A 350-Line GLSL Shader Playground in the Browser — WebGL Init, Line-Number-Aware Errors, and URL-Hash Sharing
SEN LLC
Sometimes you want to try a shader without spinning up Shadertoy, without a build step, without anything. Just a textarea, a canvas, and a refresh-while-you-type loop. This is that page: ~350 lines of vanilla JS, a fixed full-screen-quad vertex shader, and a fragment shader you edit live. Compile errors land back in the UI with line numbers; the URL hash round-trips your source so links shared on Twitter just work. 🌐 Demo : https://sen.ltd/portfolio/shader-playground/ 📦 GitHub : https://github.c