glTF Writer
| gl Transmission Format | |
| File Extension | glTF, GLB |
| Supported Versions | 2.0 |
| Platforms | |
| Tessellation | |
| B-rep | N/A |
| PMI | N/A |
| Assembly | N/A |
| Views | N/A |
The glTF (GL Transmission Format) file format was created by the Khronos Group in 2015. It is an open standard for 3D scenes and models, designed to be efficient and widely supported across platforms.
The file extensions that you can create when you export to glTF are
- .gltf
- .glb
HOOPS Exchange geometry access for glTF includes:
- Tessellation: Can be written by HOOPS Exchange for visualization.
- B-rep: This format does not support B-rep
Physically-Based Rendering Material
As of version 2019 HOOPS Exchange now supports physically based rendering (PBR) materials with A3DGraphMaterialData structure. PBR related information are read from glTF formats.
Miscellaneous
Supported
- Version 2.0 files only (tinygltf limitation; only “asset” data is correctly parsed from 1.0 files)
- Vertex position, normal, color, texture coordinate sets 0 and 1
- Triangles
- Full texture support and material data: normal, occlusion, emissive
- Physically Based Rendering (PBR) textures and constants: base color, metallness, roughness
- Texture file formats: JPEG, PNG, BMP, GIF (handled by tinygltf)
- Cameras
Unsupported
- Version 1.0 files
- Vertex tangents
- Animations
- Skins
- Extensions
- Shaders
- Sparse accessors (currently not supported by tinygltf)
- Byte-swapping for Big-Endian platforms
Assembly
This concept is not supported by glTF.
B-rep
This concept is not supported by glTF.
Views
This concept is not supported by glTF.
