UMaterialExpressionNoise | Unreal Engine 4.27 Documentation

Inheritance Hierarchy


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

class UMaterialExpressionNoise : public UMaterialExpression

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

	Type	Name	Description
		UMaterialExpressionNoise ( const FObjectInitializer& ObjectInitializer )

Type	Name	Description
int32	Compile ( FMaterialCompiler* Compiler, int32 OutputIndex )	Create the new shader code chunk needed for the Abs expression
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).