ValveSoftware / ValveSoftware/Proton

[RFE] Support for 32-bit OpenXR

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#6,808 1 comment 4 reactions 0 assignees View on GitHub

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Feature Request
Dominant language
C++
Stars
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Forks
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PR merge metrics
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Description

Feature Request

I confirm:

  • that I haven't found another request for this feature.
  • that I have checked whether there are updates for my system available that
    contain this feature already.

Description

Unfortunately there are still a few 32-bit VR games in existence like Half-life (2) VR mod.
Using OpenComposite (https://gitlab.com/znixian/OpenOVR) these could be run with OpenXR instead
by replacing the game's openvr_api.dll with the OpenComposite dll. But this is currently not
possible without 32-bit OpenXR loader support.

Btw this is not related to support for Monado. This can be even used with SteamVR as OpenXR runtime
to bypass bugged behaviour in Proton's or SteamVR's OpenVR implementation.
Since OpenComposite is open source unlike SteamVR this can also be used to bring features to OpenVR
that aren't otherwise possible.

Contributor guide

No contributing guide indexed for this repository

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

The issue names no files, tests, or entry points, so first trace how Proton handles OpenXR and 32-bit loader support. Compare the existing loader paths and runtime assumptions, including OpenComposite and SteamVR rather than Monado. Done means 32-bit VR games can use OpenXR through the described setup.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
operating-systems
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
40/100

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