FA-53254 / Raster memory layout / Member archive

Volume Transfer Skip Footprint: Upload skips count pixels as bytes or images as rows · case 04

The returned physical layout descriptor disagrees with the declared buffer mapping at skip_bytes.

Member previewVariant 4 · 3 implementations · 6 checks per implementation

Case contract

A 3D upload buffer has independently specified row length, image height, and byte pixel size. A valid subvolume starts after skipped images, rows, and pixels. Destination uses independent row and slice pitches; return all per-row transfer origins. Return the named intermediate layout descriptor and final address fields; all quantities are integer byte offsets unless explicitly stated.

Why this case matters

Offline raster resource, upload, readback, and storage-layout regression model.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
layout fixture 1	`{"destination_required": 10, "destination_rows": [404], "row_bytes": 10, "skip_bytes": 541, "source_origin": 569, "source_required": 551, "source_row_pitch": 60, "source_rows": [569], "source_slice_pitch": 420, "transfers": [[569, 404, 10]]}`	`{"destination_required": 10, "destination_rows": [404], "row_bytes": 10, "skip_bytes": 545, "source_origin": 573, "source_required": 555, "source_row_pitch": 60, "source_rows": [573], "source_slice_pitch": 420, "transfers": [[573, 404, 10]]}`	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.