# transparent objects not rendered with vtk9 and mesa 18.3.6 on centos7

**URL:** https://discourse.vtk.org/t/transparent-objects-not-rendered-with-vtk9-and-mesa-18-3-6-on-centos7/9189
**Category:** Support
**Created:** [August 23, 2022, 2:56am UTC](https://discourse.vtk.org/t/transparent-objects-not-rendered-with-vtk9-and-mesa-18-3-6-on-centos7/9189 "2022-08-23T02:56:38Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![ErroMsg](https://discourse.vtk.org/user_avatar/discourse.vtk.org/erromsg/32/5682_2.png) [@ErroMsg](https://discourse.vtk.org/u/ErroMsg)
#### Post date: [August 23, 2022, 2:56am UTC](https://discourse.vtk.org/t/transparent-objects-not-rendered-with-vtk9-and-mesa-18-3-6-on-centos7/9189/1 "2022-08-23T02:56:38Z")

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I tried to use VTK 9.0.2 to show transparent objects on CentOS-7 with mesa , but the objects which is set opacity less than 1.0 will not render.

I’v tried use LIBGL\_ALWAYS\_SOFTWARE=1 , it doesn’t work.

Has anyone using mesa experienced similar problems？