Hair Fiber#
(MaterialPhysicalHairFiber)
- Category:
/Material/Physical - Default object name:
hair_fiber
Description#
Physically-based shader for hair and fur fibers.
Attributes#
| Name | Type | Description |
|---|---|---|
| Export Aovs | bool |
Compute and write Aovs defined in the shading graph |
| Arbitrary Output Variables | reference (AovStore) |
Set the list of extra channels to write to the image. |
| Light Path Expression Label | string |
Set the material label in light path expressions. |
| Material Sample Count | long |
Material sample count per pixel. |
| Glossy Reflection Sampling Multiplier | double |
Material glossy reflection sample count multiplier. |
| Glossy Transmission Sampling Multiplier | double |
Material glossy transmission sample count multiplier. |
| Russian Roulette | double |
Amount of Russian roulette used on the material samples. |
| Roughness Noise Optimization | double |
Noise reduction strategy along rough light path. |
| Glossy Reflection Depth | long |
Maximum glossy reflection depth. |
| Glossy Transmission Depth | long |
Maximum glossy transmission depth. |
| Opacity | double[3] |
Opacity of the material. |
| Normal Mode | long |
Define which geometric normal to use for the shading. |
| Shadow Casting Mode | long |
Defines the properties of the material when casting shadows: fully opaque (regardless of the actual value of the opacity of the material), artistic (user-defined opacity and coloring), pseudo-caustics (cheaply emulating actual refractive caustics) or physical (intrinsic transparency of the material), where the last three are modulated by the opacity of the material. |
| Shadow Opacity | double |
Defines how dark the shadows cast by this material are. |
| Shadow Coloring | double |
Defines how much refraction and absorption colors affect shadowing. |
| Reflective Caustics | long |
Reflective caustics computation mode. |
| Refractive Caustics | long |
Refractive caustics computation mode. |
| Melanin Amount | double |
Concentration of natural melanin pigment: low to high values result in hair color gradually ranging between white, blond, brown/auburn/red (depending on melanin mixture) and black. |
| Melanin Redness | double |
Relative mixture of pheomelanin (yellow/red pigment) compared to eumelanin (brown/black pigment): at intermediate melanin concentrations, mixtures from 0% to 100% result in hair color gradually ranging between brown, auburn and red. |
| Dye Mix | double |
Relative blend of artificial dye pigment compared to natural melanin pigment. |
| Dye Albedo | double[3] |
Custom apparent color of artificial dye pigment (a white pigment does not absorb any light). |
| Highlight Roughness | double |
Apparent longitudinal roughness along the fibers (between the roots and the tips). |
| Fiber Softness | double |
Apparent azimuthal roughness across the fibers (within their cross-sections). |
| Cuticle Tilt | double |
Tilt angle of the cuticle scales: positive values shift the reflection highlight toward the tip and the transmission and scattering highlights toward the root, whereas negative values shift all three highlights in the opposite direction. Set to 0 degrees for synthetic hair without cuticle scales, while typical values for human hair range between 2 and 4 degrees. |
| Index Of Refraction | double |
Refractive index of the dielectric surface of the fibers: higher values give stronger Fresnel reflections and scattering inside the fibers, whereas lower values give stronger transmission through the fibers (as with wet hair). |
| Reflection Tint | double[3] |
Color tint of light that is directly reflected off the fibers surface (a.k.a. R lobe). |
| Transmission Tint | double[3] |
Tint modifying the color of light that is directly transmitted through the interior of the fibers (a.k.a. TT lobe). |
| Single Scattering Tint | double[3] |
Tint modifying the color of light that bounces once inside the fibers (a.k.a. TRT lobe). |
| Multiple Scattering Tint | double[3] |
Tint modifying the color of light that bounces multiple times inside the fibers (a.k.a. TRR+T lobe). |