Audio reactive live background#2449
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weissi1994 wants to merge 2 commits intonoctalia-dev:mainfrom
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added 2 commits
April 12, 2026 16:28
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fix
fix
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flake.lock: Update
Flake lock file updates:
• Updated input 'projectM-waylivepaper':
'git+ssh://git@git.n0de.biz/daniel/projectM-waylivepaper?ref=main&rev=2bbec2cf09cb1c92c6ef87bbe39e25f35f8a1a42' (2026-04-10)
→ 'git+ssh://git@git.n0de.biz/daniel/projectM-waylivepaper?ref=main&rev=79e6d7a3ee47f0f6bca306e9eb215fdc48627114' (2026-04-10)
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flake.lock: Update
Flake lock file updates:
• Updated input 'projectM-waylivepaper':
'git+ssh://git@git.n0de.biz/daniel/projectM-waylivepaper?ref=main&rev=79e6d7a3ee47f0f6bca306e9eb215fdc48627114' (2026-04-10)
→ 'git+ssh://git@git.n0de.biz/daniel/projectM-waylivepaper?ref=main&rev=e3b4a41dd7f484fc7c95afbdd392a3921a5a80e8' (2026-04-10)
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flake.lock: Update
Flake lock file updates:
• Updated input 'projectM-waylivepaper':
'git+ssh://git@git.n0de.biz/daniel/projectM-waylivepaper?ref=main&rev=e3b4a41dd7f484fc7c95afbdd392a3921a5a80e8' (2026-04-10)
→ 'git+ssh://git@git.n0de.biz/daniel/projectM-waylivepaper?ref=main&rev=f42d7e2d608531244a6e7b207ec09b93cd01baf6' (2026-04-10)
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flake.lock: Update
Flake lock file updates:
• Updated input 'projectM-waylivepaper':
'git+ssh://git@git.n0de.biz/daniel/projectM-waylivepaper?ref=main&rev=f42d7e2d608531244a6e7b207ec09b93cd01baf6' (2026-04-10)
→ 'git+ssh://git@git.n0de.biz/daniel/projectM-waylivepaper?ref=main&rev=2ab9b5fe39054d8b3023e0254a875b20cb058595' (2026-04-10)
upd
flake.lock: Update
Flake lock file updates:
• Updated input 'projectM-waylivepaper':
'git+ssh://git@git.n0de.biz/daniel/projectM-waylivepaper?ref=main&rev=2ab9b5fe39054d8b3023e0254a875b20cb058595' (2026-04-10)
→ 'git+ssh://git@git.n0de.biz/daniel/projectM-waylivepaper?ref=main&rev=62985279520854050aaafe06055e38fb2f122a0e' (2026-04-10)
upd
flake.lock: Update
Flake lock file updates:
• Updated input 'projectM-waylivepaper':
'git+ssh://git@git.n0de.biz/daniel/projectM-waylivepaper?ref=main&rev=62985279520854050aaafe06055e38fb2f122a0e' (2026-04-10)
→ 'git+ssh://git@git.n0de.biz/daniel/projectM-waylivepaper?ref=main&rev=840a70049dc3af1cbed88181b27df779ed2140bb' (2026-04-10)
flake.lock: Update
Flake lock file updates:
• Updated input 'projectM-waylivepaper':
'git+ssh://git@git.n0de.biz/daniel/projectM-waylivepaper?ref=main&rev=840a70049dc3af1cbed88181b27df779ed2140bb' (2026-04-10)
→ 'git+ssh://git@git.n0de.biz/daniel/projectM-waylivepaper?ref=main&rev=70e34b8504de5d2b5bec96a9908d8bd82ca2097e' (2026-04-10)
upd
flake.lock: Update
Flake lock file updates:
• Updated input 'projectM-waylivepaper':
'git+ssh://git@git.n0de.biz/daniel/projectM-waylivepaper?ref=main&rev=70e34b8504de5d2b5bec96a9908d8bd82ca2097e' (2026-04-10)
→ 'git+ssh://git@git.n0de.biz/daniel/projectM-waylivepaper?ref=main&rev=a3f89e57d7f3962a33a0bccc4edc6c51c9387d0c' (2026-04-10)
jpeg approach
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flake.lock: Update
Flake lock file updates:
• Updated input 'projectM-waylivepaper':
'git+ssh://git@git.n0de.biz/daniel/projectM-waylivepaper?ref=main&rev=a3f89e57d7f3962a33a0bccc4edc6c51c9387d0c' (2026-04-10)
→ 'git+ssh://git@git.n0de.biz/daniel/projectM-waylivepaper?ref=main&rev=53e618139db46d54365b69edf8af5533b5dbd3e8' (2026-04-11)
upd
upd
flake.lock: Update
Flake lock file updates:
• Updated input 'projectM-waylivepaper':
'git+ssh://git@git.n0de.biz/daniel/projectM-waylivepaper?ref=main&rev=53e618139db46d54365b69edf8af5533b5dbd3e8' (2026-04-11)
→ 'git+ssh://git@git.n0de.biz/daniel/projectM-waylivepaper?ref=main&rev=84caecdbca71ae9b6f32cfa313788b61f43d8757' (2026-04-11)
flake.lock: Update
Flake lock file updates:
• Updated input 'projectM-waylivepaper':
'git+ssh://git@git.n0de.biz/daniel/projectM-waylivepaper?ref=main&rev=84caecdbca71ae9b6f32cfa313788b61f43d8757' (2026-04-11)
→ 'git+ssh://git@git.n0de.biz/daniel/projectM-waylivepaper?ref=main&rev=86211df4e01ca86e9d121b92ff294477f22642fd' (2026-04-11)
flake.lock: Update
Flake lock file updates:
• Updated input 'projectM-waylivepaper':
'git+ssh://git@git.n0de.biz/daniel/projectM-waylivepaper?ref=main&rev=86211df4e01ca86e9d121b92ff294477f22642fd' (2026-04-11)
→ 'git+ssh://git@git.n0de.biz/daniel/projectM-waylivepaper?ref=main&rev=a9d7a1061a36c5cbb1bbcbec41c2a4289275b769' (2026-04-11)
upd
upd
upd
flake.lock: Update
Flake lock file updates:
• Updated input 'projectM-waylivepaper':
'git+ssh://git@git.n0de.biz/daniel/projectM-waylivepaper?ref=main&rev=a9d7a1061a36c5cbb1bbcbec41c2a4289275b769' (2026-04-11)
→ 'git+ssh://git@git.n0de.biz/daniel/projectM-waylivepaper?ref=main&rev=c99d0faa586f06744491d54d262f1b18b9b5a0cb' (2026-04-11)
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fix: use smooth_transition=false for all preset loads
projectm_load_preset_file with smooth_transition=true on a freshly
created instance starts a soft blend from the nonexistent previous
preset. That blend stays stuck on the empty side and renders at the
default ~512x512 size until a second preset load displaces it — the
exact cause of the black bars at top/right until next-track.
Hard load (false) activates the preset immediately at the correct
window size, matching the reference waylivepaper implementation.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
fix: remove warm-up, load preset before first render_frame (reference pattern)
The warm-up render was backwards: we were calling render_frame() BEFORE
load_preset_file(), then loading the preset. The reference implementation
(waylivepaper) does the opposite:
set_window_size(W, H)
load_preset_file(preset, false) ← before any render_frame
render_frame() ← first render, correct size
A hard load (smooth=false) causes projectM to initialise the preset at
the stored window size immediately, without needing a prior throw-away
frame. Calling render_frame() first was causing projectM to run its
default visualisation at the internal 512×512 default size.
Additional fixes:
- Track m_loadedPreset; on FBO resize (createFramebufferObject called
with new size), force-reload the current preset at the new dimensions.
- Hold back rendering (fill black) until the first preset is loaded, so
the 512×512 default visualisation is never shown to the user.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
debug: log FBO/init sizes; use actual FBO dims for initProjectM
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
fix: render projectM at logical pixels, blit up to Qt device-pixel FBO
The Qt QQuickFramebufferObject is created at device pixels (logical × dpr),
but FBO 0 (the EGL window surface) under Wayland fractional scaling is at
logical pixels. We were rendering projectM at the device-pixel viewport
(3840×2560 in the logs), but FBO 0 only holds 2880×1920 — OpenGL clips the
render to the lower-left logical area, causing the "visualization in the
lower-left with black bars at top/right" symptom.
Fix:
- Sync devicePixelRatio from the QQuickWindow in synchronize().
- Compute logical size: pm_w/h = round(fbo_w/h / dpr).
- Init projectM, set window size, and set glViewport at logical size.
- Blit from FBO 0 (pm_w×pm_h) → Qt FBO (w×h) with GL_LINEAR upscale.
- createFramebufferObject: track m_pmSize at logical size; reload preset
only when the logical size actually changes.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
fix: add QQuickWindow include for devicePixelRatio
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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review
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…into livepaper
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Motivation
It adds a audio reactive live desktop & lockscreen wallpaper backed by projectM which monitors the active pulseaudio output (with microphone fallback).
Type of Change
Related Issue
Testing
Describe how you tested your changes and mark the relevant items.
Screenshots / Videos
output_720p.mp4
Checklist
Additional Notes
This Draft PR is primarily to act as POC implementation (generated with the help of ai) to check if the community is interested in this feature in general.
Most if it likely needs to be rewritten and/or redesigned entirely, would appreciate some guidance here.