FS#22442 - Firefox shows alpha png wrong

Attached to Project: Arch Linux
Opened by Jan Drábek (repli2dev) - Saturday, 15 January 2011, 07:59 GMT
Last edited by Ionut Biru (wonder) - Sunday, 24 April 2011, 14:47 GMT
Task Type Bug Report
Category Packages: Extra
Status Closed
Assigned To Ionut Biru (wonder)
Architecture x86_64
Severity Medium
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Description: PNG picture with alpha transparency displays wrong. EG. Background which is supposed to be transparent has diffrent color of the color on which is the picture placed on.




Additional info:
* firefox-3.6.13-1
* Chromium, midori etc. shows it correctly (also I tried browsershots and they should it also correctly).
   firefox_chromium.png (15.1 KiB)
This task depends upon

Closed by  Ionut Biru (wonder)
Sunday, 24 April 2011, 14:47 GMT
Reason for closing:  Not a bug
Comment by Thomas Dziedzic (tomd123) - Sunday, 16 January 2011, 04:55 GMT
Works for me http://www.w3.org/Graphics/PNG/inline-alpha.html
Can you please give the address of the specific site which doesn't work?
Comment by Jan Drábek (repli2dev) - Sunday, 16 January 2011, 08:08 GMT
This test don't work for me neither. However it is only SMALL change of color (watch letter G on given image).

Other webpages I have noticed this problem: leganto.cz (logo) and jandrabek.cz (logo)
   Snímek obrazovky-1.png (125 KiB)
Comment by Ionut Biru (wonder) - Sunday, 16 January 2011, 10:54 GMT
do you have xulrunner from our repos and from aur(with system cairo support enabled) ?

stock packages from the repos work very well. I see the letter colors exactly as in chromium
Comment by Jan Drábek (repli2dev) - Sunday, 16 January 2011, 10:57 GMT
No, I use up to date packages from extra.

(I even tried to download mozilla's static build and the behaviour was exactly the same.)
Comment by Ionut Biru (wonder) - Sunday, 16 January 2011, 10:58 GMT
ok, so is not our bug.

https://bugzilla.mozilla.org/
Comment by Jan de Groot (JGC) - Monday, 17 January 2011, 17:37 GMT
You are aware of the fact that most PNG images include color profile information? Not every browser respects those profiles, but Internet Explorer (all versions) and recent versions of Firefox (3.6, maybe 3.5 also) do. To get rid of those color differences, you should strip color profile information from PNG images using pngcrush.
Comment by Andrea Scarpino (BaSh) - Wednesday, 23 March 2011, 09:31 GMT
status with firefox 4?
Comment by Jan Alexander Steffens (heftig) - Thursday, 31 March 2011, 09:58 GMT
It still applies. I'll assume this is the color profile problem, which is not a bug.

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