Overview

The VRayHairInfoTex texture allows you to vary different shading properties along hair strands. This texture can be used together with the VRayHairMtl material to control the look of the hair. It can also be used on Hair&Fur, VRayOrnatrixMod and VRayFur geometry.

UI Path

||Material Editor window|| > Material/Map Browser > Maps > V-Ray > VRayHairInfoTex

Parameters

output – Specifies how the two colors are blended:

Position along strand – Blends between color A and color B based on the relative position of the shaded point along a hair strand. The color A parameter is used at the root of the strands, and the color B parameter is used at the tip.
Random by strand index – Blends between color A and color B randomly based on the index of each strand. This mode only works for Hair&Fur and VRayOrnatrixMod geometry (but not for VRayFur at the moment).
Hair&Fur /Alembic color – This mode provides mapped hair color that is available from the geometry itself. It works with the color channel of alembic hair when used in its assigned material. It can also collect the material parameters information of the Hair&Fur (WSM) modifier. For the last, you need to set the mr prim mode in Hair and Fur Rendering options and apply the actual material in the Custom Shader rollout of the Hair&Fur parameters.
Hair&Fur opacity – This mode works only for Hair&Fur (WSM) modifier; the resulting color is taken from the opacity generated by the Tip Fade parameter of the Hair&Fur modifier.
Position along strand absolute – Blends between color A and color B based on the absolute distance of the shaded point along a hair strand. This option uses the absolute distance parameter instead of hair tip to pin the color B position. When the absolute distance is lower than the actual hair length, the gradient is repeated over the length of the hair strand.

color A – The first color used when output is Position along strand, Position along strand absolute or Random by strand index. This parameter can be mapped in the Maps section below.

color B – The second color used when output is Position along strand , Position along strand absolute or Random by strand index. This parameter can be mapped in the Maps section below.

bias – Can be used to move the middle point between the two colors when output is Position along strand , Position along strand absolute or Random by strand index. This parameter can be mapped in the Maps section below.

seed offset – The random seed when output is Random by strand index.