https://huggingface.co/kimjunhan/vkgs-sim/resolve/main/third_party/ktx-src/external/astc-encoder/Test/Data/empty.unk
hf download hf://kimjunhan/vkgs-sim/third_party/ktx-src/external/astc-encoder/Test/Data/empty.unk
curl -L -o empty.unk https://huggingface.co/kimjunhan/vkgs-sim/resolve/main/third_party/ktx-src/external/astc-encoder/Test/Data/empty.unk
