# Xmesa and offscreen rendering

**URL:** https://discourse.vtk.org/t/xmesa-and-offscreen-rendering/12951
**Category:** Support
**Created:** [December 21, 2023, 7:40pm UTC](https://discourse.vtk.org/t/xmesa-and-offscreen-rendering/12951 "2023-12-21T19:40:22Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Rafael\_Scatena](https://discourse.vtk.org/user_avatar/discourse.vtk.org/rafael_scatena/32/7820_2.png) [@Rafael\_Scatena](https://discourse.vtk.org/u/Rafael_Scatena)
#### Post date: [December 21, 2023, 7:40pm UTC](https://discourse.vtk.org/t/xmesa-and-offscreen-rendering/12951/1 "2023-12-21T19:40:22Z")

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What is the xmesa library used for and do I need it to perform offscreen rendering on a linux server?

Thank you,

 ![image](https://discourse.vtk.org/uploads/default/original/2X/2/27399e73ccb87d8037e413620a73c8f0c4b1aa54.png)

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### Author: ![ben.boeckel](https://discourse.vtk.org/letter_avatar_proxy/v4/letter/b/ea5d25/32.png) [@ben.boeckel](https://discourse.vtk.org/u/ben.boeckel)
#### Post date: [December 22, 2023, 2:53pm UTC](https://discourse.vtk.org/t/xmesa-and-offscreen-rendering/12951/2 "2023-12-22T14:53:44Z")

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I don’t think it is needed; is there an error message saying it is needed somewhere? `FindOpenGL` tries a variety of things to search for and puts a result together based on what it found, so “not found” bits may not necessarily be relevant.