Modern OpenGL Tutorial: Rendering a Colored Cube

Welcome to our Modern OpenGL tutorial! In this video, we'll take on the seemingly simple task of rendering a colored cube. But don't be fooled, there's a lot to cover before we can dive into coding this basic example.

We'll start by learning how to set up OpenGL buffers and efficiently transfer data to the GPU. Then, we'll explore the process of adding another vertex attribute for specifying color information.

But that's not all – understanding how OpenGL draws triangles, delving into the intricacies of depth, and mastering techniques like clearing the z-buffer and setting up face culling are all essential skills for any OpenGL programmer.

Join us on this journey as we break down the fundamentals of Modern OpenGL and create a colored cube from scratch. Whether you're a beginner or looking to brush up on your OpenGL skills, this tutorial is here to help you build a strong foundation. Don't forget to like, subscribe, and hit that notification bell to stay updated with our latest OpenGL tutorials!

[rbaleksandar]

Very nice tutorial. I was able to reproduce this with PyOpenGL and PyGame.

However, there is one thing that is somewhat misleading and that is the face coloring and how consistent it is. In order to achieve that you are duplicating each vertex to make each face has its own vertices. Vertices here are only shared if and only if they are part of the same face. That is why one side of the cube looks completely blue and another one - completely red.

In most cases this is not the case. Most 3D files (recommended to store your model in one once you get past basic shapes and want to introduce some content created using 3D modeling software) optimize the number of vertices so that a vertex is shared by many faces. In that case, e.g. you load an OBJ, you will get mixed colors across almost your entire model.

It would be nice to point that out in such a tutorial since this is something that newbies will encounter pretty fast.

[sukivirus]

Good Stuff. I guess you skipped on making a video on custom event handling.

[mostrealtutu]

Modern OpenGL? on a mac where you are stuck on OpenGL 4.1? : ( Not a good idea.