Update README with KTX2 file format details

Clarify compatibility with previous KTX2 files and XUASTC LDR embedding.
This commit is contained in:
Rich Geldreich
2026-03-06 23:35:47 -05:00
committed by GitHub
parent 3a22a2bf59
commit 41a0949db2

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@@ -506,6 +506,8 @@ KTX2 Support Status
Note as of March 2026 we are working with Khronos on the exact details of how we embed XUASTC LDR supercompressed texture data into the KTX2 file format. KTX2 texture files using our previous codecs (including the recently added UASTC HDR 4x4 and UASTC HDR 6x6i formats) can now be interchanged with KTX-Software. See our [KTX2 technical information document](https://github.com/BinomialLLC/basis_universal/wiki/KTX2-File-Format-Support-Technical-Details) for more info.
Whenever possible, we keep full introspection/transcode compatibility with all of our previously written KTX2 files, even if during standardization a file format change is made. We don't expect how we embed XUASTC LDR into KTX2 in basisu v2.1 to change.
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