Mipmapping for canvas. Ideas and comments.
mw_triad at users.sourceforge.net
Tue Jul 21 17:41:01 CEST 2009
Dmitry Kazakov wrote:
> The tile engine has already come over to a quite stable state by this
> moment. I think today i'll publish patches for trunk. So now i'm
> publishing my ideas about mipmapping feature of viewing mechanism.
> Well, mipmapping could be added in two parts of krita: the first -
> before actual merging and the second - after merging.
> * The first could be done inside KisPaintDevice class and all merging
> would be done with prescaled images.
> + we merge only small images, not fullsized big ones
> + as a consequence, filter layers and masks are applied much
Cons: filter layers will be wrong? Color filters, no, but how do you
even attempt to apply a custom convolution filter to an input that is
half resolution and expect to get anything even remotely correct? (Or do
you decide per-filter if it can be applied to downsampled input? Would
that even be possible?)
Consider especially that "filter layer" may in the future include
debayer, which would be hideously, hideously broken by applying it to a
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