I abondoned this project but this was the plan.

WebGPU MSDF Font Renderer

This library aims to provide real-time MSDF font rendering using WebGPU, with on-the-fly MSDF generation from .ttf font executed in WebAssembly scripts running in multiple WebWorkers.
The main thread orchestrates the workers, dispatching glyphs for MSDF computation, updating a shared texture atlas and metadata, and persisting both in IndexedDB for efficient caching and session recovery.

Architecture

• Main Thread

  • Orchestrates workers.
  • Packs glyphs into a texture atlas (using skyline/bin packing).
  • Updates WebGPU texture and glyph metadata.
  • Persists atlas and metadata into IndexedDB.

• WebWorkers

  • Run Rust-compiled WASM scripts.
  • Compute MSDF bitmaps and glyph metrics for requested characters.
  • Return results (bitmap + metrics) to the main thread.

• IndexedDB

  • Stores atlas data (raw buffer or PNG) and glyph metadata.
  • Ensures fast reloading and avoids recomputation on subsequent sessions.

Roadmap

• Setup HTML CSS Layout
• Setup main script <-> webworker communication
• Setup WebGPU and Atlas display <- I gave up here
• Implement MSDF generation wasm script
• Implement MSDF webGPU rendering
• Implement IndexedDB persistance logic and lifecycle

License

IDKY Licence - I don't know yet, license