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castano 2009-08-26 00:16:50 +00:00
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@ -333,18 +333,18 @@ compressionOptions.setFormat(Format_BC1);
The supported block compression formats are the following: The supported block compression formats are the following:
* BC1 (DXT1) * Format_BC1 (DXT1)
This is the default block compression format. By default the 1 bit alpha channel is not used. This is the default block compression format. By default the 1 bit alpha channel is not used.
* BC1a (DXT1a) * Format_BC1a (DXT1a)
This is a variation of BC1 that supports binary alpha. This is a variation of BC1 that supports binary alpha.
* BC2 (DXT3) * Format_BC2 (DXT3)
This is a block compression format similar to BC1, but with an explicit 3 bit alpha channel. This is a block compression format similar to BC1, but with an explicit 3 bit alpha channel.
* BC3 (DXT5) * Format_BC3 (DXT5)
This is a block compression format similar to BC1, but with a compressed alpha channel. This is a block compression format similar to BC1, but with a compressed alpha channel.
* BC3n (DXT5nm) * Format_BC3n (DXT5nm)
This is a variation of BC3 that is used to represent normal maps by encoding the X and Y components as follows: R=1, G=Y, B=0, A=X, this swizzle is used to facilitate decompression using [http://code.google.com/p/nvidia-texture-tools/wiki/NormalMapCompression#Capcon%27s_DXT_trick Capcon's DXT decompression trick] This is a variation of BC3 that is used to represent normal maps by encoding the X and Y components as follows: R=1, G=Y, B=0, A=X, this swizzle is used to facilitate decompression using [http://code.google.com/p/nvidia-texture-tools/wiki/NormalMapCompression#Capcon%27s_DXT_trick Capcon's DXT decompression trick]
* BC4 * Format_BC4
* BC5 (LATC, RGTC) * Format_BC5 (LATC, RGTC)
=== Compression Quality === === Compression Quality ===