diff options
Diffstat (limited to 'KNOWNBUG')
| -rw-r--r-- | KNOWNBUG | 66 |
1 files changed, 5 insertions, 61 deletions
@@ -1,65 +1,9 @@ -Known bugs and suggested enhancements in libpng-1.0.8 +Known bugs in libpng-1.0.9 -0: November 3, 2000 -- BUG -- incorrect iCCP chunk is written +1: January 16, 2001 -- BUG -- progressive reading narrow interlaced PNGs - The compression_type byte in the iCCP chunk written by libpng is - usually incorrect. - - Status: Fixed in libpng-1.0.9beta1 - -1. October 12, 2000 -- BUG -- pngtest fails - - The three WRITEFILE calls in pngtest.c are incorrect. They must be - changed to read - - WRITEFILE((png_FILE_p)png_ptr->io_ptr, data, length, check); - WRITEFILE(io_ptr, near_data, length, check); - WRITEFILE(io_ptr, buf, written, err); - -2. August 28, 2000 -- BUG -- pnggccrd.c - - The interlacing() function has still not been fully converted and - will not compile under gcc-2.95.2; it is currently ifdef'ed out. - - STATUS: Fixed in libpng-1.0.9. There were also bugs in pngvcrd.c - which have been fixed. The replacement files are available at the - PNG web site (http://www.libpng.org/pub/png). - -3. March 15, 1998 -- OPTIMIZATION -- Kevin Bracey - - Loops need to be optimized everywhere - - Make them count down instead of up -- Kevin Bracey - - Optimizing compilers don't need this, and making - the change would be error prone -- Tom Lane, Glenn R-P - - Question whether i-- or --i is better. - - STATUS: Under investigation, postponed until after - libpng-2.0.0. About 160 loops will be turned around - in libpng-2.0.x betaxx, for testing. - -4. July 4, 1998 -- ENHANCEMENT -- Glenn R-P - - libpng-1.0.5 and earlier transform colors to gamma=1.0 space for - merging with background, and then back to the image's gamma. The - bit_depth of the intermediate (gamma=1.0) representation is probably - not sufficient. In the typical gamma=1/2.2 situation, the linear - pixels need about 4 more bits than the gamma-encoded ones, to avoid - loss of precision. A similar situation exists with the rgb_to_gray - operation. - - STATUS: under development. - -5. September 1999 -- ENHANCEMENT -- - - It should be possible to use libpng without floating-point arithmetic. - - STATUS: Under investigation, implementation postponed until after - libpng-2.0.0. - - Much of this was completed in libpng-1.0.6, but gamma compensation - is not yet done in fixed-point arithmetic. + A crash occurs in Mozilla when reading a 2x533 interlaced RGB image. + Status: Under investigation. It appears that pngpread.c is not + taking care to skip empty passes. |