Xavier Claessens

Note that @nirbheek already made a patch that does this, in an abandoned PR: https://github.com/mesonbuild/meson/pull/2617/commits/7c15837bd25d37672bfddcb6ef9402792b3d3c23.

FYI, I have a PR for that: https://github.com/mesonbuild/meson/pull/10064.

As far so know the problem is not in which thread you create the GST gl context, but where you activate it.

`gst_gl_context_thread_add` is part of the ABI, so it shouldn't have been inlined. Maybe you have stripped/optimized build?

The fact that it doesn't have the function symbol for the caller of gst_gl_context_thread_add() indicates it's probably called from Servo and not from GStreamer, otherwise it would have the symbol...

You're waiting on the wrong context. See here how to get GStreamer's context: https://gitlab.freedesktop.org/xclaesse/gstreamer_demo/blob/master/VideoScene.cpp#L296