[Cin] possible alpha bug in processing

Phyllis Smith phylsmith2017 at gmail.com
Sat Nov 19 23:29:48 CET 2022


As IgorBeghetto recommended, I checked into GIT the change of 0xff to 0x00
in virtualvconsole.C as Andrew provided in his patch "
0001-background-clear-in-vconsole-must-be-set-to-0.patch". It will be easy
to undo if Igor and his computer, Charlie, find a problem with it.
(Actually I never figured out how to back something out of GIT, I just add
back the original).

Good find by Goat and glad Andrea and IgorBeghetto were able to see that
the correction fixes render using PNG, EXR, and TGA.  (I still wonder what
"Goat" stands for?).

On Thu, Nov 17, 2022 at 1:50 AM Igor BEGHETTO via Cin <
cin at lists.cinelerra-gg.org> wrote:

> I think patch's Andrew would solve MantisBT_0000558 issue
> (https://www.cinelerra-gg.org/bugtracker/view.php?id=558) but I didn't
> try.
> I will try next week end to make a build and doing some tests, I hope.
> Meanwhile other users could test their old Project with to see if the
> patch creates other problems.
> Phyllis could create a commit in GIT only for that patch so, if
> something goes wrong, we can go back easily, or at least, it is what I
> think.
>
> IgorBeg
>
>
> Phyllis wrote:
> > Yes, seems to be a problem, but I have no idea what the repercussions
> > of the patch would be based on the following in the  release notes for
> > September 2020 which says in the Bugs/Issues fixed:
> >   "Alpha is being set to 1 for background color always now – just a
> > missing thing."
>
> Andrew wrote:
> >
> https://git.cinelerra-gg.org/git/?p=goodguy/cinelerra.git;a=blobdiff;f=cinelerra-5.1/cinelerra/virtualvconsole.C;h=3c3fb86f5710e15954c927f358210027cb819ed1;hp=193761b6763a61d11b0b85c8edbb4ec658df2b99;hb=abdff69b9309c7d5cd2ed6ce17dd2e0d85aef9a1;hpb=0b751b07a28e84a721b2bb76083db6629aa26d73
> >
> > i tried to set alpha to 0 (zero) in virtialvconsole and suddently pngs
> > and exrs and tgas got their alpha back!
>
> --
> Cin mailing list
> Cin at lists.cinelerra-gg.org
> https://lists.cinelerra-gg.org/mailman/listinfo/cin
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.cinelerra-gg.org/pipermail/cin/attachments/20221119/0b114025/attachment.htm>


More information about the Cin mailing list