perf(gjs): bake map previews off-frame through a queue#215
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The ported worlds have 100k+ tiles; the old path painted every tile as a clipped GSK node in the widget snapshot AND rebuilt the same node tree for the bake — millions of GI calls on the main thread, twice, for thumbnails whose tiles end up ~1.4px. - never paint tiles in vfunc_snapshot: accent + room colour until the bake lands, then the texture (O(1)) - module-wide bake queue, one bake per idle at idle priority, so 19 atlas cards become short steps between frames - LRU cache (48 textures) keyed by a map-content fingerprint — atlas re-entry reuses textures, edits re-bake exactly the maps that changed; welcome thumbnails serve the cached texture instantly and refresh in the background - reuse the Graphene temps in the per-tile loop and drop the op list once baked (six-figure object arrays per big map)
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The ported worlds have 100k+ tiles; the old path painted every tile
as a clipped GSK node in the widget snapshot AND rebuilt the same
node tree for the bake — millions of GI calls on the main thread,
twice, for thumbnails whose tiles end up ~1.4px.
the bake lands, then the texture (O(1))
19 atlas cards become short steps between frames
atlas re-entry reuses textures, edits re-bake exactly the maps
that changed; welcome thumbnails serve the cached texture
instantly and refresh in the background
list once baked (six-figure object arrays per big map)