Basis Universal v2.6 update

basisu_pack: a new command line tool is being added to the Basis Universal open source library, shipping in Jan. 2027. Real-time, high quality GPU texture format encoders for any platform, for virtually any GPU texture format: LDR, HDR, BC1-7, ASTC (all 14 block sizes for LDR, 2 block sizes for HDR), ETC1/2, PVRTC1 etc. - all using our own encoding tech. It writes .DDS, .KTX, .KTX2, and .ASTC.

We have the real-time analytical encoders (for transcoding purposes), so now we're going to expose them via API's and tooling. They don't need SIMD, yet many of them are faster than other older search-based SIMD encoder designs.

Also coming: Official Python wheels for several platforms, transcoding performance increases, and large XUASTC compression ratio improvements.

Our CLI's are shipped as both native or as secure WASM WASI executables.