Re: Bugreport from mozilla bug database

At 02:46 PM 7/2/2004 -0400, Glenn Randers-Pehrson <glennrp> wrote:
>Alexander Opitz wrote:
>> 
>> Hi,
>> 
>> I think that needs resolve:
>> 
>> ------- Additional Comments From [email protected]  2004-07-02 04:02
>> PDT -------
>> Found the webpage again that I was referring to in comment #457:
>> http://entropymine.com/jason/testbed/pngtrans/
>> When the MNG decoder is used for PNGs, Mozilla displays the "RGB binary
>> transparency" and "Grayscale binary transparency" examples with a black
>> background.
>
>I also see this bug, when building mozilla with libmng-1.0.8a in the
>MNG_BUILD_MOZ_MNG configuration and using libmng to supply PNG
>support.

I've also verified that the transparency is handled incorrectly with
the MNG_BUILD_RAW_MNG and MNG_BUILD_FULL_MNG configurations.

This indicates that the problem is not due to the removal of
16-bit support (present in MNG_BUILD_RAW_MNG) nor in my footprint
optimization work (absent in MNG_BUILD_RAW_MNG and present in
MNG_BUILD_FULL_MNG configuration).

A couple of the tests show different background colors for the *RAW*
configuration, which I suppose is due to difference in 16-bit support.

To add a little interest, I'm seeing a seg violation when I close mozilla
after viewing Jason's test page with the MNG_BUILD_FULL_MNG configuration
and not with the other configurations.  I suppose that would be due to
some memory bookkeeping error.

Is anyone working on this besides me?

Glenn


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