unreal.NoiseFunction

class unreal.NoiseFunction

Bases: EnumBase

ENoise Function

C++ Source:

  • Module: Engine

  • File: MaterialExpressionNoise.h

NOISEFUNCTION_GRADIENT_ALU: NoiseFunction

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

Type:

3

NOISEFUNCTION_GRADIENT_TEX: NoiseFunction

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. Useful Repeat Size range <= 128 Formerly labeled as Perlin noise

Type:

1

NOISEFUNCTION_GRADIENT_TEX3D: NoiseFunction

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

Type:

2

NOISEFUNCTION_SIMPLEX_TEX: NoiseFunction

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

Type:

0

NOISEFUNCTION_VALUE_ALU: NoiseFunction

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

Type:

4

NOISEFUNCTION_VORONOI_ALU: NoiseFunction

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

Type:

5