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What does Device.Present in the Unity profiler represents and why does it takes so long?

hgdebarbahgdebarba
edited June 2017 in Questions And Answers

Hello,

I am trying to understand how the GPU time is being spent in my HoloLens application.
I often get it running at 30FPS, but if I consult the Unity profiler, it says that the Camera.Rendering is taking less than 8ms. That is, less than 25% of the frame update interval is being used in the actual rendering of the frame.

I would like to understand what the Device.Present does (besides the presentation synchronization), and whether I can rely on the Camera.Render time that the profiler is giving me. Does anyone has some knowledge on that?
Here is a screenshot.

Thanks a lot!

P.S. I am aware that the GPU profiling can reduce performance, but this was the frame rate even before connecting the Unity profiler.

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