Please consider a case where I have a single scene graph and I am torn between

a) create one CompositeViewer holding n viewers and calling
CompositeViewer::frame() just once

b) creating n viewers and calling Viewer::frame() n times

And as a bonus please consider:

c) I want to add/remove viewers at runtime

d) I'm happy to run SingleThreaded

Question:

What are the repercussions of choosing (a) when I "should" have chosen (b)?

What are the repercussions of choosing (b) when I "should" have chosen (a)?

===

I think I want (?) an answer that includes terms such as
"DatabasePager", "texture loading", "efficiency", "releaseGLObjects".

Thank you!

Chris
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