moFBManager.h

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

                                moFBManager.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.                                    *
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  *   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_FBMANAGER_H__
#define __MO_FBMANAGER_H__

#include "moTypes.h"
#include "moText.h"
#include "moLock.h"
#include "moFBO.h"
#include "moTexture.h"
#include "moResourceManager.h"

class LIBMOLDEO_API moFBManager : public moResource
{
    public:
        moFBManager();
        virtual ~moFBManager();

        virtual MOboolean Init();
        virtual MOboolean Finish();

        MOuint CreateFBO();
        MOboolean DeleteFBO(MOuint p_fbo);
        MOuint GetFBOCount() { return m_fbo_array.Count(); }
        moFBO* GetFBO(MOuint p_fbo) { return m_fbo_array.Get(p_fbo); }

        MOint GetFBO(MOuint p_target, MOuint p_internal_format, MOuint p_width, MOuint p_height);

        void BindScreenFB();
        void UnbindScreenFB();

        MOboolean BindFBO(MOuint p_fbo);
        MOboolean BindFBO(MOuint p_fbo, MOuint p_attach_point);
        MOboolean BindFBO(MOuint p_fbo, MOuint p_num_attach_points, MOuint *p_attach_point_list);

        MOboolean AddTexture(MOuint p_fbo, moTexture* p_pTex, MOuint &p_attach_point);
        MOboolean AttachTexture(MOuint p_fbo, moTexture* p_pTex, MOuint p_attach_point);

        void SetDrawTexture(MOuint p_attach_point);
        void SetDrawTextures(MOuint p_num_attach_points, MOuint *p_attach_point_list);
        void SetReadTexture(MOuint p_attach_point);

        void SetDrawTextureByGLId(MOuint p_glid, MOuint p_width, MOuint p_height, const moTexParam& p_param, MOuint p_def_attach_point = 0);
        void SetDrawTexturesByGLId(MOuint p_num_glids, MOuint *p_glid_list, MOuint p_width, MOuint p_height, const moTexParam& p_param);
        void SetReadTextureByGLId(MOuint p_glid, MOuint p_width, MOuint p_height, const moTexParam& p_param, MOuint p_def_attach_point = 0);

        MOint SetDrawTexture(moTexture* p_pTex, MOuint p_def_attach_point = 0);
        MOint SetDrawTextures(moTextureArray &p_tex_array);
        MOint SetReadTexture(moTexture* p_pTex, MOuint p_def_attach_point = 0);

        void UnbindFBO();
        void UnbindAllFBO();
    private:
        moGLManager* m_glmanager;

        moFBOArray m_fbo_array;

        // Index of the currently selected fbo, -1 if the screen framebuffer is binded.
        MOint m_current_fbo;

        MOint m_fbo_stack_index;
        MOuint m_fbo_stack[MO_MAX_FBO_STACK_SIZE];
        MOuint m_draw_buffer_stack[MO_MAX_FBO_STACK_SIZE];
        MOuint m_read_buffer_stack[MO_MAX_FBO_STACK_SIZE];

        GLint m_screen_read_buffer;
        GLint m_screen_draw_buffer;

        GLenum m_color_buffers[MO_MAX_COLOR_ATTACHMENTS_EXT];

        void GetScreenBuffers();
};

#include "moGLManager.h"

#endif