Rendering 1 Million Spheres with OpenGL and WASM: A Debugging Journey

The author tackled a hiring challenge: rendering one million spheres using OpenGL. The project was then ported to WASM and WebGL to improve performance and accessibility. The article details two crucial mistakes: incorrectly mapping texture coordinates resulting in flattened spheres, and reusing VAOs causing rendering anomalies. The author successfully rendered the spheres and shares lessons learned and resource links.