[vtkusers] how can i evalutate rendering time in a volume?

[(과장)허창용]

Hi, vtkusers

I have a question.

How to evaluate rendering time in a volume?

For example, it is "volume rendering progress bar" that appear in VolView.

How can i do? use Addobserver Methods? use extents vtkclass?

Thank you very much.
regards,
heochy
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