ValveSoftware / ValveSoftware/wine

Input latency

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#60 10 comments 0 reactions 0 assignees View on GitHub

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Dominant language
C
Stars
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Forks
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No merged PRs in 30d

Description

Current input implementation has a high latency as compared to windows - which makes (e.g. first-person shooters) unplayable. A hacky test implementation using evdev (/dev/input) + eliminating unnecessary context switches (X11 -> wineserver -> client) yields very low latency input. It also results in more precise (mouse)-input when using relative events as compared to using X11 event data. Pls consider a low latency input implementation for proton.

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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

Start by examining the current input path described in the issue, especially the X11 -> wineserver -> client flow and the evdev (/dev/input) test implementation. Determine how a low-latency implementation would fit into Wine and how relative mouse events should be handled. Done means a validated input path with latency and precision comparable to the reported evdev results.

Written by the indexing model from the issue text.

Assessment

Tech stack
c
Domain
operating-systems
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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