[SOLVED] Exception: Could not locate OpenAL library

Troubleshooting sound
41

I’m curious: what are the results with assertions disabled?

42

After disabling assertions, the application no longer crashes and works as expected both with and without an audio device plugged in.

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43

I’d like to understand the cause of the OpenGLException. To debug this, it might help to run the renderer in Graphics Debug mode. This is a bit tricky…

  1. I don’t know how to do this through the JME test chooser. You’ll need to figure out a way to run the app (TestAmbient) directly: not through the chooser. (In the JME SDK, by opening the source file and pressing Shift-F6.)
  2. Change body of TestAmbient.main() like so:
        TestAmbient test = new TestAmbient();
        AppSettings as = new AppSettings(true);
        as.setGraphicsDebug(true);
        test.setSettings(as);
        test.start();
  1. Run with assertions enabled and capture all console output. (There may be a lot of it.)
  2. The setting is persistent, so when you’re done, re-run the application with as.setGraphicsDebug(false).
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44

OK, this is the resulting debug message + full stacktrace:

[JME3] OpenGL debug message
       ID: 1280
       Source: API
       Type: ERROR
       Severity: HIGH
       Message: Error has been generated. GL error GL_INVALID_ENUM in GetBooleanv: (ID: 659224037) Generic error
java.lang.Exception: Stack trace
	at java.base/java.lang.Thread.dumpStack(Thread.java:1387)
	at com.jme3.system.lwjgl.LwjglGLDebugOutputHandler.handleMessage(LwjglGLDebugOutputHandler.java:76)
	at org.lwjgl.opengl.GL11.nglGetBooleanv(Native Method)
	at org.lwjgl.opengl.GL11.glGetBoolean(GL11.java:1321)
	at com.jme3.renderer.lwjgl.LwjglGL.glGetBoolean(LwjglGL.java:280)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at com.jme3.renderer.opengl.GLDebug.invoke(GLDebug.java:107)
	at com.sun.proxy.$Proxy0.glGetBoolean(Unknown Source)
	at com.jme3.renderer.opengl.GLRenderer.getBoolean(GLRenderer.java:603)
	at com.jme3.renderer.opengl.GLRenderer.setMainFrameBufferSrgb(GLRenderer.java:3229)
	at com.jme3.system.lwjgl.LwjglContext.initContextFirstTime(LwjglContext.java:296)
	at com.jme3.system.lwjgl.LwjglContext.internalCreate(LwjglContext.java:429)
	at com.jme3.system.lwjgl.LwjglAbstractDisplay.initInThread(LwjglAbstractDisplay.java:121)
	at com.jme3.system.lwjgl.LwjglAbstractDisplay.run(LwjglAbstractDisplay.java:218)
	at java.base/java.lang.Thread.run(Thread.java:834)
Dec 01, 2020 8:29:37 PM com.jme3.app.LegacyApplication handleError
SEVERE: Failed to create display
com.jme3.renderer.RendererException: An OpenGL error occurred - Invalid enum argument (Error Code: 1280)
	at com.jme3.renderer.opengl.GLDebug.checkError(GLDebug.java:101)
	at com.jme3.renderer.opengl.GLDebug.invoke(GLDebug.java:113)
	at com.sun.proxy.$Proxy0.glGetBoolean(Unknown Source)
	at com.jme3.renderer.opengl.GLRenderer.getBoolean(GLRenderer.java:603)
	at com.jme3.renderer.opengl.GLRenderer.setMainFrameBufferSrgb(GLRenderer.java:3229)
	at com.jme3.system.lwjgl.LwjglContext.initContextFirstTime(LwjglContext.java:296)
	at com.jme3.system.lwjgl.LwjglContext.internalCreate(LwjglContext.java:429)
	at com.jme3.system.lwjgl.LwjglAbstractDisplay.initInThread(LwjglAbstractDisplay.java:121)
	at com.jme3.system.lwjgl.LwjglAbstractDisplay.run(LwjglAbstractDisplay.java:218)
	at java.base/java.lang.Thread.run(Thread.java:834)

Dec 01, 2020 8:29:37 PM com.jme3.app.LegacyApplication handleError
SEVERE: Uncaught exception thrown in Thread[jME3 Main,5,main]
java.lang.IllegalMonitorStateException
	at java.base/java.lang.Object.notifyAll(Native Method)
	at com.jme3.system.lwjgl.LwjglAbstractDisplay.initInThread(LwjglAbstractDisplay.java:132)
	at com.jme3.system.lwjgl.LwjglAbstractDisplay.run(LwjglAbstractDisplay.java:218)
	at java.base/java.lang.Thread.run(Thread.java:834)
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45

I have tested the sgold-issue-1383 branch.
I took the new LwjglAbstractDisplay.java and created a new jme3-lwjgl-3.2.1-stable.jar.
Copied that in the folder C:\Program Files\jmonkeyplatform\jmonkeyplatform\libs
Run the jMonkeyEngine and run my new Game about 30 Times.
There no problems anymore.
(I use the sound card “Creative Sound Blaster Audigy Fx”.)
Thank you, sgold, for this bug fix.

2 Likes
46

That’s encouraging. Thanks for your help, @thomas1 !

1 Like
47

I went ahead and integrated PR 1432.

I’m still interested in the GL_INVALID_ENUM and any similar issue with LWJGL v3.

3 Likes