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Layers Projection using GEGL

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Layers Projection using GEGL Luidnel MAIGNAN 05 Oct 19:04
  Layers Projection using GEGL Michael Natterer 05 Oct 22:21
Luidnel MAIGNAN
2008-10-05 19:04:09 UTC (about 16 years ago)

Layers Projection using GEGL

Hello,

A patch that allows gimp to use gegl for projection has been posted at http://bugzilla.gnome.org/attachment.cgi?id=119910. Even if the code is rough, and some feature are not included (but easy to include), it shows that projection using gegl is ready to be included for 2.8, IMHO.

For the moment everything is in a single function, but a cleaner approach could be to make each class (Layer, Mask, Channel) manage its own related subgraph, and the image could combine every subgraph in a persistant way to reflect to layer stack.

Maybe some more things needs to be kept in mind during the implementation, or i'm making wrong assumptions on something, so your feedbacks are welcomed.

Regards, - Luidnel

Michael Natterer
2008-10-05 22:21:49 UTC (about 16 years ago)

Layers Projection using GEGL

On Sun, 2008-10-05 at 19:04 +0200, Luidnel MAIGNAN wrote:

Hello,

A patch that allows gimp to use gegl for projection has been posted at http://bugzilla.gnome.org/attachment.cgi?id=119910. Even if the code is rough, and some feature are not included (but easy to include), it shows that projection using gegl is ready to be included for 2.8, IMHO.

For the moment everything is in a single function, but a cleaner approach could be to make each class (Layer, Mask, Channel) manage its own related subgraph, and the image could combine every subgraph in a persistant way to reflect to layer stack.

That's exactly the right approach. I even started hacking on this and attached the patch to above bug.

Maybe some more things needs to be kept in mind during the implementation, or i'm making wrong assumptions on something, so your feedbacks are welcomed.

I'm sure the GEGL will kick us quite badly in the process, but let's see what happens. We just must not kill the existing code so we don't delay 2.8 forever if anything goes wrong/slow/b0rk/whatever.

ciao, --mitch