Re: [Gimp-developer] Transformation obeying layer blending?

[C R <cajhne gmail com>]

Thanks for the update. Is it possible it implement my temporary fix in
the meanwhile?
Not saying it should be a blocker, but it would help tremendously in
the interim.

Thanks for all your work!
-C

On Mon, Mar 6, 2017 at 8:36 AM, Øyvind Kolås <pippin gimp org> wrote:
> On Thu, Mar 2, 2017 at 12:06 PM, Tobiasz Karoń <unfa00 gmail com> wrote:
> > When doing transformations (scale, rotation, perspective transform) the
> > transformed layer "pops out" and transformed part of the image is fully
> > opaque and drawn on top of everything else together with the transfomation
> > gizmo/controls/grid.
> >
> > Sometimes I'd like to be able to make this semi-transparent to be able to
> > align one layer to another, laying underneath it.
>
> The current live preview uses cairo to render the transformed layer on
> top of the UI, as mentioned - in 2.9 / 2.10 with the ability to
> control the opacity of the previewed transformed layer. This is
> awkward, but at last in many cases is a better realtime indication for
> adjustment than only having a grid, which is all GIMP had bedfore this
> proxy preview was added.
>
> Work recently/currently being done in GEGL enavling mipmap preview
> rendering, permits future versions of GIMP to do interactive preview
> in its correct position in the layer stack and at configured opacity
> and blending mode. This is not a blocker for 2.10 though - it is an
> improvement that likely will get attention in the 3.x cycle, possibly
> while also gaining the ability to do non-destructive transforms as
> filters attached to invididual layers/groups.
>
> /pippin - GEGL maintainer - http://patreon.com/pippin
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