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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.

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

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.

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