[osg-users] Correct way to modify scene graph [SEC=UNCLASSIFIED]

[Thamm, Russell]

UNCLASSIFIED
Hi Paul,

Thanks for your response.

The viewer is single-threaded. Furthermore, I now make all modifications to the scene tree in the render thread (prerender) but I still get the occasional crash in the render thread:

C:\Program Files\Microsoft Visual Studio  9.0\VC\include\vector line 116

Expression("this->_Has_Container()", 0)

Unfortunately the error doesn't occur reliably enough to track down. It does seem to occur when I modify the scene tree.

Cheers
Russell


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From: Paul Pocock [mailto:paul.tanja at internode.on.net]
Sent: Thursday, 9 November, 2017 2:50 p.m.
To: OpenSceneGraph Users; Thamm, Russell
Subject: Re: [osg-users] Correct way to modify scene graph [SEC=UNCLASSIFIED]


Hi Russell,

I suppose setting the threading model to SingleThreaded is not an option, maybe set Root Node to DYNAMIC variance? I can't remember the actual call.

good luck,

On 09/11/17 14:49, Thamm, Russell wrote:

UNCLASSIFIED
Hi

I am in the process of porting an MFC application from plib to osg.

Currently, if I want to actually modify the scene graph (adding, deleting nodes etc) while the render thread is running I do the following:

parentNode->setNodeMask(0);
modify scene graph below parent node
parentNode->setNodeMask(~0);

This seems to work but is there a better way?

Cheers
Russell












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