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NEWS: Add notes for 1.6.2 release

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Carl Worth 2008-04-11 09:50:53 -07:00
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Release 1.6.2 (2008-04-11 Carl Worth <cworth@cworth.org>)
=========================================================
The cairo community is pleased (but somewhat sheepish) to announce the
1.6.2 release of the cairo graphics library. This is an update to
yesterday's 1.6.0 release with an important fix to prevent cairo's
PostScript output from crashing some printers. This release also
includes a locking fix for cairo's xlib backend to improve thread
safety. There are no changes beyond these two fixes.
Fix for PostScript printer crash
--------------------------------
Adrian Johnson discovered that cairo 1.6.0 was being a bit hard on
PostScript printers, by changing the font matrix very frequently. This
causes some PostScript interpreters to allocate new font objects every
few glyphs, eventually exhausting available resources. The fix
involves leaving translational components of the font matrix as zero,
so that the PostScript interpreter sees an identical font matrix
repeatedly, and can more easily share internal font object resources.
This fix has been tested to resolve the bugs posted here, (for both
Xerox and Dell printers):
Printing some PDFs from evince is crashing our Xerox printer
http://bugs.freedesktop.org/show_bug.cgi?id=15348
Cairo-generated postscript blocks Dell 5100cn
http://bugs.freedesktop.org/show_bug.cgi?id=15445
Add missing locking in cairo-xlib
---------------------------------
Chris Wilson noticed that cairo 1.6.0 was manipulating an internal
cache of GC object within cairo's Xlib backend without proper
locking. The missing locking could cause failures for multi-threaded
applications. He fixed this in 1.6.2 by adding the missing locks.
Release 1.6.0 (2008-04-10 Carl Worth <cworth@cworth.org>)
=========================================================
The cairo community is quite pleased to announce the 1.6.0 release of