#pragma once

#include <GL/glew.h>

#include "ShaderUtil.h"

class Shader {
private:
	const char* _vert;
	const char* _frag;

	GLuint _id;

public:
	Shader(const char* vert, const char* frag) : _vert(vert), _frag(frag), _id(0) {
	
	}

	~Shader() {
		if (_id != 0) {
			glDeleteProgram(_id);
		}
	}

	GLuint Reference() const { return _id; }

	void Initialize() {
		if (_id != 0)
			return;

		_id = ShaderUtil::CreateShaderProgram(_vert, _frag);
	}

	void Use() {
		Initialize();

		glUseProgram(_id);
	}

	void Disable() {
		Initialize();
		
		glUseProgram(0);
	}
};