FGFS-4.1/OpenSceneGraph
4
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Merged the threading set up and rendering code from Viewer and CompositeViewer

Browse Source 
into ViewerBase to allow CompositeViewer to inherit the same theading models
previously just supported by osgViewer::Viewer
This commit is contained in:
Robert Osfield
2007-10-02 21:23:58 +00:00
parent 43a243c161
commit caeed02f52
6 changed files with 820 additions and 1180 deletions
Download Patch File Download Diff File Expand all files Collapse all files

99
include/osgViewer/ViewerBase
View File

@@ -71,11 +71,43 @@ class OSGVIEWER_EXPORT ViewerBase : public virtual osg::Object
};
/** Set the threading model the rendering traversals will use.*/
virtual void setThreadingModel(ThreadingModel threadingModel) = 0;
virtual void setThreadingModel(ThreadingModel threadingModel);
/** Get the threading model the rendering traversals will use.*/
ThreadingModel getThreadingModel() const { return _threadingModel; }
/** Let the viewer suggest the best threading model for the viewers camera/window setup and the hardware available.*/
virtual ThreadingModel suggestBestThreadingModel();
/** Set up the threading and processor affinity as per the viewers threading model.*/
virtual void setUpThreading();
/** Return true if viewer threads are running. */
bool areThreadsRunning() const { return _threadsRunning; }
/** Stop any threads begin run by viewer.*/
virtual void stopThreading();
/** Start any threads required by the viewer.*/
virtual void startThreading();
enum BarrierPosition
{
BeforeSwapBuffers,
AfterSwapBuffers
};
/** Set the position of the end barrier.
* AfterSwapBuffers will may result is slightly higher framerates, by may
* lead to inconcistent swapping between different windows.
* BeforeSwapBuffers may lead to slightly lower framerate, but improve consistency in timing of swap buffers,
* especially important if you are likely to consistently break frame.*/
void setEndBarrierPosition(BarrierPosition bp);
/** Get the end barrier position.*/
BarrierPosition getEndBarrierPosition() const { return _endBarrierPosition; }
/** Set the done flag to singnal the viewer's work is done and should exit the frame loop.*/
void setDone(bool done) { _done = done; }
@@ -135,6 +167,18 @@ class OSGVIEWER_EXPORT ViewerBase : public virtual osg::Object
void removeUpdateOperation(osg::Operation* operation);
/** Set the graphics operation to call on realization of the viewers graphics windows.*/
void setRealizeOperation(osg::Operation* op) { _realizeOperation = op; }
/** Get the graphics operation to call on realization of the viewers graphics windows.*/
osg::Operation* getRealizeOperation() { return _realizeOperation.get(); }
/** Check to see if windows are still open, if not set viewer done to true. */
void checkWindowStatus();
/** Execute a main frame loop.
* Equivialant to while (!viewer.done()) viewer.frame();
* Also calls realize() if the viewer is not already realized,
@@ -144,7 +188,7 @@ class OSGVIEWER_EXPORT ViewerBase : public virtual osg::Object
/** Render a complete new frame.
* Calls advance(), eventTraversal(), updateTraversal(), renderingTraversals(). */
virtual void frame(double simulationTime=USE_REFERENCE_TIME) = 0;
virtual void frame(double simulationTime=USE_REFERENCE_TIME);
virtual void advance(double simulationTime=USE_REFERENCE_TIME) = 0;
@@ -152,7 +196,7 @@ class OSGVIEWER_EXPORT ViewerBase : public virtual osg::Object
virtual void updateTraversal() = 0;
virtual void renderingTraversals() = 0;
virtual void renderingTraversals();
typedef std::vector<osg::Camera*> Cameras;
virtual void getCameras(Cameras& cameras, bool onlyActive=true) = 0;
@@ -175,38 +219,51 @@ class OSGVIEWER_EXPORT ViewerBase : public virtual osg::Object
typedef std::vector<osgViewer::View*> Views;
virtual void getViews(Views& views, bool onlyValid=true) = 0;
virtual double elapsedTime() = 0;
/** Set the graphics operation to call on realization of the viewers graphics windows.*/
void setRealizeOperation(osg::Operation* op) { _realizeOperation = op; }
/** Get the graphics operation to call on realization of the viewers graphics windows.*/
osg::Operation* getRealizeOperation() { return _realizeOperation.get(); }
/** Set up the threading and processor affinity as per the viewers threading model.*/
virtual void setUpThreading() = 0;
/** Return true if viewer threads are running. */
bool areThreadsRunning() const { return _threadsRunning; }
/** Stop any threads begin run by viewer.*/
virtual void stopThreading() = 0;
/** Start any threads required by the viewer.*/
virtual void startThreading() = 0;
virtual osg::FrameStamp* getViewerFrameStamp() = 0;
/** Get the keyboard and mouse usage of this viewer.*/
virtual void getUsage(osg::ApplicationUsage& usage) const = 0;
protected:
inline void makeCurrent(osg::GraphicsContext* gc)
{
if (_currentContext==gc) return;
releaseContext();
if (gc && gc->valid() && gc->makeCurrent()) _currentContext = gc;
}
inline void releaseContext()
{
if (_currentContext.valid() && _currentContext->valid())
{
_currentContext->releaseContext();
}
_currentContext = 0;
}
virtual void viewerInit() = 0;
osg::ref_ptr<osg::Stats> _stats;
bool _firstFrame;
bool _done;
int _keyEventSetsDone;
bool _quitEventSetsDone;
ThreadingModel _threadingModel;
bool _threadsRunning;
BarrierPosition _endBarrierPosition;
osg::ref_ptr<osg::BarrierOperation> _startRenderingBarrier;
osg::ref_ptr<osg::BarrierOperation> _endRenderingDispatchBarrier;
osg::ref_ptr<osg::EndOfDynamicDrawBlock> _endDynamicDrawBlock;
osg::ref_ptr<osgGA::EventVisitor> _eventVisitor;
@@ -215,7 +272,9 @@ class OSGVIEWER_EXPORT ViewerBase : public virtual osg::Object
osg::ref_ptr<osg::Operation> _realizeOperation;
osg::observer_ptr<osg::GraphicsContext> _currentContext;
};
}
#endif