OgreGLES2FrameBufferObject.h

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/*
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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) 2000-2013 Torus Knot Software Ltd

Permission is hereby granted, free of charge, to any person obtaining a copy
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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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*/
#ifndef __OgreGLES2FBO_H__
#define __OgreGLES2FBO_H__

#include "OgreGLES2RenderTexture.h"
#include "OgreGLES2Context.h"
#include "OgreGLES2ManagedResource.h"

namespace Ogre {
    
    class GLES2FBOManager;
    struct GLES2SurfaceDesc;

    class _OgreGLES2Export GLES2FrameBufferObject 
    {
    public:
        GLES2FrameBufferObject(GLES2FBOManager *manager, uint fsaa);
        ~GLES2FrameBufferObject();

        void bindSurface(size_t attachment, const GLES2SurfaceDesc &target);
        void unbindSurface(size_t attachment);
        
        void bind();

        void swapBuffers();

        void attachDepthBuffer( DepthBuffer *depthBuffer );
        void detachDepthBuffer();

        uint32 getWidth();
        uint32 getHeight();
        PixelFormat getFormat();
        GLsizei getFSAA();
        
        GLES2FBOManager *getManager() { return mManager; }
        const GLES2SurfaceDesc &getSurface(size_t attachment) { return mColour[attachment]; }
        
#if OGRE_PLATFORM == OGRE_PLATFORM_ANDROID

        void notifyOnContextLost();
        
        void notifyOnContextReset(const GLES2SurfaceDesc &target);
#endif
        
    private:
        GLES2FBOManager *mManager;
        GLsizei mNumSamples;
        GLuint mFB;
        GLuint mMultisampleFB;
        GLES2SurfaceDesc mMultisampleColourBuffer;
        GLES2SurfaceDesc mDepth;
        GLES2SurfaceDesc mStencil;
        // Arbitrary number of texture surfaces
        GLES2SurfaceDesc mColour[OGRE_MAX_MULTIPLE_RENDER_TARGETS];


        void initialise();
    };

}

#endif