Download Sponza Base Scene and Colorful Curtains.
Extract the files into ./assets/main_sponza/ and ./assets/PKG_A_Curtains/
No GI, just aiming lights where there should be light.
To optionally convert the textures to KTX2 use: cargo run -- --convert. You need kram in your path to do this. It will convert all the textures to BC7 KTX2 zstd 0 using available_parallelism() and update the gltf files to use the KTX2 textures.