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@@ -1,3 +1,94 @@ +Release 1.4.4 (2007-04-13 Carl Worth <cworth@cworth.org>) +========================================================= +This is the second update release in cairo's stable 1.4 series. It +comes just less than a month after 1.4.2. The changes since 1.4.2 +consist primarily of bug fixes, but also include at least one +optimization. See below for details. + +Of all the work that went into the 1.4.4 release + +There have been lots of individuals doing lots of great work on cairo, +but two efforts during the 1.4.4 series deserve particular mention: + +Internal cleanup of error handling, (Chris Wilson) +-------------------------------------------------- +Chris contributed a tremendous series of patches (74 patches!) to +improve cairo's handling of out-of-memory and other errors. He began +by adding gcc's warn_unused_attribute to as many functions as +possible, and then launched into the ambitious efforts of adding +correct code to quiet the dozens of resulting warnings. + +Chris also wrote a custom valgrind skin to systematically inject +malloc failures into cairo, and did all the work necessary to verify +that cairo's performance test suite runs to completion without +crashing. + +The end result is a much more robust implementation. Previously, many +error conditions would have gone unnoticed and would have led to +assertion failures, segmentation faults, or other harder-to-diagnose +problems. Now, more than ever, cairo should cleanly let the user know +of problems through cairo_status and other similar status +functions. Well done, Chris! + +More malloc reduction, (Mathias Hasselmann) +------------------------------------------- +After 1.4.0, Behdad launched an effort to chase down excessive calls +to malloc within the implementation of cairo. He fixed a lot of +malloc-happy objects for 1.4.2, but one of the worst offenders, +(pixman regions), was left around. Mathias contributed an excellent +series of 15 patches to finish off this effort. + +The end result is a cairo that calls malloc much less often than it +did before. Compared to 1.4.2, 55% of the calls to malloc have been +eliminate, (and 60% have been eliminated compared to 1.4.0). Well +done, Mathias! + +Other improvements since 1.4.2 +------------------------------ +• Centralize mutex declarations (will reduce future build breaks), + (Chris Wilson) + +• Reduce malloc by caching recently freed pattern objects (Chris + Wilson) + +• Fix some broken composite operations (David Reveman) + https://bugs.freedesktop.org/show_bug.cgi?id=5777 + +Backend-specific fixes +---------------------- +PDF: + • Use TJ operator for more compact representation of glyphs (Adrian + Johnson) + + • Fix glyph positioning bug when glyphs are not horizontal + http://lists.freedesktop.org/archives/cairo/2007-April/010337.html + +win32: + • Fix crash when rendering with bitmap fonts (Carl Worth) + https://bugzilla.mozilla.org/show_bug.cgi?id=376498 + +xlib: + • Turn metrics-hinting on by default (Behdad Esfahbod) + + • Fix edge-effect problem with transformed images drawn to xlib + (Behdad Esfahbod) + https://bugs.freedesktop.org/show_bug.cgi?id=10508 + + • Avoid dereferencing a NULL screen. (Chris Wilson) + https://bugs.freedesktop.org/show_bug.cgi?id=10517 + +Quartz/ATSUI: + • Fix scaling of glyph surfaces + (Brian Ewins) + https://bugs.freedesktop.org/show_bug.cgi?id=9568 + + • Fix compilation failure when both xlib and quartz enabled + (Brian Ewins) + + • Fix rounding bug leading to incorrectly positioned glyphs + (Robert O'Callahan) + https://bugs.freedesktop.org/show_bug.cgi?id=10531 + Release 1.4.2 (2007-03-19 Carl Worth <cworth@cworth.org>) ========================================================= This is the first update release in cairo's stable 1.4 series. It |