Add support for EGL 1.4

[underdoeg]

Debian 10 and (I think) 11 only have libEGL Version 1.4. Those OS are still widely used in integrated hardware like Rock PI and similar ARM devices.
This patch checks for the EGL version and calls older methods if necessary.

[bruvzg]

1.5 was assumed as default when EGL was only used with ANGLE on macOS/Windows, for X11 in should be fine to 1.4 (not sure about Wayland).

[underdoeg]

Trying to fix the formatting.

@bruvzg This change should theoretically not affect newer systems with EGL 1.5 in place

[AThousandShips]

I'd recommend using clang-format, see here

[AThousandShips]

Please amend your commits instead of making new ones, with git commit --amend

[underdoeg]

too late to ammend but I haves squashed them now

[Riteo]

I'm a bit surprised that EGL 1.5 is still not widely supported (from what I can tell, it's a 9+ years old spec), that said, improving compatibility is very good! :)

Still, the way the version is checked is a bit redundant in some places and outright wrong in the others, so some changes are due.

[underdoeg]

I'm a bit surprised that EGL 1.5 is still not widely supported (from what I can tell, it's a 9+ years old spec), that said, improving compatibility is very good! :)

That is sadly very often the case with embedded arm devices. lots of manufacturers have their own OS or push Android and Debian is just an afterthought.

[Riteo]

Perfect, great job! Thanks for your patience!

[Riteo]

For posterity: since we're just checking two versions a normal if/else is fine, but if we want to check multiple versions in the future we will need to switch to an if/else if and check for the individual versions.

Sound trivial but I can imagine forgetting about it in the distant future.

[akien-mga]

Thanks!