Any default template projects without modifications, deployed to the device, can’t show anything on after the splash screen. Device log from Xcode 7 shows that iOS restarts the GPU every time I start any Unreal Engine apps compiled in UE 4.9.1. It seems that it only happens on the Metal renderer.
I have also noticed that triggering orientation change during (exactly during, not after) the GPU restart allows me to get back to the game (everything works, all visuals are back). In any other case it’s just a black screen.
on iOS 9.0.1, Mac OS Yosemite 10.10.5, Xcode 7.0, Unreal 4.9.1
Please upload your from your iOS device. You can do that by attempting the following:
Windows:
Open iPhonePackager (Engine/DotNET/IOS)
Select a uproject file (Optional)
Select the Advance Tools tab
Select Other Deployment Tools…
Select Backup Documents…
Select the IPA for the game you wish to get a log for
The documents directory data will then be copied to Engine/DotNET/IOS/IOS_Backups or GameDir/IOS_Backups if a uproject was selected
The log can then be found at IOS_Backups/Game/Saved/
Mac:
Open Xcode (Install Xcode if you have not already)
Open Window|Devices
Select the device you want to get the log off of
Select the app you want to get the log from
Select the gear icon under the app list
Select Download Container
Select a location for the container file
Navigate to the file via Finder
Right click and select Show Package Contents
Navigate to the location of the log (AppData/Documents/Game/Saved//)
If you are able to, please also upload your project and provide it to me as a zipped file. If you wish to keep it private, please send it to me through a private message on the forums.
Thank you for providing us with this information. I have looked into this further and spoken with the developers. They’re aware of the issue and haven’t been able to come to a resolution as of yet. The report for this issue is UE-21013. Please feel free to check into this in a few weeks.
I’m having the same problem. Nothing is being rendered on the , but it works fine on the 5c and other non-metal devices. The device log shows the GPU is crashing and being restarted:
Recompiled the project on 4.9.2. The problem is back. The same errors, the same error log. Even the Tappy Chicken from the AppStore doesn’t work on the device. Any other games on other engines work fine.
Same problem. ( iphone5s , 4.9.2 full source)
rendering is not work. only black screen.
but I can touch UMG button. and iphone5, iphone6 is work(same source)
Could you please include the from your device? Also attempt this on Unreal Engine 4.10 Preview and let me know what happens. If you’re not sure how to get the off of the device, please review this [documentation][1].
looks like don’t solve black screen problem, just drop Metal support for iPhone5S, iPadAir2, iPadMini2 on iOS9, and iPhone 6 on iOS8(but in current branch stage for all devices on iOS 8).
This issue was fixed in 2749536 and it was verified. However, the iPad Air was left out and that’s being corrected currently. UE-21013 has been reopened and we’re hoping to have it verified soon.
( iphone5s , 4.9.2 full source)