mirror of
https://github.com/IfcOpenShell/IfcOpenShell.git
synced 2026-08-28 07:49:59 +00:00
Dion Moult
ab99024307
Loading enough models drove the chunk pool to the driver's refusal point, after which the first click aborted: the pick attachments are allocated lazily, wgpu-native reported their OOM as a validation error nobody observed, and the invalid views reached wgpuQueueSubmit, which panics across the FFI boundary. Two policy defects compounding: the cache was allowed to take the last byte, and nothing but the pool's own growth was treated as fallible. GPU memory is now two tiers. Required allocations (per-pixel attachments, a model's metadata buffers, readback staging) are eager, deterministic and fallible; the chunk pool is an elastic cache that grows only to a budget and yields whenever a required allocation fails. - GpuBudget (pure, unit-tested): desktop derives the budget from the driver's free-memory report minus a reserve for the attachments at 4K; web keeps the wasm-heap cap; either lowers it on pressure. The budget's source differs per platform, the mechanism does not. - GpuAllocScope: the OOM/Validation error-scope dance in one place, synchronous on wgpu-native, provisional on Dawn-web. BufferPool's inline copy now uses it. - BufferPool::shrinkToCapacity releases whole sub-buffers newest-first after the owner empties them; growth clamps to the budget instead of overshooting. - ViewportCore::allocateRequired runs any required creation under a scope and, on failure, lowers the budget, evicts and releases cache sub-buffers, waits for the device to reclaim them, and retries until it fits or the cache is at its floor. Pick attachments are created with the other attachments in configureSurface; render() skips a frame rather than submit invalid views; a model whose buffers cannot fit is not loaded instead of aborting. Verified on a 4 GB GeForce: the pool clamps itself at the derived budget (256+256+67 MB for a 579 MB budget) and, in a standalone check against the real device, a pool grown to the driver's refusal point observes a failed required allocation, releases 320 MB and succeeds on retry. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
IfcOpenShell
IfcOpenShell is an open source (LGPL) software library for working with Industry Foundation Classes (IFC). Complete parsing support is provided for IFC2x3 TC1, IFC4 Add2 TC1, IFC4x1, IFC4x2, and IFC4x3 Add2. Extensive geometric support is implemented for the IFC releases IFC2x3 TC1 and IFC4 Add2 TC1. Extending with support for arbitrary IFC schemas is possible at compile-time when using C++ and at run-time when using Python.
In addition to a C++ and Python API, IfcOpenShell comes with an ecosystem of tools, notably including IfcConvert (an application to convert IFC models to other formats), Bonsai (an add-on to Blender providing a graphical IFC authoring platform), and many other libraries, CLI apps, and more. Support is also provided for auxiliary standards such as BCF and IDS.
For more information, see:
Development is sponsored through your generous donations!
Contents
| Name | Description | License | Service |
|---|---|---|---|
| bcf | Library to read and write BCF-XML and query OpenCDE BCF-API modules | LGPL-3.0-or-later |   |
| bonsai | Add-on to Blender providing a graphical native IFC authoring platform | GPL-3.0-or-later |    |
| bsdd | Library to query the bSDD API | LGPL-3.0-or-later |  |
| ifc2ca | Utility to convert IFC structural analysis models to Code_Aster | LGPL-3.0-or-later | |
| ifc4d | Convert to and from IFC and project management software | LGPL-3.0-or-later |  |
| ifc5d | Report and optimise cost information from IFC | LGPL-3.0-or-later |  |
| ifcbimtester | Wrapper for Gherkin based unit testing for IFC models | LGPL-3.0-or-later | |
| ifcblender | Historic Blender IFC import add-on | LGPL-3.0-or-later* | |
| ifccityjson | Convert CityJSON to IFC | LGPL-3.0-or-later |  |
| ifcclash | Clash detection library and CLI app | LGPL-3.0-or-later |  |
| ifcconvert | CLI app to convert IFC to many other formats | LGPL-3.0-or-later* |   |
| ifccsv | Library and CLI app to export and import schedules from IFC | LGPL-3.0-or-later |  |
| ifcdiff | Compare changes between IFC models | LGPL-3.0-or-later |  |
| ifcedit | CLI wrapper for ifcopenshell.api IFC model mutation functions | LGPL-3.0-or-later |  |
| ifcfm | Extract IFC data for FM handover requirements | LGPL-3.0-or-later |  |
| ifcmax | Historic extension for IFC support in 3DS Max | LGPL-3.0-or-later* | |
| ifcmcp | MCP server for querying and editing IFC building models | LGPL-3.0-or-later |  |
| ifcopenshell-python | Python library for IFC manipulation | LGPL-3.0-or-later* |         |
| ifcpatch | Utility to run pre-packaged scripts to manipulate IFCs | LGPL-3.0-or-later |  |
| ifcquery | CLI tool for querying and inspecting IFC building models | LGPL-3.0-or-later |  |
| ifcsverchok | Blender Add-on for visual node programming with IFC | GPL-3.0-or-later |  |
| ifctester | Library, CLI and webapp for IDS model auditing | LGPL-3.0-or-later |  |
The IfcOpenShell C++ codebase is split into multiple interal libraries:
| Name | Description | License |
|---|---|---|
| ifcgeom | Internal library for IfcOpenShell | LGPL-3.0-or-later* |
| ifcgeom_schema_agnostic | Internal library for IfcOpenShell | LGPL-3.0-or-later* |
| ifcgeomserver | Internal library for IfcOpenShell | LGPL-3.0-or-later* |
| ifcjni | Internal library for IfcOpenShell | LGPL-3.0-or-later* |
| ifcparse | Internal library for IfcOpenShell | LGPL-3.0-or-later* |
| ifcwrap | Internal library for IfcOpenShell | LGPL-3.0-or-later* |
| serializers | Internal library for IfcOpenShell | LGPL-3.0-or-later* |