53606 - Mozilla doesn't support CSS gamma correction

Status: VERIFIED DUPLICATE of bug 53597

(Core :: Layout, defect, P3)

Description

[Karl Ove Hufthammer]

From bug #45008:

[marlon bishop]
For PNG - there's a problem with Mozilla's gamma correction algorithm too, in
addition to the trns problem.  Then the fact that CSS specified colors are not
gamma corrected which precludes us from using PNG in a skin.  You can never
match colors properly without the same gamma correction everywhere.

From the CSS 2 rec.:

"Conforming user agents may limit their color-displaying efforts to performing 
a gamma-correction on them. sRGB specifies a display gamma of 2.2 under 
specified viewing conditions. User agents should adjust the colors given in CSS 
such that, in combination with an output device's "natural" display gamma, an 
effective display gamma of 2.2 is produced. See the section on gamma correction 
for further details. Note that only colors specified in CSS are affected; e.g., 
images are expected to carry their own color information."

"For information about gamma issues, please consult the the Gamma Tutorial in 
the PNG specification ([PNG10])."

Comment 1

[tor]

*** This bug has been marked as a duplicate of 53597 ***

Comment 2

[Hixie (not reading bugmail)]

vrfy dupl; please search more thoroughly next time you file a bug! :-)