Constant DPI regardless of resolution

[David De La Harpe Golden]

Nicolas Mailhot wrote:

> The DPI you see in software in the DPI it controls. Any auto-scaling
> done by the hardware behind its back is beyond the software control.
>
> What you really want with a DFP is to always operate it at native
> resolution without this kind of scaling,

I'd agree, but note that one of Nikos' use cases was e.g. using  a
vmware x server, which appears as a window on a real display. In that
case, when the window is resized (by changing the _virtual_ screen
size), you do need to be able to force a particular dpi for accurate
results, assuming vmware is displaying 1 virtual pixel
: 1 physical pixel (as it usually does AFAIK), or an *in-vm* 10 point
font wouldn't be 10 point on screen anymore.

Similar concerns would presumably apply to e.g. Xnest or Xephyr.