What's the correct approach for handling renderer width and height when resolution is not 1?

[gabrielecirulli]

I have a simple scenario: I'm setting up a canvas to render on a retina screen. That means its resolution is 2.

When I query app.renderer.width or height, I get a value that is scaled by the resolution. For example, if I set up my application with width and height of 800 and 600 respectively, I would get back 1600 and 1200.

I found this surprising, as I would've expected these values to remain resolution-independent. I understand the reasoning, as the underlying canvas does have that specific underlying resolution, but my question is, is there a utility method or attribute that's automatically scaled back by the resolution, or must I build such a utility method myself?

I wasn't able to find an answer to this by googling.