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FA-10627 / Color encoding / Member archive

Palette alpha lookup · case 02

Palette expansion makes every transparent palette entry opaque.

Member previewVariant 2 · 3 implementations · 4 checks per implementation

Case contract

Expand valid palette indices into independent RGBA byte lists, retaining per-entry transparency.

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 fixtureActualExpectedOutcome
fixture 1[[0, 0, 255, 255], [255, 0, 0, 255]][[0, 0, 255, 0], [255, 0, 0, 255]]Failed

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

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