VR fine-tuning questions

[danio1011]

Hello all,

I'm working on a set of 360s for a client.  I usually do stills for them, but this time around they've asked for panos for their Oculus Go.

I recently got a headset myself to test before sending, and so far the results have been decent. I'm just looking to improve things as I head towards the final renderings.  I have of course watched the very helpful Corona VR tutorial video and browsed around online quite a bit.

In no particular order I'm wondering:

-Spherical vs Cube (both stereo) preferences?
-If I go Cube I'm assuming I disable image filtering?  Would I also disable de-noising and bloom and glare?  Or no?  Disable sharpening\blurring in VFB?
-Recommended max rendering size for each...I'm guessing about 18k x 1.5k for stereo cube and....8k x 8k for stereo spherical? Or are those still too low?

Anyway, any thoughts or feedback on the above would be appreciated.  I'm going to give stereo cube a shot today, see if I like it any better than stereo spherical.

Thanks all!
Daniel

EDIT:  Oh, I'm also getting kind of a 'sparkle' effect on some materials that might be a little noisy.  I almost think it's the difference between left eye and right eye noise.  I'm trying to optimize my scene but wondering if that's something avoidable?

EDIT 2:  I'm discovering that the latest 360s app doesn't like the way that Corona\VRay exports cubemaps....https://forums.oculusvr.com/community/discussion/51935/new-version-oculus-360-photos-doesnt-support-cubemap-and-subfolders-anymore

[TomG]

I think Oculus fixed that cubemap problem (a general cubemap problem rather than Corona specific) - I believe, from what I heard from other users, that should have been fixed 3 or 4 months back.

And 8K image should be great in VR, raising it above that probably won't give that much extra visual fidelity - I suggest 4K for tests, and then 6 or 8K for finals. You could try 10 or 12K and see if there is any visual improvement.

Spherical and Cube usually comes down to the total number of pixels - Cubemaps need less pixels for the same resolution, which means faster render times. And easier to edit in post since there is no spherical distortion in the image to account for, in case you want to do image editing in Photoshop etc.

[danio1011]

I think Oculus fixed that cubemap problem (a general cubemap problem rather than Corona specific) - I believe, from what I heard from other users, that should have been fixed 3 or 4 months back.

Thanks Tom!  Appreciate the feedback.

As for cubemaps, I tried multiple times but no luck.  Maybe I’ll try with a 6:1 mono and see if it reads that... it just wasn’t seeing my 12:1 stereo jpeg.

I tried 8k x 8k spherica and it’s really, really nice :)