Branch wip/opengl

[CarlM2]

Hi Louis,

for your information, from my raspberry 32bit :

$ cat /etc/issue
Raspbian GNU/Linux 10
$ uname -a
Linux raspberry 5.4.83-v7l+ #1379 SMP Mon Dec 14 13:11:54 GMT 2020 armv7l GNU/Linux



no opengl errors

Carl