FGFS-4.1/OpenSceneGraph
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Introduce new run frame rate management support to allow control of maximum frame rate and to support on demand rendering of frames

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This commit is contained in:
Robert Osfield
2009-04-24 16:20:50 +00:00
parent 860ae27faf
commit a50f0ccfaf
10 changed files with 198 additions and 57 deletions
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48
src/osgViewer/CompositeViewer.cpp
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@@ -37,7 +37,17 @@ CompositeViewer::CompositeViewer(const CompositeViewer& cv,const osg::CopyOp& co
CompositeViewer::CompositeViewer(osg::ArgumentParser& arguments)
{
constructorInit();
arguments.getApplicationUsage()->addCommandLineOption("--SingleThreaded","Select SingleThreaded threading model for viewer.");
arguments.getApplicationUsage()->addCommandLineOption("--CullDrawThreadPerContext","Select CullDrawThreadPerContext threading model for viewer.");
arguments.getApplicationUsage()->addCommandLineOption("--DrawThreadPerContext","Select DrawThreadPerContext threading model for viewer.");
arguments.getApplicationUsage()->addCommandLineOption("--CullThreadPerCameraDrawThreadPerContext","Select CullThreadPerCameraDrawThreadPerContext threading model for viewer.");
arguments.getApplicationUsage()->addCommandLineOption("--run-on-demand","Set the run methods frame rate management to only rendering frames when required.");
arguments.getApplicationUsage()->addCommandLineOption("--run-continuous","Set the run methods frame rate management to rendering frames continuously.");
arguments.getApplicationUsage()->addCommandLineOption("--run-max-frame-rate","Set the run methods maximum permissable frame rate, 0.0 is default and switching off frame rate capping.");
std::string filename;
bool readConfig = false;
while (arguments.read("-c",filename))
@@ -50,6 +60,14 @@ CompositeViewer::CompositeViewer(osg::ArgumentParser& arguments)
while (arguments.read("--DrawThreadPerContext")) setThreadingModel(DrawThreadPerContext);
while (arguments.read("--CullThreadPerCameraDrawThreadPerContext")) setThreadingModel(CullThreadPerCameraDrawThreadPerContext);
while(arguments.read("--run-on-demand")) { setRunFrameScheme(ON_DEMAND); }
while(arguments.read("--run-continuous")) { setRunFrameScheme(CONTINUOUS); }
double runMaxFrameRate;
while(arguments.read("--run-max-frame-rate", runMaxFrameRate)) { setRunMaxFrameRate(runMaxFrameRate); }
osg::DisplaySettings::instance()->readCommandLine(arguments);
osgDB::readCommandLine(arguments);
}
@@ -222,6 +240,34 @@ bool CompositeViewer::isRealized() const
return numRealizedWindows > 0;
}
bool CompositeViewer::checkNeedToDoFrame()
{
if (_requestRedraw) return true;
if (_requestContinousUpdate) return true;
for(RefViews::iterator itr = _views.begin();
itr != _views.end();
++itr)
{
osgViewer::View* view = itr->get();
if (view)
{
// If the database pager is going to update the scene the render flag is
// set so that the updates show up
if (view->getDatabasePager()->requiresUpdateSceneGraph() ||
view->getDatabasePager()->getRequestsInProgress()) return true;
}
}
// now do a eventTraversal to see if any events might require a new frame.
eventTraversal();
if (_requestRedraw) return true;
if (_requestContinousUpdate) return true;
return false;
}
int CompositeViewer::run()
{
for(RefViews::iterator itr = _views.begin();