FGFS-4.1/simgear
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Make expiry time for paged models settable from props

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Our paged models used the default minimumExpiryTime of zero seconds
which caused frequent stutter with AI traffic loaded.
This patch sets the minimumExpiryTime to 180 seconds, more than enough
to hold the models in memory during a full standard rate turn.

The property to set the expiry time is
/sim/rendering/plod-minimum-expiry-time-secs
This commit is contained in:
Torsten Dreyer 2014-11-19 17:23:29 +01:00
parent 46fe57fb8d
commit 023b5a09f7
1 changed files with 1 additions and 0 deletions
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simgear/scene/model/modellib.cxx
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@ -160,6 +160,7 @@ SGModelLib::loadPagedModel(const string &path, SGPropertyNode *prop_root,
plod->setName("Paged LOD for \"" + path + "\"");
plod->setFileName(0, path);
plod->setRange(0, 0.0, 50.0*SG_NM_TO_METER);
plod->setMinimumExpiryTime( 0, prop_root->getDoubleValue("/sim/rendering/plod-minimum-expiry-time-secs", 180.0 ) );
osg::ref_ptr<SGReaderWriterOptions> opt;
opt = SGReaderWriterOptions::copyOrCreate(osgDB::Registry::instance()->getOptions());