I tried the three filters versions on Batik and they render and export correctly.
ivan
----- Message transféré ---- De : Ivan Louette <ivan_louette@...48...> À : the Adib <theadib@...1439...>; inkscape-devel <inkscape-devel@...838...ourceforge.net> Envoyé le : Mercredi, 29 Avril 2009, 19h14mn 56s Objet : [Inkscape-devel] Re : rendering quality for filter etc.
Perhaps linked to the problem I have with my latest filter which is intended to draw dark or black edges on pictures.
It renders well in Inkscape, Opera and Firefox, but export to png is bad and never gives correctly the dark lines.
I join you a file with three filters samples to apply to the embedded pictures.
ivan
________________________________ De : the Adib <theadib@...1439...> À : inkscape-devel inkscape-devel@lists.sourceforge.net Envoyé le : Mercredi, 29 Avril 2009, 1h53mn 25s Objet : [Inkscape-devel] rendering quality for filter etc.
There is this issue 322116 https://bugs.launchpad.net/bugs/322116 "PDF export does not use the highest quality for rasterized filters" The reason for this issue is that each nr_arena_item checks the preferences for the filter quality even for off screen rendering.
This is wrong behaviour.
During png export there is a sequence like this save, set ... rendering ... restore. This changes for a short moment the preferences.
This is also not good style. (remember a background task renderin to png - in future)
I developed a patch that is attached to the issue in launchpad.
Attached patch puts render quality properties to nr_arena. You can do now "nr_arena_set_renderoffscreen(arena)" for an offscreen arena in order to get highest accuracy.
please review!
Adib.
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