On Tue, Mar 11, 2003 at 01:07:21PM +0100, Raphal Quinet wrote:
On Tue, 11 Mar 2003 09:46:49 +, Adam D. Moss [EMAIL PROTECTED] wrote:
[...] The idea
of rehash-on-dirty would be to catch identical tiles, even
accidentally-identical tiles (like great masses of transparent
tiles, presuming that you scrub the RGB data of a transparent
pixel; the row-hints stuff has been doing this and potentially
breaking the ill-advised anti-erase feature for 100 years now
and no-one has complained), that the normal COW routes miss.
Hmmm... This is interesting. I didn't know that a side effect of the
row-hints would be to discard the RGB data from fully transparent
pixels. Of course, this makes sense and this is the right thing to do.
But this also means that some plug-ins such as Noisify should
definitely never use the invisible RGB data in any operation, because
the results could be (very) different if some tiles are swapped out.
See the discussion in: http://bugzilla.gnome.org/show_bug.cgi?id=72853
Hm. Though I see the posibility to temporarily make some
area transparent just to give some its parts nonzero opacity
later as a useful feature, the rest of world obviously thinks
otherwise ;-(
Yeti
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