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Update README.md

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Rich Geldreich
2019-05-10 11:50:09 -07:00
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parent c4a7fe8da8
commit f7472fca9d
1 changed files with 4 additions and 4 deletions
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README.md
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@@ -97,13 +97,13 @@ ETC1 - The system's internal texture format is ETC1S, so outputting ETC1 texture
ETC2 - The color block will be ETC1S, and the alpha block is EAC. Conversion from ETC1S->EAC is nearly lossless.
BC1 - ETC1S->BC1 conversion loses approx. .3-.5 dB Y PSNR relative to the source ETC1S data. We don't currently use 3 color (punchthrough) blocks, but we could easy add them.
BC1/DXT1 - ETC1S->BC1 conversion loses approx. .3-.5 dB Y PSNR relative to the source ETC1S data. We don't currently use 3 color (punchthrough) blocks, but we could easily add them.
BC3 - The color block is BC1, the alpha block is BC4. ETC1S->BC4 is nearly lossless.
BC3/DXT5 - The color block is BC1, the alpha block is BC4. ETC1S->BC4 is nearly lossless.
BC4 - ETC1S->BC4 conversion is nearly lossless.
BC4/DXT5A - ETC1S->BC4 conversion is nearly lossless.
BC5 - Two BC4 blocks.
BC5/3DC/DXN - Two BC4 blocks.
BC7 - Currently we only output mode 6, for opaque only textures. The conversion from ETC1S->BC7 is nearly lossless. We'll soon be adding mode 4 or 5 support for alpha textures.