Systems / PlayStation 4

GravityRush-Reshifted

Gravity Rush Remastered (2015, x64)

Status

In game

Platforms

Linux x86-64 and macOS (planned)

Game release

CUSA01130, version 01.00 (decrypted dump of your own copy)

Repository

JTM-rootstorm/GravityRush-Reshifted

SwARc

platforms/orbis (commits)

Updated

2026-11-10

The first game on SwARc’s PS4 platform module, Orbis, and the test case it is being built against. It builds against SwARc’s main branch.

Status

• The executable plus its bundled libc and libSceFios2 lift (40,881 functions, 3.75M instructions) with nothing unimplemented, through SwARc’s lift script, which also lifts the game’s other shipped PRXs. It starts through the platform’s generic PS4 main(); the lifted code builds into a module beside a small executable.
• Start-up runs through libc and Fios2 into the game’s own: direct memory, job threads and fibers, PlayGo and disc-map reads, VideoOut (three 1080p display buffers, flips at 60 Hz), PSN (signed out), networking, save data, fonts, the pad and trophies. The values the HLE reports were measured on a console, in this game’s process, except a few (the user’s name, handle values, part of the flip data, two PlayGo replies).
• Runs go through the title, New Game, the opening movie and the first dialogue scene into free play in episode 1’s city, and keep running (18 minutes without a fatal error). Background runs are driven by timed pad presses and held sticks.
• Saves: a run plays the first mission (Kat’s walk to the old man’s door) to the first autosave, and Continue loads it through the system’s save data dialog, which SwARc draws over the game.
• Sound through the NGS2 HLE: the game’s sampler voices, submixer, reverb and mastering racks, mixed at 48 kHz, with ATRAC9 voices decoded through ffmpeg.
• Fonts follow the console’s FreeType use: its 11 fonts, kerned from GPOS or kern as the console does.
• Picture: the GPU front end draws on SwARc’s graphics device. Every vertex, pixel, compute and geometry shader of the game translates. Kat, the cat and the other characters (skinned in geometry-shader draws, with outline fins) draw whole; shadow cascades, depth fast clears, the depth target’s stencil read as a texture, the sky’s banding and textures with all their levels are right.
• Frame rate: about 200 fps in free play; the zoom over the city, about 1700 draws a frame, went from about 5 to about 160 fps.

Fixed in SwARc on the way: polling loops that the compiler had dropped (now loaded with acquire atomics), SSE flush-to-zero, setjmp and longjmp in x64 images, and a geometry shader’s swizzled buffer addresses.

Known gaps

• The city’s sound has not been checked by ear (runs use a silent audio driver).
• Episode worlds cannot be booted directly (-world); they draw black without what the title’s New Game sets up.
• The GPU thread limits the frame rate in the zoom.
• Where Continue puts Kat, the city draws no shadows. The area’s own lighting turns them off there, so it looks like the game rather than the platform; that is still to be confirmed on the console.

Next

• The GPU thread’s cost per draw.
• Playing on from the autosave into the rest of episode 1.

The findings have the detail.