bug#32469: 26.1; windows 10 emacs doesn't draw *some* pngs correctly

[Stefan Kangas]

Hi James,

The below discussion was in July.  Did you find any time to check if
this is still an issue on the Emacs trunk?

Best regards,
Stefan Kangas

james@jojojames.com writes:

> It’ll take me a while to check for this.
>
>> On Jul 12, 2019, at 7:52 PM, Lars Ingebrigtsen <larsi@gnus.org> wrote:
>> 
>> James Nguyen <james@jojojames.com> writes:
>> 
>>> https://github.com/jojojames/emacs-windows-png-repro
>>> 
>>> Added some screenshots here^
>>> 
>>> Pngs created using imagemagick from svg files do not display correctly
>>> in Emacs (they do not display transparency correctly). In the linked
>>> repro, the images are surrounded with a yellow/orange instead of 
>>> transparency.
>>> 
>>> The images display with transparency in other Windows programs I
>>> tried. (Web browser, File browser, default image viewer in Windows.)
>>> These images also display correctly on OSX (and its various
>>> applications, including Emacs).
>>> 
>>> After playing around with the imagemagick setting, it seems prefixing
>>> PNG32: to the output file makes the image compatible with Windows Emacs.
>> 
>> The image handling has been reworked substantially over the last few
>> months -- are you still seeing this on the Emacs trunk?
>> 
>>> In GNU Emacs 27.0.50 (build 1, x86_64-w64-mingw32)
>>> of 2018-05-03 built on CIRROCUMULUS
>> 
>> -- 
>> (domestic pets only, the antidote for overdose, milk.)
>>   bloggy blog: http://lars.ingebrigtsen.no