FGFS-4.1/OpenSceneGraph
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Improvements to the DatabasePager and PagedLOD class adding support for

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deleting expuired children in the database thread.
This commit is contained in:
Robert Osfield
2003-07-09 14:55:39 +00:00
parent dcbaf59753
commit 5aa47a77c2
9 changed files with 140 additions and 50 deletions
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50
include/osgProducer/DatabasePager
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@@ -33,19 +33,23 @@ class OSGPRODUCER_EXPORT DatabasePager : public osg::NodeVisitor::DatabaseReques
DatabasePager();
/** add a request to load a node file to end the the database request list.*/
/** Add a request to load a node file to end the the database request list.*/
virtual void requestNodeFile(const std::string& fileName,osg::Group* group);
/** run does the database paging.*/
virtual void run();
/** add the loaded data to the scene graph.*/
/** Add the loaded data to the scene graph.*/
void addLoadedDataToSceneGraph();
/** find all PagedLOD nodes in a subgraph and register them with
* the DatabasePager so it can keep track of expired nodes.*/
/** Find all PagedLOD nodes in a subgraph and register them with
* the DatabasePager so it can keep track of expired nodes.
* note, should be only be called from the update thread. */
void registerPagedLODs(osg::Node* subgraph);
/** Set the amount of time that a subgraph will be kept without being visited in the cull traversal
* before being removed.*/
void setExpiryDelay(double expiryDelay) { _expiryDelay = expiryDelay; }
@@ -54,10 +58,27 @@ class OSGPRODUCER_EXPORT DatabasePager : public osg::NodeVisitor::DatabaseReques
* before being removed.*/
double getExpiryDelay() const { return _expiryDelay; }
/** iterate through the active PagedLOD nodes children removing
* children which havn't been visited since specified expiryTime.*/
/** set whether the removed subgraphs should be deleted in the database thread or not.*/
void setDeleteRemovedSubgraphsInDatabaseThread(bool flag) { _deleteRemovedSubgraphsInDatabaseThread = flag; }
/** get whether the removed subgraphs should be deleted in the database thread or not.*/
bool getDeleteRemovedSubgraphsInDatabaseThread() const { return _deleteRemovedSubgraphsInDatabaseThread; }
/** Iterate through the active PagedLOD nodes children removing
* children which havn't been visited since specified expiryTime.
* note, should be only be called from the update thread. */
void removeExpiredSubgraphs(double currentFrameTime);
/* Set the maximum amount of time available for compile rendering objects. */
void setMaximumTimeForCompilingRenderingObjects(double time) { _maximumTimeForCompiling = time; }
/* Get the maximum amount of time available for compile rendering objects. */
double getMaximumTimeForCompilingRenderingObjects() const { return _maximumTimeForCompiling; }
/** Compile the rendering objects (display lists,texture objects, VBO's) on loaded subgraph.
* note, should only be called from the draw thread.*/
void compileRenderingObjects(osg::State& state);
public:
@@ -66,6 +87,9 @@ class OSGPRODUCER_EXPORT DatabasePager : public osg::NodeVisitor::DatabaseReques
protected :
virtual ~DatabasePager() {}
typedef std::vector< osg::ref_ptr<osg::StateSet> > StateSetList;
typedef std::vector< osg::ref_ptr<osg::Drawable> > DrawableList;
struct DatabaseRequest : public osg::Referenced
{
@@ -84,13 +108,23 @@ class OSGPRODUCER_EXPORT DatabasePager : public osg::NodeVisitor::DatabaseReques
DatabaseRequestList _fileRequestList;
Producer::Mutex _fileRequestListMutex;
DatabaseRequestList _fileLoadedList;
Producer::Mutex _fileLoadedListMutex;
DatabaseRequestList _dataLoadedList;
Producer::Mutex _dataLoadedListMutex;
bool _deleteRemovedSubgraphsInDatabaseThread;
osg::NodeList _childrenToDeleteList;
Producer::Mutex _childrenToDeleteListMutex;
DatabaseRequestList _dataToMergeList;
Producer::Mutex _dataToMergeMutex;
PagedLODList _pagedLODList;
double _expiryDelay;
double _maximumTimeForCompiling;
};
}

2
include/osgProducer/OsgSceneHandler
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@@ -45,7 +45,7 @@ class OSGPRODUCER_EXPORT OsgSceneHandler : public Producer::Camera::SceneHandler
{
public:
virtual ~Callback() {}
virtual void operator()(OsgSceneHandler&, const Producer::Camera &) = 0;
virtual void operator()(OsgSceneHandler&, Producer::Camera &) = 0;
};
virtual void clear(Producer::Camera& camera)