void CompositeViewer::getOperationThreads(OperationThreads& threads, bool onlyActive)
{
    threads.clear();

    Contexts contexts;
    getContexts(contexts);
    for(Contexts::iterator gcitr = contexts.begin();
            gcitr != contexts.end();
            ++gcitr)
    {
        osg::GraphicsContext* gc = *gcitr;
        if (gc->getGraphicsThread() &&
                (!onlyActive || gc->getGraphicsThread()->isRunning()) )
        {
            threads.push_back(gc->getGraphicsThread());
        }
    }

    Cameras cameras;
    getCameras(cameras);
    for(Cameras::iterator citr = cameras.begin();
            citr != cameras.end();
            ++citr)
    {
        osg::Camera* camera = *citr;
        if (camera->getCameraThread() &&
                (!onlyActive || camera->getCameraThread()->isRunning()) )
        {
            threads.push_back(camera->getCameraThread());
        }
    }

}
예제 #2
0
파일: ViewerBase.cpp 프로젝트: 3dcl/osg
void ViewerBase::startThreading()
{
    if (_threadsRunning) return;

    OSG_INFO<<"Viewer::startThreading() - starting threading"<<std::endl;

    // release any context held by the main thread.
    releaseContext();

    _threadingModel = _threadingModel==AutomaticSelection ? suggestBestThreadingModel() : _threadingModel;

    Contexts contexts;
    getContexts(contexts);

    OSG_INFO<<"Viewer::startThreading() - contexts.size()="<<contexts.size()<<std::endl;

    Cameras cameras;
    getCameras(cameras);

    unsigned int numThreadsOnStartBarrier = 0;
    unsigned int numThreadsOnEndBarrier = 0;
    switch(_threadingModel)
    {
        case(SingleThreaded):
            numThreadsOnStartBarrier = 1;
            numThreadsOnEndBarrier = 1;
            return;
        case(CullDrawThreadPerContext):
            numThreadsOnStartBarrier = contexts.size()+1;
            numThreadsOnEndBarrier = contexts.size()+1;
            break;
        case(DrawThreadPerContext):
            numThreadsOnStartBarrier = 1;
            numThreadsOnEndBarrier = 1;
            break;
        case(CullThreadPerCameraDrawThreadPerContext):
            numThreadsOnStartBarrier = cameras.size()+1;
            numThreadsOnEndBarrier = 1;
            break;
        default:
            OSG_NOTICE<<"Error: Threading model not selected"<<std::endl;
            return;
    }

    // using multi-threading so make sure that new objects are allocated with thread safe ref/unref
    osg::Referenced::setThreadSafeReferenceCounting(true);

    Scenes scenes;
    getScenes(scenes);
    for(Scenes::iterator scitr = scenes.begin();
        scitr != scenes.end();
        ++scitr)
    {
        if ((*scitr)->getSceneData())
        {
            OSG_INFO<<"Making scene thread safe"<<std::endl;

            // make sure that existing scene graph objects are allocated with thread safe ref/unref
            (*scitr)->getSceneData()->setThreadSafeRefUnref(true);

            // update the scene graph so that it has enough GL object buffer memory for the graphics contexts that will be using it.
            (*scitr)->getSceneData()->resizeGLObjectBuffers(osg::DisplaySettings::instance()->getMaxNumberOfGraphicsContexts());
        }
    }

    int numProcessors = OpenThreads::GetNumberOfProcessors();
    bool affinity = numProcessors>1;

    Contexts::iterator citr;

    unsigned int numViewerDoubleBufferedRenderingOperation = 0;

    bool graphicsThreadsDoesCull = _threadingModel == CullDrawThreadPerContext || _threadingModel==SingleThreaded;

    for(Cameras::iterator camItr = cameras.begin();
        camItr != cameras.end();
        ++camItr)
    {
        osg::Camera* camera = *camItr;
        Renderer* renderer = dynamic_cast<Renderer*>(camera->getRenderer());
        if (renderer)
        {
            renderer->setGraphicsThreadDoesCull(graphicsThreadsDoesCull);
            renderer->setDone(false);
            renderer->reset();
            ++numViewerDoubleBufferedRenderingOperation;
        }
    }

    if (_threadingModel==CullDrawThreadPerContext)
    {
        _startRenderingBarrier = 0;
        _endRenderingDispatchBarrier = 0;
        _endDynamicDrawBlock = 0;
    }
    else if (_threadingModel==DrawThreadPerContext ||
             _threadingModel==CullThreadPerCameraDrawThreadPerContext)
    {
        _startRenderingBarrier = 0;
        _endRenderingDispatchBarrier = 0;
        _endDynamicDrawBlock = new osg::EndOfDynamicDrawBlock(numViewerDoubleBufferedRenderingOperation);

#ifndef OSGUTIL_RENDERBACKEND_USE_REF_PTR
        if (!osg::Referenced::getDeleteHandler()) osg::Referenced::setDeleteHandler(new osg::DeleteHandler(2));
        else osg::Referenced::getDeleteHandler()->setNumFramesToRetainObjects(2);
#endif
    }

    if (numThreadsOnStartBarrier>1)
    {
        _startRenderingBarrier = new osg::BarrierOperation(numThreadsOnStartBarrier, osg::BarrierOperation::NO_OPERATION);
    }

    if (numThreadsOnEndBarrier>1)
    {
        _endRenderingDispatchBarrier = new osg::BarrierOperation(numThreadsOnEndBarrier, _endBarrierOperation);
    }


    osg::ref_ptr<osg::BarrierOperation> swapReadyBarrier = contexts.empty() ? 0 : new osg::BarrierOperation(contexts.size(), osg::BarrierOperation::NO_OPERATION);

    osg::ref_ptr<osg::SwapBuffersOperation> swapOp = new osg::SwapBuffersOperation();

    typedef std::map<OpenThreads::Thread*, int> ThreadAffinityMap;
    ThreadAffinityMap threadAffinityMap;

    unsigned int processNum = 1;
    for(citr = contexts.begin();
        citr != contexts.end();
        ++citr, ++processNum)
    {
        osg::GraphicsContext* gc = (*citr);

        if (!gc->isRealized())
        {
            OSG_INFO<<"ViewerBase::startThreading() : Realizng window "<<gc<<std::endl;
            gc->realize();
        }

        gc->getState()->setDynamicObjectRenderingCompletedCallback(_endDynamicDrawBlock.get());

        // create the a graphics thread for this context
        gc->createGraphicsThread();

        if (affinity) gc->getGraphicsThread()->setProcessorAffinity(processNum % numProcessors);
        threadAffinityMap[gc->getGraphicsThread()] = processNum % numProcessors;

        // add the startRenderingBarrier
        if (_threadingModel==CullDrawThreadPerContext && _startRenderingBarrier.valid()) gc->getGraphicsThread()->add(_startRenderingBarrier.get());

        // add the rendering operation itself.
        gc->getGraphicsThread()->add(new osg::RunOperations());

        if (_threadingModel==CullDrawThreadPerContext && _endBarrierPosition==BeforeSwapBuffers && _endRenderingDispatchBarrier.valid())
        {
            // add the endRenderingDispatchBarrier
            gc->getGraphicsThread()->add(_endRenderingDispatchBarrier.get());
        }

        if (swapReadyBarrier.valid()) gc->getGraphicsThread()->add(swapReadyBarrier.get());

        // add the swap buffers
        gc->getGraphicsThread()->add(swapOp.get());

        if (_threadingModel==CullDrawThreadPerContext && _endBarrierPosition==AfterSwapBuffers && _endRenderingDispatchBarrier.valid())
        {
            // add the endRenderingDispatchBarrier
            gc->getGraphicsThread()->add(_endRenderingDispatchBarrier.get());
        }

    }

    if (_threadingModel==CullThreadPerCameraDrawThreadPerContext && numThreadsOnStartBarrier>1)
    {
        Cameras::iterator camItr;

        for(camItr = cameras.begin();
            camItr != cameras.end();
            ++camItr, ++processNum)
        {
            osg::Camera* camera = *camItr;
            camera->createCameraThread();

            if (affinity) camera->getCameraThread()->setProcessorAffinity(processNum % numProcessors);
            threadAffinityMap[camera->getCameraThread()] = processNum % numProcessors;

            osg::GraphicsContext* gc = camera->getGraphicsContext();

            // add the startRenderingBarrier
            if (_startRenderingBarrier.valid()) camera->getCameraThread()->add(_startRenderingBarrier.get());

            Renderer* renderer = dynamic_cast<Renderer*>(camera->getRenderer());
            renderer->setGraphicsThreadDoesCull(false);
            camera->getCameraThread()->add(renderer);

            if (_endRenderingDispatchBarrier.valid())
            {
                // add the endRenderingDispatchBarrier
                gc->getGraphicsThread()->add(_endRenderingDispatchBarrier.get());
            }

        }

        for(camItr = cameras.begin();
            camItr != cameras.end();
            ++camItr)
        {
            osg::Camera* camera = *camItr;
            if (camera->getCameraThread() && !camera->getCameraThread()->isRunning())
            {
                OSG_INFO<<"  camera->getCameraThread()-> "<<camera->getCameraThread()<<std::endl;
                camera->getCameraThread()->startThread();
            }
        }
    }

#if 0
    if (affinity)
    {
        OpenThreads::SetProcessorAffinityOfCurrentThread(0);
        if (_scene.valid() && _scene->getDatabasePager())
        {
#if 0
            _scene->getDatabasePager()->setProcessorAffinity(1);
#else
            _scene->getDatabasePager()->setProcessorAffinity(0);
#endif
        }
    }
#endif

#if 0
    if (affinity)
    {
        for(ThreadAffinityMap::iterator titr = threadAffinityMap.begin();
            titr != threadAffinityMap.end();
            ++titr)
        {
            titr->first->setProcessorAffinity(titr->second);
        }
    }
#endif


    for(citr = contexts.begin();
        citr != contexts.end();
        ++citr)
    {
        osg::GraphicsContext* gc = (*citr);
        if (gc->getGraphicsThread() && !gc->getGraphicsThread()->isRunning())
        {
            OSG_INFO<<"  gc->getGraphicsThread()->startThread() "<<gc->getGraphicsThread()<<std::endl;
            gc->getGraphicsThread()->startThread();
            // OpenThreads::Thread::YieldCurrentThread();
        }
    }

    _threadsRunning = true;

    OSG_INFO<<"Set up threading"<<std::endl;
}
예제 #3
0
파일: ViewerBase.cpp 프로젝트: 3dcl/osg
void ViewerBase::renderingTraversals()
{
    bool _outputMasterCameraLocation = false;
    if (_outputMasterCameraLocation)
    {
        Views views;
        getViews(views);

        for(Views::iterator itr = views.begin();
            itr != views.end();
            ++itr)
        {
            osgViewer::View* view = *itr;
            if (view)
            {
                const osg::Matrixd& m = view->getCamera()->getInverseViewMatrix();
                OSG_NOTICE<<"View "<<view<<", Master Camera position("<<m.getTrans()<<"), rotation("<<m.getRotate()<<")"<<std::endl;
            }
        }
    }

    Contexts contexts;
    getContexts(contexts);

    // check to see if windows are still valid
    checkWindowStatus(contexts);
    if (_done) return;

    double beginRenderingTraversals = elapsedTime();

    osg::FrameStamp* frameStamp = getViewerFrameStamp();

    if (getViewerStats() && getViewerStats()->collectStats("scene"))
    {
        unsigned int frameNumber = frameStamp ? frameStamp->getFrameNumber() : 0;

        Views views;
        getViews(views);
        for(Views::iterator vitr = views.begin();
            vitr != views.end();
            ++vitr)
        {
            View* view = *vitr;
            osg::Stats* stats = view->getStats();
            osg::Node* sceneRoot = view->getSceneData();
            if (sceneRoot && stats)
            {
                osgUtil::StatsVisitor statsVisitor;
                sceneRoot->accept(statsVisitor);
                statsVisitor.totalUpStats();

                unsigned int unique_primitives = 0;
                osgUtil::Statistics::PrimitiveCountMap::iterator pcmitr;
                for(pcmitr = statsVisitor._uniqueStats.GetPrimitivesBegin();
                    pcmitr != statsVisitor._uniqueStats.GetPrimitivesEnd();
                    ++pcmitr)
                {
                    unique_primitives += pcmitr->second;
                }

                stats->setAttribute(frameNumber, "Number of unique StateSet", static_cast<double>(statsVisitor._statesetSet.size()));
                stats->setAttribute(frameNumber, "Number of unique Group", static_cast<double>(statsVisitor._groupSet.size()));
                stats->setAttribute(frameNumber, "Number of unique Transform", static_cast<double>(statsVisitor._transformSet.size()));
                stats->setAttribute(frameNumber, "Number of unique LOD", static_cast<double>(statsVisitor._lodSet.size()));
                stats->setAttribute(frameNumber, "Number of unique Switch", static_cast<double>(statsVisitor._switchSet.size()));
                stats->setAttribute(frameNumber, "Number of unique Geode", static_cast<double>(statsVisitor._geodeSet.size()));
                stats->setAttribute(frameNumber, "Number of unique Drawable", static_cast<double>(statsVisitor._drawableSet.size()));
                stats->setAttribute(frameNumber, "Number of unique Geometry", static_cast<double>(statsVisitor._geometrySet.size()));
                stats->setAttribute(frameNumber, "Number of unique Vertices", static_cast<double>(statsVisitor._uniqueStats._vertexCount));
                stats->setAttribute(frameNumber, "Number of unique Primitives", static_cast<double>(unique_primitives));

                unsigned int instanced_primitives = 0;
                for(pcmitr = statsVisitor._instancedStats.GetPrimitivesBegin();
                    pcmitr != statsVisitor._instancedStats.GetPrimitivesEnd();
                    ++pcmitr)
                {
                    instanced_primitives += pcmitr->second;
                }

                stats->setAttribute(frameNumber, "Number of instanced Stateset", static_cast<double>(statsVisitor._numInstancedStateSet));
                stats->setAttribute(frameNumber, "Number of instanced Group", static_cast<double>(statsVisitor._numInstancedGroup));
                stats->setAttribute(frameNumber, "Number of instanced Transform", static_cast<double>(statsVisitor._numInstancedTransform));
                stats->setAttribute(frameNumber, "Number of instanced LOD", static_cast<double>(statsVisitor._numInstancedLOD));
                stats->setAttribute(frameNumber, "Number of instanced Switch", static_cast<double>(statsVisitor._numInstancedSwitch));
                stats->setAttribute(frameNumber, "Number of instanced Geode", static_cast<double>(statsVisitor._numInstancedGeode));
                stats->setAttribute(frameNumber, "Number of instanced Drawable", static_cast<double>(statsVisitor._numInstancedDrawable));
                stats->setAttribute(frameNumber, "Number of instanced Geometry", static_cast<double>(statsVisitor._numInstancedGeometry));
                stats->setAttribute(frameNumber, "Number of instanced Vertices", static_cast<double>(statsVisitor._instancedStats._vertexCount));
                stats->setAttribute(frameNumber, "Number of instanced Primitives", static_cast<double>(instanced_primitives));
           }
        }
    }

    Scenes scenes;
    getScenes(scenes);

    for(Scenes::iterator sitr = scenes.begin();
        sitr != scenes.end();
        ++sitr)
    {
        Scene* scene = *sitr;
        osgDB::DatabasePager* dp = scene ? scene->getDatabasePager() : 0;
        if (dp) dp->signalBeginFrame(frameStamp);

        osgDB::ImagePager* ip = scene ? scene->getImagePager() : 0;
        if (ip) ip->signalBeginFrame(frameStamp);

        if (scene->getSceneData())
        {
            // fire off a build of the bounding volumes while we
            // are still running single threaded.
            scene->getSceneData()->getBound();
        }
    }

    // OSG_NOTICE<<std::endl<<"Start frame"<<std::endl;


    Cameras cameras;
    getCameras(cameras);

    Contexts::iterator itr;

    bool doneMakeCurrentInThisThread = false;

    if (_endDynamicDrawBlock.valid())
    {
        _endDynamicDrawBlock->reset();
    }

    // dispatch the rendering threads
    if (_startRenderingBarrier.valid()) _startRenderingBarrier->block();

    // reset any double buffer graphics objects
    for(Cameras::iterator camItr = cameras.begin();
        camItr != cameras.end();
        ++camItr)
    {
        osg::Camera* camera = *camItr;
        Renderer* renderer = dynamic_cast<Renderer*>(camera->getRenderer());
        if (renderer)
        {
            if (!renderer->getGraphicsThreadDoesCull() && !(camera->getCameraThread()))
            {
                renderer->cull();
            }
        }
    }

    for(itr = contexts.begin();
        itr != contexts.end() && !_done;
        ++itr)
    {
        if (!((*itr)->getGraphicsThread()) && (*itr)->valid())
        {
            doneMakeCurrentInThisThread = true;
            makeCurrent(*itr);
            (*itr)->runOperations();
        }
    }

    // OSG_NOTICE<<"Joing _endRenderingDispatchBarrier block "<<_endRenderingDispatchBarrier.get()<<std::endl;

    // wait till the rendering dispatch is done.
    if (_endRenderingDispatchBarrier.valid()) _endRenderingDispatchBarrier->block();

    for(itr = contexts.begin();
        itr != contexts.end() && !_done;
        ++itr)
    {
        if (!((*itr)->getGraphicsThread()) && (*itr)->valid())
        {
            doneMakeCurrentInThisThread = true;
            makeCurrent(*itr);
            (*itr)->swapBuffers();
        }
    }

    for(Scenes::iterator sitr = scenes.begin();
        sitr != scenes.end();
        ++sitr)
    {
        Scene* scene = *sitr;
        osgDB::DatabasePager* dp = scene ? scene->getDatabasePager() : 0;
        if (dp) dp->signalEndFrame();

        osgDB::ImagePager* ip = scene ? scene->getImagePager() : 0;
        if (ip) ip->signalEndFrame();
    }

    // wait till the dynamic draw is complete.
    if (_endDynamicDrawBlock.valid())
    {
        // osg::Timer_t startTick = osg::Timer::instance()->tick();
        _endDynamicDrawBlock->block();
        // OSG_NOTICE<<"Time waiting "<<osg::Timer::instance()->delta_m(startTick, osg::Timer::instance()->tick())<<std::endl;;
    }

    if (_releaseContextAtEndOfFrameHint && doneMakeCurrentInThisThread)
    {
        //OSG_NOTICE<<"Doing release context"<<std::endl;
        releaseContext();
    }

    if (getViewerStats() && getViewerStats()->collectStats("update"))
    {
        double endRenderingTraversals = elapsedTime();

        // update current frames stats
        getViewerStats()->setAttribute(frameStamp->getFrameNumber(), "Rendering traversals begin time ", beginRenderingTraversals);
        getViewerStats()->setAttribute(frameStamp->getFrameNumber(), "Rendering traversals end time ", endRenderingTraversals);
        getViewerStats()->setAttribute(frameStamp->getFrameNumber(), "Rendering traversals time taken", endRenderingTraversals-beginRenderingTraversals);
    }

    _requestRedraw = false;
}
예제 #4
0
파일: ViewerBase.cpp 프로젝트: 3dcl/osg
void ViewerBase::stopThreading()
{
    if (!_threadsRunning) return;

    OSG_INFO<<"ViewerBase::stopThreading() - stopping threading"<<std::endl;

    Contexts contexts;
    getContexts(contexts);

    Cameras cameras;
    getCameras(cameras);

    Contexts::iterator gcitr;
    Cameras::iterator citr;

    for(Cameras::iterator camItr = cameras.begin();
        camItr != cameras.end();
        ++camItr)
    {
        osg::Camera* camera = *camItr;
        Renderer* renderer = dynamic_cast<Renderer*>(camera->getRenderer());
        if (renderer) renderer->release();
    }

    // delete all the graphics threads.
    for(gcitr = contexts.begin();
        gcitr != contexts.end();
        ++gcitr)
    {
        (*gcitr)->setGraphicsThread(0);
    }

    // delete all the camera threads.
    for(citr = cameras.begin();
        citr != cameras.end();
        ++citr)
    {
        (*citr)->setCameraThread(0);
    }

    for(Cameras::iterator camItr = cameras.begin();
        camItr != cameras.end();
        ++camItr)
    {
        osg::Camera* camera = *camItr;
        Renderer* renderer = dynamic_cast<Renderer*>(camera->getRenderer());
        if (renderer)
        {
            renderer->setGraphicsThreadDoesCull( true );
            renderer->setDone(false);
        }
    }


    _threadsRunning = false;
    _startRenderingBarrier = 0;
    _endRenderingDispatchBarrier = 0;
    _endDynamicDrawBlock = 0;

    OSG_INFO<<"Viewer::stopThreading() - stopped threading."<<std::endl;
}