--- title: "Introducing glTF 2.1 with Complex Scenes" url: https://daily.dev/posts/introducing-gltf-2-1-with-complex-scenes-rweqetez9 source_url: https://www.khronos.org/blog/introducing-gltf-2.1-with-complex-scenes type: article source: "Khronos" published: 2026-06-11T13:22:04.341Z updated: 2026-06-11T13:22:33.526Z tags: ["3d"] reading_time: 18 upvotes: 0 comments: 0 language: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Introducing glTF 2.1 with Complex Scenes **[Khronos](https://daily.dev/sources/khronos)** · 18 min read · 0 upvotes · 0 comments ## Summary Khronos announces glTF 2.1, a backward-compatible revision of the 3D format specification focused on large, composed scenes. Key additions include External Assets (referencing and instantiating other glTF files), Packaging (self-contained multi-file bundles), Shapes (implicit geometric primitives), Bounding Volume Hierarchies, and Unified File References via a new top-level `files` array. Quality-of-life improvements include thumbnail support, a 64-bit GLB format lifting the 4 GiB size cap, promoted extension functionality (WebP, emissive strength, mesh quantization, node visibility), non-sequential attribute indices, expanded accessor component types (DOUBLE, HALF_FLOAT, INT64), and Unique IDs for stable cross-file object addressing. The multiple-scenes pattern is formally deprecated. The spec is being developed openly on GitHub with community input, and a live discussion is planned at SIGGRAPH 2026. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Khronos Releases glTF 2.1 To Make This 3D Asset Standard Work Well For Large Scenes](https://daily.dev/posts/khronos-releases-gltf-2-1-to-make-this-3d-asset-standard-work-well-for-large-scenes-hmxnejge8) · Phoronix · 1 upvotes · 0 comments - [glTF 2.1—beyond single 3D assets – Jon Peddie Research](https://daily.dev/posts/gltf-2-1-beyond-single-3d-assets-jon-peddie-research-v3sxnkw2h) · Khronos · 0 upvotes · 0 comments - [glTF Interactivity Extension Submitted for Ratification](https://daily.dev/posts/gltf-interactivity-extension-submitted-for-ratification-xvtct4kpe) · Khronos · 0 upvotes · 0 comments --- Tags: [#3d](https://daily.dev/tags/3d) [View this post on daily.dev](https://daily.dev/posts/introducing-gltf-2-1-with-complex-scenes-rweqetez9)