Re: [cross-project-issues-dev] How to provide HDPI icons in yourplug-in

[David Williams <david_williams@xxxxxxx>]

On 09/21/2016 08:20 PM, Stefan Xenos wrote:
> What I proposed would occur once, so it would slow down *installation* 
> time but not startup time. We could show a message along the lines of 
> "installing icons" to make it clear to the user what's going on.
>
> Or do you have some reason to believe this would have some impact on 
> startup time once the icons are installed?

I do not know a definitive answer, but found some hints. At first I was 
thinking something similar and did some googling for "svg png 
performance" and "does OS cache SVG" and a) did not find much about 
icons, per se, but otherwise seemed to be a lot of out-of-date 
information that I think is not always currently true ... most of it 
browser and webpage focused but (that is, low signal to noise ratio) and 
b) also found some bugs in Firefox's system that had titles such as "SVG 
cache must be invalidated if System theme changes". That, and even 
"scaling" seems like the kind of thing that might effect us. At that 
point I decided "this is complicated" and didn't read further. :)
 HTH