Exemplo n.º 1
0
int main(void) {
    srand(time(NULL)); // initialize pseudo random number generator

    ref_ptr<CompositeViewer> viewer = new CompositeViewer();

    ref_ptr<ph::MainView> mainView = new ph::MainView();
    ref_ptr<ph::ShipView> shipView = new ph::ShipView(mainView->getScene());
    ref_ptr<ph::KeyboardEventHandler> handler = new ph::KeyboardEventHandler(mainView.get());
    shipView->addEventHandler(handler.get());

    unsigned int width, height;
    GraphicsContext::WindowingSystemInterface* wsi = GraphicsContext::getWindowingSystemInterface();
    wsi->getScreenResolution(osg::GraphicsContext::ScreenIdentifier(0), width, height);

    // setup window properties
    ref_ptr<GraphicsContext::Traits> traits = new GraphicsContext::Traits;
    traits->x = 0;
    traits->y = 0;
    traits->width = width;
    traits->height = height;
    traits->windowDecoration = false;
    traits->doubleBuffer = true;
    traits->sharedContext = 0;

    ref_ptr<GraphicsContext> context = GraphicsContext::createGraphicsContext(traits.get());
    shipView->getCamera()->setGraphicsContext(context.get());
    mainView->getCamera()->setGraphicsContext(context.get());

    shipView->getCamera()->setViewport(new Viewport(0, 0, width, height));
    viewer->addView(shipView);    

    //                                                  x,           y 
    mainView->getCamera()->setViewport(new Viewport(width-20-width/4, 20,
    //                                                  width,    height
                                                    width/4, height/4));
    viewer->addView(mainView);

    return viewer->run();
}
Exemplo n.º 2
0
// Standard OSG code for initializing osgViewer::Viewer with explicit
// creation of own graphics context. This is also a good time to test
// for valid frame buffer configurations; we have a valid graphics
// context, but multithreading hasn't started, etc.
GraphicsContext* setupGC(osgViewer::Viewer& viewer, ArgumentParser& arguments)
{
    int x = -1, y = -1, width = -1, height = -1;
    while (arguments.read("--window",x,y,width,height)) {}

    GraphicsContext::WindowingSystemInterface* wsi =
        GraphicsContext::getWindowingSystemInterface();
    if (!wsi)
    {
        OSG_NOTIFY(NOTICE)<<"View::setUpViewOnSingleScreen() : Error, no WindowSystemInterface available, cannot create windows."<<std::endl;
        return 0;
    }

    DisplaySettings* ds = viewer.getDisplaySettings() ? viewer.getDisplaySettings() : DisplaySettings::instance().get();
    GraphicsContext::ScreenIdentifier si;
    si.readDISPLAY();

    // displayNum has not been set so reset it to 0.
    if (si.displayNum<0) si.displayNum = 0;

    bool decoration = true;
    if (x < 0)
    {
        unsigned int w, h;
        wsi->getScreenResolution(si, w, h);
        x = 0;
        y = 0;
        width = w;
        height = h;
        decoration = false;
    }

    ref_ptr<GraphicsContext::Traits> traits
        = new GraphicsContext::Traits(ds);
    traits->hostName = si.hostName;
    traits->displayNum = si.displayNum;
    traits->screenNum = si.screenNum;
    traits->x = x;
    traits->y = y;
    traits->width = width;
    traits->height = height;
    traits->windowDecoration = decoration;
    traits->doubleBuffer = true;
    traits->sharedContext = 0;
    ref_ptr<GraphicsContext> gc
        = GraphicsContext::createGraphicsContext(traits.get());
    osgViewer::GraphicsWindow* gw
        = dynamic_cast<osgViewer::GraphicsWindow*>(gc.get());
    if (gw)
    {
        OSG_NOTIFY(INFO)<<"View::setUpViewOnSingleScreen - GraphicsWindow has been created successfully."<<std::endl;
        gw->getEventQueue()->getCurrentEventState()
            ->setWindowRectangle(0, 0, width, height);
    }
    else
    {
        OSG_NOTIFY(NOTICE)<<"  GraphicsWindow has not been created successfully."<<std::endl;
    }
    double fovy, aspectRatio, zNear, zFar;
    viewer.getCamera()->getProjectionMatrixAsPerspective(fovy, aspectRatio,
                                                         zNear, zFar);
    double newAspectRatio = double(traits->width) / double(traits->height);
    double aspectRatioChange = newAspectRatio / aspectRatio;
    if (aspectRatioChange != 1.0)
    {
        viewer.getCamera()->getProjectionMatrix()
            *= Matrix::scale(1.0/aspectRatioChange,1.0,1.0);
    }
    // Context has to be current to test for extensions
    gc->realize();
    gc->makeCurrent();
    unsigned int contextID = gc->getState()->getContextID();
    FBOExtensions* fboe = FBOExtensions::instance(contextID, true);
    if (!fboe->isSupported())
    {
        OSG_NOTIFY(NOTICE) << "Frame buffer objects are not supported\n";
        gc->releaseContext();
        gc->close(true);
        return 0;
    }
    if (isGLExtensionSupported(contextID, "GL_ARB_depth_buffer_float"))
        depthTextureEnum = GL_DEPTH_COMPONENT32F;
    else if (isGLExtensionSupported(contextID, "GL_NV_depth_buffer_float"))
        depthTextureEnum = GL_DEPTH_COMPONENT32F_NV;
    BufferConfigList colorConfigs;
    BufferConfigList depthConfigs;
    vector<int> coverageConfigs;
    getPossibleConfigs(gc.get(), colorConfigs, depthConfigs, coverageConfigs);
    int coverageSampleConfigs = (coverageConfigs.size() - 4) / 2;
    cout << "color configs\nname\tbits\n";
    for (BufferConfigList::const_iterator colorItr = colorConfigs.begin(),
             colorEnd = colorConfigs.end();
         colorItr != colorEnd;
         ++colorItr)
    {
        for (BufferConfigList::const_iterator depthItr = depthConfigs.begin(),
             depthEnd = depthConfigs.end();
             depthItr != depthEnd;
             ++depthItr)
        {
            string root = colorItr->name + " " + depthItr->name;
            FboConfig config(root, colorItr->format, depthItr->format,
                             colorItr->bits, depthItr->bits);
            FboData data;
            if (createFBO(gc.get(), config, data))
                validConfigs.push_back(config);
            destroyFBO(gc.get(), data);
            if (coverageConfigs.size() > 0)
            {
                //CSAA provides a list of all supported AA modes for
                //quick enumeration
                for (int kk = 0; kk < coverageSampleConfigs; kk++)
                {
                    stringstream msText;
                    msText << root;
                    config.depthSamples = coverageConfigs[kk*2+1];
                    config.coverageSamples = coverageConfigs[kk*2];

                    if ( config.coverageSamples == config.depthSamples )
                    {
                        // Normal antialiasing
                        msText << " - " << config.depthSamples << " MSAA";
                    }
                    else
                    {
                        // coverage antialiasing
                        msText << " - " << config.coverageSamples << "/"
                               << config.depthSamples << " CSAA";
                    }
                    config.name = msText.str();

                    if (createFBO(gc.get(), config, data)) {
                        validConfigs.push_back( config);
                    }
                    destroyFBO(gc.get(), data);
                }
            }
        }
    }
    if (validConfigs.empty())
    {
        cout << "no valid frame buffer configurations!\n";
        return 0;
    }
    cout << "valid frame buffer configurations:\n";
    for (vector<FboConfig>::iterator itr = validConfigs.begin(),
             end = validConfigs.end();
         itr != end;
         ++itr)
        cout << itr->name << "\n";
    gc->releaseContext();

    return gc.release();
}