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Add support for some gltf extensions and better multi-object updates

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Yeicor
2024-03-28 19:12:21 +01:00
parent 7196fb2f32
commit 9afa2e5786
7 changed files with 71 additions and 26 deletions
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27
frontend/misc/gltf.ts
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@@ -21,7 +21,32 @@ export async function mergePartial(url: string, name: string, document: Document
networkFinished();
// Load the new document
let newDoc = await io.readBinary(new Uint8Array(buffer));
let newDoc = null;
let alreadyTried: { [name: string]: boolean } = {}
while (newDoc == null) { // Retry adding extensions as required until the document is loaded
try { // Try to load fast if no extensions are used
newDoc = await io.readBinary(new Uint8Array(buffer));
} catch (e) { // Fallback to wait for download and register big extensions
if (e instanceof Error && e.message.toLowerCase().includes("khr_draco_mesh_compression")) {
if (alreadyTried["draco"]) throw e; else alreadyTried["draco"] = true;
// WARNING: Draco decompression on web is really slow for non-trivial models! (it should work?)
let {KHRDracoMeshCompression} = await import("@gltf-transform/extensions")
let dracoDecoderWeb = await import("three/examples/jsm/libs/draco/draco_decoder.js");
let dracoEncoderWeb = await import("three/examples/jsm/libs/draco/draco_encoder.js");
io.registerExtensions([KHRDracoMeshCompression])
.registerDependencies({
'draco3d.decoder': await dracoDecoderWeb.default({}),
'draco3d.encoder': await dracoEncoderWeb.default({})
});
} else if (e instanceof Error && e.message.toLowerCase().includes("ext_texture_webp")) {
if (alreadyTried["webp"]) throw e; else alreadyTried["webp"] = true;
let {EXTTextureWebP} = await import("@gltf-transform/extensions")
io.registerExtensions([EXTTextureWebP]);
} else { // TODO: Add more extensions as required
throw e;
}
}
}
// Remove any previous model with the same name
await document.transform(dropByName(name));