Inkscape

Blur can be way faster

Bug #917085 reported by Camilo Martin
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Inkscape
Confirmed
Wishlist
Unassigned

Bug Description

I'm no graphics expert, but blur on the visual interface (i.e., the GUI, not the output) should be way faster. There are many blur algorithms - I do not always need a perfectly gaussian blur, so I'd really like to be albe to configure Inkscape to give me a stackblur or something like it.

Example StackBlur in Javascript: http://www.quasimondo.com/StackBlurForCanvas/StackBlurDemo.html

Please, blur should be faster, it is really really too slow, even a Javascript demo outperformed it. I use blur a lot!

Revision history for this message
su_v (suv-lp) wrote :

Which version of Inkscape are you using? On which OS/platform?
Did you test and compare a current version of the development branch?

tags: added: filters-svg performance renderer
removed: blur gaussianblur stackblur
Changed in inkscape:
importance: Undecided → Wishlist
Revision history for this message
Camilo Martin (herzschaltung) wrote :

Version: 0.48.2 r9819, OS Windows XP SP3 Professional. Sorry, I should have added that info.

Revision history for this message
su_v (suv-lp) wrote :

> Version: 0.48.2 r9819

Besides having a completely rewritten internal renderer based on cairo (available in the next major release 0.49) with much improved performance for rendering (incl. SVG filter effects like Gaussian blur):
<http://wiki.inkscape.org/wiki/index.php/Release_notes/0.49#Rendering_and_performance>
there has been an additional improvement in current trunk to increase the performance of blurs, see
<http://thread.gmane.org/gmane.comp.graphics.inkscape.devel/36273>

Revision history for this message
Camilo Martin (herzschaltung) wrote :

This is very promising, I'm eager to see it stable. Do you know if the implementation of "Lower quality (faster)" and "Lowest quality (fastest)" could use Stackblur? It's not precise, and not exactly like a gaussian blur, but it's so fast in code I saw elsewhere.

Otherwise, what should I do with this bug? I don't understand how/if I should do something with it (I'm new here).

Revision history for this message
su_v (suv-lp) wrote :

> This is very promising, I'm eager to see it stable.

The release date for the next major version is not yet known. If interested, you can test (unstable) development builds for windows:
On Inkscape's download page
 <http://inkscape.org/download/?lang=en>
click the link for the precompiled Windows packages to
 <http://www.oss-marketplace.com/index.php/downloads-mainmenu-63/Inkscape/Entwicklerversionen/>
There follow the link 'aktuellste Version' to the SkyDrive folder with the latest builds (7z archives).

Revision history for this message
Camilo Martin (herzschaltung) wrote :

That's very nice, suv - thanks for the link to the precompiled version!

I hope someday to contribute to Inkscape's source code (much to learn before that I think).

Revision history for this message
jazzynico (jazzynico) wrote :

Of course it would be great if we could improve filters and blur performances.

Changed in inkscape:
status: New → Confirmed
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