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penpot/render-wasm
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Andrey Antukh e4d1816117 ⬆️ Update pnpm to 12.3.4 across all workspaces 
Run `corepack use pnpm@next-12` (resolved to 12.3.4) on every directory
with a package.json: the repo root, the 11 module workspaces, and all
submodules. Every packageManager field now carries the same pinned
version and hash; the root and backend move off 11.20.0.

Fix the composable-test-suite workspace config (esbuild allowBuilds
placeholder left by pnpm 12) so its install passes, and add the missing
packageManager fields to frontend/packages/ui and mcp/packages/plugin,
since corepack only updates existing fields.

Document the canonical update procedure in
.serena/memories/workflow/updating-pnpm.md.

AI-assisted-by: omen-alpha
2026-09-09 08:04:11 +02:00
..
docs
✨ Add single-file export to PDF using the WebGL render (#9860)
2026-06-11 10:41:21 +02:00
macros
🎉 Add background blur for wasm render
2026-03-18 18:05:30 +01:00
src
🐛 Fix background blur clipping (#11532)
2026-09-07 15:51:27 +02:00
_build_env
♻️ Extract GPU-free RenderResources; add headless wasm exports (#10653)
2026-07-22 09:56:21 +02:00
.gitignore
✨ Rename to render-wasm and make it load using dynamic import
2024-10-23 17:18:04 +02:00
build
Merge remote-tracking branch 'origin/staging' into develop
2025-12-12 12:16:41 +01:00
build.rs
🔧 Autogenerate serialization values for wasm enums (#7296)
2025-09-16 12:29:14 +02:00
Cargo.lock
✨ Create wasm_error macro to handle Wasm errors differentiating critical vs recoverable
2026-03-09 07:22:32 +01:00
Cargo.toml
✨ Add single-file export to PDF using the WebGL render (#9860)
2026-06-11 10:41:21 +02:00
lint
🎉 Update skia version
2026-02-25 10:30:29 +01:00
package.json
⬆️ Update pnpm to 12.3.4 across all workspaces
2026-09-09 08:04:11 +02:00
pnpm-lock.yaml
⬆️ Update pnpm to 12.3.4 across all workspaces
2026-09-09 08:04:11 +02:00
pnpm-workspace.yaml
⬆️ Update dependencies
2026-06-30 16:15:30 +02:00
README.md
✨ Add single-file export to PDF using the WebGL render (#9860)
2026-06-11 10:41:21 +02:00
test
🎉 Update skia version
2026-02-25 10:30:29 +01:00
watch
🔧 Fix watch script
2026-02-18 09:57:25 +01:00
watch_test
🎉 Update skia version
2026-02-25 10:30:29 +01:00

README.md

Penpot WASM render

This is the canvas-based WebAssembly render engine for Penpot.

Rust & Emscripten

This project is a Rust crate that targets Emscripten (wasm32-unknown-emscripten).

We use wasm32-unknown-emscripten compilation target:

  • It compiles Rust code into WASM
  • It generates the JavaScript code (“glue”) to load and run the WASM code

How Rust, Emscripten, and WASM are connected

Skia

We use Skia, an Open Source 2D graphics library. In particular, the render engine uses Skia via custom binaries of the rust-skia crate.

How to build

With the Penpot Development Environment running, create a new tab in the tmux.

cd penpot/render-wasm
./build

You can also use ./watch to run the build on every change.

The build script will compile the project and copy the .js and .wasm files to their correct location within the frontend app.

Architecture overview

Edit your local frontend/resources/public/js/config.js to add the following flags:

  • enable-feature-render-wasm to enable this render engine.
  • enable-render-wasm-dpr (optional), to enable using the device pixel ratio.

How to test

We currently have two types of tests:

  • Unit tests
cd penpot/render-wasm
./test

Technical documentation