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taut: crash when viewing metainst on tab 2+

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minjaesong
2026-06-14 19:25:23 +09:00
parent 94b65a2801
commit 62fe227b6b
2 changed files with 9 additions and 4 deletions
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11
assets/disk0/tvdos/bin/taut.js
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@@ -5349,8 +5349,12 @@ function resolveHairlineHits(hits) {
}
// Pull the envelope object + JSR223 getter pair for the active inst sub-tab. Returns null
// for tabs without a graph (Gen.1 / Gen.2).
// for tabs without a graph (Gen.1 / Gen.2) AND for Metainstruments, whose decoded record has
// no vol/pan/pf envelopes (it carries a layer table instead) — drawInstTabMeta renders every
// sub-tab for them, so without this guard the VOL/PAN/PIT branches return { env: undefined }
// and the cursor walker dereferences env.terminatorIdx on undefined.
function envBundleForCurrentTab(e) {
if (e.decoded.isMeta) return null
if (instSubTab === INST_TAB_VOL) return { env: e.decoded.volEnv,
idxFn: 'getVoiceEnvVolIndex', timeFn: 'getVoiceEnvVolTime' }
if (instSubTab === INST_TAB_PAN) return { env: e.decoded.panEnv,
@@ -5429,8 +5433,9 @@ function drawEnvelopeCursor() {
const e = instrumentsCache[instListCursor]
if (!e) { eraseEnvCursorIfAny(); return }
const bundle = envBundleForCurrentTab(e)
// Gen.1 / Gen.2 have no envelope graph — wipe any stale hairline and bail.
if (!bundle) { eraseEnvCursorIfAny(); return }
// Gen.1 / Gen.2 (and Metainstruments) have no envelope graph — wipe any stale hairline and
// bail. The !bundle.env check also covers a malformed record whose env slot is missing.
if (!bundle || !bundle.env) { eraseEnvCursorIfAny(); return }
const env = bundle.env
const lastIdx = (env.terminatorIdx >= 0) ? env.terminatorIdx : (env.nodes.length - 1)
if (lastIdx < 0) { eraseEnvCursorIfAny(); return }

2
terranmon.txt
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@@ -2833,7 +2833,7 @@ TODO:
- Samples playblobs: only active for actually playing samples
- Samples playcursor: true cursors for actually playing samples
[ ] implement note-fade (0x0003) and wire it to it2taud
[ ] taut.js quit with TypeError: Cannot read property 'terminatorIdx' of undefined:
[x] taut.js quit with TypeError: Cannot read property 'terminatorIdx' of undefined:
TypeError: Cannot read property 'terminatorIdx' of undefined
at drawEnvelopeCursor (<eval>:5312:22)
at drawInstrumentsContents (<eval>:4919:41)