ENoiseFunction

Windows
MacOS
Linux

References

Module

Engine

Header

/Engine/Source/Runtime/Engine/Classes/Materials/MaterialExpressionNoise.h

Include

#include "Materials/MaterialExpressionNoise.h"

Syntax

enum ENoiseFunction
{
    NOISEFUNCTION_SimplexTex,
    NOISEFUNCTION_GradientTex,
    NOISEFUNCTION_GradientTex3D,
    NOISEFUNCTION_GradientALU,
    NOISEFUNCTION_ValueALU,
    NOISEFUNCTION_VoronoiALU,
    NOISEFUNCTION_MAX,
}

Values

Name

Description

NOISEFUNCTION_SimplexTex

High quality for direct use and bumps ~77 instructions per level, 4 texture lookups Cannot tile

NOISEFUNCTION_GradientTex

High quality for direct use and bumps Non-tiled: ~61 instructions per level, 8 texture lookups Tiling: ~74 instructions per level, 8 texture lookups Even "non-tiled" mode has a repeat of 128.

NOISEFUNCTION_GradientTex3D

High quality for direct use, BAD for bumps; doesn't work on Mobile ~16 instructions per level, 1 texture lookup Always tiles with a repeat of 16, "Tiling" mode is not an option for Fast Gradient noise

NOISEFUNCTION_GradientALU

High quality for direct use and bumps Non-tiled: ~80 instructions per level, no textures Tiling: ~143 instructions per level, no textures

NOISEFUNCTION_ValueALU

Low quality, but pure computation Non-tiled: ~53 instructions per level, no textures Tiling: ~118 instructions per level, no textures Formerly mis-labeled as Gradient noise

NOISEFUNCTION_VoronoiALU

Also known as Worley or Cellular noise Quality=1 searches 8 cells, Quality=2 searches 16 cells Quality=3 searches 27 cells, Quality=4 searches 32 cells All are about 20 instructions per cell searched

NOISEFUNCTION_MAX

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