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Draw range base vertex · case 03

Draw first-index is ignored when selecting index-buffer elements.

Member previewVariant 3 · 3 implementations · 4 checks per implementation

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 fixture

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

Boundary fixtureActualExpectedOutcome
fixture 1[10, 12][12, 14]Failed

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

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