Layout Viewer

Rust library and CLI tool for rendering GDSII layouts with OpenGL / WebGL or converting them to SVG format.

The library can be used both natively and as a WebAssembly module.

Modules

• core is the data model for the application.
  • All types related to Project are defined here.
  • May include caches and acceleration structures.
• graphics is a simple WebGL rendering library.
  • Provides abstractions similar to libraries like THREE and Filament.
  • Knows nothing about circuits or app behavior.
  • All objects except Renderer can be constructed without a WebGL context.
• components defines a set of Yew components.
  • The UI for the web application lives here.
  • Components with the Page suffix are navigation targets.
• rsutils are utilities that you could imagine being a part of std.
  • Nothing here should know about circuits or the app.

Usage examples

# Open a GL window with the Intel 4004 chip:
cargo run --quiet --bin layout-viewer -- --gl assets/gds/intel-4004.gds

# Open a much larger GDS file using a release build:
cargo run --release --quiet --bin layout-viewer -- --gl assets/gds/caravel.gds

# Generate a SVG file:
cargo run --quiet --bin layout-viewer -- --gl assets/gds/mos-6502.gds mos-6502.svg

# Deploy a local web server:
trunk serve

Limitations

• Arefs are ignored (but we might fix this)
• Magnification of elements is ignored.
• The "absolute" flag is ignored for magnitudes and angles.
• Text, Nodes, and Boxes are ignored.

Dependencies

• gds21: GDSII parser
• svg: SVG generation
• wasm-bindgen: WebAssembly bindings
• anyhow: Error handling

Next tasks

Test / fix the app on mobile devices. (pointer events, not mouse events; hide sidebar)

Implement array refs.

Performance / smooth zoom.

Camera constraints / frame upon selection / "Reset view".

Van Wijk interpolation / marquee selection.

Better CI (Build & Run CLI, Doc Tests, Unit Tests).