IQ on Oculus Go with WebXR

jeromebg

Profi

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Wohnort: Angers - France

Beruf: 360 experiences creator

1

Sonntag, 3. Mai 2020, 12:59

Hi, now that Oculus Go has updated it's browser only WebXR is available.
Maybe I'm doing something wrong, but now image quality is horrible compared to WebVR display ?
Even with oversampling="3" it's still blurry...
Will there be a fix or can it already be fixed with some new code ?
THX

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klaus.krpano

Administrator

Beiträge: 13 499

2

Sonntag, 3. Mai 2020, 19:57

Hi,

I haven't tested the latest Oculus Browser version on the Oculus Go yet (will do soon), so my information might be not correct, but the last time I've tested WebXR in the Oculus Browser the max. custom resolution was hard-limited (depending on the actual system) and there was no way to increase it about that limit.

The problem was also mentioned here:
https://krpano.com/examples/webxr/

'Fixing' that would be only possible by the Chrome and Oculus Browser developers.

Best regards,
Klaus

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jeromebg

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Wohnort: Angers - France

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3

Sonntag, 3. Mai 2020, 21:29

Ok, thanx Klaus, hope they'll fix that as it's a huge step back compared to Webvr...

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klaus.krpano

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4

Sonntag, 3. Mai 2020, 21:37

Zitat

hope they'll fix

So far I understand that limit is intended and used to avoid potential performance problems... (even when it would work fine with higher resolutions).

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thomasmcvea

Anfänger

Beiträge: 45

5

Montag, 4. Mai 2020, 12:23

I have noticed the same Jerome. Will be watching with anticipation for future updates that will hopefully come from Chrome and Oculus Browser developers.

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Scott Witte

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Wohnort: Milwaukee, WI USA

Beruf: Professional Photographer

6

Freitag, 8. Mai 2020, 01:34

According to the release notes on Oculus Browser 9.0:

Zitat

. Removed WebVR support. Some immersive experiences may no longer work until sites update to the latest WebXR standard.

Is KRPano using "the latest WebXR standard" or is WebXR just not up to snuff? It is still only version 0.40, after all. Or is it, as you suggest, Oculus purposefully dumbing down display rendering? (I couldn't find a reference.)

Scott Witte
Tour de Force 360VR
Scott Witte Photography

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klaus.krpano

Administrator

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7

Samstag, 9. Mai 2020, 08:59

Zitat von »Scott Witte«

Is KRPano using "the latest WebXR standard"

Yes, but the specs are just one side, the real browser implemention is the other one. There are also some parts, especially runtime behavior, where the exact behavior is not exactly defined and browsers are acting differently. And before each release krpano is typically tested with the current available browser versions.

Zitat

or is WebXR just not up to snuff? It is still only version 0.40, after all. Or is it, as you suggest, Oculus purposefully dumbing down display rendering? (I couldn't find a reference.)

What means 'not up to snuff'?

If you're interested you can follow the WebXR API development here:
https://github.com/immersive-web/webxr

Here a quote from the specs about the rendering resolution:
https://immersive-web.github.io/webxr/#n…ffer-resolution

Zitat

Note: The user agent is free to use and method of its choosing to estimate the recommended WebGL framebuffer resolution.

and here more to read about the framebuffer scaling:
https://github.com/immersive-web/webxr/issues/349
https://github.com/immersive-web/webxr/issues/348

Best regards,
Klaus

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Scott Witte

Fortgeschrittener

Beiträge: 382

Wohnort: Milwaukee, WI USA

Beruf: Professional Photographer

8

Samstag, 9. Mai 2020, 16:15

Zitat

What means 'not up to snuff'?

Well, as a bit of semi-entertaining knowledge:

Zitat

up to snuff
1. informal
meeting the required standard.
"they need a million dollars to get their facilities up to snuff"

'Up to snuff' originated in the early 19th century. ... This clearly shows the derivation to be from 'snuff', the powdered tobacco that had become fashionable to inhale in the late 17th century. The phrase derives from the stimulating effect of taking snuff.

Scott Witte
Tour de Force 360VR
Scott Witte Photography

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Scott Witte

Fortgeschrittener

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Wohnort: Milwaukee, WI USA

Beruf: Professional Photographer

9

Samstag, 9. Mai 2020, 16:45

Hi Klaus,

So, ouch. Skimming the WebXR documentation and forums really takes me deeper than I want to go. I appreciate that you seem to be staying on top of it, though.

Near as I can decipher WebXR should be able to deliver as good of resolution as WebVR, it is just a matter of what the app, the browser, in this case, asks for. So maybe it is as simple as they are using an incorrect variable..... or maybe something much more complex. But they should be able to deliver better visual quality if they wanted.

Scott Witte
Tour de Force 360VR
Scott Witte Photography

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jeromebg

Profi

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Wohnort: Angers - France

Beruf: 360 experiences creator

10

Dienstag, 26. Mai 2020, 17:08

Just updated with krpano 1.20.7 and image quality is still pretty ugly in WebXR ...
Is it because I don't have dedicated cube files for VR or it's just that webXR sucks for now ?

here is my tile sizes :

Quellcode

<image type="CUBE" multires="true" tilesize="512">			<level tiledimagewidth="5120" tiledimageheight="5120">				<cube url="panos/buren1.tiles/%s/l4/%0v/l4_%s_%0v_%0h.jpg" />			</level>			<level tiledimagewidth="2560" tiledimageheight="2560">				<cube url="panos/buren1.tiles/%s/l3/%0v/l3_%s_%0v_%0h.jpg" />			</level>			<level tiledimagewidth="1280" tiledimageheight="1280">				<cube url="panos/buren1.tiles/%s/l2/%0v/l2_%s_%0v_%0h.jpg" />			</level>			<level tiledimagewidth="640" tiledimageheight="640">				<cube url="panos/buren1.tiles/%s/l1/%0v/l1_%s_%0v_%0h.jpg" />			</level>		</image>

and here is a comparaison between WebXR in Oculus Browser and WebVR in Firefox Reality

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klaus.krpano

Administrator

Beiträge: 13 499

11

Dienstag, 26. Mai 2020, 22:27

For me the resolution is fine now...

Are you sure you're actually using version 1.20.7?
Try clearing your browser cache.

And where do you test?
Oculus Go, Oculus Quest or GearVR?
And what Oculus Browser version?