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# Cube damage and layer ordering, revision 3
The revision 2 clearing fix remains in place. Revision 3 removes the continuous
redraw measures that previously concealed damage errors:
- Reuse cube-face textures and repaint their accumulated damage. Newly allocated
textures still receive a full repaint.
- Stop scheduling frames when the cube animation finishes. Child damage drives
updates at rest; an extra final animation frame paints the settled geometry.
- Remove duplicate whole-output damage during animation.
The cube now follows Wayfire's render-instruction contract. It skips empty
damage, translates damage into the same output-local coordinates as its render
target, limits background rendering to that damage, and scissors the cube's GL
draws and depth clear. Previously the background and cube could overwrite pixels
that were not scheduled to be repainted, including higher-layer contents.
Held-window overlays are inserted above the cube but below SCREENSAVER and LOCK.
Previously `add_front(scene_root, overlay)` put them above every normal layer.
The desktop sampler can now include those overlays in the desktop composition.
Scene rebuilds for held-window transitions, and whole-output damage when
activating/deactivating or pausing/resuming the cube, remain necessary. This is
not a claim that all full-output repaints can be removed: moving a 3D scene can
change any pixel on the output.
No public API or ABI changes; the subslot remains `0/0.11.screensaver1`.
Oledsaver 1.0.13 already requests the correct screensaver layer and needs no
renderer changes for this patch. See `tests/render-regression/README.md` for
isolated, reproducible checks.
## Revision 4: panels on empty workspaces and overlay ordering
The cube and its held-window overlay now sit below the OVERLAY layer (anchored
immediately above TOP). Native Wayland launchers such as Rofi remain above the
transformed desktop. Overlay surfaces are excluded from workspace streams so
they are not also composited into the cube background or textures.
Rotating a desktop panel changes which pass includes it, not its workspace
coordinates. Preserve the desktop-environment flag when scheduling and damaging
its render instances. This replicates Waybar into every workspace texture,
including empty neighboring faces, and updates each copy when the panel changes.
No public API or ABI changes; the subslot remains `0/0.11.screensaver1`.
The workspace-stream change lives in the compositor executable, so an existing
Wayfire session needs a logout/login to use it; restarting Waybar alone cannot
load the compositor fix.
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