[OpenGL] VBO / VAO

1. VBO.h

#ifndef VBO_CLASS_H
#define VBO_CLASS_H

#include<glad/glad.h>

class VBO
{
public:
	// Reference ID of the Vertex Buffer Object
	GLuint ID;
	// Constructor that generates a Vertex Buffer Object and links it to vertices
	VBO(GLfloat* vertices, GLsizeiptr size);

	// Binds the VBO
	void Bind();
	// Unbinds the VBO
	void Unbind();
	// Deletes the VBO
	void Delete();
};

#endif

2. VBO.cpp

#include"VBO.h"

// Constructor that generates a Vertex Buffer Object and links it to vertices
VBO::VBO(GLfloat* vertices, GLsizeiptr size)
{
	glGenBuffers(1, &ID);
	glBindBuffer(GL_ARRAY_BUFFER, ID);
	glBufferData(GL_ARRAY_BUFFER, size, vertices, GL_STATIC_DRAW);
}

// Binds the VBO
void VBO::Bind()
{
	glBindBuffer(GL_ARRAY_BUFFER, ID);
}

// Unbinds the VBO
void VBO::Unbind()
{
	glBindBuffer(GL_ARRAY_BUFFER, 0);
}

// Deletes the VBO
void VBO::Delete()
{
	glDeleteBuffers(1, &ID);
}

3. VAO.h

#ifndef VAO_CLASS_H
#define VAO_CLASS_H

#include<glad/glad.h>
#include"VBO.h"

class VAO
{
public:
	// ID reference for the Vertex Array Object
	GLuint ID;
	// Constructor that generates a VAO ID
	VAO();

	// Links a VBO to the VAO using a certain layout
	void LinkVBO(VBO& VBO, GLuint layout);
	// Binds the VAO
	void Bind();
	// Unbinds the VAO
	void Unbind();
	// Deletes the VAO
	void Delete();
};
#endif

4. VAO.cpp

#include"VAO.h"

// Constructor that generates a VAO ID
VAO::VAO()
{
	glGenVertexArrays(1, &ID);
}

// Links a VBO to the VAO using a certain layout
void VAO::LinkVBO(VBO& VBO, GLuint layout)
{
	VBO.Bind();
	glVertexAttribPointer(layout, 3, GL_FLOAT, GL_FALSE, 0, (void*)0);
	glEnableVertexAttribArray(layout);
	VBO.Unbind();
}

// Binds the VAO
void VAO::Bind()
{
	glBindVertexArray(ID);
}

// Unbinds the VAO
void VAO::Unbind()
{
	glBindVertexArray(0);
}

// Deletes the VAO
void VAO::Delete()
{
	glDeleteVertexArrays(1, &ID);
}