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@@ -1,3 +1,38 @@ +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 |