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MaxArch
Inspiring
March 4, 2020

Unreal 4.25.X changes and issues

New UE version 4.25 - some changes / issues. Lets put them in one topic for an easy overview and catching up..

4.25.0 preview 1
- Too bad, the new Epic-GPU lightmass plugin is not in this version. Target might be 4.26 (if you build the dev branch you get 4.26)
- When you make a build for Quest, it will fail and you need to install a newer NDK (21). Normally its in the UE extras directory. Not yet. Find it here https://developer.android.com/ndk/downloads ; Download it, extract the zip and put it in the NVPACK dir. Change the Dir in the project settings.
- With the new NDK, building for Quest works but it immediately crashes on Quest. There are a few new project settings but haven't found the right combo yet. ADB logcat has: 'Abort message: 'The requested API version in ovrInitParms (1.1.29.0) is not compatible with this version of VrApi Loader (1.1.31.0)!''. No clue if this is a user setting or a Engine-bug. Reported at Epic.
- update 03-05: tried both building a new project and re-using an existing and working 4.24 project. Both crash on Quest. Only difference is the existing project takes longer to crash.
- update 03-06 "The crash on Quest is known and we're working to have it fixed prior to full 4.25 release."




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    FFTVegter
    New Participant
    July 21, 2020

    cookiejar2 said:

    Hmmm... trying to get our project running on 4.25 (oculus src) again. It still crashes immediatly on the quest, and the log gives me a...

    06-12 00:56:07.912 16800 16800 E AndroidRuntime: FATAL EXCEPTION: main
    06-12 00:56:07.912 16800 16800 E AndroidRuntime: Process: de.coregames.soar, PID: 16800
    06-12 00:56:07.912 16800 16800 E AndroidRuntime: java.lang.UnsatisfiedLinkError: dlopen failed: cannot locate symbol "fgets_unlocked" referenced by "/data/app/de.coregames.soar-1/lib/arm64/libUE4.so"...
    06-12 00:56:07.912 16800 16800 E AndroidRuntime: at java.lang.Runtime.loadLibrary0(Runtime.java:989)
    06-12 00:56:07.912 16800 16800 E AndroidRuntime: at java.lang.System.loadLibrary(System.java:1530)
    06-12 00:56:07.912 16800 16800 E AndroidRuntime: at com.epicgames.ue4.GameActivity.<clinit>(GameActivity.java:6210)
    06-12 00:56:07.912 16800 16800 E AndroidRuntime: at java.lang.Class.newInstance(Native Method)
    06-12 00:56:07.912 16800 16800 E AndroidRuntime: at android.app.Instrumentation.newActivity(Instrumentation.java:1079)
    06-12 00:56:07.912 16800 16800 E AndroidRuntime: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2572)
    06-12 00:56:07.912 16800 16800 E AndroidRuntime: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2741)
    06-12 00:56:07.912 16800 16800 E AndroidRuntime: at android.app.ActivityThread.-wrap12(ActivityThread.java)
    06-12 00:56:07.912 16800 16800 E AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1478)
    06-12 00:56:07.912 16800 16800 E AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:102)
    06-12 00:56:07.912 16800 16800 E AndroidRuntime: at android.os.Looper.loop(Looper.java:154)
    06-12 00:56:07.912 16800 16800 E AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:6165)
    06-12 00:56:07.912 16800 16800 E AndroidRuntime: at java.lang.reflect.Method.invoke(Native Method)
    06-12 00:56:07.912 16800 16800 E AndroidRuntime: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
    06-12 00:56:07.912 16800 16800 E AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)

    I tried with/without vulkan enabled. I also tried to set "NDK API Level to `android-19`" as suggested by  ikyhdst somewhere above.

    @ikyhdst , could you be so kind to show me the rest of your project settings as well? Vulkan? Mobile HDR? I must admit I'm a bit lost here...

    I'll try again with the updated 4.25.1 binary from Epic, maybe that gives a better result.

    /hauke




    Any luck? Stuck at the same point now...
    FFTVegter
    New Participant
    July 22, 2020
    NKD API level android-21 fixed it for us. (not latest).
    sculptrvr
    New Participant
    September 24, 2020
    I got past the "fgets_unlocked" issue by updating my Quest OS from 19 to 20 and removing a ton of unused plugins. I'm not sure which thing worked.
    mpuLs3
    New Participant
    April 16, 2021

    Has anyone managed to get GPU lightmass (in UE 4.26.2) to work successfully for the Quest / Quest 2 in actually translating the light map information over to the headset? Every time I launch or package it out after the GPU bake, it doesn't seem to work at all, just flat walls with next to no lighting information. Is it not possible yet or am I missing something? 😞 (Pretty sure I'm missing something lol)

    rasamaya
    Participant
    June 6, 2021

    yes if you disable virtual textures/lightmaps fyi I am using non epic vs of gpulightmass. I know you need them on with raytrace epic gpulightmass. I will test today if we can turn off after bake with epics. otherwise just use Luo version for 4.26.2

    Ordered and Received DK1 Ordered DK2 within 18 minutes of announcement!! woot! Concerned about facebook thing, but would have done the same myself. Developing the VR gloves you always imagined(over 1 year full-time development, and looking sweet)
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