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Rich Geldreich
2025-02-18 02:51:06 -05:00
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@@ -72,7 +72,7 @@ Here is the [UASTC HDR 4x4 specification document](https://github.com/BinomialLL
4. UASTC HDR 6x6 or RDO UASTC HDR 6x6: A 3.56 bits/pixel (or less with RDO+Zstd) HDR high quality mode. Just like mode #3, **UASTC HDR 6x6 data is 100% standard ASTC texture data**. Here's a [page with details](https://github.com/BinomialLLC/basis_universal/wiki/ASTC-HDR-6x6-Support-Notes). The current encoder supports weight grid upsampling, 1-3 subsets, single or dual planes, CEM's 7 and 11, and all unique ASTC partition patterns. We don't currently impose any ASTC configuration constraints in this mode, but that may change which is why it's labeled "UASTC".
5. UASTC HDR 6x6 Intermediate ("GPU Photo"): A custom compressed intermediate format that can be rapidly transcoded to ASTC HDR 6x6, BC6H, and various uncompressed HDR formats. The custom compressed file format is [described here](https://github.com/BinomialLLC/basis_universal/wiki/ASTC-HDR-6x6-Intermediate-File-Format-(Basis-GPU-Photo-6x6)). The format supports 75 unique ASTC configurations, utilizing weight grid upsampling, 1-3 subsets, single or dual planes, CEM's 7 and 11, and all unique ASTC partition patterns.
5. UASTC HDR 6x6 Intermediate ("GPU Photo"): A custom compressed intermediate format that can be rapidly transcoded to ASTC HDR 6x6, BC6H, and various uncompressed HDR formats. The custom compressed file format is [described here](https://github.com/BinomialLLC/basis_universal/wiki/UASTC-HDR-6x6-Intermediate-File-Format-(Basis-GPU-Photo-6x6)). The format supports 75 unique ASTC configurations, utilizing weight grid upsampling, 1-3 subsets, single or dual planes, CEM's 7 and 11, and all unique ASTC partition patterns.
Notes:
- Modes #3 and #4 output 100% standard or plain ASTC texture data (with or without RDO), like any other ASTC encoder. The .KTX2 files are just plain textures.