C:/Documents and Settings/benesova/Plocha/FlowVis/vislab2/shaderLoader.h

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#ifndef __SHADER_LOADER__
#define __SHADER_LOADER__

#include <Cg/cg.h>
#include <Cg/cgGL.h>

#include <string>
#include <map>

#include "tinyXML/tinyxml.h"
#include "logger.h"

using namespace std;

class ShaderProgram
{
public:
        string name;                                                            
        CGprogram program;                                                      
        map<string, string> parameterTypeMap;           
        map<string, CGparameter> parameterMap;          

        void setTextureParameter(string name, unsigned int value);
        void setParameter3f(string name, double valueOne, double valueTwo, double valueThree);
        void setParameter2f(string name, double valueOne, double valueTwo);
        void setParameter1f(string name, double valueOne);

        void enableTextureParameters();
        void disableTextureParameters();

        void activate();
};

class ShaderLoader
{
public: 
        static ShaderLoader *getShaderLoader();
        
        ShaderProgram *getProgram(string name);

        void disableShaders();
        void enableFragmentShaders();
        void enableVertexShaders();

        void setActive(ShaderProgram *shaderProgram);

        bool isActive(ShaderProgram *shaderProgram) {return active == shaderProgram;}

        void checkForCgError(const char *situation);

        /*
        enum ShaderType {
                VertexProgram,
                FragmentProgram
        };
        */

private:
        static ShaderLoader *singleton;                         

        CGcontext cgContext;                                            
        CGprofile cgFragmentProfile;                            
        CGprofile cgVertexProfile;

        ShaderProgram *active;                                          

        map<string, ShaderProgram *> programMap;        

        void loadParameter(ShaderProgram *currentProgram, TiXmlElement* parameterElement);
        ShaderProgram *loadShader(TiXmlElement* shaderElement);

        
        void initShaderPrograms(string configFile);

        //bool shaderLoaderReady;

        map<string, ShaderProgram *> shaderStorage;
        
        void initCG();


        ShaderLoader();
        ~ShaderLoader();

};



#endif

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