[XeTeX] xelatex doesn't support 'patterns'

[Mojca Miklavec]

On Sat, May 21, 2011 at 21:52, narke wrote:
> Hi,
>
> If using xelatex, 'patterns' will not get draw.
>
> Attached is a minimal example.  Does anyone know that?  I also found
> the similar problem with 'shadings'.

This is a documented limitation. See "10.2 Supported Output Formats"
in pgfmanual.pdf (texdoc tikz):

File pgfsys-dvipdfm.def This is a driver file for use with (la)tex
followed by dvipdfm. It includes pgfsys-common-pdf.def. This driver
supports most of pgf’s features, but there are some restrictions:
1. In LATEX mode it uses graphicx for the graphics inclusion and does
not support masking.
...
4. Patterns are not (cannot) be supported.
5. Functional shadings are not (cannot) be supported.

Mojca