Comparison sampling of a color texture required the view's X channel to select red. A title runs image_sample_c_lz on a 1x1 R8 unorm placeholder whose dst_sel is constant 0 on all four channels.
On hardware the compare result is placed in every channel and each returned channel then applies its own dst_sel: 0 gives 0, 1 gives 1, R/G/B/A give the compare result. Return each dmask register from its own select, and throw only for the reserved selects 2 and 3.
On Windows every unwind step called VirtualQuery to find the frame's
module, and a module with a plain .eh_frame (libstdc++, libgcc, libwinpthread)
was searched by decoding each FDE in turn. A C++ exception crossing those
frames cost about a millisecond. Look the module up with RtlPcToFileHeader
first, falling back to VirtualQuery for images the loader does not know,
and binary-search a per-module index of FDE start addresses built on first
use.
A 1D sample or load of a 2D T# had no runtime image mode after the mode table landed, so it was still refused at materialization. Sampled 1D accesses now also accept a 2D view; the address completion in the emitter reads the missing row as 0.
Measured on hardware: a position component the instruction omits reads as 0, like an explicit 0, and the next VGPR is ignored. Missing array layers and derivative components are 0 too. Cube coordinates still need all components.
Multi-level views, and views starting above mip 0, are bound as their base
level only when every use of the image is image_sample_lz through an
unnormalized S# without minimum LOD or LOD bias, the case measured exact on
RDNA2. Selected-LOD, implicit-LOD and offset uses keep throwing.
The recompiler records selected-LOD uses (SamplerUseNonZeroLod) and proves
the case per image (imageUnnormalizedBaseLevel); the shader disk cache
format goes to 27.
Co-Authored-By: Claude <noreply@anthropic.com>
Vulkan only accepts unnormalized samplers on single-level views, while the
guest binds full mip chains and samples their base level. Bind a lazily
created one-level view of the descriptor's base mip instead of refusing
mipmapped views and views that start above mip 0.
Forwards _sceUltWaitingQueueResourcePoolCreate and _sceUltSemaphoreCreate to the existing calls, like the other underscore Ult exports. Declares sceNetShowIfconfig, sceNpWebApi2GetMemoryPoolStats, Json::Value::setNullAccessCallBack, kqueue, kevent and one pad call of unknown name without an implementation.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
normF32 took the error of p = |x| * scale from fma(|x|, scale, -p).
Vulkan only guarantees GLSL Fma on f32 the precision of a multiply
followed by an add, and lavapipe in Mesa 25.2.8 splits it, so the error
was 0 there and products that round to k + 0.5 were resolved by
roundEven: v_cvt_pknorm_u16_f32 of 0x37c000c0 gave 0x00020002 instead of
0x00010001.
scale + 1 is a power of two, so A = |x| * (scale + 1) is exact and the
product is A - |x|. Since A >= |x|, p = A - |x| and the error
(A - p) - |x| are computed with correctly rounded subtractions only
(Fast2Sum), which every driver gives exactly.
Map red and blue exports, write masks and constant-color blend factors together. Reject conflicting simultaneous target constants.
Semantics: Mesa 26.2.2 src/amd/common/ac_formats.c ac_translate_colorswap; console equivalence remains unverified. Graphics tests passed. Written with AI assistance.
v_min_f16, v_max_f16, v_min3_f16, v_max3_f16, v_med3_f16, v_pk_min_f16
and v_pk_max_f16 converted their sources to f32, ran the f32 min, max
or med3 with its NaN and signed-zero rules, and converted the result
back to f16 before applying the f16 NaN rules on the bits. The result
is always one of the sources, or for two zeros their sign bits
combined, so it is now chosen on the f16 bits: an integer comparison of
the bits with the sign folded into an ordering key, the same AND/OR
rule for two zeros, then the existing NaN, IEEE_MODE, denormal flush
and clamp rules.
The integer comparison doesn't depend on how the driver converts f16
denormals to f32. Comparing the f32 conversions instead fails on an
Intel UHD, whose UnpackHalf2x16 makes f16 denormals zero when the
module declares no f16 DenormPreserve, as these instructions no longer
convert to f16.
New test agc_driver_float16_min_max_bits checks the seven instructions
(VOP2 and VOP3 forms with abs, neg, op_sel and clamp; packed op_sel,
op_sel_hi and neg) on random and special inputs against a model of
those rules, in seven float modes including the f16 input denormal
flush. Current main gives the same results as the model on an RTX
4060, an Intel UHD and lavapipe.
Capture errno before the ENOTDIR lookup, translate EINVAL from a name
under a regular file to ENOTDIR, check the parent only once and strip a
trailing separator before taking it, and split the dense rmdir return.
On Windows mkdir_nid_postfix returned ENOENT and sceKernelMkdir and
sceKernelRmdir returned ENOENT or EIO when a regular file was used as a
directory in the path. FreeBSD mkdir(2) and rmdir(2) return ENOTDIR for
a path component that is not a directory.
Allocate cached sets without individual-free pools. Reset a pool after its
last owner releases it. Keep stable pool indices, skip full pools, and
terminate if reset fails. No GPU wait is added.
This avoids RADV 26.2.2's affected individual-free allocation path.
Validation: Fedora 44 Release graphics tests pass. The reset-failure
regression fails on the previous behavior and passes on this change.
llvmpipe and RX 6600 pass the 3,301-set lifecycle test with core and
synchronization validation. Windows was not tested.
AI-assisted: yes.
FreeBSD's kernel_sigaction rejects SIGKILL and SIGSTOP only for a handler other than SIG_DFL, so signal(9, SIG_DFL) and signal(17, SIG_DFL) succeed. Drop the SIG_ERR rejection, which has no kernel basis and which sigaction does not apply.
Add an optional input helper for test runs without desktop input injection. Preserve physical input and release injected buttons automatically.
Validation: guest_pad tests and Python helper CLI smoke checks passed. Written with AI assistance.
signal() returned SIG_ERR with EINVAL for any signal without a host
equivalent, such as SIGHUP, SIGPIPE and SIGUSR1, while sigaction()
accepted them. FreeBSD's signal() is sigaction() with SA_RESTART and fails
only for numbers outside 1..128 and for SIGKILL and SIGSTOP.
Drops the stale pending-dependency note (#553#683#684#685 are merged), adds the
package source and the Linux, extended-gameplay, save/load and audio results
reported in the thread, and replaces the cold-start note with the measured cause.
The UCRT diagnostic note is removed: no report on current main.
Co-Authored-By: Claude <noreply@anthropic.com>
Adrià Franch
Gjon Gojcevic
Adrià
Achraf Reyani
xXPBSXx
Karan Vora
TibixDev
Hussein Kadhim
Ethan Barr
Nicolas Abosch