FA-52787 / Raster memory layout / Member archive
Split Depth Stencil Aspects: Depth-stencil allocation assumes packed layout or depth stride for stencil · case 02
The returned physical layout descriptor disagrees with the declared buffer mapping at allocation_end.
Case contract
A toy depth-stencil image stores three depth bytes per texel in one plane and one stencil byte per texel in a second plane. Depth rows have one pad byte, stencil rows two; planes begin with distinct four- and six-byte tags. 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 fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| layout fixture 1 | {"allocation_end": 26, "depth_address": 26, "depth_origin": 26, "depth_pitch": 4, "selected_address": 26, "selected_end": 29, "selected_width": 3, "stencil_address": 36, "stencil_origin": 36, "stencil_pitch": 3} | {"allocation_end": 39, "depth_address": 26, "depth_origin": 26, "depth_pitch": 4, "selected_address": 26, "selected_end": 29, "selected_width": 3, "stencil_address": 36, "stencil_origin": 36, "stencil_pitch": 3} | Failed |
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