Knowledge is Power: Decades (CUSA12435)

[ntamas94]

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Title

Knowledge is Power: Decades (CUSA12435)

Content version tested

01.00 (UP9000-CUSA12435_00-1810171605K2U1M0, own disc dump)

AnyPS5 commit

Get-fix ps4/limbo-gpu at 023803e (the PS4 stack: #9429, #9430, #9431, #9432, #9433 on main cecb540), plus the open PRs #9637 (Ajm batch buffers), #9671 to #9676, and local bring-up changes listed below.

System tested

Windows 11 Pro (10.0.26200), WinLibs GCC 15.2.0 r7, NVIDIA GeForce RTX 2080 (driver 617.14)

Furthest point

Menu

What is shown

Language select, controls hint, Wish Studios intro, the animated title screen, the tutorial ("Első lépések") and the lobby all render. PlayLink works: two phones joined through the official Android app, and a round was played through to the score screen. Audio: the Wwise AJM batches decode with #9637; with the batches skipped the title runs silent. Frame rate: 15 to 30 FPS in the intro, 4 to 6 FPS from the title screen on with APS5_STORE_AT_LABEL=1 (see blocker), 60 FPS peaks in the intro with a local flip-rate change.

Current blocker

1. Without APS5_STORE_AT_LABEL=1 the title faults in UnityGfxDeviceWorker about 30 to 60 s after start (libc.prx.guest.prx+0x36598, read of 0xffffffffffffffff): a lazy storage-image write-back lands over guest memory the title already reused as heap. A fix that holds CPU writes on pending ranges runs locally; it will be a separate PR.
2. The portrait / notification icons show coloured noise where the console shows the fallback icon: the PiP render targets read back through a compute shader hold stale fragments. Under investigation.
3. Per-draw driver CPU time (about 130 µs per draw, 230 to 330 draws per frame) caps the title at about 30 FPS on this machine. shadPS4 runs it faster on the same machine. Open PR fix(agc): keep hundreds of raw shader snapshots cached #10174 removes one cost behind this: the raw shader snapshot cache kept only 64 programs, so the unregistered PS4 shaders were prepared again each time they came round. Measured on the original Knowledge is Power (CUSA09558) menus: 383 programs, 341 136 preparations in 240 s before and 383 after, about 120 to 147 presents per 10 s. Not yet measured on this title.

Local changes not yet in a PR: sceNetGetSockInfo for kernel sockets with recv_queue_length (the PlayLink server polls it), the pad SPECIAL port as measured on a PS4, regular-file mmap on Windows, sceSystemServiceGetPlatformPrivacySetting, signed-out NP answers, and a PS4 discovery responder on the PC (UDP 987) so the phone app lists the PC.

How it was run

relinker --windows --registry --module-dir Media/Modules --module-dir Media/Plugins on the unwrapped eboot; APS5_STORE_AT_LABEL=1 APS5_PAD_INPUT_FILE=pad.txt ./kip.exe; a small Python script answers the PlayLink discovery broadcast on UDP 987 with the title's name and ID, the phones then connect to the title's own UDP 9066 server.