[devel] Imported from libpng-1.5.0beta25.tar

contrib/pngsuite/README

@@ -6,34 +6,51 @@ pngsuite
 Permission to use, copy, and distribute these images for any purpose and
 without fee is hereby granted.
 
-These 15 images are part of the much larger PngSuite test-set of 
+The 15 "bas*.png" images are part of the much larger PngSuite test-set of 
 images, available for developers of PNG supporting software. The 
 complete set, available at http:/www.schaik.com/pngsuite/, contains 
 a variety of images to test interlacing, gamma settings, ancillary
 chunks, etc.
 
+The "ft*.png" images are "free/libre" replacements for the transparent
+corresponding t*.png images in the PngSuite.
+
 The images in this directory represent the basic PNG color-types:
 grayscale (1-16 bit deep), full color (8 or 16 bit), paletted
 (1-8 bit) and grayscale or color images with alpha channel. You
 can use them to test the proper functioning of PNG software.
 
-    filename      depth type
+    filename       depth type
     ------------ ------ --------------
-    basn0g01.png  1-bit grayscale
-    basn0g02.png  2-bit grayscale
-    basn0g04.png  4-bit grayscale
-    basn0g08.png  8-bit grayscale
-    basn0g16.png 16-bit grayscale
-    basn2c08.png  8-bit truecolor
-    basn2c16.png 16-bit truecolor
-    basn3p01.png  1-bit paletted
-    basn3p02.png  2-bit paletted
-    basn3p04.png  4-bit paletted
-    basn3p08.png  8-bit paletted
-    basn4a08.png  8-bit gray with alpha
-    basn4a16.png 16-bit gray with alpha
-    basn6a08.png  8-bit RGBA
-    basn6a16.png 16-bit RGBA
+    basn0g01.png   1-bit grayscale
+    basn0g02.png   2-bit grayscale
+    basn0g04.png   4-bit grayscale
+    basn0g08.png   8-bit grayscale
+    basn0g16.png  16-bit grayscale
+    basn2c08.png   8-bit truecolor
+    basn2c16.png  16-bit truecolor
+    basn3p01.png   1-bit paletted
+    basn3p02.png   2-bit paletted
+    basn3p04.png   4-bit paletted
+    basn3p08.png   8-bit paletted
+    basn4a08.png   8-bit gray with alpha
+    basn4a16.png  16-bit gray with alpha
+    basn6a08.png   8-bit RGBA
+    basn6a16.png  16-bit RGBA
+
+    ftbbn0g04.png  4-bit grayscale, black bKGD
+    ftbbn2c16.png 16-bit truecolor, black bKGD
+    ftbbn3p08.png  8-bit paletted, black bKGD
+    ftbgn2c16.png 16-bit truecolor, gray bKGD
+    ftbgn3p08.png  8-bit paletted, gray bKGD
+    ftbrn2c08.png  8-bit truecolor, red bKGD
+    ftbwn0g16.png 16-bit gray, white bKGD
+    ftbwn3p08.png  8-bit paletted, white bKGD
+    ftbyn3p08.png  8-bit paletted, yellow bKGD
+    ftp0n0g08.png  8-bit grayscale, opaque
+    ftp0n2c08.png  8-bit truecolor, opaque 
+    ftp0n3p08.png  8-bit paletted, opaque
+    ftp1n3p08.png  8-bit paletted, no bKGD
 
 Here is the correct result of typing "pngtest -m *.png" in
 this directory: