WGSL transpiler

This is a simple tool to convert WGSL shaders into other formats. You can use it from the command line or in JavaScript (Node.js or browser).

How to Use

Command Line

cargo run --features cli -- shader.wgsl --format glsl

cargo run --features cli -- shader.wgsl --format hlsl --output shader.hlsl

Formats you can use: wgsl, glsl, hlsl, metal, spirv, spirv-asm

In JavaScript

Node.js:

const { compileShader, init } = require('./pkg-nodejs/wgsl_wasm_transpiler.js');
init();

const wgsl = '@fragment fn main() -> @location(0) vec4<f32> { return vec4<f32>(1.0, 0.0, 0.0, 1.0); }';
const glsl = compileShader(wgsl, 'glsl');
console.log(glsl);

Browser:

import init, { compileShader } from './pkg/wgsl_wasm_transpiler.js';
await init();
const result = compileShader(wgslCode, 'glsl');

Building

For the CLI:

cargo build --release --features cli

For WebAssembly:

cargo install wasm-pack
./scripts/build-wasm.sh

Output Formats

• WGSL
• GLSL
• HLSL
• Metal
• SPIR-V (binary or assembly)

SPIR-V can be output as:

• spirv: binary file (.spv), or base64 string in JS
• spirv-asm: readable text (.spvasm)

Examples

• examples/web-example.html — browser demo
• examples/nodejs-example.js — Node.js demo

API

• compileShader(wgsl_code: string, format: string) -> string
• getSupportedFormats() -> string[]
• init()

Testing

cargo test --features cli
cargo test --features wasm
./scripts/test-all.sh
python3 scripts/serve.py
# Then open http://localhost:{port}/examples/web-example.html