Ubuntu core sample snap for x11 opengles to target armhf/arm64/amd64/i386, which uses native egl x11 and opengl es APIs.

Install as " snap install opengles-sample_1.0_all.snap --devmode" to avoid error below,

   error: cannot perform the following tasks:
   - Mount snap "opengles-sample" (unset) (snap "opengles-sample" requires devmode or confinement override)

==> better migration were already available at;
    https://github.com/ubuntu/snappy-playpen/tree/master/mesa-demos