robtfm b30ff2ab76 allow asset loader pre-registration (#9429) ... # Objective - When loading gltf files during app creation (for example using a FromWorld impl and adding that as a resource), no loader was found. - As the gltf loader can load compressed formats, it needs to know what the GPU supports so it's not available at app creation time. ## Solution alternative to #9426 - add functionality to preregister the loader. loading assets with matching extensions will block until a real loader is registered. - preregister "gltf" and "glb". - prereigster image formats. the way this is set up, if a set of extensions are all registered with a single preregistration call, then later a loader is added that matches some of the extensions, assets using the remaining extensions will then fail. i think that should work well for image formats that we don't know are supported until later.		2023-08-14 21:27:51 +00:00
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lib.rs	allow asset loader pre-registration (#9429)	2023-08-14 21:27:51 +00:00
loader.rs	Add GltfLoader::new. (#9120)	2023-07-13 23:54:59 +00:00
vertex_attributes.rs	Add support for custom glTF vertex attributes. (#5370)	2023-04-24 14:20:13 +00:00