Hi all,
As noted in other threads, I'm currently working on an app that adds
views at runtime. As expected, this causes the views created after the
viewer has started running to have no textures on the models, because of
the osg::Texture::_unrefImageDataAfterApply default setting of true.
Now, one solution would be to turn this off globally, for example by doing
osgUtil::Optimizer::TextureVisitor tv(
true, false, false, false, false, 1.0, 0);
loadedModel->accept(tv);
for every loaded model file. However, that will waste memory most of the
time, since new views will only be added occasionally.
A more efficient solution might be to reload the textures when a new
view is ready to be rendered for the first time. However, as I
understand it, an osg::Texture does not retain any information as to
where its image data came from, so I don't see how I would do this.
Has anyone thought of this, or tried to implement it? Is there already a
mechanism for that in OSG which I'm just not aware of?
Also, I've noticed the osg::Texture::_clientStorageHint, what does that do?
Finally, on the subject of the osgUtil::Optimizer::TextureVisitor, it
could have an option to change the _resizeNonPowerOfTwoHint, now that
most recent video cards implement quite fast support for NPOT textures
and some users might want to make use of it on existing models without
modifying the models directly. I'll try to submit this soon.
Thanks in advance,
J-S
--
______________________________________________________
Jean-Sebastien Guay [EMAIL PROTECTED]
http://www.cm-labs.com/
http://whitestar02.webhop.org/
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