modeset demo: single startup splat, drop idle re-seed#710
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The fluid sim was auto-firing a demo splat pair every 90 frames (~1.5 s) whenever no mouse button was held, cycling through three position variants. The recurring re-seed was visually intrusive — the intent of the demo splat is to show the sim is alive on first frame, not to keep redrawing. Keep only the frame == 0 pair, and shift its colors from HDR red-orange + cyan to clean red + blue. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Phase B-1 matrix build status —
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| Package | Arch | Status | Sha |
|---|---|---|---|
| modeset | wasm32 | built | b6eda8ac |
| shell | wasm32 | built | 063de31a |
| lamp | wasm32 | built | 13000097 |
| node-vfs | wasm32 | built | 55a59d3b |
| wordpress | wasm32 | built | 4d1e86cc |
Auto-generated; replaced on each push. Raw data in the publish-status workflow artifact.
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prepare-merge: test-gate passed against the synthetic PR merge and |
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Follow-up on : #678
Summary
programs/modeset.cwas auto-firing a demo splat pair every 90 frames (~1.5 s) whenever no mouse button was held — three rotating positions, courtesy of(buttons == 0 && (frame % 90) == 0)plusp = (frame / 90) % 3. The repeated re-seed is visually intrusive: the splat exists to prove the sim is alive on the first frame, not to keep redrawing.frame == 0only. The position-cyclingpand the periodic disjunct are gone.2.60, 0.55, 0.18/0.18, 1.20, 2.80) to cleaner red + blue (2.80, 0.05, 0.05/0.05, 0.05, 2.80). The off-channels stay at0.05rather than0so the bloom/sunrays passes have something non-zero to work with — well below visual perception of a tint.User-space C only — no kernel, host, or ABI surface touched, so dual-host parity isn't in play here.
Test plan
./run.sh browser, open the Modeset pane, confirm one red+blue splat pair at startup and no further auto re-seeds while idle.programs/modeset.cis green.