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();
}
// 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();
}
