gl_glsl_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.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/

#ifndef __gl_glsl_shader__header__
#define __gl_glsl_shader__header__

#include "gpucalc/shader.h"

#include <GL/glew.h>

namespace gpucalc
{
 
 const char _GLGLSLShaderClassName [] = "GLGLSLShader";
 
 class _GpuCalcPrivate GLGLSLShader: public Shader
 {

  OBJ_DISABLE_COPY(GLGLSLShader)


  friend class GLGLSLShaderSystem;


  public:
   GLGLSLShader(const std::string & ShaderName, ShaderSystem * system);


   ~GLGLSLShader();


   void setSource(const std::string & ShaderSource);


   std::string getSource() const
   {
    return mShaderSource;
   }


   void addUniform(Uniform * uniform);


   void removeUniform(Uniform * uniform);


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


   bool isCompiled() const
   {
    return mIsCompiled;
   }


   void validate();


   void preCompute();


   bool isDebugEnabled() const
   {
    return mIsDebug;
   }


   std::string getLanguageID() const
   {
    return "glsl";
   }


  private:
   GLhandleARB mGLSLProgramID;


   GLhandleARB mGLSLFragmentShaderID;


   GLint mMultiTextureNumber;


   typedef std::list<Uniform *> UniformVector;
   UniformVector mUniformVector;


   bool mIsCompiled;


   bool mIsDebug;


   std::string mShaderSource;


   std::string mShaderCompilerParams;


   void compileStatus();


   void linkStatus();


   void ShaderInfoLog();


   void ProgramInfoLog();


   GLint getUniformLocation(const std::string & Name);


   void setUniformVariable(Uniform * uniform);


   void setUniformSampler(Uniform * uniform);
 };
}

#endif