XR Runtime Picker for OpenXR

This is a cross-platform tool to allow you to easily change your active OpenXR runtime. (It also serves as a bit of a testbed for Rust GUI techniques, though I use it "in production".)

Features include:

• Finding available runtimes
  • On Windows using the AvailableRuntimes registry key and a few hard-coded extras
  • On Linux by listing the files in the config directories
• Parsing runtime manifests for the runtime name, as well as adding names to select exceptions via heuristics.
• Working with additional runtimes manually added (by browsing to or drag-and-dropping a manifest) - useful for runtime developers.
• Remembering these extra runtimes between sessions.
• Identifying the active runtime (or runtimes in the case of Windows, 32 and 64 bit).
• Setting the active runtime(s)
  • On Windows by setting the registry value/values
  • On Linux by setting a per-user symlink to the manifest.

Maintained at https://github.com/rpavlik/xr-picker.

Installation and Use

• People using Windows can download a prebuilt release binary from Releases.
• People using Linux can also try a prebuilt release binary from Releases (they should be fairly compatible, being built on Ubuntu 20.04), though you might need to build it locally if you have issues.
• On either platform, you can install from packaged source using Cargo, the Rust package manager, by running cargo install xrpicker-gui.
• If you have cloned the source, the normal Rust build and run process will work (cargo build, cargo test, cargo run --bin xrpicker-gui, etc.)

Structure

The tool is split into two Rust "crates":

• xrpicker-core, aka xrpicker on crates.io, contains utilities for finding and manipulating runtimes, as well as framework-independent data structures intended for use in a GUI frontend.
  • It includes a very minimal (for now) CLI tool that can only list the active runtime and available runtimes: this will probably be upgraded eventually to be able to set the active runtime, in part so that the Windows GUI build can invoke it as administrator instead of having to run the whole GUI as administrator.
• xrpicker-gui, (xrpicker-gui on crates.io) is a cross-platform GUI frontend made using egui.

Development and Contribution

We welcome community contributions to this project. We have a Code of Conduct; by participating in this project you agree to its terms.

CI enforces REUSE, cargo-deny, and simple build tests on Linux and Windows. It is a bit hard to test even the core library because it works with registry keys and the file system, and I have not yet investigated how to mock these cleanly in Rust for automated testing.

License

Licensed under either of the Apache License, Version 2.0 or the MIT license at your option.

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in this crate by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

This software conforms to the REUSE specification.