The export turned YNw9Xk5iNWo from an unresolved import into a stub that throws. Dreaming Sarah (PPSA02929) calls it during start-up and now aborts with "YNw9Xk5iNWo not implemented" about 2 s in. Reverting until the function is implemented.
Titles run natively, so a host CPU without an extension that compiled Zen 2 code uses faults with an illegal instruction deep inside a title (#3719: SHLX, BMI2). libkernel now reads CPUID and XCR0 when it loads on Linux and Windows, logs the host CPU's extensions and throws, naming the CPU and the missing extensions, before any title code runs.
select now checks pipe descriptors on Windows with the readiness test poll
already uses, so a pipe next to a libSceNet socket no longer throws.
RetroArch (PPSA99169) selects on libmicrohttpd's wake-up pipe beside its
listening socket. guest_select now runs on Windows too.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
On Windows every direct host import leaves the write watch, and a storage
image over it compares its whole surface with its guest-byte copy at every
collect epoch. #4432 measured 7-8.6 s of every 10 s in those compares on a
GTA V scene, with 98% of the compared surfaces unchanged.
Tracker blocks that leave the watch now keep their write-watch marks as a
hint. Leaving the watch gives a block a fresh hint stamp, and
UntrackedHint walks a range of such blocks, at most once per collect epoch
and thread, stamping the blocks whose pages a CPU store marked; it
returns the newest stamp of the range. compareUntracked puts that stamp in
its memo key in place of the collect epoch, so an image is compared again
after a mark in its range, a driver store, a mapping change or a recorded
GPU write. The byte compare still decides whether anything changed: a mark
the driver makes without a CPU store costs one compare and drops nothing.
Nothing else reads the hint. Collects, Watched, UnchangedSince,
ChangedBlocks and NewestStamp still treat those blocks as untracked, and
Linux is unchanged.
agc_driver_dcc_keys_first_write refreshes an imported storage image over
50 collect epochs with no store: it compared the image 50 times before and
0 times now. A CPU store is still uploaded on the next refresh, and a store
of the bytes already there costs one compare and keeps the pending
results. agc_write_tracking checks the hint itself.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Build SDL's Wayland backend next to X11 and ask SDL for "wayland,x11"
on Linux, so the window runs natively under a Wayland compositor instead
of through XWayland. SDL loads libwayland, xkbcommon and libdecor at run
time, so systems without them, or sessions without WAYLAND_DISPLAY, keep
using X11. SDL_VIDEODRIVER still overrides the choice.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A shared range larger than one chunk now takes the sparse path only when
the device binds sparse memory, udmabuf is open, the range's backing
offset is on the sparse block size, the sparse buffer accepts every
memory type a chunk import can have and the backing file covers the
last chunk. All of that is known before a chunk is imported. Once the
path is chosen, a failed chunk import, fence creation, bind, fence wait or device
address throws instead of going on to the whole-range udmabuf and copies.
agc_host_import_sparse checks the import against a mocked device with
the real udmabuf: a range above size_limit_mb becomes one sparse buffer
bound to one chunk import per 64 MiB, an unaligned backing offset
imports no chunk, and failures of UDMABUF_CREATE and vkQueueBindSparse
after the decision throw.
A draw made outside the GPU lock (agc_driver_recorded_kept_bytes) imports a target's memory and leaves the watch there; the hook threw instead of saving. It now takes the lock, as FlushPending does.
radeonsi exports MRT0 as 32_AR when alpha-to-coverage is on and no color
buffer is bound, so a depth-only draw can depend on that alpha. The
decoder now accepts 32_AR and an absent MRT0 target, and reads the MRT0
export format from SPI_SHADER_COL_FORMAT, which it masked to 0 for
draws without a color target.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A pixel export to an MRT whose SPI_SHADER_COL_FORMAT is 32_AR read its
alpha from export channel 3 (EN mask 0x9), the layout before GFX10. On
GFX10, which the PS5's gfx1013 is, the alpha is channel 1: Mesa's
emit_ps_color_export (ac_nir_lower_ps_late.c, index
gfx_level >= GFX10 ? 1 : 3), ACO and radeonsi in Mesa 22.0
(enabled_channels 0x3 with the alpha in channel 1) and LLPC's
FragmentColorExport.cpp (EXP_FORMAT_32_AR, exports[1]) all emit it
there. A console shader's `exp mrt0 v0, v1, off, off` therefore lost
its alpha: it stayed at the 1.0 default, so an alpha-only COLOR_32
ALT_REV target stored 1.0 and an R32 target blended with SRC_ALPHA
blended as if the alpha were 1. With channel 3 enabled, channel 3 was
taken instead.
ExportVector now reads channels 0 and 1 for 32_AR and puts channel 1
in the alpha component; channels 2 and 3 are ignored. The layout comes
from the compilers, not from a hardware measurement, and is recorded in
docs/dev/debt/shader.md.
agc_driver_pixel32_ar_export draws 32_AR exports with EN 0x3, 0xb and
0xf, as wave32 and wave64, into a COLOR_32 FLOAT ALT_REV target and a
COLOR_32 FLOAT target blended with SRC_ALPHA and ONE_MINUS_SRC_ALPHA,
and compares every stored value bit for bit. Without the fix every row
fails: the stored value uses an alpha of 1.0 or of channel 3.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
On Linux a shared-backed guest range is imported through one udmabuf
covering the whole range, and udmabuf refuses buffers above its
size_limit_mb (64 MiB by default). Larger ranges fell back to copies; an
address-based dispatch then synced its whole mirror, storing back every
pending storage image inside it each time.
Such a range is now one sparse buffer bound to the existing 64 MiB chunk
imports. The bind runs on a sparse binding queue of its own when the
device has one, so imports made at map time (without the GPU mutex) can
use it; otherwise only under the GPU mutex on the main queue.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
On Windows, singly mapped direct memory is private since #5596, so its host
import is a direct import that leaves the write watch instead of a shared
alias that stays watched. A storage image whose results were pending when
its memory was imported had no saved guest bytes, and storing them threw.
GuestMemory now calls a hook before Unwatch and before an ImportWatched
that does not stay watched. Every image with results pending over the
range saves the guest bytes of its pending units that have none, then
collects and records the pieces the keep rule leaves to the CPU for the
writes the watch saw. The next store and Refresh leave those pieces to the
CPU and compare the rest with the saved bytes. A map-time import made
without the GPU lock is deferred to the locked retry when pending results
overlap the range.
Dean