gl_framebuffer.h

Go to the documentation of this file.

/***************************************************************************
 *   Copyright (C) 2008 by Kutumov Alexey                                  *
 *   ru.pixel@gmail.com                                                    *
 *                                                                         *
 *   This program 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 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 General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU 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.             *
 ***************************************************************************/

#ifndef __gl_framebuffer__header__
#define __gl_framebuffer__header__

#include "gpucalc/framebuffer.h"
#include <GL/glew.h>

#include "gpucalc/log_manager.h"

namespace gpucalc
{
 class GLTexture;
 class GLGraphicCore;
 
 
 const char _GLFrameBufferClassName [] = "GLFrameBuffer";
 
 
 class _GpuCalcPrivate GLFrameBuffer: public FrameBuffer
 {

  OBJ_DISABLE_COPY(GLFrameBuffer)


  friend class GLGraphicCore;


  public:
   ~GLFrameBuffer()
   {
    glDeleteFramebuffersEXT(1, &mGLFrameBufferID);
    LogManager::getSingleton().logMessage(this, "FrameBuffer ID deleted for OpenGL memory.", LML_Normal);
   }
 

   void initialize();


   void attach(const Texture * texture);


   void detach(const Texture * texture);


   void drawBuffer(const Texture * RenderTarget);


   void getData(Data & data, const Texture * from);


   void checkErrors(const std::string & where);


  private:
   GLuint mGLFrameBufferID;


   GLint mGLFrameBufferWidth;


   GLint mGLFrameBufferHeight;


   GLenum mGLFrameBufferFormat;


   GLenum mGLFrameBufferType;


   GLint mMaxNumberOfAttachment;


   typedef std::vector<const Texture *> AttachmentList;


   AttachmentList mAttachmentList;


   GLFrameBuffer(const std::string & FrameBufferName, GLint MaxNumberOfAttachments, GraphicCore * DefaultGLGraphicCore):
    Object(_GLFrameBufferClassName, FrameBufferName), FrameBuffer(_GLFrameBufferClassName, FrameBufferName, DefaultGLGraphicCore),
    mGLFrameBufferID(0), mGLFrameBufferWidth(0), mGLFrameBufferHeight(0), mGLFrameBufferFormat(0), mGLFrameBufferType(0),
    mMaxNumberOfAttachment(MaxNumberOfAttachments), mAttachmentList(MaxNumberOfAttachments)
   {
   }


   GLint getFirstFreeAttachment() const;


   GLint getIndexByTexture(const Texture * texture) const;


   GLint getIndexByTextureName(const std::string & TextureName) const;
 };
}

#endif