Enable the existing input-only f32 flush policy for division scaling.
RDNA2 measurements pin all three sources and signed zeros; keep the
scaling rules unchanged and retain their separate technical debt.
Co-Authored-By: Codex gpt-6.1-sol <[email protected]>
Resolves a guest path the way FreeBSD 11's realpath does: a relative
path starts from the guest working directory, "." and empty components
are skipped, ".." drops the last component and never climbs above "/",
every other component must exist, and one that is not a directory with
anything after it is ENOTDIR. Backslashes separate components as in the
rest of the path layer. The result is the guest path; the host is
consulted only for existence and type, so host symlinks are followed but
not expanded, and ".." is lexical, as in the rest of the path layer. A
null buffer is PATH_MAX bytes from the application heap, a null path is
EINVAL, an empty one ENOENT, and 1024 bytes or more in the input or the
result is ENAMETOOLONG. On failure the caller's buffer holds the path
that failed.
Co-Authored-By: Claude Fable 5.1 <[email protected]>
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01Fnrk5Dazjb2tLooVSpdRQq
Keep each registered header and its prepared shader state instead of
replacing every registration for the same code address. Resolve explicit
ABIs by header and programs by type, preserving re-registration order.
Co-Authored-By: GPT-6.1-Sol <[email protected]>
The detached alarm thread waits on a condition variable that was a
namespace-scope static. At exit its destructor ran with the thread still
waiting, and glibc's pthread_cond_destroy blocks then, so a process that
called alarm never exited on Linux. The mutex, condition variable, deadline
and started flag now live in one structure allocated once and never
destroyed.
AI-assisted (Claude Code).
Co-Authored-By: Claude Opus 5.5 <[email protected]>
A host import covered exactly one registered range, so a buffer crossing
two ranges had no import and was copied on the CPU at every use, under
the GPU mutex. Titles that map a GPU heap piece by piece (Uncharted maps
1 MiB direct-memory pieces) hit this for every buffer larger than a
piece.
An import now covers the run of address-adjacent registered ranges that
are readable with the same write and GPU access. Runs never overlap, so
imports do not either; an import is retired when any range of its run
changes, and a refused run is remembered by its base. Callers already
address imports relative to their base.
sceFontSetScriptLanguage, sceFontGetScriptLanguage,
sceFontSetTypographicDesign and sceFontGetTypographicDesign threw. With
the signatures SharpProspero declares, a font handle now keeps the
language set for each script and the feature set for each typographic
design, under the handle's lock, and returns them, with 0 for one never
set. They do not change shaping or rendering yet; TechnicalDebt records
the assumptions.
Claude-Session: https://claude.ai/code/session_012SLQbhAiexxW6TtjYToW8a
(cherry picked from commit c4dcbe4403dc635fde2a823dec311a939816cefc)
RetroArch (PPSA99169) stops at alarm on main: `FAIL: unresolved ELF import DQXJraCc1rA from libSceLibcInternal.prx`.
alarm(seconds) arms one process-wide real-time alarm and returns the seconds left on the previous one, rounded up like FreeBSD's alarm.c (any partial second counts); alarm(0) cancels it. When it expires, SIGALRM's disposition as recorded by sigaction or signal applies: ignored, nothing happens; default, the process terminates as on FreeBSD (exit status 128 + 14); a guest handler throws, because asynchronous delivery to a guest handler is not implemented.
The timer lives in libkernel next to the signal dispositions (GuestAlarm_nid_no_patch); libSceLibcInternal, which the titles import alarm from, forwards to it.
AI-assisted (Claude Code).
Co-Authored-By: Claude Opus 5.5 <[email protected]>
libSceCdlgG2P and libSceVrSetupDialog threw from every export. They now
run the common-dialog state machine libSceLoginDialog uses: Initialize,
Open, the status calls, GetResult, Close and Terminate follow it, the
dialog finishes at Open without showing anything, and GetResult reports
that the user cancelled, writing only the leading int32 result. The
signatures are assumed from the other common dialogs, as TechnicalDebt
records. 13 exports move from stubs to implemented.
Claude-Session: https://claude.ai/code/session_012SLQbhAiexxW6TtjYToW8a
(cherry picked from commit 07992adf80bae9b2d7da4b751cd21c040fa1c5b8)
A flat_atomic_* whose address lands in the LDS aperture updated the dword without the lock, so it could lose updates against a ds_add_u64 or a 64-bit flat atomic on the same dwords. It takes the lock like the 32-bit ds atomics when the program has a 64-bit LDS atomic; programs without one emit the same SPIR-V as before.
On RADV the race between ds_add_u64 under the workgroup lock and a
concurrent ds_add_u32 only shows when the lanes get their operands from
per-lane buffer loads: with v_mov_b32 constants or loads from one address
no increment is lost there. The new case has the split-lane kernel's
parity split and loads each lane's (0xffffffff, 0, 1, 0) row from the input
buffer at tid * 16 with buffer_load_dwordx4, so the input buffer now holds
256 rows. With SpirvMemoryInstructions.cpp reverted it fails on RADV and
on the RTX 3080; with the change it passes on both.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01Fnrk5Dazjb2tLooVSpdRQq
Even lanes run ds_add_u64 and odd lanes run ds_add_u32 on the slot's high
dword, one pass per dispatch, as in the reported kernel, and the dispatch
is repeated 32 times from one compiled shader.
With ANYPS5_ENABLE_SPIRV_TOOLS=ON the scalar loop around the ds_add_u64 lock loop made
SPIRV-Tools' block merge pass merge the loop header with its multi-block continue
target, and validation after optimization rejected the module. The 16 iterations are
now emitted inline; the expected sums and the divergent exec masks are unchanged.
The hardware serialises 32-bit and 64-bit LDS atomics on one address; the lock that makes the 64-bit forms atomic did not order 32-bit atomics, which lost increments between the two halves of a 64-bit update (#2297).
GuestMemory::WriteChanged stores only the bytes the GPU changed, so that CPU writes to the bytes
around them survive. It found them a byte at a time inside every changed 256-byte block and
stored each run with memcpy. Where changed and unchanged bytes interleave (the low bytes of
floats), every run is a few bytes long, and that loop took 43% of the GPU submission thread in
Disney Epic Mickey: Rebrushed's first level (0.9-1.0 ms per MiB).
Each 16-byte chunk is now compared with SSE2. A chunk with no change is skipped, a chunk that
changed entirely is stored whole, and a mixed one is stored with MASKMOVDQU, which writes only the
bytes selected by the mask. An SFENCE after the loop orders those non-temporal stores before the
stores that follow. Bytes the GPU did not change are still never written.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_0134RWCyiyydJBbfKz8g9Bwe
AddWaveformBlocks rejects a null data pointer before reaching the silence
path, so TestSilenceBlock aborted and its dataless rejection passed for the
wrong reason.
PPSA11386 registers 3840x2160 tiled display buffers in pixel format
0xC001000622000000, R16G16B16A16 float in KytyPS5 and SharpProspero
(0xC001000600000000 is the blue-first variant), and stops on "VideoOut:
unsupported display pixel format". The buffer is eight bytes per texel; its
tiled layout is assumed to be the 8-byte SW_64KB_R_X equation applied to
full coordinates, as addrlib applies it. The values are taken as linear
light and encoded with the sRGB curve for the 8-bit output. The encoding
compares the raw half-float bits against two tables of 255 thresholds
(color and alpha) that the CPU decode and the color transfer shader share,
so both give the same bytes on any driver; negative and NaN values give 0.
Guest-memory detile, the resident image path and the CPU decode all handle
both formats; DCC metadata on a float buffer throws. Neither the layout nor
the transfer is verified against console frames.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01Fnrk5Dazjb2tLooVSpdRQq
A waveform block that declares samples with no data threw as not
fitting them. PPSA04867 adds such a block with flags 0x11 (data_size 0,
num_samples 16385) and terminates the process on the throw, followed by
a fully specified block under the same flags, which takes the ordinary
path. Accept flag 0x10, named SILENCE here: a dataless block under it
renders num_samples frames of silence and finishes like a complete
block, reporting its bytes through decoded_data_size. A dataless block
without the flag keeps throwing. No public reference names the flag;
the assumption is recorded in TechnicalDebt.
Co-Authored-By: Claude Code <[email protected]>
