# Trying to diagnose an issue with VirtualGL and Slicer

**URL:** <https://discourse.slicer.org/t/trying-to-diagnose-an-issue-with-virtualgl-and-slicer/17685>\
**Category:** Development\
**Created:** [May 19, 2021, 1:46am UTC](https://discourse.slicer.org/t/trying-to-diagnose-an-issue-with-virtualgl-and-slicer/17685 "2021-05-19T01:46:26Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![muratmaga](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/muratmaga/32/3622_2.png) [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Post date:** [May 19, 2021, 3:52am UTC](https://discourse.slicer.org/t/trying-to-diagnose-an-issue-with-virtualgl-and-slicer/17685/6 "2021-05-19T03:52:53Z")

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If I disable and then re-enable depth-peeling, artifact appears again.  
When I hide the ROI, artifact disappears. Showing it brings it back.  
Zooming in/out to extremes has no impact.  
Perspective vs orthogonal has no impact  
All tested with latest preview.

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