Hi Nikolaus,
On 7/11/06, Hanekamp, Nikolaus <[EMAIL PROTECTED]> wrote:
I found the reason why the Geometry is not merged enough.
Optimizer.cpp:
mgv.setTargetMaximumNumberOfVertices(10000);
When this limit is reached, the rest of the Geometry of this Geode is not
merged at all.
( instead of restarting the merging).
So I get lots of Geometry nodes with only 1 triangle.
After rising the number from 10000 to 32767 the merging works well.
How can this be done without changing the Optimizer code ?
Thanks for picking up on this. I think what should be happening is
that each osg::Geometry should be capped at 10,000 vertices, but for
it not to stop merging, so that you have a collection of geometry all
that have roughly 10,000 vertices in.
The new performance data:
Loading: 8.9 sec -> 20.7 sec // multiple loaded
Optimizing: 1.3 sec -> 30.9 sec
Cull: 0.3 msec -> 0.7 msec
Draw: 5.3 msec -> 6.2 msec
Some statistics:
Flt OpenFlight
49 89 Drawables
8849 8779 Primitives
30825 29716 Vertices
The loading and optimizing is still much slower using the new .flt loader.
A simple merging of consecutive faces, which have the same state, into 1
Geometry within the loader
could help save time for loading and optimizing.
The merging is likely to be the bit slowing things down. Perhaps
having a OpenFlight specific merge inside the loader would be
appropriate. The original one inside the old OpenFlight plugin was
pretty ropey and not something I'd want to copy though.
Robert.
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