[Libreoffice-bugs] [Bug 133254] New: Image is blurry/displaced/wrong size in a .pub/.odg document

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=133254

            Bug ID: 133254
           Summary: Image is blurry/displaced/wrong size in a .pub/.odg
                    document
           Product: LibreOffice
           Version: 7.0.0.0.alpha1+ Master
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Keywords: bibisected, bisected, regression
          Severity: normal
          Priority: medium
         Component: graphics stack
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: baron at caesar.elte.hu
                CC: ilmari.lauhakangas at libreoffice.org,
                    l.lunak at collabora.com
            Blocks: 129062

Created attachment 161105
  --> https://bugs.documentfoundation.org/attachment.cgi?id=161105&action=edit
Sample ODG

This is a skia bug, thus it can be reproduced in Windows, or via the gen
backend in Linux. No issue when not using skia.

The attached ODG was created by saving attachment 99486 (an MS Publisher file)
from bug 69080 as ODG. The format is irrelevant, but the PUB file requires bug
122660's fix to open correctly.

Open the sample, and check the image on the second page.

=> The image is blurry, and possibly incorrectly placed/sized (depending on the
zoom level).

This is a regression, even when using the skia backend, as it was fine ~2 weeks
ago, and exhibits both issues in LO 7.0.0.0.alpha1+
(7daab7859f3b5b4297c45ac1631c68387192a962).
It regressed in two steps, bibisected using repo bibisect-linux-64-6.5. Adding
CC: to Luboš Luňák.

1. Image is blurry.

https://cgit.freedesktop.org/libreoffice/core/commit/?id=fc0bff85f3338cb4fe8f4d42421cb69801cb3abb
author          Luboš Luňák <l.lunak at collabora.com>     2020-05-13 13:08:00
+0200
committer       Luboš Luňák <l.lunak at collabora.com>     2020-05-14 11:57:30
+0200

cache results of Skia's drawTransformedBitmap() (tdf#132438)

2. Image isn't placed/sized correctly.

https://cgit.freedesktop.org/libreoffice/core/commit/?id=1b5bd34d8430690b19fae0d0febfd810b9525ca2
author          Luboš Luňák <l.lunak at collabora.com>     2020-05-13 19:25:15
+0200
committer       Luboš Luňák <l.lunak at collabora.com>     2020-05-14 11:57:49
+0200

cache Skia' drawAlphaBitmap() in raster mode (tdf#104878)


Referenced Bugs:

https://bugs.documentfoundation.org/show_bug.cgi?id=129062
[Bug 129062] [META] Skia library bugs
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