This HTML page creates an interactive audio-reactive shader using p5.js. Here's a brief overview of its functionality:
It sets up a WebGL canvas that fills the entire window.
It defines vertex and fragment shaders for rendering a complex, animated visual effect.
It allows users to upload an audio file through an input element.
When an audio file is loaded, it analyzes the audio in real-time using the Web Audio API.
The shader uniforms are updated based on the audio analysis, creating a visual representation that reacts to the music.
The visual effect is a 3D-like animation that responds to low, mid, and high frequencies in the audio.
To use this, you would need to host it on a web server and open it in a web browser that supports WebGL and the Web Audio API. Then, you can upload an audio file to see the visual effects react to the music.