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TASK-43: viewtop is the session compositor

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greetd launches it, Hyprland does not run, the shell's whole surface tree
composites on it. Points at the session record in the viewtop repo rather
than restating it here.

Steps 1-2 of the build order are done and step 3 is half done; the live
gap list lives with the code.
This commit is contained in:
Fimeg 2026-08-02 14:01:58 -04:00
commit e46c6588c2
1 changed files with 25 additions and 6 deletions
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31
docs/tasks/43-viewtop-compositor.md
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@ -1,10 +1,16 @@
# TASK 43 — viewtop: the Souveraine compositor
**Status:** touch served 2026-08-02, unexercised on hardware. Next lane is KMS
on device. **Size:** several sessions, one lane each. **Repo:**
`~/Projects/souveraine-viewtop`
(`10.10.20.120:4455/Fimeg/souveraine-viewtop`), head `458a354` = `origin/main`
2026-08-02, CI green on all six gates.
**Status: it is the session compositor, 2026-08-02.** greetd launches it,
Hyprland is not running, the shell's whole surface tree composites on it, and
Firefox ran well enough to drive a Claude session from. **Size:** several
sessions, one lane each. **Repo:** `~/Projects/souveraine-viewtop`
(`10.10.20.120:4455/Fimeg/souveraine-viewtop`), head `bceb0ac` = `origin/main`
2026-08-02.
**Read `docs/SESSION-2026-08-02.md` in that repo first.** It is the record of
the day this became real: five bugs only hardware could find, two upstream
smithay patches, and the exact things still missing. This file is the task; that
file is why the task looks the way it does now.
## Goal
@ -78,7 +84,20 @@ whose only input is the panel.
(`fbo_with_frame_info_callback` + buffer age + vsync), not on preference.
`wire` is a vocabulary over a platform channel, not IPC.
## What to build, in order
## What to build, in order — refreshed 2026-08-02
Steps 1 and 2 below are done: the Smithay frontend serves 23 globals, the gate
is wired at input and disclosure, and `ext-session-lock-v1` has carried the real
two-client handoff on hardware including adoption. Step 3's DRM/KMS half is
done and running; the arm64 engine is not. Step 4 is untouched.
The live list is in `souveraine-viewtop/docs/SESSION-2026-08-02.md` §"What is
missing". Shortest form, by what blocks daily use: scaling (everything renders
tiny), screen capture (written, unmerged), `furniture_at` returning `None` (the
pill cannot be addressed), and no `ToCompositor` dispatch (the OSK and pill
hacks cannot be deleted until there is one).
## The original plan, for context
1. ~~**Smithay frontend.**~~ Done. `wl_compositor`, xdg-shell, layer-shell,
seat with keyboard/pointer/touch, primary selection + wlr data-control.