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