CFrameBuffer.h

Go to the documentation of this file.

//==============================================================================
/*
    Software License Agreement (BSD License)
    Copyright (c) 2003-2016, CHAI3D.
    (www.chai3d.org)

    All rights reserved.

    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions
    are met:

    * Redistributions of source code must retain the above copyright
    notice, this list of conditions and the following disclaimer.

    * Redistributions in binary form must reproduce the above
    copyright notice, this list of conditions and the following
    disclaimer in the documentation and/or other materials provided
    with the distribution.

    * Neither the name of CHAI3D nor the names of its contributors may
    be used to endorse or promote products derived from this software
    without specific prior written permission.

    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
    FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
    COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
    INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
    BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
    LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
    CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
    LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
    ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
    POSSIBILITY OF SUCH DAMAGE. 

    \author    <http://www.chai3d.org>
    \author    Francois Conti
    \version   3.2.0 $Rev: 2159 $
*/
//==============================================================================

//------------------------------------------------------------------------------
#ifndef CFrameBufferH
#define CFrameBufferH
//------------------------------------------------------------------------------
#include "graphics/CImage.h"
#include "graphics/CColor.h"
#include "materials/CTexture2d.h"
#include "world/CWorld.h"
//------------------------------------------------------------------------------
#include <string>
#include <stdio.h>
//------------------------------------------------------------------------------

//------------------------------------------------------------------------------
namespace chai3d {
//------------------------------------------------------------------------------

//==============================================================================
//==============================================================================

//------------------------------------------------------------------------------
class cFrameBuffer;
typedef std::shared_ptr<cFrameBuffer> cFrameBufferPtr;
//------------------------------------------------------------------------------

//==============================================================================
//==============================================================================
class cFrameBuffer
{
    //--------------------------------------------------------------------------
    // CONSTRUCTOR & DESTRUCTOR:
    //--------------------------------------------------------------------------

public:

    cFrameBuffer();

    virtual ~cFrameBuffer();

    static cFrameBufferPtr create() { return (std::make_shared<cFrameBuffer>()); }


    //--------------------------------------------------------------------------
    // PUBLIC METHODS
    //--------------------------------------------------------------------------

public:

    void setup(cCamera* a_camera = NULL,
               const unsigned int a_width = 0,
               const unsigned int a_height = 0,
               const bool a_enableImageBuffer = true,
               const bool a_enableDepthBuffer = true);

    void renderView(const cEyeMode a_eyeMode = C_STEREO_LEFT_EYE);

    void copyImageBuffer(cImagePtr a_image);

    void copyDepthBuffer(cImagePtr a_image);


    //--------------------------------------------------------------------------
    // PUBLIC METHODS - CAMERA
    //--------------------------------------------------------------------------

public:

    void setCamera(cCamera* a_camera) { m_camera = a_camera; }

    cCamera* getCamera() { return (m_camera); }


    //--------------------------------------------------------------------------
    // PUBLIC METHODS - RESOLUTION
    //--------------------------------------------------------------------------

public:


    inline unsigned int getWidth() const { return (m_width); }

    inline unsigned int getHeight() const { return (m_height); }

    void setSize(const unsigned int a_width, const unsigned int a_height);


    //--------------------------------------------------------------------------
    // PUBLIC METHODS - EXPERTS ONLY
    //--------------------------------------------------------------------------

public:

    bool renderInitialize();

    bool renderFinalize();


    //--------------------------------------------------------------------------
    // PUBLIC MEMBERS - BUFFERS
    //--------------------------------------------------------------------------

public:

    cTexture2dPtr m_imageBuffer;

    cTexture2dPtr m_depthBuffer;


    //--------------------------------------------------------------------------
    // PROTECTED MEMBERS:
    //--------------------------------------------------------------------------

protected:

    bool m_useImageBuffer;

    bool m_useDepthBuffer;

    unsigned int m_width;

    unsigned int m_height;

    unsigned int m_prevWidth;

    unsigned int m_prevHeight;

    cCamera* m_camera;

    GLuint m_fbo;
};

//------------------------------------------------------------------------------
} // namespace chai3d
//------------------------------------------------------------------------------

//------------------------------------------------------------------------------
#endif
//------------------------------------------------------------------------------