# background error in raytracing

**URL:** https://discourse.paraview.org/t/background-error-in-raytracing/7898
**Category:** ParaView Support
**Created:** [August 31, 2021, 6:14pm UTC](https://discourse.paraview.org/t/background-error-in-raytracing/7898 "2021-08-31T18:14:48Z")
**Posts on this page:** 1
**Showing post:** 3

<div class="post-metadata">

### Author: ![timothee.chabat](https://discourse.paraview.org/user_avatar/discourse.paraview.org/timothee.chabat/32/5729_2.png) [@timothee.chabat](https://discourse.paraview.org/u/timothee.chabat)
#### Post date: [September 13, 2021, 8:29am UTC](https://discourse.paraview.org/t/background-error-in-raytracing/7898/3 "2021-09-13T08:29:26Z")

</div>

This looks like a plane from a bug with the 3d interactive widgets (see [Enabling ray tracing with glyphs](https://discourse.paraview.org/t/enabling-ray-tracing-with-glyphs/7603)). This also looks like what is described here : [OSPray pathtracer: erratic walls](https://discourse.paraview.org/t/ospray-pathtracer-erratic-walls/7966).

Is there any filter that creates an interactive 3d widget in your pipeline (like the plane of the `Clip` filter) ?  
If so please try these steps :

- open your scene (do not activate the ray tracing before, not even once)
- toggle off the visibility for all of your interactive 3d widgets
- now toggle on ray tracing

---

_[View the full topic](https://discourse.paraview.org/t/background-error-in-raytracing/7898)._