https://bugs.freedesktop.org/show_bug.cgi?id=42092

--- Comment #17 from PT <[email protected]> 2012-04-10 19:11:33 PDT ---
In case it's of some help in identifying the cause of this issue:

On Mac OS 10.7.3, with LibreOffice 3.5.2.2, having deleted the
~/Library/Application Support/LibreOffice directory as suggested in Comment 14,
I started a new Writer document and inserted an SVG diagram using
Insert->Picture->From File..., then produced PDFs in three ways:

A. Via File->Export as PDF..., with "PDF/A-1a" not ticked

B. Via File->Export as PDF..., with "PDF/A-1a" ticked

C. Via File->Print, and using the "Save as PDF" option in OS X's print dialog

In each case, the SVG diagram ends up as an image. Extracting these using the
pdfimages tool reveals that in case A it's actually two separate 96dpi images:
one for colour and one for transparency. In cases B and C, it's a single 720dpi
image with a white background.

(The rendering and antialiasing of the bitmaps in B and C is identical. The
files don't match exactly, though, because the the colour handling is
different, and for some reason the case C bitmap is vertically flipped.)

Hence this confirms Luke's findings in Comment 16, and shows that the printing
routines use the same process for rasterising SVGs as the PDF/A-1a ones.
Obviously it would be preferable if none of these cases did any rasterising.

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