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Freitag, 6. Juli 2018, 07:41

[adidas VR Store] Screen Blackout Issue


adidas Korea VR_Store Link

Web è

Mobile è

I have a promblem like a blackout screen issue with our VR_Store developed using Krpano software.

[Description of the Issue/Error]

In the first few scenes, the movements between scenes are smooth and no problem, but the screens gradually comes to be unstable while moving and become a blackout screen finally.

This error occurred only while moving scenes including embedded video contents like the below picture but No problems while moving scenes not including video contents.

I tested on iPhone4 device with iOS: 10.3.3 and Safari 10.0, but any black-out issue was not occurred.

Additionally, website data size of was noramlly 40 Mb per VR_Store site link on iPhoneX, but the website data size was not over 1Mb on iPhone4.

(Website data size check: iPhone Settings > Safari > Advanced > Website Data)

Finally, my test result are:

1) There was black-out issue on iPhoneX with iOS: 11.4 and Safari 11.0. Additionally, website data was getting increased during access to the VR_Store and moving around. (about 40Mb each access)

2) There was NO black-out issue on iPhone4 with iOS: 10.3.3 and Safari 10.0. Additionally, website data was kept 1Mb under during access to the VR_Store.

Could you anybody look into this issue and advice me to fix this problem?

Thanks for your help in advance!

Dieser Beitrag wurde bereits 3 mal editiert, zuletzt von »SKPark« (6. Juli 2018, 08:08)

Scott Witte


Beiträge: 221

Wohnort: Milwaukee, WI USA

Beruf: Professional Photographer

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Samstag, 7. Juli 2018, 18:20

First off... Darn impressive project.

Have you tried monitoring the site using developer tools? To see why there is a 10:1 data difference between the two phones plug them into a Mac (Enable developer tools in Safari and debug in the phone settings. It has been awhile so I don't remember all the details.) At a minimum, you will see what the data differences are and what is missing during the blackouts. Same for the desktop site.

If you only work on PCs create a virtual Mac using VMWare for phone debugging. You need a small hack or two but there are plenty of guides on the net for that.


Sonntag, 8. Juli 2018, 15:22


the problem seems to a new WebGL-related bug in Safari (since Safari 11) - the same as here.

It should be fixed with the next krpano release by an internal workaround for that Safari bug.

Best regards,