Particle Material

ParticleTranslucentMaterial01

Detailed information of the Omnisurface material can be found here.

Material Parameters

The particle tool comes with a default material that you can use with your particles.

Material Inputs

ParticleTranslucentMaterialInput01

This group carries your input information such as opacity and color parameters.

Inputs

Description

Opacity

Controls the overall fractional opacity of the texture.

Color

Set color R, G, B.
Left Click color field for Color picker

Texture

Toggle: If enabled, allows texture loading in the Bitmap parameters -> Bitmap File field

Vertex Color

Toggle: Controls whether vertex color is enabled or disabled.
Enable this if you want to change colors or over time in the particle system.

Vertex Alpha

Toggle: Controls whether vertex color alpha channel is enabled or disabled.
Enable this if you want to change opacity or over time in the particle system.

You can use the color picker in the color picker parameter by clicking the color field.

ParticleMaterialColorPick1

Material Bitmap Parameters

ParticleTranslucentMaterialTexture01

This group carries your bitmap (texture) information. You can load textures and change texture and brightness here.

Bitmap Parameters

Description

Brightness

Change color brightness. This is an additive function.

Contrast

Change color contrast. This is a power function.

Invert image

Toggle: Invert Image.

Scalar mode

Dropdown: Defines how the texture applies to scalar parameters.
mono_alpha
mono_average
mono_luminance
mono_maximum

Bitmap file

Select your texture in this field using the file browse button.
You can also locate files if you have a path in the field.

Bitmap File Color Space

auto
raw
sRGB

Color texture brightness

Change color brightness. This is an additive function.

Color texture contrast

Change color contrast. This is a power function.

Material Placement

ParticleMaterialPlacement01

This group controls the particle’s UVs.

Placement

Description

Clip

Toggle: Clamp UVs from 0 to 1.
If enabled tiling past 0 to 1 does not occur.

Rotation

Rotation angle of the texture in degrees.

Tiling

Controls the scale of the texture on the object.

UV Space Index

The UV channel to pick for texture sampling.

Offset

Controls position of the texture on the object.

Mateiral Base

ParticleMaterialBase01

This group controls base diffuse texture parameters.

Base

Description

Weight

Base weight

Color

Set color R, G, B.
Left Click color field for Color picker.

Diffuse Roughness

Higher roughness values lead a powdery appearance.

Metalness

Higher values lead to a more metalic appearance.

Material Specular

ParticleMaterialSpecular01

This group controls the amount of Specular to apply to the material.

Specular

Description

Weight

Specular weight

Color

Set specular color R, G, B.
Left Click color field for Color picker.

Roughness

Higher roughness values lead to softer specular highlights.

IOR Preset

Dropdown: Index of refraction presets
ior_custom
ior_plastic
ior_sapphire
ior_soap_bubble
ior_vacuum
ior_water_0c
ior_water_35c
ior_water_100c

IOR

This parameter sets Index of refraction, which affects surface Fresnel reflectivity

Anisotrophy

This parameter sets the specular reflection anisotropy.

Rotation(radian)

this parameter sets the orientation of the anisotropic effect in radians.

Material Transmission

ParticleMaterialTransmission01

Transmission allows light to travel through thin objects.

Transmission

Description

Enable Transmission

Enable or disable transmission in the material

Weight

Transmission weight

Color

Set transmission color R, G, B.
Left Click color field for Color picker.

Depth

This parameter sets the distance traveled by refracted white rays before their colors turned into the transmission color.

Scatter

This parameter sets the scattering coefficient (sigma_s) of the interior medium to the object.
The scattering color describes how much “refracted rays” are scattered while traveling inside the medium.

Scatter Anisotrophy

Values above 0.0 biases the scattering effect forward in the direction of the light, while values below 0.0 biases the scattering effect backward in the opposite direction of the light.

Dispersion ABBE

This parameter sets how much the index of refraction varies across wavelengths.
Lowering the abbe number increases the effect of dispersion.
When thin-walled enabled, dispersion has no effects.

Material Subsurface

ParticleMaterialSubsurface01

Subsurface supports light entering and scattering through an object and supports non thin objects. What are the RT and PT limitations (edited)

Subsurface

Description

Enable Subsurface

Enable or disable subsurface scattering in the material

Weight

Subsurface weight

Scattering presets

Dropdown: select a subsurface scattering presets
scattering_colors_custom
scattering_colors_potato
scattering_colors_skim_milk
scattering_colors_whole_milk
scattering_colors_skin_1
scattering_colors_skin_2
scattering_colors_skin_3
scattering_colors_skin_4

Color

Set subsurface color R, G, B.
Left Click color field for Color picker.

Radius (mfp)

Set Radius of Subsurface Scattering.

Scale

This parameter scales the effect of scattering radius or the mean free path distance.

Anisotrophy

Values above 0.0 biases the scattering effect forward in the direction of the light, while values below 0.0 biases the scattering effect backward in the opposite direction of the light.

Material Coat

Note

This is not used in the particle system

Material Sheen

ParticleMaterialSheen01

Sheen simulates surface micro-fibers, with axes oriented parallel to the surface normal, creating specular highlights at grazing angles.

Sheen can create soft backscattering materials like fine powder, dust, satin, leaf, and peach fuzz on the skin

Sheen

Description

Weight

Sheen weight

Color

Set sheen color R, G, B.
Left Click color field for Color picker.

Roughness

Higher roughness values lead to sharper specular highlights.

Material Emission

ParticleMaterialEmission01

This group enables and sets an emissive color and Intensity

Emission

Description

Weight

Emission weight

Emission Mode

Dropdown: set emission mode
emission_lx
emission_nt

Intensity

Emission intensity multiplier

Color

Set emissive color R, G, B.
Left Click color field for Color picker.

Use Temperature

toggle: When enabled, use temperature instead of assigned color

Temperature (kelvin)

Temperature value in kelvin

Material Thin Film

ParticleMaterialthinFilm01

This layer models a reflective thin film when a metal and or specular reflection layer presents.

Thin Film

Description

Enable Thin Film

Toggle: Enable or disable thin film in the material

Thickness (mm)

Film thickness in milimeters.

IOR Preset

Dropdown: Index of refraction presets
ior_custom
ior_plastic
ior_sapphire
ior_soap_bubble
ior_vacuum
ior_water_0c
ior_water_35c
ior_water_100c

IOR

Index of refraction

Material Geometry

ParticleMaterialGeo01

This group enables and sets geometry parameters.

Geometry

Description

Thin Walled

Toggle: Enable or disable thin walled in the material

Enable Opacity

Toggle: Enable or disable opacity on geometry

Opacity

Opacity value

Opacity Threshold

Opacity threshold value.

Displacement

amount of geometry displacement in x, y, z.