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Mali Graphics Debugger : No trace displayed on MGD GUI

Prabal Kumar Ghosh


Hi,

I am trying to install Mali graphics debugger(v2.0.2) on my target(arm_fbdev) as mentioned in the MGD user guide.

I started the mgddaemon and preloaded the interceptor library path before launching the OpenGL ES app but i could not get any trace on MGD GUI.

However, it seems that the host is properly connected as per below log

"Host Connected."

Also . i tried the other alternative to LD_PRELOAD ,i.e., setting LD_LIBRARY_PATH & MGD_LIBRARY_PATH as mentioned in the guide

but still could not get any traces.

I could see libEGL.so and libGLESv2.so in arm_fbdev folder other than the interceptor library.

Please suggest if I am missing anything on setup.

Thanks and Regards

Prabal Ghosh

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  • 0 Arm Employee Badge in reply to Prabal Kumar Ghosh

    Yep that would do it, glad you got it working! For the benefit of people googling this later though, it's not advisable to copy the interceptor libs to /usr/lib as it changes the behaviour for normal operation, as everything will now see the MGD libs in /usr/lib and so stuff will stop working unless you have MGD_LIBRARY_PATH correctly set. Correct operation would be achieved without this side effect if you left the real libs in /usr/lib, and set MGD_LIBRARY_PATH to that, and set LD_LIBRARY_PATH to the location of the interceptor libs for the apps you wish to trace .

    Cheers,

    Chris

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  • 0 Arm Employee Badge in reply to Prabal Kumar Ghosh

    Yep that would do it, glad you got it working! For the benefit of people googling this later though, it's not advisable to copy the interceptor libs to /usr/lib as it changes the behaviour for normal operation, as everything will now see the MGD libs in /usr/lib and so stuff will stop working unless you have MGD_LIBRARY_PATH correctly set. Correct operation would be achieved without this side effect if you left the real libs in /usr/lib, and set MGD_LIBRARY_PATH to that, and set LD_LIBRARY_PATH to the location of the interceptor libs for the apps you wish to trace .

    Cheers,

    Chris

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