A transparent hair shader for Unity/VRchat that implements smooth dithered transparency and anisotropic highlights, reacting to lighting properly. Includes handling for baked lighting with an approximated light from light probes.

Download the repository. Then place the Shader/ folder with the shader into your Assets/ directory.

This shader contains several options that gover the different aspects of the material.

• Cutout and Transparency Threshold
  These control the cutoff point for the hair's transparency and opacity. Raising cutout will make the transparent regions of the hair fully transparent. Lowering transparency threshold will make the opaque regions fully opaque. Use this to fine tune the appearance of hair transparency.

• Sharp Transparency
  When this is active, transparency will always be sharpened to a 2 pixel wide gradient.

• Use Energy Conservation
  When active, the brightness of the specular colour will darken the albedo.

• Use Specular Colour
  By default, the colour of hair shine is derived from the Albedo texture and the Metallic slider. When active, the Specular Colour property is used directly.

• Metallic
  The level of light absorption in the specular. (While hair isn't actually metallic, the absorption of light is related to conductivity.)

• Reflectivity
  Controls the strength of glossy reflections on the hair.

• Anisotropy
  Controls the direction of anisotropic highlights on the hair. The highlight direction always lies acros the mesh's tangents/bitangents.

• Tangent Shift
  This shifts the position of the specular highlight along the hair tangents and visually pushes it around.

• Gloss Power
  This controls the width of the specular highlights for the two seperate highlights on the hair.

• Tangent Shift Texture
  Allows specifying a seperate texture with a tangent shift pattern to make hair look less flat.

• Occlusion
  Specifies areas of the hair that are less reached by light, and more shaded.

This work is licensed under MIT license.