MystralNative v0.1.5

MystralNative v0.1.5

WebTransport: proper WHATWG Streams 🌊

WebTransport streams are now real WHATWG streams, so the canonical
W3C WebTransport samples
run unmodified.

• New global ReadableStream, WritableStream, TransformStream,
  TextEncoderStream and TextDecoderStream implementations.
• WebTransport readable/writable now support getReader()/getWriter(),
  pipeTo(), pipeThrough(), tee(), and async iteration
  (for await (const chunk of stream) { … }).
• Added transport.datagrams.createWritable().

Verified end-to-end against a live WebTransport echo server (datagrams +
unidirectional + bidirectional streams) under V8, QuickJS and JSC across
macOS, Linux and Windows.

WebTransport itself (QUIC + HTTP/3 via quiche) ships built in by default, as of
v0.1.4 — no custom build required.

Roadmap: advanced send-side controls (sendOrder, sendGroup,
writer.atomicWrite()/commit(), transport.draining) and
serverCertificateHashes pinning remain future work.

MystralNative v0.1.4

Adding WebTransport (beta) support

This release adds WebTransport (beta) to MystralNative — low-latency client networking over HTTP/3 (QUIC), the same WebTransport API you use in the browser. It supports unreliable datagrams and reliable bidirectional / unidirectional streams, backed by Cloudflare quiche. The QUIC socket runs on a lightweight per-frame poll loop with no extra runtime dependency, so it works across desktop and mobile builds.

Beta notes

• serverCertificateHashes (self-signed certificate pinning) is not yet supported; peer verification is currently relaxed for local/dev servers.
• See the WebTransport guide for usage and the supported API surface.

Downloads

Prebuilt binaries for macOS (arm64 + x64), Linux (x64), and Windows (x64), across the QuickJS / V8 / JSC engines and Dawn / wgpu backends.

See the README for full documentation.

MystralNative v0.1.3

MystralNative v0.1.3

A lightweight, cross-platform runtime for JavaScript games using WebGPU.

Downloads

macOS (Apple Silicon - ARM64):

JS Engine	WebGPU Backend	Download
QuickJS	wgpu	mystral-macOS-arm64-quickjs-wgpu.zip
V8	wgpu	mystral-macOS-arm64-v8-wgpu.zip
JSC	wgpu	mystral-macOS-arm64-jsc-wgpu.zip
QuickJS	Dawn	mystral-macOS-arm64-quickjs-dawn.zip
V8	Dawn	mystral-macOS-arm64-v8-dawn.zip
JSC	Dawn	mystral-macOS-arm64-jsc-dawn.zip

macOS (Intel - x64):

JS Engine	WebGPU Backend	Download
JSC	Dawn	mystral-macOS-x64-jsc-dawn.zip

Linux (x64):

JS Engine	WebGPU Backend	Download
QuickJS	wgpu	mystral-linux-x64-quickjs-wgpu.zip
V8	wgpu	mystral-linux-x64-v8-wgpu.zip
QuickJS	Dawn	mystral-linux-x64-quickjs-dawn.zip
V8	Dawn	mystral-linux-x64-v8-dawn.zip

Windows (x64):

JS Engine	WebGPU Backend	Download
QuickJS	wgpu	mystral-windows-x64-quickjs-wgpu.zip
V8	wgpu	mystral-windows-x64-v8-wgpu.zip
QuickJS	Dawn	mystral-windows-x64-quickjs-dawn.zip
V8	Dawn	mystral-windows-x64-v8-dawn.zip

Recommended Configurations

• macOS: jsc-wgpu (uses system JavaScriptCore, best performance)
• Linux: quickjs-wgpu (smallest binary, good performance)
• Windows: v8-wgpu (best JS performance)

Quick Start

# Extract and run
unzip mystral-<platform>.zip
./mystral run your-game.js

See README for full documentation.

MystralNative v0.1.2

MystralNative v0.1.2

A lightweight, cross-platform runtime for JavaScript games using WebGPU.

Downloads

macOS (Apple Silicon - ARM64):

JS Engine	WebGPU Backend	Download
QuickJS	wgpu	mystral-macOS-arm64-quickjs-wgpu.zip
V8	wgpu	mystral-macOS-arm64-v8-wgpu.zip
JSC	wgpu	mystral-macOS-arm64-jsc-wgpu.zip
QuickJS	Dawn	mystral-macOS-arm64-quickjs-dawn.zip
V8	Dawn	mystral-macOS-arm64-v8-dawn.zip
JSC	Dawn	mystral-macOS-arm64-jsc-dawn.zip

macOS (Intel - x64):

JS Engine	WebGPU Backend	Download
JSC	Dawn	mystral-macOS-x64-jsc-dawn.zip

Linux (x64):

JS Engine	WebGPU Backend	Download
QuickJS	wgpu	mystral-linux-x64-quickjs-wgpu.zip
V8	wgpu	mystral-linux-x64-v8-wgpu.zip
QuickJS	Dawn	mystral-linux-x64-quickjs-dawn.zip
V8	Dawn	mystral-linux-x64-v8-dawn.zip

Windows (x64):

JS Engine	WebGPU Backend	Download
QuickJS	wgpu	mystral-windows-x64-quickjs-wgpu.zip
V8	wgpu	mystral-windows-x64-v8-wgpu.zip
QuickJS	Dawn	mystral-windows-x64-quickjs-dawn.zip
V8	Dawn	mystral-windows-x64-v8-dawn.zip

Recommended Configurations

• macOS: jsc-wgpu (uses system JavaScriptCore, best performance)
• Linux: quickjs-wgpu (smallest binary, good performance)
• Windows: v8-wgpu (best JS performance)

Quick Start

# Extract and run
unzip mystral-<platform>.zip
./mystral run your-game.js

See README for full documentation.

MystralNative v0.1.1

MystralNative v0.1.1

A lightweight, cross-platform runtime for JavaScript games using WebGPU.

Downloads

macOS (Apple Silicon - ARM64):

JS Engine	WebGPU Backend	Download
QuickJS	wgpu	mystral-macOS-arm64-quickjs-wgpu.zip
V8	wgpu	mystral-macOS-arm64-v8-wgpu.zip
JSC	wgpu	mystral-macOS-arm64-jsc-wgpu.zip
QuickJS	Dawn	mystral-macOS-arm64-quickjs-dawn.zip
V8	Dawn	mystral-macOS-arm64-v8-dawn.zip
JSC	Dawn	mystral-macOS-arm64-jsc-dawn.zip

macOS (Intel - x64):

JS Engine	WebGPU Backend	Download
JSC	Dawn	mystral-macOS-x64-jsc-dawn.zip

Linux (x64):

JS Engine	WebGPU Backend	Download
QuickJS	wgpu	mystral-linux-x64-quickjs-wgpu.zip
V8	wgpu	mystral-linux-x64-v8-wgpu.zip
QuickJS	Dawn	mystral-linux-x64-quickjs-dawn.zip
V8	Dawn	mystral-linux-x64-v8-dawn.zip

Windows (x64):

JS Engine	WebGPU Backend	Download
QuickJS	wgpu	mystral-windows-x64-quickjs-wgpu.zip
V8	wgpu	mystral-windows-x64-v8-wgpu.zip
QuickJS	Dawn	mystral-windows-x64-quickjs-dawn.zip
V8	Dawn	mystral-windows-x64-v8-dawn.zip

Recommended Configurations

• macOS: jsc-wgpu (uses system JavaScriptCore, best performance)
• Linux: quickjs-wgpu (smallest binary, good performance)
• Windows: v8-wgpu (best JS performance)

Quick Start

# Extract and run
unzip mystral-<platform>.zip
./mystral run your-game.js

See README for full documentation.

MystralNative v0.1.0

MystralNative v0.1.0

A lightweight, cross-platform runtime for JavaScript games using WebGPU.

Downloads

macOS (Apple Silicon - ARM64):

JS Engine	WebGPU Backend	Download
QuickJS	wgpu	mystral-macOS-arm64-quickjs-wgpu.zip
V8	wgpu	mystral-macOS-arm64-v8-wgpu.zip
JSC	wgpu	mystral-macOS-arm64-jsc-wgpu.zip
QuickJS	Dawn	mystral-macOS-arm64-quickjs-dawn.zip
V8	Dawn	mystral-macOS-arm64-v8-dawn.zip
JSC	Dawn	mystral-macOS-arm64-jsc-dawn.zip

macOS (Intel - x64):

JS Engine	WebGPU Backend	Download
JSC	Dawn	mystral-macOS-x64-jsc-dawn.zip

Linux (x64):

JS Engine	WebGPU Backend	Download
QuickJS	wgpu	mystral-linux-x64-quickjs-wgpu.zip
V8	wgpu	mystral-linux-x64-v8-wgpu.zip
QuickJS	Dawn	mystral-linux-x64-quickjs-dawn.zip
V8	Dawn	mystral-linux-x64-v8-dawn.zip

Windows (x64):

JS Engine	WebGPU Backend	Download
QuickJS	wgpu	mystral-windows-x64-quickjs-wgpu.zip
V8	wgpu	mystral-windows-x64-v8-wgpu.zip
QuickJS	Dawn	mystral-windows-x64-quickjs-dawn.zip
V8	Dawn	mystral-windows-x64-v8-dawn.zip

Recommended Configurations

• macOS: jsc-wgpu (uses system JavaScriptCore, best performance)
• Linux: quickjs-wgpu (smallest binary, good performance)
• Windows: v8-wgpu (best JS performance)

Quick Start

# Extract and run
unzip mystral-<platform>.zip
./mystral run your-game.js

See README for full documentation.

MystralNative v0.0.9

Full Changelog: v0.0.8...v0.0.9

MystralNative v0.0.8

MystralNative v0.0.8

A lightweight, cross-platform runtime for JavaScript games using WebGPU.

Downloads

macOS (Apple Silicon - ARM64):

JS Engine	WebGPU Backend	Download
QuickJS	wgpu	mystral-macOS-arm64-quickjs-wgpu.zip
V8	wgpu	mystral-macOS-arm64-v8-wgpu.zip
JSC	wgpu	mystral-macOS-arm64-jsc-wgpu.zip
QuickJS	Dawn	mystral-macOS-arm64-quickjs-dawn.zip
V8	Dawn	mystral-macOS-arm64-v8-dawn.zip
JSC	Dawn	mystral-macOS-arm64-jsc-dawn.zip

macOS (Intel - x64):

JS Engine	WebGPU Backend	Download
JSC	Dawn	mystral-macOS-x64-jsc-dawn.zip

Linux (x64):

JS Engine	WebGPU Backend	Download
QuickJS	wgpu	mystral-linux-x64-quickjs-wgpu.zip
V8	wgpu	mystral-linux-x64-v8-wgpu.zip
QuickJS	Dawn	mystral-linux-x64-quickjs-dawn.zip
V8	Dawn	mystral-linux-x64-v8-dawn.zip

Windows (x64):

JS Engine	WebGPU Backend	Download
QuickJS	wgpu	mystral-windows-x64-quickjs-wgpu.zip
V8	wgpu	mystral-windows-x64-v8-wgpu.zip
QuickJS	Dawn	mystral-windows-x64-quickjs-dawn.zip
V8	Dawn	mystral-windows-x64-v8-dawn.zip

Recommended Configurations

• macOS: jsc-wgpu (uses system JavaScriptCore, best performance)
• Linux: quickjs-wgpu (smallest binary, good performance)
• Windows: v8-wgpu (best JS performance)

Quick Start

# Extract and run
unzip mystral-<platform>.zip
./mystral run your-game.js

See README for full documentation.

MystralNative v0.0.7

MystralNative v0.0.7

A lightweight, cross-platform runtime for JavaScript games using WebGPU.

Downloads

macOS (Apple Silicon - ARM64):

JS Engine	WebGPU Backend	Download
QuickJS	wgpu	mystral-macOS-arm64-quickjs-wgpu.zip
V8	wgpu	mystral-macOS-arm64-v8-wgpu.zip
JSC	wgpu	mystral-macOS-arm64-jsc-wgpu.zip
QuickJS	Dawn	mystral-macOS-arm64-quickjs-dawn.zip
V8	Dawn	mystral-macOS-arm64-v8-dawn.zip
JSC	Dawn	mystral-macOS-arm64-jsc-dawn.zip

macOS (Intel - x64):

JS Engine	WebGPU Backend	Download
JSC	Dawn	mystral-macOS-x64-jsc-dawn.zip

Linux (x64):

JS Engine	WebGPU Backend	Download
QuickJS	wgpu	mystral-linux-x64-quickjs-wgpu.zip
V8	wgpu	mystral-linux-x64-v8-wgpu.zip
QuickJS	Dawn	mystral-linux-x64-quickjs-dawn.zip
V8	Dawn	mystral-linux-x64-v8-dawn.zip

Windows (x64):

JS Engine	WebGPU Backend	Download
QuickJS	wgpu	mystral-windows-x64-quickjs-wgpu.zip
V8	wgpu	mystral-windows-x64-v8-wgpu.zip
QuickJS	Dawn	mystral-windows-x64-quickjs-dawn.zip
V8	Dawn	mystral-windows-x64-v8-dawn.zip

Recommended Configurations

• macOS: jsc-wgpu (uses system JavaScriptCore, best performance)
• Linux: quickjs-wgpu (smallest binary, good performance)
• Windows: v8-wgpu (best JS performance)

Quick Start

# Extract and run
unzip mystral-<platform>.zip
./mystral run your-game.js

See README for full documentation.

Sponza Demo (sponza-v1.0.5)

Sponza Demo

A standalone demo of the Sponza palace rendered natively with WebGPU via MystralNative (V8 + Dawn).

Uses Draco mesh compression + WebP textures for optimized asset size.

Downloads

Platform	File	GPU Requirement
macOS (Apple Silicon)	Sponza-macOS-arm64.zip	Metal (macOS 13+)
Linux (x64)	Sponza-linux-x64.zip	Vulkan
Windows (x64)	Sponza-windows-x64.zip	DirectX 12

Running

macOS:

unzip Sponza-macOS-arm64.zip
# First launch: right-click Sponza.app > Open (to bypass Gatekeeper)
open Sponza.app

Linux:

unzip Sponza-linux-x64.zip
cd Sponza
chmod +x sponza
./sponza

Windows:
Extract Sponza-windows-x64.zip and double-click sponza.exe.

Controls

• WASD — Move camera
• Mouse — Look around

Features

• Real-time day/night cycle with sun and moon
• Dynamic torch lighting with flickering
• Firefly particle effects
• Fog with time-of-day color transitions
• Post-processing: bloom, god rays, tone mapping

Built with MystralNative.