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[devel] Implementation of premultiplied alpha support: png_set_alpha_mode

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(libpng-manual.txt still to be updated, see png.h for documentation.)
This commit is contained in:
John Bowler
2011-05-07 21:00:28 -05:00
committed by Glenn Randers-Pehrson
parent af855e415d
commit d273ad2d0f
12 changed files with 2128 additions and 607 deletions
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4
scripts/pnglibconf.dfa
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@@ -311,11 +311,13 @@ option READ_BGR requires READ_TRANSFORMS
option READ_SWAP requires READ_TRANSFORMS READ_16BIT
option READ_PACKSWAP requires READ_TRANSFORMS
option READ_INVERT requires READ_TRANSFORMS
option READ_BACKGROUND requires READ_TRANSFORMS
option READ_BACKGROUND requires READ_TRANSFORMS enables READ_STRIP_ALPHA
option READ_16_TO_8 requires READ_TRANSFORMS
option READ_FILLER requires READ_TRANSFORMS
option READ_GAMMA requires READ_TRANSFORMS enables READ_gAMA
option READ_GRAY_TO_RGB requires READ_TRANSFORMS
option READ_ALPHA_MODE requires READ_TRANSFORMS enables READ_GAMMA
option READ_SWAP_ALPHA requires READ_TRANSFORMS
option READ_INVERT_ALPHA requires READ_TRANSFORMS
option READ_STRIP_ALPHA requires READ_TRANSFORMS

1
scripts/pnglibconf.h.prebuilt
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@@ -69,6 +69,7 @@
#define PNG_PROGRESSIVE_READ_SUPPORTED
#define PNG_READ_16BIT_SUPPORTED
#define PNG_READ_16_TO_8_SUPPORTED
#define PNG_READ_ALPHA_MODE_SUPPORTED
#define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
#define PNG_READ_BACKGROUND_SUPPORTED
#define PNG_READ_BGR_SUPPORTED

2
scripts/symbols.def
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@@ -232,3 +232,5 @@ EXPORTS
png_set_text_compression_strategy @224
png_set_text_compression_window_bits @225
png_set_text_compression_method @226
png_set_alpha_mode @227
png_set_alpha_mode_fixed @228