core: span allocation with shared free list and geometric growth

Amp-Thread-ID: https://ampcode.com/threads/T-01a0b2dd-db32-712d-99ce-12ce4a86d979 Co-authored-by: Heaust Azure <heaust.azure@gmail.com>
2026-09-18 05:26:26 +00:00
parent e7546e4b78
commit dda602c4a2
7 changed files with 199 additions and 91 deletions
@@ -8,8 +8,8 @@ All fields below are top-level beside `type` and `request`. Except for `init` an
 | `create-rows` | `name`, `rows`, `stride`, `format` | — | descriptor | Nonempty name; rows > 0; stride ≥16 and multiple of 16; format f32/u32/i32. Existing name may only retain format/stride and grow. |
 | `create-rows-batch` | `rows: Array<{name,rows,stride,format}>` | — | descriptor array in input order | Nonempty. Sequential, **not transactional**: earlier creations can survive a later failure. Active GPU resources refresh once after successful batch. |
 | `delete-rows` | `name` | — | `undefined` | Not `signals`, not active slots, not referenced by active graph. |
-| `allocate-object` | `name` | — | `{ id, rows: descriptor }` | Not `signals`; may grow/relocate. |
-| `delete-object` | `name`, `id: u32` | — | `undefined` | ID must currently be active; row is zeroed. |
+| `allocate-object` | `name`, `count: u32 = 1` | — | `{ id, rows: descriptor }` | Not `signals`; `count` > 0; reserves `count` contiguous rows starting at `id`; may grow/relocate. |
+| `delete-object` | `name`, `id: u32` | — | `undefined` | ID must be the first row of an active span; the whole span is zeroed. |
 | `compile-graph` | `serialized: string` | — | graph ID string | Parses and stores; same ID replaces previously stored graph. Does not activate it. |
 | `switch-loadout` | `id` | — | `undefined` | Builds GPU resources and activates stored graph. Clears `bundleDirty`, sets `sabDirty`. |
 | `upload-texture` | `name`, `mipLevel: u32`, `image: ImageBitmap` | `[image]` | `undefined` | Uploads immediately if active graph has the texture and caches source for future switches. Source extent must fit destination/mip. Sets dirty. |