2009年4月28日

[installer 1909] gnu-ghostscript-8.64.0

gnu-ghostscript-8.64.0 出ています。

☆ gnu-ghostscript-8.64.0
http://www.gnu.org/software/ghostscript/
http://ftp.gnu.org/gnu/ghostscript/gnu-ghostscript-8.64.0.tar.bz2
ftp://ftp.gnu.org/gnu/ghostscript/gnu-ghostscript-8.64.0.tar.bz2

Version 8.64.0 main changes:

* Approximately 100 bugs have been fixed since version 8.63.0.
Of particular note in this release are improvements to overprint and spot
color support in documents with transparency, improvements to PDF and PS
output, proper handling of PDF-specific text rendering modes and support
for reading AES-encrypted PDF documents.

* Also improved is handling of CJK text, especially in vertical writing modes,
memory footprint processing some files at high resolution and support for
using the system's default paper size on unix.

* The interpreter's handling of color spaces has been moved from PostScript
code to C.

* A number of the included printer drivers and cups wrappers have been updated
to support a PDF-based workflow. Also fixed are several long-standing bugs
in the pcl drivers with respect to duplex, resolution and paper tray
selection.
* In this release they are one incompatible change:

- In this release the C source files have been split into two new
directories. Interpreter source files are now in psi and the graphics
library and output devices are now in base. Previously everything was
in src. This may cause problems with existing references in external
build files or when applying patches generated against an older version.

Version 8.63.0 main changes:
* Approximately 238 bugs have been fixed since version 8.62.0.
Of particular note are robustness and performance improvements with large
files, invalid PDF, and font handling.
* The major new feature of this release is multithreaded rendering. This can
be requested by passing -dNumRenderingThreads=n on the command line. The
input document is first parsed, and then each page is split into n bands
which are rendered concurrently. This can provide a significant reduction
in processing time on multi-core systems.
* Images are now always interpolated in their source colorspace. This improves
correctness for XPS documents and avoids bypassing the custom color
management callbacks for interpolated images. Interpolation and color
management are both expensive operations, so this affects performance with
large images. The effect can be positive or negative depending on the file
and the target resolution. If performance is a problem, we suggest running
with -dNOINTERPOLATION.

* Support for OpenPrinting Vector devices has been upgraded to version 1.0.

* There are two new devices in this release, both experimental. Behdad Esfahbod
has contributed a cairo output device which uses the cairo graphics library
to generate PDF, SVG, EPS, or PNG files, based on the requested filename
extension. The svgwrite device directly outputs Scalable Vector Graphics,
the W3C XML vector graphics format. Both support only vector art at this
point; text and images will not be represented efficiently.

* 3 incompatible changes in this release:
- The maximum number of color components has been reduced to 8 (from 252)
as a performance improvement. Eight is the largest number commonly used and
the largest number for which we support continuous tone images. Users with
special needs can restore the previous behavior by setting the
GS_CLIENT_COLOR_MAX_COMPONENTS preprocessor symbol to the required number
of components at compile time.

- The -Z: debugging option now uses 'realtime' instead of 'usertime' when
reporting timing information on unix-like systems. This has always been the
case on windows-like systems.

- Obsolete makefiles for the DesqView environment have been removed.

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こがよういちろう


投稿者 xml-rpc : 2009年4月28日 08:57
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