[XeTeX] \XeTeXpicfile regression in XeTeX?

[Jonathan Kew]

On 4 Feb 2008, at 8:39 am, Tim Eyre ティム wrote:

> I am running w32tex. Last night I downloaded the latest version of
> XeTeX from the w32tex site.
>
> With version 3.141592-0.996 (Web2C 7.5.6) of XeTeX, \XeTeXpicfile used
> the DPI defined for a .JPG file when determining the size of the image
> as it appears on the page. In particular, my 129dpi images displayed
> at the correct size. I am using 129dpi because that is the resolution
> of my monitor.
>
> However, with version 3.141592-0.996-patch1 (Web2C 7.5.6) as
> downloaded from the w32tex site yesterday, XeTeX sets the images on
> the page much bigger than in the earlier version of XeTeX. A bit of
> experimentation with the scale parameter to \XeTeXpicfile suggests
> that the latest XeTeX is now rendering the image at 72dpi.
>
> Interestingly, both versions of XeTeX get the measurements of the box
> correct when I do
>
> \setbox0=\hbox{\XeTeXpicfile "foo.jpg"}
> \the\wd0 \the\ht0
>
> So it seems XeTeX knows how big the box should be but is rendering the
> image incorrectly.
>
> Googling around I see that XeTeX version 0.87 fixed a bug with scaling
> non-72dpi images. Could it be that this bug has come back? Or could
> this problem be specific to the Win32 port? I am running on Windows XP
> SP2.
>
> The same behaviour occurs with the "dev" version of XeTeX available on
> the w32tex site - 3.141592-2.2-0.997 (Web2C 7.5.6).
>
> If you need any more diagnostics please let me know.

Did you update xdvipdfmx to the latest version from the "xetex-dev"  
package, along with xetex itself?

JK