libSceSystemService reads the variable when it prepares a launch, and an
empty value counts as unset; GuestSystemExit.cpp only checks that it is
not defined.
FrameRecorder reads the variable with a fallback of 0 and raises it to 1
when it picks the boundary, so the effect of the default is the same as
1 but the default is 0; a value that is not a number throws.
HostVolumes records ReadOnly from the mount options (or the Windows
read-only volume flag) and the export reports it, so passthrough is not
always writable.
APS5_NO_PERF_FRONTEND_PAIR and APS5_NO_PERF_LAYOUT_PAIR are read by the
shader recompiler itself, which the shader disk cache lists among its
output-neutral switches, not only by the shader-memory test the rows
pointed at.
TextureFormat.cpp compares the value with "1" and "copy" and ignores
anything else, so setting it to an arbitrary value does not behave like
a presence switch.
StoreAtLabelRequested returns true for "1" and throws for any other
value (expected 1), like its sibling APS5_STORE_AT_FLIP, so it is not a
presence switch.
_submit executes inline only when the queue is neither running nor holding
pending work; otherwise it enqueues a copy and returns the id, so the
statement that buffers without a wait always complete first was wrong.
TechnicalDebt.md only links back to this section; the list of calls that
act on a cancellation request and the note on the asynchronous type are
the Thread cancellation entry of debt/libkernel.md.
The table said Aps5StartGuest had no implementation on main, but
MainThreadMacOs.cpp defines it and libkernel's CMakeLists builds it. It
starts the guest on a second pthread (at least 8 MiB of stack) as
entry(block, nullptr) while the main thread runs the CFRunLoop, and it
aborts if the entry returns.
The directory limits (128 records, 256 MiB) throw CaptureLimit, which
WriteOptional catches: capture disables itself with one stderr line and
the pipeline is still created. Only the per-record 36 MiB limit throws
out of the capture, so the old sentence described both as an error.
TraceThread::Slice holds five eight-byte members (scope, stage, begin,
length and the recorder batch), so an event takes 40 bytes, not 32.
The example sizes follow: 10 MiB at the default 262,144 events, 120 MiB
at 3,145,728 and 160 MiB at the 4,194,304 maximum.
Main took request serialization version 48 for the fragment barycentric
built-ins flag (#9193). The depth export clamp bounds are now written at
version 49 and read only for versions from 49, so a version 48 request as main
writes it still decodes, with default bounds. Tests: version 49 is the
emitted prefix, 50 the first unsupported one, a depth exporting request
without its bounds decodes at 48, 47 and 46 (the last two without main's
barycentric byte), and a version 48 two-sample dithered request decodes as
written.
scePthreadMutexattrSetkind called NotImplemented_nid_no_patch for a kind
outside 1 to 4. Firmware 13.42's libkernel, run in an emulator, makes it
call pthread_mutexattr_setkind_np, which stores any kind as a signed
16-bit value and returns 0, and turns a null attribute's -1 with errno 22
into 0x8001FFFF. It now forwards to pthread_mutexattr_setkind_np and
converts the result with sceKernelError, so a null attribute or object
still returns 0x8001FFFF and now also sets errno 22.
An out-of-range kind is refused by scePthreadMutexInit with 0x80020016,
leaving the mutex untouched, as measured for the same module.
scePthreadMutexattrGetkind is unchanged; kind 0 now reaches it and
returns 0.
The libc.prx that titles ship evaluates the rational step as
((Q(z) + g*P(z)) + 1) / ((Q(z) - g*P(z)) + 1), with its own ln 2 split
and coefficients in the double case, and returns 1 only for arguments
within half an epsilon of zero. main used a different rational form
with a doubling step and an epsilon-wide shortcut, which left about one
result in five one ulp away from titles.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
sceNpMatching2SignalingGetConnectionStatus reports every member inactive
for a known context, since no room is joined offline, and leaves the peer
address and port untouched; a null status pointer throws.
sceNpMatching2AbortContextStart returns NOT_INITIALIZED before
initialization and 0 afterwards. Checks follow shadPS4, with RPCS3's
differences recorded in the technical debt entry.
MarcZX10