OgreCompositorChain.h

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/*
-----------------------------------------------------------------------------
This source file is part of OGRE
    (Object-oriented Graphics Rendering Engine)
For the latest info, see http://www.ogre3d.org/

Copyright (c) 2000-2005 The OGRE Team
Also see acknowledgements in Readme.html

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.

This program 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 GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place - Suite 330, Boston, MA 02111-1307, USA, or go to
http://www.gnu.org/copyleft/lesser.txt.
-----------------------------------------------------------------------------
*/
#ifndef __CompositorChain_H__
#define __CompositorChain_H__

#include "OgrePrerequisites.h"
#include "OgreRenderTargetListener.h"
#include "OgreRenderQueueListener.h"
#include "OgreCompositorInstance.h"
#include "OgreCompositor.h"
namespace Ogre {
    
    class _OgreExport CompositorChain: public RenderTargetListener
    {
    public:
        CompositorChain(Viewport *vp);
        virtual ~CompositorChain();
        
        typedef std::vector<CompositorInstance*> Instances;
        typedef VectorIterator<Instances> InstanceIterator;
        
        static const size_t LAST = (size_t)-1;
        static const size_t BEST = 0;
        
        CompositorInstance* addCompositor(CompositorPtr filter, size_t addPosition=LAST, size_t technique=BEST);
    
        void removeCompositor(size_t position=LAST);
        
        size_t getNumCompositors();
        
        void removeAllCompositors();
        
        CompositorInstance *getCompositor(size_t index);

        CompositorInstance* _getOriginalSceneCompositor(void) { return mOriginalScene; }
    
        InstanceIterator getCompositors();
    
        void setCompositorEnabled(size_t position, bool state);
    
        virtual void preRenderTargetUpdate(const RenderTargetEvent& evt);
        virtual void preViewportUpdate(const RenderTargetViewportEvent& evt);
        virtual void postViewportUpdate(const RenderTargetViewportEvent& evt);
        virtual void viewportRemoved(const RenderTargetViewportEvent& evt);
        
        void _markDirty();
        
        Viewport *getViewport();

        void _removeInstance(CompositorInstance *i);
    protected:    
        Viewport *mViewport;
        
        CompositorInstance *mOriginalScene;
        
        Instances mInstances;
        
        bool mDirty;
        bool mAnyCompositorsEnabled;

        CompositorInstance::CompiledState mCompiledState;
        CompositorInstance::TargetOperation mOutputOperation;
        
        void _compile();
        
        void preTargetOperation(CompositorInstance::TargetOperation &op, Viewport *vp, Camera *cam);
        
        void postTargetOperation(CompositorInstance::TargetOperation &op, Viewport *vp, Camera *cam);

        void destroyResources(void);

        class RQListener: public RenderQueueListener
        {
        public:
            virtual void renderQueueStarted(uint8 id, const String& invocation, bool& skipThisQueue);
            virtual void renderQueueEnded(uint8 id, const String& invocation, bool& repeatThisQueue);

            void setOperation(CompositorInstance::TargetOperation *op,SceneManager *sm,RenderSystem *rs);

            void flushUpTo(uint8 id);
        private:
            CompositorInstance::TargetOperation *mOperation;
            SceneManager *mSceneManager;
            RenderSystem *mRenderSystem;
            CompositorInstance::RenderSystemOpPairs::iterator currentOp, lastOp;
        };
        RQListener mOurListener;
        unsigned int mOldClearEveryFrameBuffers;
        uint32 mOldVisibilityMask;
        bool mOldFindVisibleObjects;
        float mOldLodBias;     
        String mOldMaterialScheme;
    };
}

#endif

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Copyright © 2000-2005 by The OGRE Team

This work is licensed under a Creative Commons Attribution-ShareAlike 2.5 License.
Last modified Sun Mar 12 14:37:39 2006