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pm-kit: diagnostic — draw confirmed-working pattern to isolate blank screen

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Temporary: draw_ui (blue + corners) instead of draw_metronome in the loop, keeping
heap+audio+inputs. Blue+corners shown => display/heap fine, draw_metronome is the
bug. Still black => heap/display path. Revert after diagnosis.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
Me Here 2026-06-01 08:02:03 -05:00
parent 08b0940d73
commit aeda999526
1 changed files with 6 additions and 17 deletions
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23
rust/pm-kit/src/main.rs
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@ -266,23 +266,12 @@ fn main() -> ! {
// ---- draw: on change, and periodically (so a draw lost right after init reappears, and // ---- draw: on change, and periodically (so a draw lost right after init reappears, and
// the playhead advances). ~7 fps; partial/playhead-only redraw is the next optimization. ---- // the playhead advances). ~7 fps; partial/playhead-only redraw is the next optimization. ----
if full_redraw || now.wrapping_sub(last_draw_us) > 140_000 { if full_redraw || now.wrapping_sub(last_draw_us) > 140_000 {
let lanes: Vec<pm_ui::LaneView> = track // DIAGNOSTIC: draw the confirmed-working bring-up pattern instead of the metronome,
.lanes // to isolate whether the blank screen is draw_metronome or the heap/display path.
.iter() // If you see blue + 4 colored corners + "TL"/"PMK" → display+heap are fine and the
.map(|l| pm_ui::LaneView { // bug is in draw_metronome. If still black → it's the heap/display, not the drawing.
name: &l.sound, let _ = (notation, idx, tempo, phase, &track); // keep state alive while diagnosing
levels: &l.levels, pm_ui::draw_ui(&mut display).ok();
beats: l.groups.iter().map(|&g| g as u32).sum::<u32>().min(255) as u8,
poly: l.poly,
muted: l.mute,
})
.collect();
let screen = pm_ui::Screen { name: NAMES[idx], bpm: tempo, playing, phase, lanes: &lanes };
if notation {
pm_ui::draw_notation(&mut display, &screen).ok();
} else {
pm_ui::draw_metronome(&mut display, &screen).ok();
}
full_redraw = false; full_redraw = false;
last_draw_us = now; last_draw_us = now;
} }