Even simple blur without any use of feBlend svg primitive causes banding at display and png export.
But this is also the case with gradients.
________________________________ De : Preben Soeberg <prsodk@...400...> À : Niko Kiirala <niko@...1267...> Cc : inkscape-devel@lists.sourceforge.net Envoyé le : Samedi, 21 Mars 2009, 11h16mn 09s Objet : Re: [Inkscape-devel] Re : Inkscape 0.47 - was Re: GSoC 2009 - Project handling in the repository
-----Original Message----- From: Niko Kiirala [mailto:niko@...1267...] Sent: 21 March, 2009 16:31 To: inkscape-devel@lists.sourceforge.net Subject: Re: [Inkscape-devel] Re : Inkscape 0.47 - was Re: GSoC 2009 - Project handling in the repository
Thu, 19 Mar 2009 21:47:07 +0000 (GMT) Ivan Louette <ivan_louette@...48...> kirjoitti:
"256 levels is not a limitation of SVG itself, but a limitation of Inkscape rendering engine. Using more than 8 bits per colour component would help with this problem, but likely would require quite a bit of work."
It has some consequences on the blur quality (banding problems) and also the progressiveness of the height maps (odd plateaus). I don't know if this work could be done for the 0.47 release. I can't evaluate the amount of work because I am not a programmer. However that's not a limitation for my work on filters.
If there is banding visible with blur, moving to higher bitdepth is not going to help (unless there are some quality-loss bugs in blur rendering): even if Inkscape internally used 16-bit colours, they must be converted to 8-bit to be displayed on screen. Some kind of dithering might help, though.
The banding comes mostly from contrast manipulations, and having 16 bit representation of colors would alleviate that.
-- Niko Kiirala niko@...1267...
Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are powering Web 2.0 with engaging, cross-platform capabilities. Quickly and easily build your RIAs with Flex Builder, the Eclipse(TM)based development software that enables intelligent coding and step-through debugging. Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com _______________________________________________ Inkscape-devel mailing list Inkscape-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/inkscape-devel
------------------------------------------------------------------------------ Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are powering Web 2.0 with engaging, cross-platform capabilities. Quickly and easily build your RIAs with Flex Builder, the Eclipse(TM)based development software that enables intelligent coding and step-through debugging. Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com _______________________________________________ Inkscape-devel mailing list Inkscape-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/inkscape-devel