Hi,

> 1) ...

Agreed.

> 2) A bunch of GIMP filters have become GEGL operations, but names of
> settings need revisiting, defaults need a reality check. Also, value
> range is not necessarily the same thing as the range that should be
> visible in UI, and some variables need a non-linear ("gamma") property
> that can be set.

Some times ago, I tried to keep 
http://wiki.gimp.org/wiki/Hacking:Porting_filters_to_GEGL up-to-date. It mixes 
GIMP plugin's with GEGL' operations, but still contains a lot of comments about 
current states of some GEGL operations.

It's not complete at all and not 100% accurate, but I think this really helps 
to keep track of things that have to be done or at least that have to be 
reviewed. A "WIP" tag without comment means that the operation was never 
reviewed.

It would be great if all remarks that are not directly fixed in GEGL, are 
written in that page, so they don't get forgotten. There or in Bugzilla (but 
there are so many things that the wiki seams easier for now I think).

While 1) needs some knowledge of the problem, 2) is really accessible for 
everybody: pick one operation, try it in GIMP, see if there is anything wrong 
with it, fix some parameters values/names (like in commit 1a0e01e9dd3d7f), add 
a "gamma-correction" toggle if needed (like the "srgb" boolean in over.c), send 
a patch in bugzilla and "done". Possibly add comments about bugs or other wider 
improvement, but that's all.

I hope this will help people willing to get involved and do not hesitate to 
call for help on irc if needed.

Kind regards,

Téo


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