1. Epic GamesDeveloper
  3. UMaterialExpressionNoise

UMaterialExpressionNoise

API > API/Runtime > API/Runtime/Engine > API/Runtime/Engine/Materials

Inheritance Hierarchy

References

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

Syntax

UCLASS (MinimalAPI)  
class UMaterialExpressionNoise : public UMaterialExpression

Variables

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

Constructors

  Type Name Description
Public function  

UMaterialExpressionNoise ( const FObjectInitializer& ObjectInitializer
)

  

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 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 Const FName

GetInputName ( int32 InputIndex
)

  

Overridden from UObject

  Type Name Description
Public function Virtual Const bool

CanEditChange ( const FProperty* InProperty
)

 Called by the editor to query whether a property of this object is allowed to be modified.
Public function Virtual void

PostEditChangeProperty ( FPropertyChangedEvent& PropertyChangedEvent
)

 Called when a property on this object has been modified externally

Ask questions and help your peers Developer Forums

Write your own tutorials or read those from others Learning Library

On this page