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VR Performance and Monitor mirroring


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Posted

I wonder, if the 2D output (mirroring) when playing in VR costs performance? And does the screen resolution play a role?

Did somebody make some tests?

I mean it is not necessary to have monitor filled the with VR image and if it would safe performance, why not turning it off. Would you get more performance, if the 2D screen resolution would be lower thant the VR resolution - because somehow, there must be transformation between these resolutions.

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Posted

The mirror size makes no difference to performance…

SYSTEM SPECS: Hardware AMD 9800X3D, 64Gb RAM, 4090 FE, Virpil T50CM3 Throttle, WinWIng Orion 2 & F-16EX + MFG Crosswinds V2, Varjo Aero
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Posted (edited)

The same GPU as is rendering the view in your eyes, but it is a copy not really doing the work a 2nd time…  think of it this way, if you have two monitors, and in windows you set it up to duplicate the display on both, it doesn’t impact performance there either…

It’s  a very simple thing to test…

Or you could just search the forums for everyone else who has tried it…

Edited by speed-of-heat

SYSTEM SPECS: Hardware AMD 9800X3D, 64Gb RAM, 4090 FE, Virpil T50CM3 Throttle, WinWIng Orion 2 & F-16EX + MFG Crosswinds V2, Varjo Aero
SOFTWARE: Microsoft Windows 11, VoiceAttack & VAICOM PRO

YOUTUBE CHANNEL: @speed-of-heat

1569924735_WildcardsBadgerFAASig.jpg.dbb8c2a337e37c2bfb12855f86d70fd5.jpg

Posted (edited)
On 11/20/2022 at 2:25 PM, v2tec said:

I wonder, if the 2D output (mirroring) when playing in VR costs performance? And does the screen resolution play a role?

Did somebody make some tests?

I mean it is not necessary to have monitor filled the with VR image and if it would safe performance, why not turning it off. Would you get more performance, if the 2D screen resolution would be lower thant the VR resolution - because somehow, there must be transformation between these resolutions.

Hello,

Some people have tested with Occulus,
It is very useful on mid - system

My own test with Rift + 1080ti + i5-10600k
- i can fly 90hz everywhere in my favorite test mission with OTT desktop resolution 800*600,
- whereas i get 45hz over city without OTT

So i use OTT desktop resolution 800*600 for now

 

 

Edited by fab.13
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  • 1 month later...
Posted (edited)

If your system isnt GPU limited you may not see a performance difference. But if it is, then there could be some gains see

Another reason is to improve headset tracking, as DOF cameras of headsets can be confused by the mirror image

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Edited by winghunter

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