source: rtems-graphics-toolkit/libpng-1.5.12/contrib/pngsuite/README @ 1cb4ff2

Last change on this file since 1cb4ff2 was 1cb4ff2, checked in by Alexandru-Sever Horin <alex.sever.h@…>, on 08/06/12 at 11:43:44

Added libpng-1.5.12 update.

  • Property mode set to 100644
File size: 3.6 KB
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1
2pngsuite
3--------
4(c) Willem van Schaik, 1999, 2011, 2012
5Two images are by Glenn Randers-Pehrson, 2012
6
7Permission to use, copy, modify, and distribute these images for any
8purpose and without fee is hereby granted.
9
10The 15 "bas*.png" images are part of the much larger PngSuite test-set of
11images, available for developers of PNG supporting software. The
12complete set, available at http:/www.schaik.com/pngsuite/, contains
13a variety of images to test interlacing, gamma settings, ancillary
14chunks, etc.
15
16The "ft*.png" images are "free/libre" replacements for the transparent
17corresponding t*.png images in the PngSuite.
18
19The images in this directory represent the basic PNG color-types:
20grayscale (1-16 bit deep), full color (8 or 16 bit), paletted
21(1-8 bit) and grayscale or color images with alpha channel. You
22can use them to test the proper functioning of PNG software.
23
24    filename       depth type
25    ------------ ------ --------------
26    basn0g01.png   1-bit grayscale
27    basn0g02.png   2-bit grayscale
28    basn0g04.png   4-bit grayscale
29    basn0g08.png   8-bit grayscale
30    basn0g16.png  16-bit grayscale
31    basn2c08.png   8-bit truecolor
32    basn2c16.png  16-bit truecolor
33    basn3p01.png   1-bit paletted
34    basn3p02.png   2-bit paletted
35    basn3p04.png   4-bit paletted
36    basn3p08.png   8-bit paletted
37    basn4a08.png   8-bit gray with alpha
38    basn4a16.png  16-bit gray with alpha
39    basn6a08.png   8-bit RGBA
40    basn6a16.png  16-bit RGBA
41
42    ftbbn0g01.png  1-bit grayscale, black bKGD
43    ftbbn0g02.png  2-bit grayscale, black bKGD
44    ftbbn0g04.png  4-bit grayscale, black bKGD
45    ftbbn2c16.png 16-bit truecolor, black bKGD
46    ftbbn3p08.png  8-bit paletted, black bKGD
47    ftbgn2c16.png 16-bit truecolor, gray bKGD
48    ftbgn3p08.png  8-bit paletted, gray bKGD
49    ftbrn2c08.png  8-bit truecolor, red bKGD
50    ftbwn0g16.png 16-bit gray, white bKGD
51    ftbwn3p08.png  8-bit paletted, white bKGD
52    ftbyn3p08.png  8-bit paletted, yellow bKGD
53    ftp0n0g08.png  8-bit grayscale, opaque
54    ftp0n2c08.png  8-bit truecolor, opaque
55    ftp0n3p08.png  8-bit paletted, opaque
56    ftp1n3p08.png  8-bit paletted, no bKGD
57
58Here is the correct result of typing "pngtest -m bas*.png" in
59this directory:
60
61Testing basn0g01.png: PASS (524 zero samples)
62 Filter 0 was used 32 times
63Testing basn0g02.png: PASS (448 zero samples)
64 Filter 0 was used 32 times
65Testing basn0g04.png: PASS (520 zero samples)
66 Filter 0 was used 32 times
67Testing basn0g08.png: PASS (3 zero samples)
68 Filter 1 was used 9 times
69 Filter 4 was used 23 times
70Testing basn0g16.png: PASS (1 zero samples)
71 Filter 1 was used 1 times
72 Filter 2 was used 31 times
73Testing basn2c08.png: PASS (6 zero samples)
74 Filter 1 was used 5 times
75 Filter 4 was used 27 times
76Testing basn2c16.png: PASS (592 zero samples)
77 Filter 1 was used 1 times
78 Filter 4 was used 31 times
79Testing basn3p01.png: PASS (512 zero samples)
80 Filter 0 was used 32 times
81Testing basn3p02.png: PASS (448 zero samples)
82 Filter 0 was used 32 times
83Testing basn3p04.png: PASS (544 zero samples)
84 Filter 0 was used 32 times
85Testing basn3p08.png: PASS (4 zero samples)
86 Filter 0 was used 32 times
87Testing basn4a08.png: PASS (32 zero samples)
88 Filter 1 was used 1 times
89 Filter 4 was used 31 times
90Testing basn4a16.png: PASS (64 zero samples)
91 Filter 0 was used 1 times
92 Filter 1 was used 2 times
93 Filter 2 was used 1 times
94 Filter 4 was used 28 times
95Testing basn6a08.png: PASS (160 zero samples)
96 Filter 1 was used 1 times
97 Filter 4 was used 31 times
98Testing basn6a16.png: PASS (1072 zero samples)
99 Filter 1 was used 4 times
100 Filter 4 was used 28 times
101libpng passes test
102
103Willem van Schaik
104<willem@schaik.com>
105October 1999
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