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| 2 | pngsuite
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| 3 | --------
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| 4 | Copyright (c) Willem van Schaik, 1999, 2011, 2012
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| 5 | Two images (ftbbn0g01.png and ftbbn0g02.png) are by Glenn Randers-Pehrson, 2012
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| 6 |
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| 7 | Permission to use, copy, modify, and distribute these images for any
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| 8 | purpose and without fee is hereby granted.
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| 9 |
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| 10 | The 15 "bas*.png" images are part of the much larger PngSuite test-set of
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| 11 | images, available for developers of PNG supporting software. The
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| 12 | complete set, available at http:/www.schaik.com/pngsuite/, contains
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| 13 | a variety of images to test interlacing, gamma settings, ancillary
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| 14 | chunks, etc.
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| 15 |
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| 16 | The "ft*.png" images are "free/libre" replacements for the transparent
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| 17 | corresponding t*.png images in the PngSuite.
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| 18 |
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| 19 | The "i*.png" images are the same images, but interlaced.
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| 20 |
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| 21 | The images in this directory represent the basic PNG color-types:
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| 22 | grayscale (1-16 bit deep), full color (8 or 16 bit), paletted
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| 23 | (1-8 bit) and grayscale or color images with alpha channel. You
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| 24 | can use them to test the proper functioning of PNG software.
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| 25 |
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| 26 | filename depth type
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| 27 | ------------ ------ --------------
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| 28 | basn0g01.png 1-bit grayscale
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| 29 | basn0g02.png 2-bit grayscale
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| 30 | basn0g04.png 4-bit grayscale
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| 31 | basn0g08.png 8-bit grayscale
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| 32 | basn0g16.png 16-bit grayscale
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| 33 | basn2c08.png 8-bit truecolor
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| 34 | basn2c16.png 16-bit truecolor
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| 35 | basn3p01.png 1-bit paletted
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| 36 | basn3p02.png 2-bit paletted
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| 37 | basn3p04.png 4-bit paletted
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| 38 | basn3p08.png 8-bit paletted
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| 39 | basn4a08.png 8-bit gray with alpha
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| 40 | basn4a16.png 16-bit gray with alpha
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| 41 | basn6a08.png 8-bit RGBA
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| 42 | basn6a16.png 16-bit RGBA
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| 43 |
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| 44 | ftbbn0g01.png 1-bit grayscale, black bKGD
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| 45 | ftbbn0g02.png 2-bit grayscale, black bKGD
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| 46 | ftbbn0g04.png 4-bit grayscale, black bKGD
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| 47 | ftbbn2c16.png 16-bit truecolor, black bKGD
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| 48 | ftbbn3p08.png 8-bit paletted, black bKGD
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| 49 | ftbgn2c16.png 16-bit truecolor, gray bKGD
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| 50 | ftbgn3p08.png 8-bit paletted, gray bKGD
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| 51 | ftbrn2c08.png 8-bit truecolor, red bKGD
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| 52 | ftbwn0g16.png 16-bit gray, white bKGD
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| 53 | ftbwn3p08.png 8-bit paletted, white bKGD
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| 54 | ftbyn3p08.png 8-bit paletted, yellow bKGD
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| 55 | ftp0n0g08.png 8-bit grayscale, opaque
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| 56 | ftp0n2c08.png 8-bit truecolor, opaque
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| 57 | ftp0n3p08.png 8-bit paletted, opaque
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| 58 | ftp1n3p08.png 8-bit paletted, no bKGD
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| 59 |
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| 60 | Here is the correct result of typing "pngtest -m bas*.png" in
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| 61 | this directory:
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| 62 |
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| 63 | Testing basn0g01.png: PASS (524 zero samples)
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| 64 | Filter 0 was used 32 times
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| 65 | Testing basn0g02.png: PASS (448 zero samples)
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| 66 | Filter 0 was used 32 times
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| 67 | Testing basn0g04.png: PASS (520 zero samples)
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| 68 | Filter 0 was used 32 times
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| 69 | Testing basn0g08.png: PASS (3 zero samples)
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| 70 | Filter 1 was used 9 times
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| 71 | Filter 4 was used 23 times
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| 72 | Testing basn0g16.png: PASS (1 zero samples)
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| 73 | Filter 1 was used 1 times
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| 74 | Filter 2 was used 31 times
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| 75 | Testing basn2c08.png: PASS (6 zero samples)
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| 76 | Filter 1 was used 5 times
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| 77 | Filter 4 was used 27 times
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| 78 | Testing basn2c16.png: PASS (592 zero samples)
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| 79 | Filter 1 was used 1 times
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| 80 | Filter 4 was used 31 times
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| 81 | Testing basn3p01.png: PASS (512 zero samples)
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| 82 | Filter 0 was used 32 times
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| 83 | Testing basn3p02.png: PASS (448 zero samples)
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| 84 | Filter 0 was used 32 times
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| 85 | Testing basn3p04.png: PASS (544 zero samples)
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| 86 | Filter 0 was used 32 times
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| 87 | Testing basn3p08.png: PASS (4 zero samples)
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| 88 | Filter 0 was used 32 times
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| 89 | Testing basn4a08.png: PASS (32 zero samples)
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| 90 | Filter 1 was used 1 times
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| 91 | Filter 4 was used 31 times
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| 92 | Testing basn4a16.png: PASS (64 zero samples)
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| 93 | Filter 0 was used 1 times
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| 94 | Filter 1 was used 2 times
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| 95 | Filter 2 was used 1 times
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| 96 | Filter 4 was used 28 times
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| 97 | Testing basn6a08.png: PASS (160 zero samples)
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| 98 | Filter 1 was used 1 times
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| 99 | Filter 4 was used 31 times
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| 100 | Testing basn6a16.png: PASS (1072 zero samples)
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| 101 | Filter 1 was used 4 times
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| 102 | Filter 4 was used 28 times
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| 103 | libpng passes test
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| 104 |
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| 105 | Willem van Schaik
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| 106 | <willem at schaik.com>
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| 107 | October 1999
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