libretro / libretro/RetroArch

[NGC] off-boundaries display with default video settings when booted off 50Hz

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platform: wii/ngc
Dominant language
C
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Description

Description

When launched from SWISS with 50Hz video mode (576i/p), the display gets off screen at the bottom.

Expected behavior

Just as in 60Hz, display must not take place off active video area.

Actual behavior

The video has to be set to 640x480 to get back to "normal" (no option for 576 lines though?…)

Steps to reproduce the bug
  1. Run SWISS on a GameCube with whatever method.
  2. Check for SWISS's 50Hz video mode, or set it and reset SWISS to apply.
  3. Choose any core in the retroarch folder and launch it.
Bisect Results

Version 1.0.0.2 to 11/26/21 nightly affected, didn't try former releases.

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

Reproduce the issue on a GameCube using SWISS in 50Hz video mode, then launch a core from the retroarch folder and compare the display with 60Hz. Trace the GameCube video-mode handling and identify why the active video area is exceeded at the default 576i/p settings. Done means 50Hz output remains fully visible without requiring 640x480.

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
Mostly clear
Newbie friendliness
35/100

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