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1e51e1aaf7
|Approximately 238 bugs have been fixed since version 8.62. 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. | |Incompatible changes | |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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