4.23.0 p7 Android build crashes the Quest if the GPU lightmass plugin code is in the UE dir.

[MaxArch]

Testing 4.23p7. Has anyone noticed / can anyone confirm that projects converted from 4.22 crash immediately on the Quest? Steps to reproduce;

1. start 4.23.0p7 from launcher

2. select an existing project and Open A Copy

3. in the project settings, change the 'Package for Oculus Mobile Devices' to Quest

4. package + install

5. open on Quest - immediate crash - no splash screen.

In the logcat I see:

Fatal error: .... ShaderCompiler.cpp

Error: the global shader cache file '../../../Engine/GlobalShaderCache-GSGL_ES3_1_ANDROID.bin' is missing

Any suggestions?

Edit1: tested some more and I get this error as well with a brand new 4.23p7 project. Reported @ Epic.

Edit2: changed the title. Problem seems to be the GPU lightmass plugin.
If that code is in the UE dir, it crashes builds on the Quest. More info
in my post #5

Edit3: same issue and workaround for 4.23.0p8

[motorsep]

MaxArch said:

Testing 4.23p7. Has anyone noticed / can anyone confirm that projects converted from 4.22 crash immediately on the Quest? Steps to reproduce;

1. start 4.23.0p7 from launcher

2. select an existing project and Open A Copy

3. in the project settings, change the 'Package for Oculus Mobile Devices' to Quest

4. package + install

5. open on Quest - immediate crash - no splash screen.

In the logcat I see:

Fatal error: .... ShaderCompiler.cpp

Error: the global shader cache file '../../../Engine/GlobalShaderCache-GSGL_ES3_1_ANDROID.bin' is missing

Any suggestions?

Edit1: tested some more and I get this error as well with a brand new 4.23p7 project. Reported @ Epic.

Just out of curiosity, did you make a proper bug report to both Epic and Oculus (using respective bug report forms) ?

[MaxArch]

@motorsep I made a proper bug report to Epic. As soon as I get a mail with the issue number I will post here again.

I expect its an Unreal 4.23 bug. Also, I have no idea where to report to Oculus

[motorsep]

MaxArch said:

Also, I have no idea where to report to Oculus

https://developer.oculus.com/bugs/

[MaxArch]

@motorsep FYI; Epic couldn't reproduce the error. I Investigated some more. Turns out the crash is related to the GPU Lightmass plugin I use.

If the GPU lightmass code is in the UE directory, the build crashes the Quest. If the original UE code is pasted back into the UE dir again, the builds work fine.

So for now, you can use the GPU lightmass plugin in 4.23, only when you want to pack for Quest, you have to close UE, paste the original code back into the UE dir, start UE and make a build. When you need the plugin again, close UE, paste the GPUlightmass code into the UE dir etc.

I reached out to the new person who picked up that plugin after the original guy started to work for Epic.

[motorsep]

@MaxArch

I guess since I never test my Go project launching it from the Editor, I've never experienced that bug (I always build apk and deploy it via adb).

[MaxArch]

@motorsep Sometimes I launch from editor, sometimes I pack for Android ASTC and install from a powershell.

If the GPUlightmass code is in de UE folder, both builds crash the Quest.

[motorsep]

MaxArch said:

@motorsep Sometimes I launch from editor, sometimes I pack for Android ASTC and install from a powershell.

If the GPUlightmass code is in de UE folder, both builds crash the Quest.

That's odd, because GPULightmass code is only in the Lightmass itself, which doesn't get packaged into builds. 

[MaxArch]

@motorsep The 'new person' who makes the build now said the same. Still, if the GPUlightmass code is there, it somehow messes up the build (see a snippet from the crash below). If the code is not there - all works fine.

LogAndroid: Error: Fatal error: [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/Engine/Private/ShaderCompiler/ShaderCompiler.cpp] [Line: 4241]
LogPlayLevel: Error:   08-27 08:32:07.647  9910  9926 D UE4     : [2019.08.27-06.32.07:647][  0]LogAndroid: Error: The global shader cache file '../../../Engine/GlobalShaderCache-GLSL_ES3_1_ANDROID.bin' is missing.
LogPlayLevel: Error:   08-27 08:32:07.647  9910  9926 D UE4     : [2019.08.27-06.32.07:647][  0]LogAndroid: Error:
LogPlayLevel: Error:   08-27 08:32:07.648  9910  9926 D UE4     : [2019.08.27-06.32.07:647][  0]LogAndroid: Error: Your application is built to load COOKED content. No COOKED content was found; This usually means you did not cook content for this build.

[DesertDuck]

Hi Max - where can I find the GPU lightmass code? I am experiencing the same issue. Thanks so much for the help so far