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FA-51461 / Raster clipping / Open access

User distance clip cull: missing cull component · case 01

Missing cull distances create false full-primitive rejection.

Verified by executionVariant 1 · 15 checks per implementationDownload source bundle ↓JSON ↗

ROOT CAUSE

Missing cull distances create false full-primitive rejection.

THE FAILURE

Missing cull distances create false full-primitive rejection.

Unsuccessful approach: Broadcasting the last supplied cull distance activates absent planes.

Case contract

Each primitive carries per-vertex clip-distance and cull-distance arrays, active bitmasks and a raster-discard flag. A primitive is rejected if every vertex is negative on any one enabled clip or cull plane. Surviving primitives need clipping if any enabled clip distance is negative; cull distances never cause partial clipping. Missing components default to zero and disabled plane bits are ignored. Empty primitives and raster-discarded primitives emit discarded. Only low size plane slots exist.

Why this case matters

Raster clip state can leak coverage across draws even when every individual region is valid.

1 / The failure

Exit 1
"""Failure Map reference implementation. Python standard library only."""
import json

N = 1
observations = []
def solve(commands, size):
    out=[]
    for clips,culls,clip_mask,cull_mask,discard in commands:
        if discard or not clips: out.append('discarded'); continue
        reject=False
        partial=False
        for plane in range(size):
            if clip_mask & (1<<plane):
                values=[v[plane] if plane<len(v) else 0 for v in clips]
                if all(x<0 for x in values): reject=True
                if any(x<0 for x in values): partial=True
            if cull_mask & (1<<plane):
                values=[v[plane] if plane<len(v) else -1 for v in culls]
                if values and all(x<0 for x in values): reject=True
        out.append('discarded' if reject else 'clipped' if partial else 'accepted')
    return out
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
if N == 1:
    check('explicit sequence 0', solve([[[[1], [1]], [[1], [1]], 1, 0, True]], 4), ['discarded'])
    check('explicit sequence 1', solve([[[[-1], [1]], [[0], [0]], 1, 0, False]], 4), ['clipped'])
    check('explicit sequence 2', solve([[[[1], [-1]], [[0], [0]], 1, 0, False]], 4), ['clipped'])
    check('explicit sequence 3', solve([[[[1], [1]], [[-3], [1]], 0, 1, False]], 4), ['accepted'])
    check('explicit sequence 4', solve([[[[1], [1]], [[-1], [1]], 0, 1, False]], 4), ['accepted'])
    check('explicit sequence 5', solve([[[[-1], [-1]], [[0], [0]], 2, 0, False]], 4), ['accepted'])
    check('explicit sequence 6', solve([[[[0], [0]], [[-1], [-1]], 0, 2, False]], 4), ['accepted'])
    check('explicit sequence 7', solve([[[[1], [1]], [[-1], [-1]], 0, 1, False]], 4), ['discarded'])
    check('explicit sequence 8', solve([[[[-1], [1]], [[-1], [-1]], 1, 0, False]], 4), ['clipped'])
    check('explicit sequence 9', solve([[[[-1, 1], [1, 1]], [[-1], [-1]], 1, 1, False]], 4), ['discarded'])
    check('explicit sequence 10', solve([[[[1, 1, 1, 1, -1], [1, 1, 1, 1, -1]], [[0], [0]], 16, 0, False]], 4), ['accepted'])
    check('explicit sequence 11', solve([[[], [], 0, 0, False]], 4), ['discarded'])
    check('explicit sequence 12', solve([[[[0], [0]], [[0], [0]], 1, 1, False]], 4), ['accepted'])
    check('explicit sequence 13', solve([[[[-1], [-1], [1]], [[0], [0], [0]], 1, 0, False]], 4), ['clipped'])
    check('explicit sequence 14', solve([[[[-1], [1]], [[0], [0]], 0, 1, False]], 4), ['accepted'])
if N == 2:
    check('explicit sequence 0', solve([[[[1], [1]], [[1], [1]], 1, 0, True]], 5), ['discarded'])
    check('explicit sequence 1', solve([[[[-1], [1]], [[0], [0]], 1, 0, False]], 5), ['clipped'])
    check('explicit sequence 2', solve([[[[1], [-1]], [[0], [0]], 1, 0, False]], 5), ['clipped'])
    check('explicit sequence 3', solve([[[[1], [1]], [[-3], [1]], 0, 1, False]], 5), ['accepted'])
    check('explicit sequence 4', solve([[[[1], [1]], [[-1], [1]], 0, 1, False]], 5), ['accepted'])
    check('explicit sequence 5', solve([[[[-1], [-1]], [[0], [0]], 2, 0, False]], 5), ['accepted'])
    check('explicit sequence 6', solve([[[[0], [0]], [[-1], [-1]], 0, 2, False]], 5), ['accepted'])
    check('explicit sequence 7', solve([[[[1], [1]], [[-1], [-1]], 0, 1, False]], 5), ['discarded'])
    check('explicit sequence 8', solve([[[[-1], [1]], [[-1], [-1]], 1, 0, False]], 5), ['clipped'])
    check('explicit sequence 9', solve([[[[-1, 1], [1, 1]], [[-1], [-1]], 1, 1, False]], 5), ['discarded'])
    check('explicit sequence 10', solve([[[[1, 1, 1, 1, -1], [1, 1, 1, 1, -1]], [[0], [0]], 16, 0, False]], 5), ['discarded'])
    check('explicit sequence 11', solve([[[], [], 0, 0, False]], 5), ['discarded'])
    check('explicit sequence 12', solve([[[[0], [0]], [[0], [0]], 1, 1, False]], 5), ['accepted'])
    check('explicit sequence 13', solve([[[[-1], [-1], [1]], [[0], [0], [0]], 1, 0, False]], 5), ['clipped'])
    check('explicit sequence 14', solve([[[[-1], [1]], [[0], [0]], 0, 1, False]], 5), ['accepted'])
if N == 3:
    check('explicit sequence 0', solve([[[[1], [1]], [[1], [1]], 1, 0, True]], 6), ['discarded'])
    check('explicit sequence 1', solve([[[[-1], [1]], [[0], [0]], 1, 0, False]], 6), ['clipped'])
    check('explicit sequence 2', solve([[[[1], [-1]], [[0], [0]], 1, 0, False]], 6), ['clipped'])
    check('explicit sequence 3', solve([[[[1], [1]], [[-3], [1]], 0, 1, False]], 6), ['accepted'])
    check('explicit sequence 4', solve([[[[1], [1]], [[-1], [1]], 0, 1, False]], 6), ['accepted'])
    check('explicit sequence 5', solve([[[[-1], [-1]], [[0], [0]], 2, 0, False]], 6), ['accepted'])
    check('explicit sequence 6', solve([[[[0], [0]], [[-1], [-1]], 0, 2, False]], 6), ['accepted'])
    check('explicit sequence 7', solve([[[[1], [1]], [[-1], [-1]], 0, 1, False]], 6), ['discarded'])
    check('explicit sequence 8', solve([[[[-1], [1]], [[-1], [-1]], 1, 0, False]], 6), ['clipped'])
    check('explicit sequence 9', solve([[[[-1, 1], [1, 1]], [[-1], [-1]], 1, 1, False]], 6), ['discarded'])
    check('explicit sequence 10', solve([[[[1, 1, 1, 1, -1], [1, 1, 1, 1, -1]], [[0], [0]], 16, 0, False]], 6), ['discarded'])
    check('explicit sequence 11', solve([[[], [], 0, 0, False]], 6), ['discarded'])
    check('explicit sequence 12', solve([[[[0], [0]], [[0], [0]], 1, 1, False]], 6), ['accepted'])
    check('explicit sequence 13', solve([[[[-1], [-1], [1]], [[0], [0], [0]], 1, 0, False]], 6), ['clipped'])
    check('explicit sequence 14', solve([[[[-1], [1]], [[0], [0]], 0, 1, False]], 6), ['accepted'])
if N == 4:
    check('explicit sequence 0', solve([[[[1], [1]], [[1], [1]], 1, 0, True]], 7), ['discarded'])
    check('explicit sequence 1', solve([[[[-1], [1]], [[0], [0]], 1, 0, False]], 7), ['clipped'])
    check('explicit sequence 2', solve([[[[1], [-1]], [[0], [0]], 1, 0, False]], 7), ['clipped'])
    check('explicit sequence 3', solve([[[[1], [1]], [[-3], [1]], 0, 1, False]], 7), ['accepted'])
    check('explicit sequence 4', solve([[[[1], [1]], [[-1], [1]], 0, 1, False]], 7), ['accepted'])
    check('explicit sequence 5', solve([[[[-1], [-1]], [[0], [0]], 2, 0, False]], 7), ['accepted'])
    check('explicit sequence 6', solve([[[[0], [0]], [[-1], [-1]], 0, 2, False]], 7), ['accepted'])
    check('explicit sequence 7', solve([[[[1], [1]], [[-1], [-1]], 0, 1, False]], 7), ['discarded'])
    check('explicit sequence 8', solve([[[[-1], [1]], [[-1], [-1]], 1, 0, False]], 7), ['clipped'])
    check('explicit sequence 9', solve([[[[-1, 1], [1, 1]], [[-1], [-1]], 1, 1, False]], 7), ['discarded'])
    check('explicit sequence 10', solve([[[[1, 1, 1, 1, -1], [1, 1, 1, 1, -1]], [[0], [0]], 16, 0, False]], 7), ['discarded'])
    check('explicit sequence 11', solve([[[], [], 0, 0, False]], 7), ['discarded'])
    check('explicit sequence 12', solve([[[[0], [0]], [[0], [0]], 1, 1, False]], 7), ['accepted'])
    check('explicit sequence 13', solve([[[[-1], [-1], [1]], [[0], [0], [0]], 1, 0, False]], 7), ['clipped'])
    check('explicit sequence 14', solve([[[[-1], [1]], [[0], [0]], 0, 1, False]], 7), ['accepted'])
if N == 5:
    check('explicit sequence 0', solve([[[[1], [1]], [[1], [1]], 1, 0, True]], 8), ['discarded'])
    check('explicit sequence 1', solve([[[[-1], [1]], [[0], [0]], 1, 0, False]], 8), ['clipped'])
    check('explicit sequence 2', solve([[[[1], [-1]], [[0], [0]], 1, 0, False]], 8), ['clipped'])
    check('explicit sequence 3', solve([[[[1], [1]], [[-3], [1]], 0, 1, False]], 8), ['accepted'])
    check('explicit sequence 4', solve([[[[1], [1]], [[-1], [1]], 0, 1, False]], 8), ['accepted'])
    check('explicit sequence 5', solve([[[[-1], [-1]], [[0], [0]], 2, 0, False]], 8), ['accepted'])
    check('explicit sequence 6', solve([[[[0], [0]], [[-1], [-1]], 0, 2, False]], 8), ['accepted'])
    check('explicit sequence 7', solve([[[[1], [1]], [[-1], [-1]], 0, 1, False]], 8), ['discarded'])
    check('explicit sequence 8', solve([[[[-1], [1]], [[-1], [-1]], 1, 0, False]], 8), ['clipped'])
    check('explicit sequence 9', solve([[[[-1, 1], [1, 1]], [[-1], [-1]], 1, 1, False]], 8), ['discarded'])
    check('explicit sequence 10', solve([[[[1, 1, 1, 1, -1], [1, 1, 1, 1, -1]], [[0], [0]], 16, 0, False]], 8), ['discarded'])
    check('explicit sequence 11', solve([[[], [], 0, 0, False]], 8), ['discarded'])
    check('explicit sequence 12', solve([[[[0], [0]], [[0], [0]], 1, 1, False]], 8), ['accepted'])
    check('explicit sequence 13', solve([[[[-1], [-1], [1]], [[0], [0], [0]], 1, 0, False]], 8), ['clipped'])
    check('explicit sequence 14', solve([[[[-1], [1]], [[0], [0]], 0, 1, False]], 8), ['accepted'])
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)
Boundary fixtureActualExpectedOutcome
explicit sequence 0['discarded']['discarded']Passed
explicit sequence 1['clipped']['clipped']Passed
explicit sequence 2['clipped']['clipped']Passed
explicit sequence 3['accepted']['accepted']Passed
explicit sequence 4['accepted']['accepted']Passed
explicit sequence 5['accepted']['accepted']Passed
explicit sequence 6['discarded']['accepted']Failed
explicit sequence 7['discarded']['discarded']Passed
explicit sequence 8['clipped']['clipped']Passed
explicit sequence 9['discarded']['discarded']Passed
explicit sequence 10['accepted']['accepted']Passed
explicit sequence 11['discarded']['discarded']Passed
explicit sequence 12['accepted']['accepted']Passed
explicit sequence 13['clipped']['clipped']Passed
explicit sequence 14['accepted']['accepted']Passed

SHA-256 / 9f6c01234c034a707d921b2fc28a9b45d41bb1384dc653d449e007278f550156

2 / The unsuccessful fix

Exit 1
"""Failure Map reference implementation. Python standard library only."""
import json

N = 1
observations = []
def solve(commands, size):
    out=[]
    for clips,culls,clip_mask,cull_mask,discard in commands:
        if discard or not clips: out.append('discarded'); continue
        reject=False
        partial=False
        for plane in range(size):
            if clip_mask & (1<<plane):
                values=[v[plane] if plane<len(v) else 0 for v in clips]
                if all(x<0 for x in values): reject=True
                if any(x<0 for x in values): partial=True
            if cull_mask & (1<<plane):
                values=[v[plane] if plane<len(v) else (v[-1] if v else 0) for v in culls]
                if values and all(x<0 for x in values): reject=True
        out.append('discarded' if reject else 'clipped' if partial else 'accepted')
    return out
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
if N == 1:
    check('explicit sequence 0', solve([[[[1], [1]], [[1], [1]], 1, 0, True]], 4), ['discarded'])
    check('explicit sequence 1', solve([[[[-1], [1]], [[0], [0]], 1, 0, False]], 4), ['clipped'])
    check('explicit sequence 2', solve([[[[1], [-1]], [[0], [0]], 1, 0, False]], 4), ['clipped'])
    check('explicit sequence 3', solve([[[[1], [1]], [[-3], [1]], 0, 1, False]], 4), ['accepted'])
    check('explicit sequence 4', solve([[[[1], [1]], [[-1], [1]], 0, 1, False]], 4), ['accepted'])
    check('explicit sequence 5', solve([[[[-1], [-1]], [[0], [0]], 2, 0, False]], 4), ['accepted'])
    check('explicit sequence 6', solve([[[[0], [0]], [[-1], [-1]], 0, 2, False]], 4), ['accepted'])
    check('explicit sequence 7', solve([[[[1], [1]], [[-1], [-1]], 0, 1, False]], 4), ['discarded'])
    check('explicit sequence 8', solve([[[[-1], [1]], [[-1], [-1]], 1, 0, False]], 4), ['clipped'])
    check('explicit sequence 9', solve([[[[-1, 1], [1, 1]], [[-1], [-1]], 1, 1, False]], 4), ['discarded'])
    check('explicit sequence 10', solve([[[[1, 1, 1, 1, -1], [1, 1, 1, 1, -1]], [[0], [0]], 16, 0, False]], 4), ['accepted'])
    check('explicit sequence 11', solve([[[], [], 0, 0, False]], 4), ['discarded'])
    check('explicit sequence 12', solve([[[[0], [0]], [[0], [0]], 1, 1, False]], 4), ['accepted'])
    check('explicit sequence 13', solve([[[[-1], [-1], [1]], [[0], [0], [0]], 1, 0, False]], 4), ['clipped'])
    check('explicit sequence 14', solve([[[[-1], [1]], [[0], [0]], 0, 1, False]], 4), ['accepted'])
if N == 2:
    check('explicit sequence 0', solve([[[[1], [1]], [[1], [1]], 1, 0, True]], 5), ['discarded'])
    check('explicit sequence 1', solve([[[[-1], [1]], [[0], [0]], 1, 0, False]], 5), ['clipped'])
    check('explicit sequence 2', solve([[[[1], [-1]], [[0], [0]], 1, 0, False]], 5), ['clipped'])
    check('explicit sequence 3', solve([[[[1], [1]], [[-3], [1]], 0, 1, False]], 5), ['accepted'])
    check('explicit sequence 4', solve([[[[1], [1]], [[-1], [1]], 0, 1, False]], 5), ['accepted'])
    check('explicit sequence 5', solve([[[[-1], [-1]], [[0], [0]], 2, 0, False]], 5), ['accepted'])
    check('explicit sequence 6', solve([[[[0], [0]], [[-1], [-1]], 0, 2, False]], 5), ['accepted'])
    check('explicit sequence 7', solve([[[[1], [1]], [[-1], [-1]], 0, 1, False]], 5), ['discarded'])
    check('explicit sequence 8', solve([[[[-1], [1]], [[-1], [-1]], 1, 0, False]], 5), ['clipped'])
    check('explicit sequence 9', solve([[[[-1, 1], [1, 1]], [[-1], [-1]], 1, 1, False]], 5), ['discarded'])
    check('explicit sequence 10', solve([[[[1, 1, 1, 1, -1], [1, 1, 1, 1, -1]], [[0], [0]], 16, 0, False]], 5), ['discarded'])
    check('explicit sequence 11', solve([[[], [], 0, 0, False]], 5), ['discarded'])
    check('explicit sequence 12', solve([[[[0], [0]], [[0], [0]], 1, 1, False]], 5), ['accepted'])
    check('explicit sequence 13', solve([[[[-1], [-1], [1]], [[0], [0], [0]], 1, 0, False]], 5), ['clipped'])
    check('explicit sequence 14', solve([[[[-1], [1]], [[0], [0]], 0, 1, False]], 5), ['accepted'])
if N == 3:
    check('explicit sequence 0', solve([[[[1], [1]], [[1], [1]], 1, 0, True]], 6), ['discarded'])
    check('explicit sequence 1', solve([[[[-1], [1]], [[0], [0]], 1, 0, False]], 6), ['clipped'])
    check('explicit sequence 2', solve([[[[1], [-1]], [[0], [0]], 1, 0, False]], 6), ['clipped'])
    check('explicit sequence 3', solve([[[[1], [1]], [[-3], [1]], 0, 1, False]], 6), ['accepted'])
    check('explicit sequence 4', solve([[[[1], [1]], [[-1], [1]], 0, 1, False]], 6), ['accepted'])
    check('explicit sequence 5', solve([[[[-1], [-1]], [[0], [0]], 2, 0, False]], 6), ['accepted'])
    check('explicit sequence 6', solve([[[[0], [0]], [[-1], [-1]], 0, 2, False]], 6), ['accepted'])
    check('explicit sequence 7', solve([[[[1], [1]], [[-1], [-1]], 0, 1, False]], 6), ['discarded'])
    check('explicit sequence 8', solve([[[[-1], [1]], [[-1], [-1]], 1, 0, False]], 6), ['clipped'])
    check('explicit sequence 9', solve([[[[-1, 1], [1, 1]], [[-1], [-1]], 1, 1, False]], 6), ['discarded'])
    check('explicit sequence 10', solve([[[[1, 1, 1, 1, -1], [1, 1, 1, 1, -1]], [[0], [0]], 16, 0, False]], 6), ['discarded'])
    check('explicit sequence 11', solve([[[], [], 0, 0, False]], 6), ['discarded'])
    check('explicit sequence 12', solve([[[[0], [0]], [[0], [0]], 1, 1, False]], 6), ['accepted'])
    check('explicit sequence 13', solve([[[[-1], [-1], [1]], [[0], [0], [0]], 1, 0, False]], 6), ['clipped'])
    check('explicit sequence 14', solve([[[[-1], [1]], [[0], [0]], 0, 1, False]], 6), ['accepted'])
if N == 4:
    check('explicit sequence 0', solve([[[[1], [1]], [[1], [1]], 1, 0, True]], 7), ['discarded'])
    check('explicit sequence 1', solve([[[[-1], [1]], [[0], [0]], 1, 0, False]], 7), ['clipped'])
    check('explicit sequence 2', solve([[[[1], [-1]], [[0], [0]], 1, 0, False]], 7), ['clipped'])
    check('explicit sequence 3', solve([[[[1], [1]], [[-3], [1]], 0, 1, False]], 7), ['accepted'])
    check('explicit sequence 4', solve([[[[1], [1]], [[-1], [1]], 0, 1, False]], 7), ['accepted'])
    check('explicit sequence 5', solve([[[[-1], [-1]], [[0], [0]], 2, 0, False]], 7), ['accepted'])
    check('explicit sequence 6', solve([[[[0], [0]], [[-1], [-1]], 0, 2, False]], 7), ['accepted'])
    check('explicit sequence 7', solve([[[[1], [1]], [[-1], [-1]], 0, 1, False]], 7), ['discarded'])
    check('explicit sequence 8', solve([[[[-1], [1]], [[-1], [-1]], 1, 0, False]], 7), ['clipped'])
    check('explicit sequence 9', solve([[[[-1, 1], [1, 1]], [[-1], [-1]], 1, 1, False]], 7), ['discarded'])
    check('explicit sequence 10', solve([[[[1, 1, 1, 1, -1], [1, 1, 1, 1, -1]], [[0], [0]], 16, 0, False]], 7), ['discarded'])
    check('explicit sequence 11', solve([[[], [], 0, 0, False]], 7), ['discarded'])
    check('explicit sequence 12', solve([[[[0], [0]], [[0], [0]], 1, 1, False]], 7), ['accepted'])
    check('explicit sequence 13', solve([[[[-1], [-1], [1]], [[0], [0], [0]], 1, 0, False]], 7), ['clipped'])
    check('explicit sequence 14', solve([[[[-1], [1]], [[0], [0]], 0, 1, False]], 7), ['accepted'])
if N == 5:
    check('explicit sequence 0', solve([[[[1], [1]], [[1], [1]], 1, 0, True]], 8), ['discarded'])
    check('explicit sequence 1', solve([[[[-1], [1]], [[0], [0]], 1, 0, False]], 8), ['clipped'])
    check('explicit sequence 2', solve([[[[1], [-1]], [[0], [0]], 1, 0, False]], 8), ['clipped'])
    check('explicit sequence 3', solve([[[[1], [1]], [[-3], [1]], 0, 1, False]], 8), ['accepted'])
    check('explicit sequence 4', solve([[[[1], [1]], [[-1], [1]], 0, 1, False]], 8), ['accepted'])
    check('explicit sequence 5', solve([[[[-1], [-1]], [[0], [0]], 2, 0, False]], 8), ['accepted'])
    check('explicit sequence 6', solve([[[[0], [0]], [[-1], [-1]], 0, 2, False]], 8), ['accepted'])
    check('explicit sequence 7', solve([[[[1], [1]], [[-1], [-1]], 0, 1, False]], 8), ['discarded'])
    check('explicit sequence 8', solve([[[[-1], [1]], [[-1], [-1]], 1, 0, False]], 8), ['clipped'])
    check('explicit sequence 9', solve([[[[-1, 1], [1, 1]], [[-1], [-1]], 1, 1, False]], 8), ['discarded'])
    check('explicit sequence 10', solve([[[[1, 1, 1, 1, -1], [1, 1, 1, 1, -1]], [[0], [0]], 16, 0, False]], 8), ['discarded'])
    check('explicit sequence 11', solve([[[], [], 0, 0, False]], 8), ['discarded'])
    check('explicit sequence 12', solve([[[[0], [0]], [[0], [0]], 1, 1, False]], 8), ['accepted'])
    check('explicit sequence 13', solve([[[[-1], [-1], [1]], [[0], [0], [0]], 1, 0, False]], 8), ['clipped'])
    check('explicit sequence 14', solve([[[[-1], [1]], [[0], [0]], 0, 1, False]], 8), ['accepted'])
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)
Boundary fixtureActualExpectedOutcome
explicit sequence 0['discarded']['discarded']Passed
explicit sequence 1['clipped']['clipped']Passed
explicit sequence 2['clipped']['clipped']Passed
explicit sequence 3['accepted']['accepted']Passed
explicit sequence 4['accepted']['accepted']Passed
explicit sequence 5['accepted']['accepted']Passed
explicit sequence 6['discarded']['accepted']Failed
explicit sequence 7['discarded']['discarded']Passed
explicit sequence 8['clipped']['clipped']Passed
explicit sequence 9['discarded']['discarded']Passed
explicit sequence 10['accepted']['accepted']Passed
explicit sequence 11['discarded']['discarded']Passed
explicit sequence 12['accepted']['accepted']Passed
explicit sequence 13['clipped']['clipped']Passed
explicit sequence 14['accepted']['accepted']Passed

SHA-256 / 9acbb5543cc46114290aaf85f2c32ceae7d670fb085e29063df92de586714953

HELD IN THE MEMBER ARCHIVE

The verified repair and its recorded checks are member-only.

This mechanism has 15 recorded checks per implementation. The open-access tier publishes the failure and the unsuccessful fix; the repaired source that passes every check, and the observations that prove it, are available to members.

Every case sharing this mechanism uses the same contract and the same repair, so this one record is held back for all of them.

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Verification & scope

Finite one-dimensional integer sample sets model coverage state only; no geometric intersection, memory layout, GPU or graphics-standard conformance is claimed. This reproducer isolates one failure mechanism. Results cover the supplied fixtures. Variants within a family share a test contract and should remain grouped when constructing evaluation splits. Related mechanisms with a shared evaluation_group must also remain together; these controlled models are not independent production incidents.

Observations recorded using Python 3.12.14 at 2026-09-29T14:45:19.243852+00:00.

Case digest / f8d2b89f30e35248571667dbd762786d866a86d0a6d88824faae466760a1239b