Bug#995681: poppler-utils: pdftocairo generates incorrect png with -antialias best

[Erik Saule]

Package: poppler-utils
Version: 20.09.0-3.1
Severity: normal
X-Debbugs-Cc: esaule at uncc.edu

Dear Maintainer,

When running pdftocairo using :

pdftocairo -png -antialias best beamer.pdf

the output is "weird". Shapes appear to be correct, but fonts are
messed up in a way I don't quite understand. I tried it with multiple
pdfs coming from latex beamer and from latex article.

Not specifying -antialias gives a result that looks correct.

(Attaching the pdf file and the obtained PNG output for reference.)

-- System Information:
Debian Release: 11.0
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 5.10.0-8-amd64 (SMP w/12 CPU threads)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages poppler-utils depends on:
ii  libc6          2.31-13
ii  libcairo2      1.16.0-5
ii  libfreetype6   2.10.4+dfsg-1
ii  liblcms2-2     2.12~rc1-2
ii  libpoppler102  20.09.0-3.1
ii  libstdc++6     10.2.1-6

poppler-utils recommends no packages.

poppler-utils suggests no packages.

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