https://bugs.freedesktop.org/show_bug.cgi?id=110214
--- Comment #48 from Diego Viola diego.viola@gmail.com --- Created attachment 143834 --> https://bugs.freedesktop.org/attachment.cgi?id=143834&action=edit Xephyr.trace
Here is an apitrace to reproduce the bug, I used this:
export MESA_EXTENSION_OVERRIDE="-GL_ARB_buffer_storage" apitrace trace /usr/bin/Xephyr -glamor :1 -screen 1024x768
As described here: https://github.com/apitrace/apitrace/wiki/Glamor
I can replay it with either of those commands:
eglretrace -w Xephyr.trace
or
glretrace -w Xephyr.trace
This was iive's suggestion (thanks).