Setup path tracing
Path tracing shares the general requirements and setup as other ray tracing effects, so for information on hardware requirements and set up, see getting started with ray tracing. You must carry out this setup before you can add path tracing to your Scene.
Add path tracing to a scene
Path tracing uses the Volume framework, so to enable this feature, and modify its properties, you must add a Path Tracing override to a Volume in your Scene. To do this:
- In the Scene or Hierarchy view, select a GameObject that contains a Volume component to view it in the Inspector.
- In the Inspector, select Add Override > Ray Tracing > Path Tracing.
- In the Inspector for the Path Tracing Volume Override, set State to Enabled. If you don't see State, make sure your HDRP Project supports ray tracing. For information on setting up ray tracing in HDRP, see getting started with ray tracing. This switches HDRP to path-traced rendering and you should initially see a noisy image that converges towards a clean result.
- If the image doesn't converge over time, select the drop-down next to the effect toggle and enable Always Refresh.

Properties
For information about path tracing properties, refer to Path tracing reference.
Did you find this page useful? Please give it a rating:
Thanks for rating this page!
What kind of problem would you like to report?
Thanks for letting us know! This page has been marked for review based on your feedback.
If you have time, you can provide more information to help us fix the problem faster.
Provide more information
You've told us this page needs code samples. If you'd like to help us further, you could provide a code sample, or tell us about what kind of code sample you'd like to see:
You've told us there are code samples on this page which don't work. If you know how to fix it, or have something better we could use instead, please let us know:
You've told us there is information missing from this page. Please tell us more about what's missing:
You've told us there is incorrect information on this page. If you know what we should change to make it correct, please tell us:
You've told us this page has unclear or confusing information. Please tell us more about what you found unclear or confusing, or let us know how we could make it clearer:
You've told us there is a spelling or grammar error on this page. Please tell us what's wrong:
You've told us this page has a problem. Please tell us more about what's wrong:
Thank you for helping to make the Unity documentation better!
Your feedback has been submitted as a ticket for our documentation team to review.
We are not able to reply to every ticket submitted.