Free software · GPL-3.0-or-later

A real-time engine built on Vulkan 1.4

Lumora is a C++23 3D engine with an integrated editor: physically based rendering, rigid-body physics, live collaborative editing over your network or the internet, and a Hub that installs editor versions side by side.

Download the Hub Read the documentation

The Lumora editor: scene hierarchy, a Vulkan viewport showing a grid of PBR spheres with shadows, and the inspector

What is in it

Everything listed here is implemented and covered by tests - the README separates what works today from the roadmap.

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Modern renderer

Vulkan 1.4 with dynamic rendering, a render graph with automatic barriers and bindless descriptors. HDR PBR with normal maps, cascaded sun shadows with soft filtering, bloom, height fog and ACES tonemapping.

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Integrated editor

Docking UI around the viewport: hierarchy, reflection-driven inspector, gizmos with snapping, undo/redo for every edit, glTF import, play mode, GPU profiler. WASD fly camera with cursor lock on Wayland.

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Live collaboration

Edit one scene together on your LAN or through a playit.gg tunnel. Edits merge per field and you see each other's cameras. Imported models travel to whoever lacks them. Everything is TLS-encrypted.

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Physics

Jolt Physics rigid bodies - static, kinematic and dynamic - with box, sphere and capsule colliders, stepped at a fixed rate on Jolt's worker threads. Press Play in the editor.

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Hub and updates

The Hub installs editor versions side by side, opens each project in its version and offers stable, beta and alpha channels. Releases are signed, and updates download only the modules that changed.

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C++ scripts, hot-reloaded

Write behaviours in C++ in your project. The editor compiles them and reloads the game library every time you save, even while the game is playing.

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Built to be tested

More than 170 automated tests, including GPU tests that render real frames and check pixels, Vulkan validation in CI, and UI tests that drive the editor and the Hub.

Rendered by Lumora

Straight from the engine's headless renderer (lumora-editor --headless --render), using the project templates.

Two rows of spheres sweeping metallic and roughness values — Material showcase: metallic and roughness sweeps

The physics playground: a tower of crates, balls and a paddle casting shadows on a grid floor — Physics playground: cascaded shadows

A basic scene with a few primitive shapes under a sun — The basic template

Download

Install the Hub; it downloads and updates editor versions for you. Linux builds are tested on every release; Windows support is new, so please report problems.

Lumora Hub for Linux

x86-64, glibc 2.39 or newer (Ubuntu 24.04, Debian 13, Fedora 40, Arch). Needs a GPU and driver with Vulkan 1.4.

Download AppImage

Make it executable (chmod +x lumora-hub-x86_64.AppImage) and run it. Prefer a folder? Portable .zip.

Lumora Hub for Windows

Windows 10 or 11, x86-64. Needs a GPU and driver with Vulkan 1.4.

Download installer

Installs for your user, no administrator rights needed. The installer is not code-signed yet, so SmartScreen may ask you to confirm (More info → Run anyway). Portable .zip.

Build from source

CMake + Ninja, GCC 14 or Clang 18, Qt 6.5+, Vulkan SDK 1.4.

cmake --preset release
cmake --build --preset release

Build instructions