| public static DecompressColour ( byte block, int blockOffset, bool isDxt1 ) : byte[] | ||
| block | byte | |
| blockOffset | int | |
| isDxt1 | bool | |
| return | byte[] | |
public static byte[] DecompressBlock(byte[] block, int blockOffset, SquishOptions flags)
{
// Get the block locations
var colOff = blockOffset;
var alphaOff = blockOffset;
if ((flags & (SquishOptions.DXT3 | SquishOptions.DXT5)) != 0)
{
colOff += 8;
}
// Decompress colour.
var rgba = ColourBlock.DecompressColour(block, colOff, flags.HasFlag(SquishOptions.DXT1));
// Decompress alpha seperately if necessary.
if (flags.HasFlag(SquishOptions.DXT3))
{
Alpha.DecompressAlphaDxt3(block, alphaOff, rgba, 0);
}
else if (flags.HasFlag(SquishOptions.DXT5))
{
Alpha.DecompressAlphaDxt5(block, alphaOff, rgba, 0);
}
return(rgba);
}
static void Decompress(byte[] rgba, ref byte[] block, int offset, SquishFlags flags)
{
// fix any bad flags
flags = FixFlags(flags);
// get the block locations
int colourBlock = offset;
int alphaBlock = offset;
if ((flags & (SquishFlags.kDxt3 | SquishFlags.kDxt5)) != 0)
{
colourBlock += 8;
}
// decompress colour
ColourBlock.DecompressColour(rgba, ref block, colourBlock, (flags & SquishFlags.kDxt1) != 0);
// decompress alpha separately if necessary
if ((flags & SquishFlags.kDxt3) != 0)
{
throw new NotImplementedException("Squish.DecompressAlphaDxt3");
//DecompressAlphaDxt3(rgba, alphaBlock);
}
else if ((flags & SquishFlags.kDxt5) != 0)
{
DecompressAlphaDxt5(rgba, ref block, alphaBlock);
}
}
