Re: [Gimp-developer] Border artifact from using nohalo to scale a layer with an alpha channel

[Elle Stone <ellestone ninedegreesbelow com>]

On 02/23/2016 07:45 AM, Øyvind Kolås wrote:
> In general it is better to open new bug-reports, rather than re-open
> old ones seeming similar - long threads of possibly different problems
> discussed in comments makes it hard to follow progress of an issue.
> This issue seems like it might already have a bug though bug #698468.
>
> /pippin

Pippin, thanks! I completely forgot to ask the main question, which was 
whether to post a GIMP or a GEGL bug report.

Elle

> > Scaling up or down using nohalo produces a partially transparent border
> > around the layer if the layer has an alpha channel. This is a long-standing
> > issue that still obtains (at least scaling down has produced the edge
> > artifact for a long time, bug 698601 describes the opposite situtation for
> > scaling up).
> >
> > I only just discovered that removing the alpha channel at least sometimes
> > allows to scale a layer without creating the edge artifacts. So I'm not sure
> > if removing the alpha channel always allows to scale without creating edge
> > artifacts.
> >
> > This bug was confirmed using babl/GEGL/GIMP updated today.
> >
> > Should I file a new bug report? or maybe instead open one of the old bug
> > reports?
> >
> > Elle