Ever lost track of time staring at lines of code? A developer has made that invisible habit impossible to ignore. Meet the black hole that lives inside your terminal. It expands. It distorts. It swallows your workspace. And it only stops when you take a break.
Developer @s13k_ released a custom GLSL shader for the Ghostty terminal emulator on June 10, 2026. It has since gone viral across developer communities on X and Reddit.
Here is how it works
The shader places a dynamic black hole directly inside your terminal window. It comes with a glowing photon ring and gravitational lensing effects. As you keep working without a pause, it slowly grows. Text around it begins to warp and distort.
Take a five-minute break. It shrinks away quietly. Ignore it past the 55-minute mark. It becomes impossible to work around.
One thoughtful detail: the bottom of the terminal where your command prompt lives is never distorted. The tool stays functional, no matter how dramatic things get.
Also Read | Why ChatGPT Often Picks 73 When Asked for a Random Number?
Why does GLSL Shader Matter?
Most break reminders are pushy. Pop-up timers interrupt your flow. Productivity trackers feel invasive. This shader does none of that. It sits silently inside your existing workspace. It nudges. It does not demand.
This design echoes the popular Pomodoro Technique, which recommends structured rest intervals to protect cognitive performance and reduce errors over long sessions.
Health experts also back the 20-20-20 rule for heavy screen users. Every 20 minutes, look at something 20 feet away for 20 seconds. It reduces digital eye strain and prevents repetitive stress injuries.
Health experts also recommend the 20-20-20 rule for those logging long screen hours:
Every 20 minutes, look at something 20 feet away for 20 seconds to reduce digital eye strain.
Also Read | Kottayam Becomes India's First Digital Banking District: Know How It Was Done
The shader is available on GitHub under s0xDk/ghostty-blackhole. It requires Ghostty version 1.3 or later.
In a world where software is built to keep you glued to screens, it is rare to find a tool designed around one quiet idea: knowing when to stop.and prevent repetitive stress injuries.
The response has been remarkable. A demo video shared on X accumulated hundreds of thousands of views within hours.
