How to recognize the end of rendering?

[generalistr6]

In the main.cpp, there is g_num_samples.
Setting g_num_samples to '-1' cause infinite rendering.
I think it is rendered even though there is no sample to render.
Is there anyway to recognize the end of rendering?

[KaoCC]

Hi,

What do you mean ?
I think it is set on purpose.

If you need to limit the number of sampling you can try to add "-ns num" as part of the command line argument.

[generalistr6]

I don't need to set the number of sampling.
I want to stop the rendering when there is no pixels to be rendered.
For now, it seams, the rendering operates as infinite loop.
I want to figure out the last sample count when there is no pixels to be rendered.