gl_glsl_uniform.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.                                   *
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 *   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.                          *
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 *   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.,                                       *
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 ***************************************************************************/

#ifndef __gl_glsl_uniform__header__
#define __gl_glsl_uniform__header__

#include "gpucalc/application.h"
#include "gpucalc/log_manager.h"
#include "gpucalc/uniform.h"
#include "gpucalc/shader.h"

#include <GL/glew.h>

namespace gpucalc
{

 
 const char _GLGLSLUniformClassName [] = "GLGLSLUniform";
 

 class GLGLSLUniform: public Uniform
 {

  OBJ_DISABLE_COPY(GLGLSLUniform)


  friend class GLGLSLShaderSystem;


  public:
   GLGLSLUniform(const std::string & UniformName):
    Object(_GLGLSLUniformClassName, UniformName), Uniform(_GLGLSLUniformClassName, UniformName), mIsUploadedToGPU(false),
    mUniformType(UT_NOT_UNIFORM), mPointer(0), mSampler(0)
   {
   }


   void uploadToGPU()
   {
    mIsUploadedToGPU = true;
   }


   bool isUploadedToGPU() const
   {
    return mIsUploadedToGPU;
   }


   void initialize()
   {
    // does nothing
   }


   bool isInitialized() const
   {
    return true;
   }


   Uniform::UniformType getUniformType() const
   {
    return mUniformType;
   }


   Texture * getSampler() const
   {
    assert(mSampler && "GLGLSLUniform:\t returning uninitialized Sampler!!!");
    return mSampler;
   }


   void * pointer() const
   {
    assert(mPointer && "GLGLSLUniform:\t returning uninitialized pointer!!!");
    return mPointer;
   }


  private:
   bool mIsUploadedToGPU;


   Uniform::UniformType mUniformType;


   mutable void * mPointer;


   mutable Texture * mSampler;
 };
}

#endif