OpenGL Programming Guide: The Official Guide to Learning OpenGL, Version 4.3, Eighth Edition

Vertex Specification

Now that you have data in buffers, and you know how to write a basic vertex shader, it’s time to hook the data up to the shader. You’ve already read about vertex array objects, which contain information about where data is located and how it is laid out, and functions like glVertexAttribPointer(). It’s time to take a deeper dive into vertex specifications, other variants of glVertexAttribPointer(), and how to specify data for vertex attributes that aren’t floating point or aren’t enabled.