FA-51964 / Raster memory layout / Member archive

Bricked Volume: Volume slab stride omits brick rows · case 04

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

Member previewVariant 4 · 3 implementations · 6 checks per implementation

Case contract

Volume storage uses 4x2x3 bricks in x-fastest brick order. Bricks have a metadata prefix; x-fastest texels fill each brick including edge padding. 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 3	`{"address": 2356, "allocation": 15360, "brick_columns": 4, "brick_id": 18, "brick_layers": 5, "brick_pitch": 128, "brick_rows": 6, "brick_xy": 14, "local_slice": 0, "local_texel": 0}`	`{"address": 4916, "allocation": 15360, "brick_columns": 4, "brick_id": 38, "brick_layers": 5, "brick_pitch": 128, "brick_rows": 6, "brick_xy": 14, "local_slice": 0, "local_texel": 0}`	Failed

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

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