Parameters (New for v3.4)

The Parameters sub-section can be used to define the direction of the hair, setting the base color strength, the reflection and SSS effects on the hair.

Basic Settings

  • Tangent Vector Color: If you do not load any customized Hair Tangent Map, then the system uses this color to determine the direction of the entire hair texture.
  • Flip Tangent Map Y: This checkbox can be used to swap the primary and secondary specularity position on the hair.

    Flip Tangent Map Y = Off

    Flip Tangent Map Y = On

  • AO map occlude all lighting: Instead of merely occluding the IBL effect, AO map can be used to occlude all lights in the project by activating this checkbox.
  • Diffuse Strength: Use this slider to set the strength of the Base Color texture without actually changing the original image.

    Diffuse Strength = 0.800

    Diffuse Strength = 2.000

  • Hair Roughness Map Strength: This value set the roughness strength of the hair.

    Hair Roughness Map Strength = 0.555

    Hair Roughness Map Strength = 0.777

  • Hair Specular Map Strength: This setting adjusts the overall strength of the Specular Map.

    Hair Specular Map Strength = 1.000

    Hair Specular Map Strength = 0.300

  • Specular Strength:

    Specular Strength = 1.000

    Specular Strength = 1.500

  • Indirect Specular Strength

    Indirect Specular Strength = 0.000

    Indirect Specular Strength = 2.000

  • Transmission Strength: This value defines how much light is to pass through a hair.

    Transmission Strength = 1.000

    Transmission Strength = 1.500

  • Lit Back Face: This setting keeps the details of the dark areas of the hair in PBR shader.

    Darkness in PBR shader


    Lit Back Face = 0.000

    (Digital Human Hair Shader)

    Lit Back Face = 1.000

    (Digital Human Hair Shader)