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[libpng17] Updated manual to require png_set_PLTE() to precede png_set_tRNS()

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and png_set_hIST() if either is present.
This commit is contained in:
Glenn Randers-Pehrson
2015-12-01 11:13:44 -06:00
parent cb3402221b
commit c46bd30b51
4 changed files with 30 additions and 25 deletions
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13
libpng-manual.txt
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@@ -1,6 +1,6 @@
libpng-manual.txt - A description on how to use and modify libpng
libpng version 1.7.0beta70 - November 24, 2015
libpng version 1.7.0beta70 - December 1, 2015
Updated and distributed by Glenn Randers-Pehrson
<glennrp at users.sourceforge.net>
Copyright (c) 1998-2015 Glenn Randers-Pehrson
@@ -11,7 +11,7 @@ libpng-manual.txt - A description on how to use and modify libpng
Based on:
libpng versions 0.97, January 1998, through 1.7.0beta70 - November 24, 2015
libpng versions 0.97, January 1998, through 1.7.0beta70 - December 1, 2015
Updated and distributed by Glenn Randers-Pehrson
Copyright (c) 1998-2015 Glenn Randers-Pehrson
@@ -2947,8 +2947,7 @@ Some of the more important parts of the png_info are:
If you call png_set_IHDR(), the call must appear before any of the
other png_set_*() functions, because they might require access to some of
the IHDR settings. The remaining png_set_*() functions can be called
in any order.
the IHDR settings.
If you wish, you can reset the compression_type, interlace_type, or
filter_method later by calling png_set_IHDR() again; if you do this, the
@@ -2961,6 +2960,12 @@ width, height, bit_depth, and color_type must be the same in each call.
(array of png_color)
num_palette - number of entries in the palette
If you call png_set_PLTE(), the call must appear before either of
png_set_tRNS() or png_set_hIST() appears, because they require access
to the palette length.
The remaining png_set_*() functions can be called in any order.
png_set_gAMA(png_ptr, info_ptr, file_gamma);
png_set_gAMA_fixed(png_ptr, info_ptr, int_file_gamma);