HiDPI canvas

[emersion]

Who would benefit from this feature?

End users

What is this feature about?

Right now we render a low resolution canvas on all devices. Would be nicer to render a canvas according to the physical screen resolution. For instance, on a HiDPI display where 1 logical pixel maps to 2 physical pixels, we'd use twice a larger canvas.

Ref https://stackoverflow.com/a/78375499/3567989

Why is this feature valuable?

This feature matters because it'd look a whole lot better on fancy screens.

Anything else people should know?

No response