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engine: complete portable glyph text backend

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gamer147
2026-07-30 19:47:21 -04:00
parent ef19ab79e0
commit d9f24c69ef
12 changed files with 619 additions and 840 deletions
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docs/remake-architecture-and-roadmap.md
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@@ -635,16 +635,17 @@ primitive, which cannot be made equivalent by choosing another embolden constant
the persisted backlog. The configured wait atlas now binds at op `0x212`'s handle, advances source cells
only on the configured frame boundary, participates in op-`0x20a` republication and HIDEWIN suspension,
and disappears when the wait service stops. The standalone Godot wait `TextureRect` and its raw-callback
visibility exception are gone. Exact History no longer enters the layout-keyed Label pool; that code and
the live/immediate Label pools remain solely as the explicit unavailable-rasterizer fallback until step 7
supplies the portable glyph backend. Focused lifecycle tests, all 579 engine tests, the exact History
visibility exception are gone. At this checkpoint exact History no longer entered the layout-keyed Label
pool; step 7 subsequently supplied the portable backend and removed every remaining gameplay Label pool.
Focused lifecycle tests, all 579 engine tests, the exact History
Godot self-test, and a real SC0000 Vulkan capture cover the retained path.
7. **Complete and select the portable backend.** Spike the smallest maintainable way to obtain portable
font masks/metrics (Godot/TextServer offscreen extraction versus a bounded FreeType-compatible adapter)
before choosing a dependency. Define face substitution and raster policy as profile/configuration data,
keep its output explicitly non-identical to GDI, and run the same layout/compositor tests. Retain a
development-only backend switch through acceptance; remove the old Label fallback only when both exact
Windows and portable startup/legibility gates pass.
7. **Complete and select the portable backend — completed 2026-07-30.** Godot's TextServer atlas is the
portable mask/metrics source, avoiding another native dependency. Profile data in
`godot/config/himegari-text-rendering.json` owns ordered Mincho/Gothic substitutions and bounded cache
sizes. `auto` selects exact GDI when its ACP-932 gate passes and otherwise selects the explicitly
non-pixel-exact Unicode backend; development runs can force either with `--text-backend`. Both modes pass
the same immediate/live/History retained-glyph self-test. Gameplay `Label` pools and surface-text overlay
projection are removed, so text always participates in the ordinary surface compositor.
**Acceptance gates:**