Code review comment for lp:~mir-team/mir/custom-input-regions-scale-with-surface-size

I've been mulling over the concerns and whether this is really necessary...

I think it is true that clients will mostly respond by drawing more/different stuff rather than the same stuff but bigger. I have a suspicion that input shapes may mostly scale though, e.g. circular apps?

I've realized though that any sort of races I was worrying about with input shape not being up to date during resize are pretty marginal...you don't generally interact with a surface while it's being resized. I wonder if its necessary and worthwhile to make the input shape setting at least atomic with the buffer exchange though...