Tracker: glTF Support

[ibgreen]

Background

v7.2/7.3 Documented glTF API and loaders.gl integration

See discussion in #1150

• Documented API for "loading" glTF files.
• Easy way to create a scenegraph from a url
• Figure out how to map animations, multiple scenegraphs etc.
• Update examples in deck.gl and loaders.gl

v8.x Standards compliant glTF support

• Support full animation system, weights, joints, skins etc.

• Further Scenegraph Refinements (Frustum Culling, Depth Sorting, Geometry-based Picking...)

• Support for Cameras

• Support for glTF Light extension KHR_lights_punctual

• Separate Model from Scenegraph

• Add Mesh node to Scenegraph that can hold a Model (@ibgreen/@georgios-uber)

• Implement Composite Geometry support in Mesh P2 (@ibgreen/@georgios-uber)

• See also Tracker: Shadertools #979 for transpiler improvements that would help glTF (transpile main shader)

v7.0 Experimental/partial glTF Support

• Doc updates (New classes / What's New)
• Interoperability testing (test with more glTF models)
• Integrate PBR Rendering with Lighting System (@georgios-uber)
• Implement PBR rendering based on Material System (@georgios-uber)
• Implement Extensible Material System (@jianhuang01)
• Test, debug, fix glTFInstantiator against the Khronos reference models (@georgios-uber)
• Basic glTFInstantiator class that maps loaded glTG tree to luma scenegraph (@ibgreen, @georgios-uber)
• Improved support for interleaved attributes (Add Accessor.buffer field) (@ibgreen) Add support for Accessor.buffer #869
• Add a parser for glTF formatted files, building on existing GLBLoader (in loaders.gl)
• Support non-GLTF models (e.g. meshes/scenegraphs from loaders.gl)
• RFC