PNGine

Declarative WebGPU in S-expressions that match the spec 1:1. Compile them to a few hundred bytes of bytecode, and play anywhere WebGPU runs.

Get startedSee Samples

A complete animated program, in SJON, the S-expression format PNGine reads:

(pass-graph
  (pass :name main :code """
    @fragment fn fs(@builtin(position) pos: vec4f) -> @location(0) vec4f {
      let uv = pos.xy / vec2f(pngine.width, pngine.height);
      return vec4f(uv, sin(pngine.time) * .5 + .5, 1);
    }
  """))

pngine art.sjon   # → art.png: image, bytecode and runtime in one file

Write

Every WebGPU resource is a form, checked against a WebGPU schema: buffers, textures, pipelines, passes, compute. Or skip all of that with the seven-line sugar above. SJON reference

Compile

One CLI: validate, compile, render, inspect, diff. A triangle is 631 bytes of bytecode; tucked into a PNG with its runtime, 4.6 KB. CLI reference

Run

A functional browser API from 3 KB to 17 KB gzipped, or a standalone HTML file of around 1 KB with no dependency at all. JavaScript API

Inspect

Replay any compiled program against a mock GPU that records calls instead of drawing: call traces, per-frame analysis, black-canvas diagnosis, no browser needed. Inspect a payload