FA-10685 / Rendering state / Member archive

State push deep copy · case 05

The saved state aliases a mutable color list and changes when current state changes.

Member previewVariant 5 · 3 implementations · 4 checks per implementation

Case contract

State maps names to flat lists and contains four-channel color. Save a snapshot, mutate a current color channel, and return the untouched full snapshot; do not mutate input.

Why this case matters

A deterministic software graphics stage with explicit channel and coordinate conventions; no hardware, device profile or API behavior is inferred.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
fixture 1	`{"color": [9, 2, 3, 4], "viewport": [0, 0, 8, 8]}`	`{"color": [1, 2, 3, 4], "viewport": [0, 0, 8, 8]}`	Failed

MEMBER ARCHIVE

The complete case is available to members.

This record includes three runnable implementations, regression fixtures, execution results, and source hashes.

Member access is invitation-based. Sign in with your invited account to inspect the sources.