This page includes details on the V-Ray Hair Sampler texture used with Houdini hair systems.

 

Overview

The V-Ray TexHairSampler is a utility node that provides extra output attributes which can be used when shading hair.

Used with the V-Ray Hair 3 material, this node allows you to map color, incandescence, and transparency along the length of a hair strand, as well as the ability to randomize such properties on a per-strand basis to create stunning hair looks.

 

 

 


UI Paths

||mat Network|| > V-Ray> Utility Texture > V-Ray Hair Sampler

||out Network|| > V-Ray Render Elements node > V-Ray > Utility Texture > V-Ray Hair Sampler

 

 

Node

The TexHairSapmler node contains the unique input and outputs listed below.

 

 

distance_along_strand – Provides information about the shaded part of the hair strand. For the base of the strand, the value is 0.0, and for the tip it is 1.0.

hair_color – Provides information about the diffuse color along the hair strand.

hair_incandescence – Provides information about the incandescence color along the hair strand.

hair_transparency – Provides information about the transparency along the hair strand.

random_by_strand – Provides a unique random floating point value for each strand in the hair system, which can be used with a ramp texture for example to blend between two colors.

 

Parameters

 

 

Strand Max Distance – Allows the user to set the max strand length. Typically, this value should be equal to the longest strand of hair.