shader.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.,                                       *
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 ***************************************************************************/

#ifndef __shader__header__
#define __shader__header__

#include "gpucalc/bindable.h"

#include "gpucalc/shader_system.h"

namespace gpucalc
{
 class _GpuCalcExport Shader: public Bindable
 {


  OBJ_DISABLE_COPY(Shader)
  
  
  
  public:
   Shader(const std::string & ShaderClassName, const std::string & ShaderName, ShaderSystem * System):
    Object(ShaderClassName, ShaderName), Bindable(ShaderClassName, ShaderName), mDefaultShaderSystem(System)
   {
   }


   virtual ~Shader()
   {
   }


   virtual void setSource(const std::string & ShaderSource) = 0;


   virtual std::string getSource() const = 0;


   virtual void addUniform(Uniform * uniform) = 0;


   virtual void removeUniform(Uniform * uniform) = 0;


   virtual void compile(const std::string & Parameters = std::string()) = 0;


   virtual void validate() = 0;


   virtual void preCompute() = 0;


   virtual bool isCompiled() const = 0;


   virtual bool isDebugEnabled() const = 0;


   bool isActive() const
   {
    return (this == mDefaultShaderSystem->getActiveShader());
   }


   void bind()
   {
    mDefaultShaderSystem->bind(this);
   }


   void unbind()
   {
    mDefaultShaderSystem->unbind(this);
   }


   virtual std::string getLanguageID() const = 0;


  private:
   ShaderSystem * mDefaultShaderSystem;
 };
}

#endif