FA-10632 / Color encoding / Member archive
Grayscale opacity independent · case 02
The grayscale luminance value is incorrectly copied into alpha.
Case contract
Expand a straight grayscale byte and independent alpha byte into straight RGBA.
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 fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| fixture 1 | [20, 20, 20, 20] | [20, 20, 20, 128] | 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.
Sign in to the archive ↗