# render abnormal after my vtk upgrade from 8.2 to 9.4rc2

**URL:** https://discourse.vtk.org/t/render-abnormal-after-my-vtk-upgrade-from-8-2-to-9-4rc2/14862
**Category:** Development
**Created:** [November 13, 2024, 2:39am UTC](https://discourse.vtk.org/t/render-abnormal-after-my-vtk-upgrade-from-8-2-to-9-4rc2/14862 "2024-11-13T02:39:08Z")
**Posts on this page:** 1
**Showing post:** 2

<div class="post-metadata">

### Author: ![dgobbi](https://discourse.vtk.org/user_avatar/discourse.vtk.org/dgobbi/32/18_2.png) [@dgobbi](https://discourse.vtk.org/u/dgobbi)
#### Post date: [November 14, 2024, 1:21pm UTC](https://discourse.vtk.org/t/render-abnormal-after-my-vtk-upgrade-from-8-2-to-9-4rc2/14862/2 "2024-11-14T13:21:34Z")

</div>

The vtkCellArray does seem like the most likely issue, a summary of its changes for VTK 9 are described in the following thread:  
[https://discourse.vtk.org/t/upcoming-changes-to-vtkcellarray](https://discourse.vtk.org/t/upcoming-changes-to-vtkcellarray)

---

_[View the full topic](https://discourse.vtk.org/t/render-abnormal-after-my-vtk-upgrade-from-8-2-to-9-4rc2/14862)._