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This is not a bug and rather a current limitation - you can pass -tc to recompress source textures if they are present. If KHR_texture_basisu is a required extension, gltfpack currently will refuse to process the file, because it assumes the role of a tool that converts a "vanilla" glTF file (that doesn't use various compression extensions) to an optimized one (that might).
For context, our use case was to use gltf-transform (or custom tool) for compression since it gave us a bit more flexibility there and gltfpack for geometry.
gltf-transform offers more granularity and more options for texture processing; we want to be able to resize certain class of textures and also have a bit more control over compression parameters.
Running
gltfpack
on a file already using theKHR_textures_basisu
extension removes all traces of the extension in the output fileThe text was updated successfully, but these errors were encountered: