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EBO.cpp
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EBO.cpp
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#include "EBO.hpp"
// Constructor that generates an
// Elements Buffer Object and links it to indices
EBO::EBO(GLuint* indices, GLsizeiptr size)
{
// Generate a reference ID for the EBO
glGenBuffers(1, &ID);
// Bind the EBO with the ID we created
// to the element array buffer OpenGL
// uses for EBOs
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ID);
// Put the indices data into the EBO buffer
glBufferData(GL_ELEMENT_ARRAY_BUFFER, size, indices, GL_STATIC_DRAW);
}
// Constructor that generates an
// Elements Buffer Object and does not link it to indices
EBO::EBO(GLsizeiptr size)
{
// Generate a reference ID for the EBO
glGenBuffers(1, &ID);
// Bind the EBO with the ID we created
// to the element array buffer OpenGL
// uses for EBOs
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ID);
// Put the indices data into the EBO buffer
glBufferData(GL_ELEMENT_ARRAY_BUFFER, size, nullptr, GL_STATIC_DRAW);
}
// Binds the EBO
void EBO::Bind()
{
// Bind the EBO again when needed
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ID);
}
// Unbinds the EBO
void EBO::Unbind()
{
// Unbind the EBO when needed
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
}
// Deletes the EBO
void EBO::Delete()
{
// Delete the EBO
glDeleteBuffers(1, &ID);
}
// Initialize the EBO from blank constructor
void EBO::InitEBO(GLuint* indices, GLsizeiptr size)
{
// Generate a reference ID for the EBO
glGenBuffers(1, &ID);
// Bind the EBO with the ID we created
// to the element array buffer OpenGL
// uses for EBOs
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ID);
// Put the indices data into the EBO buffer
glBufferData(GL_ELEMENT_ARRAY_BUFFER, size, indices, GL_STATIC_DRAW);
}