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UI: keep live previews updating during rapid edits

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cdinhoo
2026-10-09 19:06:17 +03:00
parent f08d090cd8
commit e445877494
5 changed files with 262 additions and 11 deletions
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docs/architecture.md
+10 -6
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@@ -164,12 +164,16 @@ its evaluated inputs, excluding the transform. Static and transform-only layers
editing one layer re-renders only that layer. Effects that read the clock directly are declared in
`effects::TIME_DEPENDENT`, and a test checks every registered effect against that list.
The viewer's **RAM preview** (`ui-egui/src/frames.rs`) keeps finished frames keyed by project
revision, comp, frame, scale, 3D view / region of interest and a hash of the other render
options (Draft / Fast Previews, shadows, nested switches), so frames rendered under other
options are never shown. When the budget (Settings ▸ Memory & CPU) is full the least recently
shown frames go first, and frames of an older revision are dropped as soon as the project
changes. The timeline's green bar counts the frames of exactly what the viewer shows.
The viewer's **RAM preview** (`ui-egui/src/frames.rs`) keeps finished frames keyed by comp
content, frame, scale, 3D view / region of interest and a hash of the other render options
(Draft / Fast Previews, shadows, nested switches). Edits preserve unaffected comps' frames,
and undo can reuse earlier content. During rapid edits at the same time and view, the viewer
shows the newest completed revision while the exact requested revision renders; out-of-order
completions cannot move it backwards. This avoids freezing until a slider or layer drag stops.
Frames at other times or with other render options are never substituted. Obsolete queued jobs
are dropped; running jobs finish into the cache. When the budget (Settings ▸ Memory & CPU) is
full the least recently shown frames go first. The timeline's green bar counts cached frames
of the current content and viewer settings.
A persistent **disk cache** (`render::disk_cache`, Settings ▸ Media & Disk Cache) backs both
the layer cache and the viewer's RAM preview: layer buffers that were slow to render and every