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campvisapplication.cpp 9.38 KB
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// ================================================================================================
// 
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// This file is part of the CAMPVis Visualization Framework.
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// 
// If not explicitly stated otherwise: Copyright (C) 2012, all rights reserved,
//      Christian Schulte zu Berge (christian.szb@in.tum.de)
//      Chair for Computer Aided Medical Procedures
//      Technische Universitt Mnchen
//      Boltzmannstr. 3, 85748 Garching b. Mnchen, Germany
// 
// The licensing of this softare is not yet resolved. Until then, redistribution in source or
// binary forms outside the CAMP chair is not permitted, unless explicitly stated in legal form.
// However, the names of the original authors and the above copyright notice must retain in its
// original state in any case.
// 
// Legal disclaimer provided by the BSD license:
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY 
// AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 
// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
// 
// ================================================================================================

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#include "campvisapplication.h"
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#include "tgt/assert.h"
#include "tgt/exception.h"
#include "tgt/glcontext.h"
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#include "tgt/gpucapabilities.h"
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#include "tgt/shadermanager.h"
#include "tgt/qt/qtapplication.h"
#include "tgt/qt/qtthreadedcanvas.h"
#include "tgt/qt/qtcontextmanager.h"
#include "tbb/include/tbb/compat/thread"

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#include "kisscl/clruntime.h"

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#include "application/campvispainter.h"
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#include "application/gui/mainwindow.h"
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#include "core/tools/opengljobprocessor.h"
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#include "core/tools/quadrenderer.h"
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#include "core/pipeline/abstractpipeline.h"
#include "core/pipeline/visualizationpipeline.h"
#include "core/pipeline/pipelineevaluator.h"

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namespace campvis {
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    const std::string CampVisApplication::loggerCat_ = "CAMPVis.application.CampVisApplication";
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    CampVisApplication::CampVisApplication(int argc, char** argv, bool useOpenCL) 
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        : QApplication(argc, argv)
        , _localContext(0)
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        , _mainWindow(0)
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        , _initialized(false)
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        , _useOpenCL(useOpenCL)
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        , _argc(argc)
        , _argv(argv)
    {
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        // Make Xlib and GLX thread safe under X11
        QApplication::setAttribute(Qt::AA_X11InitThreads);
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        _mainWindow = new MainWindow(this);
        tgt::QtContextManager::init();
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        OpenGLJobProcessor::init();
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    }

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    CampVisApplication::~CampVisApplication() {
        tgtAssert(_initialized == false, "Destructing initialized CampVisApplication, deinitialize first!");
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        // delete everything in the right order:
        for (std::vector<PipelineEvaluator*>::iterator it = _pipelineEvaluators.begin(); it != _pipelineEvaluators.end(); ++it) {
            delete *it;
        }
        for (std::vector< std::pair<VisualizationPipeline*, TumVisPainter*> >::iterator it = _visualizations.begin(); it != _visualizations.end(); ++it) {
            delete it->second;
        }
        for (std::vector<AbstractPipeline*>::iterator it = _pipelines.begin(); it != _pipelines.end(); ++it) {
            delete *it;
        }
    }

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    void CampVisApplication::init() {
        tgtAssert(_initialized == false, "Tried to initialize CampVisApplication twice.");
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        // Init TGT
        tgt::InitFeature::Features featureset = tgt::InitFeature::ALL;
        tgt::init(featureset);
        LogMgr.getConsoleLog()->addCat("", true);

        // create a local OpenGL context and init GL
        _localContext = CtxtMgr.createContext("AppContext", "", tgt::ivec2(16, 16));
        tgtAssert(_localContext != 0, "Could not create local OpenGL context");
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        tgt::GLContextScopedLock lock(_localContext->getContext());

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        tgt::initGL(featureset);
        LGL_ERROR;

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        // ensure matching OpenGL specs
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        if (GpuCaps.getGlVersion() < tgt::GpuCapabilities::GlVersion::TGT_GL_VERSION_3_3) {
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            LERROR("Your system does not support OpenGL 3.3, which is mandatory. CAMPVis will probably not work as intendet.");
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        }
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        if (GpuCaps.getShaderVersion() < tgt::GpuCapabilities::GlVersion::SHADER_VERSION_330) {
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            LERROR("Your system does not support GLSL Shader Version 3.30, which is mandatory. CAMPVis will probably not work as intendet.");
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        }

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        QuadRenderer::init();

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        if (_useOpenCL) {
            kisscl::CLRuntime::init();
        }

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        if (_argc > 0) {
            // ugly hack
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            std::string basePath(_argv[0]);
            basePath = tgt::FileSystem::parentDir(tgt::FileSystem::parentDir(tgt::FileSystem::parentDir(basePath)));
            ShdrMgr.addPath(basePath);
            ShdrMgr.addPath(basePath + "/core/glsl");

            if (_useOpenCL) {
                CLRtm.addPath(basePath);
                CLRtm.addPath(basePath + "/core/cl");
            }
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        }

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        _mainWindow->init();

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        // init pipeline first
        for (std::vector<AbstractPipeline*>::iterator it = _pipelines.begin(); it != _pipelines.end(); ++it) {
            (*it)->init();
        }

        // Now init painters:
        for (std::vector< std::pair<VisualizationPipeline*, TumVisPainter*> >::iterator it = _visualizations.begin(); it != _visualizations.end(); ++it) {
            it->second->init();
        }

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        GLJobProc.start();
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        _initialized = true;
    }

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    void CampVisApplication::deinit() {
        tgtAssert(_initialized, "Tried to deinitialize uninitialized CampVisApplication.");
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        GLJobProc.stop();

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        {
            // Deinit everything OpenGL related using the local context.
            tgt::GLContextScopedLock lock(_localContext->getContext());
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            // Deinit pipeline first
            for (std::vector<AbstractPipeline*>::iterator it = _pipelines.begin(); it != _pipelines.end(); ++it) {
                (*it)->deinit();
            }

            // Now deinit painters:
            for (std::vector< std::pair<VisualizationPipeline*, TumVisPainter*> >::iterator it = _visualizations.begin(); it != _visualizations.end(); ++it) {
                it->second->deinit();
            }

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            _mainWindow->deinit();

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            // deinit OpenGL and tgt
            tgt::deinitGL();
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            QuadRenderer::deinit();

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            if (_useOpenCL) {
                kisscl::CLRuntime::deinit();
            }
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        }

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        OpenGLJobProcessor::deinit();

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        tgt::QtContextManager::deinit();
        tgt::deinit();

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        // MainWindow dtor needs a valid CampVisApplication, so we need to call it here instead of during destruction.
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        delete _mainWindow;

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        _initialized = false;
    }

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    int CampVisApplication::run() {
        tgtAssert(_initialized, "Tried to run uninitialized CampVisApplication.");
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        // disconnect OpenGL context from this thread so that the other threads can acquire an OpenGL context.
        CtxtMgr.releaseCurrentContext();

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        _mainWindow->show();

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        // Start evaluator/render threads
        for (std::vector<PipelineEvaluator*>::iterator it = _pipelineEvaluators.begin(); it != _pipelineEvaluators.end(); ++it) {
            (*it)->start();
        }

        // Start QApplication
        int toReturn = QApplication::exec();

        // QApplication has returned -> Stop evaluator/render threads
        for (std::vector<PipelineEvaluator*>::iterator it = _pipelineEvaluators.begin(); it != _pipelineEvaluators.end(); ++it) {
            (*it)->stop();
        }

        return toReturn;
    }

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    void CampVisApplication::addPipeline(AbstractPipeline* pipeline) {
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        tgtAssert(_initialized == false, "Adding pipelines after initialization is currently not supported.");
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        tgtAssert(pipeline != 0, "Pipeline must not be 0.");
        _pipelines.push_back(pipeline);

        PipelineEvaluator* pe = new PipelineEvaluator(pipeline);
        _pipelineEvaluators.push_back(pe);
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        s_PipelinesChanged();
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    }

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    void CampVisApplication::addVisualizationPipeline(const std::string& name, VisualizationPipeline* vp) {
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        tgtAssert(_initialized == false, "Adding pipelines after initialization is currently not supported.");
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        tgtAssert(vp != 0, "Pipeline must not be 0.");

        // create canvas and painter for the VisPipeline and connect all together
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        tgt::QtThreadedCanvas* canvas = CtxtMgr.createContext(name, "CAMPVis", tgt::ivec2(512, 512));
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        GLJobProc.registerContext(canvas);
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        canvas->init();

        TumVisPainter* painter = new TumVisPainter(canvas, vp);
        canvas->setPainter(painter, false);

        _visualizations.push_back(std::make_pair(vp, painter));
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        vp->setCanvas(canvas);
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        addPipeline(vp);
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        CtxtMgr.releaseCurrentContext();
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    }

}