Learn OpenGL (https://learnopengl.com/) examples in Odin

This repo contains code for the examples from the Learn OpenGl site but written in Odin. At the end of each chapter on the site, there is a link to C++ source code. This project replicates that but again, using Odin.

What you need before you start

• You will need to install Odin. The Getting Started guide has different options you can follow.
• If you have Odin already, I suggest that you update it. I will be using the most recent build of odin as of the time I uploaded this repo onto github.
• You will need a text editor or IDE. This project was a put together in VS Code (and on Win11)
• That's it. Odin ships with the libraries needed to follow along with the tutorials on learnopengl. Plus the additional assets required are contained in the project.

Changes compared the C++ versions

For starters, Odin is not an object-oriented language while C++ is. In the original C++ versions, OOP is used in certain chapters. In this project there are places where I will use functions to minimize code repetition and to make the code a lot more readable.

Also, this is not going to be a "direct translation" from C++ to Odin. There are concepts in Odin that are just different or let me say, interpreted differently. Because of that, I shall try my best using comments, to explain what exactly the Odin code is doing in contrast to it's C++ counterpart.

How to run the projects

This is not one large Odin project, instead it is a collection of smaller Odin projects grouped by chapters. To run each project, you will need to enter each folder and run the project from there. Simply run odin run . and you will be good to go.

cd 1-4-a-hello-triangle/
odin run .

If you get stuck or need help

• Bugs in my code could cause you to get stuck. If you catch a bug, please submit an issue
• I highly recommend visiting Learn OpenGL to get in-depth explanations (outside of code) of how things work.
• If you need assistance with Odin and OpenGL, I highly recommend joining two Discord servers
  • Odin Programming Language
  • Karl's Community
• If you are new to Odin and are interested in learning it, I recommend checking the Odin website. You can also follow Ginger Bill (Creator of Odin) on Youtube. You can also checkout Karl's Youtube Channel and I recommend buying his book Odin Book.
• It goes without saying but using web search engines helps
• In case you use ChatGPT or equivalent, just keep in mind that unlike search engine results, these programs tend to return just 1 solution or result that they deem most accurate/relevant. As opposed to a list of different results that you could compare and analyze yourself. That 1 result may not always be correct (I speak from experience 😭)

TODO

• Chapter 1 - Getting Started
• Chapter 2 - Lighting
• Chapter 3 - Model Loading
• Chapter 4 - Advanced OpenGL
• Chapter 5 - Advanced Lighting
• Chapter 6 - PBR
• Chapter 7 - Debugging
• Chapter 8 - Text Rendering
• Chapter 9 - 2D Game