void
TerrainEngineNode::validateTerrainOptions( TerrainOptions& options )
{
// make sure all the requested properties are compatible, and fall back as necessary.
//const Capabilities& caps = Registry::instance()->getCapabilities();
// warn against mixing multipass technique with preemptive/sequential mode:
if (options.compositingTechnique() == TerrainOptions::COMPOSITING_MULTIPASS &&
options.loadingPolicy()->mode() != LoadingPolicy::MODE_STANDARD )
{
OE_WARN << LC << "MULTIPASS compositor is incompatible with preemptive/sequential loading policy; "
<< "falling back on STANDARD mode" << std::endl;
options.loadingPolicy()->mode() = LoadingPolicy::MODE_STANDARD;
}
}
void
OSGTerrainEngineNode::preInitialize( const Map* map, const TerrainOptions& options )
{
TerrainEngineNode::preInitialize( map, options );
_isStreaming =
options.loadingPolicy()->mode() == LoadingPolicy::MODE_PREEMPTIVE ||
options.loadingPolicy()->mode() == LoadingPolicy::MODE_SEQUENTIAL;
// in standard mode, try to set the number of OSG DatabasePager threads to use.
if ( options.loadingPolicy().isSet() && !_isStreaming )
{
int numThreads = -1;
if ( options.loadingPolicy()->numLoadingThreads().isSet() )
{
numThreads = osg::maximum( 1, *options.loadingPolicy()->numLoadingThreads() );
}
else if ( options.loadingPolicy()->numLoadingThreadsPerCore().isSet() )
{
float numThreadsPerCore = *options.loadingPolicy()->numLoadingThreadsPerCore();
numThreads = osg::maximum( (int)1, (int)osg::round(
numThreadsPerCore * (float)OpenThreads::GetNumberOfProcessors() ) );
}
if ( numThreads > 0 )
{
OE_INFO << LC << "Requesting " << numThreads << " database pager threads in STANDARD mode" << std::endl;
osg::DisplaySettings::instance()->setNumOfDatabaseThreadsHint( numThreads );
//osg::DisplaySettings::instance()->setNumOfHttpDatabaseThreadsHint( numThreads );
}
}
}
void
OSGTerrainEngineNode::preInitialize( const Map* map, const TerrainOptions& options )
{
TerrainEngineNode::preInitialize( map, options );
_isStreaming =
options.loadingPolicy()->mode() == LoadingPolicy::MODE_PREEMPTIVE ||
options.loadingPolicy()->mode() == LoadingPolicy::MODE_SEQUENTIAL;
// in standard mode, try to set the number of OSG DatabasePager threads to use.
if ( options.loadingPolicy().isSet() && !_isStreaming )
{
int numThreads = -1;
if ( options.loadingPolicy()->numLoadingThreads().isSet() )
{
numThreads = osg::maximum( 1, *options.loadingPolicy()->numLoadingThreads() );
}
else if ( options.loadingPolicy()->numLoadingThreadsPerCore().isSet() )
{
float numThreadsPerCore = *options.loadingPolicy()->numLoadingThreadsPerCore();
numThreads = osg::maximum( (int)1, (int)osg::round(
numThreadsPerCore * (float)OpenThreads::GetNumberOfProcessors() ) );
}
if ( numThreads > 0 )
{
// NOTE: this doesn't work. the pager gets created before we ever get here.
numThreads = osg::maximum(numThreads, 2);
int numHttpThreads = osg::clampBetween( numThreads/2, 1, numThreads-1 );
//OE_INFO << LC << "Requesting pager threads in STANDARD mode: local=" << numThreads << ", http=" << numHttpThreads << std::endl;
osg::DisplaySettings::instance()->setNumOfDatabaseThreadsHint( numThreads );
osg::DisplaySettings::instance()->setNumOfHttpDatabaseThreadsHint( numHttpThreads );
}
}
}