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diff --git a/gs/doc/News.htm b/gs/doc/News.htm index d2dade150..90adb756a 100644 --- a/gs/doc/News.htm +++ b/gs/doc/News.htm @@ -56,8 +56,14 @@ overview</a>. <h3><a name="Version7.30"></a>Version 7.30 (2002-09-07)</h3> -<p>This is an alpha testing release of the new DeviceN implementation. In addition, there have -been numerous bug fixes and major changes to the pdfwrite device. +<p> +This is an alpha testing release of the new DeviceN +implementation. In addition, there have been numerous bug fixes and +further cleanup in the pdfwrite device. + +<p> +Unfortunately, documentation for the DeviceN changes was not available +in time for this release. <p> The following SourceForge bug numbers were open at the time of the last release: @@ -166,9 +172,36 @@ The following SourceForge bug numbers were open at the time of the last release: 605200, 605830. +<p> +In addition, a significant number of regressions remain. See the <a +href="http://www.ghostscript.com/pipermail/gs-regression/2002-September/thread.html">archives</> +of the regression report for more details. + <h3><a name="7.30_Incompatible_changes"></a>Incompatible changes</h3> +<p> +A number of DeviceN changes can cause incompatibility. They are +summarized below. + <pre> +* gx_color_index may now be 32 or 64 bits, determined at compile time. + +* The gx_device_color_info field has been updated to include + significantly more information about the encoding from colors in the + process color model to gx_color_index colors. New fields include: + polarity, gray_index, separable_and_linear, comp_shift, and comp_bits. + Devices are strongly encouraged to set these new fields correctly. + See gxdevcli.h for more information. + +* Some existing device procedures for color mapping have changed. + map_rgb_color now takes a cv[] array rather than separate red, green, + and blue scalar color values, and similarly for map_cmyk_color. + +* New device procedures: get_color_mapping_procs, get_color_comp_index, + encode_color, decode_color. These device procedures are required for + devices defining additional colorant planes, and may be desirable for + finer control over color mapping. See gxdevcli.h and gxcmap.c for + more information. </pre> <!-- [2.0 end contents] ==================================================== --> |