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PxrHairColor outputs 3 colours to provide physically plausible results with the PxrMarschnerHair BxDF. They should be connected like this:
| Note |
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For realistic results, the PxrMarschnerHair's Primary Specular Color should always be white while using the Physical controls. |
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Output the per-curve random values, if hairIndexPrimvar is defined. This is a debugging switch to check if the hair ID primitive variable has been correctly setup. Below is an example of correct IDs.
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Groom & Renders by Paul Sheehy