On 28 Apr 2012, at 20:10, Stuart Buchanan wrote:

> 3) I've reduce the number of Drawables generated by reducing the quad
> tree depth from 3 to 2, and reducing the number of LoD leaf nodes from
> 10 to 4. James Turner - I'd be very interested if this change improves
> your framerates.

Sadly no (I already tried 3 to 2 and 10 to 2 - the number of drawables and 
primitive sets drops, but that's clearly not the bottleneck in this case).

So I still go from 50fps to 33ish over EGPH with density = 1 .... not great 
(but flyable)

One thing I did notice - you're creating a state set for each bin, based on 
texture. I think you want to globally cache those by texture (all the other 
parameters are fixed anyway, right?), so that OSG can see that all the 
prim-sets in different bins share a state set, and hence reduce state changes.

James


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