# Vray and Xgen

**URL:** <https://forums.chaos.com/t/vray-and-xgen/61619>\
**Category:** Issues\
**Created:** [January 4, 2017, 6:12am UTC](https://forums.chaos.com/t/vray-and-xgen/61619 "2017-01-04T06:12:12Z")\
**Posts on this page:** 1\
**Showing post:** 7

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**Author:** ![sharktacos](https://avatars.discourse-cdn.com/v4/letter/s/f0a364/32.png) [@sharktacos](https://forums.chaos.com/u/sharktacos)\
**Post date:** [April 13, 2017, 5:13am UTC](https://forums.chaos.com/t/vray-and-xgen/61619/7 "2017-04-13T05:13:52Z")

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> [@studio setup for rendering](https://forums.chaos.com/t/studio-setup-for-rendering/51481/4):
>
> **Question:** Is there a way to define how strong the root\_tip is, as well as the root\_color, other than just the color in the ptex files. When i only assigned the root\_color, the effect was somewhat weak, which forced me to assign a root\_tip as well.
> 
> Thank you for all of your help!

You don’t need to use the root and tip parameters necessarily. Instead you can plug the “distance along strand” output of a VrayHairSampler into the V-coord of a Ramp and then plug that into the desired slot on your material.

> **[Light Collab - Help Documents](https://docs.sharktacos.com/vray/xgen.html)**

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