/**
* Adds predraw callbacks to the osg cameras to provide callback to our algorithm
*/
void CullingMultiGPURender::setupDrawHook()
{
int index = 0;
Viewer::Contexts contexts;
CVRViewer::instance()->getContexts(contexts);
for(Viewer::Contexts::iterator citr = contexts.begin(); citr != contexts.end(); ++citr)
{
GraphicsWindow* gw = dynamic_cast<GraphicsWindow*>(*citr);
if(gw->getTraits()->screenNum >= _numGPUs)
{
continue;
}
osg::GraphicsContext::Cameras& cameras = gw->getCameras();
for(osg::GraphicsContext::Cameras::iterator citr = cameras.begin(); citr != cameras.end(); ++citr)
{
PreDrawHook * pdh = new PreDrawHook(new ChcPreDrawCallback(index++, _renderer->getNumGPUs(), _chcAnimate));
osg::Camera* camera = *citr;
camera->setPreDrawCallback(pdh);
_drawHookList.push_back(pdh);
}
}
}
/**
* Initialization function for the plugin called once when loaded.
*
* Reads configuration from config file, initializes animation and renderer objects,
* sets up callbacks
*
* @return init status, true if good, false otherwise
*/
bool CullingMultiGPURender::init()
{
int w,h;
bool geo;
DepthBits db;
std::string filename;
TextureCopyType copyType;
// window size for multigpu rendering
w = ConfigManager::getInt("Plugin.CullingMultiGPURender.Width");
h = ConfigManager::getInt("Plugin.CullingMultiGPURender.Height");
// geometry shaded normals or not
geo = ConfigManager::getBool("Plugin.CullingMultiGPURender.GeometryShader");
// file to load
filename = ConfigManager::getEntry("Plugin.CullingMultiGPURender.FileName");
// how many bits to use for depth buffers
int bits = ConfigManager::getInt("Plugin.CullingMultiGPURender.DepthBuffer");
// method used to copy textures
std::string tcopy = ConfigManager::getEntry("Plugin.CullingMultiGPURender.TextureCopy");
// convert bits into enum value
if(bits == 16)
{
db = D16;
}
else if(bits == 24)
{
db = D24;
}
else
{
db = D32;
}
// convert texture copy type into enum value
if(tcopy == "PBOS")
{
copyType = PBOS;
}
else if(tcopy == "CUDA_COPY")
{
copyType = CUDA_COPY;
}
else
{
copyType = READ_PIX;
}
// create the renderer
_renderer = new MultiGPURenderer(w,h,geo,copyType,db);
// find out how many gpus we should be using
_numGPUs = _renderer->getNumGPUs();
// get access to a camera for modelviewprojection calculation and eye position
Viewer::Contexts contexts;
CVRViewer::instance()->getContexts(contexts);
GraphicsWindow* gw = dynamic_cast<GraphicsWindow*>(*contexts.begin());
osg::GraphicsContext::Cameras& cameras = gw->getCameras();
_camera = *cameras.begin();
// initalize the ChcAnimate frame work
//std::string filename("/home/covise/data/covise/philip/chcplusframe/convert2/fourcarsolidfixPlot"); // temp placement
//filename = "/fastdata/honda/veryLargeFinal"; // temp placement
//filename = "/data/covise/philip/chcplusframe/convert2/temp/Large15Deep"; // temp placement
//filename = "/fastdata/honda/LargeDeep"; // temp placement
//filename = "/home/aprudhom/data/honda/small-chc/smallPlot"; // andrew's system
//filename = "/remote/temp/veryLargeFinal"; // temp placement
printf("Number of gpus found is %d\n", _renderer->getNumGPUs());
// create and init animation managment class
_chcAnimate = new ChcAnimate(filename, _renderer->getNumGPUs());
_renderer->setPartMap( (std::map<int, PartInfo*> *) _chcAnimate->getGeometryMap());
// register parts list per gpu with renderer
for(int i = 0; i < _renderer->getNumGPUs(); i++)
{
_renderer->setPartList(i, *_chcAnimate->getPartList(i));
}
// create drawable for osg render traversal callback
_drawable = new CallbackDrawable(_renderer, _chcAnimate, _renderer->getNumGPUs());
_geode = new Geode();
_geode->addDrawable(_drawable.get());
_geode->setDataVariance(osg::Object::STATIC);
SceneManager::instance()->getObjectsRoot()->addChild(_geode);
//SceneManager::instance()->getScene()->addChild(_geode);
// setup predraw hook on osg cameras
setupDrawHook();
// replace osg stats graph with our custom one for different stat measurments
osgViewer::View::EventHandlers eh = CVRViewer::instance()->getEventHandlers();
std::cerr << "Viewer has " << eh.size() << " event handlers." << std::endl;
for(osgViewer::View::EventHandlers::iterator it = eh.begin(); it != eh.end(); it++)
{
if(dynamic_cast<osgViewer::StatsHandler*>((*it).get()))
{
std::cerr << "Found Stats Handler." << std::endl;
CVRViewer::instance()->removeEventHandler((*it).get());
}
}
CustomStatsHandler * csh = new CustomStatsHandler(_renderer->getNumGPUs());
csh->setKeyEventTogglesOnScreenStats((int)'S');
csh->setKeyEventPrintsOutStats((int)'P');
CVRViewer::instance()->addEventHandler(csh);
return true;
}
