basis_universal v2_0_1

[arpu]

Hey,

looks like basisu v2_0_1 was released with
XUASTC LDR 4x4-12x12 (all 14 standard ASTC block sizes, "GPU Photo LDR/SDR") support, will this be supported by meshoptimzer? at the moment i see this brnach is ised https://github.com/zeux/basis_universal/tree/gltfpack

[zeux]

So these two are a little separate:

1. XUASTC is a new format that’s not supported by the existing GLTF extension. I’d assume a new extension needs to be made; if there’s a new KHR extension I can support it
2. gltfpack uses a special branch that includes an optimization that makes texture compression in glTF context much faster. Unfortunately that change still isn’t included in their master branch despite me submitting a PR 3 years ago. I’ll take a look at merging XUASTC changes into my fork; it’s quite unfortunate that I have to maintain it.