Filters on very large objects?

Post questions on how to use or achieve an effect in Inkscape.
ff7squirrelman
Posts: 3
Joined: Sat Mar 28, 2015 12:32 pm

Filters on very large objects?

Postby ff7squirrelman » Sat Mar 28, 2015 12:43 pm

I've been using filters for a specific effect and its been working great, however when I try with very large objects the filters are gibberish. It also runs extremely slow but that's normal with a lot of filters/large filtered objects. I assume this issue is simply because I am trying to apply filters to objects too large for Inkscape to handle but I figured I'd ask if this is normal before I give up trying. I'm talking 10,000's of pixels across (level design stuff). I tried increasing the thread count and changing the filter quality in the settings but neither helped.

As a alternative I tried splitting them up into smaller pieces however this doesn't work well because you see slight differences in the overlap. I assume this is just too much for Inkscape to handle (they are gigantic images after all) but maybe I'm doing something wrong or someone will have a better work around.


for example the top is the desired effect, the bottom is what happens if the image is too large.
http://i762.photobucket.com/albums/xx267/FF7_Squirelman/filter%20issue.png

hulf2012
Posts: 716
Joined: Sat Nov 24, 2012 12:37 pm

Re: Filters on very large objects?

Postby hulf2012 » Sat Mar 28, 2015 1:58 pm

Hello,

Well, SVG filters are designed for web, not for printing. I'm my personal not- so-expert opinion, you are forcing the limits here.

- It's usual to think that a powerfull machine can improve the render of this special features of the SVG format. I believe that a i7
machine, with lots of ram memory, with a quick ssd hard disk can help to obtain better and faster results.

- There is possible to do some improvement in the preferences of inkscape.: Change the number of threads, the visualizations, etc.

I haven't so much to say here. Maybe some other users can point to better ways of using the filters.

Regards
If you have problems:
1.- Post a sample (or samples) of your file please.
2.- Please check here:
http://tavmjong.free.fr/INKSCAPE/MANUAL/html/index.html
3.- If you manage to solve your problem, please post here your solution.

ff7squirrelman
Posts: 3
Joined: Sat Mar 28, 2015 12:32 pm

Re: Filters on very large objects?

Postby ff7squirrelman » Sat Mar 28, 2015 2:15 pm

Yeah I figured and already played around with the quality/thread settings, also I'm using a i7, though I forget if I installed the 64 bit or 32 version and i'm still using version .48. I'm pretty sure its just me trying to push the filters way beyond what inkscape can handle/they are designed for though and just wanted to make sure my guess was right.

Lazur
Posts: 4717
Joined: Tue Jun 14, 2016 10:38 am

Re: Filters on very large objects?

Postby Lazur » Sat Mar 28, 2015 2:26 pm

Install the latest build, 0.91 was largely improved on filters, namely
new renderer engine and enabling gpu usage *on filters only*.
It should make it work.

~suv
Posts: 2272
Joined: Sun May 10, 2009 2:07 am

Re: Filters on very large objects?

Postby ~suv » Sat Mar 28, 2015 7:27 pm

Lazur URH wrote:(…), namely new renderer engine and enabling gpu usage.
Inkscape 0.91 does not use the GPU. The rendering of filter effects in parallel threads is implemented via OpenMP (and was extended in 0.91 to all SVG filter primitives - Inkscape 0.48 used it only for Gaussian blurs).

Lazur
Posts: 4717
Joined: Tue Jun 14, 2016 10:38 am

Re: Filters on very large objects?

Postby Lazur » Sat Mar 28, 2015 9:51 pm

.

ff7squirrelman
Posts: 3
Joined: Sat Mar 28, 2015 12:32 pm

Re: Filters on very large objects?

Postby ff7squirrelman » Sun Mar 29, 2015 8:57 am

Wow I didn't think the version difference would make that significant a difference or I'd of tried that first. about 1/10th of the lag and it renders perfect now, hopefully it will continue to work as the levels get larger. Thanks for the help everyone.


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