osg::Node*
OSGTerrainEngineNode::createTile( const TileKey& key )
{
if ( !_tileBuilder.valid() )
return 0L;
osg::ref_ptr<Tile> tile;
bool hasRealData, hasLodBlendedLayers;
_tileBuilder->createTile(
key,
false,
tile,
hasRealData,
hasLodBlendedLayers );
if ( !tile.valid() )
return 0L;
// code block required in order to properly manage the ref count of the transform
SinglePassTerrainTechnique* tech = new SinglePassTerrainTechnique( _texCompositor.get() );
// prepare the interpolation technique for generating triangles:
if ( getMap()->getMapOptions().elevationInterpolation() == INTERP_TRIANGULATE )
tech->setOptimizeTriangleOrientation( false );
tile->setTerrainTechnique( tech );
tile->init();
return tech->takeTransform();
}
void
OSGTerrainEngineNode::installTerrainTechnique()
{
if ( _texCompositor->getTechnique() == TerrainOptions::COMPOSITING_MULTIPASS )
{
_terrain->setTechniquePrototype( new MultiPassTerrainTechnique( _texCompositor.get() ) );
OE_INFO << LC << "Compositing technique = MULTIPASS" << std::endl;
}
else
{
SinglePassTerrainTechnique* tech = new SinglePassTerrainTechnique( _texCompositor.get() );
tech->setClearDataAfterCompile( !_isStreaming );
if ( getMap()->getMapOptions().elevationInterpolation() == INTERP_TRIANGULATE )
tech->setOptimizeTriangleOrientation( false );
_terrain->setTechniquePrototype( tech );
}
}
void
OSGTerrainEngineNode::installTerrainTechnique()
{
if ( _texCompositor->getTechnique() == TerrainOptions::COMPOSITING_MULTIPASS )
{
//If we are using multipass mode, disable GLSL on it, it is using straight FFP
_terrain->getOrCreateStateSet()->setAttributeAndModes( new osg::Program(), osg::StateAttribute::OFF | osg::StateAttribute::PROTECTED );
_terrain->setTechniquePrototype( new MultiPassTerrainTechnique( _texCompositor.get() ) );
OE_INFO << LC << "Compositing technique = MULTIPASS" << std::endl;
}
else
{
SinglePassTerrainTechnique* tech = new SinglePassTerrainTechnique( _texCompositor.get() );
tech->setClearDataAfterCompile( !_isStreaming );
if ( getMap()->getMapOptions().elevationInterpolation() == INTERP_TRIANGULATE )
tech->setOptimizeTriangleOrientation( false );
_terrain->setTechniquePrototype( tech );
}
}
