Your secondary monitor
doesn't have to go dark.
DemShade fills the empty screens around your game with ambient light, generated live on your GPU. It turns on when you go fullscreen. It turns off when you don't.
Right now you're stuck with two bad options.
When you go fullscreen on your main monitor, what happens to the rest of your screens depends on your setup — and neither of today's default behaviors is comfortable for long sessions.
Blank screen
Solid black next to a bright game. The contrast tires your eyes out over long sessions.
Static desktop
Icons, windows, notifications — all sitting in the corner of your eye, pulling focus from the game.
Ambient light
Smooth, subtle animation, generated on your GPU. Your eyes rest, your focus stays on the game.
Three steps. Zero clicks.
DemShade runs in your tray and reacts on its own to what's happening on your main monitor.
Watches for fullscreen
The moment a game goes exclusive or borderless fullscreen on your main monitor, DemShade detects it automatically — no setup required.
Switches your monitors
Secondary screens instantly switch to the shader from your active profile — or to a classic mode: static color, image, or solid black.
Hands control back
Quit the game or minimize it, and your monitors return to normal instantly. Nothing to close manually.
Everything you need, without a complicated interface.
Automatic detection
Turns on and off based on what you're playing — no keybinds or rules to configure.
49 built-in effects
Raymarched volumetric shaders, kaleidoscopic fractals and classic modes, all rendered live on your GPU.
Audio-reactive
Effects pulse in time with your system sound. 100% local processing — nothing recorded, nothing sent anywhere.
Per-monitor control
Each screen gets its own mode and its own opacity, independent of the others.
Saved profiles
Switch instantly between full setups — "Streaming," "Relaxing," "Competitive."
Scheduling
Profiles that activate automatically by time of day, or when a specific game or app launches.
Global hotkeys
Toggle and adjust on the fly without ever opening the app window.
Custom shaders
Import your own .glsl or .frag files and run them directly in DemShade.
System stats overlay
Optional CPU, RAM, and GPU readout, layered right on top of the ambient display.
Performance controls
Cap the overlay frame rate and toggle VSync to trade smoothness for lower GPU load and heat.
Google sign-in
One account, up to 2 devices. No passwords to manage, no separate DemShade account to create.
A profile for every kind of session.
Save a full configuration once, then switch between them in one click or one hotkey.
Warm, viewer-friendly
Warm tones, medium motion. Looks good in the corner of a stream without pulling focus from viewers.
Cool, slow motion
Cool tones, slow movement. Built for long sessions late at night, when your eyes tire first.
Static, distraction-free
Switches to classic static color mode. Zero motion, zero distraction next to a fast-paced game.
One payment. No subscription.
Free is a real trial, not a crippled demo — 3 hours of runtime you can spend however you like, refilling automatically 24 hours after it runs out. Sign in with Google to start it; no separate account or password to create.
- 3 hours of runtime, any time — refills 24h after it runs out
- All secondary monitors, no count limit
- 4 effects: 2 shaders + 2 classic modes
- Automatic fullscreen detection
- No profiles, scheduling, hotkeys, audio-reactive, or custom shaders
- Unlimited runtime, no 3-hour cap
- All 49 effects across 4 categories, including custom shader import
- Per-monitor control, profiles, scheduling, global hotkeys
- Audio-reactive effects + system stats overlay
- One Google account, up to 2 devices
- Updates included, no renewal
Get your first ambient display running in under a minute.
Install it, pick a profile, go fullscreen in a game. DemShade handles the rest.
Download DemShade for Windows