moFBO.h

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/*******************************************************************************

                                moFBO.h

  ****************************************************************************
  *                                                                          *
  *   This source is free software; you can redistribute it and/or modify    *
  *   it under the terms of the GNU General Public License as published by   *
  *   the Free Software Foundation; either version 2 of the License, or      *
  *  (at your option) any later version.                                    *
  *                                                                          *
  *   This code 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      *
  *   General Public License for more details.                               *
  *                                                                          *
  *   A copy of the GNU General Public License is available on the World     *
  *   Wide Web at <http://www.gnu.org/copyleft/gpl.html>. You can also       *
  *   obtain it by writing to the Free Software Foundation,                  *
  *   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.         *
  *                                                                          *
  ****************************************************************************

  Copyright(C) 2006 Fabricio Costa

  Authors:
  Fabricio Costa
  Andrés Colubri

*******************************************************************************/

#ifndef __MO_FBO_H__
#define __MO_FBO_H__

#include "moTypes.h"
#include "moAbstract.h"

#define MO_FRAMEBUFFER_FULL 0
#define MO_FRAMEBUFFER_INVALID_TEX 1
#define MO_MAX_FBO_STACK_SIZE 10

#ifdef OPENGLESV2
#define GL_MAX_COLOR_ATTACHMENTS_EXT 1
#endif

#define MO_MAX_COLOR_ATTACHMENTS_EXT GL_MAX_COLOR_ATTACHMENTS_EXT


class moGLManager;

class LIBMOLDEO_API moFBO : public moAbstract
{
    public:
        moFBO();
        virtual ~moFBO();

        virtual MOboolean Init(moGLManager* p_gl);
        virtual MOboolean Finish();

        MOboolean HasDepthBuffer() { return m_has_depth_buffer; }
        MOboolean HasStencilBuffer() { return m_has_stencil_buffer; }
        MOboolean AddDepthStencilBuffer();

        void Bind();
        void Unbind();

        void SetReadTexture(MOuint p_attach_point);
        void SetDrawTexture(MOuint p_attach_point);
        void SetReadTexture(MOuint p_glid, MOuint p_width, MOuint p_height, const moTexParam& p_param, MOuint p_attach_point = 0);
        void SetDrawTexture(MOuint p_glid, MOuint p_width, MOuint p_height, const moTexParam& p_param, MOuint p_attach_point = 0);

        MOint GetColorAttachPoint(MOuint p_attach_point);
        MOint GetTextureGLId(MOuint p_attach_point);
        MOint GetColorAttachPointIndex(MOuint p_glid);

        MOuint GetColorAttachPointsCount() { return m_num_color_attach_points; }

        MOuint AddTexture(MOuint p_width, MOuint p_height, const moTexParam& p_param, MOuint p_glid, MOuint &p_attach_point);

        MOuint AttachTexture(MOuint p_width, MOuint p_height, const moTexParam& p_param, MOuint p_glid, MOuint p_attach_point);
        void ClearAttachements();

        MOuint CheckStatus()  const ;

        MOboolean IsValidTexture(MOuint p_width, MOuint p_height, const moTexParam& p_param)  const ;

        MOuint GetGLId()  const  { return m_fbo; }
        MOuint GetTarget() const { return m_target; }
        MOuint GetInternalFormat()  const  { return m_internal_format; }
        MOuint GetWidth()  const  { return m_width; }
        MOuint GetHeight()  const  { return m_height; }
    private:
        moGLManager* m_gl;

        MOuint m_fbo;

        GLenum m_target;
        GLint m_internal_format;
        MOuint m_width;
        MOuint m_height;

        MOboolean m_has_depth_buffer;
        MOboolean m_has_stencil_buffer;
        MOuint m_DepthStencilTex;

        MOuint m_num_color_attach_points;
        MOuint m_tex_glid_array[MO_MAX_COLOR_ATTACHMENTS_EXT];
        MOuint m_attach_points_array[MO_MAX_COLOR_ATTACHMENTS_EXT];

        void InitAttachPointsArray();
};

moDeclareExportedDynamicArray( moFBO*, moFBOArray);

#include "moGLManager.h"

#endif