filtered group must be filtered as a whole

[bbyak]

Attached file renders in Inkscape as two identical blurred groups. But in Batik, they render differently: the top one is just two independently blurred objects (renders the same as Inkscape) and the bottom is a blurred group. Notice that in Batik the group first renders as a whole and then the result is blurred, which gives a different result at the boundary of the red and blue objects. Inkscape must render blurred groups the same as Batik.

[Niko Kiirala (kiirala)]

I have to say, I have no idea, why this difference. The difference is not in how Inkscape renders filters on groups. As can be seen from the attached group_filtering.svg, Inkscape filters a group as a whole. (as it should)

Also, I tried and applied gaussian blur in Gimp on an exported, non-filtered bitmap image of these items, and it too seemed to agree with inkscape rendering. This was so, that I knew exactly, what I was applying gaussian blur on.

As these stand, I am dumpfounded as to why this is happening, but yet I can clearly see the difference between Inkscape and Batik renderings.

[Niko Kiirala (kiirala)]

Looking back to this report, this seems to be caused by sRGB/linearRGB colour space confusion.

[su_v (suv-lp)]

Niko Kiirala wrote on 2009-05-16:
> Looking back to this report, this seems to be caused by
> sRGB/linearRGB colour space confusion.

Current trunk (>= 12172) renders the file now the same as Batik 1.7, Firefox 19, Opera 12.14:
<http://bazaar.launchpad.net/~inkscape.dev/inkscape/trunk/changes/11972>

Please reopen if you think the bug status was changed in error.