I'm running my tests Windows XP (P4 1.4 GHz / 1 Go) with a "debug" build
of OpenSceneGraph.
Even if my quadtree is not well balanced, since all the geometry has been
loaded, why the animation freezes when the LODs switch to another child ?
If I have big tiles, it only affect the DatabasePager. Once the tiles are
loaded, it's thread should be blocked on a "condition" (file request
queue).
Curiously, when the terrain is viewed from a far point of view,
osgviewer eat 100% of the CPU with 90% for the system...
I have converted the terrain to flt and with Performer, there is no
problem.
Robert Osfield wrote:
On 6/2/06, Lionel Lagarde <[EMAIL PROTECTED]> wrote:
Yes it is paged terrain, but it happens when the tiles are loaded.
Of course, while all the tiles have not been loaded, it is normal
to have some freezes.
Its not normal to have freezes, the database pager has be specifically
designed to achieve contrant framerates without frame drops. This
isn't always possible, but is possible with most models.
Which machine/OS are you using?
I have created my own PagedLOD node. It does not handle (yet) the tiles
"unloading" so, once every node are visited, everything should be in
memory.
But freezes are still here.
The fact you are getting "freezes" suggest that your model is poorly
balanced - are you using a small number of massive geometries or
textures? If so cut their size down.
I will try to convert my terrain to a big non paged ive file to see
if I am
missing something.
Try using osgdem to build your databases, it'll build it with the
appropriate level of granulaity designed for good performance.
Robert.
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