[osg-users] Frame rate improvement

[Ale Maro]

Hi,

until now I improved visualization performance of my application in several way thanks to your suggestions.
Now I would like to go another step ahead.

May be this is common topics but it is not clear to me how to solve it.

I have a CAD-like application. 
Potentially a scene can contain objects with thousand of sub-objects, each one can be managed separately (e.g. I can select, modify or delete a sub-object). This means that the scene contains nodes with thousand of children and each children is a MatrixTransform with a geometry children.
Typically children are small geometries and root nodes can be huge geometries.

I would like to improve frame rate for this type of scene.

What I see in a sample scene is (view is single threaded):

Cull: ~897 (after some time often it go down to 300/400, I do not know why)
Draw: ~37
GPU: ~20
Frame rate: 1 FPS

The same scene merged in one node gives me:

Cull: ~0.30
Draw: ~0.45
GPU: ~29
Frame rate: 32 FPS

Do you think I can improve the performance without merging nodes?

Thanks a lot.

Ale

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http://forum.openscenegraph.org/viewtopic.php?p=72047#72047