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/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
*
* This library is open source and may be redistributed and/or modified under
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
* (at your option) any later version. The full license is in LICENSE file
* included with this distribution, and on the openscenegraph.org website.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* OpenSceneGraph Public License for more details.
*/
#ifndef OSGVIEWER_RENDERER
#define OSGVIEWER_RENDERER 1
#include <OpenThreads/Condition>
#include <osg/Timer>
#include <osgDB/DatabasePager>
#include <osgUtil/SceneView>
#include <osgViewer/Export>
namespace osgViewer {
class OSGVIEWER_EXPORT OpenGLQuerySupport : public osg::Referenced
{
public:
OpenGLQuerySupport();
virtual void checkQuery(osg::Stats* stats, osg::State* state,
osg::Timer_t startTick) = 0;
virtual void beginQuery(unsigned int frameNumber, osg::State* state) = 0;
virtual void endQuery(osg::State* state) = 0;
virtual void initialize(osg::State* state, osg::Timer_t startTick);
protected:
const osg::GLExtensions* _extensions;
};
class OSGVIEWER_EXPORT Renderer : public osg::GraphicsOperation
{
public:
Renderer(osg::Camera* camera);
osgUtil::SceneView* getSceneView(unsigned int i) { return _sceneView[i].get(); }
const osgUtil::SceneView* getSceneView(unsigned int i) const { return _sceneView[i].get(); }
void setDone(bool done) { _done = done; }
bool getDone() { return _done; }
void setGraphicsThreadDoesCull(bool flag);
bool getGraphicsThreadDoesCull() const { return _graphicsThreadDoesCull; }
virtual void cull();
virtual void draw();
virtual void cull_draw();
virtual void compile();
virtual void resizeGLObjectBuffers(unsigned int maxSize);
virtual void releaseGLObjects(osg::State* = 0) const;
void setCompileOnNextDraw(bool flag) { _compileOnNextDraw = flag; }
bool getCompileOnNextDraw() const { return _compileOnNextDraw; }
virtual void operator () (osg::Object* object);
virtual void operator () (osg::GraphicsContext* context);
virtual void release();
virtual void reset();
/** Force update of state associated with cameras. */
void setCameraRequiresSetUp(bool flag);
bool getCameraRequiresSetUp() const;
protected:
void initialize(osg::State* state);
virtual ~Renderer();
virtual void updateSceneView(osgUtil::SceneView* sceneView);
osg::observer_ptr<osg::Camera> _camera;
bool _done;
bool _graphicsThreadDoesCull;
bool _compileOnNextDraw;
bool _serializeDraw;
osg::ref_ptr<osgUtil::SceneView> _sceneView[2];
struct OSGVIEWER_EXPORT ThreadSafeQueue
{
OpenThreads::Mutex _mutex;
OpenThreads::Condition _cond;
typedef std::list<osgUtil::SceneView*> SceneViewList;
SceneViewList _queue;
bool _isReleased;
ThreadSafeQueue();
~ThreadSafeQueue();
/** Release any thread waiting on the queue, even if the queue is empty. */
void release();
/** Reset to fefault state (_isReleased = false)*/
void reset();
/** Take a SceneView from the queue. Can return 0 if release() is called when the queue is empty. */
osgUtil::SceneView* takeFront();
/** Add a SceneView object to the back of the queue. */
void add(osgUtil::SceneView* sv);
};
ThreadSafeQueue _availableQueue;
ThreadSafeQueue _drawQueue;
bool _initialized;
osg::ref_ptr<OpenGLQuerySupport> _querySupport;
osg::Timer_t _startTick;
};
}
#endif
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