Project Overview: glTF Sample Models
The glTF Sample Models project provided an essential collection of 3D models, known as sample models, for users exploring the glTF 2.0 specification. This initiative was hosted and managed by the Khronos Group, aiming to support the wider adoption and understanding of the glTF format. However, the project repository has since been archived, with its activities now moved to a new repository titled glTF-Sample-Assets. Existing issues and pull requests have been addressed and closed, but any new interactions should be directed to the new repository.
Understanding glTF and Its Formats
The sample models were available in various glTF 2.0 formats, each designed for specific needs:
-
glTF with Separate Resources: These files are saved in the
.gltfformat, accompanied by separate files such as.binfor geometry and animations or image files in.jpgor.pngformats. This setup allows easy examination of each component but requires that all parts remain together to function. -
glTF with Embedded Resources: Here, data is embedded within the
.gltffile using Data URIs. Although this format is generally larger, it offers certain conveniences, like requiring only a single file for viewing and sharing. -
Binary glTF (
.glb): This is a more compact and all-encompassing format where all data, including textures and meshes, is bundled into one.glbfile, simplifying shareability and storage.
Accessibility and Contributions
Sample models are pivotal for testing and showcasing the versatility of the glTF ecosystem. The project encouraged contributions from users to enhance this collection further, promoting a robust digital 3D modeling environment. Contributors could submit models following specific guidelines, ensuring each submission contained multiple versions of the model, a visual preview in the form of a screenshot, and a detailed README.md file outlining the model details and licensing terms.
Licensing advice suggested the use of permissive licenses like the Creative Commons Attribution 4.0 International License to allow free use and adaptation by others.
Accessing GLUT Models
Users can access various platforms offering 3D models in glTF formats. Sites like Sketchfab, Poimandres Market, and Poly Haven include functionalities to download or convert 3D assets into the glTF format, making it easier to work with high-quality models efficiently.
Additionally, the glTF Asset Generator by the Khronos Group itself provides numerous test models, which are excellent for developers needing comprehensive examples for glTF specifications.
Broader Resources
For more glTF models, users can explore other repositories and platforms like Cesium's collection of demo and unit test models, Flightradar24’s aircraft models, Kenney’s themed low-poly assets, and the Smithsonian's open-access 3D models. These diverse resources further enrich the potential and usability of glTF across different fields and applications in digital modeling.
By providing a comprehensive yet accessible approach to 3D modeling, these models support both amateurs and professionals in experimenting with and utilizing the full capabilities of glTF technology.