[osg-users] Deep cloning an active root scene node

Robert Lockyer robert.lockyer at avalonholographics.com
Fri Mar 1 04:55:30 PST 2019

Thanks Robert, that's good advise for a more efficient approach in the long
term. I just figure it might be a simple proof of concept to just blindly
clone the whole graph. Sounds like there's no fundamental reason I can't do
that, so probably just some silly thing I'm getting wrong.

Robert Lockyer
Software Developer

Office: 1-709-701-0281
Email: robert.lockyer at avalonholographics.com

On Fri, Mar 1, 2019 at 8:36 AM Robert Osfield <robert.osfield at gmail.com>

> Hi Rob,
> There is a limit to how well you'll be able to get things to scale given
> the hardware limits you have to work around.  If you don't want the main
> rendering loop to wait for the rendering of all these extra views then
> you'll need to use a separate viewer(or compositeviewer) with it's own
> threading.  You'll need to manage your own frame loops in the secondary
> viewer.
> The only reason to copy data is if it the data is being modified by the
> different threads, I wouldn't recommend avoiding any modifications of the
> scene graph so you can simply share it all without copying.  If there are
> modifications you currently need I would suggest looking at ways to move
> this work elsewhere - often you can move to the GPU and just pass a Uniform
> per View to select the settings that are approriate so the shaders can do
> the right thing.
> Cheers,
> Robert.
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