evince badly mis-renders gradients in pdf

[sam tygier]

Binary package hint: evince

the poor rendering of background gradients in
http://emetral.web.cern.ch/emetral/USPAS09course/SpaceCharge.pdf
makes it mostly unreadable.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: evince 2.32.0-0ubuntu8
ProcVersionSignature: Ubuntu 2.6.37-12.26-generic 2.6.37
Uname: Linux 2.6.37-12-generic x86_64
Architecture: amd64
Date: Sun Jan 30 12:25:06 2011
KernLog:
 Jan 30 12:18:44 ubuntu kernel: [ 0.020000] Security Framework initialized
 Jan 30 12:18:44 ubuntu kernel: [ 0.020000] AppArmor: AppArmor initialized
 Jan 30 12:18:44 ubuntu kernel: [ 0.275442] AppArmor: AppArmor Filesystem Enabled
 Jan 30 12:18:44 ubuntu kernel: [ 0.297430] type=2000 audit(1296389902.290:1): initialized
LiveMediaBuild: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20110127)
ProcEnviron:
 LANGUAGE=en_US.UTF-8:en
 LANG=en_US.UTF-8
 LC_MESSAGES=en_AG.utf8
 SHELL=/bin/bash
ProcVersionSignature_: Ubuntu 2.6.37-12.26-generic 2.6.37
SourcePackage: evince

[bbordwell (benbordwell)]

Created attachment 42722
Rendered using poppler/evince

The gradients on this PDF do not get rendered correctly: http://emetral.web.cern.ch/emetral/USPAS09course/SpaceCharge.pdf

I am forwarding this downstream bug:https://bugs.launchpad.net/ubuntu/+source/poppler/+bug/710137

[bbordwell (benbordwell)]

Created attachment 42723
rendered using Acrobat Reader

[sam tygier (samtygier)]

same file in acroread

[Albert Astals Cid (aacid)]

Seems to be cairo backend specific

[bbordwell (benbordwell)]

Evince uses the poppler library to render PDF files.

[Carlos Garcia Campos (carlosgc)]

(In reply to comment #2)
> Seems to be cairo backend specific

I can't reproduce it, I see the same output than splash, which is different than the acroread screenshot (the background color).

[Albert Astals Cid (aacid)]

I do get an empty white background with cairo and a purple-ish one (yes a bit different from Acroread it seems with splash)

Ask anything you might want me to do to help see why i get nothing in cairo.

[Carlos Garcia Campos (carlosgc)]

Maybe it depends on pixman/cairo versions, I'm currently using git master for both.

[Albert Astals Cid (aacid)]

I'm using
  pixman 0.20.2
  cairo 1.10.2
that i think are the latest versions. If you are sure this is a pixmap/cairo problem and not ours you should mark the bug as resolved->notourbug

[Carlos Garcia Campos (carlosgc)]

No, I'm not sure.

[sam tygier (samtygier)]

in oneiric, evince 3.0.2, Using poppler/cairo (0.16.4).
no background is rendered, see attached

[sam tygier (samtygier)]

still the same in 3.1.90.1 with poppler/cairo (0.16.7)

[madbiologist (me-again)]

No background rendered in Ubuntu 12.04 "Precise Pangolin" beta 1 either.

Packages: evince 3.3.90-0ubuntu2
                   libpoppler19 0.18.4-1ubuntu1
                   libcairo2 1.10.2-6.1ubuntu2

[Germán Poo-Caamaño (gpoo)]

Before building cairo 1.12, I could reproduce this bug (with a white
background) After building poppler on cairo 1.12, the PDF looks fine
to me.

Probably an issue with an old cairo version.

[madbiologist (me-again)]

The background gradient renders correctly on Ubuntu 12.10 "Quantal Quetzal". It's purple instead of blue though.

Pacakges: evince 3.6.0-0ubuntu2
              libpoppler26 0.20.1-1ubuntu1
              libcairo2 1.12.2-1ubuntu2.1

[madbiologist (me-again)]

Adobe Reader 9.3.0 on Windows also renders the background gradient in purple. Closing bug.

[Albert Astals Cid (aacid)]

So should we close this one?

[Adrian Johnson (ajohnson-redneon)]

Works for me with cairo 1.12. Looks like a cairo bug that has been fixed.