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VR machine + projection machine + cluster clock

Posted: 06 Apr 2019, 16:32
by Robert
Hi,

Is it possible to synchronise a runtime running a VR configuration and another runtime running at 50fps for projection purpose ?

Regards,

Robert

Re: VR machine + projection machine + cluster clock

Posted: 09 Apr 2019, 16:23
by Karol
Hi Robert,

in the AV Outputs configuration of the Ventuz Config Editor there is a 'Frame Rate Multiplier': https://www.ventuz.com/support/help/lat ... Rates.html

Your setup is pretty suboptimal because the least common multiple of 50 and 90 is 450. The projection machine would need to validate 9 times and the VR machine 5 times per frame.

Best Regards
Karol

Re: VR machine + projection machine + cluster clock

Posted: 11 Apr 2019, 23:04
by Robert
Hi Karol,

Thank you very much.

Regards,
Robert

Re: VR machine + projection machine + cluster clock

Posted: 19 May 2019, 20:28
by Robert
Karol,

This setting seems to be too hard to synchronise for the cluster. I switched to a 60hz ×3 + 90hz ×2 mixed timings.

Regards,

Robert

Re: VR machine + projection machine + cluster clock

Posted: 11 Jul 2019, 13:12
by Robert
Hi Karol,

Here is my feedback regarding this setup. Multiplying the frame rate introduce a performance issue. Validation time increases too much. As soon as we multiply the frame rate the rendering is not able to reach 90 fps.

Regards,

Robert

Re: VR machine + projection machine + cluster clock

Posted: 12 Jul 2019, 12:40
by Karol
That's the drawback of synchronizing two machines with different FPS.
The scene needs to be 'lightweight' enough to render in the first frame tough it's validated multiple times per frame.

Best Regards
Karol