ShaderProgram.h

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#pragma once
#include <string>
#include <unordered_map>
#include <GL/glew.h>
#include <glm/mat4x4.hpp>
 
namespace eng
{
    class Texture;
 
    class ShaderProgram
    {
    public:
        ShaderProgram() = delete;
        ShaderProgram(const ShaderProgram&) = delete;
        ShaderProgram& operator=(const ShaderProgram&) = delete;
        explicit ShaderProgram(GLuint shaderProgramID);
        ~ShaderProgram();
 
        void Bind();
        GLint GetUniformLocation(const std::string& name);
        void SetUniform(const std::string& name, float value);
        void SetUniform(const std::string& name, float v0, float v1);
        void SetUniform(const std::string& name, const glm::mat4& mat);
        void SetUniform(const std::string& name, const glm::vec3& value);
        void SetUniform(const std::string& name, const glm::vec4& value);
        void SetTexture(const std::string& name, Texture* texture);
 
    private:
        std::unordered_map<std::string, GLint> m_uniformLocationCache;
        GLuint m_shaderProgramID = 0;
        int m_currentTextureUnit = 0;
    };
}