Live wallpaper · Custom bar · Themed cursors
Wallmosphere replaces the Windows wallpaper with a GPU shader and the taskbar with a bar drawn in Direct2D. Sixty frames a second behind your icons, for about two per cent of one core.
Windows 10 (19045) and Windows 11 · x64 · the sky behind this page is the same scene, running in your browser.
A theme is a folder with a theme.toml in it. Each table
takes over one part of the desktop, and you can use as few of them as you like.
The scene compiles once and runs on the GPU: stars that twinkle, a streak across the sky every fourteen seconds, light that leans when you move the mouse. It falls back to the still image, and pauses on fullscreen and on battery.
The Windows taskbar is hidden and a pill takes its place: running windows with live thumbnails, a search box, the tray, and a clock in whatever format you write. It registers as an AppBar, so maximised windows stop where it starts.
A whole cursor set is generated from three colours, and a click leaves something behind — a ring, a spark, a shockwave, or a burst of confetti in the theme's own palette. The right button always keeps the ring.
The whole app — wallpaper, bar and cursors running together — measured against a browser-based wallpaper engine doing the same job.
Everything at once, at 60 fps. The bar alone is 0.3 %.
One fullscreen fragment shader, timed with --bench.
A wallpaper that embeds Chromium needs 300 to 800 MB.
The wallpaper stops on fullscreen, on battery, and when the screen locks.
Measured on Windows 10 22H2, 20 logical cores, RTX 5070 Ti, 1920×1080.
Install one from the browser and the app picks it up. Nothing to unzip.
A theme is a TOML file, a 16:9 image and an optional fragment shader. That is the whole format.
The desktop app carries an editor. Drop in a wallpaper, move the sliders your shader exposes and watch the change land on the live desktop, then publish to the catalogue with a token from your account.
See the formatThe authoring guide is written to be pasted into a model: it defines the uniform block, the helper functions in scope and the cost budget per pixel. Lint whatever comes back before you install it.
Read the guide
Wallmosphere
