Painting on a temporary layer

[Bart Coppens]

Quoting Boudewijn Rempt <boud at valdyas.org>: 
> This is for painting with filters, right? Not for applying filters in 
> general? 
Yes, it's for painting with filters. 
 
> Does that mean that for every paint action that uses a temp layer, a temp 
> layer is constructed as big as the parent layer? 
Yes 
 
> That's an approach that I 
> first experimented with for ordinary brushes, but which I gave up on because 
> it was too memory intensive and took too much time, in favour of the dab,  
> which is a small temp layer as big as the minimal rect around the brush. 
Yes, that's what I feared. Because of that, I made the whole feature optional 
and set to off by default. So only the paint tools that really need it can use 
it. 
 
 
> KisView::updateCanvas() ? 
I'll try that, thanks for the idea. 
 
Bart Coppens