19539 - 32-bit PNGs with 8-bit alpha are treated as 1-bit alpha

Status: VERIFIED DUPLICATE of bug 3013

(Core :: Graphics: ImageLib, enhancement, P3)

Description

[the_olo]

Mozilla treats 32-bit PNG images (8-bit alpha channel) as if they had
1-bit alpha channel (binary transparency, as in GIF format).
That's more like a missing feature than a bug, but webmasters have been waiting
for ages to get full 8-bit alpha channel support in WWW browsers (binary
transparency model gives jerky pixels on the decal image's edges)
See the URL above, http://sudety/pnghtml/index.html and
http://www.cdrom.com/pub/png/ for more info on PNG and its various transparency
modes.

Comment 1

[Eli Goldberg]

Reassigning to Greg, presumably to resolve as dupe.

Comment 2

[Greg Roelofs]

Note that the URL is invalid; you might wish to append a fully qualified one to
bug 3013.

Greg

*** This bug has been marked as a duplicate of 3013 ***

Comment 3

[Eli Goldberg]

Verifying as duplicate. Thanks, Greg.

Unsure what the URL the_olo meant to submit, so I'll defer to him. (simply adding
www & com doesn't make it work.)