[guide] How to use xzp for vr big screen (subtitle: Moonlight for daydream in Oreo)

[D daydream]

Previously posted article was moved.. in Q & A section.
(I don't know why.
I posted previous thread in Guide section.)

<I just want to know truth.
Beyond sexual and monetary moralism surrounding vr devices>

https://forum.xda-developers.com/xz-premium/help/want-to-truth-sexual-monetary-morality-t3778275

I said the excellence quality of xzp 4k ips display for 'flat' vr big screen through this thread.

Anyway..
Since the request there is solved,
I leave the article in the guide format.

I will post the information for vr usage from the previous article in a guide format.

------------------------------------------------------------------------

moonlight for daydream(Nouga version)
https://www.reddit.com/r/daydream/comments/877mcp/moonlight_for_daydream_stream_your_pc/

'Moonlight for Daydream' was difficult to use on Nouga Rom
because of the symptom of screen broken in xzp stock Nouga Rom.

but I solved this problem.
Solution is simple.

You can use Xposed module to let the app recognize Oreo device as Nouga device.
Until Moonlight for Daydream Oreo version comes out,
you can use Moonlight for daydream in Oreo rom.

APP : Spoof my device
https://play.google.com/store/apps/details?id=nz.pbomb.xposed.spoofmydevice&hl=en_US

Use this application to modify the device information
and apply it to Moonlight for Daydream app.

You can also apply it to other Dreamdream apps.
If you apply this device information to system apps or other apps, the system will not work properly.

Modify <Product, Device, Model, SDK, SDK_INT>
SDK '25', SDK_INT '25' is especially important.
SDK 25 is Nouga 7.1.

I think.
Xz Premium is the highest visual quality of all virtual reality devices for use with YouTube Vr Platform.

I think
Now xzp is only commercial device in the world
that can stream 'wirelessly' 'native 4k' quality 'desktop screen itself'





----------------------------------

edit.
1. I use .75 stock for Xposed.
2. I attached 'moonlight for daydream' apk file

----------------------------------

 

[D daydream]

https://forum.xda-developers.com/xz-premium/help/how-xz-premium-vr-support-daydream-t3622696

I got help from the above article.
so I am using daydream as 4k / 2k.

1. Use adb to change the resolution to 4k / 2k.
2. Use the attached 4k / 2k qr code.
3. Enable the skip vr entry scene in Day Dream Developer option.
4. Turn off nfc.
5. Use Daydream.

Attached
Daydream qr code is the manufacturer value extracted from the Daydream View 2017 nfc information.

https://www.reddit.com/r/daydream/comments/7pb37p/qr_code_for_daydream_view_2017_version/


Original / 2k / 4k

With lens
Screen distance 40 / 40 * 1.5 = 60 / 40 * 2 = 80
Distance between lenses 64 / 64 * 1.5 = 96 / 64 * 2 = 128
Bottom-center distance 35 / 35 * 1.5 = 52.5 / 35 * 2 = 70

Distortion
k1 = 0.4331
k2 = -0.085

Four 'fov figures' are 55.

----------------------

How to activate daydream service
https://forum.xda-developers.com/lg-g5/how-to/7-0-enable-google-daydream-root-t3525848

Daydream by pass (release app limits)
https://forum.xda-developers.com/mo.../spoofing-daydream-compatible-device-t3534943

 

[D daydream]

Daydream View 2017 headset is recommended. It is comfortable-fit, lightweight, and has good fov and very little misting. First of all, It has a 'heat sink'.

https://www.virtual-reality-shop.co.uk/
There is a best-seller baofeng mosing s1.
It is known as the current mobile best fov.
I bought it.

For xzp, size do not fit, so further work is required.
There is a misting. can't use glasses. I think fov is fine but that doesn't get ahead of Daydream view 2017 quality.

Fov is less interested when adjusted.
I eventually use a Daydream view 2017 headset.

Netflix vr has a film, Pacific Rim.
Watch this movie. If you use big screen size with Daydream View 2017, you don't understand the movie action scenes. Symbol recognition fov of a human being is 60 degree.

I think..
Daydream View 2017 is great for movie watching..
There are already sufficient viewing fov to watch movies.

-----------------

Fov small, awkward sense of wearing,
but untouchable video quality is Antvr.
For image quality, sometimes I use antvr.

 

[D daydream]

Everything from my experience.
It is subjective. This may not be the correct answer.

------------------------

1.

feel dizzy when use it for the first time.
adaptation Period 2 - 3 days.

------------------------

2.

Wear glasses for the low visibility person.

If vr has a focal adjustment function.
With focal adjustment, you can adjust the focus.
you can see well.

but tired eyes after longtime use.
because the image is so close to eyes.

with glasses,
the image is approximately 1m close to eyes.
1m is comfortable distance for eyes.

-------------------

3.

Each piece of vr headset has its own point of good focus sweet spot. In sweet spot, There's less of a color diffusion. You'll have your own way.

Tips for wearing most vr headset.
It is good to feel comfortable to adjust wearing straps so that it adheres to the forehead with small amount of load on cheekbone.

--------------------

4.
qr code calibration.

I recommand Sitesinvr.com.
There is a famous headset qr code.
It is also possible to create a personal qr code using the sitesinvr app in play store.

---------------------

5.

Xz premium is not dream ready phone.
there is nfc bug.

When using a daydream view 2017 headset or third-party headset, Nfc error message will continue to pop up.

solution.

Feel free to apply anything according to circumstances.

1)
In daydream developer option,
enable skip vr entry scene option
and turn off nfc.

2)
use airplane mode and turn off nfc.

3)
Between the front cover and the smartphone,
attach a piece of 'foil'. No error message occurs even if nfc turn on.

-------------------------

6.

There is a 'drift' issue with all smartphones, gyro sensor, compass.

Even all the vr equipment.
but, Smartphone in particular

To be honest, there is no perfect solution.
I am very sorry about this...

edit.
but we can buy external sensor for daydream.
(now I got information..i'm searching.)
Is Daydream with external sensor called smartphone vr?
Anyway xzp is used.

edit. I don't find useful information.
this inormation is unclear.

<
Drift solution

1) Compass correction.

2) Gyro sensor calibration.

3) avoid Electromagnetic effects.
In vr use I dont't use anything but only daydream bluetooth controller.
( I don't know why. People report being affected.)

4) To find the controller location,
turn on location options.
It seems to affect controller drift or screen drift.
I'm not sure.
As for drift issues,
Google has advised to fully charge the controller.
I think there could be some kind of correction.

and someone recommand location - device only option.
>

There are no gyrosensor and compass compensation options on Xzp.

Use GPS status app.
This app has correction option.
and There is only compass correction option on the Google Map.

From experience,
it is likely to easily occur if you take off your headset countless times.

There are information about drift issues in the reddit.
Each will already have its own solution.


<next post..continue..>

 

[D daydream]

7.

Jiggy screen issue

<
Quoting..
Shelly tom' post in
https://www.reddit.com/r/daydream/comments/7asyyt/daydream_s8_jiggy_screen/

TL;DR - thick phone case or dirty center "nubs" in daydream view may cause that issue.

When it starts shaking and while still wearing it, try pushing on the daydream view flap and phone as if opening it. If the shaking stops the contacts are dirty.

Also, the little center nubs do three things.

they center your view.
they also resize the height from thick phone cases. This is why there are two of them.
they cause your display to jump around or "vibrate" when dirty.
Take the phone out and wipe down the nubs and the device where they meet. It should allow for a better contact and stop the shaking. If it looks clean there could be oil residue.

With curved glass phones, I've observed that thick phone cases may cause the bottom "nub" to not fully make contact on the lower part. Games with more motion from looking around causes the phone to shift slightly up thus causing poor contact on the lower "nub". The poor contact is the source of the shaking screen in this case.
>

Sometimes jiggy screen issue has come up.
so I decide to don't use cases and films on smartphones.

In my experience,
It was convenient not to use cases and films on smart phones. This is a subjective conclusion.

I use smart phone coating liquid instead.
It's a German-made nano tol pro product.
There are a lot of coating products.

----------------------

8. about color and screen door effect

Daydream view 2017 is Fresnel lense.

Fresnel lense doesn't express the difference between the brightest and darkest colors very well.

Have two effects.
1. bad image quality.
2. but reduced screen door effects.

sony stock color mode
1. standard mode is suitable nomral lense(ex antvr)
2. vivid mode is suitable fresnel lense(ex daydream)

vivid mode maximizes the contrast between the brightest and darkest colors. complements the fresnel-lense defect.

edit.
https://youtu.be/IrircflFHzw
( Looking for images related to color, I linked this video.
I'm sorry if it doesn't suit your taste.^^; )

You can see it by changing the color mode settings while watching this video.

You will also notice that the screen door effect is strong on the strong primary colors.

because
In strong primary colors, the brightness contrast between brightest and darknest sub-pixel is maximized...

However,
it should be noted that this is not a regular colored video.
--------
Additional
This is my solution
from daydream view 2017 and vivid mode

If you don't like the color,
increase the color red in white balance setup.
If the screen is yellow, increase the color blue in white balance setup.

edit.
20180425

The higher the resolution, the better it is for the screen door effect. Because at lower resolutions, pixels are clustered together. Screen door effect looks bigger. High resolution is advantageous for the screen door effect.

----------------------

9. heat issue

The foil method is neat, simple.
https://www.gamecrate.com/samsung-gear-vr-tips-tricks-fixes-overheating-devices/12916

Daydream view 2017 has 'heat sink'.

edit.

10.

you use 4k adb command/4k qr code..
don't enable Dashboard Option (in daydream develper option.)
It's not working. You don't move library option in Daydream Home.

disable dashboard option. It works.


<end>

 

[D daydream]

<how to activate chrome canary vr web browsing>

It had worked in other daydream ready phone.
But it did not work on xzp
Maybe xzp is not a daydream ready phone.

but
I noticed that it was running recently

Unfortunately, adb 4k mode does not work.
So the screen is blurry. However, video playback on the web is sharpness like YouTube cardboard(4k working).
It is quite useful..
----------------
adb 4k mode works in chrome 66 version.(not canary)
but screen is black... It's unusable
-------------------
chrome canary vr web browsing.
('Chrome 66 version' activate method is similar.)

1. Install the app : chrome canary
2. searchbar input : chrome://flags
3. Enable everything with VR, XR, or Daydream in its name.
ex)
-VR browsing native android ui
-WebXR Gamepad Support
-VR browsing web input editing
- WebVR
- WebXR Device API
- WebXR orientation sensor device
- WebVR VSync-aligned timing
- WebXR presentation render path
- VR Browsing
- Chrome VR virtual keyboard
- VR browsing experimental features
- VR browsing experimental rendering features
- VR browsing in Custom Tabs
- VR intents
- WEBVR auto presentation from intents
- Chrome icon in Daydream Home

use web broswing in daydream home .

Related Video: https://youtu.be/Mmr9PJXQHks

but..
use 'moonlight for daydream' for web broswing.
quality is better..
but you need pc..

 

[D daydream]

Screen shift app

I recently noticed this app
screen shift app.

Screen Shift: Customize your display. More details at http://aravindsagar.github.io/ScreenShift/

It was easy to change the resolution without adb command.

 

[D daydream]

<attach Daydream view 2017 qr code>
when using Moonlight Daydream,
you can comfortably enjoy the screen by leaning back like youtube vr (move screen up)

With lens
Screen distance 40
Distance between lenses 64
Bottom-center distance 40(original 35 )

Distortion
k1 = 0.4331
k2 = -0.085

Four 'fov figures' are 55.

If the resolution is 4k and the qr code is 4k,
double this number(excluded 'distortion','fov') to generate the qr code.

If the resolution is 4k and the qr code is 4k,
Moonlight for daydream video image quality is better.

 

[saved-j]

You can use my magisk module. It's in the repo. Daydream enabler.

 

[D daydream]

If you use sony stock oreo rom....

Daydream In the latest version, the library has disappeared from Daydream Home.(stock oreo rom)


If you have this symptom

Daydream Version: 1.16.180604056 (180604056) Android 7.0+
Update on: 2018-07-02

Please use.

But
You can use the latest version of the Google vr service.

 

[gaijin1%]

I'm on the Carbon ROM and no matter what I do with any 8.1 ROM, I can't get the Daydream controller to be detected when starting Daydream, but it pairs fine.
Does anyone know a fix for this?

 

[D daydream]

about image issue : big/ wrong aspect ratio

solution in thread
https://www.reddit.com/r/daydream/comments/9i7a8d/does_anyone_know_any_solution_to_this/