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emalafeew
Inspiring
October 14, 2019

Low Overhead Mode in Oculus Integration 1.41

The release notes for 1.41 describe a "low overhead mode" for Player Settings, but after importing I don't see that in Unity 2019.1.  

It's been in the release notes of Unity 2019.2 so I'm confused is this a Unity or Oculus Integration feature? 

    9 replies

    Anonymous
    October 15, 2019
    It's in Player Settings, under XR Settings. I'm using Unity 2019.2.8. The setting has been in Unity for a couple of 2019.2.x releases now.

    Anonymous
    October 15, 2019
    For everyone who do not know what low overhead mode is (incl myself); 
    It is described as increasing performance by doing “less driver validation”. This could allow VR developers to squeeze out extra performance on Oculus Quest, Oculus Go, and the Samsung Gear VR.
    emalafeewAuthor
    Inspiring
    October 15, 2019
    Thanks I confirmed it doesn't appear in 2019.1's XR Settings, it must only appear in 2019.2 then.  

    It's mentioned in the Oculus Integration 1.41 release notes so expected it would apply to previous versions of Unity
    • Added support for “Low Overhead Mode” in Player Settings for Android applications. Applications that use OpenGL ES can build release apks that will will skip error checking and improve performance of the app.  
    Weitin
    Inspiring
    October 22, 2019
    How's the performance increase on Low Overhead Mode? Does it help lower GPU utilization? My project is on 1.38, but if the increase is noticeable then I'll consider upgrading. 
    Wei Tin Yuen, VR Developer B) Toronto, Canada http://tinforge.com/
    JianZ
    Inspiring
    October 25, 2019
    hey Weitin,  "Low Overhead mode" is a cpu optimization,  which makes graphic driver less taxing. For example, it saves drawcall submission cost on CPU, results a better render thread performance,  but no impact on GPU
    Weitin
    Inspiring
    October 28, 2019
    Ahh thank you for clarifying :)
    Wei Tin Yuen, VR Developer B) Toronto, Canada http://tinforge.com/
    soaringrocstudi
    New Participant
    November 11, 2019
    Is there any reason not to use Low Overhead mode? Is the performance boost "free" or am I risking certain issues down the road?
    FuzzyOnion
    Up and Coming
    March 14, 2020
    I found an issue on my end, building for Oculus Go, checking this option created a problem with playing back two videos to textures at the same time. Hope this helps someone out there.
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