glslShaders.h

/* Copyright (c) 2007-2011,  Maxim Makhinya  <maxmah@gmail.com>
   Copyright (c) 2008-2010,  Stefan Eilemann <eile@equalizergraphics.com> 
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice, this
 *   list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 * - Neither the name of Eyescale Software GmbH nor the names of its
 *   contributors may be used to endorse or promote products derived from this
 *   software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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#ifndef EVOLVE_GLSL_SHADERS_H
#define EVOLVE_GLSL_SHADERS_H

#include <eq/eq.h>

namespace eVolve
{
    class GLSLShaders
    {
    public:
        GLSLShaders(): _program( 0 ), _shadersLoaded( false ), _glewContext( 0 )
            {}

        bool loadShaders( const std::string &vShader,
                          const std::string &fShader,
                          const GLEWContext* glewContext );

        void unloadShaders();

        GLhandleARB  getProgram() const { return _program; }
        const GLEWContext* glewGetContext() const { return _glewContext; }

    private:
        GLhandleARB     _program;       
        bool            _shadersLoaded; 
        const GLEWContext* _glewContext;   

        GLhandleARB _loadShader( const std::string &shader, GLenum shaderType );
        void _printLog( GLhandleARB shader, const std::string &type );

        bool _cleanupOnError( GLhandleARB vShader=0, GLhandleARB fShader=0 );
    };

}
#endif // EVOLVE_GLSL_SHADERS_H