[bug-gs] CMR12 Type 1 font and AFPL gs-8.1x

[Harald Anlauf]

Hi all,

I feel there is something strange going on with the rendered size of
characters when displaying certain Type 1 fonts at certain
resolutions. This may be a defect in the font, a problem with
ghostscript, a problem with my computer & operating system (basically
SuSE Linux 8.2), ...

I have attached a .tar.gz-archive with an example (source & ps) and
output produced with different options to (GNU) gs-7.07 and (AFPL)
gs-8.14.

gs-test.tex - a small LaTeX file to reproduce the PostScript file
gs-test.ps  - the postscript file, contains/uses the CMR12 Type 1 font
              of the American Mathematical Society (AMS)

gs-7.07-test-75.png - the output from gs-7.07, produced with the
	      command line:

              gs-7.07 -sDEVICE=x11alpha -r75 -dDEVICEWIDTH=300 \
		      -dDEVICEHEIGHT=100 -dQUIET -dSAFER gs-test.ps

	      and captured from screen.  Note: my screen resolution is

% xdpyinfo |grep resolution:
  resolution:    75x75 dots per inch

gs-test-r75.png and
gs-test-r72.png - the corresponding output from gs-8.14, produced with
		  the command line:

		  gs-8.14 -sDEVICE=x11alpha -r75 -dDEVICEWIDTH=300 \
			  -dDEVICEHEIGHT=100 -dQUIET -dSAFER gs-test.ps

		  and with -r72, respectively.

Note that in the example gs-test-r75.png, where the target resolution
matches the screen resolution, some characters are taller than others;
it looks really ugly.  The ugly result persists for resolutions in the
range 73..76, while for -r77 it again looks quite ok, similar to -r72.

Can anybody reproduce this?  If so, any explanations?  If not, what
might I be doing wrong?

Cheers,
-Harald

-------------- next part --------------
A non-text attachment was scrubbed...
Name: gs-test.tar.gz
Type: application/gzip
Size: 12547 bytes
Desc: not available
Url : /pipermail/bug-gs/attachments/20040312/daa85d0f/gs-test.tar.bin