Make more structs derive PartialEq/Eq/Hash

[swooster]

Adds equality-related traits to VkClearRect, VkOffset2D, VkOffset3D,
VkRect2D and VkSurfaceFormatKHR. Fixes a typo preventing said traits
from being applied to VkExtent2D.

[swooster]

NOTE: I haven't regenerated vk.rs because when I try to do that it comes out without newlines. (Maybe because I'm on Windows?) If somebody else is able to get that working, I'd be grateful. (EDIT: the commit was updated to include vk.rs)

[Ralith]

I haven't regenerated vk.rs because when I try to do that it comes out without newlines.

This is the expected behavior; the workflow is to run cargo fmt after regenerating.

[aloucks]

I use core.autocrlf=input even on Windows and I think rustfmt will fallback to use native line endings if it can't detect any in the file (and I think the generated vk.rs is all on one line).

Not sure if this will help your specific case, but I leave an uncommitted rustfmt.toml in my ash directory:

newline_style = "Unix"

[swooster]

Ok, thanks for the explanation. I've pushed a version of the commit with changes to vk.rs included.

[Ralith]

Seems reasonable.