# Rendering performance for millions of voxels and polyhedrons

**URL:** https://discourse.vtk.org/t/rendering-performance-for-millions-of-voxels-and-polyhedrons/9352
**Category:** Development
**Created:** [September 15, 2022, 7:54am UTC](https://discourse.vtk.org/t/rendering-performance-for-millions-of-voxels-and-polyhedrons/9352 "2022-09-15T07:54:08Z")
**Posts on this page:** 1
**Showing post:** 7

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### Author: ![toddy](https://discourse.vtk.org/letter_avatar_proxy/v4/letter/t/edb3f5/32.png) [@toddy](https://discourse.vtk.org/u/toddy)
#### Post date: [September 24, 2022, 1:19pm UTC](https://discourse.vtk.org/t/rendering-performance-for-millions-of-voxels-and-polyhedrons/9352/7 "2022-09-24T13:19:57Z")

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> [@chrisiou](#):
>
> Do you know if it is more suitable to use vtkGlyph3DMapper of vtkProgrammableGlyphFilter? Because in some Gluph3D examples they use vtkPolyDataMapper.

Sorry. I don’t know the answer to that but I expect someone in this forum would.

Since you are moving to using vtkGlyph3D I hope you have noticed this recent topic too. [Slow update when using vtkGlyph3D in Activiz 9.1](https://discourse.vtk.org/t/slow-update-when-using-vtkglyph3d-in-activiz-9-1/9377)

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