Bug 493

Summary: "FBConfig null of 0x0" exception when creating external GL context on CentOS 5.5 inside VMWare Server 2.0
Product: [JogAmp] Jogl Reporter: Wade Walker <wwalker3>
Component: x11Assignee: Wade Walker <wwalker3>
Status: RESOLVED WORKSFORME    
Severity: normal CC: sgothel
Priority: ---    
Version: 2   
Hardware: pc_x86_64   
OS: linux   
Type: --- SCM Refs:
Workaround: ---

Description Wade Walker 2011-04-10 17:33:42 CEST 
When I run an SWT unit test or an SWT OneTriangle test (from the wiki), I get the exception shown below. This is CentOS 5.5 64-bit, running as a guest OS inside VMWare server 2.0, running on Windows 7 64-bit. The graphics driver version from glxinfo is "OpenGL version string: 1.2 (1.5 Mesa 6.5.1)". I tried updating Mesa, but there are some dependency problems and I didn't want to break my OS installation.

The problem seems to be that X11GLXGraphicsConfiguration.glXFBConfigID2FBConfig() is returning null. When I patch it to just return the first FB config, the program runs fine. I'm investigating.

java.lang.Throwable: main - Info: NativeWindowFactory.<init>
	at javax.media.nativewindow.NativeWindowFactory.<clinit>(NativeWindowFactory.java:119)
	at javax.media.opengl.GLProfile.initProfilesForDefaultDevices(GLProfile.java:1164)
	at javax.media.opengl.GLProfile.access$000(GLProfile.java:71)
	at javax.media.opengl.GLProfile$1.run(GLProfile.java:117)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.media.opengl.GLProfile.initSingleton(GLProfile.java:115)
	at name.wadewalker.jogl2tests.onetriangle.OneTriangleSWT.<clinit>(OneTriangleSWT.java:29)
main - NativeWindowFactory.initSingleton(false)
Info: XInitThreads() called for concurrent Thread support
X11Util.isFirstX11ActionOnProcess: false
NativeWindowFactory.registerFactory() interface javax.media.nativewindow.NativeWindow -> jogamp.nativewindow.NativeWindowFactoryImpl@79f6f296
NativeWindowFactory firstUIActionOnProcess false
NativeWindowFactory isAWTAvailable false, defaultFactory jogamp.nativewindow.NativeWindowFactoryImpl@79f6f296
GraphicsConfigurationFactory.registerFactory() class javax.media.nativewindow.x11.X11GraphicsDevice -> jogamp.nativewindow.x11.X11GraphicsConfigurationFactory@13c695a6
GraphicsConfigurationFactory.registerFactory() interface javax.media.nativewindow.AbstractGraphicsDevice -> jogamp.nativewindow.DefaultGraphicsConfigurationFactoryImpl@787bb290
GraphicsConfigurationFactory.registerFactory() class javax.media.nativewindow.x11.X11GraphicsDevice -> jogamp.opengl.x11.glx.X11GLXGraphicsConfigurationFactory@27bc82e7
X11 Display(NULL) <:0.0>
GraphicsConfigurationFactory.registerFactory() class javax.media.nativewindow.egl.EGLGraphicsDevice -> jogamp.opengl.egl.EGLGraphicsConfigurationFactory@462ba11b
java.lang.Exception: X11Util.Display: Created new NamedX11Display[:0.0, 0x45226340, refCount 1, unCloseable false]. Thread main-SharedResourceRunner
	at jogamp.nativewindow.x11.X11Util.createDisplay(X11Util.java:317)
	at jogamp.opengl.x11.glx.X11GLXDrawableFactory$SharedResourceImplementation.createSharedResource(X11GLXDrawableFactory.java:174)
	at jogamp.opengl.SharedResourceRunner.run(SharedResourceRunner.java:206)
	at java.lang.Thread.run(Thread.java:662)
main-SharedResourceRunner - X11GraphicsDevice.setCloseDisplay(true): X11GraphicsDevice[type X11, connection :0.0, unitID 0, handle 0x45226340]
chooseCapabilities: Using recommendedIndex: idx 0
Exception in thread "main" javax.media.opengl.GLException: FBConfig null of 0x0
	at jogamp.opengl.x11.glx.X11GLXGraphicsConfiguration.create(X11GLXGraphicsConfiguration.java:66)
	at jogamp.opengl.x11.glx.X11ExternalGLXContext.create(X11ExternalGLXContext.java:78)
	at jogamp.opengl.x11.glx.X11GLXDrawableFactory.createExternalGLContextImpl(X11GLXDrawableFactory.java:421)
	at jogamp.opengl.GLDrawableFactoryImpl.createExternalGLContext(GLDrawableFactoryImpl.java:260)
	at name.wadewalker.jogl2tests.onetriangle.OneTriangleSWT.main(OneTriangleSWT.java:49)
main-SharedResourceRunner - X11GraphicsDevice.close(): X11GraphicsDevice[type X11, connection :0.0, unitID 0, handle 0x45226340]
java.lang.Exception: X11Util.Display: Closing new NamedX11Display[:0.0, 0x45226340, refCount 1, unCloseable false]. Thread main-SharedResourceRunner
	at jogamp.nativewindow.x11.X11Util.closeDisplay(X11Util.java:342)
	at javax.media.nativewindow.x11.X11GraphicsDevice.close(X11GraphicsDevice.java:96)
	at jogamp.opengl.x11.glx.X11GLXDrawableFactory$SharedResourceImplementation.releaseSharedResource(X11GLXDrawableFactory.java:246)
	at jogamp.opengl.SharedResourceRunner.releaseSharedResources(SharedResourceRunner.java:245)
	at jogamp.opengl.SharedResourceRunner.run(SharedResourceRunner.java:229)
	at java.lang.Thread.run(Thread.java:662)
java.lang.Exception: X11Util.Display: Shutdown (close open / pending Displays: false, open (no close attempt): 0/0, open (no close attempt and uncloseable): 0)
	at jogamp.nativewindow.x11.X11Util.shutdown(X11Util.java:198)
	at jogamp.opengl.x11.glx.X11GLXDrawableFactory.shutdownInstance(X11GLXDrawableFactory.java:320)
	at javax.media.opengl.GLDrawableFactory.shutdownImpl(GLDrawableFactory.java:201)
	at javax.media.opengl.GLDrawableFactory.access$100(GLDrawableFactory.java:91)
	at javax.media.opengl.GLDrawableFactory$2.run(GLDrawableFactory.java:172)
	at java.lang.Thread.run(Thread.java:662)
Comment 1 Wade Walker 2011-04-10 17:34:25 CEST 
Assigned to me, since I'm checking for fixes.
Comment 2 Wade Walker 2011-04-10 21:11:02 CEST 
This problem is very similar to the one we had on 32-bit Windows trying to get the HDC of an external context. In this case, we can't get the framebuffer config ID of the external context.

Working by analogy with the solution in WindowsExternalWGLContext.create(), I made this change in X11ExternalGLXContext.create():

    X11GLXGraphicsConfiguration cfg = null;
    if(1 != GLX.glXQueryContext(display, ctx, GLX.GLX_FBCONFIG_ID, val, 0)) {
    	// sometimes external contexts don't give us a framebuffer config ID; if not,
    	// create and use a default config
    	GLCapabilities glcapsDefault = new GLCapabilities(GLProfile.getDefault());
        cfg = X11GLXGraphicsConfigurationFactory.chooseGraphicsConfigurationStatic(glcapsDefault, glcapsDefault, null, x11Screen);
        if(DEBUG) {
            System.err.println("X11ExternalGLXContext invalid FBCONFIG_ID "+val[0]+", using default cfg: " + cfg);
        }
    }
    else {
	    cfg = X11GLXGraphicsConfiguration.create(glp, x11Screen, val[0]);
    }

This makes the SWT OneTriangle test pass. I'll try it on an SWT RCP app next.
Comment 3 Wade Walker 2011-04-10 21:46:25 CEST 
Confirmed that this works correctly for Eclipse RCP apps. Will try tomorrow on native (non-VMWare) CentOS to make sure this doesn't break the common case.
Comment 4 Wade Walker 2011-04-13 02:35:54 CEST 
Submitted a fix for this at https://github.com/sgothel/jogl/pull/35 (my branch https://github.com/WadeWalker/jogl/tree/2011-04-12-fix-bug-493). I've tested on native CentOS 5.5 with nvidia Quadro, and guest CentOS 5.5 inside VMWare with Mesa, and it works both ways.
Comment 5 Sven Gothel 2011-11-25 03:31:52 CET 
All test passed on CentOS, see bug 451, comment 3