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glTF 2.0 at a glance
glTF 2.0
glTF emerged from Khronos as a web and engine-friendly counterpart to heavier exchange formats, and version 2.0 became the point where physically based materials and richer runtime interoperability made it a common default for modern 3D delivery.
BREP at a glance
BREP
Boundary representation became a core idea in 1970s and 1980s solid modeling, and Open CASCADE's .brep files reflect that tradition by serializing exact topological and geometric entities for native CAD workflows.
Format comparison
| Feature | glTF 2.0 | BREP |
|---|---|---|
| File type | Not available | Not available |
| Extensions |
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| MIME type |
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| Compression / quality | Not available | Not available |
| File size characteristics | Not available | Not available |
| Compatibility | Not available | Not available |
| Editability | Not available | Not available |
| Created year | Not available | Not available |
| Inventor | Not available | Not available |
| Status | Not available | Not available |
| Transparency | Not available | Not available |
| Animation | Not available | Not available |
| Primary use cases |
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| Common software |
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| Archival suitability | Not available | Not available |
| Metadata handling | Not available | Not available |
| Delivery profile | Not available | Not available |
| Workflow fit | Not available | Not available |
| Layer support | Not available | Not available |
| Vector scaling | Not available | Not available |
| Structured data | Not available | Not available |
When to use each format
When to use glTF 2.0
- design authoring
- review handoff
- manufacturing exchange
- Designed for efficient runtime loading rather than only archival exchange.
When to use BREP
- design authoring
- review handoff
- manufacturing exchange
- Preserves exact geometry and topology for solids, shells, faces, edges, and vertices.
FAQs
Why convert glTF 2.0 to BREP?
Choose BREP as target when solid model exchange between OpenCASCADE-based CAD applications, engineering analysis preparation, and BREP-to-mesh conversion pipelines.
What changes when converting glTF 2.0 to BREP?
Solid model exchange between OpenCASCADE-based CAD applications, engineering analysis preparation, and BREP-to-mesh conversion pipelines.
What should I review after converting glTF 2.0 to BREP?
After conversion, review these destination checks: Open converted output in Open CASCADE and verify behavior on real samples; Compare output against the expected precise quality profile; Much less universal than exchange standards such as STEP or mesh formats such as STL and OBJ.
How can I keep quality stable in glTF 2.0 to BREP conversion?
Run representative samples, keep settings deterministic, and monitor these risks: Strongly coupled to CAD-kernel concepts that many lightweight viewers do not implement; Much less universal than exchange standards such as STEP or mesh formats such as STL and OBJ; Validate destination compatibility before large-batch conversion.