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I'm trying to render different parts of the same SVG on different threads. The
rendering is working fine, but is very slow. In order to speed it up, I've had
to create several SVG instances from the same asset to use across the threads.
I am guessing that creating these is slowed down a lot by having to re-parse
the SVG file...
So I see two solutions...
1. a copy constructor, preventing re-parsing of the SVG file. But still causing
me to have to alloc the same objects 2/3/4 times.
2. allow different parts of the same SVG to be rendered simultaneously,
specifying a viewBox/viewPort in the render call. This could essentially use
the same interface as "renderViewToCanvas()" but allow you to pass in a view.
(OR allow views to be dynamically added!)
Obviously option 1 is the quick and dirty way, with 2 being the more complex. I
am not familiar with your code base so I can't gauge how easy 2 would be...
"Why don't you break you SVG file up?"
I don't know the parts I require ahead of time, I'm rendering tiles of a map.
"Why don't you add 'views' into the SVG?"
As above.
What version of the product are you using? On what operating system?
1.2.1 and 1.2.2-beta-1
Original issue reported on code.google.com by sd...@airsource.co.uk on 19 Mar 2015 at 2:16
The text was updated successfully, but these errors were encountered:
So basically you are asking for a version of renderViewToX() where you pass in
a viewBox instead of a viewId?
Have you tried using setDocumentViewBox() before rendering to change which
parts of the SVG get rendered? It should be pretty much equivalent to what you
are asking.
Original comment by paul.leb...@gmail.com on 24 Mar 2015 at 12:08
>So basically you are asking for a version of renderViewToX() where you pass in
a viewBox instead of a viewId?
Yes, that would be the ideal solution.
Actually that won't be thread safe, so it isn't a workable solution
Yea, that's what I found unfortunately. Therefore I'm constructing several SVG
objects to render different view boxes in different threads. Any speed up to
the construction of the SVG objects would be a great start (e.g. via a copy
constructor)
Original comment by samduke...@gmail.com on 28 Mar 2015 at 7:27
Original issue reported on code.google.com by
sd...@airsource.co.uk
on 19 Mar 2015 at 2:16The text was updated successfully, but these errors were encountered: