gpu-snoise-parity is Asura's FXC and Unity readback of snoise, not a GLSL run; phacelle's GLSL
evaluator is the cultmath-tapes follow-up glsl-browser-parity-run.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
GoldenFixtureMatchesCSharp draws arguments only under CULTMATH_WRITE_GLSL=1: the draw calls MathF.Pow,
whose bits differ by OS. Checking decodes each committed case's arguments and evaluates C# on them.
phacelle is compared across platforms within 2^-20 max(|v|, 1) per component; iv_exp keeps one ulp.
The iv_frustum_ball check gains the upper side r + d + 2^-19 (r + |c|_1) that NoiseBoundTests pins.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The parity section states the enclosure rule, restores that the evaluator concatenates
CultMath.Phacelle.glsl for the phacelle family, and names CultLib's browser-pane run
(follow-up gpu-snoise-parity) as that evaluator. The frustum-ball bound no longer assumes
a correctly rounded GLSL sqrt: proven for C# and HLSL, measured on GLSL.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
iv_frustum_ball's sqrt is not correctly rounded on WebGL2, so its family is ulp-bounded and
its entry carries the enclosure rule the consumer applies in double; GoldenFixtureMatchesCSharp
applies it to C#'s results too. A phacelle family (normalization 0.5, platform exp, sin, cos)
is appended after iv_exp; every earlier family's cases are byte-identical.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
EveryPublicFunctionIsLowered compares (name, parameter types) after the lowering's own
step 3, so a dropped overload such as cultmath_pcg3d(vec2) fails. TwoFileHeaderContract
pins distinct guards, the MIT and MPL-2.0 provenance labels, and the MIT file's pointer
to CultMath.Phacelle.glsl. GlslLowering exposes step 3 as LowerTypeNames; output unchanged.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
GlslLowering.SeparateFiles is the one name-keyed rule: CultMath.Phacelle.hlsl
lowers into shaders/CultMath.Phacelle.glsl (MPL-2.0, guard
CULTMATH_PHACELLE_GLSL) and its include line leaves CultMath.glsl, which is
now MIT and says so in its provenance line. ReadShaderSource takes an
include predicate (one resolver); the C# mirror still inlines everything.
GlslMirrorTests pins both files, checks tokens in each, takes the union of
definitions and asserts cultmath_phacelle( and CultPhasor live only in the
Phacelle file. The fixture appends cultmath_iv_frustum_ball (exact) and
cultmath_iv_exp ("ulp-bounded, platform exp", platform named); the
comparison is per family, the platform family within 1 ulp with the
maximum printed. THIRD-PARTY-NOTICES lists CultMath.Phacelle.glsl, not
CultMath.glsl, as MPL-2.0.
Regenerated on Yggdrasil (Ubuntu 24.04.5, .NET 10.0.12); 286/286 green,
iv_exp within 0 ulp.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Regeneration alone (CULTMATH_WRITE_GLSL=1) on Yggdrasil at 8be32a2e: the
lowering of r3's widened iv_frustum_ball, 15 lines. The fixture does not
change. Full suite 286/286 green.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
README conflict resolved by keeping r3's Intervals bullet, then the GLSL
bullet. design.md and HlslSourceCompatibilityTests.cs merged clean.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
MarchTile reports a body start where the gated bound over the rest of the
grid is a positive point and appends the rest unprobed; MarchLod takes one
closed-form Beer-Lambert step there. AnalyticBodyMatchesFineMarch pins it
against the ungated field and the fixed-step product, and pins that no
(a)-(d) tile reports a body. VoidField takes a focal length; LOD-far
(Rh 4000, S 50, f 467) joins the enclosure test, which now asserts it
sampled weights in (0, 1) and at 0. The void grid ends at Rc + 6/K. The
doc derives the one shipped void (198, 50) and records the [w(z1), 1]
deviation. (c) is held to 0.90 of its probe-free ceiling.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The radius gains (|c|_1 + radius) 2^-20 in C# and both HLSL copies; the
doc's strictness claim leaves. TileBallEnclosesEveryRaySegment measures in
double over the r2 domain and seven extreme families with outward corner
flows, pins the radius two-sided, and counts misses per family. The noise
ball enclosure tests draw radii to 1e3.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
design.md "Intervals" gains the frustum-ball paragraph and the envelope-then-noise
paragraph: how a consumer composes the bound, the short-circuit, and that the warp
lives on the noise only. r1's slab saving paragraph is replaced by r2's printed
numbers per scenario. README names iv_frustum_ball and the envelope composition.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
MarchTile runs the pre-pass once per tile on cell-index ranges. It starts from
the whole grid, skips and doubles on proof, halves on maybe, and runs to the
grid's end. Every ray of the tile integrates exactly the dense cells with the
dense march's Integrate. MarchLod is the void's footprint-aware march inside the
unmasked runs. IntervalSkipHalvesEvaluations prints (a)-(d) at N in {1, 4, 8, 16}
and warp in {0, D}, the void grid (Rh x camera offset x S), and the shipped point
with three marches. It asserts transmittance agreement and skips naming
saving-2x-scenarios when (a), (c) or (e) misses its 2x contract.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Deleted: SavingField's MarchIntervals (per-ray probes, the StepMax growth cap,
probes attempted where the ball could never prove emptiness), its unconditional
three-snoise sample, and the saving test that skipped naming r1's fork.
Added, test-side only: the scenario model. FogField is Aetheria's nebula over its
gravity-well height map (Volumetric.cginc, Zone.cs, Settings.asset cited by
line): (a) height fog, (b) inside the fog, (c) the zone bowl and four wells.
SlabField is r1's slab, kept as the worst case. VoidField is the shipped cavity
with footprint octave weights. Each composes one bound from existing iv_* ops:
the envelope over the tile slice's box, its fade, and the noise ball from
iv_frustum_ball enlarged by the warp. The pointwise density is envelope-gated.
EnvelopeBoundEnclosesDensity checks 2,000 slices x 64 warped points with no
tolerance.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
One new function in C# and both tracked HLSL copies (one blob): the centre on the
tile's central ray at mid-depth, radius ((z1 - z0) / 2) |(m_c, 1)| + z1 N / (sqrt(2) f)
+ warp. TileBallEnclosesEveryRaySegment checks 2,000 seeded tiles x 64 points
(sub-pixel corners at both depth ends with full-length flows) with no tolerance,
and pins the ball to the derivation so a grown ball fails too. The mirror's
compared-function count moves from 52 to 53.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
design.md gains "GLSL Target: Source Transformations" (the list, the common-subset rule, the
regeneration command, the derived-file rule, the two parity legs). README says how a WebGL
consumer includes CultMath.glsl. THIRD-PARTY-NOTICES lists CultMath.glsl as MPL-2.0, because
it inlines the Phacelle include.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
compile-glsl.ps1 writes the wrapper a WebGL2 consumer writes (#version 300 es, highp precision,
the library by concatenation, one call of every public function) and compiles it with glslang;
-Body replaces the calls, for the negative control.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
GlslLowering (test project) is the HLSL -> GLSL ES 3.00 transformation as named steps: includes
inlined by the C# mirror's own resolver, guards and texture functions dropped, type names,
static const, casts by a balanced scanner, intrinsic renames, literals passed through, the
CULTMATH_GLSL guard and a provenance line. GlslMirrorTests pins the committed file to the
lowering (CULTMATH_WRITE_GLSL=1 regenerates it), finds no HLSL-only token, finds every public
function but the texture samplers, and pins fixtures/glsl-parity.json (256 seeded cases per
family as float32 bit patterns) to C#.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Each edit is legal HLSL that computes the same bits, and closes one dialect gap the GLSL lowering
would otherwise have to special-case:
- snoise and snoise_grad: step(h, 0.0) -> step(h, float4(0.0, 0.0, 0.0, 0.0)); GLSL has no
step(genType, float).
- pcg: (state >> 28) + 4 -> + 4u; GLSL has no implicit int -> uint.
- cellular and phacelle jitter, cellular id: (float)((uint)hash.x >> 8) before the float
multiply; GLSL has no implicit uint -> float.
- damp (float2/3/4): the scalar amount is splatted explicitly; GLSL has no lerp(vecN, vecN, float)
promotion.
- pcg3d(float3) is defined before pcg3d(float2), which calls it; GLSL needs a declaration before use.
Both tracked copies; the C# mirror stays green, FXC cs_5_0 compiles both copies.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The cut's negative check is a pattern over math.Interval.cs and CultMath.Interval.hlsl: the
bounds use values only, so neither file names the gradient functions. Comments only.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Representation, the op list, the one-ulp widening rule and its two cases, the Lipschitz
provenance and pin, what the ball bounds guarantee and what they do not, tightness, the
saving and its open fork, and the consumers. Every number is one a committed test prints.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
IntervalTests runs every op over 10,000 seeded intervals x 16 points with no tolerance, and
kills each op's one-ulp-shrunk lo and hi; exp's widening is an equivalent mutant on this CPU,
and smoothstep's is killed by a constructed non-monotone step. NoiseBoundTests encloses snoise
and fbm over 2,000 balls x 64 points and the bounded domain warp, pins SNOISE_LIPSCHITZ against
1e5 points and the ascent from MeasureLipschitz's witness, prints tightness, and prints the
march saving. The saving is 0.93x, not 2x: that test skips with the fork named.
MeasureLipschitz and MeasureMonotonicity are explicit, slow tests.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
math.Interval.cs and shaders/CultMath.Interval.hlsl (included from CultMath.hlsl after Phacelle;
both tracked copies) add iv_point, iv_add, iv_sub, iv_neg, iv_mul, iv_scale, iv_abs, iv_min,
iv_max, iv_sqr, iv_sqrt, iv_exp, iv_clamp, iv_saturate, iv_smoothstep, iv_lerp, iv_snoise_ball
and iv_fbm_ball, and SNOISE_LIPSCHITZ = 10.099261 (1.10 x the refined max |snoise_grad| that
NoiseBoundTests.MeasureLipschitz prints). iv_exp and iv_smoothstep widen by one ulp through
asfloat(uint), added beside asuint as the HLSL intrinsic. The mirror test now compares 52
functions; the Unity package and the NuGet content files carry the new include.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Folds in the operator's rulings: Q1 cultmath-tapes, Q2 samples then
resolution, Q3 the shader owns a dynamic ground and the CSS wash is sampled
from its result. The nebula is flow-warped (two-phase flow map) with one
flow texture owning motion for the warp, the TAA motion vectors, the hue and
the stardust. Interval culling encloses the warp by enlarging the ball;
interval-ops gains that test. New fourth cut site-stardust: stateless
instanced particles plus an opacity-driven gather on the stardust layer, the
web form of the raymarch-driven DoF. Budget re-checked: the full stack lands
a mid-range phone at S = 4-6, not 8. Docs only.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Three cuts under a proposed cultmath-tapes campaign: a textual HLSL -> GLSL
lowering pinned by test, interval ops with enclosure tests and a committed
Lipschitz constant for snoise, and the site's per-pixel interval-culled,
TAA-accumulated cloud ground driven by body tokens with the CSS wash as the
fallback. Docs only.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
snoise moves to the upstream kernel (breaking values, minor bump for 0.y),
smin_grad, cellular, snoise/fbm/ridged gradients, Phacelle, BoundedLeastSquares.
Unity package licence is MIT AND MPL-2.0. Soul holds: asura:verdict:cut-2a-ii-c.s3.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2D snoise keeps r^2 0.5 and scale 130; only the permutation (+10) changed.
package.json license and LICENSE.md now match CultMath.csproj: MIT overall,
Phacelle files MPL-2.0 (operator ruling cultmath-license-mit-and-mpl).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Output of packages/cultmath/scripts/build-unity-package.ps1; reruns of the
script exit 0 with a clean tree.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Does not carry the rebuilt DLL yet; the Unity package script's version
parity check fails until the binary follows in the next commit.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
CultMesh document servers (Rust, TS, Python) refuse a put whose served snapshot reply
could never fit the response bound, before storing it. Refusals carry fixed text per
variant, acknowledge nothing, go unreliable and unordered, and never echo peer input or
OS text; publishers and the snapshot client report a refusal instead of timing out. Send
failures follow Cut D; a reply the queue cannot take is answered, not dropped; a failed
send's goodbye names a fixed error code in every runtime. Python validates options as
Rust does and survives any unstorable put or malformed TCP message.
Soul passes 1-4 plus merge verdict; the final batch closes it. Verified on Yggdrasil at
8b8f8436 (main merged): every CultNet/CultMesh suite in Rust, TS, Python and C#, interop 27/27.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The snapshot fallback sent the caught error's message to the peer, and
errors from getCache or the registry went the same way, so a message the
application or a peer supplied could reach the wire. Its ack fields also
covered the refused request. The snapshot path now refuses per case with
fixed text (the snapshot source failed / the snapshot response is too
large / the snapshot response could not be queued) through refuse(),
which sends unreliable and unordered, so it needs no room in a full
queue, with ack fields that acknowledge nothing, as every runtime's
refusal does. onError keeps the detail.
Tests, with a raw peer that acknowledges nothing: a queue of 8 filled
exactly by an unacknowledged 8-fragment reply, then a refusal that still
arrives and acknowledges nothing; and a getCache failure carrying a
canary, refused with "the snapshot source failed".
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
EndUnsendable put the SocketException's message on the wire, the
platform's wording. SendErrorCode names a permanent failure EMSGSIZE,
EINVAL or EAFNOSUPPORT, anything else UNKNOWN, so every runtime's
unsendable goodbye reads "packet could not be sent: CODE" with the same
codes.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Queue-full refusal (findings 2 and 6). The refusal was built in
_send_rudp_schema_frame before _end_refused_peer reset the session, so
its ack fields covered the refused request (ack=102 mask=0x3). A reply
the queue cannot take now raises _ReplyUnqueueable; the loop ends the
peer through _end_refused_peer, which builds the refusal before the
reset, gives it ack fields built after it (acknowledging nothing, like
the goodbye and like Rust's refusal), sends it unreliable and unordered,
then the goodbye. A refusal fragment that can never be sent is not
dropped: the goodbye names its failure ("packet could not be sent:
EMSGSIZE"), where it used to say the session refused a packet.
Queue full to the brim (item 1). The tests fill a queue of 8 exactly with
a reply the peer never acknowledges, then show the next reply is answered
with response_unqueueable, acknowledging nothing, followed by the
goodbye; and that a refusal whose fragment cannot be sent ends the
session with a goodbye naming EMSGSIZE.
TCP (finding 8). A message whose handling raised (snapshot recordKeys as
an int, a shard-log afterSequence that is not a number, subscribe,
schema-catalog and verse requests with int fields) killed the
connection's thread with a traceback that could quote the peer. The TCP
handler now refuses such a message with fixed text (message_unhandled),
logs the error type only, and serves the connection's next message.
Daemon (finding 10). --port 99999 is an argparse error (exit 2), not a
traceback.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
end_unsendable_session put the OSError's text on the wire, which is the
platform's wording and can quote an address. send_error_code names a
permanent failure EMSGSIZE, EINVAL or EAFNOSUPPORT (Winsock equivalents
included), anything else UNKNOWN, as the Rust and TypeScript goodbyes
do; is_permanent_send_error is now "has a known code".
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The queue-full test used an empty queue, so a reliable refusal fitted and
the reliable-refusal mutant lived. The new test fills a queue of 8
exactly with a reply the peer never acknowledges; the next reply cannot
be queued, and its refusal must still arrive, acknowledging nothing the
peer sent. A RawPeer helper drives the peer packet by packet; the gap
test uses it too.
A response too large for any datagram fails with the kernel's EMSGSIZE:
the rejection is ResponseSendFailed("EMSGSIZE"), the goodbye is exactly
"packet could not be sent: EMSGSIZE", and no refusal is sent.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
request_raw_snapshot_from_rudp_catalog put a catalog's error text into
its own error unfiltered. It now reports "refused the snapshot", naming
the refusal only when it is one of the fixed CultMesh refusal texts, as
the publisher does; both share recognised_refusal.
The publisher's doc claimed any refusing catalog is reported as a
refusal. That holds against a Rust catalog, which never acknowledges a
message it refuses; a catalog that acknowledges on receipt and refuses
afterwards (the TypeScript document server) is reported as having
admitted it. The doc now says so.
A fake catalog refusing with a canary is shared by the publisher test
and a new snapshot-client test.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
end_unsendable_session put the io::Error's Display on the wire: the
platform's wording, which differs by OS and by which packet failed.
cultnet-rs gains send_error_code, the fixed name of a failed send's
cause (EMSGSIZE, EINVAL, EAFNOSUPPORT, or UNKNOWN), matching the codes
the TypeScript goodbye already carries; is_permanent_send_error is now
"has a known code". The goodbye reads "packet could not be sent: CODE".
ResponseSendFailed carried an ErrorKind, which lost the cause (EMSGSIZE
has no kind and read as Uncategorized). It now carries the same fixed
code, and the session ends where the send failed, over the real error,
so the goodbye and the caller's rejection name the same failure.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
