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4bc9f847
编写于
4月 17, 2011
作者:
G
Glenn Randers-Pehrson
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[devel] Updated CHANGES, ANNOUNCE, and pngtest.png to reflect recent changes.
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ANNOUNCE
ANNOUNCE
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CHANGES
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pngtest.png
pngtest.png
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ANNOUNCE
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4bc9f847
...
...
@@ -55,6 +55,25 @@ Version 1.5.3beta03 [April 16, 2011]
was introduced in libpng-1.5.2beta01.
Version 1.5.3beta04 [April 17, 2011]
Updated pngtest.png with the new zlib CMF optimization.
Cleaned up conditional compilation code and of background/gamma handling
Internal changes only except a new option to avoid compiling the
png_build_grayscale_palette API (which is not used at all internally.)
The main change is to move the transform tests (READ_TRANSFORMS,
WRITE_TRANSFORMS) up one level to the caller of the APIs. This avoids
calls to spurious functions if all transforms are disabled and slightly
simplifies those functions. Pngvalid modified to handle this.
A minor change is to stop the strip_16 and expand_16 interfaces from
disabling each other; this allows the future alpha premultiplication
code to use 16-bit intermediate values while still producing 8-bit output.
png_do_background and png_do_gamma have been simplified to take a single
pointer to the png_struct rather than pointers to every item required
from the png_struct. This makes no practical difference to the internal
code.
A serious bug in the pngvalid internal routine 'standard_display_init' has
been fixed - this failed to initialize the red channel and accidentally
initialized the alpha channel twice.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net:
(subscription required; visit
...
...
CHANGES
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4bc9f847
...
...
@@ -3316,6 +3316,24 @@ Version 1.5.3beta03 [April 16, 2011]
was introduced in libpng-1.5.2beta01.
Version 1.5.3beta04 [April 17, 2011]
Updated pngtest.png with the new zlib CMF optimization.
Cleaned up conditional compilation code and of background/gamma handling
Internal changes only except a new option to avoid compiling the
png_build_grayscale_palette API (which is not used at all internally.)
The main change is to move the transform tests (READ_TRANSFORMS,
WRITE_TRANSFORMS) up one level to the caller of the APIs. This avoids
calls to spurious functions if all transforms are disabled and slightly
simplifies those functions. Pngvalid modified to handle this.
A minor change is to stop the strip_16 and expand_16 interfaces from
disabling each other; this allows the future alpha premultiplication
code to use 16-bit intermediate values while still producing 8-bit output.
png_do_background and png_do_gamma have been simplified to take a single
pointer to the png_struct rather than pointers to every item required
from the png_struct. This makes no practical difference to the internal
code.
A serious bug in the pngvalid internal routine 'standard_display_init' has
been fixed - this failed to initialize the red channel and accidentally
initialized the alpha channel twice.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit
...
...
pngtest.png
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