# 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:** 20

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### Author: ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)
#### Post date: [May 28, 2021, 8:11pm UTC](https://discourse.slicer.org/t/trying-to-diagnose-an-issue-with-virtualgl-and-slicer/17685/20 "2021-05-28T20:11:34Z")

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You could try adding depth peeling to the example code @alireza added here: [Incorrect volume rendering bounds - first and last slice - #5 by alireza](https://discourse.slicer.org/t/incorrect-volume-rendering-bounds-first-and-last-slice/17827/5)

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