GT4Recomp 1.2.4

RetroAchievements for Gran Turismo 4 USA v2.00, contributed by JulioHeroZ.

Install or update

Run GT4Recomp-Setup-1.2.4.exe, or accept the stable launcher update.
If you installed the private 1.2.4-rc1 candidate, install this final version manually; the legacy updater uses the same numeric version for both.
Existing game files, settings, controls, saves and replays are preserved by the existing installer/update flow.
You still need your own supported Gran Turismo 4 USA v2.00 disc image and the GSdx renderer.
This release uses the 1.2.3 single-game launcher and installer layout. The multi-game launcher, Spec II,
language switching and the separate portable edition remain on the 1.3.0 branch.

Settings > Achievements: sign in to RetroAchievements, see account scores and Gran Turismo 4 achievement progress.
In-game notifications: the native client evaluates achievement conditions once per guest VBlank and displays
account/game banners, unlock notifications, achievement progress, challenge indicators and leaderboard trackers.
Session options: enable or disable the integration, choose Hardcore mode, and use Encore mode to see already
earned achievements trigger again. Options are applied to the next game session.
The launcher stores the username and session token locally; it does not store the account password.

A status request finishing after sign-out cannot restore the old credentials or overwrite newer session options.
The Achievements page ignores stale responses after later actions or page navigation.
Closing the game cancels an outstanding achievement HTTP request before joining its worker thread.
Native achievement fixtures are registered in CTest, including a slow-loopback cancellation/restart test.
Development UI checks cover the new tab, account states, options, sign-out and a delayed response after sign-out.

RetroAchievements integration in this release targets GT4 USA v2.00 only. Spec II is unsupported here and must
remain disabled for RetroAchievements when this work is later integrated into 1.3.0, until separately validated.
Internet access and a RetroAchievements account are needed for online account and achievement services.
The interface remains English-only in 1.2.4 by owner decision on 2026-10-25; short release notes exist in both
English and Brazilian Portuguese. This legacy launcher does not have the 1.3.0 embedded release-notes panel.
Existing 1.2.3 known issues remain. No performance improvement or new renderer is claimed by this release.
Automated fixtures do not replace validation of real login, unlock submission and visible notifications in gameplay.

Thanks to JulioHeroZ (Julio Vitor Rufino) for the original launcher and native RetroAchievements implementation,
PR #96. The original commit and authorship are preserved.
Uses the MIT-licensed rcheevos library at
bbc79b58a5a2a0b98dfbf2be6ca9e42c764661ce. Its full license ships in game/licenses/LICENSE-rcheevos.txt.
GT4Recomp code is MIT. GSdx remains in its separate GPL process; no GPL implementation is linked into the game.
Gran Turismo and related game content belong to their respective owners. No disc image or game assets are distributed.