libretro / libretro/RetroArch

1.18.0 changing "sync to exact content ramerate" ON/OFF causes the screen to flicker for a moment

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C
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Description

I'm not sure if this is an issue or the expected behavior.

In any previous RetroArch version, changing this to ON/OFF while in the menu was just like any other toggle and didn't cause the frontend to flicker (Turing the screen OFF for half a second).

Doing the same action while in-game using the hotkey doesn't cause the screen to flicker though.

So something changed but i can't tell if it's for the best or there's a bug. The feature works fine otherwise, the games run smoothly on my 240hz screen. The only issue now really is that now looks more janky when you fiddle with the ON/OFF switch.

Contributor guide

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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 reproducing the flicker when changing “sync to exact content framerate” from the menu, then compare it with changing the same setting through the in-game hotkey. Trace the frontend’s handling of this toggle and determine whether the menu path unnecessarily turns the display off. Done means the setting still works while the menu toggle no longer causes the reported half-second flicker.

Written by the indexing model from the issue text.

Assessment

Tech stack
c
Domain
frontend
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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