GLuint IBO;

Vertices[0] = Vector3f(-1.0f, -1.0f, 0.0f);
Vertices[1] = Vector3f(0.0f, -1.0f, 1.0f);
Vertices[2] = Vector3f(1.0f, -1.0f, 0.0f);
Vertices[3] = Vector3f(0.0f, 1.0f, 0.0f);


unsigned int Indices[] = { 0, 3, 1,
                           1, 3, 2,
                           2, 3, 0,
                           0, 1, 2 };
                           
                           
glGenBuffers(1, &IBO);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, IBO);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(Indices), Indices, GL_STATIC_DRAW);

glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, IBO);

glDrawElements(GL_TRIANGLES, 12, GL_UNSIGNED_INT, 0);