FA-10728 / Rendering state / Member archive
Draw range base vertex · case 03
Draw first-index is ignored when selecting index-buffer elements.
Case contract
Given a valid index subrange, apply first/count to index-buffer positions and base to fetched vertex indices.
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 | [10, 12] | [12, 14] | Failed |
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