macOS: opt out of HiDPI OpenGL surface

[Kwarf]

Hi,

I've been wanting to use this on my MacBook for quite a while now, but I've had issues with scaling making it very hard to work with. I've seen there's plans for a Metal backend, but I wanted to see if I could find some quick-fix in the meantime, and I did. 😃

It's a simple one-liner with the following result:

Before

After

When looking at the documentation I saw that:

For applications linked on macOS 10.15 or later, the default value of this property is true. For applications linked on macOS 10.14 or earlier, the default value of this property is false to keep binary compatibility.

Which likely explains why this worked fine before Catalina.

Thanks!

[emoon]

Thanks for the fix!

Yeah, I haven't gotten around to do the metal version. So many projects :/