libretro / libretro/ps2

[PARALLEL-GS]: Accuracy bugs in games

Open
#12 166 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

Dominant language
C++
Stars
85
Forks
26
Avg merge
6h 43m
Merged PRs (30d)
6

Description

Games with graphical issues remaining:
** Games with issues remaining:**
Games with SSAA bugs remaining:
Intel iGPU (HD 770) Bugs

UPDATE: Bug is gone, it's just not fullspeed and probably will never be due to bad compute performance.

Games that are unplayably slow with parallel-GS - sub-fullspeed -

Tested on i9 13900k + RTX 4090:
Tested on Ryzen 7 9800X3D + RTX 5090:

  • 007 From Russia With Love (3)
  • Area 51 (2)
  • Call of Duty 2: Big Red One
  • Call of Duty 3
  • Driv3r (1)
  • Driver: Parallel Lines
  • Hitman Blood Money
  • Hitman Contracts (2)
  • Mercenaries - Playground of Destruction/Mercenaries 2 (2)
  • Need For Speed Carbon (1)
  • Pilot Down - Behind Enemy Lines
  • Steambot Chronicles (5)
  • Stolen (1)

LEGEND:

  1. Software renderer is just as slow.
  2. Software renderer is faster.
  3. Slows down to a crawl in the opening level. Starts off running fine at like 100+fps on a 4090 then slows down randomly and suddenly to like the teens.
  4. Massive slowdown in one of the menu screens before the start of a game
  5. Performance is especially brutal in Tutorial mode
Games that are very expensive with parallel-GS and SSAA

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

No source file, test, or entry point is named. Start by reproducing one of the listed graphical or performance problems with parallel-GS, then identify the relevant emulator subsystem; done would require fixing and verifying the selected game's issue.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
game-dev, performance
Issue type
Bug
Difficulty
5/5
Estimated time
Over a week
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
25/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.