Help: Android Templates compilation to obtain .cpp lines in the call stack

Joined72 · December 28, 2023, 4:43am

Godot Version

4.2.1

Question

How can I compile the Android Templates so to obtain in the call stack (I get the call stack with the adb logcat command) also the .cpp lines and not only the .java/.kt ones?

alex2782 · December 28, 2023, 12:25pm

Can you also post an example? At the moment I don’t know what you mean, are you trying to debug an error? You can’t debug native code with adb (i think)

In the Run/Debug Configurations window, select the editor entry, and under Debugger make sure the Debug Type is set to Dual (Java + Native)

‐----‐----‐–‐‐-----------------‐--------

Debug your app | Android Studio | Android Developers.

If you add C and C++ code to your project, Android Studio also runs the LLDB debugger in the Debug window to debug your native code.

Joined72 · December 28, 2023, 1:30pm

Let me explain my problem.
I think to have found a bug on GLES3 Godot 4 rendering for Android that crashes the game at rendering initialization, but the adb logcat show the crash call stack of the only java/kotlin sources. I need to can get the .cpp sources lines too, because I think the bug could be located in the cpp section that is called from the java one.

alex2782 · December 28, 2023, 2:55pm

java.lang.IllegalStateException: Unable to initialize engine render view ?

I think I can also reproduce this error on my old smartphone.

(When I try to debug with Android Studio I get other errors, ‘armeabi-v7a’ I may not have configured properly yet. )

Joined72 · December 28, 2023, 3:36pm

Yes, it is, also if sometime it is:
java.lang.IllegalStateException: Unable to initialize engine native layer

but I think could be the same bug (or similar).

Can you help me to use Android Studio to debug it, please?

Joined72 · December 28, 2023, 4:33pm

This error could be because this architecture is disabled in the Export Settings, try to simple enable it.

alex2782 · December 28, 2023, 6:22pm

yes i could try to debug it, without Exception , but with a breakpoint (Android Studio)

On my Samsung Tab S7, Godot C++ sources are not executed

alex2782 · December 28, 2023, 6:37pm

adb logcat > logs.txt (press Ctrl + C to cancel)

you could redirect all logcat outputs to a text file, maybe I will understand the problem better.

Joined72 · December 28, 2023, 6:46pm

Can you explain to me how I can use the Godot sources to debug the compiled .APK from Android Studio?

alex2782 · December 28, 2023, 6:59pm

I haven’t tried that yet, but it should also work, maybe like this: Debug pre-built APKs

If you want to debug the Godot sources, you should find almost everything here.
Android Studio - Importing the project

If you get stuck, let me know. So far, I have set up the development environment under MacOS. (I also know my way around Windows.)

Joined72 · December 28, 2023, 9:23pm

Thanks a lot, I’ll try ASAP.

Joined72 · December 29, 2023, 2:44pm

I’m just working with it, really powerful. Thanks a lot!

alex2782 · December 30, 2023, 12:26am

I think yesterday I executed the debugger incorrectly, godot.onInitNativeLayer should execute this C++ function.

Joined72 · December 30, 2023, 6:41am

Great, do you find the source line that caused the exception?

alex2782 · December 30, 2023, 3:35pm

You can search for it with Android Studio. But I don’t yet know why the function returns false.

Unable to initialize engine render view
Unable to initialize engine native layer

github.com

godotengine/godot/blob/13a0d6e9b253654f5cc2a44f3d0b3cae10440443/platform/android/java/lib/src/org/godotengine/godot/GodotFragment.java#L191


      
          		godot = new Godot(requireContext());
          		performEngineInitialization();
          		BenchmarkUtils.endBenchmarkMeasure("Startup", "GodotFragment::onCreate");
          	}
          
          	private void performEngineInitialization() {
          		try {
          			godot.onCreate(this);
          
          			if (!godot.onInitNativeLayer(this)) {
          				throw new IllegalStateException("Unable to initialize engine native layer");
          			}
          
          			godotContainerLayout = godot.onInitRenderView(this);
          			if (godotContainerLayout == null) {
          				throw new IllegalStateException("Unable to initialize engine render view");
          			}
          		} catch (IllegalArgumentException ignored) {
          			final Activity activity = getActivity();
          			Intent notifierIntent = new Intent(activity, activity.getClass());
          			notifierIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP);

Joined72 · December 30, 2023, 10:46pm

I think we have to find the native code called to initialize “engine render view” and to initialize “engine native layer”. I think the java calls are ONLY the binds to the native cpp code so I think we have to search for the bug in cpp native code and NOT in java one. At least for this bug.

alex2782 · December 30, 2023, 11:12pm

Have you been able to set up Android Studio successfully?

use Step Into

Bildschirmfoto 2023-12-31 um 00.09.21

alex2782 · December 31, 2023, 12:44am

On my old “potato” smartphone (bought for 90 € 6 years ago) it is very cumbersome, I have to wait over 3 minutes for the function godot.onInitNativeLayer.
I have to continue working with Logcat output.

Joined72 · December 31, 2023, 6:42am

Yes, I’m just using Android Studio, but any time I use F7 for Step Into, it ask to me to use the Arrow Keys to choose the direction…???

alex2782 · December 31, 2023, 11:37am

On Windows?

And Smart step into Shift+F7 ?