Refactored the GL object deletion management to use new osg::GraphicsObjectManager/GLObjectManager base classes, and osg::ContextData container.
This approach unifies much of the code handling the clean up of OpenGL graphics data, avoids lots of local mutexes and static variables that were previously required, and enables the clean up scheme to be easily extended by users providing their own GraphicsObjectManager subclasses. git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk@15130 16af8721-9629-0410-8352-f15c8da7e697
This commit is contained in:
Robert Osfield
335
src/osg/ContextData.cpp
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335
src/osg/ContextData.cpp
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/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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#include <osg/ContextData>
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#include <osg/FrameStamp>
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#include <OpenThreads/ReentrantMutex>
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#include <algorithm>
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using namespace osg;
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typedef std::map<unsigned int, osg::ref_ptr<ContextData> > ContextIDMap;
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static ContextIDMap s_contextIDMap;
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static OpenThreads::ReentrantMutex s_contextIDMapMutex;
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static ContextData::GraphicsContexts s_registeredContexts;
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ContextData::ContextData(unsigned int contextID):
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GraphicsObjectManager("ContextData", contextID)
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{
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}
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ContextData::~ContextData()
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{
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}
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void ContextData::newFrame(osg::FrameStamp* frameStamp)
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{
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// OSG_NOTICE<<"ContextData::newFrame("<<frameStamp->getFrameNumber()<<")"<<std::endl;
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for(ManagerMap::iterator itr = _managerMap.begin();
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itr != _managerMap.end();
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++itr)
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{
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osg::GraphicsObjectManager* gom = dynamic_cast<osg::GraphicsObjectManager*>(itr->second.get());
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if (gom) gom->newFrame(frameStamp);
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}
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}
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void ContextData::resetStats()
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{
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for(ManagerMap::iterator itr = _managerMap.begin();
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itr != _managerMap.end();
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++itr)
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{
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osg::GraphicsObjectManager* gom = dynamic_cast<osg::GraphicsObjectManager*>(itr->second.get());
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if (gom) gom->resetStats();
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}
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}
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void ContextData::reportStats(std::ostream& out)
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{
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for(ManagerMap::iterator itr = _managerMap.begin();
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itr != _managerMap.end();
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++itr)
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{
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osg::GraphicsObjectManager* gom = dynamic_cast<osg::GraphicsObjectManager*>(itr->second.get());
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if (gom) gom->reportStats(out);
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}
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}
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void ContextData::recomputeStats(std::ostream& out) const
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{
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for(ManagerMap::const_iterator itr = _managerMap.begin();
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itr != _managerMap.end();
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++itr)
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{
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osg::GraphicsObjectManager* gom = dynamic_cast<osg::GraphicsObjectManager*>(itr->second.get());
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if (gom) gom->recomputeStats(out);
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}
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}
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void ContextData::flushDeletedGLObjects(double currentTime, double& availableTime)
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{
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// OSG_NOTICE<<"ContextData::flushDeletedGLObjects("<<currentTime<<","<<availableTime<<")"<<std::endl;
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for(ManagerMap::iterator itr = _managerMap.begin();
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itr != _managerMap.end();
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++itr)
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{
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osg::GraphicsObjectManager* gom = dynamic_cast<osg::GraphicsObjectManager*>(itr->second.get());
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if (gom) gom->flushDeletedGLObjects(currentTime, availableTime);
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}
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}
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void ContextData::flushAllDeletedGLObjects()
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{
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// OSG_NOTICE<<"ContextData::flushAllDeletedGLObjects()"<<std::endl;
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for(ManagerMap::iterator itr = _managerMap.begin();
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itr != _managerMap.end();
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++itr)
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{
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osg::GraphicsObjectManager* gom = dynamic_cast<osg::GraphicsObjectManager*>(itr->second.get());
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if (gom) gom->flushAllDeletedGLObjects();
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}
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}
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void ContextData::deleteAllGLObjects()
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{
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// OSG_NOTICE<<"ContextData::deleteAllGLObjects()"<<std::endl;
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for(ManagerMap::iterator itr = _managerMap.begin();
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itr != _managerMap.end();
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++itr)
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{
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osg::GraphicsObjectManager* gom = dynamic_cast<osg::GraphicsObjectManager*>(itr->second.get());
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if (gom) gom->deleteAllGLObjects();
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}
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}
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void ContextData::discardAllGLObjects()
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{
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// OSG_NOTICE<<"ContextData::discardAllGLObjects()"<<std::endl;
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for(ManagerMap::iterator itr = _managerMap.begin();
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itr != _managerMap.end();
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++itr)
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{
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osg::GraphicsObjectManager* gom = dynamic_cast<osg::GraphicsObjectManager*>(itr->second.get());
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if (gom) gom->discardAllGLObjects();
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}
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}
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ContextData* osg::getContextData(unsigned int contextID)
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{
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OpenThreads::ScopedLock<OpenThreads::Mutex> lock(s_contextIDMapMutex);
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ContextIDMap::iterator itr = s_contextIDMap.find(contextID);
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return (itr!=s_contextIDMap.end()) ? itr->second.get() : 0;
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}
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/** Get or create the ContextData for a specific contextID.*/
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ContextData* osg::getOrCreateContextData(unsigned int contextID)
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{
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//OpenThreads::ScopedLock<OpenThreads::Mutex> lock(s_contextIDMapMutex);
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osg::ref_ptr<ContextData>& cd = s_contextIDMap[contextID];
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if (!cd)
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{
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cd = new ContextData(contextID);
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}
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return cd.get();
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}
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unsigned int ContextData::createNewContextID()
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{
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OpenThreads::ScopedLock<OpenThreads::Mutex> lock(s_contextIDMapMutex);
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// first check to see if we can reuse contextID;
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for(ContextIDMap::iterator itr = s_contextIDMap.begin();
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itr != s_contextIDMap.end();
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++itr)
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{
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if (!itr->second || itr->second->getNumContexts() == 0)
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{
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itr->second = new ContextData(itr->first);
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itr->second->setNumContexts(1);
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OSG_INFO<<"ContextData::createNewContextID() : reusing contextID="<<itr->first<<std::endl;
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return itr->first;
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}
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}
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unsigned int contextID = s_contextIDMap.size();
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s_contextIDMap[contextID] = new ContextData(contextID);
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s_contextIDMap[contextID]->setNumContexts(1);
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OSG_INFO<<"ContextData::createNewContextID() creating contextID="<<contextID<<std::endl;
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OSG_INFO<<"Updating the MaxNumberOfGraphicsContexts to "<<contextID+1<<std::endl;
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// update the maximum number of graphics contexts,
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// to ensure that texture objects and display buffers are configured to the correct size.
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osg::DisplaySettings::instance()->setMaxNumberOfGraphicsContexts( contextID + 1 );
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return contextID;
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}
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unsigned int ContextData::getMaxContextID()
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{
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OpenThreads::ScopedLock<OpenThreads::Mutex> lock(s_contextIDMapMutex);
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unsigned int maxContextID = 0;
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for(ContextIDMap::iterator itr = s_contextIDMap.begin();
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itr != s_contextIDMap.end();
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++itr)
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{
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if (itr->first > maxContextID) maxContextID = itr->first;
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}
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return maxContextID;
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}
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void ContextData::incrementContextIDUsageCount(unsigned int contextID)
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{
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OpenThreads::ScopedLock<OpenThreads::Mutex> lock(s_contextIDMapMutex);
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if (!s_contextIDMap[contextID]) s_contextIDMap[contextID] = new ContextData(contextID);
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s_contextIDMap[contextID]->incrementUsageCount();
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OSG_NOTICE<<"ContextData::incrementContextIDUsageCount("<<contextID<<") to "<<s_contextIDMap[contextID]->getNumContexts()<<std::endl;
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}
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void ContextData::decrementContextIDUsageCount(unsigned int contextID)
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{
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OpenThreads::ScopedLock<OpenThreads::Mutex> lock(s_contextIDMapMutex);
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if (s_contextIDMap[contextID].valid())
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{
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if (s_contextIDMap[contextID]->getNumContexts()!=0)
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{
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s_contextIDMap[contextID]->decrementUsageCount();
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}
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if (s_contextIDMap[contextID]->getNumContexts()==0)
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{
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s_contextIDMap[contextID] = 0;
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}
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}
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}
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void ContextData::registerGraphicsContext(GraphicsContext* gc)
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{
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OSG_INFO<<"ContextData::registerGraphicsContext "<<gc<<std::endl;
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if (!gc) return;
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OpenThreads::ScopedLock<OpenThreads::Mutex> lock(s_contextIDMapMutex);
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GraphicsContexts::iterator itr = std::find(s_registeredContexts.begin(), s_registeredContexts.end(), gc);
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if (itr != s_registeredContexts.end()) s_registeredContexts.erase(itr);
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s_registeredContexts.push_back(gc);
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}
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void ContextData::unregisterGraphicsContext(GraphicsContext* gc)
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{
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OSG_INFO<<"ContextData::unregisterGraphicsContext "<<gc<<std::endl;
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if (!gc) return;
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OpenThreads::ScopedLock<OpenThreads::Mutex> lock(s_contextIDMapMutex);
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GraphicsContexts::iterator itr = std::find(s_registeredContexts.begin(), s_registeredContexts.end(), gc);
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if (itr != s_registeredContexts.end()) s_registeredContexts.erase(itr);
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}
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ContextData::GraphicsContexts ContextData::getAllRegisteredGraphicsContexts()
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{
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OSG_INFO<<"ContextData::getAllRegisteredGraphicsContexts s_registeredContexts.size()="<<s_registeredContexts.size()<<std::endl;
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OpenThreads::ScopedLock<OpenThreads::Mutex> lock(s_contextIDMapMutex);
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return s_registeredContexts;
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}
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ContextData::GraphicsContexts ContextData::getRegisteredGraphicsContexts(unsigned int contextID)
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{
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GraphicsContexts contexts;
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OpenThreads::ScopedLock<OpenThreads::Mutex> lock(s_contextIDMapMutex);
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for(GraphicsContexts::iterator itr = s_registeredContexts.begin();
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itr != s_registeredContexts.end();
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++itr)
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{
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GraphicsContext* gc = *itr;
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if (gc->getState() && gc->getState()->getContextID()==contextID) contexts.push_back(gc);
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}
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OSG_INFO<<"ContextData::getRegisteredGraphicsContexts "<<contextID<<" contexts.size()="<<contexts.size()<<std::endl;
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return contexts;
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}
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GraphicsContext* ContextData::getOrCreateCompileContext(unsigned int contextID)
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{
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OSG_NOTICE<<"ContextData::createCompileContext."<<std::endl;
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{
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OpenThreads::ScopedLock<OpenThreads::Mutex> lock(s_contextIDMapMutex);
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if (s_contextIDMap[contextID]->getCompileContext()) return s_contextIDMap[contextID]->getCompileContext();
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}
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GraphicsContexts contexts = ContextData::getRegisteredGraphicsContexts(contextID);
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if (contexts.empty()) return 0;
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GraphicsContext* src_gc = contexts.front();
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const osg::GraphicsContext::Traits* src_traits = src_gc->getTraits();
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osg::GraphicsContext::Traits* traits = new osg::GraphicsContext::Traits;
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traits->screenNum = src_traits->screenNum;
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traits->displayNum = src_traits->displayNum;
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traits->hostName = src_traits->hostName;
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traits->width = 100;
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traits->height = 100;
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traits->red = src_traits->red;
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traits->green = src_traits->green;
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traits->blue = src_traits->blue;
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traits->alpha = src_traits->alpha;
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traits->depth = src_traits->depth;
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traits->sharedContext = src_gc;
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traits->pbuffer = true;
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osg::ref_ptr<osg::GraphicsContext> gc = osg::GraphicsContext::createGraphicsContext(traits);
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if (gc.valid() && gc->realize())
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{
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OpenThreads::ScopedLock<OpenThreads::Mutex> lock(s_contextIDMapMutex);
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s_contextIDMap[contextID]->setCompileContext(gc.get());
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OSG_NOTICE<<" succeeded ContextData::createCompileContext."<<std::endl;
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return gc.release();
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}
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else
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{
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return 0;
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}
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}
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void ContextData::setCompileContext(unsigned int contextID, GraphicsContext* gc)
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{
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OpenThreads::ScopedLock<OpenThreads::Mutex> lock(s_contextIDMapMutex);
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s_contextIDMap[contextID]->setCompileContext(gc);
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}
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GraphicsContext* ContextData::getCompileContext(unsigned int contextID)
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{
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// OSG_NOTICE<<"ContextData::getCompileContext "<<contextID<<std::endl;
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OpenThreads::ScopedLock<OpenThreads::Mutex> lock(s_contextIDMapMutex);
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ContextIDMap::iterator itr = s_contextIDMap.find(contextID);
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if (itr != s_contextIDMap.end()) return itr->second->getCompileContext();
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else return 0;
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}
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