# Displaying render information in \`vtkRenderer\`
**URL:** https://discourse.vtk.org/t/displaying-render-information-in-vtkrenderer/4972
**Category:** Support
**Created:** [January 9, 2021, 7:39am UTC](https://discourse.vtk.org/t/displaying-render-information-in-vtkrenderer/4972 "2021-01-09T07:39:00Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@acamill](https://discourse.vtk.org/u/acamill)
#### Post date: [January 9, 2021, 7:39am UTC](https://discourse.vtk.org/t/displaying-render-information-in-vtkrenderer/4972/1 "2021-01-09T07:39:00Z")
Hello!
I am displaying some 3d file in a vtkRenderer and I wish to know if there is a utility in the framework to directly dispay a metrics/information element in the renderer?
I saw the framerate data is available, but maybe I need to do that by myself? Asking in case I did not find in the example.
On iOS using c++.
Cheers,
Alex
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### Author:  [@lassoan](https://discourse.vtk.org/u/lassoan)
#### Post date: [January 11, 2021, 5:22pm UTC](https://discourse.vtk.org/t/displaying-render-information-in-vtkrenderer/4972/2 "2021-01-11T17:22:00Z")
You can use vtkCornerAnnotation to display FPS in a render window. You can find a complete implementation in CTK ([https://github.com/commontk/CTK/blob/master/Libs/Visualization/VTK/Widgets/ctkVTKAbstractView.cpp](https://github.com/commontk/CTK/blob/master/Libs/Visualization/VTK/Widgets/ctkVTKAbstractView.cpp)).
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### Author:  [@acamill](https://discourse.vtk.org/u/acamill)
#### Post date: [January 12, 2021, 1:23am UTC](https://discourse.vtk.org/t/displaying-render-information-in-vtkrenderer/4972/3 "2021-01-12T01:23:10Z")
Thankis you very much!