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Etc2 RGB8A1 format support? #2

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ryancheung opened this issue Jun 22, 2020 · 2 comments
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Etc2 RGB8A1 format support? #2

ryancheung opened this issue Jun 22, 2020 · 2 comments
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@ryancheung
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I currently use google's etc2comp to compress etc2 RGB8A1 for mobile platforms. But it seems slow.
Is it possible to do that in GPU?

Codec ref: https://github.com/google/etc2comp/blob/master/EtcLib/EtcCodec/EtcBlock4x4Encoding_RGB8A1.h
@darksylinc darksylinc added the question Further information is requested label Jun 22, 2020
@darksylinc
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I just added ETC2 support (RGB8 and RGBA8).
Betsy now supports:

  • ETC1 RGB8
  • ETC2 RGB8
  • ETC2 RGBA8

There is no support for RGB8A1 (alpha punch-through) though, and I'm afraid it is not planned.

Does this answer your question?

@ryancheung
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Thanks for the answer. But I believe rgb8a1 format is also important. It just use 1bit alpha and can produce more high quality texture.

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@ryancheung @darksylinc