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perf(xref): fix O(n²) AcDs parse and skip host re-tessellation

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Opening a drawing that xrefs several 3D-heavy DWGs (e.g. Clinic.dwg with
5 discipline files) took ~137s, effectively all of it inside the DWG
parser's AcDs SAB blob extraction.

Bump the acadrust pin to ceef045, which bounds the AcDs end-marker search
so a missing marker family no longer scans the whole buffer per record.
Total xref resolve for Clinic.dwg drops from ~97s to ~4s.

Also make the post-xref mesh pass incremental: the host solids were
already tessellated by the background loader and the merge assigns fresh
handles to every imported entity, so `populate_missing_meshes_from_document`
keeps the cached host meshes and tessellates only the merged xref solids
instead of clearing and rebuilding the whole document.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Hakan Seven 2026-07-05 00:38:38 +03:00
commit 13de968ee9
3 changed files with 37 additions and 7 deletions
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Cargo.lock generated
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@ -71,7 +71,7 @@ checksum = "366ffbaa4442f4684d91e2cd7c5ea7c4ed8add41959a31447066e279e432b618"
[[package]]
name = "acadrust"
version = "0.4.0"
source = "git+https://github.com/HakanSeven12/acadrust?branch=main#f76e41adb47b09c66b3032d3727468e4303bcaf0"
source = "git+https://github.com/HakanSeven12/acadrust?branch=main#ceef045ed9fe4658dfb1ad488fe12f65c0311135"
dependencies = [
"ahash 0.8.12",
"anyhow",