gl_texture.h

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/***************************************************************************
 *   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.             *
 ***************************************************************************/
 
 #include "gpucalc/texture.h"

#include "gpucalc/log_manager.h"
#include "gpucalc/string_util.h"

#include <GL/glew.h>

namespace gpucalc
{

 const char _GLTextureClassName [] = "GLTexture";


 class _GpuCalcPrivate GLTexture: public Texture
 {

  OBJ_DISABLE_COPY(GLTexture)

  friend class GLGraphicCore;

  public:
   ~GLTexture();


   bool isRenderTexture() const
   {
    return (mUsage == TU_Render);
   }


   void uploadToGPU();


   bool isUploadedToGPU() const
   {
    return mIsUploadedToGPU;
   }


   GLuint getGLTextureID() const
   {
    return mGLTextureID;
   }


   GLenum getGLTextureTarget() const
   {
    return mGLTextureTarget;
   }


   GLenum getGLTextureFormat() const
   {
    return mGLTextureFormat;
   }


   GLenum getGLTextureType() const
   {
    return mGLTextureType;
   }


   void initialize();


   bool isInitialized() const
   {
    return true;
   }



  private:

   TextureUsage mUsage;


   bool mIsUploadedToGPU;


   // GL specific members
   GLenum mGLTextureFormat;


   GLenum mGLTextureTarget;


   GLenum mGLTextureType;


   GLint mGLTextureInternalFormat;


   GLuint mGLTextureID;


   void * mGLPointer;


   GraphicCore * mDefaultGraphicCore;



   void setNVData();


   void setATIData();


   GLTexture(const std::string & TextureName, TextureUsage Usage, GraphicCore * Core):
    Object(_GLTextureClassName, TextureName), Texture(_GLTextureClassName, TextureName, Usage, Core),
    mUsage(Usage), mIsUploadedToGPU(false), mGLTextureFormat(0), mGLTextureTarget(0), mGLTextureType(0),
    mGLTextureInternalFormat(0), mGLTextureID(0), mGLPointer(0), mDefaultGraphicCore(Core)
   {
    glGenTextures(1, &mGLTextureID);
    addSpecificParameter("GLTextureID", &mGLTextureID, sizeof(mGLTextureID));
    LogManager::getSingleton().logMessage(dynamic_cast<Bindable *>(this),
     "Generated new OpenGL texture ID: " + auxillary::StringUtil::toString(mGLTextureID), LML_Normal);
   }

 };
}