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Any pixmap writers that can handle data with an alpha plane
should accept that data in premultiplied form, and write it out
appropriately for the file format.
This avoids the need to unpremultiply data in mudraw, and solves
the issue we were seeing where we want the png writer to be able
to cope with premultiplied data (such as for the debug blending
routines) and unpremultiplied data (such as that given after
mudraw has unpremultiplied the data).
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Closing flushes output and may throw exceptions.
Dropping frees the state and never throws exceptions.
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Don't mess with conditional compilation with LARGEFILE -- always expose
64-bit file offsets in our public API.
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Incorporates fixes from Michael.
Rather than specifically giving it rgb and cmyk values,
separations now include the colorspace. Conversions can
then be done into ANY colorspace we need.
Note, that we maintain the old way of working for the
gproof device.
Also, fix pdf_page_separations to correctly find all separations.
This involves recursively looking through colorspaces, forms
and shadings for colorspaces therein, making sure we don't run
into any circular references.
We do 2 passes, so that we can pick up as many colorants as Separations
as possible. On the second pass we pick up any colorants we missed in
terms of DeviceN spaces. The purpose of this is to try to ensure that
we get as many tint transforms as single input functions as we can.
This may not be important in the grand scheme of things, but seems
neater.
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PSD writer now outputs spot colors. Ensure subtractive
colorspaces are stored with proper polarity. The CMYK
and spot components need to be 255-X in the PSD format
Store PSD format resources using correct Pascal style strings.
Photoshop will fail to open if the the ICC profile resource
name is not in proper format.
(Incorporates fixes from Michael).
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