libretro / libretro/RetroArch

[Steam Deck] Vertical lines in Turok: Rage Wars on Mupen64

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Description

Description

When using the widescreen hack in the Mupen64Plus core, Turok Rage Wars (EU) has vertical lines present on the screen. These lines aren't present when playing on Windows 10 (but are present when forcing Steam on the Steam Deck to use the Windows build by forcing the use of Proton)

Expected behavior

The Steam Deck to display the same as on Windows

Actual behavior

Turok - Rage Wars (USA) (Rev 1)-231029-153252

Steps to reproduce the bug
  1. On a Steam Deck, run Turok Rage Wars (EU) on Mupen64Plus with the widescreen hack option on.
Bisect Results

This has happened since at least 1.14.0

Version/Commit

You can find thisfile:///home/deck/.local/share/Steam/steamapps/common/RetroArch/screenshots/Turok - Rage Wars (USA) (Rev 1)-231029-153252.png information under Information/System Information

  • RetroArch: 1.16.0
Environment information
  • OS: Steam deck linux
  • Compiler: [In case you are running local builds]

Contributor guide

Open the contributing guide

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 reproducing Turok: Rage Wars (EU) on Steam Deck Linux with the Mupen64Plus core and widescreen hack enabled. Compare the rendering with the Windows 10 result described in the issue. Done means the Steam Deck display no longer shows the vertical lines and matches the expected Windows output.

Written by the indexing model from the issue text.

Assessment

Tech stack
linux
Domain
computer-graphics, operating-systems
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
32/100

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