FGFS-4.1/OpenSceneGraph
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Added optional set up of pbuffers for background compilation of the OpenGL objects

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when database paging.
This commit is contained in:
Robert Osfield 2007-06-22 14:48:43 +00:00
parent 1b3468413d
commit 4a315e47fe
1 changed files with 61 additions and 0 deletions
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61
applications/osgviewer/osgviewer.cpp
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@ -74,6 +74,12 @@ int main(int argc, char** argv)
return 1;
}
bool createBackgroundContextForCompiling = false;
while (arguments.read("--bc")) { createBackgroundContextForCompiling = true; }
bool createBackgroundThreadsForCompiling = false;
while (arguments.read("--bt")) { createBackgroundContextForCompiling = true; createBackgroundThreadsForCompiling = true; }
// set up the camera manipulators.
{
osg::ref_ptr<osgGA::KeySwitchMatrixManipulator> keyswitchManipulator = new osgGA::KeySwitchMatrixManipulator;
@ -143,5 +149,60 @@ int main(int argc, char** argv)
viewer.setSceneData( loadedModel.get() );
viewer.realize();
if (createBackgroundContextForCompiling)
{
int numProcessors = OpenThreads::GetNumberOfProcessors();
int processNum = 0;
osgDB::DatabasePager* dp = viewer.getScene()->getDatabasePager();
typedef std::vector< osg::ref_ptr<osg::GraphicsContext> > CompileContexts;
CompileContexts compileContexts;
osgViewer::Viewer::Windows windows;
viewer.getWindows(windows);
for(osgViewer::Viewer::Windows::iterator itr = windows.begin();
itr != windows.end();
++itr)
{
const osg::GraphicsContext::Traits* src_traits = (*itr)->getTraits();
osg::GraphicsContext::Traits* traits = new osg::GraphicsContext::Traits;
traits->screenNum = src_traits->screenNum;
traits->displayNum = src_traits->displayNum;
traits->hostName = src_traits->hostName;
traits->width = 100;
traits->height = 100;
traits->red = src_traits->red;
traits->green = src_traits->green;
traits->blue = src_traits->blue;
traits->alpha = src_traits->alpha;
traits->depth = src_traits->depth;
traits->sharedContext = (*itr);
traits->pbuffer = true;
osg::GraphicsContext* gc = osg::GraphicsContext::createGraphicsContext(traits);
gc->realize();
if (createBackgroundThreadsForCompiling)
{
gc->createGraphicsThread();
gc->getGraphicsThread()->setProcessorAffinity(processNum % numProcessors);
gc->getGraphicsThread()->startThread();
++processNum;
}
dp->addCompileGraphicsContext(gc);
compileContexts.push_back(gc);
}
}
return viewer.run();
}