vicrodh
ce7f29ff9c
The artifact is now `target/<profile>/qbz` (owner, 2026-08-04). The package stays `qbz-qt`, so `cargo build -p qbz-qt` is unchanged. ⚠ `crates/qbz` — the Slint binary — declares the SAME bin name and shares this workspace's target dir, so both write `target/<profile>/qbz` and the last build wins. Survivable only because the Slint binary is never built in this worktree (the qbz-ui 20-30 GB wall); if it ever is, a smoke against "the wrong qbz" is silent. Written into Cargo.toml beside the name. The MPRIS line exists because "Plasma sees nothing" has two very different causes — the player never registered, or it registered and no metadata was ever pushed — and the log could not tell them apart. It settled that question the same day: the owner's log shows `[mpris] metadata pushed: Holy Diver — Dio (350s)`, so the port's half works and what remains is desktop-side. cc
133 lines
6.1 KiB
Bash
Executable File
133 lines
6.1 KiB
Bash
Executable File
#!/usr/bin/env bash
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# QBZ Qt — RENDERING DIAGNOSTIC. Launches the app with Qt's scene-graph and RHI
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# logging on, samples the process's CPU while you drive it, and leaves ONE log
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# file you can copy off the machine.
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#
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# Why this exists: the whole "this port runs on the software renderer" doctrine
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# — repeated across ~8 QML file headers and used to justify pre-baked icon
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# tints, Canvas-based rounded covers and a blanket no-effects rule — came from
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# an observation made OFFSCREEN, and QT_QPA_PLATFORM=offscreen forces software
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# by definition. On Linux, QSG_INFO in a real window says otherwise: OpenGL RHI,
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# threaded render loop, Intel Arc. macOS is still unmeasured. So: measure, in a
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# REAL graphical session, never over ssh and never offscreen.
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#
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# WHAT TO DO WHILE IT RUNS (the log is only as good as the session):
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# 1. Let it sit idle on Home for ~15s.
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# 2. Play a track. Let it settle ~15s.
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# 3. Switch the now-playing bar through its modes (New / Classic / Small /
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# Large), pausing ~15s on each — Large is the one that mounts the FFT
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# spectrum, which is the suspect.
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# 4. Hover a few album cards.
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# 5. Close the app normally. The summary is written on exit.
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#
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# Usage: ./scripts/qt-diag.sh # release binary, must already be built
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# DEBUG=1 ./scripts/qt-diag.sh # debug binary instead
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# INTERVAL=2 ./scripts/qt-diag.sh # CPU sample period in seconds (default 2)
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set -uo pipefail
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cd "$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)/.."
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UNAME_S="$(uname -s)"
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PROFILE=$([[ "${DEBUG:-0}" == 1 ]] && echo debug || echo release)
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BIN="crates/target/${PROFILE}/qbz"
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INTERVAL="${INTERVAL:-2}"
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[[ -x "${BIN}" ]] || { echo "[qt-diag] no binary at ${BIN} — build first (./scripts/qt-run.sh NORUN=1)" >&2; exit 1; }
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# Refuse to produce a log that answers the wrong question. Offscreen forces
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# software, and a headless ssh session has no compositor to talk to — either
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# would make the backend line meaningless, which is the one line we are here for.
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if [[ "${QT_QPA_PLATFORM:-}" == offscreen ]]; then
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echo "[qt-diag] QT_QPA_PLATFORM=offscreen forces the software backend — that is the mistake this script exists to correct. Unset it." >&2
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exit 1
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fi
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if [[ "${UNAME_S}" != "Darwin" && -z "${DISPLAY:-}${WAYLAND_DISPLAY:-}" ]]; then
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echo "[qt-diag] no DISPLAY / WAYLAND_DISPLAY — run this from the machine's own graphical session, not over ssh." >&2
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exit 1
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fi
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stamp="$(date +%Y%m%d-%H%M%S)"
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host="$(hostname -s 2>/dev/null || hostname)"
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LOG="${PWD}/qt-diag-${host}-${stamp}.log"
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{
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echo "=============================================================="
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echo " QBZ Qt rendering diagnostic"
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echo " host : ${host}"
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echo " when : $(date '+%Y-%m-%d %H:%M:%S %Z')"
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echo " os : $(uname -srm)"
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[[ "${UNAME_S}" == "Darwin" ]] && echo " macos : $(sw_vers -productVersion)"
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echo " binary : ${BIN} ($(date -r "${BIN}" '+%Y-%m-%d %H:%M' 2>/dev/null || stat -c %y "${BIN}" 2>/dev/null))"
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echo " profile : ${PROFILE}"
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echo "=============================================================="
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echo
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echo "---- display ----"
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if [[ "${UNAME_S}" == "Darwin" ]]; then
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system_profiler SPDisplaysDataType 2>/dev/null | grep -iE 'resolution|ui looks like|chipset|vram|metal' || true
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else
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xrandr 2>/dev/null | grep -E ' connected|\*' || echo "(xrandr unavailable — wayland?)"
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echo "session type: ${XDG_SESSION_TYPE:-unknown}"
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fi
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echo
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echo "---- qt ----"
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(qmake6 -query QT_VERSION 2>/dev/null || /opt/homebrew/opt/qt/bin/qmake -query QT_VERSION 2>/dev/null || echo unknown) | sed 's/^/qt version: /'
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echo "effects modules present:"
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for d in /usr/lib64/qt6/qml /usr/lib/qt6/qml /opt/homebrew/share/qt/qml; do
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[[ -d "$d/QtQuick/Effects" ]] && echo " QtQuick.Effects -> $d"
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[[ -d "$d/Qt5Compat/GraphicalEffects" ]] && echo " Qt5Compat.GraphicalEffects -> $d"
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done
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echo "backend forced by env: QT_QUICK_BACKEND='${QT_QUICK_BACKEND:-}' QSG_RHI_BACKEND='${QSG_RHI_BACKEND:-}' QSG_RENDER_LOOP='${QSG_RENDER_LOOP:-}'"
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echo
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echo "---- app log (QSG_INFO + scenegraph/rhi categories) ----"
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} > "${LOG}"
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echo "[qt-diag] log -> ${LOG}"
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echo "[qt-diag] drive the app as described in this script's header, then close it normally."
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# The two lines that answer the question are 'Creating QRhi with backend X' and
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# 'Prefer software device: N'. The rhi/scenegraph categories carry them.
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QSG_INFO=1 \
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QT_LOGGING_RULES="qt.scenegraph.general=true;qt.rhi.general=true" \
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"./${BIN}" >> "${LOG}" 2>&1 &
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app_pid=$!
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# CPU sampler. ps reports a per-process percentage on both platforms; on macOS
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# it is a share of ONE core (so >100 is possible), same as Linux.
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samples="$(mktemp)"
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(
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while kill -0 "${app_pid}" 2>/dev/null; do
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cpu=$(ps -o %cpu= -p "${app_pid}" 2>/dev/null | tr -d ' ')
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rss=$(ps -o rss= -p "${app_pid}" 2>/dev/null | tr -d ' ')
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[[ -n "${cpu}" ]] && printf '%s %s %s\n' "$(date '+%H:%M:%S')" "${cpu}" "${rss:-0}" >> "${samples}"
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sleep "${INTERVAL}"
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done
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) &
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sampler=$!
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trap 'kill "${app_pid}" 2>/dev/null || true' INT TERM
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wait "${app_pid}" 2>/dev/null
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kill "${sampler}" 2>/dev/null || true
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wait "${sampler}" 2>/dev/null || true
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{
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echo
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echo "---- cpu samples (time, %cpu of one core, rss KB) ----"
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cat "${samples}" 2>/dev/null
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echo
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echo "---- cpu summary ----"
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awk '{n++; s+=$2; if($2>mx)mx=$2; if(n==1||$2<mn)mn=$2}
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END{ if(n) printf "samples=%d min=%.1f%% avg=%.1f%% max=%.1f%%\n", n, mn, s/n, mx;
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else print "(no samples — the process exited immediately)" }' "${samples}" 2>/dev/null
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echo
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echo "---- what to look for ----"
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echo " * 'Creating QRhi with backend <X>' -> OpenGL/Metal/Vulkan = GPU; 'software' = not."
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echo " * 'Prefer software device: 1' -> something asked for software explicitly."
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echo " * 'Animation Driver: using vsync' -> ms per frame; 5.56 = 180Hz, 10.0 = 100Hz."
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echo " * a max% that tracks the NPB Large window is the FFT spectrum band."
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} >> "${LOG}"
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rm -f "${samples}"
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echo
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echo "[qt-diag] done. Backend line:"
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grep -aE 'Creating QRhi|Prefer software|using vsync' "${LOG}" | sed 's/^/ /' || echo " (none found — did the window open?)"
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echo "[qt-diag] full log: ${LOG}"
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