional vector	Materials/MaterialExpressionNoise.h
Quality	int32	Lower numbers are faster and lower quality, higher numbers are slower and higher quality	Materials/MaterialExpressionNoise.h	EditAnywhere Category=MaterialExpressionNoise Meta=(UIMin="1", UIMax="4")
RepeatSize	uint32	How many units in each tile (if Tiling is on)	Materials/MaterialExpressionNoise.h	EditAnywhere Category=MaterialExpressionNoise Meta=(UIMin="4")
Scale	float	Can also be done with a multiply on the Position	Materials/MaterialExpressionNoise.h	EditAnywhere Category=MaterialExpressionNoise
WorldPositionOriginType	EPositionOrigin	Defines the reference space for the Position input.	Materials/MaterialExpressionNoise.h	EditAnywhere Category=MaterialExpressionNoise

Functions

Public

Overridden from UMaterialExpression

Name	Remarks	Include Path
virtual void Build ( MIR::FEmitter& Emitter )	Builds this expression's material IR.	Materials/MaterialExpressionNoise.h
virtual int32 Compile ( FMaterialCompiler* Compiler, int32 OutputIndex )	Create the new shader code chunk needed for the Abs expression	Materials/MaterialExpressionNoise.h
virtual void GetCaption ( TArray< FString >& OutCaptions ) const	Returns the text to display on the material expression (in the material editor).	Materials/MaterialExpressionNoise.h
virtual FName GetInputName ( int32 InputIndex ) const		Materials/MaterialExpressionNoise.h

Overridden from UObject

Name	Remarks	Include Path	Unreal Specifiers
virtual bool CanEditChange ( const FProperty* InProperty ) const		Materials/MaterialExpressionNoise.h
virtual void PostEditChangeProperty ( FPropertyChangedEvent& PropertyChangedEvent )		Materials/MaterialExpressionNoise.h

Navigation

Syntax

Inheritance Hierarchy

Constructors

Variables

Public

Functions

Public

Overridden from UMaterialExpression

Overridden from UObject