OpenGTPS1 0.9b

OpenGTPS1 0.9b

OpenGTPS1 0.9b is the current Windows x64 release of the Gran Turismo 2
static-recompilation port.

INSTALLATION

The two GT2 images are required. The GT1 image is optional:

Simulation Disc
  Serial:  SCUS-94488
  Revision: 2
  IMG size: 691,850,208 bytes
  IMG SHA-256: D0AB6E70539601057590A36299543C0ADAD219254D712F7D4273219094ED5031

Arcade Disc
  Serial:  SCUS-94455
  IMG size: 729,423,408 bytes
  IMG SHA-256: C2E97D6B0C847CA4336D9D84D8D98C349D1240ED075E81AB3FD5C977E9A45075

Optional Gran Turismo content source
  Serial:  SCUS-94194
  IMG size: 693,668,304 bytes
  IMG SHA-256: 765A748C4F2975A063A47BA9E42708A4882954D765F9E352C5AF3C0950EAEFB6

Extract OpenGTPS1-0.9b-win-x64.zip and run OpenGTPS1-Setup.exe. Its
graphical first-run setup finds or asks for both GT2 images and offers the GT1
merge as an optional checkbox. Complete instructions are in the packaged
README.md. Once that completes, run GranTursimo2PC.exe to play.

The release contains no Gran Turismo game data, Sony BIOS, save files, or
music. Every selected source image is validated, read without modification,
and is not copied into or retained by the installed game.

Important

Please test this release and report problems through the
public issue tracker.
Search existing reports first, then use
New issue and attach
logs\OpenGTPS1-latest.log with your hardware and reproduction steps.

Where the game is now

• One executable boots the original GT2 opening and presents a unified title
  menu for the native US Arcade and Simulation programs.
• Gran Turismo Mode supports its original home map, dealers, garage, upgrades,
  licenses, events, championships, Results, and replay flow.
• Arcade Mode supports its native menus, classes, cars, courses, races,
  two-player flow, guest garage, Results, and replay flow.
• Memory cards load before the unified title. The complete native save payload,
  including credits, licenses, garage, current car, settings, and records, is
  preserved when entering Arcade Mode so Home Garage remains available.
• Authored menus, video, HUD, and transitions use GT2's original 2D command
  compositor. Race and replay worlds use one bundled D3D11 renderer with
  perspective-correct textures, stabilized authored topology, extended draw
  distance, maximum vehicle LOD, horizontal-plus widescreen, and roughly
  59.94/60 Hz presentation without synthetic frames.
• Sound effects, XA audio, external OGG music, keyboard input,
  Xbox-compatible controllers, configurable output presentation, bounded logs,
  and local mods are available.
• The archive is self-contained. Its single executable bundles the .NET
  runtime, native renderer, windowing, input, audio, and UI dependencies. Users
  do not need Python, a .NET installation, CMake, Visual Studio, or a
  PlayStation BIOS.

Major changes since 0.8beta

• Added the unified native Arcade/Simulation host and self-contained graphical
  setup for the exact supported discs. It searches common locations, accepts
  ordinary Browse selections, validates every source image, and installs
  without command-line tools.
• Restored the original Arcade-disc opening before the seamless unified title,
  while retaining native Start skipping and responsive first-menu input.
• Added direct native Arcade race/replay paths and deterministic bounded test
  harnesses.
• Replaced the selectable compatibility graphics paths with one fail-closed
  authored-world D3D11 path shared by development and release builds.
• Added genuine 59.94 Hz game/render timing, 60 FPS output, horizontal-plus
  widescreen, perspective-correct world textures, stabilized seams, extended
  visibility, maximum vehicle LOD, and bundled native rendering.
• Restored starting-grid visibility and retained stable authored vehicle
  reflections without the earlier flicker or fundamental reflection-style
  replacement.
• Fixed unified-title save loading and full-save transfer into Arcade Home
  Garage.
• Added GT1 conversion and validation for
  Special Stage Route 11, native cars, Racing Modification bodies, wheels,
  paints, and alternate-body liveries. The optional GUI setup path now creates
  and merges this content locally from the user's validated US GT1 image; the
  release does not distribute proprietary GT1 content.
• Added bounded release-policy, renderer, race, replay, save, audio, and package
  verification tools.

Known open issues

• The generated prize/LM development smoke-test save gives some cars incorrect
  wheel widths.
• At least the black JGTC Castrol Supra in that test save can revert to white
  when a race begins.
• Original-Xbox support remains future work.
• Hardware- and driver-specific graphical, input, audio, and performance
  problems may still exist outside the systems used during development.

The live list is the
OpenGTPS1 issue tracker.

What needs testing

• Fresh GUI installation from both exact supported GT2 images, with and
  without the optional supported GT1 image.
• First title-menu input and long controller/keyboard sessions.
• New and existing save creation, loading, updating, backup/restore, and Arcade
  Home Garage behavior.
• Complete races and replays across every course, including starting grids,
  vehicle reflections, flicker, texture seams, pop-in, wheel placement, and
  paint/livery persistence.
• Sustained performance on a broad range of GPUs and CPUs. Normal gameplay is
  intended to remain around 55–60 FPS; report repeatable material drops below
  that range.
• XA music, sound effects, external OGG playback, and unusual audio-device
  configurations.

Active development is entering a hiatus, so concise reproducible community
reports are the best way to preserve useful next steps.

OpenGTPS1 0.8beta

OpenGTPS1 0.8beta

This is the first public beta of the Windows x64 static-recompilation port.

Important

OpenGTPS1 0.8beta supports only the US Gran Turismo 2 Simulation Disc,
SCUS-94488, NTSC-U revision 2. The Arcade Disc, other regions, and earlier
US revisions are not supported.

The release contains no game data. The included setup utility validates and
extracts the required loose files from the user's own matching raw IMG.

Highlights

• Playable original game flow from boot through purchasing, upgrading, races,
  results, championships, and replays.
• Native Windows race/replay renderer with perspective-correct textures,
  exact track-seam handling, extended draw distance, maximum vehicle LOD, and
  configurable dithering.
• Keyboard and Xbox-compatible controller input.
• Memory-card persistence, sound effects, XA audio, external OGG music, mods,
  graphics presets, and structured logs.
• Bounded crash-hunt coverage across five World League tracks, multiple
  vehicles, purchases, upgrades, results, and replays with zero known
  legitimate unmapped calls remaining.

Known beta limitations

• Windows x64 only.
• Resolution and widescreen expansion are not complete.
• Some graphics and hardware-specific compatibility issues may remain.
• The executable is not code-signed, so Windows SmartScreen may warn.

See the README.md inside the ZIP for complete installation instructions,
controls, updating guidance, and troubleshooting.