[Gimp-user] Creating a new operation for GEGL

[felipeek2 <forums gimpusers com>]

Hello Øyvind Kolås

Thank you very much for your help! The filter is working now.

Is it possible to manually create/manage threads inside a GEGL operation? This
would improve our filter a bit.

Thanks!
Felipe

> I didn't originally see your email, since it went to the gimp-user
> mailing-list rathern than to gimp-developer or gegl-developer.
>
> For an example of an operation that needs the full input to be
> available to be able to do processing, have a look at
> gegl:stretch-contrast
> https://git.gnome.org/browse/gegl/tree/operations/common/stretch-contrast.c
>
> Worth noting, in particular, is that it sets operation_class->threaded
> to FALSE to opt-out of base classs automated thread parallelization,
> and that it sets the methods get_required_for_output and
> get_cached_region to specify which areas (all) need to be computed for
> input buffers, and what extra data to compute when computing one
> sub-rectangle, (also all).
>
> /pippin - http://pippin.gimp.org/

-- 
felipeek2 (via www.gimpusers.com/forums)