OpenGL ES 2.0 Blue Triangle Example

This is a simple C program that uses SDL2 and OpenGL ES 2.0 to create a window and render a blue triangle. It serves as a basic introduction to setting up an OpenGL ES 2.0 rendering context on Linux using SDL2.

Requirements

SDL2 library (libsdl2-dev)
OpenGL ES 2.0 library (libgles2-mesa-dev)
GCC or any C compiler that supports the above libraries

Installation on Linux (Debian / Ubuntu)

Install the necessary libraries:

sudo apt update
sudo apt install libsdl2-dev libgles2-mesa-dev gcc make

How to Build

Clone this repository:

git clone https://github.com/kion-dgl/SDL-C-Triangle.git
cd SDL-C-Triangle

Build the project using the provided Makefile:

make

Run the executable:

./triangle

Compile for Web

Requires emcc

make web
python3 -m http.server 8080 --directory ./docs

Project Structure

.
├── docs/           # The compiled webasm
├── main.c          # The main C program
├── Makefile        # Makefile to build the project
├── .gitignore      # Files to be ignored by Git
├── preview.png     # Preview of the example output
└── README.md       # This README file

License

MIT License