It is a very impressive pice of technology. The crazy part is the decompressor. It is ~200 bytes of handwritten x86 assembler, tuned for code smallness over 15

It is a very impressive pice of technology. The crazy part is the decompressor. It is ~200 bytes of handwritten x86 assembler, tuned for code smallness over 15 years. If you go to the release page, you see every time the shaved one or two bytes of of it. It’s also interesting how compression is done. They do only care about output size, not compression time. So it is possible that you just wrote a couple of KB of GLSL and the compressor takes 12 hours to squeeze that into your 4k demo.