** Changed in: pixman (Ubuntu Focal)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1988796
Title:
Incorrect rendering triggered by cairo
** Tags removed: verification-needed
** Tags added: verification-done
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https://bugs.launchpad.net/bugs/1988796
Title:
Incorrect rendering triggered by cairo
Verified fixed with libpixman-1-0 0.38.4-0ubuntu2.
- The test program now reports "OK".
- I also installed the openslide-tools package and visually confirmed that
"openslide-write-png CMU-1.mrxs 2 10 1 1000 1000 out.png" produces
corrupt output with the original package and reasonable
** Tags removed: verification-needed-focal
** Tags added: verification-done-focal
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https://bugs.launchpad.net/bugs/1988796
Title:
Incorrect rendering triggered by cairo
Hello Benjamin, or anyone else affected,
Accepted pixman into focal-proposed. The package will build now and be
available at https://launchpad.net/ubuntu/+source/pixman/0.38.4-0ubuntu2
in a few hours, and then in the -proposed repository.
Please help us by testing this new package. See
The first upload was rejected due to some cruft in my upload. This is a
1.0 format source package and I was dealing with some issues when
handling git (git ubuntu) being considered during the package build.
Thanks for spotting that one, Timo :) I re-uploaded the package.
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https://bugs.launchpad.net/bugs/1988796
Title:
Incorrect rendering triggered by cairo CAIRO_OPERATOR_SATURATE with
subpixel positioning
Status
Thanks. Uploaded!
** Changed in: pixman (Ubuntu Focal)
Status: Triaged => In Progress
** Changed in: pixman (Ubuntu Focal)
Assignee: (unassigned) => Athos Ribeiro (athos-ribeiro)
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Yup, the test program fails without the packages from the PPA and
succeeds once they're installed.
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https://bugs.launchpad.net/bugs/1988796
Title:
Incorrect rendering
Thanks, Benjamin!
I uploaded a patched package to the following PPA:
https://launchpad.net/~athos-ribeiro/+archive/ubuntu/lp1988796-pixman
Please, test it to ensure everything works as expected before we proceed
with the SRU process here.
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** Description changed:
+ [ Impact ]
+
+ OpenSlide (libopenslide0 in Ubuntu) uses Cairo as its rendering backend,
+ always with CAIRO_OPERATOR_SATURATE and sometimes with subpixel
+ positioning (when reading certain file formats), and Cairo in turn
+ invokes this code. As a result, some slides
** Patch added: "Updated debdiff with dep3 headers added"
https://bugs.launchpad.net/ubuntu/+source/pixman/+bug/1988796/+attachment/5623244/+files/2-0.38.4-0ubuntu2.debdiff
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[ Impact ]
OpenSlide (libopenslide0 in Ubuntu) uses Cairo as its rendering backend,
always with CAIRO_OPERATOR_SATURATE and sometimes with subpixel
positioning (when reading certain file formats), and Cairo in turn
invokes this code. As a result, some slides incorrectly render with
large blank
Hi Benjamin,
Thanks for taking the time to provide this fix!
Would you be willing to file the SRU template [1] for this bug so we can
proceed here?
It would also be nice to add dep3 headers [2] to that patch.
[1] https://wiki.ubuntu.com/StableReleaseUpdates#SRU_Bug_Template
[2]
The attachment "1-0.38.4-0ubuntu2.debdiff" seems to be a debdiff. The
ubuntu-sponsors team has been subscribed to the bug report so that they
can review and hopefully sponsor the debdiff. If the attachment isn't a
patch, please remove the "patch" flag from the attachment, remove the
"patch" tag,
This is a debdiff for the focal version of pixman, 0.38.4-0ubuntu1.
I've built and installed this and verified that the test case now
reports "OK".
** Patch added: "1-0.38.4-0ubuntu2.debdiff"
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