glbasesrc: gl context query deadlock
commit ee9c7f85
glbasesrc: avoid deadlock when querying for OpenGL context
Continuation of:
a4e49ba8c9657e2230aad32b6988bbda7a755440
https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/merge_requests/642
commit 69c34abd
gl: fix application context querying between elements
Fixes error introduced by:
a4e49ba8c9657e2230aad32b6988bbda7a755440
https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/merge_requests/642
Using the application GL context as the local GL context is not going to
work very well.