libgstopengl seems to result in illegal operation

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libgstopengl seems to result in illegal operation

Postby freaxtux » Sat Apr 10, 2021 6:57 am

Platform: Raspberry Pi Zero W

`gst-inspection-1.0 /usr/lib/gstreamer-1.0/libgstopengl.so` ends up with `Illegal operation (core dumped)`.
Along with `GST_DEBUG=4`, the last debug message it shows before the error is `initialized GStreamer successfully`.
`gst-inspection-1.0 -b` shows only libgstopengl.so

I don't think I installed wrong package or binary.
Traceback with the dumped core shows libgobject-2.0 and libglib-2.0 listed.
Both are from glib2 package, but reinstalling glib2 did not improve the situation.
`readelf` on each library file shows armv6l

It doesn't seem to be the fault of OpenGL, either.
It happens regardless of enabling vc4-(f)kms-v3d dtoverlay.
I have confirmed glxgears executes without error like that
and could apply hardware acceleration in another app as well. (qv4l2)
freaxtux
 
Posts: 9
Joined: Sun Jun 08, 2014 10:59 pm

Re: libgstopengl seems to result in illegal operation

Postby freaxtux » Tue May 25, 2021 2:36 pm

Anybody? I have tried again today, with the package compiled on my RPi Zero, still illegal operation.
Grabbed PKGBUILD from arch official, and ran `makepkg -sAe`. (I'm not strong at cross compiling yet. It took so long with a couple of hiccups :P)
freaxtux
 
Posts: 9
Joined: Sun Jun 08, 2014 10:59 pm

Re: libgstopengl seems to result in illegal operation

Postby freaxtux » Tue May 25, 2021 11:29 pm

It appears gst-opengl turns on -mvfp=neon even though I manually disabled the test for NEON.
I solved it by manually removing the flag from `compile_commands.json` and `build.ninja`. plugin works well.
It looks like it's an upstream bug.
freaxtux
 
Posts: 9
Joined: Sun Jun 08, 2014 10:59 pm


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