Re: Mozilla clips the edges of blurred shapes

On Tuesday, December 2, 2008, 9:00:14 AM, vladimir wrote:

vdgc> Hi guys,

vdgc> I've noticed that Mozilla clips the edges of SVG shapes that have been
vdgc> applied a blur filter. It seems like the renderer creates some kind of
vdgc> a bounding box around the shape, but fails to extend it after the blur
vdgc> is applied, so the blurred edges of the shape appear clipped.

vdgc> Here is a small test SVG to show the problem (generated with Inkscape,
vdgc> exported as "plain SVG"):
vdgc> http://valan.net/tmp/mozilla/clipped_edges_of_blurred_shapes.test.svg

(By the way, that document is being served as text/plain, so Firefox (and other conformant implementations) display the source code. Could you fix? I downloaded it and viewed it locally.)

vdgc> Here is the Inkscape output, which looks fine:
vdgc> http://valan.net/tmp/mozilla/clipped_edges_of_blurred_shapes.inkscape-output.png

That is the correct rendering, and is also what Opera and Batik (for example) do; so its correct and its implemented.

vdgc> Here is the Mozilla (FF 3.1 beta) output where the four edges appear
vdgc> clipped:
vdgc> http://valan.net/tmp/mozilla/clipped_edges_of_blurred_shapes.mozilla-output.png


Yes, that's incorrect.

-- 
 Chris Lilley                    mailto:[email protected]
 Technical Director, Interaction Domain
 W3C Graphics Activity Lead
 Co-Chair, W3C Hypertext CG