[squeak-dev] GIFs and the Color black

Eric Gade eric.gade at gmail.com
Sun Aug 9 16:46:28 UTC 2020

On Sun, Aug 9, 2020 at 3:25 AM karl ramberg <karlramberg at gmail.com> wrote:

> I think Color r: 0.0 g: 0.0 b: 0.0 was/is reserved for transparency in
> forms with less than 32 bit depth, eg. no alpha channel
> Best,
> Karl

Hi Karl,

Any idea how to find "where" this is set or happens? If I can track it
down, I can compare to Pharo (which doesn't seem to have the issue I'm
describing) and see how they deal with it.

For anyone else interested in the problem / example I posted, I can supply
a changeset that really breaks out the LZW/GIF compression and
decompression stuff so that it's somewhat easier to step through. This is
part of the work I did refactoring the current implementation, which is
hard to follow.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.squeakfoundation.org/pipermail/squeak-dev/attachments/20200809/f16ba1d5/attachment.html>

More information about the Squeak-dev mailing list