Stray (PPSA02100) on Linux

[fisherjoey]

Tested

• Title: Stray, PPSA02100 v1.05, Unreal Engine 4. Relinked with its own sce_module (libc, libSceFace, libSceFaceTracker, libSceJobManager, libSceNpCppWebApi, libScePfs). Fresh save data.
• Host: Nobara Linux 44 (kernel 7.2), Ryzen 5 7600X, RTX 5070 Ti (NVIDIA 595.91.07), 32 GB, GCC 16 Release build.
• Last update: 2026-10-09

Status

main only (8b393b6): it stops 9 s after launch, after the Vulkan device and shader disk cache come up and before any window opens, with computed/data-dependent s_swappc_b64 call target at program counter 0x00000074 is not statically resolvable (#1817).

main + the PRs below: it boots to the first-boot brightness calibration screen ("Adjust the value until the image on the left disappears..."), which renders correctly and holds 57 to 58 fps. Two 10-minute runs had no crash (about 20,000 frames each). I didn't send input, so nothing past that screen was tested. Shader registration takes most of the first 3.5 minutes before the window appears.

How to run it

There's no public branch yet. Apply these to main 8b393b6 in this order: #1836, #2282, #2141, #1893, #1904 with #1934, #1902, #1928, #1837, #425, #2076, #1077, then the PA_CL_VS_OUT_CNTL preparation change (see F below). Several of these conflict with each other (see the open issues), and I resolved the conflicts locally.

Performance

	Today, main only	Today, main + the PRs below
Furthest point	stops at 9 s, no window	brightness calibration screen (first boot)
fps	none	57-58, steady for 10 min

Open issues

	Issue	Status
A	Compute shaders that call through a computed s_swappc_b64 target (#1817)	Deferred by #1836
B	Image heap capacity (#1789): the storage heap of 4 and the 16 sampler pairs both overflow	#2282 + #2141. #2347 (32 sampled) alone isn't enough, and #2282 conflicts with both #2347 and #2141 in RuntimeAbi.hpp
C	Packed pixel ancillary (#1903, #1933)	Needs both #1904 and #1934, which conflict in ConstantFolder.cpp. That's on us; we'll post a combined version
D	#1902 and #1836 conflict in ShaderRegistry.cpp	Resolved locally as deferred || PreparedAtUse(...)
E	Layered draws into array color views (#2102)	#1077, which currently conflicts with main
F	Graphics stages prepared without the draw's PA_CL_VS_OUT_CNTL (missing artifact for stage 7)	#2290 does this, but it carries a different #423 than #1077 and the two conflict in 12 files. I used our local equivalent on top of #1077
G	Past the brightness screen	Not tested yet (needs input)

Pull requests

Everything the title needs on top of main:

Shader preparation:

• fix(agc): defer shaders that cannot be prepared at registration to their first use #1836 defer shaders that cannot be prepared at registration (Ghost of Yōtei: compute shader calls a user-data function pointer with s_swappc_b64 (not statically resolvable) #1817)
• fix(agc): skip registration-time preparation for unsupported shader types #1893 skip registration-time preparation for unsupported shader types (Registering a shader of type 8 aborts the title: "AGC driver: unsupported registered shader type" #1892)
• fix(agc): prepare the null pixel program at draw when its variant was not prepared #1902 prepare the null pixel program at draw (Draw with no pixel program fails: "prepared shader artifact is missing for the requested static ABI" (null pixel program) #1901); fix(agc): prepare a rect-list draw's missing rectangle at draw from its prepared stages #1928 its rect-list rectangles (Rect-list draw aborts with "prepared rectangle artifacts are missing" when its pixel variant was prepared at draw #1927)
• fix(agc): accept bound copies of a registered shader header that differ only in user_data #1837 bound copies of a registered shader header

Shaders:

• fix(recompiler): size a typed storage heap for several images, not one dynamic image #2282 size a typed storage heap for several images, and fix(shader): reserve heap space for sixteen sampler pairs #2141 room for sixteen sampler pairs (Sampled image heap of 16 rejects a retail shader before the metadata limit #1789)
• fix(shader): lower the packed pixel ancillary when its extract operands fold after it #1904 and fix(shader): carry a packed pixel ancillary through phis when every reader extracts a modelled field #1934 the packed pixel ancillary (Recompiler: "packed pixel ancillary input has an unsupported live use" for a plain v_bfe_u32 of the render target index #1903, Recompiler: packed pixel ancillary rejected when the shader reuses its VGPR ("unsupported live use") #1933)

Rendering and memory:

• feat(agc): depth surfaces read as textures and storage images #425 depth surfaces read as textures and storage images (AGC: storage image access to depth/stencil surface 0x201a800000 is not implemented #1409)
• feat(agc): storage images over a depth surface's stencil plane #2076 storage images over a depth surface's stencil plane
• feat(agc): render layered draws into 3D color targets #1077 layered draws into 3D color targets (Layered rendering: a draw into all slices of a 3D color target aborts with "color views of several array slices are unsupported" #2102), plus PA_CL_VS_OUT_CNTL in graphics preparation (fix(agc): preserve clip control during preparation #2290, see F)

AI-assisted: yes