Great OpenGL tuts

[Brian Beuken]

Its a pity there are not more really good OpenGLES2.0/3.x tutorial sites around. Its something of a niche I guess, so maybe this will turn out to be a goto place in due course.

But OpenGLES2.0/3.x is in itself a subset of normal OpenGL, for which there are a lot of tutorial site around, and one of the very best for learning it is

https://learnopengl.com/Introduction

The early demo's are mostly pretty easy to translate into OpenGLES for SBC's, though your power levels will probably not allow some of the more advanced stuff to work, but for a general idea of how to get things up and running and improve your visualisation of how they work, this is a really great site.

If you have a PC,  just work through the examples as normal OpenGL tuts, after that its awesome practice, fun and no small amount of frustration to convert to OpenGLES2.0

I'll give a free online hug, to the 1st one who reports getting the PBR examples running at a decent frame rate.

Those of you who are a bit more advanced might also enjoy checking out my colleague at IGAD,  Jeremiah van Oosten's website at https://www.3dgep.com/

It's a little less well organised and focuses on some really high level stuff as well as the basics, but it is a great resource to keep bookmarked and dip into from time to time. He's updating it a little more often now that he's just finished his masters degree. Some of the stuff he does makes my head spin, but its a good indicator of the level of tech you will need if you want to get into graphics coding at a professional level.

[Brian Beuken]

Something else I stumbled upon today, when I was googling for some help with tessellation in CPU rather than GPU!

There was a site called GameTutorials.com which I used to use a lot when I was learning OpenGL wayyyy back when.
Sadly its gone, I don't know why, It was run by a chap called Ben Humphrey , aka DigiBen and I can't find any trace of him now, I hope he's ok.
I discovered all the tutorial code, which itself explained much of what it was doing was stored on github at
https://github.com/gametutorials/tutorials

Now its fair to say these are very old lessons, some even OpenGL 1.0 and the DirectX lessons will be hard to get working, but there's so much good content here that its well worth downloading and trying out a few things to see if it makes sense to you, I got most of the OpenGL tuts to run fine on my PC, but I can't be 100% certain you'll have as much luck, but feel free to try things out.