Hi guys,I'm having trouble. Our game runs perfectly fine on S6 and S7 with Android 6. As soon as we update our S7 to Android N the game starts getting "vertical tearing" like described in this thread:https://forums.oculus.com/community/discussion/50589/oculus-home-graphic-problem-and-other-apps#latest Also note how in that thread an Oculus staff member claimed just 2 weeks ago to believe that Android N is still not supported by GearVR. Is this still true? Even with the S8 being released? Is this entire issue something we should worry about? We don't even know what causes it or if there is anything we can even do on our end to fix it.Here is a reddit thread of people complaining about this specific issue as well:https://www.reddit.com/r/GearVR/comments/5z0xpp/did_samsung_throttle_cpu_performance_for_gear_vr/ So yeah, any info or help would be appreciated!

firagabird said:@Norman3D Has Oculus given you any further updates on this unresolved issue?nope. It's my understanding that if this is indeed a driver issue there is nothing Oculus can do since it's 100% Samsung's responsibility. Oculus can't push driver updated to Samsung's Android OS afaik. I can't wait for Go, since Oculus can control the entire stack of the device and this way can ensure it's a stable and consistent platform for development.

I'll PM you a link to our project. For those of you lurking the thread I'll make sure to update as soon as I know more!

aussieburgerVR said: Norman3D said: Here is a link of the finished game, the footage you see is with the high quality profile:https://www.youtube.com/watch?v=U9qT_2NJbbQ Great stuff! Would love to ask some unreal related questions for tips on how you achieved such a great looking product! Are you using mobile HDR on or off? Are your materials lit or unlit? How did you achieve the reflections?How did you get your textures/materials so crisp looking? at what size do you recommend for the textures and any specific material trick?Many thanks for sharing the information! :)I plan on making a blog post going into a lot of detail. But to answer quicklymobile HDR offMaterials are 100% unlit, lighting is rendered in 3dsmax with vray.Reflections are cubemaps rendered in the editor. I'm using OpenGLES 3.0 since I can use cubemap mip maps and plug in a roughness texture to control the mip bias per pixel. The shader is totally unlit so I'm adding the cubemap there. I'm not relying on Unreal to do this automatically like materials usually work.The textures look crips because they are 1024x1024, I think at times even 2048x2048 but tiled a lot. We had very limited time, the actual art production took only around 25 days for 20 levels so we knew we had to reuse the same textures over and over again and make the art awesome in other ways.I'll be writhing a blog post at some point detailing all of it. I think a lot could be done better in regards to how Unreal does things in terms of mobile shaders, lighting and FX.

Norman3D said:Here is a link of the finished game, the footage you see is with the high quality profile:https://www.youtube.com/watch?v=U9qT_2NJbbQ Is this game out yet? I don't see it on the store yet. Looks great!

imperativity said: @Norman3D Turns out this isa known issue (Nougat slower than Marshmallow) at the native level, notspecific to any engine. We believe it is due to extra background activity and weare asking Samsung to address it.Thanks so much for the info @imperativity To be clear, I can put my game through the submission process even though this is an issue that is present due to Nougat, correct? (I was afraid I was going to get rejected because of this)

Vertical tearing with Android N, not with Android 6.

39 Replies

Norman3D
Expert Protege
9 years ago

imperativity said:

@Norman3D

Turns out this is
a known issue (Nougat slower than Marshmallow) at the native level, not
specific to any engine.
We believe it is due to extra background activity and we
are asking Samsung to address it.

Thanks so much for the info @imperativity
To be clear, I can put my game through the submission process even though this is an issue that is present due to Nougat, correct? (I was afraid I was going to get rejected because of this)
Norman3D
Expert Protege
9 years ago

imperativity said:

@Norman3D

Ok, I have confirmation that there is no longer any expected performance degradation going from Marshmallow to Nougat. If your app is still encountering issues, we will need to see the output of "adb logcat" and possibly
get a minimal project that reproduces the issue to debug.

Let me know if you want to provide either of these options (or both) for our review.

I can confirm on my side that the issue is still present in Nougat. I've downgraded my S7 to Marshmallow this morning and the issue is gone.
How can I contact you to provide you the project privately?
Norman3D
Expert Protege
9 years ago
To clarify: I'm confirming the issue still remains the same. Vertical tearing is present on Android N but not Android 6 on Samsung S7
Norman3D
Expert Protege
9 years ago
I'll PM you a link to our project. For those of you lurking the thread I'll make sure to update as soon as I know more!
Leemon89
Explorer
9 years ago
Any updates about this issue? I've noticed this tearing even in super-light scenes with stable 60fps. Tearing appears more often with higher load on a scene. For me it looks like some sort of time-warp issue.
Norman3D
Expert Protege
9 years ago

Leemon89 said:

Any updates about this issue? I've noticed this tearing even in super-light scenes with stable 60fps. Tearing appears more often with higher load on a scene. For me it looks like some sort of time-warp issue.

Developer support has been looking at the issue for a few days. Haven't heard anything from them yet but I'm told to expect news at some point this week.
Leemon89
Explorer
9 years ago
A little update: I've noticed tearing happens for left eye only! Right is ok at any load.
Norman3D
Expert Protege
9 years ago

Leemon89 said:

A little update: I've noticed tearing happens for left eye only! Right is ok at any load.

I can say that this is true 90% of the time. But I have experienced occasional tearing on the right eye also.
Norman3D
Expert Protege
9 years ago
Just wanted to update and let everyone know that as of these last few days, after one of the gearvr updates the vertical tearing is also happening on Android 6 on Samsung S7. Something I can guarantee was not happening up util now. One of the updates has definitely broken it, so now the vertical tearing appears both in Android 6 and Android 7 son Samsung 7.

EDIT: And here is another thread that has popped up with the same complaint:
https://forums.oculus.com/developer/discussion/52004/vertical-screen-tearing-on-s7
Norman3D
Expert Protege
9 years ago
Just to update everyone. Issue is now gone after today's update on Android 6 on S7. I'm going to check if it's still present on Android 7 and I'll update this post.

EDIT: Issue still present on Android 7

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Vertical tearing with Android N, not with Android 6.

39 Replies

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