ShaderLoader.hpp

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#pragma once

// Common
#include <string>
#include <map>
// Helpers
#include "GLHeader.hpp"

namespace Face3D
{   
    class ShaderLoader
    {
        public:
            static ShaderLoader& Instance();

            GLuint getProgram(const std::string& shaderClassName);

            GLuint loadShader(const std::string& shaderClassName, GLenum shaderType);
            void deleteShader(const GLuint shaderID);

            GLuint createProgram();
            void linkProgram(const GLuint programID);
            void attachShader(const GLuint programID, const GLuint shaderID);
            void checkProgram(const GLuint programID);

            void addToCache(const GLuint programID, const std::string &shaderProgramName);

        private:
            ShaderLoader(){}
            GLuint loadVertexAndFragmentShader(const std::string& shaderClassName);
            std::string readInShaderCode(const std::string& pathToShaderFile);

            void compileShader(GLuint shaderID, const std::string &shaderCode);
            void checkShader(GLuint shaderID, GLint result);
            
            std::map<std::string, GLuint> m_ShaderProgramMap;
    };
}