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e={354:0,869:0};d.f.j=(t,r)=>{var a=d.o(e,t)?e[t]:void 0;if(0!==a)if(a)r.push(a[2]);else if(/^(354|869)$/.test(t))e[t]=0;else{var o=new Promise(((r,o)=>a=e[t]=[r,o]));r.push(a[2]=o);var n=d.p+d.u(t),f=new Error;d.l(n,(r=>{if(d.o(e,t)&&(0!==(a=e[t])&&(e[t]=void 0),a)){var o=r&&("load"===r.type?"missing":r.type),n=r&&r.target&&r.target.src;f.message="Loading chunk "+t+" failed.\n("+o+": "+n+")",f.name="ChunkLoadError",f.type=o,f.request=n,a[1](f)}}),"chunk-"+t,t)}},d.O.j=t=>0===e[t];var t=(t,r)=>{var a,o,n=r[0],f=r[1],i=r[2],c=0;if(n.some((t=>0!==e[t]))){for(a in f)d.o(f,a)&&(d.m[a]=f[a]);if(i)var b=i(d)}for(t&&t(r);c Making Clients | Stardust XR - +

Making Clients

A Stardust client is at its core an executable that connects to a stardust server instance at $XDG_RUNTIME_DIR/stardust-[0-32], sends and receives messages according to the Stardust protocol.

Rust​

Stardust uses Rust due to its speed and reliability in build and runtime, so you will need to install cargo (preferably through rustup). If you're unsure how to use Rust then a great guide is at https://doc.rust-lang.org/book/.

stardust-xr​

stardust-xr is a connecting library for servers and clients that deals with the lowest level of connecting to ensure basic compatibility is ensured. As a client developer you most likely won't need it, but it's good to know about it.

Fusion​

stardust-xr-fusion is the high level library you'll probably be using to create your clients. It features structs for all Stardust objects and trait-based + async systems for handling events from the server.

To get started, create a new Rust project using

cargo new

and include the stardust-xr-fusion dependency in your cargo.toml. Documentation will be available at https://docs.rs/crate/stardust-xr-fusion/latest.

Molecules​

stardust-xr-molecules is an even higher level widget library built on Fusion similar to MRTK to get your clients up and running faster. Documentation will be available at https://docs.rs/crate/stardust-xr-molecules/latest.

- + \ No newline at end of file diff --git a/docs/getting-started/setup.html b/docs/getting-started/setup.html index 068ce9fa..cd90f87e 100644 --- a/docs/getting-started/setup.html +++ b/docs/getting-started/setup.html @@ -4,7 +4,7 @@ Setup | Stardust XR - + @@ -12,7 +12,7 @@

Setup

First you need to install and run the server from https://github.com/StardustXR/server. Follow the README. If you have issues getting OpenXR to work, try running https://gitlab.freedesktop.org/monado/demos/xrgears first.

After the server is running, you'll need to run some clients. Here's a demo showing some off: A showcase of some different clients

Non-exhaustive list of clients:

  • Flatland: A panel item UI (XR equivalent of a window manager) so you can interact with your apps using virtual touchscreens. To show Wayland apps, run them with the proper WAYLAND_DISPLAY environment variable, in the server's startup script, or use a stardust launcher such as gravity or protostar. Flatland works great in 3DoF or 6DoF with direct touch and pointer interaction. A flat panel containing the prism launcher
  • Gravity: Command line tool to launch programs inside of stardust at a particular offset in space. This is nestable so you can run a script using gravity, and then gravity inside that script to make a whole composed setup out of thin air! It also ensures that everything launched through it will properly connect to the stardust server, such as wayland clients.
  • Protostar: Prototype app launcher library/examples. Grab app icons and drop them in space to launch apps where they're dropped.
  • Magnetar: Workspaces in 3D. Any object inside the rings will move with them, so you can move a bunch of stuff out of the way temporarily when you don't need it.
- + \ No newline at end of file diff --git a/docs/getting-started/tech-overview.html b/docs/getting-started/tech-overview.html index 32ddebff..ccd61d19 100644 --- a/docs/getting-started/tech-overview.html +++ b/docs/getting-started/tech-overview.html @@ -4,13 +4,13 @@ Technical Overview | Stardust XR - +

Technical Overview

Server​

The server is what renders all the meshes of each client, takes in input from input methods, and spits out input to input handlers according to the SUIS (Spatial Universal Interaction System). As well, the server is going to be part Wayland compositor and OpenXR runtime so all 2D and XR applications can be used together at once (if the hardware allows). It is the glue of Stardust, allowing any number of clients and apps to work in harmony while allowing the user full control in an intuitive way.

As new technologies come out, keeping the same server and trying to progressively upgrade it may lead to bloat and issues, so the protocol is designed to make creating new servers possible without too much hassle or to make servers modular. Old interfaces can be deprecated without breaking the overall system, and new interfaces can be added if needed due to the object-oriented design. The design is highly inspired by game engines, however the reference server is made in StereoKit due to it being more optimal.

Reference Server​

Stardust has a reference server, but unlike other display servers this reference server is just as functional as any other Stardust server would be, because all the functionality is implemented in the clients. The server is just the glue.

The reference server uses StereoKit as its backend for many reasons:

  • Much more lightweight than any other framework/other engine
    • It was originally designed to run AR apps on HoloLens, and now it works on Quest
    • It's able to render thousands of objects on a HoloLens without breaking a sweat
  • Does not include unnecessary features that slow down performance
    • Physics and UI are not needed for Stardust, but those do not actively run and can always have an option to not be compiled at all.
  • Uses C-style C++ meaning not bytecode or interpreted (however has a C# API that is not used by Stardust)
  • Uses immediate mode rendering meaning the logic is many times easier to implement
  • Exposes its rendering insides whenever needed
    • Very needed for Wayland when it needs to display EGL Wayland surface textures on meshes
    • Overriding the depthbuffer per-pixel in fragment shader is useful for XR depth compositing
  • Is constantly getting new updates faster than most engines
    • World semantics for OpenXR was implemented ~1 week after the official OpenXR extension release
  • Is optimized to load resources JIT
    • Many game engines are best at caching their assets, but this is not practical in a display server
  • Uses OpenXR as its backend out of the box

IPC​

The Stardust XR IPC uses Unix domain sockets for communication and a protocol based on flatbuffers/flexbuffers.

Protocol​

The Stardust XR protocol is object-oriented, depending on a scenegraph on the server end and scenegraph or functionally equivalent structure on the client end. This allows easier implementation of the protocol while still remaining fast, reliable, and extensible.

Clients​

The clients tell the server what models to draw, where they would like to accept input in, etc. Stardust clients are much more suited to widgets or user interfaces to 2D/XR apps.

- + \ No newline at end of file diff --git a/docs/getting-started/tutorial.html b/docs/getting-started/tutorial.html index e11a27d2..1b1620c4 100644 --- a/docs/getting-started/tutorial.html +++ b/docs/getting-started/tutorial.html @@ -4,14 +4,14 @@ Tutorial | Stardust XR - +

Tutorial

Setup OpenXR​

note

if you have no headset or other OpenXR device, you can skip this step and start with installing nix.

SteamVR​

Archlinux​

TODO

NixOS​

TODO

Others​

TODO: collect links for setup on different distrons

Monado​

Archlinux​

TODO

NixOS​

TODO

Others​

TODO: collect links for setup on different distrons

Install nix​

For easy development and distribution this project uses the nix package manager.
This allows to ensure all dependency requirements are met.

info

Make sure to have flakes enabled.

You can install nix on all common linux systems:

Archlinux​

# install git and nix
sudo pacman -Sy git nix
# enable flakes
echo 'experimental-features = nix-command flakes' | sudo tee -a /etc/nix/nix.conf
# enable nix daemon service
sudo systemctl enable nix-daemon.service
# add the current user to nix-users group
sudo usermod -aG nix-users $(id -un)
# reboot to apply user and service changes
sudo systemctl reboot

NixOS​

TODO

Others​

TODO: collect links for setup on different distrons

Run Demo​

  1. clone https://github.com/StardustXR/telescope
  2. make sure your OpenXR device works (if 2D mode is not used)
  3. run nix run .

Run wayland client​

# run demo.mp4 video in a loop within Stardust
WAYLAND_DISPLAY=wayland-0 DISPLAY= mpv Downloads/demo.mp4 --loop
- + \ No newline at end of file diff --git a/docs/overview.html b/docs/overview.html index b8fc302d..f5df017f 100644 --- a/docs/overview.html +++ b/docs/overview.html @@ -4,14 +4,14 @@ Overview | Stardust XR - +

Overview

Stardust XR (formerly known as Stardust) is an XR display server designed for Linux-based systems.
-Unlike traditional display servers that focus on 2D screens, Stardust XR introduces new conventions to utilize unbounded 3D space in virtual or real environments.

Priorities​

  • 3D Environment Focus: While supporting 2D clients through the Wayland protocol, Stardust XR primarily aims to create and manage 3D environments.

  • Standard Interfaces: Utilizes Wayland and OpenXR for 2D and XR app integration.

  • Stardust Protocol: Implements a special protocol for:

    • Creating virtual objects
    • Developing 3D UIs around 2D apps (Panel Shells)
    • Handling data as Items that can represent files, Wayland surfaces, etc.

  • Personal Device Interaction: Focuses on individual user interactions rather than collaborative 3D spaces.

  • Flexible Object Interaction: Users can choose objects that best suit their current scenario, with easy setup for default configurations.

Architecture​

simplified architecture diagram

Projects & Components​

  • telescope: bundle most used components to have a demo environment set up
  • server: Reverence implementation of the StardustXR server (similar to wayland's weston)
  • core lib: Rust crates and schemas for connecting stardust server and client
  • website: The location where documentation is done and the website is generated from
  • protostar: Demo application launcher (like nwg-drawer, ...)
  • black hole: Spatial storage for stardust xr
  • gravity: "Utility to launch apps and stardust clients spatially" ?!? is it an ap lancher like protostar? I could not got it to work ...
  • magnetar: Workspaces client
  • atmosphere: Environment, homespace, and setup client
  • orbit: Simple Panel Item UI ?!?
  • comet: Annotate things?!?
- +Unlike traditional display servers that focus on 2D screens, Stardust XR introduces new conventions to utilize unbounded 3D space in virtual or real environments.

Priorities​

  • 3D Environment Focus: While supporting 2D clients through the Wayland protocol, Stardust XR primarily aims to create and manage 3D environments.

  • Standard Interfaces: Utilizes Wayland and OpenXR for 2D and XR app integration.

  • Stardust Protocol: Implements a special protocol for:

    • Creating virtual objects
    • Developing 3D UIs around 2D apps (Panel Shells)
    • Handling data as Items that can represent files, Wayland surfaces, etc.

  • Personal Device Interaction: Focuses on individual user interactions rather than collaborative 3D spaces.

  • Flexible Object Interaction: Users can choose objects that best suit their current scenario, with easy setup for default configurations.

Architecture​

simplified architecture diagram

Projects & Components​

  • telescope: bundle most used components to have a demo environment set up
  • server: Reference implementation of the StardustXR server (similar to Xorg)
  • core lib: Rust crates and schemas for connecting stardust server and client
  • website: The location where documentation is done and the website is generated from
  • protostar: App launcher library and examples including futuristic hexagon launcher
  • black hole: Universal minimization of Stardust objects
  • gravity: Launch programs with a certain offset in 3D space
  • magnetar: Example workspaces client
  • atmosphere: 3D environment with natural momentum-based movement
  • comet: Annotate in 3D wherever you want amongst your other apps!
+ \ No newline at end of file diff --git a/docs/terminology.html b/docs/terminology.html index 6242eb2e..cdd2a554 100644 --- a/docs/terminology.html +++ b/docs/terminology.html @@ -4,13 +4,13 @@ Glossary | Stardust XR - +

Glossary

  • Item: a virtual object that represents data
  • Panel Shells: 3D UIs around 2D apps
  • ...
- + \ No newline at end of file diff --git a/index.html b/index.html index 12aef5c6..9fbe5b4b 100644 --- a/index.html +++ b/index.html @@ -4,13 +4,13 @@ Stardust XR - +

Stardust XR

We Fight for the Users!

Get Started
Flexible

Flexible

Stardust allows developers to make XR widgets or interfaces and run them among others. You don't have to make a whole system UI, just a few pieces.

Streamlined

Streamlined

Stardust is made using StereoKit, an XR application/rendering toolkit allowing for a fast and lightweight display server.

  • A series of application windows as 3D panels similar to small wooden boards in proportions with a Panasonic CRT TV model in the center showing Agregore (the browser).

    Panels for wayland apps and a CRT panel shell for XR UI.

  • A series of application windows as 3D panels similar to small wooden boards in proportions with a Panasonic CRT TV model in the center showing Agregore (the browser).

    Panels for wayland apps and a CRT panel shell for XR UI.

1 of 2

- + \ No newline at end of file diff --git a/roadmap.html b/roadmap.html index 0f7f3e5c..601ae601 100644 --- a/roadmap.html +++ b/roadmap.html @@ -4,13 +4,13 @@ Roadmap | Stardust XR - +

Roadmap

1.0 (Minimum Viable Product)​

  • Core functionality
    • IPC+RPC
  • Client
    • Fusion
      • Initial connection
      • Node type creation/destruction
      • Interface interaction
      • Callbacks
      • Documentation
  • Server
    • Per-client scenegraph
    • Statically link StereoKit
    • Basic features
      • Logic step
      • Spatial transforms
        • Absolute movement
        • Relative movement
        • Spatial parenting
      • Models
        • Loading
        • Setting material parameters
      • Fields (SDFs for interaction)
        • Box field
        • Rounded box field
        • Sphere field
      • Input
        • Input methods
          • Hand input
            • Creation from OpenXR
            • Creation from StereoKit (flatscreen)
            • Interaction with clients
          • Pointer input
            • Creation from StereoKit (flatscreen, mouse cursor ray)
            • Interaction with clients
        • Input handler
          • Async input propagation through distance
      • Environment
        • Set skytex
        • Set skylight
      • Items
        • Base item class
        • Base item accepter class
        • Environment equirectangular item
        • Environment equirectangular accepter
      • 2D integration
        • Panels
          • Panel item
          • smithay (for Wayland)
            • Rendering
            • Input seats
        • Panel shells
          • Accept panel items
          • Put surface on model material's texture
          • Feed input through to panel
          • Release panel items
  • Daily Drivable System
    • GUI App Launcher (Protostar)
      • Get desktop files
      • Find and parse icons
      • Display icons and desktop files in grid
      • Launch executables spatially
    • Panel Item UI
      • Flatland

More to come!

- + \ No newline at end of file